/* 
  STEEL MH FOUNDATION SYSTEM v1.0.0
  Principio: Todo medido por Fibonacci. Nada al azar.
  Ratio: 1.618 (Phi)
*/

:root {
  /* --- FIBONACCI SCALE --- */
  --fib-8: 8px;
  --fib-13: 13px;
  --fib-21: 21px;
  --fib-34: 34px;
  --fib-55: 55px;
  --fib-89: 89px;
  --fib-144: 144px;

  --phi: 1.618;

  /* --- TIPOGRAFIA 80/20 --- */
  --font-display: 'Space Grotesk', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  /* --- COLOR - ACERO INSTITUCIONAL --- */
  --steel-base: #0A0A0A;
  --steel-surface: #111111;
  --steel-border: #1A1A1A;
  --steel-text: #E8E8E8;
  --steel-muted: #9A9A9A;
  --steel-gold: #D4AF37;
  --steel-gold-soft: rgba(212, 175, 55, 0.12);

  /* --- LAYOUT AUREO --- */
  --content-max: 1200px;
  --content-golden: 742px; /* 1200 / 1.618 */
}

/* Reset base para Steel */
body {
  background: var(--steel-base);
  color: var(--steel-text);
  font-family: var(--font-display);
  -webkit-font-smoothing: antialiased;
}

/* Escala tipografica Fibonacci */
h1 { font-family: var(--font-display); font-size: clamp(34px, 6vw, 89px); line-height: 0.95; letter-spacing: -0.02em; font-weight: 700; }
h2 { font-family: var(--font-display); font-size: clamp(28px, 4vw, 55px); line-height: 1.05; }
h3 { font-family: var(--font-display); font-size: var(--fib-34); line-height: 1.1; }

.text-mono {
  font-family: var(--font-mono);
  font-size: var(--fib-13);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--steel-muted);
}

.btn-steel {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: var(--fib-55);
  padding: 0 var(--fib-34);
  border: 1px solid var(--steel-gold);
  color: var(--steel-gold);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  background: transparent;
  transition: all 0.3s ease;
}
.btn-steel:hover {
  background: var(--steel-gold);
  color: var(--steel-base);
}

/* Espaciado aureo para secciones */
.section-phi {
  padding: var(--fib-89) 0;
  border-bottom: 1px solid var(--steel-border);
}
@media (max-width: 768px) {
  .section-phi { padding: var(--fib-55) 0; }
}