/* ==========================================================================
   layout.css - page shell, containers, section rhythm and grids
   ========================================================================== */

.page {
  background: var(--color-bg);
  color: var(--color-text);
  min-height: 100vh;
  overflow-x: hidden;
  position: relative;
}

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

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

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

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

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

/* --- sections ------------------------------------------------------------- */
.section {
  padding: var(--space-8) var(--gutter);
}

.section--hero {
  position: relative;
  padding: 160px var(--gutter) var(--space-8);
  overflow: hidden;
}

.section--features {
  padding: var(--space-9) var(--gutter);
}

.section--flush-top {
  padding-top: 0;
}

.section--washed {
  background: var(--gradient-section-wash);
  position: relative;
}

.section--panelled {
  background: var(--color-bg);
  position: relative;
  overflow: hidden;
}

.section-head {
  text-align: center;
  max-width: var(--container-xs);
  margin: 0 auto var(--space-7);
}

.section-head--narrow {
  max-width: 640px;
}

.section-head--wide {
  max-width: 680px;
}

.section-head--tight {
  margin-bottom: var(--space-6);
}

.section-body {
  position: relative;
}

/* --- decorative backdrops -------------------------------------------------- */
.decor {
  position: absolute;
  inset: 0;
  z-index: var(--z-decor);
  pointer-events: none;
}

.decor--grid {
  background-image: var(--grid-line-faint);
  background-size: 64px 64px;
  animation: gridMove 8s linear infinite;
  -webkit-mask-image: radial-gradient(ellipse 70% 55% at 50% 20%, black 0%, transparent 75%);
  mask-image: radial-gradient(ellipse 70% 55% at 50% 20%, black 0%, transparent 75%);
}

.decor--grid-panel {
  background-image: var(--grid-line-strong);
  background-size: 56px 56px;
  -webkit-mask-image: radial-gradient(ellipse 60% 80% at 50% 50%, black 0%, transparent 80%);
  mask-image: radial-gradient(ellipse 60% 80% at 50% 50%, black 0%, transparent 80%);
}

.decor--grid-panel-soft {
  background-image: var(--grid-line-medium);
}

.decor--grid-light {
  background-image: var(--grid-line-light);
  background-size: 48px 48px;
  animation: gridMove 10s linear infinite;
}

.decor--blob-a {
  position: absolute;
  inset: auto;
  top: -130px;
  right: -120px;
  width: 480px;
  height: 480px;
  border-radius: var(--radius-circle);
  background: var(--gradient-blob-primary);
  filter: blur(6px);
  animation: blobMove1 9s ease-in-out infinite;
}

.decor--blob-b {
  position: absolute;
  inset: auto;
  bottom: -160px;
  left: -140px;
  width: 420px;
  height: 420px;
  border-radius: var(--radius-circle);
  background: var(--gradient-blob-sky);
  filter: blur(6px);
  animation: blobMove2 11s ease-in-out infinite;
}

.decor--halo {
  background: var(--gradient-halo);
}

.decor--halo-story {
  background: var(--gradient-halo-story);
}

/* --- grids ---------------------------------------------------------------- */
.hero-grid {
  position: relative;
  z-index: var(--z-content);
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: var(--space-7);
  /* start, not center: the aside grows when the generated link appears and
     centering would shift the whole hero every time */
  align-items: start;
}

.hero-grid__aside {
  position: relative;
}

.card-grid {
  display: grid;
  gap: var(--space-4);
}

.card-grid--280 {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.card-grid--260 {
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.card-grid--240 {
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.card-grid--220 {
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.card-grid--180 {
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
}

.step-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--space-5);
  position: relative;
}

.stack {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.stack--lg {
  gap: var(--space-5);
}

.story-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: var(--space-7);
  align-items: center;
}

/* --- footer layout --------------------------------------------------------- */
.footer-grid {
  max-width: var(--container-wide);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.4fr repeat(3, 1fr);
  gap: var(--space-6);
  padding-bottom: var(--space-6);
  border-bottom: 1px solid var(--color-border-invert);
}

.footer-bottom {
  max-width: var(--container-wide);
  margin: 0 auto;
  padding-top: var(--space-5);
}

/* --- responsive ------------------------------------------------------------ */
@media (max-width: 900px) {
  .hero-grid {
    grid-template-columns: 1fr;
  }

  .hero-grid__main {
    text-align: center;
  }

  .hero-grid__main .hero-stats,
  .hero-grid__main .hero-actions {
    justify-content: center;
  }

  .hero-grid__main .hero-lead {
    margin-left: auto;
    margin-right: auto;
  }

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

@media (max-width: 860px) {
  .section--hero {
    padding-top: 120px;
  }
}

@media (max-width: 640px) {
  .section,
  .section--features {
    padding-top: var(--space-6);
    padding-bottom: var(--space-6);
  }

  .section--flush-top {
    padding-top: 0;
  }

  .section--hero {
    padding-top: 104px;
    padding-bottom: var(--space-6);
  }

  .section-head {
    margin-bottom: var(--space-6);
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--space-5);
  }

  .hero-grid,
  .story-grid {
    gap: var(--space-6);
  }
}