/* QualtiaLabs — hoja de estilos principal
   Branding definitivo (ver DESIGN_DECISIONS.md y /design-experiments/moodboard.html):
   estética de laboratorio nocturno; Cian Qualtia + Violeta Órbita sobre Azul Abisal.
   Tipografías auto-hospedadas (OFL): Space Grotesk (títulos) + Inter (texto).
   Todos los pares de color validados WCAG 2.1 AA. */

@font-face {
  font-family: "Space Grotesk";
  src: url("/fonts/space-grotesk-latin-500-normal.woff2") format("woff2");
  font-weight: 500;
  font-display: swap;
}
@font-face {
  font-family: "Space Grotesk";
  src: url("/fonts/space-grotesk-latin-700-normal.woff2") format("woff2");
  font-weight: 700;
  font-display: swap;
}
@font-face {
  font-family: "Inter";
  src: url("/fonts/inter-latin-400-normal.woff2") format("woff2");
  font-weight: 400;
  font-display: swap;
}
@font-face {
  font-family: "Inter";
  src: url("/fonts/inter-latin-600-normal.woff2") format("woff2");
  font-weight: 600;
  font-display: swap;
}

:root {
  /* Paleta QualtiaLabs */
  --bg: #070b14;          /* Azul Abisal — fondo base */
  --bg-alt: #0b1120;      /* Azul Abisal claro — secciones alternas */
  --surface: #101a2e;     /* Superficie — tarjetas */
  --surface-2: #16223c;   /* Superficie elevada — inputs, chips */
  --border: rgba(120, 160, 255, 0.14);
  --text: #e8edf7;        /* Texto principal */
  --text-dim: #9aa7bf;    /* Texto secundario */
  --accent: #38e1ff;      /* Cian Qualtia — acción, energía, descubrimiento */
  --accent-2: #8b7bff;    /* Violeta Órbita — profundidad, órbitas, ABC-TI */
  --ok: #3ddc97;          /* Verde Validado */
  --warn: #ffc24b;        /* Ámbar En-Evaluación */
  --font: "Inter", "Segoe UI", system-ui, -apple-system, sans-serif;
  --font-display: "Space Grotesk", "Inter", system-ui, sans-serif;
  --radius: 14px;
  --container: 1120px;
}

h1, h2, h3, legend,
.brand-name, .hero-tag, .cycle-num, .status, .badge, .method-closing {
  font-family: var(--font-display);
}
h3 { font-weight: 500; }

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: 84px; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }

/* ---------- Accesibilidad ---------- */

.skip-link {
  position: absolute; left: -9999px; top: 0;
  background: var(--accent); color: #04222b; padding: 10px 18px;
  border-radius: 0 0 8px 0; z-index: 100; font-weight: 600;
}
.skip-link:focus { left: 0; }

:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 4px; }

/* ---------- Header ---------- */

.site-header {
  position: fixed; inset: 0 0 auto 0; z-index: 50;
  background: rgba(7, 11, 20, 0.82);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.header-inner { display: flex; align-items: center; gap: 28px; height: 68px; }

.brand { display: flex; align-items: center; gap: 10px; color: var(--text); }
.brand:hover { text-decoration: none; }
.brand-mark { width: 30px; height: 30px; color: var(--accent); }
.brand-name { font-size: 1.15rem; letter-spacing: 0.02em; }
.brand-name strong { color: var(--accent); font-weight: 700; }

.site-nav { flex: 1; }
.nav-menu { display: flex; gap: 22px; list-style: none; }
.nav-menu a { color: var(--text-dim); font-size: 0.92rem; }
.nav-menu a:hover { color: var(--text); text-decoration: none; }
.nav-abcti a { color: var(--accent-2); }

.nav-toggle { display: none; background: none; border: 0; cursor: pointer; padding: 8px; }
.nav-toggle span { display: block; width: 22px; height: 2px; background: var(--text); margin: 5px 0; transition: 0.2s; }

.header-actions { display: flex; align-items: center; gap: 18px; }
.lang-switch { display: flex; gap: 8px; color: var(--text-dim); font-size: 0.9rem; }
.lang-switch a { color: var(--text-dim); font-weight: 600; }
.lang-switch a[aria-current="true"] { color: var(--accent); }

/* ---------- Botones ---------- */

.btn {
  display: inline-block; padding: 13px 26px; border-radius: 999px;
  font-weight: 600; font-size: 0.95rem; border: 1px solid transparent;
  cursor: pointer; transition: transform 0.15s, box-shadow 0.15s, background 0.15s;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn-primary {
  background: linear-gradient(120deg, var(--accent), var(--accent-2));
  color: #050a12;
}
.btn-primary:hover { box-shadow: 0 6px 24px rgba(56, 225, 255, 0.35); }
.btn-ghost { border-color: var(--border); color: var(--text); background: rgba(255,255,255,0.03); }
.btn-sm { padding: 9px 18px; font-size: 0.85rem; }

/* ---------- Hero ---------- */

.hero {
  position: relative; min-height: 100svh;
  display: grid; align-items: center;
  overflow: hidden; padding-top: 68px;
}
#hero-canvas { position: absolute; inset: 0; width: 100%; height: 100%; }
.hero-content { position: relative; z-index: 1; max-width: 800px; }
.hero-tag {
  color: var(--accent); font-size: 0.8rem; letter-spacing: 0.22em;
  font-weight: 600; margin-bottom: 18px;
}
.hero-title { font-size: clamp(2.1rem, 5.4vw, 3.7rem); line-height: 1.12; font-weight: 800; }
.hero-title span { display: block; }
.hero-title .accent {
  background: linear-gradient(120deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero-desc { margin: 22px 0 30px; max-width: 560px; color: var(--text-dim); font-size: 1.1rem; }
.hero-ctas { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-eco { display: inline-block; margin-top: 26px; color: var(--accent-2); font-size: 0.95rem; }

/* ---------- Secciones ---------- */

.section { padding: 96px 0; }
.section--alt { background: var(--bg-alt); }
.section-title { font-size: clamp(1.6rem, 3.4vw, 2.3rem); font-weight: 750; margin-bottom: 14px; }
.section-lead { color: var(--text-dim); font-size: 1.12rem; max-width: 680px; margin-bottom: 40px; }
.section-sub { color: var(--accent); font-weight: 600; letter-spacing: 0.04em; margin-bottom: 34px; }

.card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 26px;
}

/* ---------- Qué es ---------- */

.about-grid { display: grid; grid-template-columns: 1.2fr 1fr; gap: 44px; }
.about-grid p + p { margin-top: 14px; }
.role-cards { display: grid; gap: 16px; }
.role-card h3 { margin-bottom: 8px; }
.role-card--accent { border-color: rgba(56, 225, 255, 0.35); }
.role-card--accent h3 { color: var(--accent); }
.role-card p { color: var(--text-dim); font-size: 0.97rem; }

/* ---------- Ciclo de experimentación ---------- */

.cycle {
  display: grid; grid-template-columns: repeat(6, 1fr);
  gap: 14px; list-style: none; margin: 36px 0 18px;
}
.cycle-step {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 18px 16px; text-align: center;
  position: relative;
}
.cycle-step::after {
  content: "→"; position: absolute; right: -14px; top: 50%;
  transform: translateY(-50%); color: var(--accent); font-weight: 700;
}
.cycle-step:last-of-type::after { content: ""; }
.cycle-num { display: block; color: var(--accent); font-size: 0.8rem; font-weight: 700; margin-bottom: 6px; }
.cycle-name { font-weight: 600; font-size: 0.95rem; }
.cycle-loop { grid-column: 1 / -1; text-align: center; color: var(--accent-2); list-style: none; font-size: 0.95rem; }
.cycle-note { color: var(--text-dim); text-align: center; }

/* ---------- Metodología: escalera ---------- */

.method-ladder { display: grid; gap: 12px; margin-bottom: 44px; }
.ladder-row {
  display: grid; grid-template-columns: 220px 1fr; gap: 22px;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 20px 24px;
  border-left: 3px solid var(--accent);
}
.ladder-row h3 { color: var(--accent); font-size: 1.05rem; }
.ladder-row p { color: var(--text-dim); font-size: 0.97rem; }
.ladder-q { margin-top: 6px; color: var(--accent-2) !important; font-style: italic; }
.method-intro { text-align: center; color: var(--text-dim); font-style: italic; margin-bottom: 48px; }

/* ---------- Componente orbital (§7) ---------- */

.orbital-wrap {
  display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(280px, 1fr);
  gap: 30px; align-items: center;
}
.orbital { position: relative; aspect-ratio: 1; max-width: 560px; margin: 0 auto; width: 100%; }
.orbital svg { width: 100%; height: 100%; display: block; }

.orbital-panel { min-height: 300px; }
.orbital-panel .card { animation: panel-in 0.3s ease; }
@keyframes panel-in { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }
.orbital-panel h3 { margin-bottom: 4px; }
.orbital-panel .status { margin-bottom: 14px; display: inline-block; }
.orbital-panel .panel-label {
  font-size: 0.78rem; letter-spacing: 0.14em; color: var(--text-dim);
  text-transform: uppercase; margin: 16px 0 6px;
}

.status { font-size: 0.8rem; font-weight: 700; letter-spacing: 0.06em; }
.status--completado { color: var(--ok); }
.status--en_curso { color: var(--accent); }
.status--pendiente { color: var(--text-dim); }

.progress {
  height: 8px; border-radius: 999px; background: rgba(255,255,255,0.08);
  overflow: hidden; margin: 8px 0 4px;
}
.progress span {
  display: block; height: 100%; border-radius: 999px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  transition: width 0.6s ease;
}

.atom-list { list-style: none; margin-top: 8px; }
.atom-list li { padding: 7px 0 7px 22px; position: relative; color: var(--text-dim); font-size: 0.95rem; border-bottom: 1px solid var(--border); }
.atom-list li:last-child { border-bottom: 0; }
.atom-list li::before {
  content: ""; position: absolute; left: 4px; top: 50%; transform: translateY(-50%);
  width: 7px; height: 7px; border-radius: 50%; background: var(--accent-2);
}

.demo-note { text-align: center; color: var(--text-dim); font-size: 0.82rem; margin-top: 18px; }
.method-closing { text-align: center; font-size: 1.3rem; margin-top: 56px; }
.method-closing strong {
  background: linear-gradient(120deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}

/* Secuencia vertical para móvil (§16) */
.orbital-mobile { display: none; }
.orbital-mobile-nucleus { text-align: center; font-weight: 700; font-size: 1.1rem; margin-bottom: 18px; color: var(--accent); }
.orbit-card { margin-bottom: 16px; }
.orbit-card header { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; flex-wrap: wrap; margin-bottom: 8px; }
.orbit-objective { color: var(--text-dim); font-size: 0.95rem; margin-bottom: 10px; }

/* ---------- IA con criterio ---------- */

.ai-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 16px; }
.ai-card h3 { color: var(--accent); margin-bottom: 8px; font-size: 1.08rem; }
.ai-card p { color: var(--text-dim); font-size: 0.95rem; }
.ai-levels { margin-top: 48px; max-width: 720px; }
.ai-levels h3 { margin-bottom: 8px; }
.ai-levels p { color: var(--text-dim); margin-bottom: 16px; }
.levels { display: flex; flex-wrap: wrap; gap: 10px; list-style: none; counter-reset: lvl; }
.levels li {
  counter-increment: lvl;
  background: var(--surface-2); border: 1px solid var(--border);
  border-radius: 999px; padding: 8px 18px; font-size: 0.9rem;
}
.levels li::before { content: counter(lvl) " · "; color: var(--accent); font-weight: 700; }

/* ---------- Demo 3D interactiva (Spline + spotlight) ---------- */

.section--demo3d { padding-top: 0; }
.spline-card {
  position: relative; overflow: hidden; padding: 0;
  display: grid; grid-template-columns: 1fr 1fr;
  min-height: 500px;
  background: #05070d;
}
.spline-copy {
  position: relative; z-index: 2;
  display: flex; flex-direction: column; justify-content: center;
  padding: 48px;
}
.spline-copy h2 {
  font-size: clamp(1.7rem, 3.6vw, 2.5rem); line-height: 1.15;
  margin-bottom: 16px;
  background: linear-gradient(180deg, var(--text), var(--text-dim));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.spline-copy p:last-child { color: var(--text-dim); max-width: 460px; }

.spline-stage { position: relative; min-height: 500px; }
.spline-canvas { position: absolute; inset: 0; width: 100%; height: 100%; display: block; }

.spline-loader {
  position: absolute; inset: 0; z-index: 1;
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 14px;
  color: var(--text-dim); font-size: 0.9rem;
}
.spline-ready .spline-loader, .spline-error .spline-loader { display: none; }
.loader {
  width: 36px; height: 36px; border-radius: 50%;
  border: 3px solid rgba(232, 237, 247, 0.18); border-top-color: var(--accent);
  animation: spline-spin 0.9s linear infinite;
}
@keyframes spline-spin { to { transform: rotate(360deg); } }

.spline-load {
  position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); z-index: 3;
}
.spline-fallback {
  display: none; position: absolute; inset: 0; z-index: 1;
  align-items: center; justify-content: center; text-align: center;
  padding: 24px; color: var(--text-dim); font-size: 0.92rem;
}
.spline-error .spline-fallback { display: flex; }

.spline-spotlight {
  pointer-events: none; position: absolute; left: 0; top: 0; z-index: 1;
  width: 240px; height: 240px; border-radius: 50%;
  background: radial-gradient(circle at center,
    rgba(232, 237, 247, 0.26), rgba(139, 123, 255, 0.12) 45%, transparent 78%);
  filter: blur(26px); will-change: transform;
  opacity: 0; transition: opacity 0.25s ease;
}
.spline-card.spot-on .spline-spotlight { opacity: 1; }

/* ---------- Laboratorio ---------- */

.lab-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 18px; }
.lab-card h3 { color: var(--accent); margin-bottom: 8px; }
.lab-card > p { color: var(--text-dim); font-size: 0.95rem; margin-bottom: 14px; }
.tech-list { list-style: none; }
.tech-list li {
  display: flex; justify-content: space-between; align-items: center; gap: 10px;
  padding: 8px 0; border-bottom: 1px solid var(--border); font-size: 0.93rem;
}
.tech-list li:last-child { border-bottom: 0; }
.badge { font-size: 0.72rem; font-weight: 700; padding: 3px 10px; border-radius: 999px; white-space: nowrap; }
.badge--validada { background: rgba(61, 220, 151, 0.15); color: var(--ok); }
.badge--en_experimentacion { background: rgba(56, 225, 255, 0.13); color: var(--accent); }
.badge--en_evaluacion { background: rgba(255, 194, 75, 0.13); color: var(--warn); }

/* ---------- Seguridad / Sustentabilidad ---------- */

.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; }
.security-quote {
  border-left: 3px solid var(--accent); padding: 6px 0 6px 18px;
  color: var(--text); font-size: 1.12rem; font-style: italic; margin: 18px 0 22px;
}
.check-list { list-style: none; }
.check-list li { padding: 8px 0 8px 30px; position: relative; color: var(--text-dim); }
.check-list li::before { content: "✓"; position: absolute; left: 0; color: var(--ok); font-weight: 700; }
.sust-note { margin-top: 16px; color: var(--accent); font-size: 0.97rem; }

/* ---------- Ecosistema ---------- */

.eco-flow {
  display: flex; align-items: center; justify-content: center; flex-wrap: wrap;
  gap: 10px; list-style: none; margin: 30px 0 44px;
}
.eco-node {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 999px; padding: 10px 22px; font-weight: 600; font-size: 0.93rem;
  position: relative;
}
.eco-node:not(:last-child)::after { content: "→"; position: absolute; right: -18px; color: var(--accent); }
.eco-node { margin-right: 18px; }
.eco-node:last-child { margin-right: 0; }
.eco-node--qualtia { border-color: var(--accent); color: var(--accent); }
.eco-cards { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; max-width: 760px; margin: 0 auto; }
.eco-cards h3 { margin-bottom: 8px; }
.eco-cards p { color: var(--text-dim); font-size: 0.95rem; margin-bottom: 10px; }

/* ---------- Formulario wizard (§12) ---------- */

.section--form { background: radial-gradient(80% 90% at 50% 0%, rgba(56, 225, 255, 0.07), transparent), var(--bg); }
.lead-form { max-width: 640px; margin: 0 auto; padding: 34px; }
.hp { position: absolute; left: -9999px; opacity: 0; }

.wizard-step h3 { margin-bottom: 18px; font-size: 1.15rem; }
.option-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.option-btn {
  text-align: left; padding: 14px 16px; border-radius: 10px;
  border: 1px solid var(--border); background: var(--surface-2);
  color: var(--text); font: inherit; font-size: 0.93rem; cursor: pointer;
  transition: border-color 0.15s, background 0.15s;
}
.option-btn:hover { border-color: var(--accent); }
.option-btn[aria-pressed="true"] { border-color: var(--accent); background: rgba(56, 225, 255, 0.1); }

.field { margin-bottom: 16px; }
.field label { display: block; font-size: 0.88rem; font-weight: 600; margin-bottom: 6px; }
.field input[type="text"], .field input[type="email"], .field textarea {
  width: 100%; padding: 12px 14px; border-radius: 10px;
  border: 1px solid var(--border); background: var(--surface-2);
  color: var(--text); font: inherit;
}
.field textarea { min-height: 110px; resize: vertical; }
.field input:focus, .field textarea:focus { outline: 2px solid var(--accent); outline-offset: 1px; }
.field-error { color: #ff8a8a; font-size: 0.82rem; margin-top: 5px; display: none; }
.field.invalid .field-error { display: block; }
.field.invalid input, .field.invalid textarea { border-color: #ff8a8a; }

.consent { display: flex; gap: 10px; align-items: flex-start; font-size: 0.88rem; color: var(--text-dim); }
.consent input { margin-top: 4px; accent-color: var(--accent); }

.wizard-nav { display: flex; justify-content: space-between; gap: 12px; margin-top: 26px; }
.wizard-progress { display: flex; gap: 6px; margin-bottom: 24px; }
.wizard-progress span { height: 4px; flex: 1; border-radius: 4px; background: rgba(255,255,255,0.1); }
.wizard-progress span.done { background: linear-gradient(90deg, var(--accent), var(--accent-2)); }

.wizard-result { text-align: center; padding: 30px 10px; }
.wizard-result h3 { font-size: 1.4rem; margin-bottom: 10px; color: var(--ok); }
.wizard-result.error h3 { color: var(--warn); }
.wizard-result p { color: var(--text-dim); }

/* ---------- Contacto / Footer ---------- */

.contact-inner { text-align: center; }
.contact-inner .section-lead { margin-inline: auto; }
.contact-actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

.site-footer { border-top: 1px solid var(--border); padding: 54px 0 34px; background: var(--bg-alt); }
.footer-inner { display: grid; gap: 26px; }
.footer-brand p { color: var(--text-dim); font-size: 0.92rem; margin: 8px 0; }
.footer-eco { color: var(--accent-2); font-size: 0.9rem; }
.footer-nav { display: flex; gap: 20px; flex-wrap: wrap; }
.footer-nav a { color: var(--text-dim); font-size: 0.9rem; }
.footer-legal { color: var(--text-dim); font-size: 0.82rem; }

/* ---------- Página legal (aviso de privacidad) ---------- */

.legal-page { padding-top: 140px; }
.legal-container { max-width: 760px; }
.legal-updated { color: var(--text-dim); font-size: 0.85rem; margin-bottom: 22px; }
.legal-intro { color: var(--text-dim); font-size: 1.05rem; margin-bottom: 34px; }
.legal-section { margin-bottom: 30px; }
.legal-section h2 { font-size: 1.15rem; color: var(--accent); margin-bottom: 10px; }
.legal-section p { color: var(--text-dim); margin-bottom: 10px; font-size: 0.97rem; }
.legal-back { margin-top: 44px; }

/* ---------- Animaciones de aparición ---------- */

.reveal { opacity: 0; transform: translateY(18px); transition: opacity 0.6s ease, transform 0.6s ease; transition-delay: calc(var(--i, 0) * 60ms); }
.reveal.in { opacity: 1; transform: none; }

/* Sin JS o con movimiento reducido: todo visible (§16, §28) */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  * { animation-duration: 0.001s !important; transition-duration: 0.001s !important; }
}
.no-js .reveal { opacity: 1; transform: none; }

/* ---------- Responsive (§16) ---------- */

@media (max-width: 960px) {
  .about-grid, .two-col { grid-template-columns: 1fr; gap: 30px; }
  .spline-card { grid-template-columns: 1fr; min-height: 0; }
  .spline-copy { padding: 34px 26px 10px; }
  .spline-stage { min-height: 360px; }
  .cycle { grid-template-columns: repeat(3, 1fr); }
  .cycle-step::after { content: ""; }
  .orbital-wrap { grid-template-columns: 1fr; }
  .orbital-panel { min-height: 0; }
  .nav-menu {
    position: fixed; inset: 68px 0 auto 0; flex-direction: column;
    background: var(--bg-alt); border-bottom: 1px solid var(--border);
    padding: 20px 24px; gap: 16px; display: none;
  }
  .nav-menu.open { display: flex; }
  .nav-toggle { display: block; }
}

@media (max-width: 700px) {
  .section { padding: 68px 0; }
  /* En móvil no se fuerza la visualización orbital (§16): secuencia vertical */
  .orbital-wrap, .demo-note { display: none; }
  .orbital-mobile { display: block; }
  .option-grid { grid-template-columns: 1fr; }
  .ladder-row { grid-template-columns: 1fr; gap: 6px; }
  .eco-cards { grid-template-columns: 1fr; }
  .header-actions .btn { display: none; }
}