/* ============================================================
   OCEANAVAL — Sistema de diseño "Holographic Blueprint"
   Tokens, reset, tipografía y utilidades base.
   ============================================================ */

/* ---------- Tokens ---------- */
:root {
  /* Paleta — navy abisal + acento cian técnico (glow del wireframe del cliente) */
  --c-abyss:      oklch(18% 0.045 250);   /* #0A1A2F navy abisal (fondo) */
  --c-deep:       oklch(24% 0.052 250);   /* navy profundo (paneles) */
  --c-steel:      oklch(38% 0.045 245);   /* azul acero (bordes/UI) */
  --c-slate:      oklch(63% 0.035 240);   /* texto secundario — AA 4.5:1 sobre abyss y deep */
  --c-field-border: oklch(50% 0.05 240);  /* borde de campos — AA 3:1 (UI) */
  --c-placeholder:  oklch(63% 0.035 240); /* placeholder legible */
  --c-mist:       oklch(82% 0.018 235);   /* texto cuerpo claro */
  --c-paper:      oklch(96.5% 0.006 230); /* blanco roto */
  --c-white:      oklch(99% 0.003 230);

  --c-cyan:       oklch(78% 0.13 215);    /* #3FC9E0 acento cian técnico */
  --c-cyan-bright:oklch(85% 0.15 210);    /* glow brillante */
  --c-cyan-deep:  oklch(55% 0.11 225);    /* cian apagado para fondos */

  /* Tintes funcionales */
  --c-line:        oklch(100% 0 0 / 0.09);   /* líneas de retícula sobre oscuro */
  --c-line-strong: oklch(100% 0 0 / 0.16);
  --c-line-dark:   oklch(18% 0.04 250 / 0.12); /* líneas sobre claro */
  --c-glass:       oklch(24% 0.05 250 / 0.55);

  /* Tipografía */
  --f-display: "Space Grotesk", "Helvetica Neue", system-ui, sans-serif;
  --f-mono:    "IBM Plex Mono", ui-monospace, "SFMono-Regular", monospace;
  --f-serif:   "Newsreader", Georgia, "Times New Roman", serif;

  /* Escala tipográfica fluida */
  --t-mega:  clamp(3.2rem, 11vw, 13rem);
  --t-h1:    clamp(2.6rem, 7vw, 6rem);
  --t-h2:    clamp(2rem, 4.5vw, 3.6rem);
  --t-h3:    clamp(1.4rem, 2.4vw, 2rem);
  --t-lead:  clamp(1.15rem, 1.8vw, 1.55rem);
  --t-body:  clamp(1rem, 1.05vw, 1.125rem);
  --t-small: 0.8125rem;
  --t-micro: 0.6875rem;

  /* Espaciado (ritmo armónico base 8) */
  --s-1: 0.5rem;   --s-2: 1rem;    --s-3: 1.5rem;  --s-4: 2rem;
  --s-5: 3rem;     --s-6: 4rem;    --s-7: 6rem;    --s-8: 8rem;
  --s-9: 11rem;    --s-10: 15rem;

  --section-y: clamp(5rem, 12vh, 11rem);
  --gutter:    clamp(1.25rem, 5vw, 5rem);
  --maxw:      88rem;

  /* Motion */
  --ease-out:  cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --ease-expo: cubic-bezier(0.19, 1, 0.22, 1);
  --d-fast: 0.3s;
  --d-base: 0.6s;
  --d-slow: 1s;

  --radius: 2px;       /* esquinas casi rectas, técnicas */
  --header-h: 5rem;
}

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}
html.lenis, html.lenis body { height: auto; }
.lenis.lenis-smooth { scroll-behavior: auto !important; }
.lenis.lenis-stopped { overflow: hidden; }

body {
  font-family: var(--f-serif);
  font-size: var(--t-body);
  line-height: 1.65;
  color: var(--c-mist);
  background: var(--c-abyss);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  text-rendering: optimizeLegibility;
}

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

::selection { background: var(--c-cyan); color: var(--c-abyss); }

/* ---------- Tipografía ---------- */
h1, h2, h3, h4 {
  font-family: var(--f-display);
  font-weight: 600;
  line-height: 1.02;
  letter-spacing: -0.02em;
  color: var(--c-paper);
  text-wrap: balance;
}

.kicker {
  font-family: var(--f-mono);
  font-size: var(--t-small);
  font-weight: 500;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--c-cyan);
  display: inline-flex;
  align-items: center;
  gap: 0.75em;
}
.kicker::before {
  content: "";
  width: 2.5rem;
  height: 1px;
  background: var(--c-cyan);
  opacity: 0.7;
}
.kicker--center::before { display: none; }

.lead {
  font-family: var(--f-serif);
  font-size: var(--t-lead);
  line-height: 1.55;
  color: var(--c-mist);
}

.mono { font-family: var(--f-mono); }
.serif { font-family: var(--f-serif); }
.display { font-family: var(--f-display); }

/* ---------- Layout ---------- */
.wrap { width: 100%; max-width: var(--maxw); margin-inline: auto; padding-inline: var(--gutter); }
.wrap--wide { max-width: 100rem; }
.section { padding-block: var(--section-y); position: relative; }

/* Retícula técnica de fondo (líneas finas tipo plano) */
.grid-lines {
  position: absolute; inset: 0; z-index: 0; pointer-events: none;
  background-image:
    linear-gradient(var(--c-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--c-line) 1px, transparent 1px);
  background-size: clamp(60px, 8vw, 120px) clamp(60px, 8vw, 120px);
  mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, #000 30%, transparent 80%);
  opacity: 0.55;
}

/* ---------- Botones ---------- */
.btn {
  --bg: var(--c-cyan);
  --fg: var(--c-abyss);
  display: inline-flex; align-items: center; gap: 0.7em;
  font-family: var(--f-mono);
  font-size: var(--t-small);
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  padding: 1.05em 1.9em;
  background: var(--bg);
  color: var(--fg);
  border-radius: var(--radius);
  position: relative;
  overflow: hidden;
  transition: transform var(--d-fast) var(--ease-out), box-shadow var(--d-fast) var(--ease-out);
  isolation: isolate;
}
.btn::after {
  content: ""; position: absolute; inset: 0; z-index: -1;
  background: var(--c-cyan-bright);
  transform: translateY(101%);
  transition: transform 0.45s var(--ease-out);
}
.btn:hover { transform: translateY(-2px); box-shadow: 0 12px 30px -12px var(--c-cyan); }
.btn:hover::after { transform: translateY(0); }
.btn .arrow { transition: transform var(--d-fast) var(--ease-out); }
.btn:hover .arrow { transform: translateX(4px); }

.btn--ghost {
  --bg: transparent;
  --fg: var(--c-paper);
  border: 1px solid var(--c-line-strong);
}
.btn--ghost::after { background: var(--c-cyan); }
.btn--ghost:hover { color: var(--c-abyss); box-shadow: none; }

/* Link con subrayado animado */
.link-u {
  position: relative; color: var(--c-paper);
  font-family: var(--f-mono); font-size: var(--t-small);
  letter-spacing: 0.1em; text-transform: uppercase;
}
.link-u::after {
  content: ""; position: absolute; left: 0; bottom: -4px; width: 100%; height: 1px;
  background: var(--c-cyan); transform: scaleX(0); transform-origin: right;
  transition: transform var(--d-base) var(--ease-out);
}
.link-u:hover::after { transform: scaleX(1); transform-origin: left; }

/* ---------- Foco accesible ---------- */
:focus-visible {
  outline: 2px solid var(--c-cyan);
  outline-offset: 3px;
  border-radius: var(--radius);
}

.skip-link {
  position: absolute; left: 1rem; top: -100px; z-index: 200;
  background: var(--c-cyan); color: var(--c-abyss);
  padding: 0.75rem 1.25rem; font-family: var(--f-mono); font-size: var(--t-small);
  border-radius: var(--radius); transition: top var(--d-fast);
}
.skip-link:focus { top: 1rem; }

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

/* ---------- Helpers de acento ---------- */
.t-cyan { color: var(--c-cyan); }
.t-paper { color: var(--c-paper); }
.t-mist { color: var(--c-mist); }

.divider {
  height: 1px; width: 100%;
  background: linear-gradient(90deg, transparent, var(--c-line-strong) 20%, var(--c-line-strong) 80%, transparent);
}

/* ---------- Etiqueta técnica (cota / índice) ---------- */
.tag-index {
  font-family: var(--f-mono);
  font-size: var(--t-small);
  color: var(--c-cyan);
  letter-spacing: 0.1em;
}

/* ---------- Movimiento reducido ---------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
  html { scroll-behavior: auto; }
}