/* ============================================================
   DARKROOM ARCADE — shared design tokens & components
   Loaded by every page. Keep page-specific CSS in the page itself.
   ============================================================ */

:root {
  --bg: #141416;
  --surface-1: #1c1c1f;
  --surface-2: #232326;
  --surface-3: #2d2d31;
  --line: #38383d;
  --ink: #ece7de;
  --ink-dim: #9d988e;
  --ink-faint: #6a665f;
  --violet: #8f6bff;
  --coral: #ff6f59;
  --brand-grad: linear-gradient(115deg, var(--violet) 0%, #b674ff 45%, var(--coral) 100%);
  --radius-card: 14px;
  --radius-sm: 8px;
  color-scheme: dark;
  padding-top: env(safe-area-inset-top, 0px);
  padding-bottom: env(safe-area-inset-bottom, 0px);
}

:root[data-theme="light"] {
  --bg: #f3f0e9;
  --surface-1: #ffffff;
  --surface-2: #fbf9f4;
  --surface-3: #efeadf;
  --line: #e0dace;
  --ink: #221f1c;
  --ink-dim: #5f594e;
  --ink-faint: #8a8375;
  color-scheme: light;
}

* {
  box-sizing: border-box;
}

html {
  scroll-padding-top: env(safe-area-inset-top, 0px);
}

html,
body {
  height: 100%;
}

body {
  margin: 0;
  background:
    radial-gradient(circle at 15% 0%, rgba(143, 107, 255, 0.08), transparent 40%),
    radial-gradient(circle at 85% 15%, rgba(255, 111, 89, 0.06), transparent 45%),
    var(--bg);
  color: var(--ink);
  font-family: 'Inter', system-ui, sans-serif;
  min-height: 100%;
  -webkit-font-smoothing: antialiased;
  transition: background-color .25s ease, color .25s ease;
}

.mono {
  font-family: 'JetBrains Mono', ui-monospace, monospace;
}

.display {
  font-family: 'Space Grotesk', 'Inter', sans-serif;
}

a {
  color: inherit;
}

:focus-visible {
  outline: 2px solid var(--violet);
  outline-offset: 2px;
  border-radius: 4px;
}

.shell {
  max-width: 980px;
  margin: 0 auto;
  padding: 2.25rem 1.25rem 4rem;
}

/* ---------- Header / brand ---------- */
.brandbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 2.5rem;
  gap: 1rem;
}

.wordmark {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: 1.35rem;
  letter-spacing: 0.01em;
  background: var(--brand-grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  display: flex;
  align-items: center;
  gap: 0.55rem;
  text-decoration: none;
}

.wordmark .aperture {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--brand-grad);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: none;
}

.wordmark .aperture i {
  color: var(--bg);
  font-size: 0.85rem;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.9rem;
}

.tagline {
  color: var(--ink-faint);
  font-size: 0.82rem;
}

.theme-toggle {
  all: unset;
  width: 36px;
  height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  border: 1px solid var(--line);
  background: var(--surface-2);
  color: var(--ink-dim);
  cursor: pointer;
  transition: border-color .15s ease, color .15s ease;
}

.theme-toggle:hover {
  border-color: var(--violet);
  color: var(--ink);
}

/* ---------- Hero (home page) ---------- */
.hero {
  margin-bottom: 2.75rem;
}

.hero .eyebrow {
  color: var(--ink-faint);
  font-size: 0.78rem;
  margin-bottom: 0.85rem;
}

.hero h1 {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 600;
  font-size: clamp(1.9rem, 4.2vw, 2.7rem);
  line-height: 1.12;
  margin: 0 0 0.85rem;
  max-width: 16ch;
}

.hero p {
  color: var(--ink-dim);
  max-width: 52ch;
  line-height: 1.65;
  margin: 0 0 1.5rem;
}

.hero-progress {
  display: flex;
  align-items: center;
  gap: 0.9rem;
}

.progress-track {
  flex: 1;
  height: 6px;
  border-radius: 999px;
  background: var(--surface-3);
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  border-radius: 999px;
  background: var(--brand-grad);
}

.progress-label {
  font-size: 0.78rem;
  color: var(--ink-faint);
  white-space: nowrap;
}

/* ---------- Lineup grid (home page) ---------- */
.section-label {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1rem;
  font-weight: 600;
  margin: 0 0 1rem;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
}

.section-label span.count {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--ink-faint);
}

.lineup {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 1rem;
}

.game-card-tile {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  padding: 1.1rem;
  min-height: 168px;
  text-decoration: none;
  color: inherit;
  transition: border-color .18s ease, transform .18s ease, background-color .18s ease;
}

.game-card-tile .top-row {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
}

.game-card-tile .idx {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.7rem;
  color: var(--ink-faint);
}

.game-card-tile .icon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: var(--surface-3);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.15rem;
  color: var(--ink-dim);
}

.game-card-tile h3 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1rem;
  font-weight: 600;
  margin: 0;
}

.game-card-tile p {
  margin: 0;
  font-size: 0.8rem;
  color: var(--ink-faint);
  line-height: 1.45;
  flex: 1;
}

.badge-status {
  align-self: flex-start;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.68rem;
  padding: 0.3rem 0.6rem;
  border-radius: 999px;
  white-space: nowrap;
  border: 1px solid var(--line);
  color: var(--ink-faint);
}

.badge-status.next {
  color: var(--coral);
  border-color: rgba(255, 111, 89, 0.35);
}

.badge-status.available {
  background: var(--brand-grad);
  color: var(--bg);
  border-color: transparent;
  font-weight: 600;
}

.game-card-tile.is-playable {
  cursor: pointer;
}

.game-card-tile.is-playable:hover,
.game-card-tile.is-playable:focus-visible {
  border-color: var(--violet);
  transform: translateY(-3px);
}

.game-card-tile.is-playable .icon {
  color: var(--ink);
}

.game-card-tile.is-locked {
  opacity: 0.6;
}

.play-chip {
  position: absolute;
  top: 1.1rem;
  right: 1.1rem;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--surface-3);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--ink-dim);
  transition: background-color .18s ease, color .18s ease;
}

.game-card-tile.is-playable:hover .play-chip {
  background: var(--brand-grad);
  color: var(--bg);
}

/* ---------- Game page shell ---------- */
.back-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--ink-dim);
  text-decoration: none;
  font-size: 0.85rem;
  margin-bottom: 1.6rem;
  background: none;
  border: none;
  padding: 0;
  cursor: pointer;
  font-family: inherit;
}

.back-link:hover {
  color: var(--ink);
}

.game-card {
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  padding: 1.75rem;
}

.game-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 1.4rem;
}

.game-head h2 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.4rem;
  margin: 0;
  font-weight: 600;
}

.status-pill {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.8rem;
  padding: 0.35rem 0.75rem;
  border-radius: 999px;
  background: var(--surface-3);
  border: 1px solid var(--line);
  color: var(--ink-dim);
  white-space: nowrap;
}

.status-pill.win {
  background: var(--brand-grad);
  color: var(--bg);
  border-color: transparent;
  font-weight: 600;
}

.board-wrap {
  display: flex;
  justify-content: center;
  padding: 0.5rem 0 1.25rem;
}

.score-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.7rem;
  margin-bottom: 1.4rem;
}

.score-row.cols-2 {
  grid-template-columns: repeat(2, 1fr);
}

.score-box {
  background: var(--surface-1);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 0.65rem 0.5rem;
  text-align: center;
}

.score-box .label {
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  color: var(--ink-faint);
  margin-bottom: 0.3rem;
}

.score-box .value {
  font-family: 'JetBrains Mono', monospace;
  font-size: 1.35rem;
  font-weight: 600;
}

.score-box.x .value {
  color: var(--violet);
}

.score-box.o .value {
  color: var(--coral);
}

.score-box.d .value {
  color: var(--ink-dim);
}

.controls-row {
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
  align-items: center;
}

.btn-primary-grad {
  background: var(--brand-grad);
  border: none;
  color: var(--bg);
  font-weight: 600;
  border-radius: 999px;
  padding: 0.55rem 1.3rem;
  font-size: 0.9rem;
  transition: filter .15s ease, transform .15s ease;
  cursor: pointer;
}

.btn-primary-grad:hover {
  filter: brightness(1.08);
  transform: translateY(-1px);
  color: var(--bg);
}

.btn-ghost {
  background: transparent;
  border: 1px solid var(--line);
  color: var(--ink-dim);
  border-radius: 999px;
  padding: 0.55rem 1.3rem;
  font-size: 0.9rem;
  transition: border-color .15s ease, color .15s ease;
  cursor: pointer;
}

.btn-ghost:hover {
  border-color: var(--ink-faint);
  color: var(--ink);
}

.btn-ghost:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.hint-text {
  font-size: 0.76rem;
  color: var(--ink-faint);
  margin-top: 0.9rem;
  text-align: center;
}

/* segmented mode/difficulty toggle */
.mode-toggle {
  display: inline-flex;
  background: var(--surface-1);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 3px;
  gap: 2px;
}

.mode-toggle button {
  all: unset;
  font-family: 'Inter', sans-serif;
  font-size: 0.78rem;
  padding: 0.4rem 0.9rem;
  border-radius: 999px;
  color: var(--ink-faint);
  cursor: pointer;
}

.mode-toggle button.active {
  background: var(--surface-3);
  color: var(--ink);
}

/* D-pad (snake) */
.dpad {
  display: grid;
  grid-template-columns: repeat(3, 44px);
  grid-template-rows: repeat(2, 44px);
  gap: 6px;
  justify-content: center;
  margin-top: 1.4rem;
}

.dpad button {
  all: unset;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--surface-3);
  border: 1px solid var(--line);
  border-radius: 10px;
  color: var(--ink-dim);
  font-size: 1.1rem;
  cursor: pointer;
}

.dpad button:hover,
.dpad button:active {
  border-color: var(--violet);
  color: var(--ink);
}

.dpad .dp-up {
  grid-column: 2;
  grid-row: 1;
}

.dpad .dp-left {
  grid-column: 1;
  grid-row: 2;
}

.dpad .dp-down {
  grid-column: 2;
  grid-row: 2;
}

.dpad .dp-right {
  grid-column: 3;
  grid-row: 2;
}

/* Memory Match card grid */
.memory-grid {
  display: grid;
  gap: 0.6rem;
  max-width: 420px;
  margin: 0 auto;
}

.mcard {
  aspect-ratio: 1;
  perspective: 600px;
  cursor: pointer;
}

.mcard.is-matched {
  cursor: default;
}

.mcard-inner {
  position: relative;
  width: 100%;
  height: 100%;
  transform-style: preserve-3d;
  transition: transform .38s ease;
}

.mcard.is-flipped .mcard-inner,
.mcard.is-matched .mcard-inner {
  transform: rotateY(180deg);
}

.mcard-face {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 9px;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  border: 1px solid var(--line);
}

.mcard-back {
  background: var(--surface-3);
  color: var(--ink-faint);
  font-size: 1.1rem;
}

.mcard-back .aperture-sm {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--brand-grad);
  opacity: 0.55;
}

.mcard-front {
  background: var(--surface-1);
  transform: rotateY(180deg);
  font-size: 1.35rem;
  color: var(--violet);
}

.mcard.is-matched .mcard-front {
  color: var(--coral);
  box-shadow: inset 0 0 0 2px rgba(255, 111, 89, 0.45);
}

.mcard.is-matched {
  opacity: 0.72;
}

footer {
  margin-top: 3rem;
  color: var(--ink-faint);
  font-size: 0.75rem;
  text-align: center;
}

@media (max-width:520px) {
  .game-card {
    padding: 1.15rem;
  }

  .lineup {
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  }
}

/* ---------- Site footer (added) ---------- */
.site-footer {
  position: relative;
  background: var(--surface-1);
  border-top: 1px solid var(--line);
  color: var(--ink-dim);
  font-size: 0.85rem;
  margin-top: 1rem;
}

.site-footer::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--brand-grad);
  opacity: 0.85;
}

.site-footer .footer-inner {
  max-width: 980px;
  margin: 0 auto;
  padding: 2.75rem 1.25rem 1.5rem;
}

.site-footer .footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr;
  gap: 2.25rem;
  padding-bottom: 2rem;
}

.site-footer .footer-brand p {
  margin: 0.9rem 0 0;
  max-width: 36ch;
  line-height: 1.65;
  color: var(--ink-dim);
}

.site-footer .footer-heading {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink);
  margin: 0 0 1rem;
}

.site-footer ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.site-footer ul a {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--ink-dim);
  text-decoration: none;
  transition: color .15s ease, transform .15s ease;
}

.site-footer ul a:hover {
  color: var(--ink);
  transform: translateX(2px);
}

.site-footer ul a i {
  color: var(--ink-faint);
  transition: color .15s ease;
}

.site-footer ul a:hover i {
  color: var(--violet);
}

.site-footer .footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.75rem 1.5rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--line);
  font-size: 0.75rem;
  color: var(--ink-faint);
}

.site-footer .footer-bottom .made {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.site-footer .footer-bottom .made i {
  color: var(--coral);
}

@media (max-width:700px) {
  .site-footer .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 2rem 1.5rem;
  }

  .site-footer .footer-brand {
    grid-column: 1 / -1;
  }
}

@media (max-width:420px) {
  .site-footer .footer-grid {
    grid-template-columns: 1fr;
  }

  .site-footer .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }
}

/* ---------- Multi-page additions ---------- */
a.wordmark {
  text-decoration: none;
}

a.game-card-tile {
  text-decoration: none;
  color: inherit;
}

.info-section {
  margin-top: 3.25rem;
}

.info-title {
  font-family: 'Space Grotesk', sans-serif;
  font-size: clamp(1.3rem, 3vw, 1.65rem);
  font-weight: 600;
  line-height: 1.2;
  margin: 0 0 1.1rem;
}

.info-lead {
  color: var(--ink-dim);
  line-height: 1.75;
  max-width: 68ch;
  margin: 0 0 1rem;
}

.info-lead strong {
  color: var(--ink);
  font-weight: 600;
}

.fact-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.7rem;
  margin: 0 0 1.5rem;
}

.fact {
  background: var(--surface-1);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 0.8rem 0.5rem;
  text-align: center;
}

.fact .num {
  font-family: 'JetBrains Mono', monospace;
  font-size: 1.25rem;
  font-weight: 600;
  background: var(--brand-grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.fact .lbl {
  font-size: 0.72rem;
  color: var(--ink-faint);
  margin-top: 0.2rem;
}

.split {
  display: grid;
  grid-template-columns: 1.25fr 1fr;
  gap: 1.25rem;
  align-items: start;
}

.info-card {
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  padding: 1.35rem;
}

.info-card .icon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: var(--surface-3);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--violet);
  font-size: 1.1rem;
  margin-bottom: 0.9rem;
}

.info-card h3 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1rem;
  font-weight: 600;
  margin: 0 0 0.4rem;
}

.info-card p {
  margin: 0;
  font-size: 0.85rem;
  line-height: 1.65;
  color: var(--ink-dim);
}

.info-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
}

.how-steps {
  list-style: none;
  counter-reset: step;
  margin: 0 0 1.1rem;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.how-steps li {
  counter-increment: step;
  position: relative;
  padding-left: 2.4rem;
  font-size: 0.88rem;
  line-height: 1.6;
  color: var(--ink-dim);
}

.how-steps li strong {
  color: var(--ink);
  font-weight: 600;
}

.how-steps li::before {
  content: counter(step);
  position: absolute;
  left: 0;
  top: 0;
  width: 1.65rem;
  height: 1.65rem;
  border-radius: 50%;
  background: var(--brand-grad);
  color: var(--bg);
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
}

.tip-box {
  border-left: 3px solid var(--violet);
  background: var(--surface-1);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: 0.8rem 1rem;
  font-size: 0.83rem;
  line-height: 1.6;
  color: var(--ink-dim);
}

.tip-box strong {
  color: var(--ink);
}

.note-line {
  margin: 1rem 0 0;
  font-size: 0.82rem;
  color: var(--ink-faint);
}

.note-line i {
  color: var(--coral);
  margin-right: 0.35rem;
}

@media (max-width:760px) {
  .split {
    grid-template-columns: 1fr;
  }

  .fact-row {
    grid-template-columns: repeat(2, 1fr);
  }
}