/* =========================================================
   WHOBEATS.ME - HIGH-OCTANE COMPETITIVE GAMING DESIGN SYSTEM
   ========================================================= */

@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@400;600;700;900&family=Space+Grotesk:wght@500;700&family=JetBrains+Mono:wght@500;700;800&display=swap');

:root {
  --bg-deep: #05010e;
  --bg-surface: rgba(18, 9, 36, 0.72);
  --bg-surface-elevated: rgba(30, 16, 58, 0.85);
  --bg-card: rgba(22, 10, 44, 0.65);
  --bg-glass: rgba(14, 4, 30, 0.65);

  --accent-cyan: #00f0ff;
  --accent-cyan-glow: rgba(0, 240, 255, 0.45);
  --accent-magenta: #ff007f;
  --accent-magenta-glow: rgba(255, 0, 127, 0.45);
  --accent-gold: #ffc83b;
  --accent-gold-glow: rgba(255, 200, 59, 0.45);
  --accent-emerald: #00ff88;
  --accent-emerald-glow: rgba(0, 255, 136, 0.45);
  --accent-crimson: #ff2252;

  --text-primary: #ffffff;
  --text-secondary: #9eaad0;
  --text-dim: #657199;

  --border-subtle: rgba(0, 240, 255, 0.15);
  --border-active: rgba(0, 240, 255, 0.55);
  --border-glow: 0 0 16px rgba(0, 240, 255, 0.25);

  --font-main: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', 'Courier New', monospace;
  --font-title: 'Space Grotesk', sans-serif;

  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --transition-fast: 0.18s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-smooth: 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Reset & Base */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
}

html, body {
  min-height: 100%;
  background: var(--bg-deep);
  color: var(--text-primary);
  font-family: var(--font-main);
  overflow-x: hidden;
  line-height: 1.5;
  selection-background-color: var(--accent-magenta);
}

/* Background Atmosphere */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background:
    radial-gradient(circle at 20% 15%, rgba(255, 0, 127, 0.12), transparent 45%),
    radial-gradient(circle at 80% 80%, rgba(0, 240, 255, 0.10), transparent 50%),
    radial-gradient(circle at 50% 50%, rgba(58, 12, 94, 0.25), transparent 70%);
  pointer-events: none;
  z-index: -1;
}

/* Subtle Animated Grid Overlay */
.bg-grid {
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(255, 255, 255, 0.02) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
  background-size: 40px 40px;
  mask-image: radial-gradient(ellipse at center, black 40%, transparent 80%);
  pointer-events: none;
  z-index: -1;
}

/* Typography Helpers */
h1, h2, h3, h4 {
  font-family: var(--font-title);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

.mono {
  font-family: var(--font-mono);
}

.glow-cyan {
  text-shadow: 0 0 14px var(--accent-cyan-glow);
}
.glow-magenta {
  text-shadow: 0 0 14px var(--accent-magenta-glow);
}
.glow-gold {
  text-shadow: 0 0 14px var(--accent-gold-glow);
}

/* =========================================================
   HEADER / NAVBAR
   ========================================================= */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(14px);
  background: rgba(8, 2, 20, 0.78);
  border-bottom: 1px solid var(--border-subtle);
  padding: 12px 24px;
}

.header-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  cursor: pointer;
}

.logo-badge {
  background: linear-gradient(135deg, var(--accent-magenta), var(--accent-cyan));
  color: #050013;
  font-weight: 900;
  font-size: 14px;
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  letter-spacing: 0.1em;
}

.brand-title {
  font-size: 20px;
  font-weight: 900;
  letter-spacing: 0.08em;
  color: #ffffff;
  text-transform: uppercase;
}
.brand-title span {
  color: var(--accent-cyan);
}

.header-nav {
  display: flex;
  align-items: center;
  gap: 16px;
}

.nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 600;
  font-size: 14px;
  letter-spacing: 0.04em;
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  transition: var(--transition-fast);
  cursor: pointer;
}
.nav-link:hover, .nav-link.active {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.06);
}

.profile-pill {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: 999px;
  font-size: 13px;
  font-family: var(--font-mono);
  color: var(--accent-cyan);
  cursor: pointer;
  transition: var(--transition-fast);
}
.profile-pill:hover {
  border-color: var(--accent-cyan);
  box-shadow: 0 0 12px var(--accent-cyan-glow);
}
.profile-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-emerald);
  box-shadow: 0 0 8px var(--accent-emerald-glow);
}

/* =========================================================
   BUTTONS (CYBER ANGLED & GLOWING)
   ========================================================= */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 28px;
  font-family: var(--font-main);
  font-size: 14px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  text-decoration: none;
  cursor: pointer;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast);
  user-select: none;
}

.btn-primary {
  background: linear-gradient(135deg, #00f0ff 0%, #0099ff 100%);
  color: #050013;
  border-color: #00f0ff;
  box-shadow: 0 0 20px rgba(0, 240, 255, 0.35);
}
.btn-primary:hover {
  background: linear-gradient(135deg, #33f3ff 0%, #1ab2ff 100%);
  box-shadow: 0 0 30px rgba(0, 240, 255, 0.65);
  transform: translateY(-2px);
}
.btn-primary:active {
  transform: translateY(1px);
}

.btn-accent {
  background: linear-gradient(135deg, #ff007f 0%, #9900ff 100%);
  color: #ffffff;
  border-color: #ff007f;
  box-shadow: 0 0 20px rgba(255, 0, 127, 0.4);
}
.btn-accent:hover {
  background: linear-gradient(135deg, #ff2295 0%, #b01aff 100%);
  box-shadow: 0 0 32px rgba(255, 0, 127, 0.7);
  transform: translateY(-2px);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.05);
  color: #ffffff;
  border: 1px solid rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(8px);
}
.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: var(--accent-cyan);
  box-shadow: 0 0 16px var(--accent-cyan-glow);
  transform: translateY(-1px);
}

.btn-sm {
  padding: 8px 16px;
  font-size: 12px;
}
.btn-inv{
  padding: 1px 1px;
  font-size: 10px;
}
.btn-lg {
  padding: 18px 40px;
  font-size: 16px;
  letter-spacing: 0.16em;
}

/* =========================================================
   CONTAINER & LAYOUT
   ========================================================= */
.app-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 30px 20px 80px;
}

.view-section {
  display: none;
  animation: fadeIn 0.3s ease-out forwards;
}
.view-section.active {
  display: block;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* =========================================================
   HOME / DISCOVERY VIEW
   ========================================================= */
.hero-banner {
  text-align: center;
  padding: 50px 20px 60px;
  position: relative;
}

.hero-tagline-eyebrow {
  display: inline-block;
  color: var(--accent-cyan);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  margin-bottom: 16px;
  background: rgba(0, 240, 255, 0.08);
  border: 1px solid var(--border-subtle);
  padding: 6px 16px;
  border-radius: 999px;
}

.hero-headline {
  font-size: clamp(38px, 8vw, 76px);
  font-weight: 900;
  line-height: 1.02;
  text-transform: uppercase;
  margin-bottom: 20px;
}
.hero-headline span.gradient-text {
  background: linear-gradient(135deg, #ffffff 30%, var(--accent-cyan) 75%, var(--accent-magenta) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  max-width: 580px;
  margin: 0 auto 34px;
  color: var(--text-secondary);
  font-size: 18px;
  line-height: 1.6;
}

.loop-steps {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
  margin: 20px 0 40px;
}
.loop-pill {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  padding: 8px 18px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 8px;
}
.loop-arrow {
  color: var(--accent-cyan);
  font-size: 14px;
}

/* Featured Games Section */
.section-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 24px;
  border-bottom: 1px solid var(--border-subtle);
  padding-bottom: 12px;
}
.section-title {
  font-size: 24px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.section-badge {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--accent-cyan);
  text-transform: uppercase;
  letter-spacing: 0.15em;
}

.games-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 24px;
  margin-bottom: 50px;
}

.game-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition-smooth);
  position: relative;
  display: flex;
  flex-direction: column;
}
.game-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-active);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.5), 0 0 20px rgba(0, 240, 255, 0.2);
}

.game-thumb-wrap {
  position: relative;
  height: 200px;
  background: #0d0422;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}
.game-thumb-art {
  width: 100%;
  height: 100%;
  background:
    radial-gradient(circle at 50% 60%, rgba(255, 0, 127, 0.35), transparent 60%),
    linear-gradient(to bottom, #070116, #1b0735);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 56px;
  user-select: none;
}
.game-badge {
  position: absolute;
  top: 12px;
  left: 12px;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(6px);
  border: 1px solid var(--accent-cyan);
  color: var(--accent-cyan);
  font-size: 11px;
  font-family: var(--font-mono);
  font-weight: 700;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  letter-spacing: 0.1em;
}

.game-card-body {
  padding: 22px;
  display: flex;
  flex-direction: column;
  flex: 1;
}
.game-title {
  font-size: 22px;
  margin-bottom: 6px;
}
.game-tagline {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--accent-cyan);
  letter-spacing: 0.15em;
  margin-bottom: 12px;
  text-transform: uppercase;
}
.game-desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: 20px;
  flex: 1;
}

.game-card-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
  background: rgba(0, 0, 0, 0.3);
  padding: 12px;
  border-radius: var(--radius-sm);
  margin-bottom: 20px;
  font-family: var(--font-mono);
}
.game-stat-item span {
  display: block;
  font-size: 10px;
  color: var(--text-dim);
  letter-spacing: 0.1em;
}
.game-stat-item strong {
  display: block;
  font-size: 16px;
  color: var(--accent-cyan);
}

/* Platform Features / Loop Explainer */
.features-strip {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
  margin-top: 40px;
}
.feature-box {
  background: var(--bg-glass);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 24px;
  backdrop-filter: blur(8px);
}
.feature-icon {
  font-size: 28px;
  margin-bottom: 12px;
}
.feature-box h4 {
  font-size: 18px;
  margin-bottom: 8px;
}
.feature-box p {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* =========================================================
   GAME VIEW & HOST CONTAINER
   ========================================================= */
.game-view-wrapper {
  display: flex;
  flex-direction: column;
  height: calc(100vh - 100px);
  min-height: 600px;
  max-height: 850px;
  background: #000;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: 0 0 35px rgba(0, 0, 0, 0.8), 0 0 20px rgba(0, 240, 255, 0.15);
  position: relative;
}

/* Game Top Platform Control Bar */
.game-top-bar {
  background: rgba(10, 3, 24, 0.95);
  border-bottom: 1px solid var(--border-subtle);
  padding: 10px 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  z-index: 20;
}
.game-bar-info {
  display: flex;
  align-items: center;
  gap: 14px;
}
.game-bar-title {
  font-weight: 800;
  font-size: 15px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}
.challenge-active-indicator {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(255, 0, 127, 0.2);
  border: 1px solid var(--accent-magenta);
  color: #ff99cc;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 999px;
  letter-spacing: 0.1em;
}

.game-bar-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

/* The actual Iframe host */
#game-frame-container {
  flex: 1;
  width: 100%;
  height: 100%;
  background: #050013;
  position: relative;
}

/* Game Launch Pre-Overlay (PRD Section 6 minimal game page) */
.game-launch-overlay {
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 50% 45%, rgba(45, 10, 85, 0.85), rgba(5, 0, 19, 0.98) 70%);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 30px;
  z-index: 10;
  backdrop-filter: blur(8px);
}
.game-launch-overlay.hidden {
  display: none;
}
.game-launch-title {
  font-size: clamp(42px, 10vw, 80px);
  line-height: 0.9;
  letter-spacing: -0.04em;
  margin-bottom: 12px;
  font-style: italic;
  text-shadow: 4px 0 var(--accent-magenta), 0 0 25px var(--accent-cyan);
}
.game-launch-subtitle {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--text-secondary);
  letter-spacing: 0.25em;
  margin-bottom: 30px;
}
.game-launch-stats {
  display: flex;
  gap: 32px;
  margin-bottom: 36px;
}
.launch-stat-box {
  background: rgba(14, 2, 38, 0.7);
  border: 1px solid var(--border-subtle);
  padding: 12px 24px;
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
}
.launch-stat-box span {
  display: block;
  font-size: 10px;
  color: var(--text-dim);
  letter-spacing: 0.15em;
}
.launch-stat-box strong {
  display: block;
  font-size: 24px;
  color: var(--accent-cyan);
  margin-top: 4px;
}

/* =========================================================
   RESULT SCREEN (PRD Section 19 & 44)
   ========================================================= */
.result-modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(4, 1, 12, 0.88);
  backdrop-filter: blur(12px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  animation: fadeIn 0.2s ease-out;
}
.result-modal-backdrop.hidden {
  display: none;
}

.result-card {
  background: radial-gradient(circle at 50% 30%, rgba(38, 12, 72, 0.9), rgba(12, 4, 28, 0.98) 75%);
  border: 1px solid var(--accent-cyan);
  box-shadow: 0 0 45px rgba(0, 240, 255, 0.35), 0 0 100px rgba(255, 0, 127, 0.15);
  border-radius: var(--radius-lg);
  max-width: 540px;
  width: 100%;
  padding: 36px 28px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.result-badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.3em;
  padding: 4px 14px;
  border-radius: 999px;
  background: rgba(0, 240, 255, 0.12);
  border: 1px solid var(--border-subtle);
  color: var(--accent-cyan);
  margin-bottom: 14px;
}

/* Huge Score element (PRD Section 44) */
.result-main-score-label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.3em;
  color: var(--text-dim);
  text-transform: uppercase;
}
.result-main-score {
  font-size: clamp(54px, 12vw, 84px);
  font-family: var(--font-title);
  font-weight: 900;
  line-height: 0.95;
  margin: 6px 0 16px;
  color: #ffffff;
  text-shadow: 0 0 25px var(--accent-cyan-glow);
}

.result-sub-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  max-width: 320px;
  margin: 0 auto 26px;
  background: rgba(0, 0, 0, 0.35);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 12px;
  font-family: var(--font-mono);
}
.result-sub-stats span {
  display: block;
  font-size: 10px;
  color: var(--text-dim);
  letter-spacing: 0.15em;
}
.result-sub-stats strong {
  display: block;
  font-size: 18px;
  color: #ffffff;
  margin-top: 2px;
}

/* Comparison section if challenge */
.result-comparison-banner {
  background: rgba(20, 5, 45, 0.7);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  margin-bottom: 26px;
}
.comparison-status {
  font-size: 22px;
  font-weight: 900;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 10px;
}
.status-win {
  color: var(--accent-emerald);
  text-shadow: 0 0 16px var(--accent-emerald-glow);
}
.status-loss {
  color: var(--accent-crimson);
  text-shadow: 0 0 16px rgba(255, 34, 82, 0.6);
}
.status-tie {
  color: var(--accent-gold);
}

.comparison-grid {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 12px;
  font-family: var(--font-mono);
}
.comp-player span {
  display: block;
  font-size: 10px;
  color: var(--text-dim);
  letter-spacing: 0.1em;
}
.comp-player strong {
  display: block;
  font-size: 22px;
  color: #fff;
}
.comp-vs {
  font-size: 12px;
  color: var(--accent-magenta);
  font-weight: 800;
}
.comp-delta {
  font-size: 13px;
  margin-top: 10px;
  font-weight: 700;
}

/* Actions in result */
.result-actions {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.result-btn-row {
  display: flex;
  gap: 10px;
  justify-content: center;
}
.result-btn-row .btn {
  flex: 1;
}

/* =========================================================
   CHALLENGE ACCEPTANCE SCREEN (PRD Section 18)
   ========================================================= */
.challenge-hero-card {
  max-width: 620px;
  margin: 30px auto;
  background: radial-gradient(circle at 50% 20%, rgba(45, 12, 85, 0.85), rgba(12, 4, 30, 0.98) 75%);
  border: 1px solid var(--accent-cyan);
  box-shadow: 0 0 40px rgba(0, 240, 255, 0.25);
  border-radius: var(--radius-lg);
  padding: 44px 32px;
  text-align: center;
}
.challenge-creator-eyebrow {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.3em;
  color: var(--accent-cyan);
  text-transform: uppercase;
  margin-bottom: 8px;
}
.challenge-target-score {
  font-size: clamp(56px, 14vw, 92px);
  font-family: var(--font-title);
  font-weight: 900;
  line-height: 0.92;
  color: #fff;
  text-shadow: 0 0 30px var(--accent-cyan-glow);
  margin-bottom: 12px;
}
.challenge-prompt-text {
  font-size: 22px;
  font-weight: 800;
  letter-spacing: 0.05em;
  color: var(--text-primary);
  margin-bottom: 28px;
}
.challenge-details-strip {
  display: flex;
  justify-content: center;
  gap: 20px;
  margin-bottom: 32px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-secondary);
}
.challenge-details-strip span strong {
  color: #fff;
}

/* =========================================================
   SHARE MODAL
   ========================================================= */
.share-modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(3, 1, 10, 0.88);
  backdrop-filter: blur(10px);
  z-index: 1100;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}
.share-modal-backdrop.hidden {
  display: none;
}
.share-card {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-active);
  box-shadow: 0 0 40px rgba(0, 240, 255, 0.3);
  border-radius: var(--radius-md);
  max-width: 480px;
  width: 100%;
  padding: 30px;
  text-align: center;
}
.share-title {
  font-size: 22px;
  margin-bottom: 8px;
}
.share-subtitle {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 20px;
}
.copy-link-box {
  display: flex;
  gap: 8px;
  background: rgba(0, 0, 0, 0.4);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 6px 8px 6px 14px;
  margin-bottom: 20px;
  align-items: center;
}
.copy-link-input {
  flex: 1;
  background: transparent;
  border: none;
  color: #fff;
  font-family: var(--font-mono);
  font-size: 13px;
  outline: none;
}
.social-buttons-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
  margin-bottom: 20px;
}
.social-btn {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: #fff;
  padding: 10px 6px;
  border-radius: var(--radius-sm);
  font-size: 12px;
  font-weight: 700;
  text-decoration: none;
  cursor: pointer;
  transition: var(--transition-fast);
}
.social-btn:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: var(--accent-cyan);
}

/* =========================================================
   LEADERBOARD VIEW (PRD Section 27)
   ========================================================= */
.leaderboard-wrap {
  max-width: 800px;
  margin: 0 auto;
}
.leaderboard-header-banner {
  text-align: center;
  margin-bottom: 30px;
}
.leaderboard-title {
  font-size: 36px;
  text-transform: uppercase;
}
.leaderboard-table-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  overflow: hidden;
}
.leaderboard-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}
.leaderboard-table th {
  background: rgba(10, 3, 25, 0.85);
  padding: 14px 18px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.15em;
  color: var(--text-dim);
  text-transform: uppercase;
  border-bottom: 1px solid var(--border-subtle);
}
.leaderboard-table td {
  padding: 16px 18px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
  font-size: 14px;
}
.leaderboard-table tr:hover td {
  background: rgba(255, 255, 255, 0.02);
}
.rank-badge {
  font-family: var(--font-mono);
  font-weight: 800;
  display: inline-block;
  width: 28px;
  text-align: center;
}
.rank-1 { color: #ffd700; text-shadow: 0 0 10px rgba(255, 215, 0, 0.6); }
.rank-2 { color: #c0c0c0; text-shadow: 0 0 10px rgba(192, 192, 192, 0.6); }
.rank-3 { color: #cd7f32; text-shadow: 0 0 10px rgba(205, 127, 50, 0.6); }
.player-name-cell {
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 10px;
}
.leaderboard-score {
  font-family: var(--font-mono);
  font-weight: 800;
  font-size: 16px;
  color: var(--accent-cyan);
}

/* =========================================================
   USER PROFILE MODAL
   ========================================================= */
.profile-modal-card {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-active);
  border-radius: var(--radius-md);
  max-width: 440px;
  width: 100%;
  padding: 28px;
  text-align: center;
}
.profile-input-group {
  margin: 20px 0;
  text-align: left;
}
.profile-input-group label {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-secondary);
  letter-spacing: 0.1em;
  margin-bottom: 8px;
}
.profile-text-input {
  width: 100%;
  background: rgba(0, 0, 0, 0.4);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  font-family: var(--font-main);
  font-size: 15px;
  color: #fff;
  outline: none;
}
.profile-text-input:focus {
  border-color: var(--accent-cyan);
  box-shadow: 0 0 12px var(--accent-cyan-glow);
}
.profile-stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin: 20px 0;
  text-align: left;
}
.profile-stat-box {
  background: rgba(0, 0, 0, 0.3);
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
}
.profile-stat-box span {
  display: block;
  font-size: 10px;
  color: var(--text-dim);
}
.profile-stat-box strong {
  display: block;
  font-size: 18px;
  color: var(--accent-cyan);
  margin-top: 4px;
}

/* Toast Notifications */
.toast-notice {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background: rgba(14, 4, 30, 0.95);
  border: 1px solid var(--accent-cyan);
  box-shadow: 0 0 20px var(--accent-cyan-glow);
  color: #fff;
  padding: 12px 24px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.05em;
  z-index: 9999;
  transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  pointer-events: none;
}
.toast-notice.show {
  transform: translateX(-50%) translateY(0);
}

/* =========================================================
   MULTIPLAYER GAME ROOMS (V1)
   ========================================================= */
.room-lobby-card, .room-results-card {
  max-width: 820px;
  margin: 20px auto;
  background: radial-gradient(circle at 50% 15%, rgba(45, 12, 85, 0.85), rgba(12, 4, 30, 0.98) 75%);
  border: 1px solid var(--accent-cyan);
  box-shadow: 0 0 40px rgba(0, 240, 255, 0.25), 0 0 80px rgba(255, 0, 127, 0.15);
  border-radius: var(--radius-lg);
  padding: 36px 32px;
  position: relative;
  overflow: hidden;
}

.lobby-header-row {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 24px;
  flex-wrap: wrap;
  gap: 16px;
}

.room-code-title {
  font-size: clamp(32px, 6vw, 48px);
  font-weight: 900;
  letter-spacing: 0.08em;
  margin-bottom: 6px;
}

.lobby-meta-strip {
  display: flex;
  gap: 12px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--text-secondary);
}

.room-capacity-badge {
  background: rgba(0, 240, 255, 0.12);
  border: 1px solid var(--accent-cyan);
  color: var(--accent-cyan);
  font-family: var(--font-mono);
  font-weight: 800;
  font-size: 13px;
  letter-spacing: 0.15em;
  padding: 8px 16px;
  border-radius: 999px;
  box-shadow: 0 0 16px var(--accent-cyan-glow);
}

.lobby-share-box {
  background: rgba(0, 0, 0, 0.35);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 16px;
  margin-bottom: 28px;
}

.lobby-roster-section {
  margin-bottom: 32px;
}

.roster-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.15em;
  color: var(--text-dim);
}

.player-roster-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 14px;
}

.roster-player-card {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: var(--transition-fast);
}
.roster-player-card:hover {
  border-color: var(--accent-cyan);
  background: rgba(0, 240, 255, 0.05);
}
.roster-player-card.is-current {
  border-color: var(--accent-cyan);
  box-shadow: 0 0 12px var(--accent-cyan-glow);
}

.roster-player-info {
  display: flex;
  align-items: center;
  gap: 10px;
}
.roster-avatar {
  font-size: 20px;
}
.roster-player-name {
  font-weight: 700;
  font-size: 14px;
  color: #fff;
}
.host-crown {
  font-size: 12px;
  margin-left: 4px;
  color: var(--accent-gold);
}

.status-pill {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.1em;
  padding: 4px 8px;
  border-radius: 999px;
  text-transform: uppercase;
}
.status-waiting {
  background: rgba(0, 240, 255, 0.15);
  color: var(--accent-cyan);
  border: 1px solid rgba(0, 240, 255, 0.4);
}
.status-ready {
  background: rgba(255, 200, 59, 0.15);
  color: var(--accent-gold);
  border: 1px solid rgba(255, 200, 59, 0.4);
}
.status-active, .status-playing {
  background: rgba(0, 255, 136, 0.15);
  color: var(--accent-emerald);
  border: 1px solid rgba(0, 255, 136, 0.4);
}
.status-finished {
  background: rgba(153, 0, 255, 0.2);
  color: #d699ff;
  border: 1px solid rgba(153, 0, 255, 0.4);
}
.status-abandoned {
  background: rgba(255, 34, 82, 0.15);
  color: var(--accent-crimson);
  border: 1px solid rgba(255, 34, 82, 0.4);
}

.lobby-waiting-pulse {
  background: rgba(0, 240, 255, 0.08);
  border: 1px solid var(--border-active);
  border-radius: var(--radius-sm);
  padding: 18px 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--text-primary);
}

.pulse-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--accent-cyan);
  box-shadow: 0 0 10px var(--accent-cyan);
  animation: pulseBlink 1.5s infinite ease-in-out;
}

@keyframes pulseBlink {
  0%, 100% { opacity: 0.3; transform: scale(0.9); }
  50% { opacity: 1; transform: scale(1.2); }
}

.lobby-tip {
  font-size: 12px;
  color: var(--text-secondary);
  font-family: var(--font-mono);
  margin-top: 6px;
  text-align: center;
}

/* Room Results Styles */
.room-results-headline {
  font-size: clamp(36px, 7vw, 56px);
  line-height: 1.05;
  margin-bottom: 6px;
  letter-spacing: -0.02em;
}
.room-results-sub {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 24px;
}

.winner-celebration-banner {
  background: linear-gradient(135deg, rgba(255, 200, 59, 0.25) 0%, rgba(255, 0, 127, 0.25) 100%);
  border: 2px solid var(--accent-gold);
  border-radius: var(--radius-md);
  padding: 18px 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  box-shadow: 0 0 30px rgba(255, 200, 59, 0.4);
  margin-bottom: 24px;
  animation: winnerGlow 2s infinite alternate;
}
@keyframes winnerGlow {
  from { box-shadow: 0 0 20px rgba(255, 200, 59, 0.3); }
  to { box-shadow: 0 0 40px rgba(255, 200, 59, 0.7); }
}
.winner-trophy {
  font-size: 38px;
}
.winner-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.25em;
  color: var(--accent-gold);
  font-weight: 800;
}
.winner-name {
  font-size: 26px;
  font-weight: 900;
  color: #fff;
  letter-spacing: 0.05em;
}

.personal-run-summary-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-bottom: 24px;
}
.stat-bubble {
  background: rgba(0, 0, 0, 0.45);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 14px;
  text-align: center;
}
.stat-bubble span {
  display: block;
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text-dim);
  letter-spacing: 0.15em;
}
.stat-bubble strong {
  display: block;
  font-size: 20px;
  margin-top: 4px;
  color: #fff;
}

.leaderboard-live-status-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  background: rgba(0, 0, 0, 0.3);
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--accent-cyan);
  border-bottom: 1px solid var(--border-subtle);
}
.live-pulse-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-emerald);
  box-shadow: 0 0 8px var(--accent-emerald);
  animation: pulseBlink 1.5s infinite ease-in-out;
}

/* =========================================================
   HAMBURGER NAV BUTTON (hidden on desktop)
   ========================================================= */
.nav-hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  padding: 6px;
  background: transparent;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  cursor: pointer;
  flex-shrink: 0;
}
.nav-hamburger span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--text-secondary);
  border-radius: 2px;
  transition: var(--transition-fast);
}
.nav-hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-hamburger.open span:nth-child(2) { opacity: 0; }
.nav-hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile nav drawer */
.mobile-nav-drawer {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 99;
  background: rgba(5, 1, 14, 0.97);
  backdrop-filter: blur(16px);
  flex-direction: column;
  align-items: stretch;
  padding: calc(72px + env(safe-area-inset-top)) 20px 30px;
  gap: 6px;
  overflow-y: auto;
}
.mobile-nav-drawer.open {
  display: flex;
}
.mobile-nav-drawer .nav-link {
  font-size: 18px;
  padding: 16px 18px;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  text-align: left;
  width: 100%;
  background: var(--bg-surface);
  color: var(--text-primary);
}
.mobile-nav-drawer .nav-link:hover,
.mobile-nav-drawer .nav-link.active {
  background: rgba(0, 240, 255, 0.08);
  border-color: var(--border-active);
}
.mobile-nav-drawer .profile-pill {
  justify-content: flex-start;
  border-radius: var(--radius-md);
  font-size: 16px;
  padding: 14px 18px;
  border: 1px solid var(--border-subtle);
}

/* =========================================================
   RESPONSIVE — TABLET (≤ 900px)
   ========================================================= */
@media (max-width: 900px) {
  .games-grid { grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); }
  .features-strip { grid-template-columns: repeat(2, 1fr); }
  .room-lobby-card, .room-results-card { padding: 28px 20px; }
}

/* =========================================================
   RESPONSIVE — MOBILE (≤ 768px)
   ========================================================= */
@media (max-width: 768px) {
  /* --- Header --- */
  .site-header { padding: 10px 14px; }
  .header-nav { display: none; }
  .nav-hamburger { display: flex; }

  /* --- App container --- */
  .app-container { padding: 16px 12px 80px; }

  /* --- Hero banner --- */
  .hero-banner { padding: 32px 4px 40px; }
  .hero-subtitle { font-size: 15px; }
  .loop-steps { gap: 8px; }
  .loop-pill { font-size: 11px; padding: 6px 12px; }
  .loop-arrow { font-size: 12px; }

  /* --- Games grid --- */
  .games-grid { grid-template-columns: 1fr; gap: 16px; }
  .game-thumb-wrap { height: 160px; }

  /* --- Features strip --- */
  .features-strip { grid-template-columns: 1fr; gap: 12px; margin-top: 28px; }

  /* --- Game view wrapper --- */
  .game-view-wrapper {
    height: calc(100dvh - 64px);
    min-height: unset;
    max-height: unset;
    border-radius: var(--radius-sm);
  }

  /* --- Game top bar --- */
  .game-top-bar { padding: 8px 12px; flex-wrap: wrap; gap: 6px; }
  .game-bar-title { font-size: 13px; }
  .game-bar-actions { gap: 6px; }
  .game-bar-actions .btn { padding: 6px 10px; font-size: 11px; }
  .challenge-active-indicator { font-size: 10px; padding: 2px 8px; }

  /* --- Game launch overlay stats --- */
  .game-launch-stats { flex-direction: column; gap: 10px; align-items: center; margin-bottom: 24px; }
  .launch-stat-box { width: 100%; max-width: 260px; padding: 10px 18px; }
  .launch-stat-box strong { font-size: 18px; }
  .game-launch-subtitle { font-size: 11px; letter-spacing: 0.18em; margin-bottom: 20px; }

  /* --- Result card --- */
  .result-card { padding: 22px 16px; }
  .result-btn-row { flex-direction: column; }
  .result-main-score { font-size: clamp(42px, 14vw, 68px); }
  .result-sub-stats { max-width: 100%; }

  /* --- Challenge card --- */
  .challenge-hero-card { padding: 28px 16px; margin: 16px auto; }
  .challenge-prompt-text { font-size: 18px; }
  .challenge-details-strip { flex-direction: column; align-items: center; gap: 8px; }

  /* --- Share modal --- */
  .share-card { padding: 22px 16px; }
  .social-buttons-grid { grid-template-columns: repeat(2, 1fr); }

  /* --- Profile modal --- */
  .profile-modal-card { padding: 20px 16px; }
  .profile-stats-grid { grid-template-columns: repeat(2, 1fr); gap: 8px; }

  /* --- Leaderboard --- */
  .leaderboard-wrap { padding: 0 4px; }
  .leaderboard-table-card { overflow-x: auto; -webkit-overflow-scrolling: touch; }
  .leaderboard-table th,
  .leaderboard-table td { padding: 10px 12px; font-size: 13px; }
  .leaderboard-title { font-size: 26px; }

  /* --- Room lobby / results --- */
  .room-lobby-card, .room-results-card { padding: 22px 14px; margin: 12px auto; border-radius: var(--radius-md); }
  .player-roster-grid { grid-template-columns: 1fr; }
  .lobby-header-row { flex-direction: column; gap: 10px; }
  .lobby-share-box { padding: 12px; }
  .personal-run-summary-strip { grid-template-columns: repeat(3, 1fr); gap: 8px; }
  .stat-bubble { padding: 10px 8px; }
  .stat-bubble strong { font-size: 16px; }
  .winner-celebration-banner { padding: 14px 16px; gap: 10px; flex-wrap: wrap; }
  .winner-name { font-size: 20px; }
  .comparison-grid { grid-template-columns: 1fr auto 1fr; gap: 6px; }
  .comp-player strong { font-size: 16px; }

  /* --- Modals backdrop padding --- */
  .share-modal-backdrop { padding: 12px; align-items: flex-end; }
  .result-modal-backdrop { padding: 12px; }

  /* --- Toast --- */
  .toast-notice { bottom: calc(16px + env(safe-area-inset-bottom)); font-size: 12px; padding: 10px 18px; }
}

/* =========================================================
   RESPONSIVE — SMALL MOBILE (≤ 430px)
   ========================================================= */
@media (max-width: 430px) {
  .hero-headline { font-size: clamp(28px, 9vw, 44px); }
  .brand-title { font-size: 15px; }
  .logo-badge { font-size: 12px; padding: 3px 6px; }
  .game-card-body { padding: 16px; }
  .section-title { font-size: 18px; }
  .result-card { padding: 18px 12px; }
  .profile-modal-card { padding: 16px 12px; }
  .share-card { padding: 18px 12px; }
  .room-lobby-card, .room-results-card { padding: 16px 10px; }
  .personal-run-summary-strip { gap: 6px; }
  .stat-bubble strong { font-size: 14px; }
  .game-launch-title { font-size: clamp(32px, 10vw, 56px); }
}