:root {
  --bg-top: #040404;
  --bg-bottom: #101314;
  --surface: rgba(16, 17, 18, 0.9);
  --surface-strong: #141516;
  --surface-tint: rgba(255, 255, 255, 0.04);
  --text-main: #f4f1e8;
  --text-soft: #a4aea8;
  --border-soft: rgba(255, 255, 255, 0.1);
  --accent: #ff7a2f;
  --accent-dark: #ffb16e;
  --accent-muted: rgba(255, 122, 47, 0.14);
  --field: #169765;
  --field-soft: rgba(22, 151, 101, 0.14);
  --shadow: 0 28px 70px rgba(0, 0, 0, 0.34);
  --radius-lg: 28px;
  --radius-md: 18px;
  --radius-sm: 12px;
  --content-width: min(1120px, calc(100vw - 40px));
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  position: relative;
  margin: 0;
  min-height: 100vh;
  font-family: "Trebuchet MS", "Lucida Sans Unicode", sans-serif;
  color: var(--text-main);
  background:
    radial-gradient(circle at top left, rgba(255, 122, 47, 0.12), transparent 28%),
    radial-gradient(circle at bottom right, rgba(22, 151, 101, 0.12), transparent 24%),
    linear-gradient(180deg, var(--bg-top), var(--bg-bottom));
  overflow-x: hidden;
}

body::before {
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.05) 1px, transparent 1px);
  background-size: 48px 48px;
  content: "";
  opacity: 0.6;
  pointer-events: none;
}

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

button {
  font: inherit;
}

.page-glow {
  position: fixed;
  z-index: 0;
  width: 420px;
  height: 420px;
  border-radius: 50%;
  filter: blur(24px);
  opacity: 0.5;
  pointer-events: none;
}

.page-glow-left {
  top: -120px;
  left: -120px;
  background: rgba(255, 122, 47, 0.16);
}

.page-glow-right {
  right: -140px;
  bottom: -120px;
  background: rgba(22, 151, 101, 0.16);
}

.site-header,
.page-main,
.site-footer {
  position: relative;
  z-index: 1;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  width: var(--content-width);
  margin: 0 auto;
  padding: 28px 0 12px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  border-radius: 16px;
  background: linear-gradient(135deg, var(--field), #1b875f);
  color: #fff8ef;
  font-weight: 700;
  letter-spacing: 0.08em;
  box-shadow: 0 12px 24px rgba(15, 98, 68, 0.2);
}

.brand-copy {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.brand-copy strong {
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.1rem;
}

.brand-copy span {
  color: var(--text-soft);
  font-size: 0.92rem;
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.nav-link {
  padding: 10px 16px;
  border: 1px solid transparent;
  border-radius: 999px;
  color: var(--text-soft);
  transition: 180ms ease;
}

.nav-link:hover,
.nav-link:focus-visible {
  border-color: var(--border-soft);
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-main);
  outline: none;
}

.nav-link.active {
  background: var(--field);
  color: #fdf8ef;
  box-shadow: 0 10px 24px rgba(15, 98, 68, 0.22);
}

.page-main {
  width: var(--content-width);
  margin: 0 auto;
  padding: 26px 0 60px;
}

.page-main-tight {
  padding-top: 10px;
}

.hero-grid,
.game-layout,
.rules-layout,
.split-panel {
  display: grid;
  gap: 24px;
}

.hero-grid {
  grid-template-columns: minmax(0, 1.35fr) minmax(320px, 0.95fr);
  align-items: stretch;
}

.hero-copy,
.hero-panel,
.section-block,
.game-panel,
.info-card,
.rules-panel,
.cta-panel {
  background: var(--surface);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  backdrop-filter: blur(10px);
}

.hero-copy,
.hero-panel,
.game-panel,
.info-card,
.rules-panel,
.cta-panel {
  padding: 30px;
}

.eyebrow,
.panel-kicker {
  margin: 0 0 12px;
  color: var(--accent-dark);
  font-size: 0.84rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  margin: 0;
  font-family: Georgia, "Times New Roman", serif;
  line-height: 1.08;
}

h1 {
  font-size: clamp(2.8rem, 5.6vw, 4.8rem);
  max-width: 11ch;
}

h2 {
  font-size: clamp(2rem, 3vw, 2.8rem);
}

h3 {
  font-size: 1.45rem;
}

.hero-text,
.feature-card p,
.timeline-step p,
.cta-panel p,
.rules-panel p,
.rules-steps,
.info-list,
.result-detail,
.move-copy,
.score-meta,
.brand-copy span,
.stat-label,
.rule-pills span {
  color: var(--text-soft);
  line-height: 1.7;
}

.hero-text {
  margin: 18px 0 0;
  max-width: 62ch;
  font-size: 1.05rem;
}

.hero-actions,
.action-row {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 28px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 12px 20px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-weight: 700;
  transition: transform 180ms ease, box-shadow 180ms ease, background 180ms ease, border-color 180ms ease;
  cursor: pointer;
}

.button:hover,
.button:focus-visible,
.choice-button:hover,
.choice-button:focus-visible {
  transform: translateY(-2px);
  outline: none;
}

.button-primary {
  background: linear-gradient(135deg, var(--accent), #ee8b3f);
  color: #fffaf3;
  box-shadow: 0 14px 26px rgba(217, 101, 43, 0.24);
}

.button-secondary {
  background: linear-gradient(135deg, var(--field), #238a63);
  color: #f7fff7;
  box-shadow: 0 14px 26px rgba(15, 98, 68, 0.2);
}

.button-ghost {
  border-color: var(--border-soft);
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-main);
}

.stat-row,
.feature-grid,
.score-grid,
.choice-grid {
  display: grid;
  gap: 16px;
}

.stat-row {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-top: 30px;
}

.stat-card,
.feature-card,
.score-card {
  border-radius: var(--radius-md);
  border: 1px solid var(--border-soft);
  background: rgba(255, 255, 255, 0.04);
}

.stat-card {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 18px;
}

.stat-value {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--field);
}

.preview-orbit {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  margin: 18px 0 22px;
  padding: 18px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, rgba(22, 151, 101, 0.12), rgba(255, 122, 47, 0.12));
}

.preview-orbit span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 76px;
  height: 76px;
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.07);
  font-size: 2rem;
}

.rule-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 20px;
}

.rule-pills span {
  padding: 10px 14px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-soft);
  font-size: 0.95rem;
}

.section-block {
  margin-top: 26px;
  padding: 28px;
}

.section-heading {
  max-width: 54rem;
}

.compact-heading {
  margin-bottom: 8px;
}

.feature-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-top: 24px;
}

.feature-card {
  padding: 22px;
}

.feature-card h3 {
  margin-bottom: 10px;
}

.split-panel {
  grid-template-columns: minmax(0, 1.2fr) minmax(290px, 0.8fr);
  align-items: start;
}

.timeline {
  display: grid;
  gap: 16px;
  margin-top: 22px;
}

.timeline-step {
  display: grid;
  grid-template-columns: 58px minmax(0, 1fr);
  gap: 16px;
  align-items: start;
  padding: 20px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-soft);
  background: rgba(255, 255, 255, 0.04);
}

.timeline-index {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 58px;
  height: 58px;
  border-radius: 18px;
  background: var(--field);
  color: #f7fff6;
  font-weight: 700;
}

.cta-panel {
  align-self: stretch;
}

.site-footer {
  width: var(--content-width);
  margin: 0 auto;
  padding: 0 0 36px;
  color: var(--text-soft);
}

.game-layout {
  grid-template-columns: minmax(0, 1.45fr) minmax(280px, 0.75fr);
  align-items: start;
}

.match-header {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 16px;
}

.status-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 14px;
  border-radius: 999px;
  background: var(--accent-muted);
  color: var(--accent-dark);
  font-weight: 700;
  text-align: center;
}

.score-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-top: 24px;
}

.score-card {
  padding: 22px;
}

.score-card-player {
  background: linear-gradient(180deg, rgba(22, 151, 101, 0.14), rgba(255, 255, 255, 0.03));
}

.score-card-computer {
  background: linear-gradient(180deg, rgba(255, 122, 47, 0.14), rgba(255, 255, 255, 0.03));
}

.score-label {
  display: block;
  font-size: 0.95rem;
  color: var(--text-soft);
}

.score-value {
  display: block;
  margin-top: 10px;
  font-size: clamp(2.3rem, 5vw, 3.4rem);
  font-family: Georgia, "Times New Roman", serif;
}

.arena-board {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 140px minmax(0, 1fr);
  gap: 18px;
  align-items: center;
  margin-top: 24px;
}

.move-panel,
.feedback-panel {
  padding: 22px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-soft);
  background: rgba(255, 255, 255, 0.04);
  text-align: center;
}

.move-heading {
  margin: 0;
  font-weight: 700;
  color: var(--text-main);
}

.move-emoji {
  margin: 16px 0 12px;
  font-size: clamp(3rem, 8vw, 4.6rem);
}

.arena-center {
  text-align: center;
}

.versus-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 88px;
  height: 88px;
  border-radius: 50%;
  background: var(--field);
  color: #f8fff9;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.4rem;
  letter-spacing: 0.08em;
  box-shadow: 0 18px 30px rgba(15, 98, 68, 0.22);
}

.round-hint {
  margin: 14px 0 0;
  color: var(--text-soft);
  font-size: 0.95rem;
}

.feedback-panel {
  margin-top: 20px;
}

.result-text {
  margin: 0;
  font-size: 1.35rem;
  font-weight: 700;
}

.result-detail {
  margin: 10px 0 0;
}

.result-text.win {
  color: var(--field);
}

.result-text.lose {
  color: var(--accent-dark);
}

.result-text.draw {
  color: #765f26;
}

.choice-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-top: 20px;
}

.choice-button {
  display: grid;
  justify-items: center;
  gap: 8px;
  padding: 20px 16px;
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-md);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.03));
  cursor: pointer;
  transition: transform 180ms ease, box-shadow 180ms ease, opacity 180ms ease;
}

.choice-button:hover,
.choice-button:focus-visible {
  box-shadow: 0 16px 30px rgba(20, 50, 37, 0.12);
}

.choice-button:disabled {
  opacity: 0.55;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

.choice-emoji {
  font-size: 2rem;
}

.choice-name {
  font-weight: 700;
}

.choice-rule {
  color: var(--text-soft);
  font-size: 0.92rem;
}

.action-row {
  justify-content: space-between;
}

.info-panel {
  display: grid;
  gap: 18px;
}

.info-list,
.rules-steps {
  margin: 18px 0 0;
  padding-left: 20px;
}

.rules-layout {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  align-items: stretch;
}

.rule-table {
  display: grid;
  gap: 12px;
  margin-top: 20px;
}

.rule-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
  gap: 14px;
  align-items: center;
  padding: 18px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-soft);
  background: rgba(255, 255, 255, 0.04);
}

.rule-move,
.rule-result {
  font-weight: 700;
}

.rule-arrow {
  color: var(--accent-dark);
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.reveal-up {
  opacity: 0;
  transform: translateY(22px);
  animation: reveal-up 650ms ease forwards;
}

.delay-1 {
  animation-delay: 110ms;
}

.delay-2 {
  animation-delay: 220ms;
}

.delay-3 {
  animation-delay: 330ms;
}

@keyframes reveal-up {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 960px) {
  .hero-grid,
  .game-layout,
  .rules-layout,
  .split-panel {
    grid-template-columns: 1fr;
  }

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

  .arena-board {
    grid-template-columns: 1fr;
  }

  .arena-center {
    order: -1;
  }

  .choice-grid,
  .feature-grid,
  .stat-row {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  :root {
    --content-width: min(1120px, calc(100vw - 24px));
  }

  .hero-copy,
  .hero-panel,
  .section-block,
  .game-panel,
  .info-card,
  .rules-panel,
  .cta-panel {
    padding: 22px;
  }

  .site-header {
    padding-top: 18px;
  }

  .site-nav {
    width: 100%;
  }

  .nav-link {
    flex: 1 1 auto;
    text-align: center;
  }

  .score-grid,
  .choice-grid {
    grid-template-columns: 1fr;
  }

  .action-row {
    flex-direction: column;
  }

  .button {
    width: 100%;
  }

  .preview-orbit {
    gap: 10px;
  }

  .preview-orbit span {
    width: 62px;
    height: 62px;
  }
}