/* =============================================================
   LAYOUT.CSS — Containers, grids, section rhythm
   ============================================================= */

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

.container--wide { max-width: 1440px; }
.container--narrow { max-width: 860px; }

.section { padding-block: var(--section-pad); position: relative; }
.section--tight { padding-block: calc(var(--section-pad) * 0.55); }
.section--alt { background: var(--surface); }

.section-header {
  max-width: 46rem;
  margin-bottom: clamp(2.5rem, 2rem + 2vw, 4rem);
}

.section-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.6em;
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent-cyan);
  margin-bottom: var(--sp-sm);
}
.section-eyebrow::before {
  content: "";
  width: 22px;
  height: 1px;
  background: currentColor;
}

.section-title {
  font-size: var(--fs-2xl);
  margin-bottom: var(--sp-sm);
}

.section-subtitle {
  font-size: var(--fs-md);
  color: var(--text-dim);
  line-height: var(--lh-relaxed);
  max-width: 42rem;
}

.section-header--center {
  margin-inline: auto;
  text-align: center;
}
.section-header--center .section-eyebrow::before { display: none; }
.section-header--center .section-subtitle { margin-inline: auto; }

/* ─── Grids ────────────────────────────────────────────────── */
.grid { display: grid; gap: var(--sp-md); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-auto { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }

@media (max-width: 900px) {
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
}

/* ─── Perspective wrappers for 3D tilt cards ─────────────── */
.tilt-perspective { perspective: 1200px; }
[data-tilt] {
  transform-style: preserve-3d;
  will-change: transform;
  transition: transform var(--dur-base) var(--ease-out), box-shadow var(--dur-base) var(--ease-out);
}

.reveal-fade {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.8s var(--ease-out), transform 0.8s var(--ease-out);
}
.reveal-fade.is-visible { opacity: 1; transform: translateY(0); }

@media (prefers-reduced-motion: reduce) {
  .reveal-fade { opacity: 1; transform: none; transition: none; }
}

.hide-mobile { display: none; }
@media (min-width: 640px) { .hide-mobile { display: inline; } }