/* ── Masthead ─────────────────────────────────────────────────────────── */

.masthead {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  width: min(var(--shell-width), 100%);
  margin-inline: auto;
  padding: var(--space-3) var(--shell-gutter);
  background: color-mix(in oklab, var(--bg) 82%, transparent);
  backdrop-filter: blur(14px) saturate(1.4);
  border-bottom: 1px solid transparent;
  transition: border-color var(--duration-base) var(--ease-out);
}

.masthead[data-stuck="true"] {
  border-bottom-color: var(--border);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--text);
  font-weight: 660;
  letter-spacing: -0.02em;
  text-decoration: none;
}

.brand__mark {
  width: 1.375rem;
  height: 1.375rem;
  border-radius: var(--radius-sm);
  background: linear-gradient(140deg, var(--swatch-5), var(--swatch-2));
  box-shadow: inset 0 0 0 1px oklch(1 0 0 / 0.18);
  transition: background var(--duration-slow) var(--ease-out);
}

.brand__accent {
  color: var(--accent-text);
}

.masthead__actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.hint {
  display: grid;
  place-items: center;
  min-width: 1.5rem;
  height: 1.5rem;
  padding-inline: var(--space-1);
  border: 1px solid var(--border);
  border-bottom-width: 2px;
  border-radius: var(--radius-sm);
  background: var(--surface);
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
}

.hint__label {
  color: var(--text-muted);
  font-size: var(--text-sm);
  margin-right: var(--space-2);
}

@media (max-width: 780px) {
  .hint,
  .hint__label {
    display: none;
  }
}

.icon-button {
  display: grid;
  place-items: center;
  width: 2.25rem;
  height: 2.25rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--surface);
  transition:
    background var(--duration-fast) var(--ease-out),
    border-color var(--duration-fast) var(--ease-out),
    transform var(--duration-fast) var(--ease-out);
}

.icon-button:hover {
  background: var(--surface-raised);
  border-color: var(--border-strong);
}

.icon-button:active {
  transform: scale(0.94);
}

.icon-button__icon {
  display: none;
  width: 1.05rem;
  height: 1.05rem;
  fill: none;
  stroke: currentcolor;
  stroke-width: 1.9;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* Show only the icon for the preference currently in force. */
:root[data-scheme-pref="system"] .icon-button__icon[data-icon="system"],
:root[data-scheme-pref="light"] .icon-button__icon[data-icon="light"],
:root[data-scheme-pref="dark"] .icon-button__icon[data-icon="dark"] {
  display: block;
}

/* ── Hero ─────────────────────────────────────────────────────────────── */

.hero {
  display: grid;
  /* minmax(0, …) stops a long word from sizing the column wider than the page. */
  grid-template-columns: minmax(0, 1fr);
  justify-items: center;
  gap: var(--space-4);
  padding-block: clamp(var(--space-5), 4.5vw, var(--space-7)) var(--space-5);
  text-align: center;
}

.hero__title {
  max-width: 100%;
  font-size: var(--text-display);
  font-weight: 680;
  letter-spacing: -0.038em;
  max-width: 20ch;
}

.hero__lede {
  max-width: 56ch;
  color: var(--text-muted);
  font-size: var(--text-md);
}

/* ── Search ───────────────────────────────────────────────────────────── */

.search {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  width: min(46rem, 100%);
  margin-top: var(--space-2);
}

/* Below this width the field and button cannot share a row without the button
   wrapping to an awkward half-width. Stack them deliberately instead. */
@media (max-width: 560px) {
  .search {
    flex-direction: column;
    align-items: stretch;
  }

  .search > .button {
    width: 100%;
  }
}

.search__field {
  position: relative;
  flex: 1 1 16rem;
  min-width: 0;
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding-inline: var(--space-4);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--surface);
  box-shadow: var(--shadow-sm);
  transition:
    border-color var(--duration-fast) var(--ease-out),
    box-shadow var(--duration-fast) var(--ease-out);
}

.search__field:focus-within {
  border-color: var(--accent);
  box-shadow: 0 0 0 4px var(--ring);
}

.search__icon {
  flex: none;
  width: 1.125rem;
  height: 1.125rem;
  fill: none;
  stroke: var(--text-muted);
  stroke-width: 1.8;
  stroke-linecap: round;
}

.search__input {
  flex: 1;
  min-width: 0;
  height: 3.25rem;
  border: 0;
  background: none;
  font-size: var(--text-md);
}

.search__input:focus {
  outline: none;
}

.search__input::placeholder {
  color: var(--text-muted);
  opacity: 0.75;
}

.search__clear {
  flex: none;
  display: grid;
  place-items: center;
  width: 1.5rem;
  height: 1.5rem;
  border: 0;
  border-radius: 50%;
  background: var(--accent-soft);
  color: var(--text-muted);
}

.search__clear svg {
  width: 0.75rem;
  height: 0.75rem;
  fill: none;
  stroke: currentcolor;
  stroke-width: 2.4;
  stroke-linecap: round;
}

.search__clear:hover {
  color: var(--text);
}

/* ── Typeahead ────────────────────────────────────────────────────────── */

.suggestions {
  position: absolute;
  inset-inline: 0;
  top: calc(100% + var(--space-2));
  z-index: 30;
  max-height: 19rem;
  overflow-y: auto;
  overscroll-behavior: contain;
  margin: 0;
  padding: var(--space-1);
  list-style: none;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--surface-raised);
  box-shadow: var(--shadow-lg);
  text-align: left;
}

.suggestions:not([hidden]) {
  animation: pop var(--duration-fast) var(--ease-out);
}

.suggestion {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
  cursor: pointer;
}

.suggestion[aria-selected="true"],
.suggestion:hover {
  background: var(--accent-soft);
}

.suggestion__dot {
  flex: none;
  width: 0.75rem;
  height: 0.75rem;
  border-radius: 50%;
  box-shadow: inset 0 0 0 1px oklch(0 0 0 / 0.12);
}

.suggestion__name {
  font-weight: 560;
}

.suggestion__meta {
  margin-left: auto;
  color: var(--text-muted);
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

/* ── Buttons ──────────────────────────────────────────────────────────── */

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  height: 3.25rem;
  padding-inline: var(--space-5);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--surface);
  color: var(--text);
  font-size: var(--text-base);
  font-weight: 580;
  white-space: nowrap;
  transition:
    background var(--duration-fast) var(--ease-out),
    border-color var(--duration-fast) var(--ease-out),
    transform var(--duration-fast) var(--ease-out),
    box-shadow var(--duration-fast) var(--ease-out);
}

.button:hover {
  border-color: var(--border-strong);
  background: var(--surface-raised);
}

.button:active {
  transform: translateY(1px);
}

.button[disabled] {
  opacity: 0.55;
  pointer-events: none;
}

.button--primary {
  border-color: transparent;
  background: var(--accent);
  color: var(--on-accent);
  box-shadow: var(--shadow-md);
}

.button--primary:hover {
  background: var(--accent-hover);
  border-color: transparent;
}

.button__icon {
  width: 1rem;
  height: 1rem;
  fill: none;
  stroke: currentcolor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.button[data-busy="true"] .button__icon {
  animation: spin 900ms linear infinite;
}

/* ── Chips ────────────────────────────────────────────────────────────── */

.chips {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-2);
  max-width: 54rem;
}

@media (max-width: 720px) {
  .chips {
    flex-wrap: nowrap;
    justify-content: flex-start;
    width: 100%;
    padding-bottom: var(--space-1);
    overflow-x: auto;
    overscroll-behavior-x: contain;
    scrollbar-width: none;
    /* Bleed to the screen edge so the row reads as scrollable. */
    margin-inline: calc(var(--shell-gutter) * -1);
    padding-inline: var(--shell-gutter);
    scroll-padding-inline: var(--shell-gutter);
  }

  .chips::-webkit-scrollbar {
    display: none;
  }

  .chip {
    flex: none;
  }
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  height: 2rem;
  padding-inline: var(--space-3);
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  background: var(--surface);
  color: var(--text-muted);
  font-size: var(--text-sm);
  font-weight: 540;
  transition:
    color var(--duration-fast) var(--ease-out),
    border-color var(--duration-fast) var(--ease-out),
    background var(--duration-fast) var(--ease-out);
}

.chip:hover {
  color: var(--text);
  border-color: var(--accent);
  background: var(--accent-soft);
}

.chip[aria-current="true"] {
  color: var(--on-accent);
  background: var(--accent);
  border-color: transparent;
}

.chip__dot {
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 50%;
  box-shadow: inset 0 0 0 1px oklch(0 0 0 / 0.12);
}

.chips__label {
  align-self: center;
  color: var(--text-muted);
  font-size: var(--text-sm);
}

/* ── Board bar ────────────────────────────────────────────────────────── */

.board-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-4);
  padding-block: var(--space-5) var(--space-4);
  border-top: 1px solid var(--border);
  margin-top: var(--space-4);
}

.board-bar__identity {
  flex: 1 1 14rem;
  min-width: 0;
}

.board-bar__title {
  font-size: var(--text-xl);
  text-transform: capitalize;
}

.board-bar__note {
  margin-top: var(--space-1);
  color: var(--text-muted);
  font-size: var(--text-sm);
  min-height: 1.4em;
}

.board-bar__actions {
  display: flex;
  gap: var(--space-2);
}

.board-bar__actions .button {
  height: 2.5rem;
  padding-inline: var(--space-4);
  font-size: var(--text-sm);
}

/* ── Palette strip ────────────────────────────────────────────────────── */

.palette {
  display: flex;
  gap: var(--space-1);
  padding: var(--space-1);
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  background: var(--surface);
}

.swatch {
  position: relative;
  width: 2.25rem;
  height: 1.75rem;
  border: 0;
  border-radius: var(--radius-pill);
  box-shadow: inset 0 0 0 1px oklch(0 0 0 / 0.1);
  transition: transform var(--duration-fast) var(--ease-out);
}

.swatch:hover,
.swatch:focus-visible {
  transform: translateY(-2px) scale(1.06);
  z-index: 1;
}

/* ── Grid ─────────────────────────────────────────────────────────────── */

.board {
  scroll-margin-top: 5rem;
}

.grid {
  display: grid;
  /* Claimed so a mood change cross-fades the board as one element. */
  view-transition-name: board;
  grid-template-columns: repeat(auto-fill, minmax(min(clamp(150px, 20vw, 230px), 100%), 1fr));
  /* Row height scales with the column width so tiles keep a portrait-ish ratio
     instead of turning into narrow towers on a phone. */
  grid-auto-rows: clamp(7rem, 13vw, 11rem);
  grid-auto-flow: dense;
  gap: clamp(var(--space-2), 1vw, var(--space-4));
}

.tile {
  position: relative;
  grid-row: span 2;
  overflow: hidden;
  border-radius: var(--radius-md);
  background: var(--accent-soft);
  box-shadow: var(--shadow-sm);
  /* Paint cost of off-screen tiles is skipped until they scroll near. */
  content-visibility: auto;
  contain-intrinsic-size: auto 22rem;
}

/* An editorial rhythm rather than a uniform mosaic: every fifth tile runs
   tall, every seventh runs wide. `grid-auto-flow: dense` backfills the gaps. */
.tile:nth-child(5n + 1) {
  grid-row: span 3;
}

.tile:nth-child(7n + 3) {
  grid-column: span 2;
}

@media (max-width: 640px) {
  .tile:nth-child(7n + 3) {
    grid-column: span 1;
  }
}

.tile__button {
  display: block;
  width: 100%;
  height: 100%;
  padding: 0;
  border: 0;
  background: none;
}

.tile img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0;
  transform: scale(1.04);
  transition:
    opacity var(--duration-slow) var(--ease-out),
    transform var(--duration-slow) var(--ease-out);
}

.tile[data-loaded="true"] img {
  opacity: 1;
  transform: scale(1);
}

@media (hover: hover) {
  .tile:hover img {
    transform: scale(1.05);
  }
}

.tile__caption {
  position: absolute;
  inset: auto 0 0;
  display: grid;
  gap: 2px;
  padding: var(--space-5) var(--space-3) var(--space-3);
  background: linear-gradient(to top, oklch(0 0 0 / 0.78), transparent);
  color: oklch(0.99 0 0);
  text-align: left;
  opacity: 0;
  translate: 0 6px;
  transition:
    opacity var(--duration-base) var(--ease-out),
    translate var(--duration-base) var(--ease-out);
}

.tile:hover .tile__caption,
.tile:focus-within .tile__caption {
  opacity: 1;
  translate: 0;
}

.tile__title {
  font-size: var(--text-sm);
  font-weight: 600;
  line-height: 1.3;
  overflow: hidden;
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
  line-clamp: 2;
}

.tile__credit {
  font-size: var(--text-xs);
  opacity: 0.82;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.tile__badge {
  position: absolute;
  top: var(--space-2);
  left: var(--space-2);
  padding: 2px var(--space-2);
  border-radius: var(--radius-pill);
  background: oklch(0 0 0 / 0.6);
  color: oklch(1 0 0 / 0.92);
  font-size: 0.6875rem;
  font-weight: 560;
  letter-spacing: 0.02em;
  opacity: 0;
  transition: opacity var(--duration-base) var(--ease-out);
}

.tile:hover .tile__badge,
.tile:focus-within .tile__badge {
  opacity: 1;
}

/* Entrance: a short stagger, capped so late tiles are not left waiting. */
.tile--enter {
  animation: rise var(--duration-slow) var(--ease-out) both;
  animation-delay: calc(var(--index, 0) * 34ms);
}

/* ── Skeletons and empty state ────────────────────────────────────────── */

.tile--skeleton {
  background:
    linear-gradient(100deg, transparent 20%, var(--surface-raised) 50%, transparent 80%) var(--surface),
    var(--accent-soft);
  background-size: 260% 100%;
  animation: shimmer 1.5s linear infinite;
}

.board-empty {
  display: grid;
  place-items: center;
  gap: var(--space-3);
  padding: var(--space-8) var(--space-4);
  border: 1px dashed var(--border-strong);
  border-radius: var(--radius-lg);
  text-align: center;
  color: var(--text-muted);
}

.board-empty h3 {
  color: var(--text);
  font-size: var(--text-lg);
}

.sources {
  padding-block: var(--space-5) var(--space-6);
  color: var(--text-muted);
  font-size: var(--text-sm);
  text-align: center;
  min-height: 2.5em;
}

/* ── Footer ───────────────────────────────────────────────────────────── */

.footer {
  width: min(var(--shell-width), 100%);
  margin-inline: auto;
  padding: var(--space-5) var(--shell-gutter) var(--space-7);
  border-top: 1px solid var(--border);
  color: var(--text-muted);
  font-size: var(--text-sm);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: var(--space-3);
}

.footer p {
  max-width: 68ch;
}

/* ── Lightbox ─────────────────────────────────────────────────────────── */

.lightbox {
  /* Restores the centring the global margin reset removes from <dialog>. */
  margin: auto;
  width: min(1100px, 100vw - 2rem);
  max-width: none;
  max-height: min(92svh, 100svh - 2rem);
  padding: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--surface);
  color: var(--text);
  overflow: hidden;
}

.lightbox::backdrop {
  background: oklch(0.12 0.01 var(--hue) / 0.72);
  backdrop-filter: blur(6px);
}

.lightbox[open] {
  animation: pop var(--duration-base) var(--ease-out);
}

.lightbox__stage {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2);
}

.lightbox__figure {
  display: grid;
  gap: var(--space-3);
  min-width: 0;
}

.lightbox__figure img {
  width: 100%;
  max-height: 62svh;
  object-fit: contain;
  border-radius: var(--radius-md);
  background: var(--surface-raised);
}

.lightbox__caption {
  display: grid;
  gap: var(--space-1);
  padding: 0 var(--space-2) var(--space-3);
}

.lightbox__caption h3 {
  font-size: var(--text-lg);
}

.lightbox__caption p {
  color: var(--text-muted);
  font-size: var(--text-sm);
}

.lightbox__links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  margin-top: var(--space-1);
  font-size: var(--text-sm);
}

.lightbox__nav,
.lightbox__close {
  display: grid;
  place-items: center;
  width: 2.5rem;
  height: 2.5rem;
  border: 1px solid var(--border);
  border-radius: 50%;
  background: var(--surface-raised);
  color: var(--text);
  transition:
    background var(--duration-fast) var(--ease-out),
    transform var(--duration-fast) var(--ease-out);
}

.lightbox__nav svg,
.lightbox__close svg {
  width: 1.125rem;
  height: 1.125rem;
  fill: none;
  stroke: currentcolor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.lightbox__nav:hover,
.lightbox__close:hover {
  background: var(--accent-soft);
}

.lightbox__nav:active {
  transform: scale(0.92);
}

.lightbox__close {
  position: absolute;
  top: var(--space-3);
  right: var(--space-3);
}

@media (max-width: 640px) {
  .lightbox__stage {
    grid-template-columns: 1fr;
  }

  .lightbox__nav {
    position: absolute;
    top: 50%;
    translate: 0 -50%;
  }

  .lightbox__nav--prev {
    left: var(--space-3);
  }

  .lightbox__nav--next {
    right: var(--space-3);
  }
}

/* ── Toast ────────────────────────────────────────────────────────────── */

.toast {
  position: fixed;
  left: 50%;
  bottom: var(--space-5);
  z-index: 60;
  translate: -50% 0;
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-pill);
  background: var(--text);
  color: var(--bg);
  font-size: var(--text-sm);
  font-weight: 560;
  box-shadow: var(--shadow-lg);
  animation: pop var(--duration-base) var(--ease-out);
}

/* ── Keyframes ────────────────────────────────────────────────────────── */

@keyframes rise {
  from {
    opacity: 0;
    translate: 0 14px;
  }
  to {
    opacity: 1;
    translate: 0 0;
  }
}

@keyframes pop {
  from {
    opacity: 0;
    scale: 0.97;
  }
  to {
    opacity: 1;
    scale: 1;
  }
}

@keyframes shimmer {
  to {
    background-position: -260% 0;
  }
}

@keyframes spin {
  to {
    rotate: 360deg;
  }
}

/* Cross-fade the whole board when the mood changes, where supported. */
@view-transition {
  navigation: none;
}

::view-transition-old(board),
::view-transition-new(board) {
  animation-duration: var(--duration-base);
}