/* ============================================
   DSInfra Marketing Site - Premium Enterprise SaaS
   Aesthetic: Refined minimalism with depth
   Inspiration: Stripe, Linear, Resend
   ============================================ */

/* CSS Custom Properties */
:root {
  /* Colors - Deep slate with electric accents */
  --color-bg: #0a0a0f;
  --color-bg-elevated: #12121a;
  --color-bg-card: #16161f;
  --color-bg-card-hover: #1a1a24;
  --color-surface: #1e1e28;

  --color-border: rgba(255, 255, 255, 0.08);
  --color-border-hover: rgba(255, 255, 255, 0.15);

  --color-text: #f4f4f5;
  --color-text-secondary: #a1a1aa;
  --color-text-tertiary: #71717a;

  --color-accent: #3b82f6;
  --color-accent-hover: #60a5fa;
  --color-accent-subtle: rgba(59, 130, 246, 0.15);

  --color-success: #22c55e;
  --color-warning: #f59e0b;

  /* Gradients */
  --gradient-hero: radial-gradient(ellipse 80% 50% at 50% -20%, rgba(59, 130, 246, 0.3), transparent),
                   radial-gradient(ellipse 60% 40% at 80% 50%, rgba(139, 92, 246, 0.15), transparent),
                   radial-gradient(ellipse 50% 30% at 20% 80%, rgba(6, 182, 212, 0.1), transparent);
  --gradient-card: linear-gradient(135deg, rgba(255,255,255,0.03) 0%, transparent 50%);
  --gradient-text: linear-gradient(135deg, #f4f4f5 0%, #a1a1aa 100%);
  --gradient-accent: linear-gradient(135deg, #3b82f6 0%, #8b5cf6 50%, #06b6d4 100%);

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

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

  /* Sizing */
  --container-max: 1200px;
  --container-narrow: 800px;

  /* Effects */
  --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: 0 0 40px rgba(59, 130, 246, 0.3);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 400ms ease;

  /* Border radius */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;
}

/* 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(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  overflow-x: hidden;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

h1 { font-size: clamp(2.5rem, 5vw, 4rem); }
h2 { font-size: clamp(2rem, 4vw, 3rem); }
h3 { font-size: clamp(1.5rem, 3vw, 2rem); }
h4 { font-size: 1.25rem; }

p {
  color: var(--color-text-secondary);
}

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-accent-hover);
}

/* Utility Classes */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.container--narrow {
  max-width: var(--container-narrow);
}

.text-gradient {
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.text-center { text-align: center; }
.text-secondary { color: var(--color-text-secondary); }
.text-tertiary { color: var(--color-text-tertiary); }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 0.75rem 1.5rem;
  font-size: 0.95rem;
  font-weight: 500;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  transition: all var(--transition-base);
  text-decoration: none;
}

.btn--primary {
  background: var(--color-accent);
  color: white;
  box-shadow: 0 0 20px rgba(59, 130, 246, 0.3);
}

.btn--primary:hover {
  background: var(--color-accent-hover);
  box-shadow: 0 0 30px rgba(59, 130, 246, 0.5);
  transform: translateY(-2px);
  color: white;
}

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

.btn--secondary:hover {
  background: var(--color-bg-card-hover);
  border-color: var(--color-border-hover);
  color: var(--color-text);
}

.btn--ghost {
  background: transparent;
  color: var(--color-text-secondary);
}

.btn--ghost:hover {
  color: var(--color-text);
  background: var(--color-bg-card);
}

.btn--large {
  padding: 1rem 2rem;
  font-size: 1rem;
}

/* ============================================
   Header / Navigation
   ============================================ */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: var(--space-md) 0;
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: -0.03em;
}

.logo:hover {
  color: var(--color-text);
}

.logo span {
  color: var(--color-accent);
}

.nav {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
}

.nav__links {
  display: flex;
  gap: var(--space-lg);
  list-style: none;
}

.nav__link {
  color: var(--color-text-secondary);
  font-size: 0.95rem;
  font-weight: 500;
  transition: color var(--transition-fast);
  position: relative;
}

.nav__link:hover {
  color: var(--color-text);
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-accent);
  transition: width var(--transition-base);
}

.nav__link:hover::after {
  width: 100%;
}

.nav__cta {
  display: flex;
  gap: var(--space-sm);
}

/* Mobile nav toggle */
.nav__toggle {
  display: none;
  background: none;
  border: none;
  color: var(--color-text);
  cursor: pointer;
  padding: var(--space-sm);
}

.nav__toggle svg {
  width: 24px;
  height: 24px;
}

@media (max-width: 768px) {
  .nav__links,
  .nav__cta {
    display: none;
  }

  .nav__toggle {
    display: block;
  }
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: var(--space-4xl) 0;
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
  background: var(--gradient-hero);
  opacity: 1;
}

.hero__bg::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg viewBox='0 0 400 400' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
  opacity: 0.03;
  pointer-events: none;
}

.hero__grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(59, 130, 246, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(59, 130, 246, 0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 50% at 50% 50%, black, transparent);
}

.hero__content {
  position: relative;
  text-align: center;
  max-width: 900px;
  margin: 0 auto;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-xs) var(--space-md);
  background: var(--color-accent-subtle);
  border: 1px solid rgba(59, 130, 246, 0.3);
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  color: var(--color-accent);
  margin-bottom: var(--space-xl);
  animation: fadeInUp 0.6s ease forwards;
}

.hero__badge::before {
  content: '';
  width: 6px;
  height: 6px;
  background: var(--color-accent);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

.hero__title {
  margin-bottom: var(--space-lg);
  animation: fadeInUp 0.6s ease 0.1s forwards;
  opacity: 0;
}

.hero__subtitle {
  font-size: 1.25rem;
  color: var(--color-text-secondary);
  max-width: 600px;
  margin: 0 auto var(--space-2xl);
  animation: fadeInUp 0.6s ease 0.2s forwards;
  opacity: 0;
}

.hero__cta {
  display: flex;
  gap: var(--space-md);
  justify-content: center;
  flex-wrap: wrap;
  animation: fadeInUp 0.6s ease 0.3s forwards;
  opacity: 0;
}

.hero__visual {
  position: relative;
  margin-top: var(--space-4xl);
  animation: fadeInUp 0.8s ease 0.4s forwards;
  opacity: 0;
}

.hero__visual-inner {
  position: relative;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-lg);
  box-shadow: var(--shadow-lg), var(--shadow-glow);
  overflow: hidden;
}

.hero__visual-inner::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(59, 130, 246, 0.5), transparent);
}

/* Dashboard mockup */
.dashboard-mock {
  display: grid;
  gap: var(--space-md);
}

.dashboard-mock__header {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding-bottom: var(--space-md);
  border-bottom: 1px solid var(--color-border);
}

.dashboard-mock__dots {
  display: flex;
  gap: 6px;
}

.dashboard-mock__dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--color-surface);
}

.dashboard-mock__dot--red { background: #ef4444; }
.dashboard-mock__dot--yellow { background: #f59e0b; }
.dashboard-mock__dot--green { background: #22c55e; }

.dashboard-mock__title {
  font-size: 0.85rem;
  color: var(--color-text-tertiary);
}

.dashboard-mock__content {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
}

.dashboard-mock__stat {
  background: var(--color-surface);
  padding: var(--space-lg);
  border-radius: var(--radius-md);
}

.dashboard-mock__stat-label {
  font-size: 0.8rem;
  color: var(--color-text-tertiary);
  margin-bottom: var(--space-xs);
}

.dashboard-mock__stat-value {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--color-text);
}

.dashboard-mock__stat-change {
  font-size: 0.8rem;
  color: var(--color-success);
  margin-top: var(--space-xs);
}

@media (max-width: 768px) {
  .dashboard-mock__content {
    grid-template-columns: 1fr;
  }
}

/* ============================================
   Features Section
   ============================================ */
.features {
  padding: var(--space-4xl) 0;
  position: relative;
}

.features__header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto var(--space-3xl);
}

.features__header h2 {
  margin-bottom: var(--space-md);
}

.features__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-lg);
}

.feature-card {
  position: relative;
  background: var(--color-bg-card);
  background-image: var(--gradient-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  transition: all var(--transition-base);
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-border-hover), transparent);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.feature-card:hover {
  border-color: var(--color-border-hover);
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.feature-card:hover::before {
  opacity: 1;
}

.feature-card__icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-accent-subtle);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-lg);
  color: var(--color-accent);
}

.feature-card__icon svg {
  width: 24px;
  height: 24px;
}

.feature-card__title {
  font-size: 1.125rem;
  margin-bottom: var(--space-sm);
  color: var(--color-text);
}

.feature-card__description {
  font-size: 0.95rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

/* ============================================
   How It Works Section
   ============================================ */
.how-it-works {
  padding: var(--space-4xl) 0;
  background: var(--color-bg-elevated);
}

.how-it-works__header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto var(--space-3xl);
}

.how-it-works__tabs {
  display: flex;
  justify-content: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-3xl);
}

.tab-btn {
  padding: 0.75rem 1.5rem;
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  color: var(--color-text-secondary);
  font-size: 0.95rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-base);
}

.tab-btn:hover {
  border-color: var(--color-border-hover);
  color: var(--color-text);
}

.tab-btn--active {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: white;
}

.steps {
  display: grid;
  gap: var(--space-xl);
  max-width: 900px;
  margin: 0 auto;
}

.step {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--space-xl);
  align-items: start;
}

.step__number {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-accent);
  border-radius: var(--radius-md);
  font-size: 1.25rem;
  font-weight: 700;
  color: white;
  flex-shrink: 0;
}

.step__content {
  padding-bottom: var(--space-xl);
  border-bottom: 1px solid var(--color-border);
}

.step:last-child .step__content {
  border-bottom: none;
  padding-bottom: 0;
}

.step__title {
  font-size: 1.25rem;
  margin-bottom: var(--space-sm);
  color: var(--color-text);
}

.step__description {
  color: var(--color-text-secondary);
  line-height: 1.7;
}

/* ============================================
   Integrations Section
   ============================================ */
.integrations {
  padding: var(--space-4xl) 0;
}

.integrations__header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto var(--space-3xl);
}

.integrations__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-lg);
  max-width: 1000px;
  margin: 0 auto;
}

.integration-card {
  position: relative;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  text-align: center;
  transition: all var(--transition-base);
}

.integration-card:hover {
  border-color: var(--color-border-hover);
  transform: translateY(-4px);
}

.integration-card--coming-soon {
  opacity: 0.6;
}

.integration-card__badge {
  position: absolute;
  top: var(--space-md);
  right: var(--space-md);
  padding: var(--space-xs) var(--space-sm);
  background: var(--color-warning);
  color: #000;
  font-size: 0.7rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  text-transform: uppercase;
}

.integration-card__logo {
  width: 64px;
  height: 64px;
  margin: 0 auto var(--space-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-surface);
  border-radius: var(--radius-md);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-text);
}

.integration-card__name {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: var(--space-sm);
  color: var(--color-text);
}

.integration-card__description {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
}

/* ============================================
   Pricing Section
   ============================================ */
.pricing {
  padding: var(--space-4xl) 0;
  background: var(--color-bg-elevated);
}

.pricing__header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto var(--space-2xl);
}

.pricing__toggle {
  display: flex;
  justify-content: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-3xl);
}

.pricing__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-lg);
  max-width: 1200px;
  margin: 0 auto;
}

.pricing-card {
  position: relative;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  transition: all var(--transition-base);
}

.pricing-card:hover {
  border-color: var(--color-border-hover);
}

.pricing-card--featured {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-glow);
}

.pricing-card--featured::before {
  content: 'Most Popular';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translate(-50%, -50%);
  padding: var(--space-xs) var(--space-md);
  background: var(--gradient-accent);
  color: white;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  text-transform: uppercase;
}

.pricing-card__name {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: var(--space-sm);
  color: var(--color-text);
}

.pricing-card__description {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-lg);
}

.pricing-card__price {
  margin-bottom: var(--space-lg);
}

.pricing-card__amount {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--color-text);
}

.pricing-card__period {
  font-size: 0.9rem;
  color: var(--color-text-tertiary);
}

.pricing-card__fee {
  display: inline-block;
  padding: var(--space-xs) var(--space-sm);
  background: var(--color-accent-subtle);
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  color: var(--color-accent);
  margin-bottom: var(--space-lg);
}

.pricing-card__features {
  list-style: none;
  margin-bottom: var(--space-xl);
}

.pricing-card__feature {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  padding: var(--space-sm) 0;
  font-size: 0.9rem;
  color: var(--color-text-secondary);
}

.pricing-card__feature::before {
  content: '';
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  background: var(--color-success);
  mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20' fill='currentColor'%3E%3Cpath fill-rule='evenodd' d='M16.707 5.293a1 1 0 010 1.414l-8 8a1 1 0 01-1.414 0l-4-4a1 1 0 011.414-1.414L8 12.586l7.293-7.293a1 1 0 011.414 0z' clip-rule='evenodd'/%3E%3C/svg%3E") center / contain no-repeat;
}

.pricing-card__cta {
  width: 100%;
}

/* ============================================
   Security Section
   ============================================ */
.security {
  padding: var(--space-4xl) 0;
}

.security__header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto var(--space-3xl);
}

.security__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-lg);
}

.security-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  transition: all var(--transition-base);
}

.security-card:hover {
  border-color: var(--color-border-hover);
}

.security-card__icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(34, 197, 94, 0.15);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-lg);
  color: var(--color-success);
}

.security-card__icon svg {
  width: 24px;
  height: 24px;
}

.security-card__title {
  font-size: 1.125rem;
  margin-bottom: var(--space-sm);
  color: var(--color-text);
}

.security-card__description {
  font-size: 0.95rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

/* ============================================
   CTA Section
   ============================================ */
.cta {
  padding: var(--space-4xl) 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta__bg {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 60% 50% at 50% 50%, rgba(59, 130, 246, 0.15), transparent);
}

.cta__content {
  position: relative;
  max-width: 700px;
  margin: 0 auto;
}

.cta h2 {
  margin-bottom: var(--space-md);
}

.cta p {
  font-size: 1.125rem;
  margin-bottom: var(--space-2xl);
}

.cta__buttons {
  display: flex;
  gap: var(--space-md);
  justify-content: center;
  flex-wrap: wrap;
}

/* ============================================
   Footer
   ============================================ */
.footer {
  background: var(--color-bg-elevated);
  border-top: 1px solid var(--color-border);
  padding: var(--space-3xl) 0 var(--space-xl);
}

.footer__grid {
  display: grid;
  grid-template-columns: 2fr repeat(3, 1fr);
  gap: var(--space-2xl);
  margin-bottom: var(--space-2xl);
}

@media (max-width: 768px) {
  .footer__grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 480px) {
  .footer__grid {
    grid-template-columns: 1fr;
  }
}

.footer__brand {
  max-width: 300px;
}

.footer__brand .logo {
  margin-bottom: var(--space-md);
  display: inline-block;
}

.footer__brand p {
  font-size: 0.9rem;
  line-height: 1.7;
}

.footer__column h4 {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-lg);
}

.footer__links {
  list-style: none;
}

.footer__links li {
  margin-bottom: var(--space-sm);
}

.footer__links a {
  color: var(--color-text-secondary);
  font-size: 0.9rem;
  transition: color var(--transition-fast);
}

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

.footer__legal {
  padding-top: var(--space-xl);
  border-top: 1px solid var(--color-border);
  font-size: 0.8rem;
  color: var(--color-text-tertiary);
  line-height: 1.8;
}

.footer__legal p {
  color: var(--color-text-tertiary);
}

.footer__bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-md);
  margin-top: var(--space-lg);
}

.footer__copyright {
  font-size: 0.85rem;
  color: var(--color-text-tertiary);
}

/* ============================================
   FAQ Section
   ============================================ */
.faq {
  padding: var(--space-4xl) 0;
}

.faq__header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto var(--space-3xl);
}

.faq__list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  border-bottom: 1px solid var(--color-border);
}

.faq-item__question {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-lg) 0;
  background: none;
  border: none;
  color: var(--color-text);
  font-size: 1rem;
  font-weight: 500;
  text-align: left;
  cursor: pointer;
  transition: color var(--transition-fast);
}

.faq-item__question:hover {
  color: var(--color-accent);
}

.faq-item__icon {
  width: 24px;
  height: 24px;
  color: var(--color-text-tertiary);
  transition: transform var(--transition-base);
}

.faq-item--open .faq-item__icon {
  transform: rotate(45deg);
}

.faq-item__answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-base);
}

.faq-item--open .faq-item__answer {
  max-height: 500px;
}

.faq-item__answer p {
  padding-bottom: var(--space-lg);
  line-height: 1.7;
}

/* ============================================
   Contact Section
   ============================================ */
.contact {
  padding: var(--space-4xl) 0;
}

.contact__header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto var(--space-3xl);
}

.contact__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-lg);
  max-width: 900px;
  margin: 0 auto;
}

.contact-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  text-align: center;
  transition: all var(--transition-base);
}

.contact-card:hover {
  border-color: var(--color-border-hover);
}

.contact-card__icon {
  width: 48px;
  height: 48px;
  margin: 0 auto var(--space-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-accent-subtle);
  border-radius: var(--radius-md);
  color: var(--color-accent);
}

.contact-card__icon svg {
  width: 24px;
  height: 24px;
}

.contact-card__title {
  font-size: 1.125rem;
  margin-bottom: var(--space-sm);
  color: var(--color-text);
}

.contact-card__description {
  font-size: 0.95rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-md);
}

.contact-card__link {
  font-weight: 500;
}

/* ============================================
   Legal Pages
   ============================================ */
.legal {
  padding: calc(80px + var(--space-3xl)) 0 var(--space-4xl);
}

.legal__header {
  margin-bottom: var(--space-3xl);
}

.legal__header h1 {
  margin-bottom: var(--space-sm);
}

.legal__updated {
  color: var(--color-text-tertiary);
  font-size: 0.9rem;
}

.legal__content {
  max-width: var(--container-narrow);
}

.legal__content h2 {
  font-size: 1.5rem !important;
  margin-top: var(--space-3xl);
  margin-bottom: var(--space-md);
  color: var(--color-text);
}

.legal__content h3 {
  font-size: 1.1rem !important;
  margin-top: var(--space-lg);
  margin-bottom: var(--space-sm);
  color: var(--color-text-secondary);
  font-weight: 600;
}

.legal__content p {
  margin-bottom: var(--space-md);
  line-height: 1.8;
}

.legal__content ul {
  margin-bottom: var(--space-md);
  padding-left: var(--space-xl);
}

.legal__content li {
  margin-bottom: var(--space-sm);
  color: var(--color-text-secondary);
  line-height: 1.7;
}

.legal__content strong {
  color: var(--color-text);
}

.legal__content a {
  color: var(--color-accent);
}

/* ============================================
   Page Headers (for inner pages)
   ============================================ */
.page-header {
  padding: calc(80px + var(--space-4xl)) 0 var(--space-3xl);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.page-header__bg {
  position: absolute;
  inset: 0;
  background: var(--gradient-hero);
  opacity: 0.5;
}

.page-header__content {
  position: relative;
  max-width: 700px;
  margin: 0 auto;
}

.page-header h1 {
  margin-bottom: var(--space-md);
}

.page-header p {
  font-size: 1.125rem;
}

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

@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}

@keyframes float {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-10px);
  }
}

/* Scroll animations */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.6s ease;
}

.animate-on-scroll.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger children animations */
.stagger-children > * {
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.4s ease;
}

.stagger-children.is-visible > *:nth-child(1) { transition-delay: 0.1s; opacity: 1; transform: translateY(0); }
.stagger-children.is-visible > *:nth-child(2) { transition-delay: 0.2s; opacity: 1; transform: translateY(0); }
.stagger-children.is-visible > *:nth-child(3) { transition-delay: 0.3s; opacity: 1; transform: translateY(0); }
.stagger-children.is-visible > *:nth-child(4) { transition-delay: 0.4s; opacity: 1; transform: translateY(0); }
.stagger-children.is-visible > *:nth-child(5) { transition-delay: 0.5s; opacity: 1; transform: translateY(0); }
.stagger-children.is-visible > *:nth-child(6) { transition-delay: 0.6s; opacity: 1; transform: translateY(0); }

/* ============================================
   Tally Form Styling
   ============================================ */
.waitlist__form iframe {
  color-scheme: dark;
}

/* ============================================
   Responsive Utilities
   ============================================ */
@media (max-width: 768px) {
  :root {
    --space-4xl: 4rem;
    --space-3xl: 3rem;
  }

  .hero {
    min-height: auto;
    padding-top: calc(80px + var(--space-3xl));
  }

  .hero__visual {
    margin-top: var(--space-2xl);
  }

  .step {
    gap: var(--space-md);
  }

  .step__number {
    width: 36px;
    height: 36px;
    font-size: 0.9rem;
    margin-top: 2px;
  }

  .feature-card {
    display: grid;
    grid-template-columns: auto 1fr;
    grid-template-rows: auto auto;
    gap: 0 var(--space-md);
  }

  .feature-card__icon {
    width: 36px;
    height: 36px;
    margin-bottom: 0;
    grid-row: 1 / 3;
    align-self: center;
  }

  .feature-card__icon svg {
    width: 18px;
    height: 18px;
  }

  .feature-card__title {
    grid-column: 2;
    grid-row: 1;
  }

  .feature-card__description {
    grid-column: 2;
    grid-row: 2;
  }
}