/* ============================================================
   Base — Reset, Typography, Layout Scaffolding
   ============================================================ */

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: var(--font-sans);
  font-size: var(--text-base);
  font-weight: var(--font-weight-normal);
  line-height: var(--line-height-normal);
  color: var(--color-text-primary);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  padding-bottom: 120px;
}

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

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

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

/* ============================================================
   Container
   ============================================================ */

.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

/* ============================================================
   Section wrapper
   ============================================================ */

.section {
  padding: var(--section-gap) 0;
}

.section-header {
  margin-bottom: var(--space-12);
  text-align: center;
}

.section-label {
  display: none;
  font-size: var(--text-xs);
  font-weight: var(--font-weight-semibold);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-accent);
  background: var(--color-accent-light);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-pill);
  margin-bottom: var(--space-4);
}

.section-title {
  font-size: var(--text-3xl);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  color: var(--color-text-primary);
  margin-bottom: var(--space-3);
}

.section-subtitle {
  font-size: var(--text-lg);
  color: var(--color-text-secondary);
  line-height: var(--line-height-normal);
  max-width: 540px;
  margin: 0 auto;
}

/* ============================================================
   Scroll Animations
   ============================================================ */

[data-animate] {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

[data-animate].is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Staggered delay support */
[data-animate][data-delay="1"] { transition-delay: 0.05s; }
[data-animate][data-delay="2"] { transition-delay: 0.10s; }
[data-animate][data-delay="3"] { transition-delay: 0.15s; }
[data-animate][data-delay="4"] { transition-delay: 0.20s; }
[data-animate][data-delay="5"] { transition-delay: 0.25s; }
[data-animate][data-delay="6"] { transition-delay: 0.30s; }
[data-animate][data-delay="7"] { transition-delay: 0.35s; }
[data-animate][data-delay="8"] { transition-delay: 0.40s; }
[data-animate][data-delay="9"] { transition-delay: 0.45s; }
[data-animate][data-delay="10"] { transition-delay: 0.50s; }
[data-animate][data-delay="11"] { transition-delay: 0.55s; }
[data-animate][data-delay="12"] { transition-delay: 0.60s; }
[data-animate][data-delay="13"] { transition-delay: 0.65s; }
[data-animate][data-delay="14"] { transition-delay: 0.70s; }

/* ============================================================
   Divider
   ============================================================ */

.section-divider {
  width: 100%;
  height: 1px;
  background: var(--color-border-light);
}

/* ============================================================
   Responsive breakpoints
   ============================================================ */

@media (max-width: 1024px) {
  :root {
    --container-padding: var(--space-6);
    --section-gap: 5rem;
  }
}

@media (max-width: 768px) {
  :root {
    --container-padding: var(--space-4);
    --section-gap: 3.5rem;
  }

  .section-title {
    font-size: var(--text-2xl);
  }
}