/* ============================================================
   ChipPilot – Premium Design System
   ============================================================ */

/* ---------- CSS Custom Properties (Dark Theme) ---------- */
:root {
  --bg-primary: #0a0e27;
  --bg-secondary: #0f1538;
  --bg-tertiary: #141b45;
  --bg-card: rgba(15, 21, 56, 0.65);
  --bg-glass: rgba(255, 255, 255, 0.04);
  --bg-glass-hover: rgba(255, 255, 255, 0.08);

  --accent-blue: #3b82f6;
  --accent-blue-light: #60a5fa;
  --accent-purple: #8b5cf6;
  --accent-purple-light: #a78bfa;
  --accent-cyan: #22d3ee;
  --accent-green: #34d399;
  --accent-pink: #f472b6;
  --accent-orange: #fb923c;

  --gradient-primary: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
  --gradient-accent: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue));
  --gradient-warm: linear-gradient(135deg, var(--accent-purple), var(--accent-pink));
  --gradient-bg: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);

  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-tertiary: #64748b;
  --text-link: var(--accent-blue-light);

  --border-subtle: rgba(255, 255, 255, 0.06);
  --border-light: rgba(255, 255, 255, 0.1);
  --border-focus: var(--accent-blue);

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.5);
  --shadow-glow-blue: 0 0 40px rgba(59, 130, 246, 0.15);
  --shadow-glow-purple: 0 0 40px rgba(139, 92, 246, 0.15);

  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 400ms cubic-bezier(0.4, 0, 0.2, 1);

  --container-max: 1200px;
  --nav-height: 72px;
}

/* ---------- Light Theme Override ---------- */
[data-theme="light"] {
  --bg-primary: #f8fafc;
  --bg-secondary: #f1f5f9;
  --bg-tertiary: #e2e8f0;
  --bg-card: rgba(255, 255, 255, 0.8);
  --bg-glass: rgba(255, 255, 255, 0.6);
  --bg-glass-hover: rgba(255, 255, 255, 0.8);
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-tertiary: #94a3b8;
  --border-subtle: rgba(0, 0, 0, 0.06);
  --border-light: rgba(0, 0, 0, 0.1);
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.12);
  --shadow-glow-blue: 0 0 40px rgba(59, 130, 246, 0.1);
  --shadow-glow-purple: 0 0 40px rgba(139, 92, 246, 0.1);
}

/* ---------- Reset & Base ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }
body {
  font-family: var(--font-sans);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}
a { color: var(--text-link); text-decoration: none; transition: color var(--transition-fast); }
a:hover { color: var(--accent-blue); }
img, svg { max-width: 100%; display: block; }
ul, ol { list-style: none; }

/* ---------- Custom Scrollbar ---------- */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb { background: var(--bg-tertiary); border-radius: var(--radius-full); }
::-webkit-scrollbar-thumb:hover { background: var(--accent-blue); }

/* ---------- Typography ---------- */
h1, h2, h3, h4, h5, h6 { font-weight: 700; line-height: 1.2; letter-spacing: -0.02em; color: var(--text-primary); }
h1 { font-size: clamp(2.4rem, 5vw, 4rem); }
h2 { font-size: clamp(1.8rem, 3.5vw, 2.8rem); }
h3 { font-size: clamp(1.2rem, 2vw, 1.5rem); }
p { color: var(--text-secondary); }

.gradient-text {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.gradient-text-alt {
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.section-label {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent-blue);
  margin-bottom: 0.75rem;
}
.section-heading {
  margin-bottom: 1rem;
}
.section-sub {
  max-width: 600px;
  margin: 0 auto 3rem;
  font-size: 1.1rem;
  color: var(--text-secondary);
}

/* ---------- Layout ---------- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 1.5rem;
}
section {
  padding: 6rem 0;
  position: relative;
}
.text-center { text-align: center; }

/* ---------- Grid ---------- */
.grid { display: grid; gap: 1.5rem; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.75rem;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 600;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-base);
  text-decoration: none;
  white-space: nowrap;
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }

.btn-primary {
  background: var(--gradient-primary);
  color: #fff;
  box-shadow: var(--shadow-md), var(--shadow-glow-blue);
}
.btn-primary:hover {
  box-shadow: var(--shadow-lg), 0 0 60px rgba(59, 130, 246, 0.25);
  color: #fff;
}
.btn-secondary {
  background: var(--bg-glass);
  color: var(--text-primary);
  border: 1px solid var(--border-light);
  backdrop-filter: blur(12px);
}
.btn-secondary:hover {
  background: var(--bg-glass-hover);
  border-color: var(--accent-blue);
  color: var(--text-primary);
}
.btn-outline {
  background: transparent;
  color: var(--accent-blue);
  border: 1px solid var(--accent-blue);
}
.btn-outline:hover {
  background: rgba(59, 130, 246, 0.1);
  color: var(--accent-blue);
}
.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
}
.btn-ghost:hover { color: var(--text-primary); }
.btn-lg { padding: 1rem 2.25rem; font-size: 1.05rem; border-radius: var(--radius-lg); }
.btn-sm { padding: 0.5rem 1.25rem; font-size: 0.85rem; }
.btn-icon {
  width: 40px;
  height: 40px;
  padding: 0;
  border-radius: var(--radius-md);
  font-size: 1.1rem;
}

/* ---------- Navigation ---------- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  display: flex;
  align-items: center;
  z-index: 1000;
  transition: background var(--transition-base), box-shadow var(--transition-base);
}
.navbar.scrolled {
  background: rgba(10, 14, 39, 0.85);
  backdrop-filter: blur(20px);
  box-shadow: 0 1px 0 var(--border-subtle);
}
[data-theme="light"] .navbar.scrolled {
  background: rgba(248, 250, 252, 0.85);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 1.5rem;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--text-primary);
}
.nav-logo:hover { color: var(--text-primary); }
.nav-logo img, .nav-logo svg { height: 32px; width: auto; }
.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
}
.nav-links a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color var(--transition-fast);
}
.nav-links a:hover { color: var(--text-primary); }
.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.nav-hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all var(--transition-base);
}
.nav-hamburger.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-hamburger.active span:nth-child(2) { opacity: 0; }
.nav-hamburger.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
@media (max-width: 768px) {
  .nav-links, .nav-actions .btn { display: none; }
  .nav-hamburger { display: flex; }
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-subtle);
    padding: 1.5rem;
    gap: 1rem;
  }
  [data-theme="light"] .nav-links.open {
    background: var(--bg-secondary);
  }
}

/* ---------- Theme Toggle ---------- */
.theme-toggle {
  background: var(--bg-glass);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 1rem;
  transition: all var(--transition-fast);
}
.theme-toggle:hover { color: var(--text-primary); border-color: var(--border-light); }

/* ---------- Hero Section ---------- */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding-top: var(--nav-height);
}
.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  opacity: 0.35;
}
.hero-bg svg { width: 100%; height: 100%; }
.hero-glow {
  position: absolute;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.15;
  pointer-events: none;
}
.hero-glow-1 { background: var(--accent-blue); top: -100px; right: -100px; }
.hero-glow-2 { background: var(--accent-purple); bottom: -200px; left: -100px; }
.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--bg-glass);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-full);
  padding: 0.4rem 1.2rem;
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  backdrop-filter: blur(12px);
}
.hero-badge .dot {
  width: 6px;
  height: 6px;
  background: var(--accent-green);
  border-radius: 50%;
  animation: pulse-dot 2s infinite;
}
@keyframes pulse-dot {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}
.hero h1 { margin-bottom: 1.5rem; }
.hero p {
  font-size: 1.2rem;
  max-width: 600px;
  margin: 0 auto 2.5rem;
}
.hero-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}
.hero-code {
  margin-top: 3.5rem;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  text-align: left;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-secondary);
  backdrop-filter: blur(12px);
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
  position: relative;
  overflow: hidden;
}
.hero-code::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--gradient-primary);
}
.hero-code .prompt { color: var(--accent-green); }
.hero-code .flag { color: var(--accent-purple); }
.hero-code .arg { color: var(--accent-blue-light); }

/* ---------- Floating chip animation ---------- */
.floating-chips {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
  z-index: 0;
}
.chip-particle {
  position: absolute;
  width: 4px;
  height: 4px;
  background: var(--accent-blue);
  border-radius: 50%;
  opacity: 0;
  animation: float-chip linear infinite;
}
@keyframes float-chip {
  0% { opacity: 0; transform: translateY(100vh) scale(0); }
  10% { opacity: 0.6; }
  90% { opacity: 0.6; }
  100% { opacity: 0; transform: translateY(-10vh) scale(1); }
}

/* ---------- Glass Card ---------- */
.glass-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 2rem;
  backdrop-filter: blur(12px);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}
.glass-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border-light), transparent);
  opacity: 0;
  transition: opacity var(--transition-base);
}
.glass-card:hover {
  border-color: var(--border-light);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}
.glass-card:hover::before { opacity: 1; }

/* ---------- Feature Cards ---------- */
.feature-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  margin-bottom: 1.25rem;
  background: var(--bg-glass);
  border: 1px solid var(--border-subtle);
}
.feature-icon.blue { color: var(--accent-blue); }
.feature-icon.purple { color: var(--accent-purple); }
.feature-icon.cyan { color: var(--accent-cyan); }
.feature-icon.green { color: var(--accent-green); }
.feature-icon.pink { color: var(--accent-pink); }
.feature-icon.orange { color: var(--accent-orange); }
.feature-card h3 { margin-bottom: 0.75rem; font-size: 1.15rem; }
.feature-card p { font-size: 0.95rem; }

/* ---------- How it Works ---------- */
.steps { display: flex; gap: 2rem; justify-content: center; flex-wrap: wrap; }
.step {
  flex: 1;
  min-width: 260px;
  max-width: 340px;
  text-align: center;
  padding: 2rem;
}
.step-number {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--gradient-primary);
  color: #fff;
  font-weight: 700;
  font-size: 1.3rem;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.25rem;
}
.step h3 { margin-bottom: 0.75rem; }
.step p { font-size: 0.95rem; }
.step-connector {
  display: flex;
  align-items: center;
  color: var(--text-tertiary);
  font-size: 1.5rem;
  padding-top: 1rem;
}
@media (max-width: 768px) {
  .step-connector { display: none; }
}

/* ---------- Architecture ---------- */
.architecture-diagram {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 2rem;
  margin-top: 2rem;
  overflow-x: auto;
}
.architecture-diagram svg {
  width: 100%;
  max-width: 900px;
  margin: 0 auto;
  display: block;
}

/* ---------- Testimonials ---------- */
.testimonials-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
@media (max-width: 1024px) { .testimonials-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .testimonials-grid { grid-template-columns: 1fr; } }
.testimonial-card {
  padding: 2rem;
}
.testimonial-card .quote {
  font-size: 1rem;
  font-style: italic;
  margin-bottom: 1.5rem;
  color: var(--text-secondary);
  line-height: 1.7;
}
.testimonial-card .author {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.testimonial-card .avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.9rem;
  color: #fff;
}
.testimonial-card .author-info .name {
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--text-primary);
}
.testimonial-card .author-info .role {
  font-size: 0.8rem;
  color: var(--text-tertiary);
}

/* ---------- Pricing ---------- */
.pricing-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 3rem;
}
.pricing-toggle span { font-size: 0.95rem; color: var(--text-secondary); }
.pricing-toggle span.active { color: var(--text-primary); font-weight: 600; }
.toggle-switch {
  width: 48px;
  height: 26px;
  background: var(--bg-tertiary);
  border-radius: var(--radius-full);
  cursor: pointer;
  position: relative;
  border: 1px solid var(--border-light);
  transition: background var(--transition-fast);
}
.toggle-switch::after {
  content: '';
  position: absolute;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--accent-blue);
  top: 2px;
  left: 2px;
  transition: transform var(--transition-fast);
}
.toggle-switch.active { background: rgba(59, 130, 246, 0.2); }
.toggle-switch.active::after { transform: translateX(22px); }
.pricing-save {
  background: rgba(52, 211, 153, 0.15);
  color: var(--accent-green);
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-full);
}
.pricing-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  align-items: start;
}
@media (max-width: 900px) { .pricing-cards { grid-template-columns: 1fr; max-width: 420px; margin: 0 auto; } }
.pricing-card {
  padding: 2.5rem 2rem;
  text-align: center;
}
.pricing-card.featured {
  border-color: var(--accent-blue);
  box-shadow: var(--shadow-glow-blue);
}
.pricing-card.featured::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--gradient-primary);
  opacity: 1;
}
.pricing-badge {
  display: inline-block;
  background: var(--gradient-primary);
  color: #fff;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-full);
  margin-bottom: 1rem;
}
.pricing-card .plan-name {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}
.pricing-card .price {
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: 0.25rem;
}
.pricing-card .price span { font-size: 1rem; font-weight: 400; color: var(--text-tertiary); }
.pricing-card .price-desc {
  font-size: 0.85rem;
  color: var(--text-tertiary);
  margin-bottom: 2rem;
}
.pricing-card .features-list {
  text-align: left;
  margin-bottom: 2rem;
}
.pricing-card .features-list li {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  padding: 0.5rem 0;
  font-size: 0.9rem;
  color: var(--text-secondary);
}
.pricing-card .features-list li .check {
  color: var(--accent-green);
  font-weight: 700;
  flex-shrink: 0;
  margin-top: 2px;
}
.pricing-card .btn { width: 100%; }

/* ---------- CTA Section ---------- */
.cta-section {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
}
.cta-box {
  text-align: center;
  max-width: 600px;
  margin: 0 auto;
}
.cta-box h2 { margin-bottom: 1rem; }
.cta-box p { margin-bottom: 2rem; }
.cta-box .hero-actions { justify-content: center; }

/* ---------- Footer ---------- */
.footer {
  padding: 4rem 0 2rem;
  border-top: 1px solid var(--border-subtle);
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 2rem;
  margin-bottom: 3rem;
}
@media (max-width: 768px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 480px) {
  .footer-grid { grid-template-columns: 1fr; }
}
.footer-brand p { margin-top: 1rem; font-size: 0.9rem; max-width: 280px; }
.footer-col h4 {
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-tertiary);
  margin-bottom: 1rem;
}
.footer-col a {
  display: block;
  font-size: 0.9rem;
  color: var(--text-secondary);
  padding: 0.3rem 0;
}
.footer-col a:hover { color: var(--text-primary); }
.footer-newsletter {
  margin-top: 1rem;
}
.footer-newsletter .input-group {
  display: flex;
  gap: 0.5rem;
}
.footer-newsletter input {
  flex: 1;
  min-width: 0;
}
.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--border-subtle);
  padding-top: 2rem;
  font-size: 0.85rem;
  color: var(--text-tertiary);
  flex-wrap: wrap;
  gap: 1rem;
}
.footer-socials {
  display: flex;
  gap: 0.75rem;
}
.footer-socials a {
  color: var(--text-tertiary);
  font-size: 1.1rem;
}
.footer-socials a:hover { color: var(--text-primary); }

/* ---------- Forms ---------- */
.form-group {
  margin-bottom: 1.25rem;
}
.form-label {
  display: block;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 0.4rem;
}
.form-input {
  width: 100%;
  padding: 0.7rem 1rem;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  background: var(--bg-glass);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  outline: none;
}
.form-input::placeholder { color: var(--text-tertiary); }
.form-input:focus {
  border-color: var(--accent-blue);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}
.form-input.error {
  border-color: #ef4444;
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.15);
}
.form-error {
  font-size: 0.8rem;
  color: #ef4444;
  margin-top: 0.3rem;
  display: none;
}
.form-error.visible { display: block; }
.form-checkbox {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  font-size: 0.9rem;
  color: var(--text-secondary);
}
.form-checkbox input {
  margin-top: 4px;
  accent-color: var(--accent-blue);
}
.form-divider {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin: 1.5rem 0;
  color: var(--text-tertiary);
  font-size: 0.85rem;
}
.form-divider::before, .form-divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border-subtle);
}
select.form-input {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 2.5rem;
}

/* ---------- Auth Pages ---------- */
.auth-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  position: relative;
  overflow: hidden;
}
.auth-card {
  width: 100%;
  max-width: 440px;
  padding: 2.5rem;
  position: relative;
  z-index: 1;
}
.auth-header {
  text-align: center;
  margin-bottom: 2rem;
}
.auth-header h1 { font-size: 1.6rem; margin-bottom: 0.5rem; }
.auth-header p { font-size: 0.95rem; }
.auth-footer {
  text-align: center;
  margin-top: 1.5rem;
  font-size: 0.9rem;
  color: var(--text-secondary);
}
.social-btn {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  padding: 0.7rem 1rem;
  background: var(--bg-glass);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
  font-family: var(--font-sans);
  margin-bottom: 0.75rem;
}
.social-btn:hover {
  background: var(--bg-glass-hover);
  border-color: var(--accent-blue);
}
.social-btn svg { width: 20px; height: 20px; }

/* ---------- Dashboard ---------- */
.dashboard-layout {
  min-height: 100vh;
  padding-top: var(--nav-height);
}
.dashboard-hero {
  padding: 3rem 0;
  border-bottom: 1px solid var(--border-subtle);
}
.dashboard-hero h1 { font-size: 1.8rem; margin-bottom: 0.5rem; }
.dashboard-content { padding: 3rem 0; }
.quick-start-steps { counter-reset: qs; }
.quick-start-step {
  display: flex;
  gap: 1.5rem;
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--border-subtle);
}
.quick-start-step:last-child { border-bottom: none; }
.qs-number {
  counter-increment: qs;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--gradient-primary);
  color: #fff;
  font-weight: 700;
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.qs-content h3 { font-size: 1.05rem; margin-bottom: 0.4rem; }
.qs-content p { font-size: 0.9rem; margin-bottom: 0.75rem; }
.code-block {
  background: var(--bg-primary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 0.75rem 1rem;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--accent-green);
  overflow-x: auto;
}
.stat-cards { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; margin-bottom: 2rem; }
@media (max-width: 768px) { .stat-cards { grid-template-columns: repeat(2, 1fr); } }
.stat-card {
  padding: 1.5rem;
}
.stat-card .stat-value {
  font-size: 1.8rem;
  font-weight: 800;
  margin-bottom: 0.25rem;
}
.stat-card .stat-label {
  font-size: 0.85rem;
  color: var(--text-tertiary);
}

/* ---------- Docs Page ---------- */
.docs-layout { padding-top: calc(var(--nav-height) + 2rem); min-height: 100vh; }
.docs-search {
  max-width: 600px;
  margin: 0 auto 3rem;
  position: relative;
}
.docs-search input {
  width: 100%;
  padding: 0.9rem 1rem 0.9rem 2.8rem;
  font-size: 1rem;
}
.docs-search .search-icon {
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-tertiary);
}
.docs-category { margin-bottom: 2.5rem; }
.docs-category h2 {
  font-size: 1.2rem;
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border-subtle);
}
.docs-links a {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.6rem 0.75rem;
  border-radius: var(--radius-md);
  font-size: 0.95rem;
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}
.docs-links a:hover {
  background: var(--bg-glass);
  color: var(--text-primary);
}
.docs-links a .icon { opacity: 0.6; }

/* ---------- Comparison Table ---------- */
.comparison-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 2rem;
  font-size: 0.9rem;
}
.comparison-table th, .comparison-table td {
  padding: 0.9rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--border-subtle);
}
.comparison-table th {
  font-weight: 600;
  color: var(--text-primary);
  background: var(--bg-glass);
}
.comparison-table td { color: var(--text-secondary); }
.comparison-table .check-cell { text-align: center; }
.comparison-table .check-cell .yes { color: var(--accent-green); font-weight: 700; }
.comparison-table .check-cell .no { color: var(--text-tertiary); }

/* ---------- FAQ ---------- */
.faq-list { max-width: 700px; margin: 0 auto; }
.faq-item {
  border-bottom: 1px solid var(--border-subtle);
}
.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: none;
  border: none;
  padding: 1.25rem 0;
  font-family: var(--font-sans);
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  cursor: pointer;
  text-align: left;
}
.faq-question .icon {
  font-size: 1.2rem;
  color: var(--text-tertiary);
  transition: transform var(--transition-fast);
}
.faq-item.open .faq-question .icon { transform: rotate(45deg); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-slow);
}
.faq-answer p {
  padding-bottom: 1.25rem;
  font-size: 0.95rem;
  line-height: 1.7;
}
.faq-item.open .faq-answer { max-height: 300px; }

/* ---------- Scroll Animations ---------- */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s cubic-bezier(0.4, 0, 0.2, 1), transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }
.reveal-delay-5 { transition-delay: 0.5s; }

/* ---------- Background animation ---------- */
@keyframes gradient-shift {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}
.animated-gradient {
  background-size: 200% 200%;
  animation: gradient-shift 8s ease infinite;
}

/* ---------- Utility ---------- */
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }
.hidden { display: none !important; }