/* ==========================================================================
   Layout — containers, sections, page heroes and ambient backgrounds.
   ========================================================================== */

.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

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

/* ---- Section ------------------------------------------------------------ */

.section {
  position: relative;
  padding-block: var(--section-y);
}

.section--tight  { padding-block: calc(var(--section-y) * 0.55); }
.section--muted  { background: var(--bg-raised); border-block: 1px solid var(--border); }
.section--sunken { background: var(--bg-sunken); border-block: 1px solid var(--border); }

/* Top hairline with gradient fade */
.section--lined::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border-strong) 30%, var(--border-strong) 70%, transparent);
}

.section__header {
  max-width: 46rem;
  display: grid;
  gap: var(--space-4);
  margin-bottom: clamp(2.5rem, 2rem + 3vw, 4.5rem);
}

.section__header--center {
  margin-inline: auto;
  text-align: center;
  justify-items: center;
}

.section__title {
  font-size: var(--text-3xl);
}

.section__intro {
  color: var(--text-muted);
  font-size: var(--text-lg);
  line-height: var(--leading-snug);
}

/* ---- Page hero (inner pages) --------------------------------------------- */

.page-hero {
  position: relative;
  padding-block: clamp(6rem, 5rem + 6vw, 9.5rem) clamp(3.5rem, 3rem + 4vw, 6rem);
  overflow: hidden;
}

.page-hero__inner {
  position: relative;
  display: grid;
  gap: var(--space-5);
  max-width: 52rem;
}

.page-hero__inner--center {
  margin-inline: auto;
  text-align: center;
  justify-items: center;
}

.page-hero__title {
  font-size: var(--text-4xl);
  max-width: 22ch;
}

.page-hero__inner--center .page-hero__title { margin-inline: auto; }

.page-hero__lead {
  font-size: var(--text-lg);
  color: var(--text-muted);
  line-height: var(--leading-snug);
  max-width: 58ch;
}

/* ---- Ambient background effects ------------------------------------------ */

.bg-grid {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 56px 56px;
  -webkit-mask-image: radial-gradient(ellipse 90% 70% at 50% 0%, black 30%, transparent 75%);
  mask-image: radial-gradient(ellipse 90% 70% at 50% 0%, black 30%, transparent 75%);
  opacity: 0.5;
}

.bg-glow {
  position: absolute;
  pointer-events: none;
  border-radius: 50%;
  filter: blur(90px);
}

.bg-glow--brand {
  width: min(52rem, 90vw);
  height: 26rem;
  left: 50%;
  top: -12rem;
  transform: translateX(-50%);
  background:
    radial-gradient(closest-side, var(--glow-1), transparent 70%),
    radial-gradient(closest-side, var(--glow-2), transparent 70%);
  background-position: 30% 0, 75% 20%;
  background-size: 70% 100%, 60% 100%;
  background-repeat: no-repeat;
}

/* ---- Two column split ---------------------------------------------------- */

.split {
  display: grid;
  gap: clamp(2.5rem, 2rem + 4vw, 5.5rem);
  align-items: start;
}

@media (min-width: 62rem) {
  .split--2 { grid-template-columns: 1fr 1fr; }
  .split--3-2 { grid-template-columns: 3fr 2fr; }
  .split--2-3 { grid-template-columns: 2fr 3fr; }
  .split--sticky > * { position: sticky; top: 7rem; }
}

/* ---- Stacks -------------------------------------------------------------- */

.stack    { display: grid; gap: var(--space-5); }
.stack--sm { gap: var(--space-3); }
.stack--lg { gap: var(--space-7); }

/* ---- Icon chip ------------------------------------------------------------ */

.icon {
  width: 1.25em;
  height: 1.25em;
  flex: none;
}

.chip {
  display: inline-grid;
  place-items: center;
  width: 2.6rem;
  height: 2.6rem;
  border-radius: var(--radius-md);
  background: var(--gradient-brand-soft);
  border: 1px solid var(--border-accent);
  color: var(--accent-strong);
  font-size: 1.15rem;
}

.chip--lg { width: 3.2rem; height: 3.2rem; font-size: 1.4rem; }

/* ---- Status dot ----------------------------------------------------------- */

.dot {
  display: inline-block;
  width: 0.5rem;
  height: 0.5rem;
  border-radius: var(--radius-full);
  background: var(--success);
  box-shadow: 0 0 0 3px rgba(52, 211, 153, 0.15);
}

.dot--accent { background: var(--accent); box-shadow: 0 0 0 3px rgba(111, 151, 255, 0.15); }
.dot--warn   { background: var(--warning); box-shadow: 0 0 0 3px rgba(251, 191, 36, 0.15); }

/* ---- Badge ---------------------------------------------------------------- */

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.32rem 0.85rem;
  border-radius: var(--radius-full);
  border: 1px solid var(--border-strong);
  background: var(--surface);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--text-muted);
  backdrop-filter: blur(8px);
}

.badge--accent {
  border-color: var(--border-accent);
  background: var(--gradient-brand-soft);
  color: var(--accent-strong);
}

/* ---- Glass panel ----------------------------------------------------------- */

.glass {
  background: var(--glass);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}