/* =====================================================
   about.css — Sección 4: Sobre Nosotros
   Stats Terminal (count-up animado) + Tech Grid con iconos
   ===================================================== */

.about {
  position: relative;
  overflow: hidden;
}

/* Fade superior desde bg-primary */
.about::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 140px;
  background: linear-gradient(
    to bottom,
    var(--bg-primary),
    transparent
  );
  pointer-events: none;
  z-index: 1;
}

/* Fade inferior */
.about::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 140px;
  background: linear-gradient(
    to top,
    var(--bg-primary),
    transparent
  );
  pointer-events: none;
  z-index: 1;
}

/* ---------- Header ---------- */
.about__header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto var(--space-9);
  /* El estado inicial lo aplica la clase global `.reveal-soft`
     (opacity:0; filter:blur(12px); transform:translateY(40px); transition).
     initReveal() (IntersectionObserver) la quita cuando entra al viewport. */
}

.about__kicker {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: var(--fs-mono);
  color: var(--accent-color);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  margin-bottom: var(--space-4);
  padding: var(--space-1) var(--space-3);
  background: rgba(73, 197, 182, 0.06);
  border: 1px solid var(--accent-border);
  border-radius: var(--radius-pill);
}

.about__title {
  font-family: var(--font-display);
  font-size: var(--fs-h1);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: 0.01em;
  margin-bottom: var(--space-4);
  color: var(--text-main);
  text-wrap: balance;
}

.about__title-accent {
  display: block;
  color: var(--accent-color);
  font-weight: 900;
  letter-spacing: 0.02em;
  text-shadow: 0 0 24px var(--accent-glow);
}

.about__subtitle {
  font-size: var(--fs-body);
  color: var(--text-muted);
  line-height: 1.7;
  max-width: 56ch;
  margin: 0 auto;
}

/* =====================================================
   STATS — Terminal count-up
   ===================================================== */

.about__stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
  max-width: 980px;
  margin: 0 auto var(--space-9);
}

@media (min-width: 768px) {
  .about__stats {
    grid-template-columns: repeat(4, 1fr);
  }
}

.stat-card {
  position: relative;
  padding: var(--space-5) var(--space-3);
  background: rgba(11, 15, 25, 0.7);
  backdrop-filter: blur(12px) saturate(140%);
  -webkit-backdrop-filter: blur(12px) saturate(140%);
  border: 1px solid var(--accent-border);
  border-radius: var(--radius-md);
  text-align: center;
  font-family: var(--font-mono);
  /* Estado inicial: IntersectionObserver de initReveal() añade
     `.is-visible` cuando entra al viewport → fade-in + slide-up. */
  opacity: 0;
  transform: translateY(40px);
  transition:
    background var(--dur-base) var(--ease-smooth),
    border-color var(--dur-base) var(--ease-smooth),
    opacity 700ms var(--ease-out-expo),
    transform 700ms var(--ease-out-expo);
  will-change: opacity, transform;
}

/* Stagger por nth-child */
.stat-card:nth-child(1) { transition-delay: 0ms; }
.stat-card:nth-child(2) { transition-delay: 100ms; }
.stat-card:nth-child(3) { transition-delay: 200ms; }
.stat-card:nth-child(4) { transition-delay: 300ms; }

.stat-card.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.stat-card::before {
  /* Esquina decorativa (HUD) */
  content: "";
  position: absolute;
  top: var(--space-2);
  left: var(--space-2);
  right: var(--space-2);
  bottom: var(--space-2);
  border: 1px solid rgba(73, 197, 182, 0.06);
  border-radius: var(--radius-sm);
  pointer-events: none;
}

.stat-card:hover {
  border-color: var(--accent-color);
  background: rgba(17, 24, 39, 0.8);
  transform: translateY(-3px);
}

.stat-card__prefix {
  position: absolute;
  top: var(--space-2);
  left: var(--space-3);
  font-size: var(--fs-mono);
  color: var(--accent-color);
  opacity: 0.5;
}

.stat-card__value {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw + 1rem, 3.25rem);
  font-weight: 900;
  line-height: 1;
  color: var(--accent-color);
  text-shadow: 0 0 24px var(--accent-glow);
  letter-spacing: 0.02em;
  margin-bottom: var(--space-2);
}

.stat-card__label {
  display: block;
  font-size: var(--fs-mono);
  font-size: 11px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  line-height: 1.4;
  /* En grid de 2 cols en móvil (~165px por tarjeta), labels largos
     como "Tecnologías dominadas" pueden forzar wrap feo. Permitir
     break evita overflow horizontal de la card. */
  overflow-wrap: anywhere;
}

/* =====================================================
   TECH STACK HEAD
   ===================================================== */

.about__tech-head {
  text-align: center;
  max-width: 720px;
  margin: 0 auto var(--space-7);
}

.about__tech-title {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 2vw + 1rem, 2rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: 0.01em;
  margin-bottom: var(--space-3);
  color: var(--text-main);
}

.about__tech-title-accent {
  display: block;
  color: var(--accent-color);
  font-weight: 900;
  text-shadow: 0 0 24px var(--accent-glow);
}

.about__tech-sub {
  font-size: var(--fs-body);
  color: var(--text-muted);
  line-height: 1.7;
  max-width: 56ch;
  margin: 0 auto;
}

/* =====================================================
   TECH GRID — Iconos interactivos
   ===================================================== */

.tech-grid {
  list-style: none;
  margin: 0 auto;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-3);
  max-width: 980px;
}

@media (min-width: 640px) {
  .tech-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

@media (min-width: 980px) {
  .tech-grid {
    grid-template-columns: repeat(8, 1fr);
    gap: var(--space-4);
  }
}

.tech-item {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-4) var(--space-2);
  background: rgba(11, 15, 25, 0.6);
  backdrop-filter: blur(8px) saturate(140%);
  -webkit-backdrop-filter: blur(8px) saturate(140%);
  border: 1px solid var(--accent-border);
  border-radius: var(--radius-md);
  color: var(--accent-color);
  cursor: default;
  /* Estado inicial: IntersectionObserver de initReveal() añade
     `.is-visible` cuando entra al viewport → fade-in + slide-up. */
  opacity: 0;
  transform: translateY(20px);
  transition:
    background var(--dur-base) var(--ease-smooth),
    border-color var(--dur-base) var(--ease-smooth),
    color var(--dur-base) var(--ease-smooth),
    opacity 500ms var(--ease-out-expo),
    transform 500ms var(--ease-out-expo);
  will-change: opacity, transform;
}

/* Stagger por nth-child */
.tech-item:nth-child(1) { transition-delay: 0ms; }
.tech-item:nth-child(2) { transition-delay: 50ms; }
.tech-item:nth-child(3) { transition-delay: 100ms; }
.tech-item:nth-child(4) { transition-delay: 150ms; }
.tech-item:nth-child(5) { transition-delay: 200ms; }
.tech-item:nth-child(6) { transition-delay: 250ms; }
.tech-item:nth-child(7) { transition-delay: 300ms; }
.tech-item:nth-child(8) { transition-delay: 350ms; }

.tech-item.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.tech-item:hover {
  background: rgba(17, 24, 39, 0.8);
  border-color: var(--accent-color);
  transform: translateY(-3px);
  color: var(--accent-soft);
  box-shadow: 0 0 20px rgba(73, 197, 182, 0.2);
}

.tech-item svg {
  width: 36px;
  height: 36px;
  stroke-width: 1.5;
  transition: transform var(--dur-base) var(--ease-spring);
}

.tech-item:hover svg {
  transform: scale(1.1);
}

.tech-item__name {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-muted);
  letter-spacing: 0.05em;
  text-align: center;
  transition: color var(--dur-base) var(--ease-smooth);
}

.tech-item:hover .tech-item__name {
  color: var(--text-main);
}

/* =====================================================
   prefers-reduced-motion
   ===================================================== */
@media (prefers-reduced-motion: reduce) {
  .stat-card:hover,
  .tech-item:hover { transform: none; }
  .tech-item:hover svg { transform: none; }
}