:root {
  color-scheme: light;
  --bg: #f3f0ea;
  --bg-strong: #e8e1d7;
  --panel: rgba(255, 252, 247, 0.9);
  --panel-solid: #fffaf2;
  --ink: #1d252c;
  --muted: #64707d;
  --accent: #275a53;
  --accent-strong: #173d38;
  --accent-soft: #d7ebe6;
  --gold: #bf8736;
  --danger: #ad3434;
  --line: rgba(29, 37, 44, 0.13);
  --shadow: 0 24px 70px rgba(29, 37, 44, 0.13);
  --radius-xl: 28px;
  --radius-lg: 20px;
  --radius-md: 14px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  margin: 0;
  font-family: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at top left, rgba(191, 135, 54, 0.2), transparent 35rem),
    radial-gradient(circle at 80% 10%, rgba(39, 90, 83, 0.17), transparent 30rem),
    linear-gradient(135deg, #fbf7f0 0%, var(--bg) 48%, #ebe3d9 100%);
}

button,
input,
select,
textarea {
  font: inherit;
}

a {
  color: inherit;
  text-decoration: none;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding: 1rem clamp(1rem, 4vw, 4rem);
  background: rgba(251, 247, 240, 0.82);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(18px);
}

.brand,
.top-nav,
.language-switch,
.hero-actions,
.join-row,
.board-header,
.bingo-word {
  display: flex;
  align-items: center;
}

.brand {
  gap: 0.8rem;
}

.brand-mark {
  display: grid;
  width: 2.7rem;
  height: 2.7rem;
  place-items: center;
  color: white;
  font-weight: 800;
  background: linear-gradient(145deg, var(--accent), var(--accent-strong));
  border-radius: 0.9rem;
  box-shadow: 0 12px 26px rgba(39, 90, 83, 0.22);
}

.brand small {
  display: block;
  margin-top: 0.12rem;
  color: var(--muted);
  font-size: 0.78rem;
}

.top-nav {
  gap: 1rem;
  color: var(--muted);
  font-weight: 700;
}

.top-nav a {
  transition: color 160ms ease;
}

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

.language-switch {
  gap: 0.25rem;
  padding: 0.25rem;
  background: var(--panel-solid);
  border: 1px solid var(--line);
  border-radius: 999px;
}

.lang-button {
  padding: 0.45rem 0.7rem;
  color: var(--muted);
  font-weight: 800;
  background: transparent;
  border: 0;
  border-radius: 999px;
  cursor: pointer;
}

.lang-button.active {
  color: white;
  background: var(--accent);
}

.auth-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem 0.75rem;
  padding-left: 0.75rem;
  margin-left: 0.25rem;
  border-left: 1px solid var(--line);
}

.auth-anonymous,
.auth-user {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.35rem 0.6rem;
}

.auth-hint {
  max-width: 15rem;
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--muted);
  line-height: 1.35;
}

.auth-link.button {
  padding: 0.35rem 0.65rem;
  font-size: 0.78rem;
}

main {
  width: min(1180px, calc(100% - 2rem));
  margin: 0 auto;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(320px, 0.8fr);
  gap: clamp(2rem, 5vw, 5rem);
  align-items: center;
  min-height: 70vh;
  padding: clamp(3rem, 8vw, 6rem) 0;
}

.eyebrow {
  margin: 0 0 0.85rem;
  color: var(--gold);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 12ch;
  margin-bottom: 1.2rem;
  font-size: clamp(3rem, 7vw, 5.9rem);
  line-height: 0.92;
  letter-spacing: -0.075em;
}

h2 {
  margin-bottom: 0;
  font-size: clamp(1.7rem, 4vw, 2.6rem);
  letter-spacing: -0.04em;
}

h3 {
  margin-bottom: 0.6rem;
}

.hero-text {
  max-width: 62ch;
  color: var(--muted);
  font-size: 1.1rem;
  line-height: 1.7;
}

.hero-actions {
  flex-wrap: wrap;
  gap: 0.85rem;
  margin-top: 2rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3rem;
  padding: 0.8rem 1.15rem;
  font-weight: 800;
  border: 1px solid transparent;
  border-radius: 999px;
  cursor: pointer;
  transition:
    transform 160ms ease,
    box-shadow 160ms ease,
    background 160ms ease;
}

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

.button.primary {
  color: white;
  background: linear-gradient(145deg, var(--accent), var(--accent-strong));
  box-shadow: 0 18px 35px rgba(39, 90, 83, 0.22);
}

.button.secondary {
  color: var(--accent-strong);
  background: var(--accent-soft);
  border-color: rgba(39, 90, 83, 0.16);
}

.button.ghost {
  color: var(--accent-strong);
  background: rgba(255, 250, 242, 0.72);
  border-color: var(--line);
}

.button.full {
  width: 100%;
}

.hero-card,
.panel {
  background: var(--panel);
  border: 1px solid rgba(255, 255, 255, 0.7);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}

.hero-card {
  padding: clamp(1rem, 4vw, 2rem);
  border-radius: var(--radius-xl);
  transform: rotate(2deg);
}

.mini-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.7rem;
}

.mini-grid span {
  display: grid;
  min-height: 6.5rem;
  place-items: center;
  padding: 0.75rem;
  color: var(--accent-strong);
  font-weight: 800;
  text-align: center;
  background: linear-gradient(145deg, white, #f4ece0);
  border: 1px solid var(--line);
  border-radius: 18px;
}

.mini-grid .free {
  color: white;
  background: linear-gradient(145deg, var(--gold), #9b6424);
}

.game-shell {
  display: grid;
  grid-template-columns: minmax(280px, 380px) minmax(0, 1fr);
  gap: 1.25rem;
  align-items: start;
  padding: 2rem 0 5rem;
}

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

.settings-panel,
.board-panel {
  padding: clamp(1.1rem, 3vw, 1.6rem);
}

.settings-panel {
  position: sticky;
  top: 6rem;
}

.settings-form,
fieldset,
.field {
  display: grid;
  gap: 0.9rem;
}

.multi-options {
  display: none;
  gap: 0.9rem;
}

.multi-options.is-open {
  display: grid !important;
}

fieldset {
  min-width: 0;
  margin: 0;
  padding: 0;
  border: 0;
}

legend,
.field span {
  margin-bottom: 0.1rem;
  color: var(--ink);
  font-weight: 800;
}

.radio-card {
  display: flex;
  gap: 0.7rem;
  align-items: flex-start;
  padding: 0.85rem;
  background: rgba(255, 255, 255, 0.55);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  cursor: pointer;
}

.radio-card input {
  margin-top: 0.25rem;
  accent-color: var(--accent);
}

.radio-card small {
  display: block;
  margin-top: 0.2rem;
  color: var(--muted);
  line-height: 1.4;
}

input,
select,
textarea {
  width: 100%;
  color: var(--ink);
  background: rgba(255, 255, 255, 0.78);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  outline: 0;
}

input,
select {
  height: 3rem;
  padding: 0 0.85rem;
}

textarea {
  resize: vertical;
  padding: 0.85rem;
}

input:focus,
select:focus,
textarea:focus {
  border-color: rgba(39, 90, 83, 0.5);
  box-shadow: 0 0 0 4px rgba(39, 90, 83, 0.1);
}

.join-row {
  gap: 0.5rem;
}

.room-status {
  min-height: 1.4rem;
  margin: 0;
  color: var(--accent-strong);
  font-weight: 800;
}

.host-callout {
  margin: 0;
  padding: 0.85rem 1rem;
  color: var(--accent-strong);
  font-weight: 700;
  line-height: 1.45;
  background: var(--accent-soft);
  border: 1px solid rgba(39, 90, 83, 0.28);
  border-radius: var(--radius-md);
}

.room-roster {
  gap: 0.35rem;
  padding: 0.85rem 1rem;
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
}

.room-roster:not([hidden]) {
  display: grid;
}

.room-roster .eyebrow {
  margin: 0;
}

.room-roster-title {
  margin: 0 0 0.35rem;
  font-size: 0.95rem;
  font-weight: 800;
  color: var(--ink);
}

.room-roster-list {
  margin: 0;
  padding-left: 1.15rem;
  color: var(--accent-strong);
  font-weight: 700;
  line-height: 1.45;
}

.room-roster-list li {
  margin: 0.15rem 0;
}

.room-roster-empty {
  margin: 0;
  font-size: 0.88rem;
  color: var(--muted);
  font-weight: 600;
}

.join-room-block[hidden] {
  display: none !important;
}

.player-name-row {
  display: none;
  gap: 0.9rem;
}

.player-name-row.is-open {
  display: grid !important;
}

.player-name-row .field {
  margin-bottom: 0;
  padding: 0.85rem 1rem;
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid rgba(39, 90, 83, 0.22);
  border-radius: var(--radius-md);
}

.form-error {
  min-height: 1.25rem;
  margin: 0;
  color: var(--danger);
  font-weight: 700;
}

.board-header {
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.2rem;
}

.score-card {
  min-width: 8.5rem;
  padding: 0.8rem 1rem;
  text-align: right;
  background: rgba(255, 255, 255, 0.62);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
}

.score-card span {
  display: block;
  margin-bottom: 0.25rem;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 800;
  text-transform: uppercase;
}

.score-card strong {
  font-size: 1.45rem;
}

.bingo-word {
  justify-content: stretch;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
}

.bingo-word span {
  flex: 1;
  color: var(--accent-strong);
  font-size: clamp(1.4rem, 3vw, 2rem);
  font-weight: 900;
  text-align: center;
}

.board-play-area {
  position: relative;
}

.winner-overlay {
  position: absolute;
  inset: 0;
  z-index: 8;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  background: rgba(29, 37, 44, 0.62);
  backdrop-filter: blur(6px);
  border-radius: var(--radius-lg);
}

.winner-overlay-inner {
  max-width: min(100%, 28rem);
  padding: clamp(1.5rem, 4vw, 2.5rem) clamp(1.25rem, 4vw, 2rem);
  text-align: center;
  color: #fff;
  background: linear-gradient(155deg, var(--gold), #8a5218);
  border-radius: var(--radius-xl);
  box-shadow: 0 28px 60px rgba(29, 37, 44, 0.35);
}

.winner-overlay-title {
  margin: 0 0 0.5rem;
  font-size: clamp(2.4rem, 8vw, 4.2rem);
  font-weight: 900;
  letter-spacing: 0.04em;
  line-height: 1.05;
  text-transform: uppercase;
}

.winner-overlay-name {
  margin: 0 0 0.75rem;
  font-size: clamp(1.15rem, 3.5vw, 1.65rem);
  font-weight: 800;
  line-height: 1.35;
}

.winner-overlay-sub {
  margin: 0;
  font-size: clamp(0.95rem, 2.4vw, 1.1rem);
  font-weight: 600;
  opacity: 0.95;
}

.bingo-board {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0.55rem;
}

.cell {
  position: relative;
  display: grid;
  min-height: clamp(5.2rem, 10vw, 7.6rem);
  place-items: center;
  padding: 0.65rem;
  overflow: hidden;
  color: var(--ink);
  font-weight: 800;
  line-height: 1.18;
  text-align: center;
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.92), rgba(247, 239, 226, 0.95));
  border: 1px solid var(--line);
  border-radius: clamp(0.7rem, 2vw, 1.1rem);
  cursor: pointer;
}

.cell:hover {
  border-color: rgba(39, 90, 83, 0.38);
}

.cell.marked {
  color: white;
  background: linear-gradient(145deg, var(--accent), var(--accent-strong));
  border-color: transparent;
}

.cell.marked::after {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  color: rgba(255, 255, 255, 0.92);
  content: "X";
  font-size: clamp(2.8rem, 8vw, 5.2rem);
  font-weight: 900;
  line-height: 1;
}

.cell.marked span {
  opacity: 0.22;
}

.cell.free {
  color: white;
  background: linear-gradient(145deg, var(--gold), #996225);
}

.cell.winning {
  outline: 4px solid rgba(191, 135, 54, 0.55);
  outline-offset: 2px;
}

.winner-banner {
  display: flex;
  gap: 0.65rem;
  align-items: center;
  margin-top: 1rem;
  padding: 1rem;
  color: #fff;
  background: linear-gradient(145deg, var(--gold), #995f20);
  border-radius: var(--radius-md);
  box-shadow: 0 18px 34px rgba(191, 135, 54, 0.22);
}

.winner-banner[hidden],
[hidden] {
  display: none !important;
}

.site-version-footer {
  padding: 1rem clamp(1rem, 4vw, 4rem) 2rem;
  text-align: center;
  color: var(--muted);
  font-size: 0.8rem;
  letter-spacing: 0.02em;
  border-top: 1px solid var(--line);
  background: rgba(251, 247, 240, 0.55);
}

.site-version-footer small {
  font-size: inherit;
}

.site-version-footer .deploy-version {
  color: var(--accent-strong);
  font-weight: 800;
  font-variant-numeric: tabular-nums;
}

.how-it-works {
  padding: 1rem 0 5rem;
}

.centered {
  max-width: 650px;
  margin: 0 auto 1.4rem;
  text-align: center;
}

.rules-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

.rules-grid article {
  padding: 1.3rem;
  background: rgba(255, 250, 242, 0.74);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
}

.rules-grid span {
  display: grid;
  width: 2.4rem;
  height: 2.4rem;
  place-items: center;
  margin-bottom: 1rem;
  color: white;
  font-weight: 900;
  background: var(--accent);
  border-radius: 50%;
}

.rules-grid p {
  margin-bottom: 0;
  color: var(--muted);
  line-height: 1.6;
}

@media (max-width: 920px) {
  .hero,
  .game-shell,
  .rules-grid {
    grid-template-columns: 1fr;
  }

  .settings-panel {
    position: static;
  }
}

@media (max-width: 720px) {
  .site-header,
  .top-nav {
    align-items: flex-start;
  }

  .site-header {
    position: static;
    flex-direction: column;
  }

  .top-nav {
    width: 100%;
    flex-wrap: wrap;
  }

  .language-switch {
    margin-left: auto;
  }

  .auth-bar {
    width: 100%;
    margin-left: 0;
    padding-left: 0;
    padding-top: 0.5rem;
    border-left: 0;
    border-top: 1px solid var(--line);
  }

  .hero {
    min-height: auto;
  }

  .board-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .score-card {
    width: 100%;
    text-align: left;
  }

  .bingo-board {
    gap: 0.35rem;
  }

  .cell {
    min-height: 4.6rem;
    padding: 0.35rem;
    font-size: clamp(0.62rem, 2.5vw, 0.9rem);
    border-radius: 0.65rem;
  }
}