/* ==========================================================================
   base.css — Reset, tipografía, layout general y utilidades
   ========================================================================== */

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-h);
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.65;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

body.no-scroll { overflow: hidden; }

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; margin: 0; padding: 0; }
h1, h2, h3, h4, p, figure { margin: 0; }
button { font: inherit; color: inherit; }

::selection { background: rgba(var(--accent-rgb), 0.3); }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 6px;
}

.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: fixed; left: 1rem; top: -4rem; z-index: 100;
  padding: 0.6rem 1rem; border-radius: 10px;
  background: var(--accent); color: #031317; font-weight: 600;
  transition: top 0.2s var(--ease);
}
.skip-link:focus { top: 1rem; }

/* ---------- Fondo global ---------- */
.bg-fx {
  position: fixed; inset: 0; z-index: -1; pointer-events: none;
  background:
    radial-gradient(900px 500px at 85% -10%, rgba(var(--accent-rgb), 0.12), transparent 60%),
    radial-gradient(700px 500px at -10% 40%, rgba(79, 140, 255, 0.09), transparent 60%),
    var(--bg);
}
.bg-fx::after {
  content: ""; position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(148, 163, 184, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(148, 163, 184, 0.06) 1px, transparent 1px);
  background-size: 56px 56px;
  -webkit-mask-image: radial-gradient(ellipse at 50% 20%, #000 20%, transparent 75%);
          mask-image: radial-gradient(ellipse at 50% 20%, #000 20%, transparent 75%);
}

/* ---------- Layout ---------- */
.container { width: min(100% - 2.5rem, var(--container)); margin-inline: auto; }
.section { position: relative; padding: clamp(4.5rem, 10vw, 8rem) 0; }

.section__head { max-width: 640px; margin-bottom: clamp(2.2rem, 5vw, 3.6rem); }
.eyebrow {
  display: inline-flex; align-items: center; gap: 0.6rem;
  font-family: var(--font-mono); font-size: 0.78rem; letter-spacing: 0.16em;
  text-transform: uppercase; color: var(--accent); margin-bottom: 0.9rem;
}
.eyebrow::before { content: ""; width: 28px; height: 1px; background: var(--accent); }
.section__title {
  font-size: clamp(1.9rem, 4.2vw, 2.9rem); line-height: 1.12; letter-spacing: -0.025em; font-weight: 700;
}
.section__lead { margin-top: 1rem; color: var(--text-soft); font-size: 1.05rem; }

.text-grad {
  background: var(--grad);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; color: transparent;
}

/* ---------- Botones ---------- */
.btn {
  --pad-y: 0.85rem; --pad-x: 1.5rem;
  position: relative; display: inline-flex; align-items: center; justify-content: center; gap: 0.6rem;
  padding: var(--pad-y) var(--pad-x); border-radius: 999px; border: 1px solid transparent;
  font-weight: 600; font-size: 0.97rem; cursor: pointer; isolation: isolate;
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease), background 0.3s, border-color 0.3s;
}
.btn svg { width: 18px; height: 18px; transition: transform 0.3s var(--ease); }
.btn:hover svg { transform: translateX(3px); }
.btn:active { transform: scale(0.98); }

.btn--primary { background: var(--grad); color: #031317; box-shadow: 0 8px 30px -8px rgba(var(--accent-rgb), 0.6); }
.btn--primary:hover { transform: translateY(-2px); box-shadow: 0 14px 40px -8px rgba(var(--accent-rgb), 0.75); }

.btn--ghost { background: var(--surface); color: var(--text); border-color: var(--border); backdrop-filter: blur(8px); }
.btn--ghost:hover { border-color: rgba(var(--accent-rgb), 0.55); transform: translateY(-2px); }

/* ---------- Etiquetas (tags) ---------- */
.tags { display: flex; flex-wrap: wrap; gap: 0.45rem; }
.tag {
  font-family: var(--font-mono); font-size: 0.74rem; line-height: 1;
  padding: 0.4rem 0.65rem; border-radius: 8px;
  color: var(--accent); background: rgba(var(--accent-rgb), 0.08);
  border: 1px solid rgba(var(--accent-rgb), 0.22);
}