/* ============================================================
   LAYOUT.CSS — Grid, Sections, Containers, Section Separators
   Mothrills 3D Studio
   ============================================================ */

/* ── Container ── */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--space-8);
}

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

/* ── Section base ── */
.section {
  padding-block: var(--space-32);
  position: relative;
  overflow: hidden;
}

.section--sm  { padding-block: var(--space-20); }
.section--lg  { padding-block: 160px; }
.section--flush { padding-block: 0; overflow: visible; }

/* ════════════════════════════════════════════════════════════
   SECTION LIGHT SEPARATION
   Each section has a unique ambient light falloff so sections
   feel distinct without changing the base dark background.
   ════════════════════════════════════════════════════════════ */

/* Faint top-center spotlight — used on most content sections */
.section--lit::before {
  content: '';
  position: absolute;
  top: -120px;
  left: 50%;
  transform: translateX(-50%);
  width: 1000px;
  height: 600px;
  background: radial-gradient(
    ellipse at top,
    rgba(79, 172, 254, 0.055) 0%,
    transparent 65%
  );
  pointer-events: none;
  z-index: 0;
}

/* Bottom fade-out into the next section */
.section--lit::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 200px;
  background: linear-gradient(to bottom, transparent, var(--bg));
  pointer-events: none;
  z-index: 0;
}

/* Left-leaning light (for alternating feel) */
.section--lit-left::before {
  content: '';
  position: absolute;
  top: 0;
  left: -200px;
  width: 900px;
  height: 700px;
  background: radial-gradient(
    ellipse at top left,
    rgba(79, 172, 254, 0.045) 0%,
    transparent 60%
  );
  pointer-events: none;
  z-index: 0;
}

/* Right-leaning light */
.section--lit-right::before {
  content: '';
  position: absolute;
  top: 0;
  right: -200px;
  width: 900px;
  height: 700px;
  background: radial-gradient(
    ellipse at top right,
    rgba(79, 172, 254, 0.045) 0%,
    transparent 60%
  );
  pointer-events: none;
  z-index: 0;
}

/* Darker inset surface — for contrast sections */
.section--inset {
  background: linear-gradient(
    to bottom,
    var(--bg) 0%,
    var(--bg-raised) 30%,
    var(--bg-raised) 70%,
    var(--bg) 100%
  );
}

.section--inset::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(
    ellipse 80% 60% at 50% 30%,
    rgba(79, 172, 254, 0.04) 0%,
    transparent 70%
  );
  pointer-events: none;
  z-index: 0;
}

/* Ensure content sits above pseudo-elements */
.section > .container,
.section > .section-inner {
  position: relative;
  z-index: 1;
}

/* Hairline separator at section edge */
.section-rule {
  width: 100%;
  height: 1px;
  background: linear-gradient(
    to right,
    transparent 0%,
    var(--border) 20%,
    var(--border) 80%,
    transparent 100%
  );
  border: none;
  margin: 0;
}

/* ── Section Header ── */
.section-header { margin-bottom: var(--space-16); }

.section-header--center {
  text-align: center;
  max-width: 640px;
  margin-inline: auto;
  margin-bottom: var(--space-16);
}

.section-label {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: var(--space-4);
}

.section-label::before {
  content: '';
  display: inline-block;
  width: 16px;
  height: 1px;
  background: var(--accent);
  box-shadow: var(--neon-sm);
}

.section-title { margin-bottom: var(--space-4); }

.section-subtitle {
  font-size: var(--text-lg);
  color: var(--text-secondary);
  max-width: 560px;
  line-height: 1.65;
}

.section-header--center .section-subtitle { margin-inline: auto; }

/* ── Glow line ── */
.glow-line {
  width: 40px;
  height: 1px;
  background: linear-gradient(to right, var(--accent), transparent);
  box-shadow: var(--neon-sm);
  margin-bottom: var(--space-6);
}

.glow-line--center { margin-inline: auto; }

/* ── Grid ── */
.grid { display: grid; gap: var(--space-8); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid--gap-sm  { gap: var(--space-4); }
.grid--gap-md  { gap: var(--space-6); }
.grid--gap-lg  { gap: var(--space-12); }

/* ── Split ── */
.split          { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-16); align-items: center; }
.split--60-40   { grid-template-columns: 3fr 2fr; }
.split--40-60   { grid-template-columns: 2fr 3fr; }

/* ── Flex utils ── */
.flex          { display: flex; }
.flex-center   { display: flex; align-items: center; justify-content: center; }
.flex-between  { display: flex; align-items: center; justify-content: space-between; }
.flex-col      { display: flex; flex-direction: column; }
.gap-2  { gap: var(--space-2); }
.gap-4  { gap: var(--space-4); }
.gap-6  { gap: var(--space-6); }
.gap-8  { gap: var(--space-8); }

/* ── Media helpers ── */
.media-full    { width: 100%; aspect-ratio: 16/9; overflow: hidden; position: relative; }
.media-full img,
.media-full video { width: 100%; height: 100%; object-fit: cover; }

/* ── Sticky nav offset ── */
.page-body { padding-top: 72px; }

/* ── Responsive ── */
@media (max-width: 1024px) {
  :root {
    --text-6xl: 3.75rem;
    --text-5xl: 3rem;
    --text-4xl: 2.25rem;
  }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .section { padding-block: var(--space-20); }
  .section--lg { padding-block: 100px; }
}

@media (max-width: 768px) {
  :root {
    --text-7xl: 3.5rem;
    --text-6xl: 2.75rem;
    --text-5xl: 2.25rem;
    --text-4xl: 1.875rem;
    --text-3xl: 1.5rem;
  }
  .container { padding-inline: var(--space-5); }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .split, .split--60-40, .split--40-60 { grid-template-columns: 1fr; gap: var(--space-10); }
  .section { padding-block: var(--space-16); }
  .section--lg { padding-block: 80px; }
}