/* ==========================================================================
   ANSELTRONICA — Layout, contenedores, retículas y utilidades
   ========================================================================== */

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

.container--narrow {
  max-width: var(--container-narrow);
}

.container--wide {
  max-width: var(--container-wide);
}

.section {
  position: relative;
  padding-block: var(--section-y);
}

.section--tight {
  padding-block: clamp(3rem, 2rem + 4vw, 5rem);
}

.section--flush-top {
  padding-top: 0;
}

/* ------------------------------------------------------------- cabeceras */

.section-head {
  max-width: 46rem;
  margin-bottom: clamp(2.25rem, 1.5rem + 3vw, 3.75rem);
}

.section-head--center {
  margin-inline: auto;
  text-align: center;
}

.section-head--center .section-head__lead {
  margin-inline: auto;
}

.section-head__lead {
  margin-top: var(--sp-4);
  max-width: 44rem;
  color: var(--c-text-soft);
  font-size: var(--fs-lead);
  line-height: 1.62;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-mono);
  font-size: var(--fs-eyebrow);
  font-weight: 500;
  letter-spacing: var(--ls-eyebrow);
  text-transform: uppercase;
  color: var(--c-accent);
}

.eyebrow::before {
  content: '';
  width: 1.75rem;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--c-accent));
}

.eyebrow--plain::before {
  display: none;
}

.section-head--center .eyebrow::before {
  display: none;
}

.section-head h2 + .section-head__lead {
  margin-top: var(--sp-4);
}

/* --------------------------------------------------------------- retículas */

.grid {
  display: grid;
  gap: var(--sp-5);
}

.grid--2 {
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 21rem), 1fr));
}
.grid--3 {
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 17.5rem), 1fr));
}
.grid--4 {
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 14.5rem), 1fr));
}
.grid--auto-sm {
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 12rem), 1fr));
}

.split {
  display: grid;
  gap: clamp(2rem, 1rem + 4vw, 4.5rem);
  align-items: start;
}

@media (min-width: 62rem) {
  .split {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .split--wide-left {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  }
  .split--wide-right {
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  }
}

.stack {
  display: flex;
  flex-direction: column;
  gap: var(--sp-5);
}

.stack--sm {
  gap: var(--sp-3);
}

.stack--lg {
  gap: var(--sp-7);
}

.cluster {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-3);
  align-items: center;
}

.cluster--center {
  justify-content: center;
}

/* -------------------------------------------------------------- utilidades */

.text-accent {
  color: var(--c-accent);
}
.text-soft {
  color: var(--c-text-soft);
}
.text-center {
  text-align: center;
}
.mono {
  font-family: var(--font-mono);
  font-size: var(--fs-label);
  letter-spacing: 0.04em;
}
.gradient-text {
  background: var(--grad-text);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.lead {
  font-size: var(--fs-lead);
  color: var(--c-text-soft);
  line-height: 1.62;
}
.mt-0 {
  margin-top: 0;
}
.mt-4 {
  margin-top: var(--sp-4);
}
.mt-5 {
  margin-top: var(--sp-5);
}
.mt-6 {
  margin-top: var(--sp-6);
}
.mt-8 {
  margin-top: var(--sp-8);
}
.full-bleed {
  width: 100%;
}

/* Divisor técnico con marcas de medición */
.rule {
  position: relative;
  height: 1px;
  border: 0;
  background: linear-gradient(90deg, transparent, var(--c-border-strong) 12%, var(--c-border-strong) 88%, transparent);
}

.rule--ticks {
  height: 13px;
  background:
    repeating-linear-gradient(90deg, var(--c-border-strong) 0 1px, transparent 1px 40px) center / 100% 13px no-repeat,
    linear-gradient(90deg, transparent, var(--c-border-strong) 20%, var(--c-border-strong) 80%, transparent) center / 100% 1px no-repeat;
}

/* Tarjeta base de cristal técnico */
.surface {
  position: relative;
  background:
    linear-gradient(180deg, rgba(244, 248, 233, 0.72), rgba(255, 255, 255, 0.86));
  border: 1px solid var(--c-border);
  border-radius: var(--r-lg);
  box-shadow: var(--sh-md);
}

.surface--glass {
  background: var(--c-surface-glass);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}

/* Retícula decorativa dentro de paneles */
.tech-grid::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  pointer-events: none;
  background-image:
    linear-gradient(to right, var(--grid-line) 1px, transparent 1px),
    linear-gradient(to bottom, var(--grid-line) 1px, transparent 1px);
  background-size: 32px 32px;
  mask-image: radial-gradient(ellipse 80% 70% at 50% 50%, #000, transparent 85%);
  -webkit-mask-image: radial-gradient(ellipse 80% 70% at 50% 50%, #000, transparent 85%);
}

/* Barra superior de acento, tipo instrumento */
.accent-bar {
  position: absolute;
  inset: 0 0 auto;
  height: 2px;
  border-radius: inherit;
  background: var(--grad-brand);
  opacity: 0.85;
}

/* ------------------------------------------------- animación de aparición */

[data-reveal] {
  opacity: 0;
  transform: translate3d(0, 22px, 0);
  transition:
    opacity 720ms var(--ease-out),
    transform 720ms var(--ease-out);
  transition-delay: var(--reveal-delay, 0ms);
  will-change: opacity, transform;
}

[data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  [data-reveal] {
    opacity: 1;
    transform: none;
  }
}

/* Sin JS: el contenido nunca queda oculto */
.no-js [data-reveal] {
  opacity: 1;
  transform: none;
}

/* --------------------------------------------------------------- keyframes */

@keyframes pulse-soft {
  0%,
  100% {
    opacity: 0.55;
  }
  50% {
    opacity: 1;
  }
}

@keyframes sweep {
  0% {
    transform: translateX(-100%);
  }
  100% {
    transform: translateX(100%);
  }
}

@keyframes scan {
  0% {
    transform: translateY(-6%);
    opacity: 0;
  }
  12% {
    opacity: 0.9;
  }
  88% {
    opacity: 0.9;
  }
  100% {
    transform: translateY(106%);
    opacity: 0;
  }
}

@keyframes trace {
  to {
    stroke-dashoffset: 0;
  }
}

@keyframes float-y {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-10px);
  }
}

@keyframes blink {
  0%,
  45% {
    opacity: 1;
  }
  50%,
  95% {
    opacity: 0.25;
  }
  100% {
    opacity: 1;
  }
}

@keyframes marquee {
  from {
    transform: translateX(0);
  }
  to {
    transform: translateX(-50%);
  }
}