/* ========================================
   Dialed GG — Color Memory Game
   Style inspired by autoresearch.lol
   ======================================== */

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

:root {
  --bg: #fafaf9;
  --bg-dark: #111;
  --bg-alt: #f5f5f4;
  --text: #1a1a1a;
  --text-secondary: #6b7280;
  --text-muted: #9ca3af;
  --border: #e5e7eb;
  --accent: #4ECDC4;
  --accent-dark: #3dbdb5;
  --red: #FF6B6B;
  --yellow: #FFD93D;
  --purple: #6C5CE7;
  --orange: #FF8A5C;
  --card-bg: #fff;
  --radius: 12px;
  --radius-sm: 8px;
  --max-width: 720px;
  --max-width-wide: 900px;
  --font: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
  --font-mono: 'SF Mono', 'SFMono-Regular', 'Fira Code', monospace;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
}

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

img {
  max-width: 100%;
  display: block;
}

/* --- Navigation --- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(250, 250, 249, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  max-width: var(--max-width-wide);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}

.logo-link {
  display: flex;
  align-items: center;
}

.logo {
  height: 28px;
  width: auto;
}

.nav-links {
  display: flex;
  gap: 24px;
}

.nav-links a {
  font-size: 0.875rem;
  color: var(--text-secondary);
  transition: color 0.2s;
}

.nav-links a:hover {
  color: var(--text);
}

/* --- Hero Section --- */
.hero {
  padding: 140px 24px 80px;
  max-width: var(--max-width);
  margin: 0 auto;
  text-align: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--text-secondary);
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 100px;
  padding: 6px 14px;
  margin-bottom: 24px;
}

.hero-title {
  font-size: 2.4rem;
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.03em;
  margin-bottom: 20px;
}

.hero-title-word {
  display: inline;
}

.hero-title-word.accent {
  color: var(--accent-dark);
}

.hero-title-divider {
  color: var(--text-muted);
  font-weight: 300;
  margin: 0 6px;
}

.hero-subtitle {
  font-size: 1.1rem;
  color: var(--text-secondary);
  line-height: 1.7;
  max-width: 560px;
  margin: 0 auto 32px;
}

.hero-actions {
  display: flex;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.95rem;
  font-weight: 500;
  padding: 12px 28px;
  border-radius: var(--radius-sm);
  transition: all 0.2s;
  cursor: pointer;
  border: none;
  font-family: inherit;
}

.btn-primary {
  background: var(--text);
  color: #fff;
}

.btn-primary:hover {
  background: #333;
  transform: translateY(-1px);
}

.btn-primary svg {
  transition: transform 0.2s;
}

.btn-primary:hover svg {
  transform: translateX(3px);
}

.hero-stats {
  display: flex;
  justify-content: center;
  gap: 40px;
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid var(--border);
}

.stat {
  text-align: center;
}

.stat-value {
  display: block;
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.stat-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 2px;
}

/* --- Sections --- */
.section {
  padding: 80px 24px;
  max-width: var(--max-width);
  margin: 0 auto;
}

.section-dark {
  background: var(--text);
  color: #fff;
  max-width: 100%;
  padding: 80px 24px;
}

.section-dark .section-desc {
  color: rgba(255, 255, 255, 0.6);
}

.section-dark .section-label {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.15);
  color: rgba(255, 255, 255, 0.7);
}

.section-alt {
  background: var(--bg-alt);
  max-width: 100%;
  padding: 80px 24px;
}

.section-cta {
  text-align: center;
  padding: 100px 24px;
}

.section-label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--text-secondary);
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 100px;
  padding: 6px 14px;
  margin-bottom: 16px;
}

.section-title {
  font-size: 1.8rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.3;
  margin-bottom: 16px;
}

.section-desc {
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 48px;
  max-width: 600px;
}

.section-dark .section-title {
  color: #fff;
}

.section-alt .section-title {
  max-width: 600px;
}

/* --- Cards Grid --- */
.cards-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  transition: box-shadow 0.2s, transform 0.2s;
}

.card:hover {
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
  transform: translateY(-2px);
}

.card-icon {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-alt);
  border-radius: var(--radius-sm);
  margin-bottom: 16px;
  color: var(--accent-dark);
}

.card h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 8px;
  line-height: 1.4;
}

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

/* --- Steps --- */
.steps {
  max-width: 560px;
  margin: 0 auto;
}

.step {
  display: flex;
  gap: 20px;
  padding: 24px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.step:last-child {
  border-bottom: none;
}

.step-number {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--accent);
  font-family: var(--font-mono);
  min-width: 32px;
  padding-top: 2px;
}

.step-content h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 6px;
}

.step-content p {
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.6);
  line-height: 1.6;
}

/* --- Insights Grid --- */
.insights-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.insight-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
}

.insight-icon {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent-dark);
  background: rgba(78, 205, 196, 0.1);
  display: inline-flex;
  align-items: center;
  padding: 4px 10px;
  border-radius: 6px;
  margin-bottom: 14px;
}

.insight-card h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 8px;
}

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

/* --- Feature Blocks --- */
.feature-block {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  margin-bottom: 16px;
}

.feature-block-content h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 10px;
}

.feature-block-content p {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 12px;
}

.feature-block-content p:last-child {
  margin-bottom: 0;
}

/* --- FAQ --- */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.faq-item {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 16px 20px;
  background: var(--card-bg);
  border: none;
  cursor: pointer;
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text);
  text-align: left;
  transition: background 0.2s;
}

.faq-question:hover {
  background: var(--bg-alt);
}

.faq-chevron {
  flex-shrink: 0;
  transition: transform 0.3s;
  color: var(--text-muted);
}

.faq-question[aria-expanded="true"] .faq-chevron {
  transform: rotate(180deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
  padding: 0 20px;
  background: var(--card-bg);
}

.faq-answer.open {
  max-height: 300px;
  padding: 0 20px 16px;
}

.faq-answer p {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* --- CTA --- */
.cta-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--text-secondary);
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 100px;
  padding: 6px 14px;
  margin-bottom: 16px;
}

/* --- Footer --- */
.footer {
  border-top: 1px solid var(--border);
  padding: 24px;
}

.footer-inner {
  max-width: var(--max-width-wide);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.footer-left {
  display: flex;
  align-items: center;
  gap: 12px;
}

.footer-logo {
  height: 20px;
  width: auto;
}

.footer-tagline {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.footer-right {
  display: flex;
  align-items: center;
  gap: 20px;
}

.footer-right a {
  font-size: 0.85rem;
  color: var(--text-secondary);
  transition: color 0.2s;
}

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

.footer-text {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* --- Responsive --- */
@media (max-width: 640px) {
  .hero {
    padding: 120px 20px 60px;
  }

  .hero-title {
    font-size: 1.6rem;
  }

  .hero-subtitle {
    font-size: 0.95rem;
  }

  .hero-stats {
    gap: 24px;
  }

  .nav-links {
    display: none;
  }

  .section {
    padding: 60px 20px;
  }

  .section-dark {
    padding: 60px 20px;
  }

  .section-title {
    font-size: 1.4rem;
  }

  .cards-grid {
    grid-template-columns: 1fr;
  }

  .insights-grid {
    grid-template-columns: 1fr;
  }

  .footer-inner {
    flex-direction: column;
    gap: 16px;
    text-align: center;
  }
}