/* Notation guide — page-specific layout on top of style.css tokens/components.
   No token definitions here; the palette, fonts, dice, and buttons come from
   style.css. This page scrolls normally (unlike the fixed-viewport playground). */

.ref-body {
  min-height: 100dvh;
}

/*
 * * Header
 */

.ref-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
  max-width: 1080px;
  margin: 0 auto;
  padding: 1.5rem 1.25rem 1rem;
}

.ref-home {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
  color: var(--text-muted);
  /* Rounds the shared focus ring; there is no painted border to round. */
  border-radius: 10px;
  transition: color 150ms ease;
}

.ref-home:hover {
  color: var(--accent);
}

.ref-logo-die {
  width: 40px;
  height: 40px;
}

.ref-home-word {
  font-family: var(--font-head);
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: inherit;
}

.ref-title {
  margin: 0;
  font-family: var(--font-head);
  font-size: clamp(1.6rem, 5vw, 2.4rem);
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--text);
}

/*
 * * Layout
 */

.ref-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.5rem;
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 1.25rem 4rem;
}

@media (min-width: 900px) {
  .ref-layout {
    grid-template-columns: 192px minmax(0, 1fr);
    gap: 2.75rem;
    align-items: start;
  }
}

/*
 * * Table of contents
 */

.toc {
  display: flex;
  flex-wrap: nowrap;
  gap: 0.4rem;
  overflow-x: auto;
  padding: 0.5rem 0;
  position: sticky;
  top: 0;
  z-index: 4;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  scrollbar-width: thin;
}

.toc-link {
  flex: 0 0 auto;
  padding: 0.3rem 0.7rem;
  font-family: var(--font-head);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  white-space: nowrap;
  color: var(--text-muted);
  text-decoration: none;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 999px;
  transition:
    color 150ms ease,
    border-color 150ms ease,
    background 150ms ease;
}

.toc-link:hover {
  color: var(--accent);
  border-color: var(--accent);
  background: var(--surface-strong);
}

@media (min-width: 900px) {
  .toc {
    flex-direction: column;
    flex-wrap: nowrap;
    overflow-x: visible;
    top: 1.5rem;
    gap: 0;
    padding: 0;
    background: none;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
  }

  /* Sidebar links read as a list, not pills: no tracking, no gap — the padding
     carries the rhythm and doubles as the hover hit area. */
  .toc-link {
    position: relative;
    padding: 0.5rem 0.85rem;
    font-size: 0.875rem;
    letter-spacing: normal;
    border-color: transparent;
    background: none;
    text-align: left;
  }

  .toc-link:hover {
    background: var(--surface);
  }

  /* Pseudo-element, not a border or inset shadow: both trace the 999px pill radius
     the mobile strip needs and ring the whole link. */
  .toc-link.is-active {
    color: var(--accent);
    background: var(--surface);
  }

  .toc-link.is-active::before {
    content: '';
    position: absolute;
    left: 6px;
    top: 32%;
    bottom: 36%;
    width: 2px;
    border-radius: 2px;
    background: var(--accent);
  }
}

/*
 * * Sections
 */

/* The offset clears the TOC, which sticks across the top of the viewport at this
   width (~54px tall) and would otherwise cover the heading a TOC link jumps to. */
.ref-section {
  scroll-margin-top: 4.5rem;
  margin-bottom: 3rem;
}

/* ! Must stay after the rule above — media queries add no specificity, so the
   base value would otherwise win on both layouts. */
@media (min-width: 900px) {
  /* The TOC is a sidebar here and covers nothing, so the full offset would just
     park the heading 72px down with the previous section still in frame. Match
     the sidebar's own sticky `top` instead, so the two align. */
  .ref-section {
    scroll-margin-top: 1.5rem;
  }
}

.ref-section-title {
  margin: 0 0 1.1rem;
  font-family: var(--font-head);
  font-size: clamp(1.25rem, 3.5vw, 1.7rem);
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--text);
  border-bottom: 1px solid var(--border);
  padding-bottom: 0.5rem;
}

.widgets {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

@media (min-width: 620px) {
  .widgets {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

/*
 * * Widgets
 */

.widget {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  padding: 1.1rem 1.2rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  cursor: pointer;
  transition:
    transform var(--spring),
    border-color 150ms ease,
    background 150ms ease;
}

.widget:hover {
  transform: translateY(-3px);
  border-color: var(--accent);
  background: var(--surface-strong);
}

.widget-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}

.widget-notation {
  font-family: var(--font-mono);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text);
  word-break: break-word;
}

.widget-roll {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.3rem 0.7rem;
  font-family: var(--font-head);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--text-muted);
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 999px;
  cursor: pointer;
  transition:
    color 150ms ease,
    border-color 150ms ease,
    transform 150ms ease;
}

.widget-roll:hover {
  color: var(--accent);
  border-color: var(--accent);
}

.widget-roll:active {
  transform: scale(0.94);
}

.widget-roll-glyph.icon-svg {
  width: 0.95em;
  height: 0.95em;
}

.widget-note {
  margin: 0;
  font-family: var(--font-body);
  font-size: 0.98rem;
  line-height: 1.5;
  color: var(--text-muted);
}

.widget-result:empty {
  display: none;
}

.widget-result {
  margin-top: 0.2rem;
}

.widget-tray {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-bottom: 0.75rem;
}

.widget-panel {
  text-align: left;
}

@media (prefers-reduced-motion: no-preference) {
  .widget-panel {
    animation: widget-rise var(--spring) both;
  }
}

@keyframes widget-rise {
  from {
    opacity: 0;
    transform: translateY(6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Scale the shared result renderer down to widget size. */
.widget-panel .total {
  margin: 0;
  font-size: 2.4rem;
}

.widget-panel .success-summary {
  justify-content: flex-start;
  gap: 1.1rem;
}

.widget-panel .count-item b {
  font-size: 2rem;
}

.widget-panel .breakdown {
  margin: 0.5rem 0 0;
  font-size: 0.9rem;
  line-height: 1.6;
}

.widget-panel .expr-note {
  margin-top: 0.5rem;
}

.widget-error {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

/* Pinned to the card's bottom edge — `margin-top: auto` lets a short card leave
   a gap rather than float the link up under the note. Padding is the hit area
   (misclicks used to roll the widget); the negative inset keeps the text
   optically flush with the card's left edge. */
.widget-open {
  align-self: flex-start;
  margin-top: auto;
  margin-left: -0.5rem;
  padding: 0.4rem 0.5rem;
  font-family: var(--font-body);
  font-size: 0.82rem;
  color: var(--text-dim);
  text-decoration: none;
  border-radius: 8px;
  transition:
    color 150ms ease,
    background 150ms ease;
}

.widget-open:hover {
  color: var(--accent);
  background: var(--surface-strong);
  text-decoration: underline dotted var(--accent-soft);
  text-underline-offset: 3px;
}

/*
 * * Footer
 */

.ref-body .footer {
  max-width: 1080px;
  margin: 0 auto;
  padding: 1.5rem 1.25rem 2.5rem;
}