/* ══════════════════════════════════════════════════════════
   Coabana — Ingeniería de Datos en Google Cloud
   Tema: caribeño-tech oscuro
   ══════════════════════════════════════════════════════════ */

:root {
  /* Paleta: océano profundo + turquesa + coral + arena */
  --bg: #07131d;
  --bg-2: #0a1926;
  --panel: #0d2030;
  --panel-2: #102638;
  --line: rgba(158, 216, 219, 0.10);
  --line-strong: rgba(158, 216, 219, 0.22);
  --ink: #eaf4f4;
  --muted: #93adbc;
  --turquoise: #2fd6c3;
  --cyan: #4cc9f0;
  --coral: #ff8f6b;
  --sand: #f4d58d;

  --grad-sea: linear-gradient(92deg, var(--turquoise), var(--cyan));
  --grad-sunset: linear-gradient(92deg, var(--coral), var(--sand));

  --font-display: "Space Grotesk", "Segoe UI", system-ui, sans-serif;
  --font-body: "Inter", "Segoe UI", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", "SFMono-Regular", Consolas, monospace;

  --radius: 16px;
  --nav-h: 72px;
  --shadow: 0 18px 50px rgba(2, 8, 14, 0.55);

  /* Superficies y matices dependientes del tema */
  --raise: rgba(255, 255, 255, 0.02);
  --raise-strong: rgba(255, 255, 255, 0.03);
  --card-grad-top: rgba(255, 255, 255, 0.03);
  --card-grad-bottom: rgba(255, 255, 255, 0.008);
  --card-shadow: 0 16px 40px rgba(2, 8, 14, 0.45);
  --chip-bg: rgba(255, 255, 255, 0.025);
  --stack-bg: rgba(7, 19, 29, 0.55);
  --alt-band: rgba(16, 38, 56, 0.45);
  --float-bg: rgba(13, 32, 48, 0.92);
  --float-shadow: 0 10px 26px rgba(2, 8, 14, 0.5);
  --input-bg: rgba(7, 19, 29, 0.7);
  --placeholder-color: rgba(147, 173, 188, 0.5);
  --footer-bg: rgba(5, 13, 20, 0.6);
  --nav-bg: rgba(7, 19, 29, 0.78);
  --nav-bg-scrolled: rgba(7, 19, 29, 0.92);
  --nav-bg-mobile: rgba(7, 19, 29, 0.98);
  --dots-color: rgba(158, 216, 219, 0.09);
  --glow-opacity: 0.16;

  /* Tintes de acento (iguales en ambos temas) */
  --tint-6: rgba(47, 214, 195, 0.06);
  --tint-8: rgba(47, 214, 195, 0.08);
  --tint-14: rgba(47, 214, 195, 0.14);
  --tint-22: rgba(47, 214, 195, 0.22);
  --tint-32: rgba(47, 214, 195, 0.32);
  --tint-35: rgba(47, 214, 195, 0.35);
  --tint-coral-7: rgba(255, 143, 107, 0.07);
  --tint-coral-14: rgba(255, 143, 107, 0.14);
  --tint-coral-35: rgba(255, 143, 107, 0.35);

  /* Motion */
  --t-fast: 0.2s;
  --t-base: 0.25s;
  --t-slow: 0.3s;
  --t-reveal: 0.7s;
}

/* Tema claro: "caribe de día" — arena/papel con los mismos acentos,
   oscurecidos donde hace falta para mantener el contraste */
:root[data-theme="light"] {
  --bg: #f7f4ec;
  --bg-2: #f1ece1;
  --panel: #fffdf8;
  --panel-2: #fbf7ee;
  --line: rgba(9, 55, 66, 0.12);
  --line-strong: rgba(9, 55, 66, 0.24);
  --ink: #0d2531;
  --muted: #48616e;
  --turquoise: #0b8b7d;
  --cyan: #0f7ea6;
  --coral: #c94b28;
  --sand: #8a6a1d;

  --shadow: 0 18px 50px rgba(31, 45, 70, 0.14);
  --raise: rgba(9, 55, 66, 0.03);
  --raise-strong: rgba(9, 55, 66, 0.045);
  --card-grad-top: rgba(9, 55, 66, 0.045);
  --card-grad-bottom: rgba(9, 55, 66, 0.015);
  --card-shadow: 0 16px 40px rgba(31, 45, 70, 0.12);
  --chip-bg: rgba(9, 55, 66, 0.04);
  --stack-bg: rgba(255, 253, 248, 0.72);
  --alt-band: rgba(9, 55, 66, 0.05);
  --float-bg: rgba(255, 253, 248, 0.94);
  --float-shadow: 0 10px 26px rgba(31, 45, 70, 0.18);
  --input-bg: #ffffff;
  --placeholder-color: rgba(81, 112, 126, 0.55);
  --footer-bg: rgba(9, 55, 66, 0.04);
  --nav-bg: rgba(247, 244, 236, 0.8);
  --nav-bg-scrolled: rgba(247, 244, 236, 0.93);
  --nav-bg-mobile: rgba(247, 244, 236, 0.98);
  --dots-color: rgba(9, 55, 66, 0.09);
  --glow-opacity: 0.10;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--nav-h) + 16px);
}

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--ink);
  line-height: 1.65;
  font-size: 16.5px;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  transition: background var(--t-slow) ease, color var(--t-slow) ease;
}

::selection { background: var(--tint-35); }

img, svg { max-width: 100%; }

h1, h2, h3 {
  font-family: var(--font-display);
  line-height: 1.15;
  letter-spacing: -0.01em;
}

h2 { font-size: clamp(1.7rem, 3.4vw, 2.5rem); }
h3 { font-size: 1.12rem; }

a { color: var(--turquoise); text-decoration: none; }
a:hover { color: var(--cyan); }

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

.container {
  width: min(1120px, 92%);
  margin: 0 auto;
}

/* ── Fondo decorativo ─────────────────────────────────── */
.bg-decor {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
}

.glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
  opacity: var(--glow-opacity);
}

/* Los glows conservan los tonos vivos en ambos temas */
.glow-turquoise {
  width: 620px; height: 620px;
  background: #2fd6c3;
  top: -220px; left: -160px;
}

.glow-coral {
  width: 520px; height: 520px;
  background: #ff8f6b;
  bottom: -200px; right: -140px;
  opacity: calc(var(--glow-opacity) * 0.65);
}

.dots {
  position: absolute;
  inset: 0;
  background-image: radial-gradient(var(--dots-color) 1px, transparent 1px);
  background-size: 34px 34px;
  mask-image: linear-gradient(180deg, rgba(0,0,0,.9), rgba(0,0,0,.25) 55%, transparent);
}

/* ── Navegación ───────────────────────────────────────── */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 50;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  background: var(--nav-bg);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--t-slow) ease, background var(--t-slow) ease;
}

.nav.scrolled {
  border-bottom-color: var(--line);
  background: var(--nav-bg-scrolled);
}

.nav-inner {
  width: min(1120px, 92%);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
}

.brand:hover { color: var(--ink); }

.brand-glyph { width: 34px; height: 34px; flex: none; }

.brand-name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.3rem;
  letter-spacing: 0.02em;
  background: var(--grad-sea);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

.nav-links {
  display: flex;
  gap: 26px;
}

.nav-links a {
  color: var(--muted);
  font-size: 0.94rem;
  font-weight: 500;
  transition: color var(--t-fast) ease;
}

.nav-links a:hover,
.nav-links a.active { color: var(--ink); }

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.lang-toggle,
.theme-toggle {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--turquoise);
  background: transparent;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  padding: 7px 14px;
  cursor: pointer;
  transition: all var(--t-fast) ease;
}

.theme-toggle { padding: 7px 11px; font-size: 0.9rem; line-height: 1; }

.lang-toggle:hover,
.theme-toggle:hover {
  border-color: var(--turquoise);
  background: var(--tint-8);
}

/* ── Botones ──────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.98rem;
  padding: 13px 26px;
  border-radius: 999px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform var(--t-fast) ease, box-shadow var(--t-fast) ease, background var(--t-fast) ease, border-color var(--t-fast) ease;
}

/* El botón primario es una constante de marca: idéntico en ambos temas */
.btn-primary {
  background: linear-gradient(92deg, #2fd6c3, #4cc9f0);
  color: #05242a;
}

.btn-primary:hover {
  color: #05242a;
  transform: translateY(-2px);
  box-shadow: 0 10px 28px var(--tint-32);
}

.btn-ghost {
  color: var(--ink);
  border-color: var(--line-strong);
  background: var(--raise);
}

.btn-ghost:hover {
  color: var(--ink);
  border-color: var(--turquoise);
  background: var(--tint-8);
}

.btn:active { transform: translateY(0); box-shadow: none; }

.btn[disabled] {
  opacity: 0.55;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

.btn-small { padding: 9px 18px; font-size: 0.88rem; }
.btn-block { width: 100%; }

/* ── Hamburguesa ──────────────────────────────────────── */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px; height: 40px;
  background: transparent;
  border: 1px solid var(--line-strong);
  border-radius: 10px;
  cursor: pointer;
  padding: 8px;
}

.hamburger span {
  display: block;
  height: 2px;
  background: var(--ink);
  border-radius: 2px;
  transition: transform var(--t-base) ease, opacity var(--t-base) ease;
}

.hamburger[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.hamburger[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ── Hero ─────────────────────────────────────────────── */
.hero {
  padding: calc(var(--nav-h) + 72px) 0 40px;
  min-height: 92vh;
  display: flex;
  align-items: center;
}

/* En pantallas muy altas el hero no necesita estirarse */
@media (min-height: 1600px) {
  .hero { min-height: unset; padding-bottom: 96px; }
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 56px;
  align-items: center;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--turquoise);
  border: 1px solid var(--line-strong);
  background: var(--tint-6);
  border-radius: 999px;
  padding: 8px 16px;
  margin-bottom: 26px;
}

.badge-dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--turquoise);
  box-shadow: 0 0 10px var(--turquoise);
  animation: pulse 2.4s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.35; }
}

.hero-title {
  font-size: clamp(2.5rem, 5.6vw, 4.1rem);
  font-weight: 700;
  margin-bottom: 22px;
}

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

.hero-sub {
  color: var(--muted);
  font-size: 1.08rem;
  max-width: 54ch;
  margin-bottom: 34px;
}

.hero-ctas {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 44px;
}

.hero-strip {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.strip-label {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--muted);
}

/* ── Chips (componente unificado con el CV) ───────────── */
.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
}

.chip {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--ink);
  border: 1px solid var(--line);
  background: var(--chip-bg);
  border-radius: 8px;
  padding: 5px 10px;
}

.chip-accent {
  color: var(--turquoise);
  background: var(--tint-6);
  border-color: var(--tint-22);
}

/* ── Hero visual ──────────────────────────────────────── */
.hero-visual {
  position: relative;
}

.island-card {
  background: linear-gradient(165deg, var(--panel), var(--bg-2));
  border: 1px solid var(--line-strong);
  border-radius: 20px;
  box-shadow: var(--shadow);
  overflow: hidden;
}

.island-card-head {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 13px 16px;
  border-bottom: 1px solid var(--line);
}

.win-dot {
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--line-strong);
}

.win-dot:first-child { background: rgba(255, 143, 107, 0.65); }
.win-dot:nth-child(2) { background: rgba(244, 213, 141, 0.6); }
.win-dot:nth-child(3) { background: rgba(47, 214, 195, 0.6); }

.island-card-title {
  margin-left: 8px;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--muted);
}

.island-svg { display: block; width: 100%; height: auto; }

.flow-line {
  stroke-dashoffset: 0;
  animation: flow 3.2s linear infinite;
}

.flow-line-2 { animation-duration: 4.1s; animation-direction: reverse; }

@keyframes flow {
  to { stroke-dashoffset: -100; }
}

.float-chip {
  position: absolute;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--ink);
  background: var(--float-bg);
  border: 1px solid var(--line-strong);
  border-radius: 12px;
  padding: 9px 14px;
  box-shadow: var(--float-shadow);
  animation: floaty 5.5s ease-in-out infinite;
}

.chip-a { top: -18px; right: 24px; animation-delay: 0s; }
.chip-b { bottom: 88px; left: -26px; animation-delay: 1.2s; }
.chip-c { bottom: -16px; right: 52px; animation-delay: 2.3s; }

@keyframes floaty {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-9px); }
}

/* ── Secciones ────────────────────────────────────────── */
.section { padding: 96px 0; }

.section-alt {
  background: linear-gradient(180deg, transparent, var(--alt-band) 18%, var(--alt-band) 82%, transparent);
}

.section-head { max-width: 680px; margin-bottom: 52px; }

.kicker {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--coral);
  margin-bottom: 12px;
}

.kicker::before {
  content: "~ ";
  color: var(--turquoise);
}

.section-sub {
  color: var(--muted);
  margin-top: 14px;
  font-size: 1.02rem;
}

.wave-divider { opacity: 0.6; }
.wave-divider svg { display: block; width: 100%; height: 42px; }

/* ── La marca ─────────────────────────────────────────── */
.brand-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}

.brand-story p {
  color: var(--muted);
  font-size: 1.06rem;
  margin-bottom: 18px;
}

.brand-story p:first-child::first-letter {
  font-family: var(--font-display);
  font-size: 1.6em;
  color: var(--turquoise);
}

.brand-pillars {
  display: grid;
  gap: 16px;
}

.pillar {
  display: grid;
  grid-template-columns: auto 1fr;
  grid-template-rows: auto auto;
  column-gap: 14px;
  padding: 18px 20px;
  background: var(--raise);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: border-color var(--t-base) ease, transform var(--t-base) ease;
}

.pillar:hover {
  border-color: var(--line-strong);
  transform: translateX(4px);
}

.pillar-icon { font-size: 1.4rem; grid-row: 1 / 3; align-self: start; padding-top: 2px; }
.pillar h3 { font-size: 1.02rem; margin-bottom: 4px; }
.pillar p { color: var(--muted); font-size: 0.94rem; }

/* ── Servicios ────────────────────────────────────────── */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 26px 24px;
  background: linear-gradient(170deg, var(--card-grad-top), var(--card-grad-bottom));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform var(--t-base) ease, border-color var(--t-base) ease, box-shadow var(--t-base) ease;
}

.card::before {
  content: "";
  position: absolute;
  top: 0; left: 24px; right: 24px;
  height: 1px;
  background: var(--grad-sea);
  opacity: 0;
  transition: opacity var(--t-base) ease;
}

.card:hover {
  transform: translateY(-5px);
  border-color: var(--line-strong);
  box-shadow: var(--card-shadow);
}

.card:hover::before { opacity: 1; }

.card-icon { font-size: 1.7rem; line-height: 1; }

.card p { color: var(--muted); font-size: 0.95rem; flex: 1; }

.card-chips { margin-top: 4px; }

/* ── Stack ────────────────────────────────────────────── */
.stack-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.stack-group {
  padding: 24px;
  background: var(--stack-bg);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.stack-group-wide { grid-column: span 2; }

.stack-group h3 {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--coral);
  margin-bottom: 16px;
}

.stack-group ul { list-style: none; display: grid; gap: 12px; }

.stack-group li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  column-gap: 10px;
}

.stack-group li strong {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.98rem;
}

.stack-group li span {
  color: var(--muted);
  font-size: 0.86rem;
}

.was {
  flex-basis: 100%;
  font-style: normal;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--sand);
  opacity: 0.75;
  margin-top: 2px;
}

.was::before { content: "↳ "; }

.stack-note {
  margin-top: 34px;
  text-align: center;
  color: var(--muted);
  font-size: 0.95rem;
  font-style: italic;
}

/* ── Método ───────────────────────────────────────────── */
.steps {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  counter-reset: step;
}

.step {
  position: relative;
  padding: 26px 22px;
  background: var(--raise);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: border-color var(--t-base) ease, transform var(--t-base) ease;
}

.step:hover { border-color: var(--line-strong); transform: translateY(-4px); }

.step-num {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--coral);
  border: 1px solid var(--tint-coral-35);
  background: var(--tint-coral-7);
  border-radius: 8px;
  padding: 4px 10px;
  margin-bottom: 16px;
}

.step h3 { margin-bottom: 8px; font-size: 1.05rem; }
.step p { color: var(--muted); font-size: 0.92rem; }

/* ── Fundador ─────────────────────────────────────────── */
.founder-grid {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 56px;
  align-items: center;
}

.avatar {
  position: relative;
  width: 200px;
  margin: 0 auto;
}

.avatar svg { display: block; }

.avatar-badge {
  position: absolute;
  bottom: 6px; right: 6px;
  font-size: 1.5rem;
  background: var(--panel-2);
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  width: 48px; height: 48px;
  display: grid;
  place-items: center;
}

.founder-copy p {
  color: var(--muted);
  font-size: 1.04rem;
  margin-bottom: 16px;
  max-width: 62ch;
}

.founder-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.pill-link {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--ink);
  border: 1px solid var(--line-strong);
  background: var(--raise);
  border-radius: 999px;
  padding: 9px 18px;
  transition: border-color var(--t-fast) ease, background var(--t-fast) ease;
}

.pill-link:hover {
  color: var(--ink);
  border-color: var(--turquoise);
  background: var(--tint-8);
}

/* ── Contacto ─────────────────────────────────────────── */
.contact-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 28px;
  align-items: start;
}

.contact-channels { display: grid; gap: 14px; }

.channel {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px 22px;
  background: var(--raise);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--ink);
  transition: border-color var(--t-base) ease, transform var(--t-base) ease;
}

.channel:hover {
  color: var(--ink);
  border-color: var(--turquoise);
  transform: translateX(5px);
}

.channel-icon { font-size: 1.5rem; }

.channel-body { display: grid; }
.channel-body strong { font-family: var(--font-display); font-size: 1rem; }
.channel-body span { color: var(--muted); font-size: 0.88rem; }

.contact-form {
  display: grid;
  gap: 18px;
  padding: 30px 28px;
  background: linear-gradient(170deg, var(--panel), var(--bg-2));
  border: 1px solid var(--line-strong);
  border-radius: 20px;
  box-shadow: var(--shadow);
}

.form-row { display: grid; gap: 8px; }

.form-row label {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--muted);
}

.form-row input,
.form-row textarea {
  font-family: var(--font-body);
  font-size: 0.98rem;
  color: var(--ink);
  background: var(--input-bg);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 13px 15px;
  transition: border-color var(--t-fast) ease;
  resize: vertical;
}

.form-row input::placeholder,
.form-row textarea::placeholder { color: var(--placeholder-color); }

.form-row input:focus,
.form-row textarea:focus {
  outline: none;
  border-color: var(--turquoise);
  box-shadow: 0 0 0 3px var(--tint-14);
}

/* Estado de error: lo marca el JS con aria-invalid al validar */
.form-row input[aria-invalid="true"],
.form-row textarea[aria-invalid="true"] {
  border-color: var(--coral);
  box-shadow: 0 0 0 3px var(--tint-coral-14);
}

.hp {
  position: absolute !important;
  left: -5000px !important;
  width: 1px; height: 1px;
  opacity: 0;
}

.form-status {
  min-height: 1.2em;
  font-size: 0.9rem;
  color: var(--muted);
  text-align: center;
}

.form-status.ok { color: var(--turquoise); }
.form-status.err { color: var(--coral); }

/* ── Footer ───────────────────────────────────────────── */
.footer {
  border-top: 1px solid var(--line);
  padding: 44px 0 52px;
  background: var(--footer-bg);
}

.footer-inner {
  display: grid;
  gap: 14px;
  justify-items: center;
  text-align: center;
}

.footer-tag { color: var(--muted); font-size: 0.95rem; }

.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 22px;
}

.footer-links a {
  color: var(--muted);
  font-size: 0.88rem;
}

.footer-links a:hover { color: var(--ink); }

.footer-copy {
  color: var(--muted);
  font-size: 0.84rem;
  margin-top: 8px;
}

/* ── Animaciones de aparición ─────────────────────────── */
/* Solo se ocultan los elementos si hay JavaScript (html.js) */
html.js .reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity var(--t-reveal) ease, transform var(--t-reveal) ease;
}

html.js .reveal.visible {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .float-chip, .badge-dot, .flow-line { animation: none; }
  * { transition-duration: 0.01ms !important; }
}

/* ── Responsive ───────────────────────────────────────── */
@media (max-width: 1000px) {
  .hero-grid { grid-template-columns: 1fr; gap: 64px; }
  .hero { min-height: unset; padding-bottom: 72px; }
  .hero-visual { max-width: 540px; margin: 0 auto; }
  .cards-grid, .stack-grid { grid-template-columns: repeat(2, 1fr); }
  .stack-group-wide { grid-column: span 2; }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .brand-grid { grid-template-columns: 1fr; gap: 34px; }
  .founder-grid { grid-template-columns: 1fr; gap: 36px; text-align: left; }
  .avatar { width: 170px; }
}

@media (max-width: 720px) {
  .nav-links {
    position: fixed;
    top: var(--nav-h);
    left: 0; right: 0;
    flex-direction: column;
    gap: 4px;
    padding: 14px 5%;
    background: var(--nav-bg-mobile);
    border-bottom: 1px solid var(--line-strong);
    transform: translateY(-130%);
    transition: transform var(--t-slow) ease;
  }

  .nav-links.open { transform: translateY(0); }

  .nav-links a {
    padding: 12px 8px;
    font-size: 1.05rem;
    border-radius: 10px;
  }

  .nav-links a:hover { background: var(--raise-strong); }

  .hamburger { display: flex; }
  .nav .btn { display: none; }

  .cards-grid, .stack-grid, .steps { grid-template-columns: 1fr; }
  .stack-group-wide { grid-column: auto; }
  .contact-grid { grid-template-columns: 1fr; }
  .section { padding: 72px 0; }

  /* Las etiquetas siguen flotando sobre la isla como en escritorio,
     con tamaño y offsets ajustados para pantallas estrechas */
  .float-chip {
    font-size: 0.78rem;
    padding: 8px 12px;
  }

  .chip-a { top: -14px; right: 10px; }
  .chip-b { bottom: 74px; left: -6px; }
  .chip-c { bottom: -14px; right: 14px; }
}