/* =================================================================
   BASE — Quiscalux
   Reset, tipografía global, layout, utilidades.
   ================================================================= */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;600;700&display=swap');

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-base);
  font-size: var(--fs-body);
  font-weight: var(--fw-regular);
  line-height: var(--lh-body);
  color: var(--text-main);
  background-color: var(--bg-main);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

/* ── Tipografía ── */
h1, h2, h3, h4 {
  line-height: var(--lh-heading);
  font-weight: var(--fw-bold);
  color: var(--text-main);
}

h1 { font-size: var(--fs-h1); }
h2 { font-size: var(--fs-h2); }
h3 { font-size: var(--fs-h3); }
.display-text { font-size: var(--fs-display); font-weight: var(--fw-bold); line-height: 1.1; }

p {
  color: var(--text-muted);
  max-width: 70ch;
}

a {
  color: var(--teal);
  text-decoration: none;
  transition: color var(--transition-base);
}
a:hover { color: var(--blue-ui); }

strong { font-weight: var(--fw-semibold); color: var(--text-main); }

ul, ol { list-style: none; }

img { max-width: 100%; height: auto; display: block; }

/* ── Layout ── */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--space-4);
}

@media (min-width: 768px) {
  .container { padding-inline: 40px; }
}

@media (min-width: 1280px) {
  .container { padding-inline: 80px; }
}

/* ── Secciones ── */
.section {
  padding-block: var(--space-16);
}

.section--sm {
  padding-block: var(--space-12);
}

/* ── Grid ── */
.grid {
  display: grid;
  gap: var(--space-6);
}

.grid--2 { grid-template-columns: 1fr; }
.grid--3 { grid-template-columns: 1fr; }
.grid--4 { grid-template-columns: 1fr; }

@media (min-width: 768px) {
  .grid--2 { grid-template-columns: repeat(2, 1fr); }
  .grid--3 { grid-template-columns: repeat(2, 1fr); }
  .grid--4 { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 1024px) {
  .grid--3 { grid-template-columns: repeat(3, 1fr); }
  .grid--4 { grid-template-columns: repeat(4, 1fr); }
}

/* ── Utilidades ── */
.text-center { text-align: center; }
.text-center p, 
.text-center ul { margin-inline: auto; }

.text-muted { color: var(--text-muted); }
.text-teal { color: var(--teal-text); }
.text-small { font-size: var(--fs-small); }
.mx-auto { margin-inline: auto; }

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

/* ── Separador ── */
.separator {
  border: none;
  height: 1px;
  background: var(--border-teal);
  margin-block: var(--space-12);
}

/* ── Animaciones de Scroll (Reveal) ── */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s var(--transition-smooth), transform 0.8s var(--transition-smooth);
  will-change: opacity, transform;
}

.reveal.active {
  opacity: 1;
  transform: translateY(0);
}

/* Delay gradual para grids */
.reveal--delay-1 { transition-delay: 0.1s; }
.reveal--delay-2 { transition-delay: 0.2s; }
.reveal--delay-3 { transition-delay: 0.3s; }

/* ── Accesibilidad ── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  .reveal {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }
}

:focus-visible {
  outline: 2px solid var(--teal);
  outline-offset: 2px;
}