/* =========================================================
   Vórtice Digital · Estilos base
   Paleta tomada del logo: azul noche, cian y violeta neón
   ========================================================= */

:root {
  --noche: #0B1020;
  --noche-2: #131B36;
  --noche-3: #1C2750;
  --cian: #22D3EE;
  --cian-osc: #0E7490;
  --violeta: #8B5CF6;
  --violeta-osc: #6D28D9;
  --tinta: #0F172A;
  --gris: #475569;
  --gris-2: #1E293B;
  --plata: #A9B3C7;
  --hielo: #F3F6FC;
  --borde: #DCE3F2;
  --blanco: #FFFFFF;

  --grad-brand: linear-gradient(120deg, #0891B2 0%, #4F46E5 55%, #7C3AED 100%);
  --grad-neon: linear-gradient(90deg, var(--cian), var(--violeta));
  --grad-dark: linear-gradient(160deg, var(--noche-3) 0%, var(--noche) 100%);

  --radius-sm: 10px;
  --radius: 16px;
  --radius-lg: 24px;
  --shadow-sm: 0 2px 10px rgba(11, 16, 32, .06);
  --shadow: 0 14px 40px -12px rgba(11, 16, 32, .25);

  --font: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-display: "Exo 2", "Inter", system-ui, sans-serif;
  --gutter: 20px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.65;
  color: var(--gris);
  background: var(--blanco);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img, svg { display: block; max-width: 100%; }
a { color: var(--violeta-osc); }
h1, h2, h3, h4 { font-family: var(--font-display); color: var(--tinta); line-height: 1.15; margin: 0 0 .5em; letter-spacing: -.01em; }
h1 { font-size: clamp(2.1rem, 8vw, 3.5rem); font-weight: 800; }
h2 { font-size: clamp(1.6rem, 5.4vw, 2.4rem); font-weight: 700; }
h3 { font-size: 1.15rem; font-weight: 700; }
p { margin: 0 0 1em; }
strong, b { color: var(--gris-2); font-weight: 700; }

.container { width: 100%; max-width: 1180px; margin: 0 auto; padding: 0 var(--gutter); }
:focus-visible { outline: 3px solid var(--cian); outline-offset: 3px; border-radius: 6px; }

.eyebrow {
  display: inline-block;
  font-size: .74rem; font-weight: 700; letter-spacing: .16em; text-transform: uppercase;
  color: var(--violeta-osc);
  margin-bottom: .9rem;
}
.eyebrow.on-dark { color: var(--cian); }

/* ---------- Botones ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .55rem;
  font: 700 .95rem/1.2 var(--font);
  padding: .85rem 1.4rem;
  border-radius: 999px;
  border: 2px solid transparent;
  text-decoration: none;
  cursor: pointer;
  transition: transform .2s ease, box-shadow .2s ease, background .2s ease, color .2s ease, border-color .2s ease;
  -webkit-tap-highlight-color: transparent;
}
.btn:active { transform: scale(.98); }
.btn-primary { background: var(--grad-brand); color: #fff; box-shadow: 0 10px 24px -8px rgba(79, 70, 229, .55); }
.btn-primary:hover { box-shadow: 0 14px 30px -8px rgba(79, 70, 229, .7); transform: translateY(-2px); }
.btn-ghost { color: var(--tinta); border-color: rgba(15, 23, 42, .18); background: rgba(255,255,255,.7); }
.btn-ghost:hover { border-color: var(--tinta); }
.btn-outline { color: var(--violeta-osc); border-color: var(--violeta-osc); background: transparent; }
.btn-outline:hover { background: var(--violeta-osc); color: #fff; }
.btn-neon { color: #fff; border-color: rgba(34, 211, 238, .55); background: rgba(34, 211, 238, .06); }
.btn-neon:hover { border-color: var(--cian); background: rgba(34, 211, 238, .14); }
.btn-lg { padding: 1.05rem 1.6rem; font-size: 1rem; }

/* ---------- Formularios ---------- */
.field { display: flex; flex-direction: column; gap: .35rem; margin-bottom: 1.1rem; }
.field label { font-size: .82rem; font-weight: 700; color: var(--tinta); }
.field input, .field select, .field textarea {
  font: 500 1rem/1.4 var(--font);
  color: var(--gris-2);
  padding: .8rem 1rem;
  border: 1.5px solid var(--borde);
  border-radius: 12px;
  background: #fff;
  width: 100%;
  transition: border-color .2s ease, box-shadow .2s ease;
}
.field textarea { resize: vertical; min-height: 70px; }
.field input:focus, .field select:focus, .field textarea:focus { outline: none; border-color: var(--violeta); box-shadow: 0 0 0 4px rgba(139, 92, 246, .16); }
.field.invalid input, .field.invalid textarea { border-color: #c0392b; background: #fff7f7; }
.check { display: flex; gap: .65rem; align-items: flex-start; font-size: .88rem; font-weight: 600; color: var(--tinta); margin: .3rem 0 1.2rem; cursor: pointer; }
.check input { width: 20px; height: 20px; accent-color: var(--violeta-osc); flex: none; margin: .1rem 0 0; }