:root {
  --bg: #08101f;
  --bg-soft: #101a31;
  --panel: rgba(11, 18, 35, 0.86);
  --panel-strong: rgba(17, 27, 48, 0.95);
  --panel-border: rgba(255, 255, 255, 0.08);
  --text: #ecf3ff;
  --muted: #9eb0d0;
  --primary: #8b5cf6;
  --primary-strong: #7c3aed;
  --primary-soft: rgba(139, 92, 246, 0.18);
  --success: #22c55e;
  --danger: #f97316;
  --warning: #fbbf24;
  --accent: #22d3ee;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.35);
  --radius-xl: 28px;
  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 10px;
  --container: 1180px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  color-scheme: dark;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Inter", system-ui, sans-serif;
  background:
    radial-gradient(circle at top left, rgba(34, 211, 238, 0.12), transparent 26%),
    radial-gradient(circle at top right, rgba(139, 92, 246, 0.22), transparent 28%),
    linear-gradient(180deg, #060b16 0%, #0c1630 44%, #070d1c 100%);
  color: var(--text);
}

button,
input {
  font: inherit;
}

button {
  cursor: pointer;
}

input {
  border: 1px solid var(--panel-border);
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
}

input::placeholder {
  color: rgba(236, 243, 255, 0.42);
}

.app-shell {
  width: min(100%, var(--container));
  margin: 0 auto;
  padding: 1rem 1rem 3rem;
}

.topbar {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.25rem 0 1.25rem;
}

.eyebrow {
  margin: 0 0 0.35rem;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.74rem;
  font-weight: 700;
}

h1,
h2,
h3,
h4,
p {
  margin: 0;
}

h1 {
  font-size: clamp(2rem, 6vw, 3.7rem);
  line-height: 0.95;
}

h2 {
  font-size: clamp(1.35rem, 4vw, 2rem);
}

.app {
  display: grid;
  gap: 1rem;
}

.layout-grid,
.home-grid,
.game-layout,
.rules-grid {
  display: grid;
  gap: 1rem;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius-xl);
  padding: 1rem;
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}

.subtle-panel {
  background: rgba(255, 255, 255, 0.03);
}

.hero-panel {
  padding: 1.4rem;
}

.hero-copy {
  display: grid;
  gap: 0.85rem;
}

.hero-copy p,
.panel-copy,
.meta-text {
  color: var(--muted);
  line-height: 1.6;
}

.action-stack,
.stack-list,
.info-stack,
.player-column,
.round-summary,
.status-stack {
  display: grid;
  gap: 0.75rem;
}

.stack-list {
  padding-left: 1rem;
  color: var(--muted);
}

.hero-actions,
.button-row,
.player-row,
.input-row,
.score-badges,
.chip-row,
.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.primary-button,
.secondary-button,
.ghost-button,
.danger-button,
.icon-button {
  border: none;
  border-radius: 999px;
  padding: 0.95rem 1.2rem;
  font-weight: 700;
  transition:
    transform 140ms ease,
    background 140ms ease,
    opacity 140ms ease,
    box-shadow 140ms ease;
}

.primary-button {
  background: linear-gradient(135deg, var(--primary) 0%, #5b8cff 100%);
  color: #fff;
  box-shadow: 0 18px 40px rgba(91, 140, 255, 0.28);
}

.secondary-button {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text);
}

.ghost-button {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--panel-border);
}

.danger-button {
  background: rgba(249, 115, 22, 0.16);
  color: #ffd9c4;
  border: 1px solid rgba(249, 115, 22, 0.2);
}

.icon-button {
  min-width: 44px;
  padding-inline: 1rem;
  background: rgba(255, 255, 255, 0.08);
  color: var(--text);
}

.primary-button:hover,
.secondary-button:hover,
.ghost-button:hover,
.danger-button:hover,
.icon-button:hover {
  transform: translateY(-1px);
}

.primary-button:disabled,
.secondary-button:disabled,
.ghost-button:disabled,
.danger-button:disabled,
.icon-button:disabled {
  opacity: 0.52;
  cursor: not-allowed;
  transform: none;
}

.field-group {
  display: grid;
  gap: 0.85rem;
}

.player-name-group {
  margin-top: 0.85rem;
}

.field-group + .hero-actions,
.field-group + .button-row,
.field-group + .cta-row {
  margin-top: 0.5rem;
}

.field-label {
  font-size: 0.9rem;
  color: var(--muted);
  font-weight: 600;
}

.text-input {
  min-height: 54px;
  border-radius: var(--radius-md);
  padding: 0.9rem 1rem;
  width: 100%;
}

.text-input:disabled {
  opacity: 0.72;
  cursor: not-allowed;
}

.text-input:focus-visible,
.primary-button:focus-visible,
.secondary-button:focus-visible,
.ghost-button:focus-visible,
.danger-button:focus-visible,
.icon-button:focus-visible {
  outline: 2px solid rgba(34, 211, 238, 0.6);
  outline-offset: 2px;
}

.chip {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  min-height: 32px;
  padding: 0.35rem 0.75rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
  color: var(--text);
  font-size: 0.84rem;
  font-weight: 600;
}

.chip-primary {
  background: var(--primary-soft);
  color: #ddd1ff;
}

.chip-success {
  background: rgba(34, 197, 94, 0.14);
  color: #baf7ce;
}

.chip-warning {
  background: rgba(251, 191, 36, 0.14);
  color: #ffe4a4;
}

.chip-danger {
  background: rgba(249, 115, 22, 0.14);
  color: #ffcaa9;
}

.chip-accent {
  background: rgba(34, 211, 238, 0.14);
  color: #a9f2ff;
}

.hero-stats,
.score-grid,
.scoreboard-grid,
.duel-players,
.settings-grid,
.summary-grid {
  display: grid;
  gap: 0.75rem;
}

.stat-card,
.score-card,
.summary-card,
.player-card,
.mini-card {
  border-radius: var(--radius-lg);
  border: 1px solid var(--panel-border);
  background: rgba(255, 255, 255, 0.035);
  padding: 0.95rem;
}

.stat-card strong,
.score-card strong,
.summary-card strong,
.player-card strong {
  display: block;
  font-size: 1.25rem;
  margin-top: 0.35rem;
}

.score-card.active,
.player-card.active {
  border-color: rgba(34, 211, 238, 0.35);
  box-shadow: inset 0 0 0 1px rgba(34, 211, 238, 0.12);
}

.puzzle-panel {
  display: grid;
  gap: 1rem;
  padding: 1rem;
}

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

.timer-bar {
  height: 100%;
  width: 100%;
  background: linear-gradient(90deg, #22d3ee 0%, #8b5cf6 45%, #f97316 100%);
  transform-origin: left center;
}

.puzzle-card {
  border-radius: var(--radius-xl);
  background:
    linear-gradient(160deg, rgba(139, 92, 246, 0.16), rgba(34, 211, 238, 0.1)),
    rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.09);
  padding: 1rem;
  display: grid;
  gap: 1rem;
}

.anagram {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
}

.anagram-letter {
  width: clamp(44px, 10vw, 58px);
  height: clamp(44px, 10vw, 58px);
  border-radius: 18px;
  display: grid;
  place-items: center;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.08);
  font-size: clamp(1.1rem, 4vw, 1.5rem);
  font-weight: 800;
  text-transform: uppercase;
}

.answer-form {
  display: grid;
  gap: 1rem;
}

.answer-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 1rem;
}

.feedback {
  min-height: 22px;
  font-size: 0.92rem;
  font-weight: 600;
}

.feedback-success {
  color: #92f0ac;
}

.feedback-danger {
  color: #ffc3a7;
}

.feedback-warning {
  color: #ffe2a0;
}

.feedback-muted {
  color: var(--muted);
}

.versus-card {
  display: grid;
  gap: 0.85rem;
}

.player-strip {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.player-strip strong {
  font-size: 1.05rem;
}

.tiny-label {
  display: block;
  color: var(--muted);
  font-size: 0.78rem;
  margin-bottom: 0.3rem;
}

.round-pillars {
  display: grid;
  gap: 0.75rem;
}

.round-pillar {
  border-radius: var(--radius-lg);
  padding: 0.85rem 0.95rem;
  background: rgba(255, 255, 255, 0.035);
  border: 1px solid rgba(255, 255, 255, 0.07);
}

.round-pillar.active {
  border-color: rgba(34, 211, 238, 0.44);
  box-shadow: inset 0 0 0 1px rgba(34, 211, 238, 0.12);
}

.banner {
  border-radius: var(--radius-lg);
  padding: 1rem;
  background: linear-gradient(135deg, rgba(139, 92, 246, 0.16), rgba(34, 211, 238, 0.12));
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.empty-state {
  display: grid;
  gap: 0.75rem;
  justify-items: start;
}

.code-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.85rem 1rem;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.09);
}

.code-badge strong {
  letter-spacing: 0.12em;
  font-size: 1.2rem;
}

.modal {
  width: min(720px, calc(100% - 2rem));
  border: none;
  padding: 0;
  border-radius: var(--radius-xl);
  background: transparent;
  color: var(--text);
}

.modal::backdrop {
  background: rgba(3, 6, 12, 0.72);
}

.modal-panel {
  padding: 1rem;
  border-radius: var(--radius-xl);
  background: rgba(7, 12, 24, 0.96);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.modal-header {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: flex-start;
  margin-bottom: 1rem;
}

.overlay {
  position: fixed;
  inset: 0;
  padding: 1rem;
  display: grid;
  place-items: center;
  background: rgba(4, 7, 14, 0.64);
  backdrop-filter: blur(6px);
  z-index: 20;
}

.overlay-card {
  width: min(100%, 540px);
  border-radius: var(--radius-xl);
  padding: 1.15rem;
  background: rgba(8, 14, 28, 0.96);
  border: 1px solid rgba(255, 255, 255, 0.1);
  display: grid;
  gap: 1rem;
  box-shadow: var(--shadow);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

@media (min-width: 760px) {
  .app-shell {
    padding: 1.25rem 1.25rem 3.5rem;
  }

  .home-grid,
  .game-layout {
    grid-template-columns: 1.15fr 0.85fr;
    align-items: start;
  }

  .hero-stats,
  .score-grid,
  .scoreboard-grid,
  .duel-players,
  .summary-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .rules-grid,
  .settings-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

@media (min-width: 1024px) {
  .panel,
  .hero-panel,
  .puzzle-panel,
  .modal-panel {
    padding: 1.35rem;
  }

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