/* ============================================================
   base.css
   Variables globales, reset, tipografía, utilidades compartidas.
   Este archivo se importa PRIMERO en index.html.
   ============================================================ */

/* ── Variables ──────────────────────────────────────────────── */
:root {
  /* Colores */
  --clr-bg:          #080808;
  --clr-bg-2:        #0e0e0e;
  --clr-surface:     #131313;
  --clr-border:      rgba(255, 255, 255, 0.06);
  --clr-border-md:   rgba(255, 255, 255, 0.12);
  --clr-text:        #e8e2d9;
  --clr-text-muted:  #c9c2bc;
  --clr-text-dim:    #757473;
  --clr-accent:      #c8933a;           /* amber industrial */
  --clr-accent-dim:  rgba(200, 147, 58, 0.12);
  --clr-accent-glow: rgba(200, 147, 58, 0.25);
  --clr-white:       #ffffff;

  /* Tipografía */
  --font-display: 'Barlow Condensed', sans-serif;
  --font-body:    'Barlow', sans-serif;

  /* Layout */
  --nav-h:        72px;
  --container-w:  1380px;
  --container-px: 2rem;

  /* Curvas de animación */
  --ease:     cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --ease-out: cubic-bezier(0.0,  0.0,  0.2,  1);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  background: var(--clr-bg);
  color: var(--clr-text);
  font-family: var(--font-body);
  font-weight: 300;
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

img, svg { display: block; }

a { color: inherit; }

/* ── Utilidades compartidas entre secciones ─────────────────── */

/* Contenedor centrado */
.container {
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 0 var(--container-px);
}

/* Separador horizontal */
.section-rule {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--clr-border-md), transparent);
}

/* Etiqueta de sección (eyebrow) */
.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-display);
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--clr-accent);
}

.section-tag::before {
  content: '';
  display: block;
  width: 24px;
  height: 1px;
  background: var(--clr-accent);
  flex-shrink: 0;
}

/* Botones */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.82rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  text-decoration: none;
  border-radius: 3px;
  cursor: pointer;
  transition: all 0.25s var(--ease);
  white-space: nowrap;
}

.btn--primary {
  padding: 0.85rem 2rem;
  background: var(--clr-accent);
  color: #000;
  border: 1px solid var(--clr-accent);
}

.btn--primary:hover {
  background: #d9a34a;
  border-color: #d9a34a;
  transform: translateY(-2px);
  box-shadow: 0 8px 32px var(--clr-accent-glow);
}

.btn--primary svg {
  transition: transform 0.25s var(--ease);
}

.btn--primary:hover svg {
  transform: translateX(4px);
}

.btn--ghost {
  padding: 0.85rem 1.8rem;
  background: transparent;
  color: var(--clr-text-muted);
  border: 1px solid var(--clr-border-md);
}

.btn--ghost:hover {
  color: var(--clr-white);
  border-color: rgba(255, 255, 255, 0.3);
  background: rgba(255, 255, 255, 0.03);
}

/* ── Scroll reveal ──────────────────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.6s var(--ease), transform 0.6s var(--ease);
}

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

/* ── Secciones placeholder (pendientes) ─────────────────────── */
.placeholder-section {
  min-height: 60vh;
  background: var(--clr-bg-2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: 0.85rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--clr-text-dim);
  border-top: 1px solid var(--clr-border);
}

.placeholder-section--alt {
  background: var(--clr-bg);
}

/* ── Responsive base ────────────────────────────────────────── */
@media (max-width: 480px) {
  :root { --container-px: 1rem; }
}

/* ── Scrollbar (WebKit: Chrome, Edge, Safari) ─────────────── */
::-webkit-scrollbar {
  width: 10px;
}

::-webkit-scrollbar-track {
  background: var(--clr-bg);
}

::-webkit-scrollbar-thumb {
  background: linear-gradient(
    180deg,
    var(--clr-accent),
    #9c6f2b
  );
  border-radius: 6px;
  border: 2px solid var(--clr-bg);
  transition: background 0.3s ease;
}

::-webkit-scrollbar-thumb:hover {
  background: linear-gradient(
    180deg,
    #d9a34a,
    var(--clr-accent)
  );
}

/* ── Scrollbar (Firefox) ───────────────────────────────────── */
* {
  scrollbar-width: thin;
  scrollbar-color: var(--clr-accent) var(--clr-bg);
}

@font-face {
  font-family: 'Cabriolet';
  src: url('../fonts/cabriolet-regular.ttf') format('truetype');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}