/* ============================================================
   ADAMS OMONDI — LAYOUT PRIMITIVES
   Sections · Grids · Stacks · Page shell
   ============================================================ */

/* ---------- Page shell ---------- */
.page {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  isolation: isolate;
}

main { flex: 1; display: block; }

/* ---------- Sections ---------- */
.section {
  position: relative;
  padding-block: clamp(4rem, 9vw, 8rem);
}
.section--sm { padding-block: clamp(2.5rem, 5vw, 4.5rem); }
.section--lg { padding-block: clamp(5rem, 11vw, 10rem); }
.section--flush { padding-block: 0; }

.section__header {
  text-align: center;
  max-width: 780px;
  margin-inline: auto;
  margin-bottom: clamp(2.5rem, 5vw, 4rem);
}
.section__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--brand-primary);
  padding: 0.4rem 0.85rem;
  border: 1px solid var(--border-default);
  border-radius: var(--radius-full);
  background: var(--glass-bg);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  margin-bottom: 1.25rem;
}
.section__eyebrow::before {
  content: '';
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--brand-primary);
  box-shadow: 0 0 10px var(--brand-primary);
}
.section__title {
  margin-bottom: 1rem;
}
.section__title .gradient {
  background: var(--gradient-text);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}
.section__subtitle {
  font-size: clamp(1rem, 1.6vw, 1.125rem);
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ---------- Grids ---------- */
.grid { display: grid; gap: var(--grid-gap, 1.5rem); }
.grid--2 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 320px), 1fr)); }
.grid--3 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 280px), 1fr)); }
.grid--4 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 240px), 1fr)); }
.grid--auto { grid-template-columns: repeat(auto-fit, minmax(min(100%, 300px), 1fr)); }

@media (min-width: 900px) {
  .grid--2 { grid-template-columns: repeat(2, 1fr); }
  .grid--3 { grid-template-columns: repeat(3, 1fr); }
  .grid--4 { grid-template-columns: repeat(4, 1fr); }
}

/* ---------- Flex stacks ---------- */
.stack      { display: flex; flex-direction: column; }
.stack--xs  { gap: var(--sp-2); }
.stack--sm  { gap: var(--sp-4); }
.stack--md  { gap: var(--sp-6); }
.stack--lg  { gap: var(--sp-10); }

.row        { display: flex; flex-direction: row; flex-wrap: wrap; align-items: center; }
.row--xs    { gap: var(--sp-2); }
.row--sm    { gap: var(--sp-3); }
.row--md    { gap: var(--sp-5); }
.row--lg    { gap: var(--sp-8); }
.row--between { justify-content: space-between; }
.row--center  { justify-content: center; }

/* ---------- Split layout (content + visual) ---------- */
.split {
  display: grid;
  gap: clamp(2rem, 6vw, 5rem);
  align-items: center;
}
@media (min-width: 900px) {
  .split { grid-template-columns: 1fr 1fr; }
  .split--6040 { grid-template-columns: 1.4fr 1fr; }
  .split--4060 { grid-template-columns: 1fr 1.4fr; }
  .split--reverse > :first-child { order: 2; }
}

/* ---------- Decorative backdrops ---------- */
.bg-grid {
  position: absolute;
  inset: 0;
  z-index: var(--z-bg);
  pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(255,255,255,0.035) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255,255,255,0.035) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse at center, black 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 75%);
}
[data-theme="light"] .bg-grid {
  background-image:
    linear-gradient(to right, rgba(10,14,26,0.05) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(10,14,26,0.05) 1px, transparent 1px);
}

.bg-glow {
  position: absolute;
  z-index: var(--z-bg);
  pointer-events: none;
  border-radius: 50%;
  filter: blur(100px);
  opacity: 0.5;
}
.bg-glow--cyan  { background: radial-gradient(circle, rgba(0,212,255,0.35), transparent 65%); }
.bg-glow--violet{ background: radial-gradient(circle, rgba(124,58,237,0.35), transparent 65%); }

/* ---------- Divider ---------- */
.divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border-default), transparent);
  margin-block: 2rem;
}