:root {
  color-scheme: dark;
  --bg: #12232d;
  --bg-deep: #0c171e;
  --panel: rgba(10, 24, 31, 0.82);
  --panel-strong: rgba(8, 20, 27, 0.9);
  --ink: #f4f2ec;
  --muted: rgba(227, 233, 232, 0.74);
  --line: rgba(196, 237, 234, 0.16);
  --accent: #ff8e63;
  --accent-soft: rgba(255, 142, 99, 0.18);
  --mint: #7ce0d4;
  --gold: #f5ca6c;
  --danger: #ff6d83;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.3);
  --radius-xl: 32px;
  --radius-lg: 24px;
  --radius-md: 18px;
  --radius-sm: 14px;
  --safe-top: env(safe-area-inset-top, 0px);
  --safe-bottom: env(safe-area-inset-bottom, 0px);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  background:
    radial-gradient(circle at top left, rgba(124, 224, 212, 0.16), transparent 32%),
    radial-gradient(circle at 85% 14%, rgba(255, 142, 99, 0.16), transparent 28%),
    linear-gradient(180deg, #16303c 0%, var(--bg) 38%, var(--bg-deep) 100%);
  color: var(--ink);
  font-family: "Avenir Next", "Sora", "Trebuchet MS", sans-serif;
}

body {
  padding: max(20px, var(--safe-top)) 18px max(20px, calc(var(--safe-bottom) + 16px));
}

a {
  color: inherit;
}

button,
canvas {
  touch-action: manipulation;
}

.page-shell {
  width: min(1240px, 100%);
  margin: 0 auto;
}

.site-nav,
.hero,
.board-card,
.panel,
.game-footer {
  backdrop-filter: blur(18px);
  background: linear-gradient(180deg, rgba(17, 37, 47, 0.92), rgba(9, 18, 26, 0.92));
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.site-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 18px;
  border-radius: 999px;
  margin-bottom: 18px;
}

.site-brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.site-brand-mark {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background:
    radial-gradient(circle at 28% 28%, #fff6e6 0%, #fff6e6 18%, transparent 19%),
    linear-gradient(135deg, var(--accent), var(--gold) 58%, var(--mint));
  box-shadow: 0 0 0 5px rgba(255, 255, 255, 0.08);
}

.site-brand-label,
.site-brand-name {
  display: block;
}

.site-brand-label {
  font-size: 0.72rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.64);
}

.site-brand-name {
  font-size: 1rem;
  font-weight: 700;
}

.site-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 10px;
}

.site-links a,
.mini-link {
  border: 1px solid rgba(255, 255, 255, 0.09);
  border-radius: 999px;
  padding: 10px 14px;
  color: var(--muted);
  background: rgba(255, 255, 255, 0.03);
  text-decoration: none;
  font: inherit;
  transition:
    transform 140ms ease,
    border-color 140ms ease,
    color 140ms ease,
    background 140ms ease;
}

.site-links a:hover,
.mini-link:hover,
.mode-btn:hover,
.pad-btn:hover,
.level-chip:hover {
  transform: translateY(-1px);
  border-color: rgba(255, 255, 255, 0.22);
  color: var(--ink);
}

.mini-link {
  cursor: pointer;
}

.route-wrap {
  display: grid;
  gap: 18px;
}

.hero {
  padding: clamp(22px, 4vw, 34px);
  border-radius: var(--radius-xl);
  position: relative;
  overflow: hidden;
}

.hero::after {
  content: "";
  position: absolute;
  inset: auto auto -100px -100px;
  width: 280px;
  height: 280px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 142, 99, 0.26), transparent 66%);
  pointer-events: none;
}

.eyebrow,
.panel-label {
  margin: 0 0 10px;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  font-size: 0.74rem;
  color: rgba(255, 255, 255, 0.54);
}

.game-name,
.stage-title,
.panel-title {
  margin: 0;
  font-family: "Avenir Next Condensed", "Avenir Next", "Sora", sans-serif;
}

.game-name {
  font-size: clamp(2.8rem, 6vw, 4.9rem);
  line-height: 0.92;
  letter-spacing: -0.04em;
}

.intro-copy {
  width: min(62ch, 100%);
  margin: 18px 0 0;
  font-size: 1.03rem;
  line-height: 1.65;
  color: var(--muted);
}

.intro-copy-small {
  margin-top: 16px;
  font-size: 0.92rem;
}

.hero-chips,
.button-row,
.board-actions,
.site-links,
.game-footer-links {
  display: flex;
  flex-wrap: wrap;
}

.hero-chips {
  gap: 10px;
  margin-top: 20px;
}

.hero-chip,
.panel-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 14px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(255, 255, 255, 0.04);
  font-size: 0.92rem;
}

.hero-chip-accent {
  color: #fff1e6;
  background: linear-gradient(135deg, rgba(255, 142, 99, 0.24), rgba(245, 202, 108, 0.16));
  border-color: rgba(255, 175, 136, 0.45);
}

.panel {
  border-radius: var(--radius-lg);
}

.hero-panel {
  background: linear-gradient(180deg, rgba(11, 23, 30, 0.78), rgba(12, 20, 27, 0.92));
}

.hero-metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-bottom: 18px;
}

.metric-card,
.meta-item {
  padding: 14px 16px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.metric-label,
.meta-item dt {
  display: block;
  font-size: 0.76rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.5);
}

.metric-value,
.meta-item dd {
  margin: 8px 0 0;
  font-size: 1.1rem;
  font-weight: 700;
}

.meta-item dd {
  font-size: 1rem;
}

.mode-groups {
  display: grid;
  gap: 10px;
}

.button-row,
.board-actions {
  gap: 10px;
}

.mode-btn,
.pad-btn,
.level-chip {
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.05);
  color: var(--ink);
  font: inherit;
  padding: 12px 16px;
  cursor: pointer;
  transition:
    transform 140ms ease,
    border-color 140ms ease,
    background 140ms ease,
    opacity 140ms ease;
}

.mode-btn[aria-pressed="true"],
.level-chip[aria-current="true"] {
  background: linear-gradient(135deg, rgba(255, 142, 99, 0.34), rgba(245, 202, 108, 0.14));
  border-color: rgba(255, 187, 147, 0.65);
}

.mode-btn-strong {
  background: linear-gradient(135deg, rgba(255, 142, 99, 0.24), rgba(124, 224, 212, 0.16));
}

.stage-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.42fr) minmax(290px, 0.78fr);
  gap: 18px;
}

.utility-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.utility-panel {
  padding: 18px;
}

.utility-header {
  margin-bottom: 10px;
}

.utility-refresh {
  cursor: pointer;
}

.utility-copy {
  margin: 8px 0 0;
  color: var(--muted);
  line-height: 1.6;
}

.leaderboard-list {
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}

.leaderboard-item,
.leaderboard-empty {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 12px;
  align-items: center;
  padding: 12px 14px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.leaderboard-empty {
  grid-template-columns: 1fr;
  color: var(--muted);
}

.leaderboard-rank {
  font-size: 0.92rem;
  color: rgba(255, 255, 255, 0.6);
  font-weight: 700;
}

.leaderboard-copy {
  min-width: 0;
  display: grid;
}

.leaderboard-name,
.leaderboard-score {
  font-weight: 700;
}

.leaderboard-name {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.leaderboard-meta {
  font-size: 0.9rem;
  color: var(--muted);
}

.leaderboard-score {
  color: #fff1e6;
}

.board-card {
  padding: 18px;
  border-radius: var(--radius-xl);
}

.board-topline,
.panel-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 14px;
}

.stage-title {
  font-size: clamp(1.6rem, 4vw, 2.2rem);
}

.timer-pill {
  min-width: 144px;
  padding: 12px 14px;
  border-radius: 18px;
  background: linear-gradient(180deg, rgba(124, 224, 212, 0.12), rgba(255, 142, 99, 0.12));
  border: 1px solid rgba(255, 255, 255, 0.1);
  text-align: right;
}

.timer-pill-label {
  display: block;
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.5);
}

.timer-pill-value {
  display: block;
  margin-top: 4px;
  font-size: 1.2rem;
  font-weight: 800;
}

.canvas-shell {
  margin-top: 18px;
  border-radius: 28px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: radial-gradient(circle at top, rgba(124, 224, 212, 0.12), transparent 50%), #071015;
}

canvas {
  display: block;
  width: 100%;
  height: auto;
  max-width: 720px;
  margin: 0 auto;
  touch-action: none;
}

.status-shell {
  margin-top: 16px;
}

.status-text {
  margin: 0 0 10px;
  min-height: 1.5em;
  color: var(--muted);
}

.timer-bar {
  width: 100%;
  height: 10px;
  border-radius: 999px;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.08);
}

.timer-fill {
  display: block;
  width: 100%;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--mint), var(--gold), var(--accent), var(--danger));
  transform-origin: left center;
  transition: transform 160ms linear;
}

.board-actions {
  margin-top: 16px;
}

.side-stack {
  display: grid;
  gap: 16px;
  align-content: start;
}

.panel {
  padding: 18px;
}

.level-rail {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 10px;
}

.level-chip {
  justify-content: center;
  text-align: center;
}

.level-chip.is-locked {
  opacity: 0.38;
  cursor: not-allowed;
}

.helper-copy {
  margin: 0 0 16px;
  line-height: 1.6;
  color: var(--muted);
}

.helper-copy-tight {
  margin: 14px 0 12px;
  font-size: 0.95rem;
}

.dpad {
  display: grid;
  justify-items: center;
  gap: 10px;
}

.dpad-row {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 80px));
  gap: 10px;
}

.pad-btn {
  min-width: 84px;
}

.pad-btn-up {
  min-width: 104px;
}

.rule-list {
  margin: 0;
  padding-left: 18px;
  color: var(--muted);
  line-height: 1.7;
}

.panel-footnote {
  margin: 12px 0 0;
  color: var(--muted);
  line-height: 1.6;
  font-size: 0.95rem;
}

.meta-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin: 0;
}

.game-footer {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 18px 20px;
  border-radius: var(--radius-xl);
}

.game-footer-copy {
  color: rgba(255, 255, 255, 0.56);
}

.game-footer-links {
  gap: 10px;
}

.game-footer-links a {
  padding: 10px 14px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(255, 255, 255, 0.03);
  text-decoration: none;
}

.is-urgent .timer-pill,
.is-urgent .metric-card:first-child {
  animation: pulse-alert 880ms ease-in-out infinite alternate;
}

@keyframes pulse-alert {
  from {
    box-shadow: 0 0 0 0 rgba(255, 109, 131, 0.1);
    transform: translateY(0);
  }
  to {
    box-shadow: 0 0 0 10px rgba(255, 109, 131, 0.03);
    transform: translateY(-1px);
  }
}

@media (max-width: 980px) {
  .stage-grid {
    grid-template-columns: 1fr;
  }

  .utility-grid {
    grid-template-columns: 1fr;
  }

  .site-nav {
    border-radius: 28px;
    align-items: flex-start;
  }
}

@media (max-width: 720px) {
  body {
    padding-left: 12px;
    padding-right: 12px;
  }

  .site-nav {
    padding: 14px;
  }

  .site-links {
    justify-content: flex-start;
  }

  .hero,
  .board-card,
  .panel,
  .game-footer {
    border-radius: 24px;
  }

  .hero {
    padding: 18px;
  }

  .hero-metrics,
  .meta-grid {
    grid-template-columns: 1fr 1fr;
  }

  .level-rail {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (max-width: 520px) {
  .site-brand-label {
    display: none;
  }

  .site-links a,
  .mini-link,
  .mode-btn,
  .pad-btn,
  .level-chip,
  .game-footer-links a {
    padding: 10px 12px;
    font-size: 0.94rem;
  }

  .hero-metrics,
  .meta-grid {
    grid-template-columns: 1fr;
  }

  .dpad-row {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    width: 100%;
  }

  .pad-btn,
  .pad-btn-up {
    width: 100%;
    min-width: 0;
  }

  .level-rail {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .board-actions {
    flex-direction: column;
  }

  .leaderboard-item {
    grid-template-columns: auto 1fr;
  }

  .leaderboard-score {
    grid-column: 2;
    justify-self: end;
  }
}

@media (display-mode: standalone) {
  body {
    padding-top: max(12px, var(--safe-top));
  }

  .site-links [data-install-button] {
    display: none;
  }
}