/* =============================================================
   Section-specific layouts.
   Each section composes the components defined elsewhere.
   ============================================================= */

@layer sections;
@layer sections {

/* ---- Hero ---- */
.hero {
  min-height: 100vh;                        /* fallback */
  min-height: -webkit-fill-available;       /* iOS 12-14 */
  min-height: 100dvh;                       /* dynamic viewport */
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  align-items: center;
  gap: 80px;
  padding: 120px 48px 80px;
  position: relative;
  overflow: hidden;
}
.hero__orb,
.hero__orb--secondary {
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
}
.hero__orb {
  width: 900px;
  height: 900px;
  background: radial-gradient(
    circle,
    rgba(59, 130, 246, 0.25) 0%,
    rgba(59, 130, 246, 0.08) 35%,
    transparent 70%
  );
  top: -260px;
  right: -200px;
  filter: blur(100px);
}
.hero__orb--secondary {
  width: 560px;
  height: 560px;
  background: radial-gradient(
    circle,
    rgba(34, 211, 238, 0.18) 0%,
    rgba(34, 211, 238, 0.04) 40%,
    transparent 70%
  );
  bottom: 20px;
  left: 40px;
  filter: blur(120px);
}

.hero__name {
  font-family: var(--font-display);
  font-size: clamp(46px, 5.5vw, 80px);
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.035em;
  margin-bottom: 6px;
  color: var(--text-primary);
}
.hero__name em {
  display: block;
  font-style: normal;
  background: var(--grad-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-weight: 800;
}
.hero__role {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--text-muted);
  letter-spacing: 0.06em;
  margin-bottom: 28px;
  border-left: 2px solid transparent;
  border-image: var(--grad-primary) 1;
  padding-left: 14px;
}
.hero__bio {
  font-size: 16px;
  color: var(--text-muted);
  line-height: 1.7;
  max-width: 480px;
  margin-bottom: 40px;
}
.hero__bio strong {
  color: var(--text-primary);
  font-weight: 500;
}
.hero__actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}
.hero__featured {
  position: relative;
}

/* ---- Highlights ---- */
.highlights {
  background: var(--bg-primary);
  padding: 100px 48px;
  border-top: 1px solid var(--border-default);
}
.highlights__grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  margin-top: 40px;
}

/* ---- Skills ---- */
.skills__grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

/* ---- Apps ---- */
.apps {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-default);
  position: relative;
}
.apps__grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

/* ---- About ---- */
.about__layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 400px;
  gap: 72px;
  align-items: start;
}
.about__body {
  font-size: 15.5px;
  color: var(--text-muted);
  line-height: 1.85;
  max-width: 64ch;
}
.about__body p { margin-bottom: 22px; }
.about__body p:first-of-type {
  font-size: 18px;
  line-height: 1.65;
  color: var(--text-primary);
  padding-left: 18px;
  border-left: 2px solid var(--accent-blue);
  margin-bottom: 28px;
}
.about__body strong {
  color: var(--text-primary);
  font-weight: 600;
}

.about-card {
  position: sticky;
  top: 100px;
  background:
    linear-gradient(180deg, var(--accent-tint) 0%, transparent 140px),
    var(--bg-card);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-depth);
  transition:
    border-color 0.3s ease,
    box-shadow 0.3s ease,
    transform 0.3s ease;
}
.about-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: var(--grad-primary);
  opacity: 0.85;
}
.about-card:hover {
  border-color: var(--border-strong);
  box-shadow: var(--shadow-lift), 0 0 48px rgba(59, 130, 246, 0.08);
  transform: translateY(-2px);
}

.about-card__head {
  padding: 26px 24px;
  background: linear-gradient(135deg, var(--accent-tint) 0%, transparent 100%);
  border-bottom: 1px solid var(--border-default);
  display: flex;
  align-items: center;
  gap: 14px;
}

.avatar {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-pill);
  background: var(--grad-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 17px;
  color: #fff;
  flex-shrink: 0;
  position: relative;
  box-shadow:
    var(--shadow-soft-glow),
    var(--shadow-inset-light-strong);
}
.avatar::after {
  content: "";
  position: absolute;
  inset: -4px;
  border-radius: inherit;
  border: 1px solid rgba(59, 130, 246, 0.22);
  pointer-events: none;
}
.about-card__name {
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 800;
  letter-spacing: -0.01em;
}
.about-card__sub {
  font-size: 12px;
  color: var(--text-muted);
}

.fact-row {
  display: flex;
  gap: 16px;
  padding: 14px 24px;
  border-bottom: 1px solid var(--border-default);
  align-items: flex-start;
  transition: background 0.2s ease, border-color 0.2s ease;
}
.fact-row:hover { background: var(--glow-subtle); }
.fact-row:hover .fact-key { color: var(--accent-cyan); }
.fact-row:last-child { border-bottom: none; }

.fact-key {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text-subtle);
  letter-spacing: 0.08em;
  min-width: 82px;
  padding-top: 3px;
  text-transform: uppercase;
  transition: color 0.2s ease;
}
.fact-value {
  font-size: 13.5px;
  color: var(--text-primary);
  line-height: 1.55;
}
.fact-value a {
  color: var(--accent-blue);
  text-decoration: none;
  background-image: linear-gradient(var(--accent-cyan), var(--accent-cyan));
  background-size: 0 1px;
  background-position: 0 100%;
  background-repeat: no-repeat;
  transition: background-size 0.25s ease, color 0.2s ease;
}
.fact-value a:hover {
  color: var(--accent-cyan);
  background-size: 100% 1px;
}
.fact-value--available {
  color: var(--accent-lime);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 500;
}
.fact-value--available::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-lime);
  box-shadow: 0 0 0 0 rgba(34, 211, 238, 0.55);
  animation: pulse-availability 2.2s infinite;
}

@keyframes pulse-availability {
  0%   { box-shadow: 0 0 0 0   rgba(34, 211, 238, 0.5); }
  70%  { box-shadow: 0 0 0 8px rgba(34, 211, 238, 0); }
  100% { box-shadow: 0 0 0 0   rgba(34, 211, 238, 0); }
}

/* ---- Contact ---- */
.contact {
  background: var(--bg-card);
  border-top: 1px solid var(--border-default);
  text-align: center;
  padding: 120px 48px;
  padding-bottom: max(120px, env(safe-area-inset-bottom) + 48px);
  position: relative;
  overflow: hidden;
}
.contact__glow {
  position: absolute;
  inset: 0;
  background: radial-gradient(
    ellipse 800px 400px at 50% 0%,
    rgba(59, 130, 246, 0.18) 0%,
    rgba(34, 211, 238, 0.06) 40%,
    transparent 70%
  );
  pointer-events: none;
}
.contact__inner {
  max-width: 640px;
  margin: 0 auto;
  position: relative;
}
.contact__label {
  justify-content: center;
  margin-bottom: 24px;
}
.contact__headline {
  font-family: var(--font-display);
  font-size: clamp(40px, 6vw, 70px);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1;
  margin-bottom: 20px;
}
.contact__headline em {
  font-style: normal;
  background: var(--grad-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-weight: 800;
}
.contact__sub {
  font-size: 16px;
  color: var(--text-muted);
  margin-bottom: 44px;
  line-height: 1.65;
}
.contact__actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 36px;
}
.contact__meta {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-subtle);
  letter-spacing: 0.06em;
}

/* =============================================================
   Performance — defer paint cost of below-the-fold sections.
   The browser skips layout/paint for off-screen elements until
   they enter the viewport, with `contain-intrinsic-size` reserving
   space so scroll-position remains stable.
   ============================================================= */
.apps,
#approach,
#experience,
#about {
  content-visibility: auto;
  contain-intrinsic-size: 1px 1200px;
}

/* Hero orbs use a heavy `filter: blur()` — promoting them to their
   own compositor layer prevents whole-page repaints. */
.hero__orb,
.hero__orb--secondary {
  transform: translateZ(0);
  will-change: transform;
}

}