/* ============================================================
   G-IA · main.css
   Variables · reset · tipografía · utilidades
   ============================================================ */

:root {
  /* Paleta */
  --violet: #7C3AED;
  --violet-dark: #5B21B6;
  --violet-bg: #EDE9FE;
  --cyan: #0891B2;
  --lime: #65A30D;
  --bg: #F9F9FC;
  --bg-alt: #F3F3F8;
  --surface: #FFFFFF;
  --text: #0F0F1A;
  --text2: #4B4B6A;
  --text3: #9090A8;
  --border: rgba(0, 0, 0, 0.08);

  /* Sombras */
  --shadow-card: 0 2px 12px rgba(0, 0, 0, 0.06);
  --shadow-card-hover: 0 12px 32px rgba(15, 15, 26, 0.12);

  /* Radios */
  --radius: 16px;
  --radius-sm: 10px;
  --radius-pill: 999px;

  /* Layout */
  --maxw: 1140px;
  --nav-h: 68px;

  /* Tipografía */
  --font-display: 'Space Grotesk', system-ui, sans-serif;
  --font-mono: 'Space Mono', ui-monospace, monospace;

  /* Transición global */
  --t: 0.2s ease;

  /* Gradiente marca */
  --grad: linear-gradient(120deg, var(--violet), var(--cyan));
}

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

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

body {
  font-family: var(--font-display);
  font-weight: 400;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
ul { list-style: none; }
input { font-family: inherit; }

/* ---------- Tipografía ---------- */
h1, h2, h3, h4 {
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -1px;
}

h1 { letter-spacing: -1.5px; }

/* ---------- Layout ---------- */
.container {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: 24px;
}

.section { padding-block: clamp(64px, 10vw, 112px); }

.section__head {
  text-align: center;
  max-width: 640px;
  margin-inline: auto;
  margin-bottom: clamp(40px, 6vw, 64px);
}

.section__label {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--violet);
  margin-bottom: 16px;
}

.section__title {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  color: var(--text);
}

.section__subtitle {
  margin-top: 18px;
  color: var(--text2);
  font-size: 1.05rem;
}

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

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
  transition: transform var(--t), box-shadow var(--t);
}

/* ---------- Badge ---------- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.5px;
  color: var(--text2);
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 7px 14px;
  border-radius: var(--radius-pill);
  box-shadow: var(--shadow-card);
}

.badge__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--lime);
  box-shadow: 0 0 0 0 rgba(101, 163, 13, 0.5);
  animation: pulse-dot 2s infinite;
}

@keyframes pulse-dot {
  0%   { box-shadow: 0 0 0 0 rgba(101, 163, 13, 0.5); }
  70%  { box-shadow: 0 0 0 8px rgba(101, 163, 13, 0); }
  100% { box-shadow: 0 0 0 0 rgba(101, 163, 13, 0); }
}

/* ---------- Botones ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 0.95rem;
  letter-spacing: -0.2px;
  padding: 12px 22px;
  border-radius: var(--radius-pill);
  border: 1px solid transparent;
  transition: transform var(--t), box-shadow var(--t), background var(--t), border-color var(--t), color var(--t);
  white-space: nowrap;
}

.btn:active { transform: translateY(1px); }

.btn--primary {
  background: var(--violet);
  color: #fff;
  box-shadow: 0 4px 16px rgba(124, 58, 237, 0.28);
}
.btn--primary:hover {
  background: var(--violet-dark);
  box-shadow: 0 8px 22px rgba(124, 58, 237, 0.36);
  transform: translateY(-1px);
}

.btn--secondary {
  background: var(--surface);
  color: var(--text);
  border-color: var(--border);
  box-shadow: var(--shadow-card);
}
.btn--secondary:hover {
  border-color: var(--violet);
  color: var(--violet);
  transform: translateY(-1px);
}

.btn--sm { padding: 9px 16px; font-size: 0.88rem; }
.btn--lg { padding: 15px 28px; font-size: 1.02rem; }

/* ---------- Accesibilidad ---------- */
:focus-visible {
  outline: 2px solid var(--violet);
  outline-offset: 2px;
  border-radius: 4px;
}

@media (prefers-reduced-motion: reduce) {
  * { animation-duration: 0.001ms !important; transition-duration: 0.001ms !important; scroll-behavior: auto !important; }
}