/* =============================================================
   DTS — base.css
   Reset moderno + tipografía base + helpers de layout
   ============================================================= */

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

html.lenis { height: auto; }
.lenis.lenis-smooth { scroll-behavior: auto; }
.lenis.lenis-smooth [data-lenis-prevent] { overscroll-behavior: contain; }
.lenis.lenis-stopped { overflow: hidden; }
.lenis.lenis-scrolling iframe { pointer-events: none; }

body {
  font-family: var(--font-body);
  font-size: var(--fs-body);
  font-weight: var(--fw-regular);
  line-height: var(--lh-base);
  color: var(--color-text);
  background: var(--color-bg);
  overflow-x: hidden;
  min-height: 100vh;
}

body.is-loading { overflow: hidden; }
body.nav-open { overflow: hidden; }

img, video, svg, canvas {
  max-width: 100%;
  display: block;
  height: auto;
}

button {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  cursor: pointer;
}

input, select, textarea {
  font: inherit;
  color: inherit;
}

a {
  color: var(--color-link);
  text-decoration: none;
  transition: color var(--dur-fast) var(--ease-out);
}
a:hover { color: var(--color-link-hover); }

ul, ol { list-style: none; }

:focus-visible {
  outline: 3px solid var(--teal-300);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

::selection {
  background: var(--teal-200);
  color: var(--navy-800);
}

/* =============================================================
   TIPOGRAFÍA BASE
   ============================================================= */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: var(--fw-bold);
  line-height: var(--lh-snug);
  letter-spacing: var(--ls-tight);
  color: var(--color-text);
}

h1 { font-size: var(--fs-h1); line-height: var(--lh-tight); }
h2 { font-size: var(--fs-h2); }
h3 { font-size: var(--fs-h3); }
h4 { font-size: var(--fs-h4); }

p { line-height: var(--lh-base); }

.display {
  font-family: var(--font-display);
  font-size: var(--fs-display);
  font-weight: var(--fw-bold);
  line-height: var(--lh-tight);
  letter-spacing: var(--ls-tight);
}

.headline {
  font-family: var(--font-display);
  font-size: var(--fs-h1);
  font-weight: var(--fw-bold);
  line-height: var(--lh-tight);
  letter-spacing: var(--ls-tight);
  color: var(--color-text);
}

.headline--md { font-size: var(--fs-h2); }

.lede {
  font-size: var(--fs-lede);
  line-height: var(--lh-relaxed);
  color: var(--color-text-soft);
  max-width: 58ch;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-body);
  font-size: var(--fs-xsmall);
  font-weight: var(--fw-semibold);
  letter-spacing: var(--ls-widest);
  text-transform: uppercase;
  color: var(--brand-teal);
  margin-bottom: var(--space-4);
}

.eyebrow::before {
  content: "";
  width: 28px;
  height: 2px;
  background: currentColor;
  border-radius: 2px;
}

.eyebrow--purple { color: var(--brand-purple); }
.eyebrow--steel { color: var(--brand-steel); }
.eyebrow--navy { color: var(--brand-navy); }

/* Gradient text */
.text-gradient {
  background: var(--gradient-spectrum);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

.text-teal { color: var(--brand-teal); }
.text-purple { color: var(--brand-purple); }
.text-navy { color: var(--brand-navy); }
.text-steel { color: var(--brand-steel); }
.text-muted { color: var(--color-text-muted); }
.text-on-dark { color: var(--color-text-on-dark); }
.text-center { text-align: center; }

/* =============================================================
   LAYOUT HELPERS
   ============================================================= */
.container {
  width: 100%;
  max-width: var(--container-xl);
  padding-inline: var(--space-5);
  margin-inline: auto;
}

.container--lg { max-width: var(--container-lg); }
.container--md { max-width: var(--container-md); }
.container--sm { max-width: var(--container-sm); }

@media (min-width: 768px) {
  .container { padding-inline: var(--space-6); }
}

.section {
  padding-block: var(--space-9);
  position: relative;
}

.section--compact { padding-block: var(--space-7); }
.section--tall { padding-block: var(--space-10); }
.section--soft { background: var(--color-bg-alt); }
.section--softer { background: var(--color-bg-soft); }
.section--light { background: var(--color-bg); }
.section--dark {
  background: var(--color-bg-dark);
  color: var(--color-text-on-dark);
}
.section--dark .lede,
.section--dark p { color: var(--color-text-muted-on-dark); }
.section--dark h1,
.section--dark h2,
.section--dark h3,
.section--dark h4 { color: var(--color-text-on-dark); }

.section--gradient {
  background: var(--gradient-spectrum);
  color: var(--color-text-on-dark);
}
.section--gradient .lede,
.section--gradient p { color: rgba(255, 255, 255, 0.85); }

/* Grid utilities */
.grid {
  display: grid;
  gap: var(--space-5);
}

.grid-2 { grid-template-columns: 1fr; }
.grid-3 { grid-template-columns: 1fr; }
.grid-4 { grid-template-columns: 1fr; }
.grid-auto { grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }

@media (min-width: 640px) {
  .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: 960px) {
  .grid { gap: var(--space-6); }
  .grid-3 { grid-template-columns: repeat(3, 1fr); }
  .grid-4 { grid-template-columns: repeat(4, 1fr); }
}

/* Compact grids for card rows — keep cards from stretching too wide */
@media (min-width: 1100px) {
  .grid-3 { max-width: 980px; margin-inline: auto; }
  .grid-4 { max-width: 1120px; margin-inline: auto; }
}

.flex { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.stack { display: flex; flex-direction: column; gap: var(--space-4); }
.cluster { display: flex; flex-wrap: wrap; align-items: center; gap: var(--space-3); }

/* Spacing helpers */
.mt-0 { margin-top: 0; }
.mt-3 { margin-top: var(--space-3); }
.mt-4 { margin-top: var(--space-4); }
.mt-5 { margin-top: var(--space-5); }
.mt-6 { margin-top: var(--space-6); }
.mt-7 { margin-top: var(--space-7); }
.mt-8 { margin-top: var(--space-8); }

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

.skip-link {
  position: absolute;
  top: -100px;
  left: var(--space-4);
  background: var(--brand-navy);
  color: #fff;
  padding: var(--space-3) var(--space-5);
  border-radius: var(--radius-md);
  z-index: var(--z-loader);
  transition: top var(--dur-base) var(--ease-out);
}

.skip-link:focus { top: var(--space-4); }

/* Reveal animation helper */
.reveal {
  opacity: 0;
  transform: translate3d(0, 24px, 0);
  transition: opacity var(--dur-slow) var(--ease-out), transform var(--dur-slow) var(--ease-out);
  will-change: transform, opacity;
}
.reveal.is-visible {
  opacity: 1;
  transform: translate3d(0, 0, 0);
}

[data-stagger] > * {
  opacity: 0;
  transform: translate3d(0, 24px, 0);
  transition: opacity var(--dur-slow) var(--ease-out), transform var(--dur-slow) var(--ease-out);
}
[data-stagger].is-visible > * {
  opacity: 1;
  transform: translate3d(0, 0, 0);
}
[data-stagger].is-visible > *:nth-child(1) { transition-delay: 0ms; }
[data-stagger].is-visible > *:nth-child(2) { transition-delay: 80ms; }
[data-stagger].is-visible > *:nth-child(3) { transition-delay: 160ms; }
[data-stagger].is-visible > *:nth-child(4) { transition-delay: 240ms; }
[data-stagger].is-visible > *:nth-child(5) { transition-delay: 320ms; }
[data-stagger].is-visible > *:nth-child(6) { transition-delay: 400ms; }
[data-stagger].is-visible > *:nth-child(n+7) { transition-delay: 480ms; }

/* Noscript fallback — mostrar contenido aunque no cargue JS */
.no-js .reveal,
.no-js [data-stagger] > * {
  opacity: 1;
  transform: none;
}

/* Scroll anchor offset for anchor-links compensando nav sticky */
section[id], [id^="section-"] {
  scroll-margin-top: calc(var(--nav-h) + var(--space-5));
}