.mobile-contents-trigger,
.mobile-contents-backdrop,
.mobile-contents-drawer {
  display: none;
}

@media (max-width: 980px) {
  :root {
    --mobile-contents-top: 84px;
  }

  .mobile-contents-trigger {
    position: fixed;
    z-index: 930;
    top: var(--mobile-contents-top);
    left: max(10px, env(safe-area-inset-left));
    display: grid;
    grid-template-columns: 8px minmax(0, 1fr) auto;
    align-items: center;
    min-width: 146px;
    max-width: min(232px, calc(100vw - 20px));
    min-height: 46px;
    gap: 9px;
    padding: 7px 10px 7px 11px;
    color: var(--ink);
    border: 1px solid color-mix(in srgb, var(--blue) 26%, var(--line-strong));
    border-radius: 14px;
    background: color-mix(in srgb, var(--paper) 91%, transparent);
    box-shadow: 0 12px 30px rgba(6, 17, 31, 0.14);
    -webkit-backdrop-filter: blur(18px) saturate(145%);
    backdrop-filter: blur(18px) saturate(145%);
    cursor: pointer;
    text-align: left;
    transition: transform 170ms ease, opacity 170ms ease, border-color 170ms ease, box-shadow 170ms ease;
  }

  .mobile-contents-trigger:hover,
  .mobile-contents-trigger:focus-visible {
    color: var(--ink-strong);
    border-color: color-mix(in srgb, var(--blue) 58%, var(--line-strong));
    box-shadow: 0 0 0 3px var(--blue-soft), 0 14px 34px rgba(6, 17, 31, 0.16);
    outline: none;
  }

  .mobile-contents-trigger-mark {
    width: 8px;
    height: 24px;
    border-radius: 999px;
    background: linear-gradient(180deg, var(--blue-strong), var(--violet));
    box-shadow: 0 0 0 4px color-mix(in srgb, var(--blue) 10%, transparent);
  }

  .mobile-contents-trigger-copy {
    display: grid;
    min-width: 0;
    line-height: 1.05;
  }

  .mobile-contents-trigger-copy strong {
    color: var(--ink-strong);
    font-size: 0.72rem;
    font-weight: 900;
    letter-spacing: 0.02em;
  }

  .mobile-contents-trigger-copy small {
    overflow: hidden;
    margin-top: 5px;
    color: var(--muted);
    font-size: 0.64rem;
    font-weight: 760;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .mobile-contents-trigger-arrow {
    color: var(--blue);
    font-size: 0.95rem;
    font-weight: 900;
    transform: translateY(-1px);
  }

  .mobile-contents-backdrop {
    position: fixed;
    z-index: 1250;
    inset: 0;
    display: block;
    opacity: 0;
    visibility: hidden;
    background: rgba(3, 9, 17, 0.54);
    -webkit-backdrop-filter: blur(3px);
    backdrop-filter: blur(3px);
    pointer-events: none;
    transition: opacity 190ms ease, visibility 190ms step-end;
  }

  .mobile-contents-drawer {
    position: fixed;
    z-index: 1260;
    inset: 0 auto 0 0;
    display: grid;
    grid-template-rows: auto auto minmax(0, 1fr) auto;
    width: min(84vw, 328px);
    max-width: calc(100vw - 42px);
    overflow: hidden;
    color: var(--ink);
    border-right: 1px solid color-mix(in srgb, var(--blue) 23%, var(--line-strong));
    background:
      radial-gradient(circle at 0 0, color-mix(in srgb, var(--blue) 13%, transparent), transparent 18rem),
      color-mix(in srgb, var(--paper) 97%, var(--page-bg));
    box-shadow: 24px 0 70px rgba(0, 0, 0, 0.28);
    transform: translate3d(-104%, 0, 0);
    visibility: hidden;
    pointer-events: none;
    transition: transform 210ms cubic-bezier(0.22, 1, 0.36, 1), visibility 210ms step-end;
    overscroll-behavior: contain;
    touch-action: pan-y;
  }

  .mobile-contents-drawer-header {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 14px;
    padding: calc(18px + env(safe-area-inset-top)) 18px 15px;
    border-bottom: 1px solid var(--line);
  }

  .mobile-contents-drawer-eyebrow {
    margin: 0 0 3px;
    color: var(--blue);
    font-size: 0.62rem;
    font-weight: 900;
    letter-spacing: 0.14em;
    text-transform: uppercase;
  }

  .mobile-contents-drawer-title {
    margin: 0;
    color: var(--ink-strong);
    font-size: 1.18rem;
    line-height: 1.15;
    letter-spacing: -0.025em;
  }

  .mobile-contents-close {
    display: grid;
    width: 44px;
    height: 44px;
    padding: 0;
    place-items: center;
    color: var(--ink-strong);
    border: 1px solid var(--line-strong);
    border-radius: 14px;
    background: var(--paper-raised);
    cursor: pointer;
    font-size: 1.25rem;
    line-height: 1;
  }

  .mobile-contents-close:hover,
  .mobile-contents-close:focus-visible {
    border-color: color-mix(in srgb, var(--blue) 58%, var(--line-strong));
    box-shadow: 0 0 0 3px var(--blue-soft);
    outline: none;
  }

  .mobile-contents-current {
    display: grid;
    gap: 3px;
    margin: 14px 14px 8px;
    padding: 12px 13px;
    border: 1px solid color-mix(in srgb, var(--blue) 18%, var(--line));
    border-radius: 14px;
    background: linear-gradient(135deg, var(--blue-soft), color-mix(in srgb, var(--paper-raised) 82%, transparent));
  }

  .mobile-contents-current span {
    color: var(--muted);
    font-size: 0.61rem;
    font-weight: 850;
    letter-spacing: 0.12em;
    text-transform: uppercase;
  }

  .mobile-contents-current strong {
    overflow: hidden;
    color: var(--ink-strong);
    font-size: 0.81rem;
    line-height: 1.35;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .mobile-document-toc {
    align-content: start;
    gap: 3px;
    margin: 0;
    padding: 6px 14px 18px;
    overflow-y: auto;
    overscroll-behavior: contain;
    scrollbar-width: thin;
    scrollbar-color: color-mix(in srgb, var(--blue) 40%, transparent) transparent;
  }

  .mobile-document-toc a {
    position: relative;
    min-height: 44px;
    padding: 11px 14px 11px 16px;
    border: 1px solid transparent;
    border-left: 3px solid transparent;
    border-radius: 0 12px 12px 0;
    font-size: 0.82rem;
    font-weight: 760;
    line-height: 1.3;
  }

  .mobile-document-toc a:hover,
  .mobile-document-toc a:focus-visible {
    color: var(--ink-strong);
    border-color: color-mix(in srgb, var(--blue) 18%, transparent);
    border-left-color: color-mix(in srgb, var(--blue) 48%, transparent);
    background: var(--blue-soft);
    outline: none;
  }

  .mobile-document-toc a[aria-current="location"] {
    color: var(--ink-strong);
    border-color: color-mix(in srgb, var(--blue) 22%, transparent);
    border-left-color: var(--blue);
    background: linear-gradient(90deg, color-mix(in srgb, var(--blue) 16%, transparent), color-mix(in srgb, var(--violet) 6%, transparent));
    box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--blue) 6%, transparent);
  }

  .mobile-document-toc a[aria-current="location"]::after {
    content: "Current";
    float: right;
    margin-left: 8px;
    color: var(--blue);
    font-size: 0.56rem;
    font-weight: 900;
    letter-spacing: 0.08em;
    text-transform: uppercase;
  }

  .mobile-contents-drawer-footer {
    display: flex;
    align-items: center;
    gap: 9px;
    padding: 13px 16px calc(13px + env(safe-area-inset-bottom));
    color: var(--muted);
    border-top: 1px solid var(--line);
    background: color-mix(in srgb, var(--paper-raised) 88%, transparent);
    font-size: 0.66rem;
    font-weight: 760;
  }

  .mobile-contents-drawer-footer i {
    width: 8px;
    height: 8px;
    flex: 0 0 8px;
    border-radius: 50%;
    background: var(--green);
    box-shadow: 0 0 0 4px color-mix(in srgb, var(--green) 13%, transparent);
  }

  html.doc-mobile-contents-open,
  html.doc-mobile-contents-open body {
    overflow: hidden;
    overscroll-behavior: none;
  }

  html.doc-mobile-contents-open .mobile-contents-trigger {
    opacity: 0;
    transform: translateX(-12px);
    pointer-events: none;
  }

  html.doc-mobile-contents-open .mobile-contents-backdrop {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transition: opacity 190ms ease, visibility 0s;
  }

  html.doc-mobile-contents-open .mobile-contents-drawer {
    visibility: visible;
    transform: translate3d(0, 0, 0);
    pointer-events: auto;
    transition: transform 210ms cubic-bezier(0.22, 1, 0.36, 1), visibility 0s;
  }
}

@media (max-width: 430px) {
  .mobile-contents-trigger {
    min-width: 136px;
    max-width: min(208px, calc(100vw - 20px));
  }

  .mobile-contents-drawer {
    width: min(88vw, 318px);
    max-width: calc(100vw - 34px);
  }
}

/* On small screens Contents belongs in the toolbar. It must never float over the paper. */
@media (max-width: 980px) {
  .document-actions .mobile-contents-trigger {
    position: static;
    z-index: auto;
    top: auto;
    left: auto;
    display: grid;
    grid-template-columns: 1fr;
    grid-template-rows: 1fr;
    align-self: center;
    width: 38px;
    min-width: 38px;
    max-width: 38px;
    min-height: 38px;
    height: 38px;
    box-sizing: border-box;
    gap: 0;
    padding: 0;
    overflow: hidden;
    line-height: 1;
    border-color: var(--line);
    border-radius: 10px;
    background: var(--paper);
    box-shadow: none;
    -webkit-backdrop-filter: none;
    backdrop-filter: none;
  }

  .document-actions .mobile-contents-trigger:hover,
  .document-actions .mobile-contents-trigger:focus-visible {
    border-color: var(--line-strong);
    background: var(--paper-soft);
    box-shadow: none;
  }

  .document-actions .mobile-contents-trigger-mark,
  .document-actions .mobile-contents-trigger-copy,
  .document-actions .mobile-contents-trigger-arrow {
    display: none;
  }

  .document-actions .mobile-contents-trigger::before {
    content: "≡";
    grid-area: 1 / 1;
    place-self: center;
    margin: 0;
    color: var(--ink-strong);
    font-size: 1.25rem;
    font-weight: 760;
    line-height: 1;
    text-align: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  .mobile-contents-trigger,
  .mobile-contents-backdrop,
  .mobile-contents-drawer {
    transition: none !important;
  }
}

@media print {
  .mobile-contents-trigger,
  .mobile-contents-backdrop,
  .mobile-contents-drawer {
    display: none !important;
  }
}