/* ===========================================================
   Layout primitives
   =========================================================== */

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

@media (min-width: 768px) {
  .container { padding-inline: var(--gutter-lg); }
}

/* Section vertical rhythm */
.section {
  position: relative;
  padding-block: clamp(72px, 9vw, 144px);
}
.section--tight { padding-block: clamp(48px, 6vw, 96px); }
.section--hero  { padding-top: calc(var(--nav-h) + clamp(48px, 8vw, 120px)); padding-bottom: clamp(64px, 10vw, 144px); }

/* Eyebrow label above section titles */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: var(--weight-medium);
  letter-spacing: var(--tracking-widest);
  text-transform: uppercase;
  color: var(--color-text-muted);
  padding: 6px 12px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  background: var(--color-surface);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}
.eyebrow::before {
  content: '';
  width: 6px;
  height: 6px;
  background: var(--color-accent);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--color-accent);
}

/* Section heading */
.section-heading {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: var(--space-4);
  max-width: 720px;
  margin-inline: auto;
  margin-bottom: clamp(40px, 6vw, 80px);
}
.section-heading--start {
  align-items: flex-start;
  text-align: left;
  margin-inline: 0;
}
.section-heading h2 {
  font-size: var(--fs-4xl);
  letter-spacing: var(--tracking-tight);
  line-height: var(--lh-tight);
}
.section-heading p {
  font-size: var(--fs-lg);
  color: var(--color-text-muted);
  max-width: 600px;
}

/* Grid utilities */
.grid { display: grid; gap: var(--space-6); }
.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 1024px) {
  .grid--3, .grid--4 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
  .grid--2, .grid--3, .grid--4 { grid-template-columns: 1fr; }
}

/* Flex helpers */
.row    { display: flex; align-items: center; gap: var(--space-3); }
.row-gap-2 { gap: var(--space-2); }
.row-gap-4 { gap: var(--space-4); }
.col    { display: flex; flex-direction: column; gap: var(--space-3); }

/* Visually hidden but accessible */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}

/* Decorative gradient blobs (used in hero/sections) */
.bg-blobs {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
  z-index: 0;
}
.bg-blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.55;
  animation: blob-float 22s ease-in-out infinite;
}
.bg-blob--1 {
  width: 540px; height: 540px;
  top: -180px; left: -120px;
  background: radial-gradient(circle, var(--color-primary) 0%, transparent 70%);
}
.bg-blob--2 {
  width: 480px; height: 480px;
  top: 20%; right: -160px;
  background: radial-gradient(circle, var(--color-accent) 0%, transparent 70%);
  animation-delay: -7s;
  opacity: 0.40;
}
.bg-blob--3 {
  width: 420px; height: 420px;
  bottom: -120px; left: 30%;
  background: radial-gradient(circle, var(--color-violet) 0%, transparent 70%);
  animation-delay: -14s;
  opacity: 0.30;
}

@keyframes blob-float {
  0%, 100%   { transform: translate(0, 0) scale(1); }
  33%        { transform: translate(60px, -40px) scale(1.08); }
  66%        { transform: translate(-40px, 60px) scale(0.92); }
}

/* Subtle dotted background pattern */
.bg-dots {
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle, var(--color-border) 1px, transparent 1px);
  background-size: 24px 24px;
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 30%, black 30%, transparent 75%);
          mask-image: radial-gradient(ellipse 80% 60% at 50% 30%, black 30%, transparent 75%);
  opacity: 0.6;
  pointer-events: none;
  z-index: 0;
}

/* Grid background pattern */
.bg-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, var(--color-border-soft) 1px, transparent 1px),
    linear-gradient(to bottom, var(--color-border-soft) 1px, transparent 1px);
  background-size: 64px 64px;
  -webkit-mask-image: radial-gradient(ellipse 70% 50% at 50% 0%, black 0%, transparent 75%);
          mask-image: radial-gradient(ellipse 70% 50% at 50% 0%, black 0%, transparent 75%);
  pointer-events: none;
  z-index: 0;
}

/* Make sure section content stays above bg layers */
.section > .container,
.section > * { position: relative; z-index: 1; }

/* Divider */
.divider {
  height: 1px;
  background: linear-gradient(to right, transparent, var(--color-border), transparent);
  margin-block: var(--space-12);
}