/* ============================================================
   NAMEWHEELS.COM — Main Stylesheet
   Performance: Critical CSS is inlined in HTML <head>
   This file handles everything beyond first paint.
   ============================================================ */

/* ---------- IMPORTS ---------- */
@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700;800;900&family=Space+Mono:wght@400;700&display=swap');

/* ---------- CSS CUSTOM PROPERTIES ---------- */
:root {
  /* Brand Palette */
  --clr-bg:          #0c0e14;
  --clr-bg-alt:      #12151e;
  --clr-surface:     #181c28;
  --clr-surface-alt: #1f2436;
  --clr-border:      #2a2f42;
  --clr-text:        #e8eaf0;
  --clr-text-muted:  #8b90a5;
  --clr-text-dim:    #5c6178;

  /* Accent System */
  --clr-accent:      #6c5ce7;
  --clr-accent-glow: rgba(108, 92, 231, 0.35);
  --clr-hot:         #fd7272;
  --clr-sun:         #feca57;
  --clr-mint:        #00d2d3;
  --clr-lime:        #1dd1a1;
  --clr-pink:        #f368e0;
  --clr-sky:         #54a0ff;

  /* Wheel Segment Colors */
  --seg-1: #6c5ce7; --seg-2: #fd7272; --seg-3: #feca57;
  --seg-4: #00d2d3; --seg-5: #1dd1a1; --seg-6: #f368e0;
  --seg-7: #54a0ff; --seg-8: #ff9f43; --seg-9: #a29bfe;
  --seg-10: #ff6b6b; --seg-11: #48dbfb; --seg-12: #ffeaa7;

  /* Typography */
  --font-display: 'Outfit', sans-serif;
  --font-mono:    'Space Mono', monospace;

  /* Spacing */
  --sp-xs: 0.25rem; --sp-sm: 0.5rem; --sp-md: 1rem;
  --sp-lg: 1.5rem; --sp-xl: 2rem; --sp-2xl: 3rem;
  --sp-3xl: 4rem; --sp-4xl: 6rem;

  /* Radii */
  --radius-sm: 8px;  --radius-md: 12px;
  --radius-lg: 16px; --radius-xl: 24px;
  --radius-full: 9999px;

  /* Transitions */
  --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-spring:   cubic-bezier(0.34, 1.56, 0.64, 1);
  --duration-fast: 150ms;
  --duration-med:  300ms;
  --duration-slow: 500ms;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0,0,0,.3);
  --shadow-md: 0 4px 16px rgba(0,0,0,.4);
  --shadow-lg: 0 8px 32px rgba(0,0,0,.5);
  --shadow-glow: 0 0 40px var(--clr-accent-glow);

  /* Layout */
  --max-w: 1280px;
  --header-h: 64px;
}

/* ---------- LIGHT MODE ---------- */
[data-theme="light"] {
  --clr-bg:          #f5f6fa;
  --clr-bg-alt:      #eef0f6;
  --clr-surface:     #ffffff;
  --clr-surface-alt: #f0f1f5;
  --clr-border:      #d8dae5;
  --clr-text:        #1a1c28;
  --clr-text-muted:  #6b7089;
  --clr-text-dim:    #9ea2b8;
  --shadow-sm: 0 1px 3px rgba(0,0,0,.08);
  --shadow-md: 0 4px 16px rgba(0,0,0,.1);
  --shadow-lg: 0 8px 32px rgba(0,0,0,.12);
}

/* ---------- RESET & BASE ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  font-size: 16px;
}

body {
  font-family: var(--font-display);
  background: var(--clr-bg);
  color: var(--clr-text);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a { color: inherit; text-decoration: none; }
img, svg { display: block; max-width: 100%; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
ul, ol { list-style: none; }

::selection {
  background: var(--clr-accent);
  color: #fff;
}

/* Focus visible for accessibility */
:focus-visible {
  outline: 2px solid var(--clr-accent);
  outline-offset: 3px;
}

/* ---------- UTILITIES ---------- */
.container { max-width: var(--max-w); margin: 0 auto; padding: 0 var(--sp-lg); }
.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; }

/* ---------- BACKGROUND GRID / NOISE ---------- */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image:
    radial-gradient(circle at 20% 20%, rgba(108,92,231,.06) 0%, transparent 50%),
    radial-gradient(circle at 80% 80%, rgba(253,114,114,.04) 0%, transparent 50%);
  pointer-events: none;
  z-index: 0;
}

body::after {
  content: '';
  position: fixed;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg width='60' height='60' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.75' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.025'/%3E%3C/svg%3E");
  pointer-events: none;
  z-index: 0;
}

/* ---------- HEADER / NAV ---------- */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--header-h);
  z-index: 1000;
  background: rgba(12, 14, 20, .82);
  backdrop-filter: blur(16px) saturate(180%);
  -webkit-backdrop-filter: blur(16px) saturate(180%);
  border-bottom: 1px solid var(--clr-border);
  transition: background var(--duration-med) ease;
}

[data-theme="light"] .site-header {
  background: rgba(245, 246, 250, .85);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--sp-sm);
  font-weight: 800;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
  z-index: 10;
}

.logo-icon {
  width: 36px; height: 36px;
  animation: logoSpin 20s linear infinite;
}

@keyframes logoSpin {
  to { transform: rotate(360deg); }
}

.logo span {
  background: linear-gradient(135deg, var(--clr-accent), var(--clr-pink));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.main-nav { display: flex; align-items: center; gap: var(--sp-md); }

.main-nav a {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--clr-text-muted);
  padding: var(--sp-xs) var(--sp-sm);
  border-radius: var(--radius-sm);
  transition: color var(--duration-fast), background var(--duration-fast);
}

.main-nav a:hover,
.main-nav a[aria-current="page"] {
  color: var(--clr-text);
  background: var(--clr-surface);
}

.nav-cta {
  font-size: 0.8125rem !important;
  font-weight: 600 !important;
  color: #fff !important;
  background: var(--clr-accent) !important;
  padding: var(--sp-sm) var(--sp-md) !important;
  border-radius: var(--radius-full) !important;
  transition: transform var(--duration-fast) var(--ease-spring), box-shadow var(--duration-fast) !important;
}

.nav-cta:hover {
  transform: translateY(-1px) scale(1.03);
  box-shadow: var(--shadow-glow);
  background: var(--clr-accent) !important;
}

.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px; height: 36px;
  border-radius: var(--radius-sm);
  color: var(--clr-text-muted);
  transition: color var(--duration-fast), background var(--duration-fast);
}

.theme-toggle:hover {
  color: var(--clr-text);
  background: var(--clr-surface);
}

.theme-toggle svg { width: 20px; height: 20px; }
.theme-toggle .icon-sun  { display: none; }
.theme-toggle .icon-moon { display: block; }
[data-theme="light"] .theme-toggle .icon-sun  { display: block; }
[data-theme="light"] .theme-toggle .icon-moon { display: none; }

/* Mobile Nav Toggle */
.nav-toggle {
  display: none;
  width: 36px; height: 36px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  z-index: 10;
}

.nav-toggle span {
  width: 22px; height: 2px;
  background: var(--clr-text);
  border-radius: 2px;
  transition: transform var(--duration-med) var(--ease-out-expo), opacity var(--duration-fast);
}

.nav-toggle.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- HERO SECTION ---------- */
.hero {
  position: relative;
  padding: calc(var(--header-h) + var(--sp-2xl)) 0 var(--sp-3xl);
  z-index: 1;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-3xl);
  align-items: center;
}

.hero-content { max-width: 560px; }

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-sm);
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--clr-accent);
  background: rgba(108,92,231,.12);
  border: 1px solid rgba(108,92,231,.2);
  padding: var(--sp-xs) var(--sp-md);
  border-radius: var(--radius-full);
  margin-bottom: var(--sp-lg);
  animation: fadeInUp 0.6s var(--ease-out-expo) both;
}

.hero-badge::before {
  content: '';
  width: 8px; height: 8px;
  background: var(--clr-lime);
  border-radius: 50%;
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: .5; transform: scale(.8); }
}

.hero h1 {
  font-size: clamp(2.25rem, 5vw, 3.75rem);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: -0.035em;
  margin-bottom: var(--sp-lg);
  animation: fadeInUp 0.6s 0.1s var(--ease-out-expo) both;
}

.hero h1 .gradient-text {
  background: linear-gradient(135deg, var(--clr-accent) 0%, var(--clr-pink) 50%, var(--clr-hot) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-desc {
  font-size: 1.125rem;
  color: var(--clr-text-muted);
  line-height: 1.7;
  margin-bottom: var(--sp-xl);
  max-width: 480px;
  animation: fadeInUp 0.6s 0.2s var(--ease-out-expo) both;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-md);
  animation: fadeInUp 0.6s 0.3s var(--ease-out-expo) both;
}

.hero-trust {
  display: flex;
  align-items: center;
  gap: var(--sp-md);
  margin-top: var(--sp-xl);
  animation: fadeInUp 0.6s 0.4s var(--ease-out-expo) both;
}

.hero-trust-stars {
  display: flex;
  gap: 2px;
  color: var(--clr-sun);
}

.hero-trust-text {
  font-size: 0.8125rem;
  color: var(--clr-text-dim);
}

.hero-trust-text strong {
  color: var(--clr-text-muted);
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ---------- BUTTONS ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-sm);
  font-weight: 600;
  font-size: 0.9375rem;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-full);
  transition: all var(--duration-fast) var(--ease-spring);
  white-space: nowrap;
}

.btn svg { width: 18px; height: 18px; flex-shrink: 0; }

.btn-primary {
  background: var(--clr-accent);
  color: #fff;
  box-shadow: 0 4px 16px var(--clr-accent-glow);
}

.btn-primary:hover {
  transform: translateY(-2px) scale(1.03);
  box-shadow: 0 8px 28px var(--clr-accent-glow);
}

.btn-secondary {
  background: var(--clr-surface);
  color: var(--clr-text);
  border: 1px solid var(--clr-border);
}

.btn-secondary:hover {
  background: var(--clr-surface-alt);
  transform: translateY(-1px);
}

.btn-ghost {
  color: var(--clr-text-muted);
  padding: 0.5rem 1rem;
}

.btn-ghost:hover { color: var(--clr-text); }

/* ---------- WHEEL AREA ---------- */
.wheel-area {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  animation: fadeInUp 0.6s 0.2s var(--ease-out-expo) both;
}

.wheel-wrapper {
  position: relative;
  width: 100%;
  max-width: 420px;
  aspect-ratio: 1;
}

/* Glow behind wheel */
.wheel-wrapper::before {
  content: '';
  position: absolute;
  inset: -20px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--clr-accent-glow) 0%, transparent 70%);
  opacity: 0;
  transition: opacity 0.5s;
  z-index: 0;
}

.wheel-wrapper.spinning::before { opacity: 1; }

.wheel-canvas {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  position: relative;
  z-index: 1;
  filter: drop-shadow(0 8px 32px rgba(0,0,0,.3));
  cursor: pointer;
}

/* Pointer / Ticker */
.wheel-pointer {
  position: absolute;
  top: -8px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  width: 32px;
  height: 40px;
  filter: drop-shadow(0 2px 6px rgba(0,0,0,.4));
}

.wheel-center-btn {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 3;
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: var(--clr-bg);
  border: 3px solid var(--clr-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--clr-accent);
  transition: all var(--duration-fast) var(--ease-spring);
  box-shadow: var(--shadow-md);
}

.wheel-center-btn:hover {
  transform: translate(-50%, -50%) scale(1.08);
  border-color: var(--clr-accent);
  box-shadow: var(--shadow-glow);
}

.wheel-center-btn.spinning {
  animation: centerPulse 0.6s ease-in-out infinite;
}

@keyframes centerPulse {
  0%, 100% { border-color: var(--clr-accent); }
  50% { border-color: var(--clr-pink); }
}

/* ---------- INPUT PANEL ---------- */
.input-panel {
  position: relative;
  z-index: 1;
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  padding: var(--sp-lg);
  margin-top: var(--sp-3xl);
  box-shadow: var(--shadow-md);
}

.input-panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--sp-md);
}

.input-panel-title {
  font-size: 0.875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--clr-text-muted);
}

.input-panel-count {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--clr-text-dim);
  background: var(--clr-bg);
  padding: 2px 10px;
  border-radius: var(--radius-full);
}

.name-input-wrap {
  display: flex;
  gap: var(--sp-sm);
  margin-bottom: var(--sp-md);
}

.name-input {
  flex: 1;
  background: var(--clr-bg);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-sm);
  padding: 0.625rem 0.875rem;
  font-family: var(--font-display);
  font-size: 0.9375rem;
  color: var(--clr-text);
  transition: border-color var(--duration-fast);
}

.name-input::placeholder { color: var(--clr-text-dim); }
.name-input:focus { outline: none; border-color: var(--clr-accent); }

.btn-add {
  flex-shrink: 0;
  background: var(--clr-accent);
  color: #fff;
  width: 42px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  font-weight: 700;
  transition: all var(--duration-fast) var(--ease-spring);
}

.btn-add:hover { transform: scale(1.06); }

.names-textarea {
  width: 100%;
  min-height: 100px;
  background: var(--clr-bg);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-sm);
  padding: 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  line-height: 1.8;
  color: var(--clr-text);
  resize: vertical;
  transition: border-color var(--duration-fast);
}

.names-textarea::placeholder { color: var(--clr-text-dim); }
.names-textarea:focus { outline: none; border-color: var(--clr-accent); }

.input-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-sm);
  margin-top: var(--sp-md);
}

.input-actions .btn {
  font-size: 0.8125rem;
  padding: 0.5rem 1rem;
}

/* ---------- WINNER MODAL ---------- */
.winner-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.65);
  backdrop-filter: blur(8px);
  z-index: 9998;
  display: none;
  align-items: center;
  justify-content: center;
  animation: fadeIn 0.3s ease;
}

.winner-overlay.active { display: flex; }

@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }

.winner-card {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-xl);
  padding: var(--sp-3xl) var(--sp-3xl);
  text-align: center;
  max-width: 420px;
  width: 90%;
  box-shadow: var(--shadow-lg);
  animation: winnerPop 0.4s var(--ease-spring);
}

@keyframes winnerPop {
  from { opacity: 0; transform: scale(0.85) translateY(30px); }
  to   { opacity: 1; transform: scale(1) translateY(0); }
}

.winner-label {
  font-size: 0.8125rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--clr-accent);
  margin-bottom: var(--sp-sm);
}

.winner-name {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 900;
  letter-spacing: -0.02em;
  margin-bottom: var(--sp-xl);
  background: linear-gradient(135deg, var(--clr-sun), var(--clr-hot));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.winner-actions {
  display: flex;
  gap: var(--sp-sm);
  justify-content: center;
}

/* ---------- CONFETTI CANVAS ---------- */
#confetti-canvas {
  position: fixed;
  inset: 0;
  z-index: 9999;
  pointer-events: none;
}

/* ---------- SECTION COMMONS ---------- */
.section {
  position: relative;
  z-index: 1;
  padding: var(--sp-4xl) 0;
}

.section-header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto var(--sp-3xl);
}

.section-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--clr-accent);
  margin-bottom: var(--sp-sm);
}

.section-title {
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.15;
  margin-bottom: var(--sp-md);
}

.section-desc {
  font-size: 1.0625rem;
  color: var(--clr-text-muted);
  line-height: 1.7;
}

/* ---------- WHEEL CATEGORIES (SUB-PAGES) ---------- */
.categories-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: var(--sp-lg);
}

.category-card {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  padding: var(--sp-xl);
  transition: all var(--duration-med) var(--ease-out-expo);
  display: flex;
  flex-direction: column;
  gap: var(--sp-md);
}

.category-card:hover {
  transform: translateY(-4px);
  border-color: var(--clr-accent);
  box-shadow: var(--shadow-glow);
}

.category-icon {
  width: 48px; height: 48px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
}

.category-card h3 {
  font-size: 1.0625rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.category-card p {
  font-size: 0.875rem;
  color: var(--clr-text-muted);
  line-height: 1.6;
  flex: 1;
}

.category-link {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--clr-accent);
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: gap var(--duration-fast);
}

.category-link:hover { gap: 8px; }

/* Category icon backgrounds */
.cat-edu  .category-icon { background: rgba(29,209,161,.12); color: var(--clr-lime); }
.cat-game .category-icon { background: rgba(108,92,231,.12); color: var(--clr-accent); }
.cat-food .category-icon { background: rgba(255,159,67,.12); color: var(--clr-sun); }
.cat-fun  .category-icon { background: rgba(243,104,224,.12); color: var(--clr-pink); }
.cat-baby .category-icon { background: rgba(84,160,255,.12); color: var(--clr-sky); }
.cat-team .category-icon { background: rgba(253,114,114,.12); color: var(--clr-hot); }

/* ---------- FEATURES ---------- */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--sp-lg);
}

.feature-card {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  padding: var(--sp-xl);
  transition: all var(--duration-med) var(--ease-out-expo);
}

.feature-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.feature-icon {
  width: 44px; height: 44px;
  border-radius: var(--radius-md);
  background: rgba(108,92,231,.1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  margin-bottom: var(--sp-md);
}

.feature-card h3 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: var(--sp-xs);
}

.feature-card p {
  font-size: 0.875rem;
  color: var(--clr-text-muted);
  line-height: 1.6;
}

/* ---------- HOW IT WORKS ---------- */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-xl);
  counter-reset: step;
}

.step-card {
  text-align: center;
  counter-increment: step;
}

.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px; height: 56px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--clr-accent), var(--clr-pink));
  color: #fff;
  font-weight: 800;
  font-size: 1.25rem;
  margin-bottom: var(--sp-md);
  box-shadow: 0 4px 20px var(--clr-accent-glow);
}

.step-card h3 {
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: var(--sp-sm);
}

.step-card p {
  font-size: 0.875rem;
  color: var(--clr-text-muted);
  line-height: 1.6;
}

/* ---------- USE CASES ---------- */
.usecases-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: var(--sp-lg);
}

.usecase-card {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  padding: var(--sp-xl) var(--sp-xl);
  display: flex;
  gap: var(--sp-md);
  transition: all var(--duration-med) var(--ease-out-expo);
}

.usecase-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.usecase-emoji {
  font-size: 1.75rem;
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--clr-bg);
  border-radius: var(--radius-md);
}

.usecase-card h3 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.usecase-card p {
  font-size: 0.8125rem;
  color: var(--clr-text-muted);
  line-height: 1.6;
}

/* ---------- FAQ ---------- */
.faq-list {
  max-width: 760px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: var(--sp-sm);
}

.faq-item {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.faq-q {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--sp-lg);
  font-size: 1rem;
  font-weight: 600;
  color: var(--clr-text);
  text-align: left;
  transition: background var(--duration-fast);
}

.faq-q:hover { background: var(--clr-surface-alt); }

.faq-q svg {
  width: 20px; height: 20px;
  flex-shrink: 0;
  color: var(--clr-text-dim);
  transition: transform var(--duration-med) var(--ease-out-expo);
}

.faq-item.open .faq-q svg { transform: rotate(180deg); }

.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--duration-med) var(--ease-out-expo);
}

.faq-a-inner {
  padding: 0 var(--sp-lg) var(--sp-lg);
  font-size: 0.9375rem;
  color: var(--clr-text-muted);
  line-height: 1.7;
}

/* ---------- CTA BANNER ---------- */
.cta-banner {
  position: relative;
  z-index: 1;
  padding: var(--sp-4xl) 0;
}

.cta-card {
  background: linear-gradient(135deg, var(--clr-accent) 0%, #8b5cf6 50%, var(--clr-pink) 100%);
  border-radius: var(--radius-xl);
  padding: var(--sp-4xl) var(--sp-3xl);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.65' numOctaves='3'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.08'/%3E%3C/svg%3E");
  pointer-events: none;
}

.cta-card h2 {
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  font-weight: 800;
  color: #fff;
  letter-spacing: -0.02em;
  margin-bottom: var(--sp-md);
  position: relative;
}

.cta-card p {
  font-size: 1.0625rem;
  color: rgba(255,255,255,.8);
  margin-bottom: var(--sp-xl);
  max-width: 520px;
  margin-left: auto;
  margin-right: auto;
  position: relative;
}

.cta-card .btn-primary {
  background: #fff;
  color: var(--clr-accent);
  box-shadow: 0 4px 20px rgba(0,0,0,.2);
  position: relative;
}

.cta-card .btn-primary:hover {
  box-shadow: 0 8px 32px rgba(0,0,0,.3);
}

/* ---------- FOOTER ---------- */
.site-footer {
  position: relative;
  z-index: 1;
  border-top: 1px solid var(--clr-border);
  padding: var(--sp-3xl) 0 var(--sp-xl);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr repeat(3, 1fr);
  gap: var(--sp-3xl);
  margin-bottom: var(--sp-3xl);
}

.footer-brand p {
  font-size: 0.875rem;
  color: var(--clr-text-muted);
  line-height: 1.7;
  margin-top: var(--sp-md);
  max-width: 280px;
}

.footer-col h4 {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--clr-text-dim);
  margin-bottom: var(--sp-md);
}

.footer-col ul { display: flex; flex-direction: column; gap: var(--sp-sm); }

.footer-col a {
  font-size: 0.875rem;
  color: var(--clr-text-muted);
  transition: color var(--duration-fast);
}

.footer-col a:hover { color: var(--clr-text); }

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--sp-xl);
  border-top: 1px solid var(--clr-border);
  font-size: 0.8125rem;
  color: var(--clr-text-dim);
}

.footer-socials {
  display: flex;
  gap: var(--sp-md);
}

.footer-socials a {
  color: var(--clr-text-dim);
  transition: color var(--duration-fast);
}

.footer-socials a:hover { color: var(--clr-text); }

/* ---------- SCROLL ANIMATIONS ---------- */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s var(--ease-out-expo), transform 0.6s var(--ease-out-expo);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- TOAST ---------- */
.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  color: var(--clr-text);
  padding: var(--sp-sm) var(--sp-lg);
  border-radius: var(--radius-full);
  font-size: 0.875rem;
  font-weight: 500;
  box-shadow: var(--shadow-lg);
  z-index: 9999;
  transition: transform 0.4s var(--ease-out-expo);
  pointer-events: none;
}

.toast.show {
  transform: translateX(-50%) translateY(0);
}

/* ---------- RESPONSIVE ---------- */
@media (max-width: 1024px) {
  .hero-grid { grid-template-columns: 1fr; text-align: center; }
  .hero-content { max-width: 100%; margin: 0 auto; }
  .hero-desc { margin-left: auto; margin-right: auto; }
  .hero-actions { justify-content: center; }
  .hero-trust { justify-content: center; }
  .wheel-area { margin-top: var(--sp-xl); }
  .wheel-wrapper { max-width: 340px; }
  .steps-grid { grid-template-columns: 1fr; gap: var(--sp-xl); }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  :root { --header-h: 56px; }

  .main-nav {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--sp-lg);
    background: var(--clr-bg);
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--duration-med);
    z-index: 5;
  }

  .main-nav.open {
    opacity: 1;
    pointer-events: auto;
  }

  .main-nav a { font-size: 1.125rem; }
  .nav-toggle { display: flex; }
  .categories-grid { grid-template-columns: 1fr; }
  .features-grid { grid-template-columns: 1fr; }
  .usecases-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: var(--sp-xl); }
  .footer-bottom { flex-direction: column; gap: var(--sp-md); text-align: center; }
  .input-panel { padding: var(--sp-md); }
  .wheel-wrapper { max-width: 300px; }
}

@media (max-width: 480px) {
  .hero h1 { font-size: 2rem; }
  .wheel-wrapper { max-width: 260px; }
  .wheel-center-btn { width: 56px; height: 56px; font-size: 0.625rem; }
}

/* ---------- BLOG STYLES ---------- */
.blog-hero {
  padding: calc(var(--header-h) + var(--sp-3xl)) 0 var(--sp-2xl);
  text-align: center;
}

.blog-hero-content {
  max-width: 720px;
  margin: 0 auto var(--sp-2xl);
}

.blog-hero-title {
  font-size: clamp(2.25rem, 5vw, 3.5rem);
  font-weight: 900;
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin-bottom: var(--sp-md);
  background: linear-gradient(135deg, var(--clr-accent) 0%, var(--clr-pink) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.blog-hero-desc {
  font-size: 1.125rem;
  color: var(--clr-text-muted);
  line-height: 1.7;
  max-width: 600px;
  margin: 0 auto;
}

/* Blog Category Filters */
.blog-filters {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-sm);
  justify-content: center;
  margin-bottom: var(--sp-2xl);
}

.blog-filter-pill {
  padding: var(--sp-xs) var(--sp-lg);
  border-radius: var(--radius-full);
  font-size: 0.875rem;
  font-weight: 600;
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  color: var(--clr-text-muted);
  transition: all var(--duration-fast) var(--ease-out-expo);
  cursor: pointer;
}

.blog-filter-pill:hover {
  color: var(--clr-text);
  border-color: var(--clr-accent);
}

.blog-filter-pill.active {
  background: var(--clr-accent);
  border-color: var(--clr-accent);
  color: #fff;
}

/* Blog Post Grid */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: var(--sp-xl);
  margin-bottom: var(--sp-3xl);
}

.blog-card {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  padding: var(--sp-xl);
  transition: all var(--duration-med) var(--ease-out-expo);
  display: flex;
  flex-direction: column;
  gap: var(--sp-md);
}

.blog-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--clr-accent);
}

.blog-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-md);
  flex-wrap: wrap;
}

.blog-category {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  white-space: nowrap;
}

.blog-category-teachers {
  background: rgba(84, 160, 255, 0.12);
  color: var(--clr-sky);
  border: 1px solid rgba(84, 160, 255, 0.2);
}

.blog-category-streamers {
  background: rgba(108, 92, 231, 0.12);
  color: var(--clr-accent);
  border: 1px solid rgba(108, 92, 231, 0.2);
}

.blog-category-tips {
  background: rgba(29, 209, 161, 0.12);
  color: var(--clr-lime);
  border: 1px solid rgba(29, 209, 161, 0.2);
}

.blog-category-updates {
  background: rgba(255, 159, 67, 0.12);
  color: var(--clr-sun);
  border: 1px solid rgba(255, 159, 67, 0.2);
}

.blog-meta {
  display: flex;
  align-items: center;
  gap: var(--sp-xs);
  font-size: 0.8125rem;
  color: var(--clr-text-dim);
}

.blog-divider {
  color: var(--clr-border);
}

.blog-card-title {
  font-size: 1.25rem;
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: -0.02em;
}

.blog-card-title a {
  color: var(--clr-text);
  transition: color var(--duration-fast);
}

.blog-card-title a:hover {
  color: var(--clr-accent);
}

.blog-card-excerpt {
  font-size: 0.9375rem;
  color: var(--clr-text-muted);
  line-height: 1.6;
  flex: 1;
}

.blog-card-link {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--clr-accent);
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: gap var(--duration-fast);
}

.blog-card-link:hover {
  gap: 8px;
}

/* Blog Pagination */
.blog-pagination {
  text-align: center;
  padding-top: var(--sp-lg);
  border-top: 1px solid var(--clr-border);
}

.blog-pagination-info {
  font-size: 0.875rem;
  color: var(--clr-text-dim);
}

/* ---------- PRINT ---------- */
@media print {
  .site-header, .site-footer, .wheel-area, .cta-banner, #confetti-canvas { display: none; }
  body { background: #fff; color: #000; }
}

/* ---------- BLOG RESPONSIVE ---------- */
@media (max-width: 768px) {
  .blog-grid {
    grid-template-columns: 1fr;
    gap: var(--sp-lg);
  }

  .blog-card {
    padding: var(--sp-lg);
  }

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

  .blog-filters {
    padding: 0 var(--sp-md);
  }
}

@media (max-width: 480px) {
  .blog-hero-title {
    font-size: 2rem;
  }

  .blog-hero-desc {
    font-size: 1rem;
  }

  .blog-card-title {
    font-size: 1.125rem;
  }
}
