/* The outline / tasks pair is a desktop overlap. Once the art column is
   narrower than both cards, stack them so the rail is not clipped. */
@container (max-width: 420px) {
  .deck-stage { padding-left: 42px; }

  .deck-card,
  .deck-outline,
  .deck-tasks {
    width: 100%;
    max-width: 100%;
  }

  .deck-pair {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    width: 100%;
    max-width: 100%;
    margin: 12px 0 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}

.cm {
  width: min(1080px, calc(100% - 48px));
  margin: 48px auto 96px;
  display: grid;
  grid-template-columns: 200px minmax(0, 1fr);
  gap: 48px;
  align-items: start;
}

.cm-side ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.cm-side a {
  display: block;
  padding: 6px 0;
  text-decoration: none;
  color: var(--ink-soft);
}

.cm-side a[aria-current="page"] {
  color: var(--ink);
  font-weight: 600;
}

.cm-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 24px;
}

.cm h1 {
  margin: 0;
  font-size: clamp(2.4rem, 5vw, 3.4rem);
}

.cm-lead,
.cm-hint,
.cm-empty {
  color: var(--ink-soft);
}

.cm-meta {
  color: var(--ink-faint);
  font-size: 0.88rem;
}

.cm-meta a { color: inherit; }

.cm-search {
  margin: 28px 0 8px;
}

.cm-search label {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
}

.cm-search input,
.cm-form input,
.cm-form textarea,
.cm-form select,
.cm-status select {
  width: 100%;
  margin-top: 6px;
  font: inherit;
  color: var(--ink);
  background: var(--paper);
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  padding: 10px 12px;
}

.cm-form label,
.cm-status label {
  display: block;
  margin-top: 16px;
  font-size: 0.85rem;
}

.cm-form textarea { min-height: 180px; resize: vertical; }

.cm-form .btn,
.cm-status .btn { margin-top: 18px; }

button.btn {
  border: 0;
  cursor: pointer;
  font: inherit;
  font-weight: 600;
}

.cm-topic {
  display: block;
  padding: 18px 0;
  border-top: 1px solid var(--line);
  text-decoration: none;
}

.cm-topic h2 {
  margin: 0 0 6px;
  font-size: 1.35rem;
}

.cm-list .cm-topic:last-child { border-bottom: 1px solid var(--line); }

.cm-body p { margin: 0 0 1em; }

.cm-reply {
  padding-top: 16px;
  border-top: 1px solid var(--line);
}

.cm-replies-title {
  margin-top: 36px;
  font-size: 1.4rem;
}

.cm-pager {
  display: flex;
  gap: 16px;
  margin-top: 20px;
}

.cm-error { font-weight: 600; }

.cm-status {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  gap: 12px;
  margin: 12px 0 20px;
}

.cm-status label { margin: 0; }
.cm-status select { width: auto; margin: 0; }
.cm-status .btn { margin: 0; }

.cm-who { color: var(--ink-soft); }

.cm-logout { display: inline; }

.cm-logout button {
  border: 0;
  padding: 0;
  background: none;
  color: var(--ink-soft);
  font: inherit;
  cursor: pointer;
}

.cm-logout button:hover { color: var(--ink); }

.cm-hp {
  position: absolute;
  left: -10000px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.top-nav form { display: inline; }

@media (max-width: 1080px) {
  .prose.prose-with-outline {
    display: block;
    max-width: 720px;
  }

  .outline { display: none; }
}

@media (max-width: 720px) {
  h1 { font-size: clamp(2.15rem, 10.5vw, 3.5rem); }

  .prose h1 { font-size: clamp(2.1rem, 9vw, 2.8rem); }

  html:has(#site-menu:target) { overflow: hidden; }

  .top {
    flex-wrap: nowrap;
    z-index: 5;
    padding-top: 10px;
    padding-bottom: 10px;
    transition: background 0.35s ease;
  }

  .top:has(#site-menu:target) {
    background: var(--paper);
    backdrop-filter: none;
  }

  .nav-switch {
    display: grid;
    position: relative;
    z-index: 6;
    place-items: center;
    width: 44px;
    height: 44px;
    margin-right: -10px;
  }

  .nav-burger-icon,
  .nav-hit { grid-area: 1 / 1; }

  .nav-burger-icon {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 18px;
    height: 14.5px;
    pointer-events: none;
  }

  .nav-burger-icon span {
    display: block;
    height: 1.5px;
    background: var(--ink);
    border-radius: 1px;
    transform-origin: center;
    transition: transform 0.45s cubic-bezier(0.22, 1, 0.36, 1), opacity 0.25s ease;
  }

  .top:has(#site-menu:target) .nav-burger-icon span:nth-child(1) {
    transform: translateY(6.5px) rotate(45deg);
  }

  .top:has(#site-menu:target) .nav-burger-icon span:nth-child(2) {
    opacity: 0;
  }

  .top:has(#site-menu:target) .nav-burger-icon span:nth-child(3) {
    transform: translateY(-6.5px) rotate(-45deg);
  }

  .nav-hit {
    width: 44px;
    height: 44px;
    overflow: hidden;
    text-indent: 100%;
    white-space: nowrap;
    cursor: pointer;
  }

  .nav-hit-close { visibility: hidden; }

  .top:has(#site-menu:target) .nav-hit-open { visibility: hidden; }

  .top:has(#site-menu:target) .nav-hit-close { visibility: visible; }

  .nav-hit:focus-visible {
    outline: 2px solid var(--ink);
    outline-offset: 4px;
  }

  .top-nav {
    position: fixed;
    inset: 0;
    z-index: 4;
    display: flex;
    flex-direction: column;
    justify-content: safe center;
    gap: 4px;
    margin: 0;
    padding:
      calc(84px + env(safe-area-inset-top, 0px))
      max(28px, env(safe-area-inset-right, 0px))
      max(40px, env(safe-area-inset-bottom, 0px))
      max(28px, env(safe-area-inset-left, 0px));
    background: var(--paper);
    overflow: auto;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transform: translateY(10px);
    transition:
      opacity 0.4s ease,
      transform 0.55s cubic-bezier(0.22, 1, 0.36, 1),
      visibility 0s linear 0.4s;
  }

  .top:has(#site-menu:target) .top-nav {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: none;
    transition:
      opacity 0.45s ease,
      transform 0.55s cubic-bezier(0.22, 1, 0.36, 1),
      visibility 0s;
  }

  .nav-dismiss,
  .top:has(#site-menu:target) .top-nav a.nav-dismiss {
    display: block;
    position: absolute;
    inset: 0;
    z-index: 0;
    opacity: 0;
    transform: none;
    padding: 0;
    cursor: pointer;
  }

  .top-nav a,
  .top-nav .cm-who,
  .top-nav .cm-logout {
    position: relative;
    z-index: 1;
    opacity: 0;
    transform: translateY(18px);
    transition:
      opacity 0.45s ease,
      transform 0.6s cubic-bezier(0.22, 1, 0.36, 1),
      color 0.2s ease;
  }

  .top:has(#site-menu:target) .top-nav a,
  .top:has(#site-menu:target) .top-nav .cm-who,
  .top:has(#site-menu:target) .top-nav .cm-logout {
    opacity: 1;
    transform: none;
  }

  .top:has(#site-menu:target) .top-nav a:nth-child(2),
  .top:has(#site-menu:target) .top-nav .cm-who:nth-child(2),
  .top:has(#site-menu:target) .top-nav .cm-logout:nth-child(2) { transition-delay: 0.05s; }

  .top:has(#site-menu:target) .top-nav a:nth-child(3),
  .top:has(#site-menu:target) .top-nav .cm-who:nth-child(3),
  .top:has(#site-menu:target) .top-nav .cm-logout:nth-child(3) { transition-delay: 0.1s; }

  .top:has(#site-menu:target) .top-nav a:nth-child(4),
  .top:has(#site-menu:target) .top-nav .cm-who:nth-child(4),
  .top:has(#site-menu:target) .top-nav .cm-logout:nth-child(4) { transition-delay: 0.15s; }

  .top:has(#site-menu:target) .top-nav a:nth-child(5),
  .top:has(#site-menu:target) .top-nav .cm-logout:nth-child(5) { transition-delay: 0.2s; }

  .top:has(#site-menu:target) .top-nav a:nth-child(6),
  .top:has(#site-menu:target) .top-nav .cm-who:nth-child(6),
  .top:has(#site-menu:target) .top-nav .cm-logout:nth-child(6) { transition-delay: 0.25s; }

  .top:has(#site-menu:target) .top-nav a:nth-child(7),
  .top:has(#site-menu:target) .top-nav .cm-logout:nth-child(7) { transition-delay: 0.3s; }

  .top-nav a {
    display: block;
    padding: 10px 0;
    color: var(--ink);
    font-family: var(--serif);
    font-size: clamp(2.15rem, 9vw, 3rem);
    font-weight: 520;
    letter-spacing: -0.03em;
    line-height: 1.15;
  }

  .top-nav a:hover { color: var(--ink-soft); }

  .top-nav .cm-who {
    margin-top: 12px;
    font-family: var(--sans);
    font-size: 0.95rem;
    color: var(--ink-faint);
  }

  .top-nav .cm-logout { display: block; }

  .top-nav .cm-logout button {
    padding: 10px 0;
    color: var(--ink);
    font-family: var(--serif);
    font-size: clamp(2.15rem, 9vw, 3rem);
    font-weight: 520;
    letter-spacing: -0.03em;
    line-height: 1.15;
  }

  .foot {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }

  .cm {
    grid-template-columns: 1fr;
    gap: 28px;
    width: min(1080px, calc(100% - 32px - env(safe-area-inset-left, 0px) - env(safe-area-inset-right, 0px)));
    margin-top: 28px;
    margin-bottom: 64px;
  }

  .cm-head { align-items: flex-start; flex-direction: column; }

  .cm-side ul {
    display: flex;
    flex-wrap: wrap;
    gap: 4px 16px;
  }

  .cm-side a { min-height: 44px; display: inline-flex; align-items: center; }

  @media (prefers-reduced-motion: reduce) {
    .top,
    .top-nav,
    .top-nav a,
    .top-nav .cm-who,
    .top-nav .cm-logout,
    .nav-burger-icon span {
      transition: none;
    }
  }
}