:root {
    --neon-cyan: #22d3ee;
    --neon-green: #39ff14;
    --neon-amber: #ffbf00;
    --panel-border: #1f2937;
    --panel-bg: rgba(6, 8, 10, 0.96);
    --oasis-sea: #92b9b3;
    --oasis-sea-soft: rgba(146, 185, 179, 0.14);
    --oasis-sea-strong: rgba(146, 185, 179, 0.38);
    --oasis-sage: #a1b696;
    --oasis-sage-soft: rgba(161, 182, 150, 0.16);
    --oasis-amber-soft: #ccb18a;
    --oasis-amber-wash: rgba(204, 177, 138, 0.12);
  }

  body {
    background-color: #000;
    color: #d1d5db;
    font-family: 'VT323', monospace;
    background-image:
      linear-gradient(rgba(0, 50, 0, 0.12) 1px, transparent 1px),
      linear-gradient(90deg, rgba(0, 50, 0, 0.12) 1px, transparent 1px);
    background-size: 40px 40px;
  }

  .home-shell {
    transition: padding-bottom 0.24s ease;
  }

  body.home-admin-save-island-visible .home-shell {
    padding-bottom: calc(6.6rem + env(safe-area-inset-bottom, 0px));
  }

  .font-arcade {
    font-family: 'Orbitron', sans-serif;
  }

  .font-terminal {
    font-family: 'Share Tech Mono', monospace;
  }

  .crt-overlay {
    display: none;
  }

  .panel {
    background: linear-gradient(180deg, rgba(10, 11, 13, 0.96), rgba(5, 6, 7, 0.96));
    border: 1px solid var(--panel-border);
    box-shadow: inset 0 0 26px rgba(0, 0, 0, 0.6), 0 0 16px rgba(0, 0, 0, 0.4);
  }

  .scan-line {
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(146, 185, 179, 0.22), rgba(204, 177, 138, 0.16), transparent);
  }

  .global-search-overlay {
    position: fixed;
    inset: 0;
    z-index: 120;
    pointer-events: auto;
    overscroll-behavior: contain;
  }

  .global-search-overlay.hidden {
    display: none;
  }

  .global-search-backdrop {
    position: absolute;
    inset: 0;
    background:
      radial-gradient(circle at 50% 0%, rgba(78, 125, 168, 0.06), transparent 52%),
      linear-gradient(180deg, rgba(2, 7, 14, 0.24), rgba(1, 5, 10, 0.3));
    -webkit-backdrop-filter: blur(2px) saturate(106%);
    backdrop-filter: blur(2px) saturate(106%);
    touch-action: none;
    animation: global-search-backdrop-enter 180ms ease-out;
  }

  .global-search-card {
    position: absolute;
    left: 50%;
    top: 1.65rem;
    transform: translateX(-50%);
    width: min(640px, calc(100vw - 2.4rem));
    border-radius: 999px;
    border: 0;
    background: transparent;
    box-shadow: none;
    backdrop-filter: none;
    padding: 0;
    display: block;
    overflow: visible;
    animation: global-search-enter 220ms cubic-bezier(0.2, 0.86, 0.3, 1);
  }

  .global-search-input-shell {
    position: relative;
    display: grid;
    grid-template-columns: auto minmax(0, 1fr);
    align-items: center;
    gap: 0.58rem;
    border: 1px solid rgba(125, 211, 252, 0.2);
    border-radius: 999px;
    padding: 0.56rem 0.7rem 0.56rem 0.68rem;
    background:
      linear-gradient(180deg, rgba(8, 14, 22, 0.94), rgba(4, 10, 17, 0.96));
    box-shadow:
      0 10px 24px rgba(1, 5, 10, 0.42),
      inset 0 1px 0 rgba(255, 255, 255, 0.06);
    overflow: hidden;
  }

  .global-search-input-shell::before {
    content: "";
    position: absolute;
    inset: 0;
    border-radius: inherit;
    pointer-events: none;
    padding: 1px;
    -webkit-mask:
      linear-gradient(#000 0 0) content-box,
      linear-gradient(#000 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    background: conic-gradient(from 0deg,
        rgba(56, 189, 248, 0.06) 0deg,
        rgba(56, 189, 248, 0.42) 70deg,
        rgba(34, 211, 238, 0.5) 132deg,
        rgba(251, 191, 36, 0.34) 206deg,
        rgba(56, 189, 248, 0.06) 320deg,
        rgba(56, 189, 248, 0.06) 360deg);
    opacity: 0.52;
    animation: global-search-border-drift 8s linear infinite;
  }

  .global-search-card:focus-within .global-search-input-shell::before {
    opacity: 0.75;
  }

  .global-search-icon {
    color: rgba(147, 197, 253, 0.9);
    font-size: 0.92rem;
  }

  .global-search-input {
    border: 0;
    outline: none;
    background: transparent;
    color: rgba(236, 253, 255, 0.96);
    font-family: "Share Tech Mono", monospace;
    font-size: 0.84rem;
    letter-spacing: 0.05em;
    width: 100%;
    min-width: 0;
  }

  .global-search-input::placeholder {
    color: rgba(148, 163, 184, 0.72);
  }

  .global-search-hint,
  .global-search-close {
    display: none;
  }

  .global-search-status {
    margin-top: 0.26rem;
    padding-left: 0.22rem;
    font-family: "Share Tech Mono", monospace;
    font-size: 0.52rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: rgba(148, 176, 203, 0.62);
  }

  .global-search-status:empty {
    display: none;
  }

  .global-search-results {
    margin-top: 0.18rem;
    max-height: min(38vh, 300px);
    overflow: auto;
    -webkit-overflow-scrolling: touch;
    overscroll-behavior: contain;
    touch-action: pan-y;
    display: flex;
    flex-direction: column;
    gap: 0;
    padding: 0;
    border: 0;
    background: transparent;
    box-shadow: none;
  }

  .global-search-results:empty {
    display: none;
  }

  .global-search-item {
    list-style: none;
  }

  .global-search-item + .global-search-item {
    border-top: 1px solid rgba(125, 211, 252, 0.17);
  }

  .global-search-result-btn {
    width: 100%;
    border-radius: 0;
    border: 0;
    background: transparent;
    padding: 0.44rem 0.2rem 0.46rem 0.52rem;
    display: flex;
    flex-direction: column;
    gap: 0.12rem;
    text-align: left;
    touch-action: manipulation;
    transition: color 160ms ease, background 160ms ease;
  }

  .global-search-result-btn:hover,
  .global-search-result-btn.is-active {
    background: linear-gradient(90deg, rgba(125, 211, 252, 0.12), rgba(125, 211, 252, 0.03));
    color: rgba(236, 253, 255, 0.99);
    transform: none;
  }

  .global-search-result-title {
    font-family: "Orbitron", sans-serif;
    font-size: 0.66rem;
    letter-spacing: 0.07em;
    color: rgba(236, 253, 255, 0.97);
    text-transform: uppercase;
    line-height: 1.32;
  }

  .global-search-result-meta {
    font-family: "Share Tech Mono", monospace;
    font-size: 0.52rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: rgba(148, 197, 224, 0.8);
    line-height: 1.28;
  }

  .course-card.is-search-focus-flash {
    animation: course-search-focus-pulse 980ms cubic-bezier(0.2, 0.9, 0.24, 1);
  }

  @keyframes global-search-enter {
    from {
      opacity: 0;
      transform: translateX(-50%) translateY(-10px) scale(0.96);
      filter: blur(3px);
    }

    to {
      opacity: 1;
      transform: translateX(-50%) translateY(0) scale(1);
      filter: blur(0);
    }
  }

  @keyframes global-search-backdrop-enter {
    from {
      opacity: 0;
    }

    to {
      opacity: 1;
    }
  }

  @keyframes global-search-border-drift {
    from {
      transform: rotate(0deg);
    }

    to {
      transform: rotate(360deg);
    }
  }

  @media (prefers-reduced-motion: reduce) {
    .global-search-input-shell::before {
      animation: none;
    }
  }

  @keyframes course-search-focus-pulse {
    0% {
      transform: translateY(0) scale(1);
      box-shadow: 0 0 0 rgba(125, 211, 252, 0);
    }

    45% {
      transform: translateY(-3px) scale(1.03);
      box-shadow: 0 0 0 9px rgba(125, 211, 252, 0.2);
    }

    100% {
      transform: translateY(0) scale(1);
      box-shadow: 0 0 0 rgba(125, 211, 252, 0);
    }
  }

  .course-type-block {
    border: 1px solid rgba(146, 185, 179, 0.12);
    background:
      radial-gradient(circle at top right, rgba(146, 185, 179, 0.08), transparent 38%),
      linear-gradient(180deg, rgba(8, 12, 14, 0.84), rgba(4, 7, 9, 0.92));
    padding: 1rem;
    border-radius: 0.5rem;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.02);
    position: relative;
    overflow: hidden;
  }

  .course-type-block-hidden {
    border-color: rgba(251, 191, 36, 0.22);
    background:
      radial-gradient(circle at top right, rgba(251, 191, 36, 0.1), transparent 34%),
      linear-gradient(180deg, rgba(18, 14, 10, 0.9), rgba(6, 6, 6, 0.96));
  }

  .course-type-block-hidden .course-stack {
    opacity: 0.76;
  }

  .course-type-block h3 {
    color: var(--oasis-amber-soft);
  }

  .course-type-block::before {
    content: '';
    position: absolute;
    left: 0;
    top: 1rem;
    bottom: 1rem;
    width: 1px;
    background: linear-gradient(180deg, transparent, rgba(146, 185, 179, 0.24), transparent);
  }

  .category-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 0.75rem;
    padding-left: 0.4rem;
  }

  .category-header-copy {
    min-width: 0;
  }

  .category-admin-controls {
    flex: 0 0 auto;
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
  }

  .category-status-badge {
    display: inline-flex;
    align-items: center;
    margin-top: 0.45rem;
    padding: 0.22rem 0.5rem;
    border-radius: 999px;
    border: 1px solid rgba(251, 191, 36, 0.3);
    background: rgba(56, 41, 12, 0.55);
    color: #fcd34d;
    font-family: 'Orbitron', sans-serif;
    font-size: 0.58rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
  }

  .course-type-block-book {
    background:
      radial-gradient(circle at 18% 8%, rgba(151, 101, 59, 0.16), transparent 30%),
      linear-gradient(180deg, rgba(14, 10, 8, 0.95), rgba(7, 6, 6, 0.98));
  }

  .course-type-block-book::before {
    background: linear-gradient(180deg, transparent, rgba(204, 177, 138, 0.28), transparent);
  }

  .course-type-block-media {
    background:
      radial-gradient(circle at top right, rgba(146, 185, 179, 0.08), transparent 38%),
      linear-gradient(180deg, rgba(7, 10, 14, 0.92), rgba(4, 7, 9, 0.96));
  }

  .course-stack {
    position: relative;
    isolation: isolate;
    display: flex;
    flex-direction: column;
    gap: 0.64rem;
    overflow: hidden;
    padding: 1.02rem 0.35rem 1.15rem 0.22rem;
  }

  .course-stack-book {
    gap: 0.54rem;
  }

  .course-stack-media {
    gap: 0.6rem;
  }

  #type-sections {
    position: relative;
  }

  .course-stack-shell {
    position: relative;
    padding-right: 0;
    overflow: visible;
  }

  .category-stack-travel-lane {
    --rocket-body: #d9e8f4;
    --rocket-fin: #8fb0c4;
    --rocket-trim: #11293c;
    --rocket-window-ring: #8bc9ea;
    --rocket-window-core: #bee8ff;
    --rocket-rivet: rgba(225, 243, 255, 0.75);
    --rocket-plume-start: rgba(255, 249, 218, 0.98);
    --rocket-plume-mid: rgba(255, 191, 112, 0.88);
    --rocket-plume-end: rgba(126, 221, 255, 0.34);
    --rocket-glow: rgba(126, 212, 245, 0.46);
    --travel-dock-center-x: calc(100% - 2.2rem);
    --travel-dock-bottom: 1.6rem;
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 36;
  }

  .category-stack-travel-lane.is-book-tone {
    --rocket-body: #ecd8bf;
    --rocket-fin: #d0ab7f;
    --rocket-trim: #4a2a14;
    --rocket-window-ring: #ecc79f;
    --rocket-window-core: #f9e3c5;
    --rocket-rivet: rgba(255, 240, 220, 0.72);
    --rocket-plume-start: rgba(255, 247, 214, 0.98);
    --rocket-plume-mid: rgba(249, 174, 95, 0.88);
    --rocket-plume-end: rgba(246, 207, 143, 0.35);
    --rocket-glow: rgba(231, 180, 116, 0.44);
  }

  .category-stack-travel-lane::before {
    content: none;
  }

  .category-stack-travel-lane::after {
    content: none;
  }

  .category-stack-dock-base {
    position: absolute;
    left: var(--travel-dock-center-x);
    bottom: var(--travel-dock-bottom);
    width: 3.5rem;
    height: 0.48rem;
    transform: translateX(-50%);
    border-radius: 999px;
    border: 1px solid rgba(142, 196, 218, 0.32);
    background:
      radial-gradient(circle at 50% 45%, rgba(177, 227, 246, 0.4), rgba(27, 46, 62, 0.35)),
      linear-gradient(180deg, rgba(36, 59, 73, 0.56), rgba(16, 27, 37, 0.7));
    box-shadow: 0 0 12px rgba(115, 186, 217, 0.24), inset 0 0 8px rgba(196, 235, 255, 0.2);
  }

  .category-stack-travel-lane.is-book-tone .category-stack-dock-base {
    border-color: rgba(222, 184, 142, 0.34);
    background:
      radial-gradient(circle at 50% 45%, rgba(251, 224, 188, 0.42), rgba(78, 46, 25, 0.34)),
      linear-gradient(180deg, rgba(70, 44, 28, 0.56), rgba(30, 18, 11, 0.74));
    box-shadow: 0 0 12px rgba(224, 176, 123, 0.24), inset 0 0 8px rgba(255, 235, 206, 0.2);
  }

  .category-stack-travel-streaks {
    position: absolute;
    left: calc(var(--travel-dock-center-x) - 4.6rem);
    bottom: calc(var(--travel-dock-bottom) + 0.28rem);
    width: 9.2rem;
    height: 5.1rem;
    opacity: 0;
    background:
      radial-gradient(circle at 50% 82%, rgba(153, 224, 250, 0.54), rgba(30, 70, 94, 0.34) 46%, transparent 74%),
      radial-gradient(circle at 48% 58%, rgba(150, 230, 255, 0.26), transparent 62%);
    filter: blur(1.4px);
    border-radius: 999px;
  }

  .category-stack-travel-lane.is-traveling .category-stack-travel-streaks {
    opacity: 0.92;
    animation: category-stack-travel-streaks 460ms linear infinite;
  }

  .category-stack-travel-lane.is-traveling .category-stack-dock-base {
    border-color: rgba(175, 230, 252, 0.66);
    box-shadow:
      0 0 22px rgba(128, 213, 245, 0.56),
      0 0 40px rgba(95, 177, 220, 0.26),
      inset 0 0 10px rgba(205, 242, 255, 0.28);
  }

  .category-stack-travel-lane.is-book-tone.is-traveling .category-stack-dock-base {
    border-color: rgba(249, 213, 170, 0.62);
    box-shadow:
      0 0 22px rgba(231, 179, 116, 0.52),
      0 0 40px rgba(200, 142, 74, 0.24),
      inset 0 0 10px rgba(255, 236, 205, 0.28);
  }

  .category-stack-rocket {
    --rocket-landing-offset-y: 25px;
    position: absolute;
    top: 0;
    left: 0;
    width: 4.22rem;
    height: 5.45rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transform: translate3d(-50%, -50%, 0) rotate(8deg);
    transform-origin: 50% 52%;
    filter: drop-shadow(0 0 16px var(--rocket-glow));
    will-change: top, left, transform;
    transition: filter 0.18s ease;
  }

  .category-stack-rocket.is-admin-toggle {
    cursor: pointer;
    pointer-events: auto;
  }

  .category-stack-rocket.is-admin-toggle:hover,
  .category-stack-rocket.is-admin-toggle:focus-visible {
    filter:
      drop-shadow(0 0 18px var(--rocket-glow))
      drop-shadow(0 0 28px rgba(255, 255, 255, 0.16));
  }

  .category-stack-rocket.is-admin-toggle:focus-visible {
    outline: none;
  }

  .category-stack-rocket-admin-label {
    position: absolute;
    left: 50%;
    top: -1.25rem;
    transform: translateX(-50%);
    padding: 0.18rem 0.45rem;
    border-radius: 999px;
    border: 1px solid rgba(126, 212, 245, 0.34);
    background: rgba(7, 15, 24, 0.9);
    color: rgba(188, 232, 248, 0.92);
    font-family: "IBM Plex Mono", monospace;
    font-size: 0.53rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    white-space: nowrap;
    box-shadow: 0 0 14px rgba(61, 122, 148, 0.22);
    pointer-events: none;
  }

  .category-stack-rocket.is-admin-toggle-off {
    filter:
      grayscale(0.28)
      saturate(0.72)
      drop-shadow(0 0 12px rgba(255, 255, 255, 0.12));
  }

  .category-stack-rocket.is-admin-toggle-off .category-stack-rocket-svg {
    opacity: 0.8;
  }

  .category-stack-rocket.is-admin-toggle-off .rocket-window-core {
    fill: rgba(208, 220, 230, 0.72);
  }

  .category-stack-rocket.is-admin-toggle-off .category-stack-rocket-plume,
  .category-stack-rocket.is-admin-toggle-off .category-stack-rocket-shockwave {
    opacity: 0 !important;
    animation: none !important;
  }

  .category-stack-rocket.is-admin-toggle-off .category-stack-rocket-admin-label {
    border-color: rgba(255, 214, 173, 0.28);
    color: rgba(245, 214, 182, 0.9);
    box-shadow: 0 0 14px rgba(156, 112, 67, 0.16);
  }

  .category-stack-rocket.is-landing {
    transition:
      left 540ms cubic-bezier(0.22, 1, 0.36, 1),
      top 540ms cubic-bezier(0.22, 1, 0.36, 1),
      transform 540ms cubic-bezier(0.22, 1, 0.36, 1),
      filter 0.18s ease;
  }

  .category-stack-rocket-svg {
    width: 100%;
    height: 100%;
    overflow: visible;
  }

  .category-stack-rocket:not(.is-traveling) .category-stack-rocket-svg {
    animation: category-stack-rocket-idle 3200ms ease-in-out infinite;
    transform-origin: 50% 52%;
  }

  .category-stack-rocket-svg .rocket-body {
    fill: var(--rocket-body);
    stroke: var(--rocket-trim);
    stroke-width: 3;
  }

  .category-stack-rocket-svg .rocket-fin-left,
  .category-stack-rocket-svg .rocket-fin-right {
    fill: var(--rocket-fin);
    stroke: var(--rocket-trim);
    stroke-width: 3;
  }

  .category-stack-rocket-svg .rocket-window-ring {
    fill: var(--rocket-window-ring);
    stroke: var(--rocket-trim);
    stroke-width: 2.8;
  }

  .category-stack-rocket-svg .rocket-window-core {
    fill: var(--rocket-window-core);
    opacity: 0.9;
    stroke: rgba(255, 255, 255, 0.5);
    stroke-width: 1.2;
  }

  .category-stack-rocket-svg .rocket-engine {
    fill: var(--rocket-trim);
    stroke: var(--rocket-fin);
    stroke-width: 2;
  }

  .category-stack-rocket-svg .rocket-rivet {
    fill: var(--rocket-rivet);
    opacity: 0.86;
  }

  .category-stack-rocket-plume {
    position: absolute;
    top: 4.24rem;
    left: 50%;
    width: 1.26rem;
    height: 2.18rem;
    transform: translateX(-50%) scaleY(0.55);
    transform-origin: top center;
    background: linear-gradient(180deg, var(--rocket-plume-start), var(--rocket-plume-mid), var(--rocket-plume-end));
    border-radius: 999px;
    filter: blur(0.85px);
    opacity: 0;
    z-index: 0;
  }

  .category-stack-rocket:not(.is-traveling):not(.is-landing) .category-stack-rocket-plume {
    animation: none;
    opacity: 0;
    transform: translateX(-50%) scaleY(0.45);
  }

  .category-stack-rocket-shockwave {
    position: absolute;
    top: 4.6rem;
    left: 50%;
    width: 2.14rem;
    height: 0.74rem;
    transform: translateX(-50%) scale(0.76);
    border-radius: 999px;
    background: radial-gradient(ellipse at center, var(--rocket-plume-mid), transparent 70%);
    opacity: 0;
    filter: blur(0.9px);
  }

  .category-stack-rocket.is-traveling .category-stack-rocket-plume {
    animation: category-stack-rocket-plume 180ms ease-in-out infinite alternate;
    opacity: 0.97;
  }

  .category-stack-rocket.is-landing .category-stack-rocket-plume {
    animation: category-stack-rocket-plume 220ms ease-in-out infinite alternate;
    opacity: 0.58;
  }

  .category-stack-rocket.is-traveling .category-stack-rocket-shockwave {
    opacity: 0.85;
    animation: category-stack-rocket-shockwave 210ms ease-in-out infinite alternate;
  }

  .category-stack-rocket.is-landing .category-stack-rocket-shockwave {
    opacity: 0.42;
    animation: category-stack-rocket-shockwave 280ms ease-in-out infinite alternate;
  }

  @keyframes category-stack-rocket-idle {
    0%,
    100% {
      transform: translate3d(0, 0, 0) rotate(1.4deg);
    }

    50% {
      transform: translate3d(0, -3px, 0) rotate(-1.9deg);
    }
  }

  @keyframes category-stack-rocket-idle-plume {
    from {
      transform: translateX(-50%) scaleY(0.5);
      opacity: 0.42;
    }

    to {
      transform: translateX(-50%) scaleY(0.78);
      opacity: 0.58;
    }
  }

  @keyframes category-stack-rocket-plume {
    from {
      transform: translateX(-50%) scaleY(0.52);
    }

    to {
      transform: translateX(-50%) scaleY(1.16);
    }
  }

  @keyframes category-stack-rocket-shockwave {
    from {
      transform: translateX(-50%) scale(0.66);
      opacity: 0.94;
    }

    to {
      transform: translateX(-50%) scale(1.05);
      opacity: 0.24;
    }
  }

  @keyframes category-stack-travel-streaks {
    from {
      background-position: -12px 0, 0 0, 0 0;
    }

    to {
      background-position: 16px 0, 0 0, 14px 0;
    }
  }

  .course-stack-row {
    --course-stack-row-open-height: 320px;
    position: relative;
    display: flex;
    align-items: flex-end;
    justify-content: flex-start;
    width: 100%;
    max-height: var(--course-stack-row-open-height);
    min-height: 122px;
    padding-top: 0.72rem;
    z-index: 1;
    transition:
      max-height 900ms cubic-bezier(0.2, 0.9, 0.2, 1),
      min-height 900ms cubic-bezier(0.2, 0.9, 0.2, 1),
      padding-top 900ms cubic-bezier(0.2, 0.9, 0.2, 1),
      padding-bottom 900ms cubic-bezier(0.2, 0.9, 0.2, 1),
      gap 900ms cubic-bezier(0.2, 0.9, 0.2, 1),
      opacity 620ms ease,
      transform 760ms cubic-bezier(0.2, 0.9, 0.2, 1);
  }

  .course-stack-row::before {
    content: attr(data-stack-category-label);
    position: absolute;
    right: 2.34rem;
    top: 0.06rem;
    font-family: 'Share Tech Mono', monospace;
    font-size: 0.56rem;
    font-weight: 700;
    letter-spacing: 0.13em;
    text-transform: uppercase;
    color: rgba(198, 212, 224, 0.76);
    text-shadow: 0 0 8px rgba(146, 168, 186, 0.22);
    max-width: 62%;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    text-align: right;
    pointer-events: none;
    z-index: 2;
    transition: opacity 420ms ease, transform 560ms ease;
  }

  .course-stack-row-admin-controls {
    position: absolute;
    right: 0.58rem;
    top: 0.02rem;
    z-index: 3;
    display: inline-flex;
    align-items: center;
    gap: 0.34rem;
  }

  .course-stack-row-admin-controls .course-admin-edit {
    min-width: 1.14rem;
    min-height: 1.14rem;
    font-size: 0.56rem;
    border-color: rgba(148, 163, 184, 0.34);
    background: rgba(2, 6, 12, 0.74);
  }

  .course-type-block-book .course-stack-row-admin-controls .course-admin-edit {
    border-color: rgba(202, 176, 141, 0.34);
    background: rgba(14, 10, 7, 0.8);
  }

  .course-stack-row-hidden-badge {
    display: inline-flex;
    align-items: center;
    padding: 0.16rem 0.42rem;
    border-radius: 999px;
    border: 1px solid rgba(251, 191, 36, 0.28);
    background: rgba(56, 41, 12, 0.5);
    color: #fcd34d;
    font-family: 'Orbitron', sans-serif;
    font-size: 0.5rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    line-height: 1;
    white-space: nowrap;
  }

  .course-stack-row-category-hidden::before {
    color: rgba(251, 191, 36, 0.88);
    text-shadow: 0 0 8px rgba(251, 191, 36, 0.22);
  }

  .course-stack-row-category-hidden::after {
    box-shadow:
      0 10px 16px rgba(0, 0, 0, 0.32),
      inset 0 1px 0 rgba(255, 255, 255, 0.06),
      inset 0 -1px 0 rgba(0, 0, 0, 0.44),
      0 0 14px rgba(251, 191, 36, 0.18);
  }

  .course-stack-row[data-stack-category-label=""]::before {
    content: '';
  }

  .course-type-block-book .course-stack-row::before {
    color: rgba(228, 210, 184, 0.78);
    text-shadow: 0 0 8px rgba(182, 147, 106, 0.2);
  }

  .course-stack-row::after {
    content: '';
    position: absolute;
    left: 0.05rem;
    right: 0.05rem;
    bottom: 0.08rem;
    height: 0.84rem;
    border-radius: 999px;
    pointer-events: none;
    z-index: 0;
    transition: opacity 420ms ease, transform 640ms ease, box-shadow 420ms ease;
  }

  .course-stack-row-book {
    --course-stack-row-open-height: 360px;
    gap: 0.16rem;
    padding: 0.72rem 0.34rem 1.08rem 0.18rem;
    min-height: 232px;
  }

  .course-stack-row-book::after {
    background:
      linear-gradient(180deg, rgba(120, 78, 46, 0.98), rgba(54, 34, 18, 0.99)),
      repeating-linear-gradient(90deg, rgba(255, 255, 255, 0.05) 0 2px, transparent 2px 22px);
    box-shadow:
      0 10px 16px rgba(0, 0, 0, 0.3),
      inset 0 1px 0 rgba(255, 255, 255, 0.08),
      inset 0 -1px 0 rgba(0, 0, 0, 0.42);
  }

  .course-stack-row-media {
    --course-stack-row-open-height: 276px;
    gap: 0.34rem;
    padding: 0.64rem 0.24rem 0.86rem 0.2rem;
    min-height: 160px;
  }

  .course-stack-row-media::after {
    background:
      linear-gradient(180deg, rgba(43, 55, 66, 0.95), rgba(18, 26, 34, 0.99)),
      repeating-linear-gradient(90deg, rgba(255, 255, 255, 0.03) 0 2px, transparent 2px 24px);
    box-shadow:
      0 10px 16px rgba(0, 0, 0, 0.28),
      inset 0 1px 0 rgba(255, 255, 255, 0.06),
      inset 0 -1px 0 rgba(0, 0, 0, 0.44);
  }

  .course-stack-row-book .course-card-book+.course-card-book {
    margin-left: 0;
  }

  .course-stack-row-media .course-card-media+.course-card-media {
    margin-left: 0.08rem;
  }

  .category-stack-controls {
    margin-top: 0.45rem;
    padding: 0.58rem 0.38rem 0.18rem;
    border-top: 1px solid rgba(125, 140, 152, 0.2);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.56rem;
    flex-wrap: wrap;
  }

  .category-stack-status {
    font-family: 'Share Tech Mono', monospace;
    font-size: 0.64rem;
    letter-spacing: 0.11em;
    text-transform: uppercase;
    color: rgba(180, 195, 205, 0.78);
    line-height: 1.35;
  }

  .course-type-block-book .category-stack-status {
    color: rgba(222, 203, 176, 0.76);
  }

  .category-stack-actions {
    display: inline-flex;
    align-items: center;
    gap: 0.38rem;
    flex-wrap: wrap;
  }

  .category-stack-btn {
    border: 1px solid rgba(146, 185, 179, 0.32);
    background: linear-gradient(180deg, rgba(12, 20, 24, 0.88), rgba(8, 13, 15, 0.95));
    color: rgba(209, 228, 222, 0.92);
    border-radius: 999px;
    font-family: 'Orbitron', sans-serif;
    font-size: 0.55rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    padding: 0.4rem 0.62rem;
    transition: border-color 0.18s ease, background 0.18s ease, transform 0.18s ease;
  }

  .course-type-block-book .category-stack-btn {
    border-color: rgba(204, 177, 138, 0.3);
    background: linear-gradient(180deg, rgba(28, 20, 14, 0.88), rgba(14, 10, 8, 0.95));
    color: rgba(238, 222, 198, 0.92);
  }

  .category-stack-btn:hover,
  .category-stack-btn:focus-visible {
    outline: none;
    border-color: rgba(178, 224, 212, 0.56);
    background: linear-gradient(180deg, rgba(16, 28, 34, 0.92), rgba(9, 16, 20, 0.98));
    transform: translateY(-1px);
  }

  .course-type-block-book .category-stack-btn:hover,
  .course-type-block-book .category-stack-btn:focus-visible {
    border-color: rgba(222, 199, 166, 0.6);
    background: linear-gradient(180deg, rgba(35, 25, 17, 0.92), rgba(18, 13, 10, 0.98));
  }

  .category-stack-btn-reset {
    border-color: rgba(148, 163, 184, 0.34);
    color: rgba(210, 219, 230, 0.9);
    background: linear-gradient(180deg, rgba(20, 27, 36, 0.84), rgba(11, 16, 23, 0.94));
  }

  .course-stack .course-card {
    animation: course-stack-row-arrival 280ms cubic-bezier(0.22, 1, 0.36, 1);
  }

  .course-stack .course-card[data-stack-row="2"] {
    animation-delay: 36ms;
  }

  .course-stack .course-card[data-stack-row="3"] {
    animation-delay: 68ms;
  }

  .course-stack .course-card[data-stack-row="4"] {
    animation-delay: 96ms;
  }

  .course-card.is-route-pending {
    opacity: 0;
    transform: translateX(-30px) scale(0.88);
    filter: blur(2px) saturate(0.64);
    pointer-events: none;
  }

  .course-stack-row.is-travel-pending {
    max-height: 0;
    min-height: 0 !important;
    padding-top: 0 !important;
    padding-bottom: 0 !important;
    gap: 0 !important;
    opacity: 0.18;
    transform: translateY(10px);
    overflow: hidden;
    pointer-events: none;
  }

  .course-stack-row.is-travel-pending::before,
  .course-stack-row.is-travel-pending::after {
    opacity: 0;
    transform: translateY(6px);
  }

  .course-stack-row.is-collapse-pending {
    pointer-events: none;
  }

  .course-stack-row.is-collapse-collapsing,
  .course-stack-row.is-collapse-collapsed {
    max-height: 0;
    min-height: 0 !important;
    padding-top: 0 !important;
    padding-bottom: 0 !important;
    gap: 0 !important;
    opacity: 0;
    transform: translateY(-14px) scale(0.98);
    overflow: hidden;
    pointer-events: none;
  }

  .course-stack-row.is-collapse-collapsing::before,
  .course-stack-row.is-collapse-collapsing::after,
  .course-stack-row.is-collapse-collapsed::before,
  .course-stack-row.is-collapse-collapsed::after {
    opacity: 0;
    transform: translateY(-8px);
  }

  .course-card.is-collapse-fading {
    opacity: 0;
    transform: translateY(-8px) scale(0.92);
    filter: blur(1px) saturate(0.74);
    transition: opacity 280ms ease, transform 420ms cubic-bezier(0.2, 0.9, 0.2, 1), filter 320ms ease;
  }

  .course-card.is-route-revealed {
    animation: course-stack-card-reveal-from-rocket 620ms cubic-bezier(0.2, 0.9, 0.2, 1) both !important;
  }

  .course-stack-row.is-travel-revealed::after {
    box-shadow:
      0 10px 16px rgba(0, 0, 0, 0.3),
      inset 0 1px 0 rgba(255, 255, 255, 0.09),
      inset 0 -1px 0 rgba(0, 0, 0, 0.42),
      0 0 18px rgba(116, 195, 228, 0.26);
  }

  .course-type-block-book .course-stack-row.is-travel-revealed::after {
    box-shadow:
      0 10px 16px rgba(0, 0, 0, 0.3),
      inset 0 1px 0 rgba(255, 255, 255, 0.1),
      inset 0 -1px 0 rgba(0, 0, 0, 0.42),
      0 0 18px rgba(222, 177, 124, 0.24);
  }

  @keyframes course-stack-card-reveal-from-rocket {
    from {
      opacity: 0;
      transform: translateX(-42px) scale(0.86);
      filter: blur(2px) saturate(0.58);
    }

    58% {
      opacity: 1;
      transform: translateX(5px) scale(1.04);
      filter: blur(0.2px) saturate(1.2);
    }

    to {
      opacity: 1;
      transform: translateX(0) scale(1);
      filter: blur(0) saturate(1);
    }
  }

  @keyframes course-stack-row-arrival {
    from {
      opacity: 0;
      transform: translateY(14px) scale(0.985);
      filter: saturate(0.76);
    }

    to {
      opacity: 1;
      transform: translateY(0) scale(1);
      filter: saturate(1);
    }
  }

  .course-card {
    position: relative;
    z-index: 1;
    border: 0;
    background: transparent;
    padding: 0;
    margin: 0;
    color: inherit;
    text-align: left;
    overflow: visible;
  }

  .course-card:hover,
  .course-card:focus-visible {
    outline: none;
  }

  .course-card[draggable="true"] {
    cursor: grab;
  }

  .course-card-library-dragging {
    opacity: 0.42;
  }

  .course-card-library-drop-before::before,
  .course-card-library-drop-after::after {
    content: '';
    position: absolute;
    top: -0.45rem;
    bottom: -0.45rem;
    width: 3px;
    border-radius: 999px;
    background: linear-gradient(180deg, rgba(34, 211, 238, 0.96), rgba(244, 114, 182, 0.82));
    box-shadow: 0 0 0 1px rgba(6, 182, 212, 0.22), 0 0 14px rgba(34, 211, 238, 0.45);
    z-index: 7;
    pointer-events: none;
  }

  .course-card-library-drop-before::before {
    left: -0.45rem;
  }

  .course-card-library-drop-after::after {
    right: -0.45rem;
  }

  .course-card-shell {
    position: relative;
    z-index: 1;
  }

  .course-card-content {
    min-width: 0;
    display: flex;
    flex-direction: column;
  }

  .course-card-head {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 0.9rem;
    margin-bottom: 0.6rem;
  }

  .course-card-title {
    display: block;
    color: #b8d0cb;
    max-width: 18ch;
    line-height: 1.12;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-size: 0.72rem;
  }

  .course-card-summary {
    display: block;
    color: #a2adb6;
    font-size: 1.1rem;
    line-height: 1.26;
    margin-bottom: 0.75rem;
    max-width: 30ch;
    display: -webkit-box;
    line-clamp: 4;
    -webkit-line-clamp: 4;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }

  .course-card-footer {
    display: block;
    margin-top: auto;
    padding-top: 0.58rem;
    border-top: 1px solid rgba(148, 163, 184, 0.12);
    font-family: 'Share Tech Mono', monospace;
    font-size: 0.62rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: rgba(188, 197, 205, 0.72);
  }

  .course-card-path {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .course-card-book {
    flex: 0 0 auto;
    width: var(--book-width);
    z-index: 1;
    transform: translateY(0);
    transform-origin: 50% 100%;
    transition: transform 0.2s ease;
    will-change: transform;
  }

  .course-card-book .course-card-shell {
    display: flex;
    align-items: flex-end;
  }

  .course-card-book .course-card-content {
    display: none;
  }

  .course-book-figure {
    display: block;
    width: var(--book-width);
    height: var(--book-height);
    position: relative;
    margin-bottom: 0;
    border-radius: 0.48rem 0.22rem 0.22rem 0.48rem;
    background: linear-gradient(180deg, var(--book-top), var(--book-body));
    box-shadow:
      inset -11px 0 0 rgba(0, 0, 0, 0.14),
      inset -2px 0 0 rgba(255, 255, 255, 0.07),
      0 14px 22px rgba(0, 0, 0, 0.28);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    transform-origin: 50% 100%;
  }

  .course-book-figure::before {
    content: '';
    position: absolute;
    right: 6px;
    top: 8px;
    bottom: 8px;
    width: 8px;
    border-radius: 999px;
    background: linear-gradient(180deg, rgba(247, 240, 225, 0.86), rgba(202, 181, 148, 0.62));
    opacity: 0.9;
  }

  .course-book-figure::after {
    content: '';
    position: absolute;
    left: 8px;
    right: 18px;
    top: 15px;
    height: 17px;
    border-top: 1px solid rgba(246, 238, 221, 0.16);
    border-bottom: 1px solid rgba(246, 238, 221, 0.16);
  }

  .course-book-spine-title {
    position: absolute;
    inset: 34px 14px 12px 8px;
    writing-mode: vertical-rl;
    transform: rotate(180deg);
    font-family: 'Orbitron', sans-serif;
    font-size: 0.62rem;
    line-height: 1.1;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: rgba(243, 239, 228, 0.9);
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.55);
    overflow: hidden;
  }

  .course-admin-controls {
    position: absolute;
    right: -0.48rem;
    top: -0.6rem;
    display: inline-flex;
    align-items: center;
    gap: 0.24rem;
    opacity: 0;
    z-index: 4;
    pointer-events: none;
  }

  .course-card-media .course-admin-controls {
    right: -0.42rem;
    top: -0.48rem;
  }

  .course-card:hover .course-admin-controls,
  .course-card:focus-visible .course-admin-controls,
  .course-card.active .course-admin-controls {
    opacity: 1;
    pointer-events: auto;
  }

  .course-admin-controls:focus-within {
    opacity: 1;
    pointer-events: auto;
  }

  .course-card-book:hover,
  .course-card-book:focus-visible {
    z-index: 3;
    transform: translateY(-12px);
  }

  .course-card-book.active {
    z-index: 5;
    transform: translateY(-18px);
  }

  .course-card-book .course-card-summary,
  .course-card-book .course-card-footer {
    display: none;
  }

  .course-card-book:hover .course-book-figure,
  .course-card-book:focus-visible .course-book-figure {
    transform: translateX(3px);
    box-shadow:
      inset -11px 0 0 rgba(0, 0, 0, 0.14),
      inset -2px 0 0 rgba(255, 255, 255, 0.07),
      0 20px 30px rgba(0, 0, 0, 0.34);
  }

  .course-card-book.active .course-book-figure {
    transform: translateX(6px) scale(1.04);
    box-shadow:
      inset -11px 0 0 rgba(0, 0, 0, 0.14),
      inset -2px 0 0 rgba(255, 255, 255, 0.07),
      0 24px 36px rgba(0, 0, 0, 0.38);
  }

  .book-size-0 {
    --book-width: 54px;
    --book-height: 208px;
  }

  .book-size-1 {
    --book-width: 62px;
    --book-height: 228px;
  }

  .book-size-2 {
    --book-width: 48px;
    --book-height: 194px;
  }

  .book-size-3 {
    --book-width: 58px;
    --book-height: 216px;
  }

  .book-tone-0 {
    --book-top: #6d4b38;
    --book-body: #47291d;
  }

  .book-tone-1 {
    --book-top: #38545d;
    --book-body: #22373d;
  }

  .book-tone-2 {
    --book-top: #5f6240;
    --book-body: #3a3f25;
  }

  .book-tone-3 {
    --book-top: #6b5a77;
    --book-body: #43304e;
  }

  .book-tone-4 {
    --book-top: #7a6242;
    --book-body: #503c22;
  }

  .course-card-media {
    flex: 0 0 auto;
    width: 180px;
    z-index: 1;
    transform: translateY(0);
    transform-origin: 50% 100%;
    transition: transform 0.22s ease;
    will-change: transform;
  }

  .course-card-media .course-card-shell {
    display: flex;
    align-items: flex-end;
    justify-content: flex-start;
    padding-left: 0.2rem;
  }

  .course-card-media .course-card-content {
    display: none;
  }

  .course-card-media:hover,
  .course-card-media:focus-visible {
    z-index: 3;
    transform: translateY(-8px);
  }

  .course-card-media.active {
    z-index: 5;
    transform: translateY(-12px);
  }

  .course-disc-case {
    position: relative;
    display: block;
    width: 140px;
    aspect-ratio: 1 / 1;
    border-radius: 999px;
    border: 1px solid var(--media-border, rgba(228, 235, 240, 0.14));
    background:
      radial-gradient(circle at 30% 28%, rgba(255, 255, 255, 0.12), transparent 24%),
      radial-gradient(circle at center, rgba(208, 219, 230, 0.12), transparent 58%),
      linear-gradient(180deg, var(--media-top), var(--media-body));
    box-shadow:
      0 18px 28px rgba(0, 0, 0, 0.24),
      inset 0 1px 0 rgba(255, 255, 255, 0.08),
      inset 0 0 0 1px rgba(255, 255, 255, 0.04);
    overflow: visible;
    transition: transform 0.22s ease, box-shadow 0.22s ease, border-color 0.22s ease;
    z-index: 1;
  }

  .course-disc-case::before {
    content: '';
    position: absolute;
    inset: 9px;
    border-radius: 999px;
    border: 1px solid rgba(255, 255, 255, 0.07);
    pointer-events: none;
  }

  .course-disc {
    position: absolute;
    inset: 16px;
    border-radius: 999px;
    background:
      radial-gradient(circle at center, rgba(14, 18, 23, 0.96) 0 7%, rgba(148, 163, 184, 0.52) 7% 10%, rgba(212, 223, 233, 0.95) 10% 18%, rgba(102, 117, 133, 0.8) 18% 34%, rgba(229, 235, 241, 0.86) 34% 58%, rgba(83, 96, 110, 0.84) 58% 78%, rgba(236, 242, 247, 0.9) 78% 100%);
    box-shadow:
      inset 0 0 0 1px rgba(255, 255, 255, 0.2),
      0 14px 20px rgba(0, 0, 0, 0.18);
    z-index: 2;
  }

  .course-disc::before {
    content: '';
    position: absolute;
    inset: 29%;
    border-radius: 999px;
    background:
      radial-gradient(circle at center, rgba(12, 16, 20, 0.95) 0 35%, rgba(188, 201, 214, 0.75) 35% 50%, rgba(31, 41, 51, 0.92) 50% 100%);
    box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.14);
  }

  .course-disc-tag {
    position: absolute;
    left: 72px;
    top: 82px;
    width: 96px;
    max-width: 96px;
    max-height: 2.9rem;
    min-height: 2.45rem;
    padding: 0.48rem 0.58rem 0.5rem 1rem;
    border-radius: 0.9rem 1rem 1rem 0.9rem;
    border: 1px solid var(--media-border, rgba(228, 235, 240, 0.14));
    background:
      linear-gradient(180deg, rgba(9, 13, 18, 0.94), rgba(15, 22, 29, 0.98));
    color: rgba(247, 250, 252, 1);
    box-shadow:
      0 14px 20px rgba(0, 0, 0, 0.24),
      inset 0 1px 0 rgba(255, 255, 255, 0.05);
    display: -webkit-box;
    -webkit-box-orient: vertical;
    line-clamp: 2;
    -webkit-line-clamp: 2;
    overflow: hidden;
    word-break: normal;
    overflow-wrap: normal;
    hyphens: none;
    text-align: left;
    text-transform: uppercase;
    line-height: 1.08;
    letter-spacing: 0.06em;
    font-size: 0.58rem;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.72);
    pointer-events: none;
    z-index: 3;
    transition:
      transform 0.22s ease,
      border-color 0.22s ease,
      box-shadow 0.22s ease,
      max-width 0.22s ease,
      max-height 0.22s ease;
  }

  .course-disc-tag::before {
    content: '';
    position: absolute;
    left: 0.54rem;
    top: 0.46rem;
    bottom: 0.46rem;
    width: 2px;
    border-radius: 999px;
    background: linear-gradient(180deg, var(--media-border-strong), rgba(255, 255, 255, 0.08));
    opacity: 0.78;
  }

  .course-disc-tag-lg {
    left: 98px;
    top: 112px;
    width: 126px;
    max-width: 126px;
    max-height: 3.5rem;
    min-height: 3rem;
    padding: 0.6rem 0.74rem 0.64rem 1.08rem;
    font-size: 0.68rem;
    line-height: 1.1;
    line-clamp: 2;
    -webkit-line-clamp: 2;
  }

  .course-card-media:hover .course-disc-tag,
  .course-card-media:focus-visible .course-disc-tag,
  .course-card-media.active .course-disc-tag {
    transform: translateX(7px);
    max-width: 154px;
    max-height: 5.6rem;
    line-clamp: 5;
    -webkit-line-clamp: 5;
    border-color: var(--media-border-strong);
    box-shadow:
      0 18px 24px rgba(0, 0, 0, 0.26),
      inset 0 1px 0 rgba(255, 255, 255, 0.05);
  }

  .course-card-media:hover .course-disc-case,
  .course-card-media:focus-visible .course-disc-case {
    transform: rotate(-6deg);
    box-shadow:
      0 22px 34px rgba(0, 0, 0, 0.3),
      inset 0 1px 0 rgba(255, 255, 255, 0.08),
      inset 0 0 0 1px rgba(255, 255, 255, 0.05);
    border-color: var(--media-border-strong);
  }

  .course-card-media.active .course-disc-case {
    transform: rotate(-9deg) scale(1.04);
    box-shadow:
      0 28px 40px rgba(0, 0, 0, 0.34),
      inset 0 1px 0 rgba(255, 255, 255, 0.08),
      inset 0 0 0 1px rgba(255, 255, 255, 0.05);
    border-color: var(--media-border-strong);
  }

  .media-tone-0 {
    --media-top: rgba(31, 57, 63, 0.98);
    --media-body: rgba(15, 29, 34, 0.98);
    --media-border: rgba(146, 185, 179, 0.24);
    --media-border-strong: rgba(146, 185, 179, 0.44);
  }

  .media-tone-1 {
    --media-top: rgba(58, 46, 33, 0.98);
    --media-body: rgba(30, 24, 18, 0.98);
    --media-border: rgba(204, 177, 138, 0.24);
    --media-border-strong: rgba(204, 177, 138, 0.42);
  }

  .media-tone-2 {
    --media-top: rgba(43, 53, 72, 0.98);
    --media-body: rgba(21, 29, 40, 0.98);
    --media-border: rgba(159, 177, 200, 0.24);
    --media-border-strong: rgba(159, 177, 200, 0.42);
  }

  .media-tone-3 {
    --media-top: rgba(49, 57, 40, 0.98);
    --media-body: rgba(26, 30, 21, 0.98);
    --media-border: rgba(161, 182, 150, 0.24);
    --media-border-strong: rgba(161, 182, 150, 0.42);
  }

  .course-admin-edit {
    width: 1.55rem;
    height: 1.55rem;
    flex: 0 0 auto;
    border-radius: 0.35rem;
    border: 1px solid rgba(146, 185, 179, 0.26);
    background: rgba(7, 12, 15, 0.88);
    color: #a8c6c0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
    line-height: 1;
    cursor: pointer;
    transition: all 0.2s ease;
  }

  .course-admin-edit:hover,
  .course-admin-edit:focus-visible {
    border-color: rgba(146, 185, 179, 0.45);
    color: #e6f1ee;
    background: rgba(12, 21, 24, 0.95);
    box-shadow: 0 8px 16px rgba(7, 20, 22, 0.28);
    outline: none;
  }

  .course-admin-toggle-hidden.is-hidden {
    border-color: rgba(251, 191, 36, 0.55);
    color: #fbbf24;
    background: rgba(46, 33, 10, 0.9);
  }

  .course-card-hidden .course-book-figure,
  .course-card-hidden .course-disc-case {
    filter: saturate(0.45) brightness(0.78);
  }

  .role-chip {
    border: 1px solid rgba(34, 211, 238, 0.4);
    color: #67e8f9;
    background: rgba(8, 25, 31, 0.8);
    padding: 0.22rem 0.5rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    font-size: 0.66rem;
    font-family: 'Share Tech Mono', monospace;
  }

  .role-chip.admin {
    color: #fbbf24;
    border-color: rgba(251, 191, 36, 0.5);
    background: rgba(251, 191, 36, 0.12);
  }

  .chapter-btn {
    width: 100%;
    text-align: left;
    border: 1px solid rgba(75, 85, 99, 0.6);
    background: rgba(13, 17, 20, 0.88);
    padding: 0.7rem;
    border-radius: 0.45rem;
    transition: border-color 0.2s ease, transform 0.2s ease, background 0.2s ease;
  }

  .chapter-btn:hover,
  .chapter-btn:focus-visible {
    border-color: rgba(146, 185, 179, 0.34);
    transform: translateX(1px);
    outline: none;
  }

  .chapter-btn.active {
    border-color: rgba(161, 182, 150, 0.38);
    background: rgba(15, 24, 21, 0.9);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.03);
  }

  .chapter-btn .font-arcade {
    color: #afc7c2;
  }

  @media (max-width: 768px) {
    .global-search-backdrop {
      -webkit-backdrop-filter: blur(1.2px) saturate(104%);
      backdrop-filter: blur(1.2px) saturate(104%);
    }

    .global-search-card {
      top: max(1.1rem, env(safe-area-inset-top));
      width: calc(100vw - 1.35rem);
      max-height: none;
      padding: 0;
      border-radius: 999px;
    }

    .global-search-input-shell {
      grid-template-columns: auto minmax(0, 1fr);
      gap: 0.42rem;
      padding: 0.46rem 0.56rem 0.46rem 0.58rem;
    }

    .global-search-input {
      font-size: 1rem;
      letter-spacing: 0.03em;
    }

    .global-search-status {
      margin-top: 0.24rem;
      padding-left: 0.16rem;
      font-size: 0.5rem;
      letter-spacing: 0.08em;
    }

    .global-search-results {
      margin-top: 0.14rem;
      max-height: min(44dvh, 280px);
      padding: 0;
      gap: 0;
    }

    .global-search-result-btn {
      padding-left: 0.42rem;
    }

    #type-sections {
      padding-right: 0;
    }

    .course-stack-shell {
      padding-right: 0;
    }

    .category-stack-travel-lane {
      --travel-dock-center-x: calc(100% - 1.25rem);
      --travel-dock-bottom: 1.02rem;
    }

    .category-stack-dock-base {
      width: 2.58rem;
      height: 0.42rem;
    }

    .category-stack-rocket {
      --rocket-landing-offset-y: 20px;
      width: 2.94rem;
      height: 3.95rem;
    }

    .category-stack-rocket-plume {
      top: 3.02rem;
      width: 0.92rem;
      height: 1.5rem;
    }

    .category-stack-rocket-shockwave {
      top: 3.3rem;
      width: 1.54rem;
      height: 0.54rem;
    }

    .course-stack-row::before {
      right: 0.44rem;
      font-size: 0.49rem;
      max-width: 56%;
    }

    .course-stack {
      padding-left: 0.08rem;
      padding-right: 0.08rem;
      gap: 0.54rem;
    }

    .course-stack-book {
      gap: 0.5rem;
    }

    .course-stack-row-book {
      min-height: 214px;
      gap: 0.12rem;
      padding-top: 0.66rem;
      padding-left: 0.1rem;
      padding-right: 0.16rem;
      padding-bottom: 0.95rem;
    }

    .course-stack-media {
      gap: 0.52rem;
    }

    .course-stack-row-media {
      min-height: 152px;
      gap: 0.24rem;
      padding-top: 0.58rem;
      padding-left: 0.1rem;
      padding-right: 0.12rem;
      padding-bottom: 0.76rem;
    }

    .course-card-media {
      width: 154px;
    }

    .course-stack-row-book .course-card-book+.course-card-book {
      margin-left: 0;
    }

    .category-stack-controls {
      padding-left: 0.2rem;
      padding-right: 0.2rem;
    }

    .category-stack-actions {
      width: 100%;
    }

    .category-stack-btn {
      flex: 1 1 auto;
      text-align: center;
      justify-content: center;
    }

    .course-card-head {
      flex-wrap: wrap;
    }

    .course-card-summary {
      max-width: none;
    }

    .course-admin-controls {
      right: -0.3rem;
      top: -0.35rem;
    }
  }

  .course-book-reveal-shell {
    margin-top: 1.15rem;
    padding: 0 0.2rem;
  }

  .course-media-reveal-shell {
    margin-top: 1.15rem;
    padding: 0 0.2rem;
  }

  .course-book-reveal {
    position: relative;
    display: grid;
    grid-template-columns: minmax(220px, 280px) minmax(0, 1fr);
    border-radius: 1.25rem;
    overflow: hidden;
    border: 1px solid var(--book-frame, rgba(121, 100, 71, 0.32));
    box-shadow: 0 28px 48px rgba(0, 0, 0, 0.34);
    animation: book-reveal-open 260ms cubic-bezier(0.22, 1, 0.36, 1);
  }

  .course-book-reveal::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at top right, rgba(255, 255, 255, 0.08), transparent 34%);
    pointer-events: none;
  }

  .course-book-reveal-cover {
    position: relative;
    min-height: 320px;
    padding: 1.5rem 1.25rem;
    background: linear-gradient(145deg, var(--book-top), var(--book-body));
    box-shadow:
      inset -22px 0 0 rgba(0, 0, 0, 0.16),
      inset -2px 0 0 rgba(255, 255, 255, 0.06);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
  }

  .course-book-reveal-tone-swatch {
    position: absolute;
    left: 1rem;
    top: 1rem;
    width: 1.65rem;
    height: 1.65rem;
    border-radius: 999px;
    border: 1px solid rgba(245, 238, 220, 0.68);
    background: var(--admin-tone-color, rgba(255, 255, 255, 0.2));
    box-shadow: 0 6px 18px rgba(0, 0, 0, 0.24);
    overflow: hidden;
    cursor: pointer;
    z-index: 3;
  }

  .course-book-reveal-tone-input {
    position: absolute;
    inset: -0.2rem;
    opacity: 0;
    cursor: pointer;
  }

  .course-book-reveal-cover::after {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    right: 0;
    width: 16px;
    background: linear-gradient(180deg, rgba(247, 240, 225, 0.86), rgba(202, 181, 148, 0.62));
  }

  .course-book-reveal-title {
    position: relative;
    z-index: 1;
    color: rgba(244, 239, 228, 0.92);
    font-size: 1.24rem;
    line-height: 1.08;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    max-width: 10ch;
  }

  [data-admin-inline-course-field] {
    outline: none;
    cursor: text;
  }

  [data-admin-inline-course-field][data-placeholder]:empty::before {
    content: attr(data-placeholder);
    color: rgba(102, 78, 52, 0.5);
  }

  .course-book-reveal-cover [data-admin-inline-course-field][data-placeholder]:empty::before {
    color: rgba(244, 239, 228, 0.48);
  }

  [data-admin-inline-course-field]:focus {
    box-shadow: 0 0 0 1px rgba(34, 211, 238, 0.55);
    border-radius: 0.25rem;
  }

  .course-book-reveal-author {
    position: relative;
    z-index: 1;
    margin-top: 0.7rem;
    color: rgba(236, 225, 203, 0.76);
    font-family: 'Share Tech Mono', monospace;
    font-size: 0.72rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
  }

  .course-book-reveal-copy {
    position: relative;
    min-height: 320px;
    padding: 1.55rem 1.7rem 1.45rem;
    background: linear-gradient(180deg, rgba(241, 232, 208, 0.97), rgba(223, 211, 183, 0.96));
    color: #2f2419;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
  }

  .course-book-reveal-copy::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 24px;
    background: linear-gradient(90deg, rgba(158, 132, 98, 0.22), rgba(241, 232, 208, 0));
  }

  .course-book-reveal-kicker {
    position: relative;
    z-index: 1;
    font-family: 'Share Tech Mono', monospace;
    font-size: 0.64rem;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: rgba(102, 78, 52, 0.7);
  }

  .course-book-reveal-description {
    position: relative;
    z-index: 1;
    margin-top: 0.9rem;
    color: #35291e;
    font-size: 1.05rem;
    line-height: 1.62;
    max-width: 54ch;
  }

  .course-book-reveal-actions {
    position: relative;
    z-index: 1;
    display: flex;
    flex-wrap: wrap;
    gap: 0.7rem;
    padding-top: 1rem;
  }

  .course-start-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    border: 1px solid rgba(52, 77, 72, 0.38);
    background: rgba(20, 48, 44, 0.92);
    color: #eef4f1;
    padding: 0.82rem 1.1rem;
    border-radius: 999px;
    font-family: 'Orbitron', sans-serif;
    font-size: 0.68rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    transition: border-color 0.2s ease, transform 0.2s ease, background 0.2s ease;
  }

  .course-start-btn:hover,
  .course-start-btn:focus-visible {
    border-color: rgba(52, 77, 72, 0.54);
    background: rgba(26, 58, 54, 0.96);
    transform: translateY(-1px);
    outline: none;
  }

  .course-start-btn:disabled,
  .course-start-btn.course-start-btn-locked {
    border-color: rgba(139, 92, 246, 0.22);
    background: rgba(27, 24, 46, 0.92);
    color: rgba(226, 232, 240, 0.6);
    cursor: not-allowed;
    transform: none;
  }

  .course-access-lock-note {
    margin-top: 0.9rem;
    padding: 0.72rem 0.8rem;
    border-radius: 0.9rem;
    font-family: 'Share Tech Mono', monospace;
    font-size: 0.72rem;
    line-height: 1.55;
    letter-spacing: 0.04em;
  }

  .course-access-lock-note-book {
    border: 1px solid rgba(124, 58, 19, 0.18);
    background: rgba(120, 53, 15, 0.08);
    color: rgba(92, 51, 23, 0.9);
  }

  .course-access-lock-note-media {
    border: 1px solid rgba(168, 85, 247, 0.22);
    background: rgba(56, 22, 78, 0.24);
    color: rgba(221, 214, 254, 0.88);
  }

  .course-media-reveal {
    position: relative;
    display: grid;
    grid-template-columns: minmax(220px, 280px) minmax(0, 1fr);
    border-radius: 1.25rem;
    overflow: hidden;
    border: 1px solid var(--media-border, rgba(159, 177, 200, 0.24));
    background:
      linear-gradient(135deg, rgba(255, 255, 255, 0.04), transparent 28%),
      linear-gradient(180deg, rgba(8, 12, 16, 0.96), rgba(6, 9, 13, 0.98));
    box-shadow: 0 28px 48px rgba(0, 0, 0, 0.34);
    animation: book-reveal-open 260ms cubic-bezier(0.22, 1, 0.36, 1);
  }

  .course-media-reveal-visual {
    position: relative;
    min-height: 300px;
    display: grid;
    place-items: center;
    background:
      radial-gradient(circle at center, rgba(168, 185, 204, 0.08), transparent 46%),
      linear-gradient(180deg, var(--media-top, rgba(11, 18, 24, 0.96)), var(--media-body, rgba(7, 10, 14, 0.98)));
  }

  .course-media-reveal-visual::before {
    content: '';
    position: absolute;
    inset: 18px;
    border-radius: 1rem;
    border: 1px solid var(--media-border, rgba(255, 255, 255, 0.06));
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.03), transparent 55%);
  }

  .course-media-reveal-disc {
    position: relative;
    width: 196px;
    height: 196px;
    border-radius: 999px;
    background:
      radial-gradient(circle at 30% 28%, rgba(255, 255, 255, 0.12), transparent 24%),
      radial-gradient(circle at center, rgba(12, 15, 20, 0.96) 0 7%, rgba(130, 145, 162, 0.62) 7% 10%, rgba(238, 242, 246, 0.94) 10% 18%, rgba(114, 127, 142, 0.82) 18% 34%, rgba(226, 232, 240, 0.9) 34% 58%, rgba(100, 111, 124, 0.84) 58% 78%, rgba(236, 241, 245, 0.92) 78% 100%);
    box-shadow:
      inset 0 0 0 1px rgba(255, 255, 255, 0.26),
      0 22px 34px rgba(0, 0, 0, 0.28);
    overflow: visible;
  }

  .course-media-reveal-disc::before {
    content: '';
    position: absolute;
    inset: 18px;
    border-radius: 999px;
    border: 1px solid rgba(255, 255, 255, 0.08);
  }

  .course-media-reveal-disc::after {
    content: '';
    position: absolute;
    inset: 35%;
    border-radius: 999px;
    background:
      radial-gradient(circle at center, rgba(11, 16, 20, 0.96) 0 34%, rgba(188, 201, 214, 0.78) 34% 50%, rgba(30, 38, 48, 0.92) 50% 100%);
    box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.16);
  }

  .course-media-reveal-disc .course-disc-tag {
    transform: translateX(7px);
    max-width: 170px;
    max-height: 8.5rem;
    line-clamp: 8;
    -webkit-line-clamp: 8;
    border-color: var(--media-border-strong);
    box-shadow:
      0 18px 24px rgba(0, 0, 0, 0.26),
      inset 0 1px 0 rgba(255, 255, 255, 0.05);
  }

  .course-media-reveal-copy {
    padding: 1.7rem 1.8rem 1.55rem;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    gap: 1.15rem;
  }

  .course-media-reveal-description {
    color: #aab5bf;
    font-size: 1.04rem;
    line-height: 1.62;
    max-width: 52ch;
  }

  .course-media-reveal-copy>div:first-child {
    display: block;
    min-height: 0;
  }

  .course-media-reveal-copy>div:first-child>.course-media-reveal-description {
    margin-top: 0;
  }

  .course-media-reveal-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.7rem;
    padding-top: 0.1rem;
  }

  .course-schedule-card {
    margin-top: 1.1rem;
    padding: 0.95rem 1rem 1rem;
    border-radius: 1rem;
    border: 1px solid rgba(148, 163, 184, 0.24);
  }

  .course-schedule-card-book {
    background: linear-gradient(180deg, rgba(250, 244, 230, 0.92), rgba(236, 224, 196, 0.96));
    border-color: rgba(139, 104, 66, 0.28);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.45);
  }

  .course-schedule-card-media {
    background:
      linear-gradient(180deg, rgba(9, 18, 26, 0.96), rgba(5, 11, 17, 0.98)),
      radial-gradient(circle at top right, rgba(34, 211, 238, 0.08), transparent 38%);
    border-color: rgba(71, 97, 124, 0.36);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.04);
  }

  .course-schedule-kicker {
    font-family: 'Share Tech Mono', monospace;
    font-size: 0.63rem;
    letter-spacing: 0.16em;
    text-transform: uppercase;
  }

  .course-schedule-card-book .course-schedule-kicker {
    color: rgba(101, 75, 48, 0.72);
  }

  .course-schedule-card-media .course-schedule-kicker {
    color: rgba(34, 211, 238, 0.72);
  }

  .course-schedule-lead {
    margin-top: 0.38rem;
    font-family: 'Orbitron', sans-serif;
    font-size: 0.72rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
  }

  .course-schedule-card-book .course-schedule-lead {
    color: #4a3723;
  }

  .course-schedule-card-media .course-schedule-lead {
    color: #d8e5f2;
  }

  .course-schedule-summary {
    margin-top: 0.55rem;
    font-size: 0.92rem;
    line-height: 1.55;
  }

  .course-schedule-card-book .course-schedule-summary {
    color: rgba(58, 43, 28, 0.92);
  }

  .course-schedule-card-media .course-schedule-summary {
    color: rgba(188, 203, 217, 0.92);
  }

  .course-schedule-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.72rem 0.85rem;
    margin-top: 0.85rem;
  }

  .course-schedule-item {
    padding: 0.72rem 0.75rem;
    border-radius: 0.85rem;
  }

  .course-schedule-card-book .course-schedule-item {
    background: rgba(255, 255, 255, 0.34);
    border: 1px solid rgba(141, 112, 80, 0.18);
  }

  .course-schedule-card-media .course-schedule-item {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(148, 163, 184, 0.12);
  }

  .course-schedule-label {
    font-family: 'Share Tech Mono', monospace;
    font-size: 0.58rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
  }

  .course-schedule-card-book .course-schedule-label {
    color: rgba(112, 86, 58, 0.72);
  }

  .course-schedule-card-media .course-schedule-label {
    color: rgba(34, 211, 238, 0.62);
  }

  .course-schedule-value {
    margin-top: 0.32rem;
    font-size: 0.8rem;
    line-height: 1.45;
  }

  .course-schedule-card-book .course-schedule-value {
    color: #2f2419;
  }

  .course-schedule-card-media .course-schedule-value {
    color: #edf4fb;
  }

  @keyframes book-reveal-open {
    from {
      opacity: 0;
      transform: translateY(-16px) scale(0.95) rotate(-2deg);
    }

    to {
      opacity: 1;
      transform: translateY(0) scale(1) rotate(0deg);
    }
  }

  @media (max-width: 768px) {
    .course-book-reveal {
      grid-template-columns: 1fr;
    }

    .course-media-reveal {
      grid-template-columns: 1fr;
    }

    .course-book-reveal-cover,
    .course-book-reveal-copy {
      min-height: auto;
    }

    .course-media-reveal-visual {
      min-height: 220px;
    }

    .course-schedule-grid {
      grid-template-columns: 1fr;
    }

    .course-book-reveal-title {
      max-width: none;
    }

  }

  .exercise-box {
    border: 1px solid rgba(75, 85, 99, 0.45);
    background: rgba(3, 8, 11, 0.85);
    border-radius: 0.5rem;
    padding: 0.9rem;
  }

  .admin-field {
    width: 100%;
    background: rgba(2, 6, 10, 0.88);
    border: 1px solid rgba(55, 65, 81, 0.8);
    color: #e5e7eb;
    border-radius: 0.35rem;
    padding: 0.52rem 0.6rem;
    font-family: 'Share Tech Mono', monospace;
    font-size: 0.8rem;
  }

  .admin-field:focus {
    outline: none;
    border-color: rgba(34, 211, 238, 0.8);
    box-shadow: 0 0 0 1px rgba(34, 211, 238, 0.25);
  }

  .admin-toggle-row {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    user-select: none;
  }

  .admin-btn {
    border: 1px solid rgba(34, 211, 238, 0.45);
    color: #67e8f9;
    background: rgba(6, 20, 27, 0.8);
    padding: 0.52rem 0.85rem;
    font-size: 0.72rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    font-family: 'Orbitron', sans-serif;
    transition: all 0.2s ease;
  }

  .admin-btn:hover {
    border-color: rgba(34, 211, 238, 0.95);
    color: #fff;
    box-shadow: 0 0 12px rgba(34, 211, 238, 0.2);
  }

  .admin-btn.warn {
    border-color: rgba(251, 191, 36, 0.5);
    color: #fbbf24;
    background: rgba(251, 191, 36, 0.08);
  }

  .admin-btn.danger {
    border-color: rgba(248, 113, 113, 0.5);
    color: #fca5a5;
    background: rgba(248, 113, 113, 0.1);
  }

  .admin-btn.success {
    border-color: rgba(57, 255, 20, 0.55);
    color: #86efac;
    background: rgba(57, 255, 20, 0.1);
  }

  .admin-btn:disabled {
    opacity: 0.45;
    cursor: not-allowed;
    box-shadow: none;
  }

  .admin-save-island {
    position: fixed;
    left: 50%;
    bottom: calc(env(safe-area-inset-bottom, 0px) + 1rem);
    z-index: 58;
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 0.9rem;
    width: min(360px, calc(100vw - 1rem));
    padding: 0.72rem 0.85rem;
    border-radius: 0.95rem;
    border: 1px solid rgba(148, 163, 184, 0.2);
    background: rgba(9, 13, 18, 0.92);
    box-shadow: 0 14px 36px rgba(0, 0, 0, 0.34);
    -webkit-backdrop-filter: blur(8px);
    backdrop-filter: blur(8px);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transform: translate(-50%, calc(100% + 1.2rem)) scale(0.96);
    transition:
      opacity 0.2s ease,
      transform 0.26s cubic-bezier(0.22, 1, 0.36, 1),
      visibility 0.2s ease,
      border-color 0.2s ease,
      box-shadow 0.2s ease;
  }

  .admin-save-island::before {
    content: none;
  }

  .admin-save-island::after {
    content: none;
  }

  .admin-save-island.is-visible {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: translate(-50%, 0) scale(1);
  }

  .admin-save-island[data-state="saving"] {
    border-color: rgba(125, 211, 252, 0.3);
  }

  .admin-save-island[data-state="recovered"] {
    border-color: rgba(251, 191, 36, 0.28);
  }

  .admin-save-island-copy {
    min-width: 0;
    display: grid;
    gap: 0.2rem;
  }

  .admin-save-island-status {
    color: rgba(241, 245, 249, 0.94);
    font-family: 'Orbitron', sans-serif;
    font-size: 0.52rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
  }

  .admin-save-island-detail {
    min-width: 0;
    color: rgba(203, 213, 225, 0.78);
    font-family: 'Share Tech Mono', monospace;
    font-size: 0.58rem;
    line-height: 1.3;
  }

  .admin-save-island-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 120px;
    min-height: 2.45rem;
    padding: 0.65rem 0.95rem;
    border-radius: 0.75rem;
    border: 1px solid rgba(34, 197, 94, 0.42);
    background: rgba(21, 128, 61, 0.14);
    color: rgba(248, 250, 252, 0.96);
    font-family: 'Orbitron', sans-serif;
    font-size: 0.58rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    cursor: pointer;
    box-shadow: none;
    transition:
      transform 0.18s ease,
      border-color 0.18s ease,
      background-color 0.18s ease,
      color 0.18s ease;
  }

  .admin-save-island-button:hover,
  .admin-save-island-button:focus-visible {
    border-color: rgba(74, 222, 128, 0.62);
    background: rgba(21, 128, 61, 0.24);
    color: #fff;
    outline: none;
  }

  .admin-save-island-button:disabled {
    opacity: 0.66;
    cursor: not-allowed;
    background: rgba(21, 128, 61, 0.1);
  }

  /* Side Rail HUD Styles */
  .side-rail {
    position: fixed;
    top: 0;
    bottom: 0;
    z-index: 50;
    pointer-events: none;
    background: rgba(4, 7, 10, 0.92);
    backdrop-filter: blur(10px);
  }

  /* Left Rail */
  .side-rail-left {
    left: 0;
    width: 54px;
    border-right: 1px solid rgba(34, 211, 238, 0.25);
    box-shadow: 2px 0 24px rgba(34, 211, 238, 0.06), inset -1px 0 0 rgba(34, 211, 238, 0.1);
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 1.2rem 0;
    gap: 0;
    pointer-events: auto;
  }

  /* Floating icon group in left rail */
  .rail-nav-group {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    padding: 0.4rem 0 0.5rem;
    flex: 1;
    justify-content: center;
  }

  .rail-logo {
    width: 30px;
    height: 30px;
    opacity: 0.72;
    filter: drop-shadow(0 0 4px rgba(34, 211, 238, 0.22)) brightness(0.82);
    flex-shrink: 0;
  }

  .rail-divider {
    width: 24px;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(34, 211, 238, 0.5), transparent);
    margin: 0.7rem 0;
    flex-shrink: 0;
  }

  .rail-user-name {
    font-family: 'Share Tech Mono', monospace;
    position: relative;
    z-index: 1;
    display: block;
    max-width: 100%;
    margin: 0.08rem 0 0.46rem;
    padding: 0;
    border: 0;
    background: transparent;
    box-shadow: none;
    text-align: center;
    text-transform: none;
    line-height: 1.05;
    user-select: none;
    font-size: 0.58rem;
    font-weight: 400;
    letter-spacing: 0.08em;
    color: rgba(226, 232, 240, 0.72);
    text-shadow: none;
    opacity: 0.92;
  }

  @keyframes rail-star-twinkle {
    0%,
    100% {
      opacity: 0.42;
      transform: scale(0.8);
    }

    50% {
      opacity: 1;
      transform: scale(1.08);
    }
  }

  .rail-title {
    font-family: 'Orbitron', sans-serif;
    font-size: 0.52rem;
    font-weight: 700;
    letter-spacing: 0.22em;
    color: #22d3ee;
    text-transform: uppercase;
    writing-mode: vertical-rl;
    transform: rotate(180deg);
    white-space: nowrap;
    text-shadow: 0 0 12px rgba(34, 211, 238, 0.5);
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0.5rem 0;
  }

  .rail-ticks {
    display: flex;
    flex-direction: column;
    gap: 4px;
    margin-top: 0.5rem;
    flex-shrink: 0;
  }

  .rail-tick {
    width: 16px;
    height: 2px;
    background: rgba(34, 211, 238, 0.2);
  }

  .rail-tick:nth-child(1) {
    width: 22px;
    background: rgba(34, 211, 238, 0.5);
  }

  .rail-tick:nth-child(2) {
    width: 14px;
  }

  .rail-tick:nth-child(3) {
    width: 18px;
    background: rgba(34, 211, 238, 0.3);
  }

  .rail-tick:nth-child(4) {
    width: 10px;
  }

  .rail-tick:nth-child(5) {
    width: 22px;
    background: rgba(34, 211, 238, 0.4);
  }

  .rail-pulse {
    display: none;
  }

  @keyframes pulse-dot {

    0%,
    100% {
      opacity: 1;
      transform: scale(1);
    }

    50% {
      opacity: 0.3;
      transform: scale(0.6);
    }
  }

  /* Moon-gravity float — gentle, not overdone */
  @keyframes icon-float {

    0%,
    100% {
      transform: translateY(0);
    }

    50% {
      transform: translateY(-3.5px);
    }
  }

  .rail-nav-group .rail-nav-btn {
    animation: icon-float 5.2s ease-in-out infinite;
  }

  .rail-nav-group .rail-nav-btn:nth-child(1) {
    animation-delay: 0s;
  }

  .rail-nav-group .rail-nav-btn:nth-child(2) {
    animation-delay: 0.8s;
  }

  .rail-nav-group .rail-gap {
    animation: none;
  }

  .rail-nav-group .rail-nav-btn:nth-child(4) {
    animation-delay: 1.6s;
  }

  .rail-nav-group .rail-nav-btn:nth-child(5) {
    animation-delay: 2.4s;
  }

  /* Pause float on hover so user can click comfortably */
  .rail-nav-group .rail-nav-btn:hover {
    animation-play-state: paused;
  }

  .rail-nav-btn {
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    background: transparent;
    border: none;
    color: rgba(34, 211, 238, 0.65);
    font-size: 1.1rem;
    text-decoration: none;
    transition: color 0.22s cubic-bezier(0.2, 0.8, 0.2, 1), transform 0.22s cubic-bezier(0.2, 0.8, 0.2, 1), opacity 0.22s cubic-bezier(0.2, 0.8, 0.2, 1);
    border-radius: 0;
    cursor: pointer;
    flex-shrink: 0;
    box-shadow: none;
    opacity: 0.9;
  }

  /* Keep role-gated rail controls hidden even though base button style uses display:flex. */
  .rail-nav-btn.hidden,
  .rail-gap.hidden {
    display: none !important;
  }

  .rail-nav-btn:hover {
    color: #fff;
    transform: scale(1.04);
    opacity: 1;
  }

  .rail-nav-btn.green {
    color: rgba(57, 255, 20, 0.6);
  }

  .rail-nav-btn.green:hover {
    color: #fff;
  }

  .rail-nav-btn.amber {
    color: rgba(251, 191, 36, 0.6);
  }

  .rail-nav-btn.amber:hover {
    color: #fff;
  }

  .rail-nav-btn:focus-visible {
    outline: 1px solid rgba(148, 163, 184, 0.62);
    outline-offset: 2px;
  }

  .rail-nav-badge {
    position: absolute;
    top: -0.24rem;
    right: -0.24rem;
    min-width: 1rem;
    height: 1rem;
    padding: 0 0.2rem;
    border-radius: 999px;
    border: 1px solid rgba(56, 189, 248, 0.62);
    background: rgba(7, 28, 38, 0.98);
    color: rgba(186, 230, 253, 0.98);
    font-family: 'Orbitron', sans-serif;
    font-size: 0.45rem;
    letter-spacing: 0.05em;
    line-height: 1;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 0 10px rgba(56, 189, 248, 0.24);
    pointer-events: none;
  }

  .rail-nav-badge.is-overdue {
    border-color: rgba(248, 113, 113, 0.72);
    background: rgba(63, 18, 21, 0.96);
    color: rgba(254, 202, 202, 0.98);
    box-shadow: 0 0 10px rgba(248, 113, 113, 0.24);
  }

  .rail-nav-badge.is-today {
    border-color: rgba(251, 191, 36, 0.72);
    background: rgba(63, 41, 10, 0.96);
    color: rgba(253, 230, 138, 0.98);
    box-shadow: 0 0 10px rgba(251, 191, 36, 0.24);
  }

  /* Tooltip — points right (buttons are on the left side) */
  .rail-nav-btn::after {
    content: attr(data-label);
    position: absolute;
    left: calc(100% + 12px);
    top: 50%;
    transform: translateY(-50%);
    background: rgba(4, 10, 16, 0.96);
    border: 1px solid rgba(34, 211, 238, 0.35);
    color: #22d3ee;
    font-family: 'Orbitron', sans-serif;
    font-size: 0.52rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    white-space: nowrap;
    padding: 0.35rem 0.65rem;
    pointer-events: none;
    opacity: 0;
    transition: all 0.18s ease;
    border-radius: 4px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
  }

  .rail-nav-btn:hover::after {
    opacity: 1;
    transform: translateY(-50%) translateX(2px);
  }

  .rail-gap {
    width: 24px;
    height: 1px;
    background: rgba(34, 211, 238, 0.15);
    margin: 4px 0;
    flex-shrink: 0;
  }

  .quick-shelf-panel {
    margin-bottom: 1rem;
    border-color: rgba(148, 163, 184, 0.26);
    transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
  }

  .recall-queue-panel {
    margin-bottom: 1rem;
    border-color: rgba(103, 232, 249, 0.2);
    background: linear-gradient(180deg, rgba(6, 12, 16, 0.95), rgba(4, 8, 11, 0.98));
  }

  .recall-queue-modal {
    position: fixed;
    inset: 0;
    z-index: 65;
    display: grid;
    place-items: center;
    padding: 1rem;
    background: rgba(2, 8, 14, 0.84);
    backdrop-filter: blur(4px);
  }

  .recall-queue-modal.hidden {
    display: none;
  }

  .recall-queue-modal-card {
    width: min(1180px, calc(100vw - 96px));
    max-height: calc(100vh - 2.2rem);
    overflow: auto;
    border-radius: 0.82rem;
    border: 1px solid rgba(103, 232, 249, 0.24);
    background: linear-gradient(180deg, rgba(5, 10, 14, 0.98), rgba(2, 7, 10, 0.98));
    box-shadow: 0 20px 34px rgba(0, 0, 0, 0.48);
  }

  .recall-queue-modal .recall-queue-panel {
    margin-bottom: 0;
  }

  .recall-queue-modal-controls {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 0.45rem;
    flex-wrap: wrap;
  }

  .recall-queue-close-btn {
    width: 1.62rem;
    height: 1.62rem;
    border: 1px solid rgba(148, 163, 184, 0.4);
    border-radius: 0.42rem;
    background: rgba(7, 12, 16, 0.9);
    color: rgba(203, 213, 225, 0.9);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 0.78rem;
    line-height: 1;
    transition: border-color 0.18s ease, color 0.18s ease, box-shadow 0.18s ease;
  }

  .recall-queue-close-btn:hover,
  .recall-queue-close-btn:focus-visible {
    border-color: rgba(125, 211, 252, 0.7);
    color: #fff;
    box-shadow: 0 0 0 1px rgba(56, 189, 248, 0.2);
    outline: none;
  }

  body.recall-queue-modal-open {
    overflow: hidden;
  }

  .recall-queue-counts {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0.55rem;
    margin-bottom: 0.78rem;
  }

  .recall-count-pill {
    border: 0;
    border-bottom: 1px solid rgba(71, 85, 105, 0.42);
    border-radius: 0;
    background: transparent;
    min-height: 2rem;
    padding: 0.28rem 0.22rem 0.42rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.45rem;
  }

  .recall-count-pill-label {
    font-family: 'Share Tech Mono', monospace;
    font-size: 0.58rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: rgba(203, 213, 225, 0.74);
  }

  .recall-count-pill-value {
    font-family: 'Orbitron', sans-serif;
    font-size: 1rem;
    letter-spacing: 0.04em;
    color: rgba(226, 232, 240, 0.96);
  }

  .recall-count-pill.is-overdue {
    border-bottom-color: rgba(248, 113, 113, 0.45);
  }

  .recall-count-pill.is-overdue .recall-count-pill-value {
    color: rgba(254, 202, 202, 0.98);
  }

  .recall-count-pill.is-today {
    border-bottom-color: rgba(251, 191, 36, 0.46);
  }

  .recall-count-pill.is-today .recall-count-pill-value {
    color: rgba(253, 230, 138, 0.98);
  }

  .recall-count-pill.is-upcoming {
    border-bottom-color: rgba(56, 189, 248, 0.42);
  }

  .recall-count-pill.is-upcoming .recall-count-pill-value {
    color: rgba(186, 230, 253, 0.96);
  }

  .recall-queue-list {
    display: grid;
    gap: 0.6rem;
  }

  .recall-analytics-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 0.5rem;
    margin-bottom: 0.82rem;
  }

  .recall-analytics-card {
    border: 0;
    border-bottom: 1px solid rgba(71, 85, 105, 0.38);
    border-radius: 0;
    background: transparent;
    min-height: 2rem;
    padding: 0.24rem 0.18rem 0.46rem;
    display: grid;
    gap: 0.18rem;
  }

  .recall-analytics-label {
    font-family: 'Share Tech Mono', monospace;
    font-size: 0.56rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: rgba(148, 163, 184, 0.76);
  }

  .recall-analytics-value {
    font-family: 'Orbitron', sans-serif;
    font-size: 0.78rem;
    letter-spacing: 0.04em;
    text-transform: none;
    color: rgba(226, 232, 240, 0.94);
  }

  .recall-queue-calendar-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 1.5rem;
    padding: 0.15rem 0.56rem;
    border-radius: 999px;
    border: 1px solid rgba(103, 232, 249, 0.4);
    background: rgba(4, 19, 25, 0.84);
    color: rgba(186, 230, 253, 0.96);
    font-family: 'Orbitron', sans-serif;
    font-size: 0.5rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    text-decoration: none;
    transition: border-color 0.18s ease, box-shadow 0.18s ease, transform 0.18s ease;
  }

  .recall-queue-calendar-link:hover,
  .recall-queue-calendar-link:focus-visible {
    outline: none;
    border-color: rgba(125, 211, 252, 0.74);
    box-shadow: 0 0 0 1px rgba(56, 189, 248, 0.24);
    transform: translateY(-1px);
  }

  .recall-queue-item {
    border: 0;
    border-left: 2px solid rgba(71, 85, 105, 0.42);
    border-bottom: 1px solid rgba(71, 85, 105, 0.3);
    border-radius: 0;
    background: transparent;
    padding: 0.7rem 0.22rem 0.68rem 0.62rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.8rem;
  }

  .recall-queue-list>.recall-queue-item:last-child {
    border-bottom: 0;
  }

  .recall-queue-item.is-overdue {
    border-left-color: rgba(248, 113, 113, 0.55);
  }

  .recall-queue-item.is-today {
    border-left-color: rgba(251, 191, 36, 0.6);
  }

  .recall-queue-item.is-locked {
    border-color: rgba(100, 116, 139, 0.42);
    opacity: 0.86;
  }

  .recall-queue-main {
    min-width: 0;
    display: grid;
    gap: 0.22rem;
  }

  .recall-queue-line {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.35rem;
  }

  .recall-queue-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 999px;
    border: 1px solid rgba(125, 211, 252, 0.28);
    background: rgba(7, 21, 32, 0.72);
    color: rgba(186, 230, 253, 0.92);
    font-family: 'Orbitron', sans-serif;
    font-size: 0.5rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    min-height: 1.25rem;
    padding: 0.1rem 0.45rem;
  }

  .recall-queue-badge.is-overdue {
    border-color: rgba(248, 113, 113, 0.44);
    background: rgba(60, 19, 22, 0.75);
    color: rgba(254, 202, 202, 0.95);
  }

  .recall-queue-badge.is-today {
    border-color: rgba(251, 191, 36, 0.44);
    background: rgba(61, 38, 10, 0.74);
    color: rgba(253, 230, 138, 0.96);
  }

  .recall-queue-title {
    font-family: 'Orbitron', sans-serif;
    font-size: 0.92rem;
    letter-spacing: 0.03em;
    text-transform: none;
    color: rgba(226, 232, 240, 0.94);
  }

  .recall-queue-meta {
    font-family: 'Share Tech Mono', monospace;
    font-size: 0.7rem;
    letter-spacing: 0.03em;
    text-transform: none;
    color: rgba(148, 163, 184, 0.84);
    line-height: 1.45;
  }

  .recall-queue-action {
    flex: 0 0 auto;
    border-radius: 0.5rem;
    border: 1px solid rgba(103, 232, 249, 0.32);
    background: transparent;
    color: rgba(186, 230, 253, 0.98);
    font-family: 'Orbitron', sans-serif;
    font-size: 0.6rem;
    letter-spacing: 0.07em;
    text-transform: uppercase;
    padding: 0.4rem 0.68rem;
    text-decoration: none;
    transition: border-color 0.18s ease, color 0.18s ease;
  }

  .recall-queue-action:hover,
  .recall-queue-action:focus-visible {
    outline: none;
    border-color: rgba(125, 211, 252, 0.72);
    color: #e0f2fe;
  }

  .recall-queue-action.is-disabled {
    border-color: rgba(100, 116, 139, 0.34);
    background: rgba(15, 23, 32, 0.86);
    color: rgba(148, 163, 184, 0.88);
    cursor: not-allowed;
    pointer-events: none;
  }

  .recall-queue-empty {
    border: 0;
    border-left: 2px solid rgba(71, 85, 105, 0.52);
    padding: 0.72rem 0.75rem;
    background: transparent;
    color: rgba(148, 163, 184, 0.86);
    font-family: 'Share Tech Mono', monospace;
    font-size: 0.74rem;
    letter-spacing: 0.04em;
    text-transform: none;
  }

  #recall-queue-title {
    font-size: 0.96rem !important;
    letter-spacing: 0.05em !important;
  }

  #recall-queue-status {
    font-size: 0.63rem !important;
    letter-spacing: 0.05em !important;
    text-transform: none !important;
  }

  .recall-response-panel {
    margin-bottom: 0;
    border-color: rgba(103, 232, 249, 0.24);
    background: linear-gradient(180deg, rgba(6, 12, 16, 0.96), rgba(4, 8, 11, 0.99));
  }

  .recall-response-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 0.85rem;
  }

  .recall-response-context {
    margin-top: 0.45rem;
    display: flex;
    flex-wrap: wrap;
    gap: 0.35rem;
  }

  .recall-response-chip {
    border: 1px solid rgba(100, 116, 139, 0.38);
    border-radius: 999px;
    padding: 0.18rem 0.48rem;
    background: rgba(15, 23, 42, 0.45);
    color: rgba(203, 213, 225, 0.88);
    font-family: 'Share Tech Mono', monospace;
    font-size: 0.63rem;
    line-height: 1.25;
  }

  .recall-response-label {
    display: block;
    margin-bottom: 0.42rem;
    color: rgba(186, 230, 253, 0.88);
    font-family: 'Share Tech Mono', monospace;
    font-size: 0.66rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
  }

  .recall-response-text {
    width: 100%;
    min-height: 13rem;
    resize: vertical;
    border: 1px solid rgba(71, 85, 105, 0.58);
    border-radius: 0.58rem;
    background: rgba(2, 6, 10, 0.84);
    color: rgba(226, 232, 240, 0.96);
    padding: 0.82rem 0.9rem;
    font-family: 'Share Tech Mono', monospace;
    font-size: 0.86rem;
    line-height: 1.55;
    outline: none;
  }

  .recall-response-text:focus {
    border-color: rgba(103, 232, 249, 0.68);
    box-shadow: 0 0 0 1px rgba(34, 211, 238, 0.22);
  }

  .recall-response-footer {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 0.85rem;
    margin-top: 0.78rem;
  }

  .recall-response-count,
  .recall-response-status {
    font-family: 'Share Tech Mono', monospace;
    font-size: 0.68rem;
    line-height: 1.45;
  }

  .recall-response-count {
    color: rgba(148, 163, 184, 0.9);
  }

  .recall-response-status {
    color: rgba(251, 191, 36, 0.92);
  }

  .recall-response-status.is-ok {
    color: rgba(110, 231, 183, 0.95);
  }

  .recall-response-status.is-error {
    color: rgba(252, 165, 165, 0.95);
  }

  .recall-response-actions {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 0.55rem;
    flex-wrap: wrap;
  }

  .recall-response-confidence {
    display: inline-flex;
    align-items: center;
    gap: 0.32rem;
    flex-wrap: wrap;
  }

  .recall-response-confidence-btn {
    border-radius: 999px;
    border: 1px solid rgba(100, 116, 139, 0.42);
    background: transparent;
    color: rgba(203, 213, 225, 0.86);
    font-family: 'Share Tech Mono', monospace;
    font-size: 0.6rem;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    min-height: 1.62rem;
    padding: 0.18rem 0.52rem;
  }

  .recall-response-confidence-btn.is-active {
    border-color: rgba(110, 231, 183, 0.58);
    color: rgba(209, 250, 229, 0.96);
    background: rgba(6, 78, 59, 0.28);
  }

  .hyperspace-mission-strip {
    margin-bottom: 0.9rem;
    padding: 0.78rem 0.88rem;
    border-radius: 0.82rem;
    border: 1px solid rgba(180, 136, 92, 0.26);
    background:
      radial-gradient(circle at top right, rgba(251, 191, 36, 0.08), transparent 34%),
      linear-gradient(180deg, rgba(18, 14, 10, 0.94), rgba(8, 7, 6, 0.98));
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.9rem;
  }

  .hyperspace-mission-copy {
    min-width: 0;
    display: grid;
    gap: 0.32rem;
  }

  .hyperspace-mission-kicker {
    font-family: 'Share Tech Mono', monospace;
    font-size: 0.58rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: rgba(203, 213, 225, 0.58);
  }

  .hyperspace-mission-main {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.45rem;
  }

  .hyperspace-mission-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 1.5rem;
    padding: 0.2rem 0.52rem;
    border-radius: 999px;
    border: 1px solid rgba(125, 211, 252, 0.28);
    background: rgba(8, 23, 34, 0.72);
    color: rgba(186, 230, 253, 0.92);
    font-family: 'Orbitron', sans-serif;
    font-size: 0.54rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    white-space: nowrap;
  }

  .hyperspace-mission-badge.is-warn {
    border-color: rgba(251, 191, 36, 0.4);
    background: rgba(62, 34, 8, 0.7);
    color: rgba(253, 230, 138, 0.96);
  }

  .hyperspace-mission-badge.is-danger {
    border-color: rgba(248, 113, 113, 0.4);
    background: rgba(57, 15, 18, 0.72);
    color: rgba(254, 202, 202, 0.96);
  }

  .hyperspace-mission-text {
    min-width: 0;
    font-family: 'Orbitron', sans-serif;
    font-size: 0.72rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: rgba(248, 250, 252, 0.94);
  }

  .hyperspace-mission-meta {
    min-width: 0;
    font-family: 'Share Tech Mono', monospace;
    font-size: 0.62rem;
    line-height: 1.4;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: rgba(186, 230, 253, 0.72);
  }

  .hyperspace-mission-action {
    flex: 0 0 auto;
    border-radius: 999px;
    border: 1px solid rgba(251, 191, 36, 0.42);
    background: rgba(48, 28, 11, 0.92);
    color: rgba(255, 244, 214, 0.96);
    font-family: 'Orbitron', sans-serif;
    font-size: 0.58rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    padding: 0.58rem 0.9rem;
    transition: border-color 0.18s ease, transform 0.18s ease, box-shadow 0.18s ease;
  }

  .hyperspace-mission-action:hover,
  .hyperspace-mission-action:focus-visible {
    outline: none;
    border-color: rgba(253, 224, 71, 0.74);
    box-shadow: 0 0 0 1px rgba(251, 191, 36, 0.18);
    transform: translateY(-1px);
  }

  .storage-panel {
    margin-top: 1rem;
    border-color: rgba(100, 116, 139, 0.24);
    background:
      radial-gradient(circle at top right, rgba(148, 163, 184, 0.05), transparent 36%),
      linear-gradient(180deg, rgba(9, 11, 13, 0.95), rgba(5, 7, 9, 0.98));
  }

  .quick-shelf-dock {
    position: fixed;
    left: 70px;
    right: 60px;
    top: 0.2rem;
    z-index: 34;
    opacity: 0;
    transform: translateY(-110%);
    pointer-events: none;
    transition: opacity 0.2s ease, transform 0.22s ease;
  }

  .quick-shelf-dock.active {
    opacity: 0.95;
    transform: translateY(0);
    pointer-events: auto;
  }

  .quick-shelf-dock.drop-target .quick-shelf-dock-track {
    border-color: rgba(226, 178, 117, 0.7);
    box-shadow: 0 0 0 1px rgba(226, 178, 117, 0.28), 0 12px 18px rgba(0, 0, 0, 0.28);
  }

  .quick-shelf-dock-track {
    position: relative;
    min-height: 1.28rem;
    border-radius: 999px;
    border: 1px solid rgba(180, 136, 92, 0.35);
    background:
      linear-gradient(180deg, rgba(109, 76, 47, 0.98), rgba(58, 35, 18, 0.98)),
      repeating-linear-gradient(90deg, rgba(255, 255, 255, 0.03) 0 2px, transparent 2px 18px);
    box-shadow:
      0 8px 14px rgba(0, 0, 0, 0.3),
      inset 0 1px 0 rgba(255, 255, 255, 0.09),
      inset 0 -1px 0 rgba(0, 0, 0, 0.42);
    overflow: hidden;
  }

  .quick-shelf-dock-label {
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    font-size: 0.52rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: rgba(241, 223, 198, 0.84);
    white-space: nowrap;
    text-shadow: 0 1px 1px rgba(0, 0, 0, 0.48);
    pointer-events: auto;
  }

  .hyperspace-rules-trigger {
    cursor: pointer;
    transition: color 0.2s ease, text-shadow 0.2s ease;
  }

  .storage-rules-trigger {
    cursor: pointer;
    transition: color 0.2s ease, text-shadow 0.2s ease;
  }

  .hyperspace-rules-trigger:hover,
  .hyperspace-rules-trigger:focus-visible {
    color: #ffe6bf;
    text-shadow: 0 0 10px rgba(255, 206, 137, 0.35);
    outline: none;
  }

  .storage-rules-trigger:hover,
  .storage-rules-trigger:focus-visible {
    color: #dff4ff;
    text-shadow: 0 0 10px rgba(125, 211, 252, 0.32);
    outline: none;
  }

  .hyperspace-rules-modal {
    position: fixed;
    inset: 0;
    z-index: 63;
    background: rgba(3, 7, 12, 0.84);
    display: grid;
    place-items: center;
    padding: 1rem;
  }

  .hyperspace-rules-modal.hidden {
    display: none;
  }

  .hyperspace-rules-card {
    width: min(640px, 100%);
    border-radius: 0.85rem;
    border: 1px solid rgba(148, 163, 184, 0.34);
    background:
      radial-gradient(circle at top right, rgba(253, 186, 116, 0.1), transparent 38%),
      linear-gradient(180deg, rgba(10, 12, 16, 0.98), rgba(4, 7, 11, 0.98));
    box-shadow: 0 24px 44px rgba(0, 0, 0, 0.46);
    padding: 1rem;
  }

  .storage-rules-card {
    border-color: rgba(125, 211, 252, 0.28);
    background:
      radial-gradient(circle at top right, rgba(125, 211, 252, 0.1), transparent 38%),
      linear-gradient(180deg, rgba(9, 13, 19, 0.98), rgba(4, 8, 13, 0.98));
  }

  .hyperspace-rules-list {
    margin-top: 0.75rem;
    display: grid;
    gap: 0.5rem;
  }

  .hyperspace-rules-item {
    border: 1px solid rgba(100, 116, 139, 0.35);
    border-radius: 0.55rem;
    background: rgba(5, 10, 16, 0.78);
    padding: 0.58rem 0.64rem;
  }

  .storage-rules-item {
    border-color: rgba(125, 211, 252, 0.22);
    background: rgba(6, 12, 18, 0.84);
  }

  .hyperspace-rules-close {
    margin-top: 0.8rem;
    border: 1px solid rgba(148, 163, 184, 0.44);
    border-radius: 0.48rem;
    background: rgba(8, 14, 20, 0.85);
    color: rgba(226, 232, 240, 0.9);
    font-size: 0.62rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    padding: 0.42rem 0.72rem;
  }

  .hyperspace-rules-close:hover,
  .hyperspace-rules-close:focus-visible {
    border-color: rgba(248, 250, 252, 0.76);
    color: #fff;
    outline: none;
  }

  .storage-rules-close:hover,
  .storage-rules-close:focus-visible {
    border-color: rgba(125, 211, 252, 0.72);
    box-shadow: 0 0 0 1px rgba(125, 211, 252, 0.16);
  }

  .pill-mode-modal {
    position: fixed;
    inset: 0;
    z-index: 64;
    background: rgba(3, 8, 13, 0.86);
    display: grid;
    place-items: center;
    padding: 1rem;
  }

  .pill-mode-modal.hidden {
    display: none;
  }

  .pill-mode-card {
    position: relative;
    width: min(760px, 100%);
    border-radius: 0.9rem;
    border: 1px solid rgba(125, 211, 252, 0.3);
    background:
      radial-gradient(circle at top right, rgba(125, 211, 252, 0.12), transparent 36%),
      linear-gradient(180deg, rgba(9, 13, 18, 0.98), rgba(4, 8, 12, 0.98));
    box-shadow: 0 26px 48px rgba(0, 0, 0, 0.52);
    padding: 1rem;
  }

  .pill-mode-close {
    position: absolute;
    right: 0.8rem;
    top: 0.75rem;
    width: 1.6rem;
    height: 1.6rem;
    border: 1px solid rgba(148, 163, 184, 0.42);
    border-radius: 0.42rem;
    background: rgba(7, 11, 16, 0.92);
    color: rgba(203, 213, 225, 0.9);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 0.78rem;
    line-height: 1;
  }

  .pill-mode-close:hover,
  .pill-mode-close:focus-visible {
    color: #fff;
    border-color: rgba(226, 232, 240, 0.72);
    outline: none;
  }

  .pill-mode-grid {
    margin-top: 0.75rem;
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.7rem;
  }

  .pill-mode-column {
    border: 1px solid rgba(71, 85, 105, 0.42);
    border-radius: 0.62rem;
    background: rgba(5, 10, 15, 0.76);
    padding: 0.7rem;
    display: grid;
    gap: 0.55rem;
  }

  .pill-mode-heading {
    font-family: 'Orbitron', sans-serif;
    font-size: 0.62rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: rgba(226, 232, 240, 0.92);
  }

  .pill-mode-toggle {
    display: flex;
    align-items: flex-start;
    gap: 0.46rem;
    font-family: 'Share Tech Mono', monospace;
    font-size: 0.68rem;
    color: rgba(203, 213, 225, 0.88);
    line-height: 1.3;
  }

  .pill-mode-field {
    display: grid;
    gap: 0.34rem;
    font-family: 'Share Tech Mono', monospace;
    font-size: 0.66rem;
    color: rgba(148, 163, 184, 0.95);
  }

  .pill-mode-field input,
  .pill-mode-field select {
    width: 100%;
    border: 1px solid rgba(100, 116, 139, 0.56);
    border-radius: 0.42rem;
    background: rgba(2, 6, 10, 0.82);
    color: rgba(226, 232, 240, 0.94);
    padding: 0.34rem 0.44rem;
    font-size: 0.74rem;
  }

  .pill-mode-field input:focus,
  .pill-mode-field select:focus {
    outline: none;
    border-color: rgba(125, 211, 252, 0.75);
    box-shadow: 0 0 0 1px rgba(125, 211, 252, 0.24);
  }

  .pill-mode-note {
    font-family: 'Share Tech Mono', monospace;
    font-size: 0.55rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: rgba(148, 163, 184, 0.8);
    line-height: 1.35;
  }

  .pill-mode-actions {
    margin-top: 0.84rem;
    display: flex;
    justify-content: flex-end;
    gap: 0.42rem;
  }

  .pill-mode-actions #pill-mode-save {
    border-color: rgba(125, 211, 252, 0.56);
    color: rgba(186, 230, 253, 0.95);
    background: rgba(11, 39, 54, 0.88);
  }

  .quick-shelf-panel.dragging-course {
    border-color: rgba(180, 136, 92, 0.42);
    box-shadow: 0 0 0 1px rgba(180, 136, 92, 0.2), 0 20px 34px rgba(0, 0, 0, 0.28);
  }

  .quick-shelf-panel.drop-target {
    border-color: rgba(226, 178, 117, 0.68);
    box-shadow: 0 0 0 1px rgba(226, 178, 117, 0.3), 0 22px 36px rgba(0, 0, 0, 0.3);
    transform: translateY(-1px);
  }

  .course-library-panel.drop-target {
    border-color: rgba(148, 197, 255, 0.52);
    box-shadow: 0 0 0 1px rgba(148, 197, 255, 0.24), 0 20px 34px rgba(0, 0, 0, 0.26);
  }

  .quick-shelf-track {
    position: relative;
    display: flex;
    align-items: flex-end;
    gap: 0.36rem;
    overflow-x: auto;
    min-height: 292px;
    padding: 1.25rem 0.55rem 2.1rem 0.5rem;
    scrollbar-width: thin;
    scrollbar-color: rgba(180, 136, 92, 0.34) transparent;
  }

  .quick-shelf-track::after {
    content: '';
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0.55rem;
    height: 1.06rem;
    border-radius: 999px;
    background:
      linear-gradient(180deg, rgba(109, 76, 47, 0.98), rgba(58, 35, 18, 0.98)),
      repeating-linear-gradient(90deg, rgba(255, 255, 255, 0.03) 0 2px, transparent 2px 20px);
    box-shadow:
      0 12px 20px rgba(0, 0, 0, 0.34),
      inset 0 1px 0 rgba(255, 255, 255, 0.08),
      inset 0 -1px 0 rgba(0, 0, 0, 0.4);
    pointer-events: none;
  }

  .storage-track {
    min-height: 250px;
    scrollbar-color: rgba(100, 116, 139, 0.34) transparent;
  }

  .storage-track::after {
    background:
      linear-gradient(180deg, rgba(55, 65, 81, 0.94), rgba(25, 30, 39, 0.98)),
      repeating-linear-gradient(90deg, rgba(255, 255, 255, 0.02) 0 2px, transparent 2px 20px);
    box-shadow:
      0 12px 18px rgba(0, 0, 0, 0.3),
      inset 0 1px 0 rgba(255, 255, 255, 0.05),
      inset 0 -1px 0 rgba(0, 0, 0, 0.42);
  }

  .storage-track .quick-shelf-remove {
    border-color: rgba(148, 163, 184, 0.34);
    background: rgba(15, 19, 24, 0.88);
    color: rgba(203, 213, 225, 0.72);
  }

  .storage-track .quick-shelf-slot:hover .quick-shelf-remove,
  .storage-track .quick-shelf-remove:focus-visible {
    border-color: rgba(203, 213, 225, 0.58);
  }

  .quick-shelf-empty {
    min-height: 132px;
    width: 100%;
    display: grid;
    place-items: center;
    text-align: center;
    border: 1px dashed rgba(148, 163, 184, 0.25);
    border-radius: 0.8rem;
    color: rgba(156, 163, 175, 0.78);
    background: linear-gradient(180deg, rgba(12, 16, 22, 0.5), rgba(7, 10, 14, 0.45));
    z-index: 1;
  }

  .quick-shelf-slot {
    position: relative;
    z-index: 1;
    flex: 0 0 auto;
    display: flex;
    align-items: flex-end;
    overflow: visible;
  }

  .quick-shelf-slot-book {
    margin-right: -0.06rem;
  }

  .quick-shelf-slot-media {
    margin-right: 0.35rem;
    margin-left: 0.2rem;
  }

  .quick-shelf-course-card {
    display: inline-flex;
  }

  .quick-shelf-item {
    border: 0;
    background: transparent;
    color: inherit;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.46rem;
    cursor: pointer;
  }

  .quick-shelf-item:focus-visible {
    outline: none;
  }

  .quick-shelf-art {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.22s ease, box-shadow 0.22s ease, filter 0.22s ease;
    filter: saturate(1.02);
  }

  .quick-shelf-item-book {
    width: 60px;
  }

  .quick-shelf-item-book .quick-shelf-art {
    width: 60px;
    height: 136px;
    border-radius: 0.62rem 0.34rem 0.34rem 0.62rem;
    background: linear-gradient(180deg, var(--shelf-tone-top), var(--shelf-tone-body));
    box-shadow:
      inset -10px 0 0 rgba(0, 0, 0, 0.16),
      inset -2px 0 0 rgba(255, 255, 255, 0.08),
      0 14px 22px rgba(0, 0, 0, 0.3);
    overflow: hidden;
  }

  .quick-shelf-item-book .quick-shelf-art::before {
    content: '';
    position: absolute;
    right: 6px;
    top: 8px;
    bottom: 8px;
    width: 8px;
    border-radius: 999px;
    background: linear-gradient(180deg, rgba(248, 238, 217, 0.88), rgba(208, 182, 147, 0.62));
  }

  .quick-shelf-item-book .quick-shelf-art::after {
    content: '';
    position: absolute;
    left: 8px;
    right: 19px;
    top: 16px;
    height: 20px;
    border-top: 1px solid rgba(250, 244, 230, 0.18);
    border-bottom: 1px solid rgba(250, 244, 230, 0.12);
  }

  .quick-shelf-book-title {
    position: absolute;
    inset: 34px 14px 16px 8px;
    writing-mode: vertical-rl;
    transform: rotate(180deg);
    font-family: 'Orbitron', sans-serif;
    font-size: 0.53rem;
    line-height: 1.12;
    letter-spacing: 0.13em;
    text-transform: uppercase;
    color: rgba(242, 236, 223, 0.85);
    overflow: hidden;
  }

  .quick-shelf-item-media {
    width: 102px;
  }

  .quick-shelf-item-media .quick-shelf-art {
    width: 98px;
    height: 98px;
    border-radius: 999px;
    border: 1px solid rgba(216, 227, 237, 0.15);
    background:
      radial-gradient(circle at 32% 25%, rgba(255, 255, 255, 0.16), transparent 27%),
      radial-gradient(circle at center, rgba(205, 217, 229, 0.14), transparent 58%),
      linear-gradient(180deg, var(--shelf-tone-top), var(--shelf-tone-body));
    box-shadow:
      inset 0 0 0 1px rgba(255, 255, 255, 0.05),
      0 14px 22px rgba(0, 0, 0, 0.26);
    overflow: hidden;
  }

  .quick-shelf-item-media .quick-shelf-art::before {
    content: '';
    position: absolute;
    inset: 11px;
    border-radius: 999px;
    background:
      radial-gradient(circle at center, rgba(11, 15, 20, 0.96) 0 9%, rgba(148, 163, 184, 0.52) 9% 12%, rgba(225, 233, 240, 0.92) 12% 22%, rgba(109, 122, 138, 0.84) 22% 40%, rgba(225, 233, 240, 0.86) 40% 64%, rgba(86, 98, 112, 0.84) 64% 100%);
    box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.14);
  }

  .quick-shelf-item-media .quick-shelf-art::after {
    content: '';
    position: absolute;
    inset: 37%;
    border-radius: 999px;
    background:
      radial-gradient(circle at center, rgba(9, 13, 19, 0.95) 0 35%, rgba(186, 199, 214, 0.7) 35% 52%, rgba(30, 40, 49, 0.92) 52% 100%);
    box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.12);
  }

  .quick-shelf-caption {
    width: min(12ch, 100%);
    display: -webkit-box;
    -webkit-box-orient: vertical;
    line-clamp: 2;
    -webkit-line-clamp: 2;
    overflow: hidden;
    text-overflow: ellipsis;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-size: 0.54rem;
    line-height: 1.18;
    color: rgba(206, 216, 226, 0.82);
  }

  .quick-shelf-item:hover .quick-shelf-art,
  .quick-shelf-item:focus-visible .quick-shelf-art {
    transform: translateY(-10px) rotate(-2deg);
    box-shadow:
      inset -10px 0 0 rgba(0, 0, 0, 0.16),
      inset -2px 0 0 rgba(255, 255, 255, 0.08),
      0 18px 28px rgba(0, 0, 0, 0.34);
    filter: brightness(1.06);
  }

  .quick-shelf-item-media:hover .quick-shelf-art,
  .quick-shelf-item-media:focus-visible .quick-shelf-art {
    transform: translateY(-8px) rotate(-8deg);
  }

  .quick-shelf-remove {
    position: absolute;
    top: -0.45rem;
    right: -0.45rem;
    width: 1.4rem;
    height: 1.4rem;
    border-radius: 999px;
    border: 1px solid rgba(239, 201, 156, 0.42);
    background: rgba(25, 17, 11, 0.88);
    color: rgba(239, 201, 156, 0.82);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 0.72rem;
    opacity: 0;
    transform: translateY(2px);
    transition: opacity 0.18s ease, transform 0.18s ease, border-color 0.18s ease;
    z-index: 3;
    cursor: pointer;
  }

  .quick-shelf-slot-media .quick-shelf-remove {
    top: 0.1rem;
    right: -0.2rem;
  }

  .quick-shelf-slot:hover .quick-shelf-remove,
  .quick-shelf-remove:focus-visible {
    opacity: 1;
    transform: translateY(0);
    border-color: rgba(239, 201, 156, 0.72);
    outline: none;
  }

  .quick-shelf-slot-confirming .quick-shelf-remove {
    opacity: 1;
    transform: translateY(0);
    animation: shelf-remove-trigger 260ms cubic-bezier(0.2, 0.9, 0.3, 1);
  }

  .shelf-removal-confirm {
    position: fixed;
    left: var(--shelf-popup-x, 0px);
    top: var(--shelf-popup-y, 0px);
    right: auto;
    bottom: auto;
    transform: translate3d(
      calc(-100% + 1.1rem + var(--shelf-popup-shift-x, 0px)),
      calc(-100% - 0.95rem + var(--shelf-popup-shift-y, 0px)),
      0
    );
    transform-origin: calc(100% - 1.1rem) calc(100% + 0.95rem);
    width: min(260px, calc(100vw - 2rem));
    padding: 0.78rem 0.82rem 0.82rem;
    border-radius: 0.95rem;
    border: 1px solid rgba(251, 191, 36, 0.34);
    background:
      linear-gradient(180deg, rgba(18, 12, 8, 0.98), rgba(9, 7, 6, 0.99)),
      radial-gradient(circle at top, rgba(251, 191, 36, 0.16), transparent 56%);
    box-shadow: 0 18px 34px rgba(0, 0, 0, 0.4);
    z-index: 40;
    animation: shelf-removal-pop 360ms cubic-bezier(0.18, 0.88, 0.24, 1.14);
    will-change: transform, opacity, filter;
    pointer-events: auto;
  }

  .storage-track .shelf-removal-confirm {
    border-color: rgba(125, 211, 252, 0.3);
    background:
      linear-gradient(180deg, rgba(8, 13, 19, 0.98), rgba(5, 8, 13, 0.99)),
      radial-gradient(circle at top, rgba(125, 211, 252, 0.16), transparent 58%);
  }

  .shelf-removal-confirm::after {
    content: '';
    position: absolute;
    right: 0.95rem;
    top: 100%;
    width: 14px;
    height: 14px;
    transform: translateY(-50%) rotate(45deg);
    border-right: 1px solid rgba(251, 191, 36, 0.3);
    border-bottom: 1px solid rgba(251, 191, 36, 0.3);
    background: rgba(10, 8, 6, 0.98);
  }

  .storage-track .shelf-removal-confirm::after {
    border-right-color: rgba(125, 211, 252, 0.24);
    border-bottom-color: rgba(125, 211, 252, 0.24);
    background: rgba(6, 9, 13, 0.98);
  }

  .shelf-removal-confirm-title {
    font-size: 0.62rem;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: rgba(253, 224, 71, 0.92);
  }

  .storage-track .shelf-removal-confirm-title {
    color: rgba(186, 230, 253, 0.92);
  }

  .shelf-removal-confirm-copy {
    margin-top: 0.48rem;
    font-family: 'Share Tech Mono', monospace;
    font-size: 0.68rem;
    line-height: 1.45;
    color: rgba(241, 245, 249, 0.88);
  }

  .shelf-removal-confirm-meta {
    margin-top: 0.45rem;
    font-family: 'Share Tech Mono', monospace;
    font-size: 0.58rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: rgba(251, 191, 36, 0.68);
  }

  .storage-track .shelf-removal-confirm-meta {
    color: rgba(125, 211, 252, 0.68);
  }

  .shelf-removal-confirm-actions {
    display: flex;
    gap: 0.42rem;
    margin-top: 0.7rem;
  }

  .shelf-removal-confirm-btn {
    flex: 1 1 0;
    border-radius: 999px;
    border: 1px solid rgba(148, 163, 184, 0.24);
    background: rgba(15, 23, 42, 0.48);
    color: rgba(226, 232, 240, 0.9);
    font-family: 'Orbitron', sans-serif;
    font-size: 0.56rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    padding: 0.52rem 0.66rem;
    cursor: pointer;
  }

  .shelf-removal-confirm-btn:focus-visible {
    outline: none;
    border-color: rgba(125, 211, 252, 0.6);
  }

  .shelf-removal-confirm-btn-danger {
    border-color: rgba(251, 191, 36, 0.34);
    background: rgba(86, 38, 14, 0.58);
    color: rgba(255, 244, 214, 0.96);
  }

  @keyframes shelf-remove-trigger {
    0% {
      transform: translateY(0) scale(1);
      box-shadow: 0 0 0 rgba(251, 191, 36, 0);
    }

    45% {
      transform: translateY(-1px) scale(1.15);
      box-shadow: 0 0 0 7px rgba(251, 191, 36, 0.08);
    }

    100% {
      transform: translateY(0) scale(1);
      box-shadow: 0 0 0 rgba(251, 191, 36, 0);
    }
  }

  @keyframes shelf-removal-pop {
    0% {
      opacity: 0;
      transform: translate3d(
        calc(-0.1rem + var(--shelf-popup-shift-x, 0px)),
        calc(0.2rem + var(--shelf-popup-shift-y, 0px)),
        0
      ) scale(0.18) rotate(7deg);
      filter: blur(8px);
    }

    58% {
      opacity: 1;
      transform: translate3d(
        calc(-100% + 1.16rem + var(--shelf-popup-shift-x, 0px)),
        calc(-100% - 1.02rem + var(--shelf-popup-shift-y, 0px)),
        0
      ) scale(1.03) rotate(-1.4deg);
      filter: blur(0);
    }

    100% {
      opacity: 1;
      transform: translate3d(
        calc(-100% + 1.1rem + var(--shelf-popup-shift-x, 0px)),
        calc(-100% - 0.95rem + var(--shelf-popup-shift-y, 0px)),
        0
      ) scale(1) rotate(0deg);
      filter: blur(0);
    }
  }

  .course-card[draggable="true"] {
    cursor: grab;
  }

  .course-card[draggable="true"]:active {
    cursor: grabbing;
  }

  .pill-choice-modal {
    position: fixed;
    inset: 0;
    z-index: 62;
    background: rgba(2, 6, 10, 0.84);
    overflow: hidden;
  }

  .pill-choice-modal.hidden {
    display: none;
  }

  /* Avoid Tailwind class conflicts in HTML while preserving modal centering. */
  #admin-draft-logout-modal:not(.hidden),
  #workbench-modal:not(.hidden) {
    display: flex;
  }

  .pill-choice-split {
    position: absolute;
    inset: 0;
  }

  .pill-choice-divider {
    position: absolute;
    inset: 0;
    pointer-events: none;
    background:
      linear-gradient(135deg,
        transparent calc(50% - 1px),
        rgba(226, 232, 240, 0.2) calc(50% - 1px),
        rgba(226, 232, 240, 0.2) calc(50% + 1px),
        transparent calc(50% + 1px));
  }

  .pill-choice-half {
    position: absolute;
    inset: 0;
    border: 0;
    padding: 0;
    margin: 0;
    background: transparent;
    cursor: pointer;
  }

  .pill-choice-half:focus-visible {
    outline: none;
  }

  .pill-choice-half-red {
    clip-path: polygon(0 0, 100% 0, 100% 100%);
    background:
      radial-gradient(circle at 80% 25%, rgba(248, 113, 113, 0.22), transparent 38%),
      linear-gradient(180deg, rgba(75, 12, 14, 0.86), rgba(38, 8, 10, 0.9));
    transition: filter 0.24s ease, opacity 0.24s ease;
  }

  .pill-choice-half-blue {
    clip-path: polygon(0 0, 0 100%, 100% 100%);
    background:
      radial-gradient(circle at 20% 72%, rgba(125, 211, 252, 0.2), transparent 42%),
      linear-gradient(180deg, rgba(11, 30, 64, 0.84), rgba(7, 18, 43, 0.9));
    transition: filter 0.24s ease, opacity 0.24s ease;
  }

  .pill-choice-half-red:hover,
  .pill-choice-half-red:focus-visible {
    filter: brightness(1.06);
  }

  .pill-choice-half-blue:hover,
  .pill-choice-half-blue:focus-visible {
    filter: brightness(1.06);
  }

  .pill-choice-symbol {
    position: absolute;
    width: 86px;
    height: 34px;
    border-radius: 999px;
    border: 1px solid rgba(255, 255, 255, 0.46);
    background: linear-gradient(160deg, rgba(255, 255, 255, 0.24), rgba(255, 255, 255, 0.04));
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.35), 0 10px 28px rgba(0, 0, 0, 0.24);
    backdrop-filter: blur(6px);
    pointer-events: none;
  }

  .pill-choice-symbol::before {
    content: '';
    position: absolute;
    left: 8px;
    top: 7px;
    width: 40%;
    height: 34%;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.3);
    filter: blur(0.3px);
  }

  .pill-choice-half-red .pill-choice-symbol {
    left: 67%;
    top: 31%;
    transform: translate(-50%, -50%) rotate(-24deg);
    border-color: rgba(254, 226, 226, 0.58);
  }

  .pill-choice-half-blue .pill-choice-symbol {
    left: 33%;
    top: 69%;
    transform: translate(-50%, -50%) rotate(-24deg);
    border-color: rgba(219, 234, 254, 0.56);
  }

  .red-launch-intro {
    position: fixed;
    inset: 0;
    z-index: 63;
    display: grid;
    place-items: center;
    background:
      radial-gradient(circle at 22% 18%, rgba(148, 163, 184, 0.18), transparent 34%),
      radial-gradient(circle at 78% 74%, rgba(96, 165, 250, 0.16), transparent 40%),
      linear-gradient(160deg, rgba(2, 6, 23, 0.86), rgba(2, 6, 23, 0.96)),
      url("../assets/thinking-space/deep-space.svg");
    background-size: cover;
    background-position: center;
    backdrop-filter: blur(3px);
  }

  .red-launch-intro.hidden {
    display: none;
  }

  .red-launch-intro-surface {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-end;
    gap: 0.8rem;
    padding: clamp(1rem, 3vw, 2rem);
    background: radial-gradient(circle at center, rgba(15, 23, 42, 0.1), rgba(2, 6, 23, 0.52));
  }

  .red-launch-intro-status {
    font-family: "Share Tech Mono", monospace;
    font-size: clamp(0.6rem, 1.2vw, 0.78rem);
    text-transform: uppercase;
    letter-spacing: 0.14em;
    color: rgba(226, 232, 240, 0.68);
    text-shadow: 0 0 12px rgba(148, 163, 184, 0.2);
    user-select: none;
  }

  body.red-launch-intro-active {
    overflow: hidden;
  }

  @media (max-width: 768px) {
    body.home-admin-save-island-visible .home-shell {
      padding-bottom: calc(7.4rem + env(safe-area-inset-bottom, 0px));
    }

    .admin-save-island {
      width: min(92vw, 360px);
      grid-template-columns: minmax(0, 1fr);
      gap: 0.72rem;
      border-radius: 0.9rem;
      padding: 0.72rem 0.78rem;
    }

    .admin-save-island-copy {
      gap: 0.18rem;
    }

    .admin-save-island-button {
      width: 100%;
      min-width: 0;
      min-height: 2.4rem;
    }

    .rail-user-name {
      margin-bottom: 0.34rem;
      font-size: 0.5rem;
      letter-spacing: 0.07em;
      opacity: 0.9;
    }

    .recall-queue-modal {
      padding: 0.55rem;
    }

    .recall-queue-modal-card {
      width: min(100%, calc(100vw - 12px));
      max-height: calc(100vh - 1.1rem);
    }

    .recall-queue-modal-controls {
      justify-content: flex-start;
      width: 100%;
    }

    .recall-queue-counts {
      grid-template-columns: 1fr;
    }

    .recall-analytics-grid {
      grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .recall-queue-item {
      flex-direction: column;
      align-items: flex-start;
    }

    .recall-queue-action {
      width: 100%;
      text-align: center;
    }

    .recall-response-header,
    .recall-response-footer {
      flex-direction: column;
      align-items: stretch;
    }

    .recall-response-actions,
    .recall-response-confidence {
      width: 100%;
    }

    .recall-response-submit,
    #recall-response-submit {
      width: 100%;
      text-align: center;
    }

    .hyperspace-mission-strip {
      align-items: flex-start;
      flex-direction: column;
    }

    .hyperspace-mission-action {
      width: 100%;
    }

    .quick-shelf-dock {
      left: 50px;
      right: 44px;
    }

    .pill-mode-grid {
      grid-template-columns: minmax(0, 1fr);
    }

    .quick-shelf-track {
      min-height: 236px;
      padding-bottom: 1.9rem;
      gap: 0.24rem;
    }

    .quick-shelf-slot-media {
      margin-right: 0.2rem;
      margin-left: 0.12rem;
    }
  }