/* ============================================================
   ABOUT SECTION — Apple-style Identity Switcher
   Minimal · Responsive · High-Contrast
   ============================================================ */

.about {
  padding: clamp(3rem, 7vw, 6rem) 0;
  background: var(--bg);
  color: var(--text-primary);
  overflow: hidden;
  position: relative;
}

.apple-wrap {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 clamp(1.5rem, 5vw, 6rem);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2rem, 8vw, 6rem);
  align-items: center;
}

/* ── Left: Card Shell ────────────────────────────────────── */
.card-shell {
  position: relative;
  border-radius: 28px;
  overflow: hidden;
  aspect-ratio: 3 / 3.8;
  background: var(--bg-raised);
  border: 1px solid var(--border);
  transition: box-shadow 0.7s var(--ease-out);
  z-index: 1;
}

.card-noise {
  position: absolute;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.03'/%3E%3C/svg%3E");
  pointer-events: none;
  z-index: 2;
}

.card-glow {
  position: absolute;
  inset: 0;
  transition: background 0.8s var(--ease-out);
  z-index: 0;
  opacity: 0.6;
}

.card-inner {
  position: relative;
  z-index: 3;
  height: 100%;
  display: flex;
  flex-direction: column;
  padding: clamp(1.5rem, 4vw, 2.5rem);
}

.card-icon-wrap {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  border: 1px solid var(--border-strong);
  background: var(--surface);
  backdrop-filter: blur(8px);
  transition: background 0.5s, border-color 0.5s, color 0.5s;
  flex-shrink: 0;
  margin-bottom: auto;
}

.card-name {
  font-family: 'Geist', var(--font-sans);
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  font-weight: 600;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 0.5rem;
}

.card-role {
  font-family: 'Geist', var(--font-sans);
  font-size: 0.85rem;
  font-weight: 400;
  letter-spacing: 0.02em;
  margin-bottom: 1.5rem;
  transition: color 0.5s;
}

.card-divider {
  height: 1px;
  background: var(--border);
  margin-bottom: 1.5rem;
}

.card-stat {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
}

.card-stat-num {
  font-family: 'Geist', var(--font-sans);
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 300;
  letter-spacing: -0.04em;
  line-height: 1;
}

.card-stat-label {
  font-family: 'Figtree', var(--font-sans);
  font-size: 0.7rem;
  color: var(--text-secondary);
  font-weight: 400;
  line-height: 1.4;
  max-width: 90px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

/* ── Right: Content Side ─────────────────────────────────── */
.content-side {
  display: flex;
  flex-direction: column;
  opacity: 0;
  transform: translateY(20px);
}

.content-side.visible {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.8s var(--ease-out), transform 0.8s var(--ease-out);
}

.segment-wrap {
  display: flex;
  background: var(--surface);
  border-radius: 14px;
  padding: 5px;
  gap: 5px;
  margin-bottom: 2.5rem;
  border: 1px solid var(--border);
  width: fit-content;
}

.seg-btn {
  padding: 10px 24px;
  border-radius: 10px;
  font-family: 'Figtree', var(--font-sans);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.3s var(--ease-out);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  letter-spacing: 0.01em;
}

.seg-btn:hover {
  color: var(--text-secondary);
}

.seg-btn.active {
  background: var(--bg-raised);
  color: var(--text-primary);
  box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}

.seg-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  flex-shrink: 0;
  background: var(--text-muted);
  transition: background 0.4s var(--ease-out), transform 0.4s var(--ease-out);
}

.seg-btn.active .seg-dot {
  transform: scale(1.2);
  background: var(--accent);
}

/* Bio Content */
#about-bio-container {
  position: relative;
  min-height: 220px;
}

.bio-tag {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 400;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1rem;
}

.bio-headline {
  font-family: 'Figtree', var(--font-sans);
  font-size: clamp(2rem, 4.5vw, 3.2rem);
  font-weight: 300;
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin-bottom: 1.5rem;
}

.bio-headline em {
  font-style: italic;
  font-weight: 300;
  color: var(--text-secondary);
  opacity: 0.7;
}

.bio-body {
  font-family: 'Figtree', var(--font-sans);
  font-size: 1.05rem;
  font-weight: 400;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 2rem;
  max-width: 520px;
}

/* Traits */
.traits-wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 3.5rem;
}

.trait-pill {
  padding: 8px 16px;
  border-radius: 20px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 400;
  letter-spacing: 0.03em;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text-secondary);
  transition: all 0.5s var(--ease-out);
}

.trait-pill:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-dim);
}

/* CTAs */
.cta-row {
  display: flex;
  gap: 15px;
  align-items: center;
}

.cta-primary {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 16px 28px;
  border-radius: 14px;
  background: var(--accent);
  color: #fff;
  font-family: 'Figtree', var(--font-sans);
  font-size: 0.95rem;
  font-weight: 600;
  transition: all 0.4s var(--ease-out);
}

.cta-primary:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 10px 30px var(--accent-glow);
}

.cta-secondary {
  padding: 16px 24px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text-secondary);
  font-family: 'Figtree', var(--font-sans);
  font-size: 0.95rem;
  font-weight: 500;
  transition: all 0.3s var(--ease-out);
}

.cta-secondary:hover {
  background: var(--surface-hover);
  color: var(--text-primary);
  border-color: var(--border-strong);
}

/* Animations */
.bio-fade {
  transition: opacity 0.4s var(--ease-out), transform 0.5s var(--ease-out);
}

.bio-fade.out {
  opacity: 0;
  transform: translateY(15px);
  position: absolute;
  top: 0;
  left: 0;
  pointer-events: none;
}

.bio-fade.in {
  opacity: 1;
  transform: translateY(0);
  position: relative;
}

/* Responsive */
@media (max-width: 960px) {
  .apple-wrap {
    grid-template-columns: 1fr;
    gap: 4rem;
    padding-top: 2rem;
  }
  .card-shell {
    max-width: 500px;
    margin: 0 auto;
    aspect-ratio: 3 / 3.5;
  }
  .content-side {
    align-items: center;
    text-align: center;
  }
  .bio-body {
    margin-left: auto;
    margin-right: auto;
  }
  .traits-wrap {
    justify-content: center;
  }
  .cta-row {
    justify-content: center;
  }
  .segment-wrap {
    margin-bottom: 2.5rem;
  }
}

@media (max-width: 640px) {
  .card-shell {
    aspect-ratio: 3 / 3.2;
    border-radius: 20px;
  }
  .bio-headline {
    font-size: 2rem;
  }
  .seg-btn {
    padding: 8px 16px;
    font-size: 0.75rem;
  }
}