/* Paleta dark */
:root {
  --color-primary: #FF6B35;
  --color-secondary: #4A90E2;
  --color-accent: #C44569;
  --color-bg: #1A1A1A;
  --color-surface: #2D2D2D;
  --color-text: #FFFFFF;
  --color-text-secondary: #E0E0E0;
  --color-success: #00D4AA;
  --color-error: #FF6B6B;
  --color-warning: #FFD93D;
  --color-border: #404040;
  --color-white: #FFFFFF;

  --radius: 14px;
  --radius-sm: 10px;
  --radius-lg: 20px;
  --shadow-lg: 0 30px 80px rgba(0, 0, 0, 0.45);
  --shadow-md: 0 12px 30px rgba(0, 0, 0, 0.35);
  --shadow-sm: 0 6px 14px rgba(0, 0, 0, 0.3);
  --header-height: 56px;

  /* Superficies elevadas y controles (adaptativas al tema) */
  --surface-1: color-mix(in oklab, var(--color-surface) 85%, white);
  --surface-2: color-mix(in oklab, var(--color-surface) 75%, white);
  --border-strong: color-mix(in oklab, var(--color-border) 80%, white);
  --input-bg: #222222;
}

[data-theme="light"] {
  --color-bg: #ffffff;
  --color-surface: #f6f7f9;
  --color-text: #0f172a;
  --color-text-secondary: #384152;
  --color-border: #dce1e7;

  --surface-1: #ffffff;
  --surface-2: #f6f7f9;
  --border-strong: #d7dde5;
  --input-bg: #ffffff;
}

/* Reset mínimo */
* { box-sizing: border-box; }
html, body { height: 100%; }
body { margin: 0; padding-top: calc(var(--header-height) + env(safe-area-inset-top)); background: var(--color-bg); color: var(--color-text); font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell, 'Helvetica Neue', Arial, 'Noto Sans', 'Apple Color Emoji', 'Segoe UI Emoji', 'Segoe UI Symbol', sans-serif; line-height: 1.6; }

/* Tipografía y espaciado minimal */
h1, h2, h3 { font-weight: 700; letter-spacing: -0.02em; }
p { color: var(--color-text-secondary); }
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin: 14px 0 6px; }
.chip { border: 1px solid var(--border-strong); background: var(--surface-2); color: var(--color-text-secondary); padding: 6px 10px; border-radius: 999px; font-size: 12px; }
.kpis { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin: 10px 0 6px; }
.kpi { background: var(--surface-1); border: 1px solid var(--border-strong); border-radius: 14px; padding: 14px; text-align: center; box-shadow: var(--shadow-sm); }
.kpi-value { font-size: 22px; font-weight: 700; color: var(--color-primary); }
.kpi-label { font-size: 12px; color: var(--color-text-secondary); }

.container { width: min(1100px, calc(100% - 32px)); margin-inline: auto; }

/* Header */
.site-header { position: fixed; top: 0; left: 0; right: 0; background: color-mix(in oklab, var(--color-bg) 80%, transparent); backdrop-filter: blur(8px); border-bottom: 1px solid color-mix(in oklab, var(--color-border) 60%, transparent); z-index: 100; height: var(--header-height); }
.header-inner { display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 8px; padding: 0; height: 100%; }
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--color-text); text-decoration: none; }
.brand-mark { font-size: 18px; }
.brand-name { font-weight: 700; letter-spacing: 0.4px; }
.header-actions { display: inline-flex; align-items: center; gap: 10px; }
.menu-toggle { justify-self: end; display: inline-flex; align-items: center; gap: 8px; height: 38px; padding: 0 12px; border-radius: 10px; border: 1px solid var(--border-strong); background: var(--surface-2); color: var(--color-text); cursor: pointer; }
.menu-icon { width: 18px; height: 2px; background: var(--color-text); position: relative; display: inline-block; }
.menu-icon::before, .menu-icon::after { content: ""; position: absolute; left: 0; width: 18px; height: 2px; background: var(--color-text); transition: transform .2s ease; }
.menu-icon::before { top: -6px; }
.menu-icon::after { top: 6px; }

.nav { position: absolute; inset: 58px 0 auto 0; margin: 0; padding: 12px 16px calc(env(safe-area-inset-bottom) + 12px); display: grid; gap: 12px; background: var(--surface-1); border-bottom: 1px solid var(--border-strong); transform-origin: top; transform: scaleY(0.96); opacity: 0; pointer-events: none; transition: opacity .18s ease, transform .18s ease; }
.nav a { color: var(--color-text); text-decoration: none; font-weight: 700; padding: 12px 10px; border-radius: 10px; font-size: 16px; }
.nav a:active { background: color-mix(in oklab, var(--color-text) 8%, transparent); }
.nav a:hover { color: var(--color-text); }
.site-header.open .nav { opacity: 1; transform: scaleY(1); pointer-events: auto; }
.site-header.open .menu-icon { background: transparent; }
.site-header.open .menu-icon::before { transform: translateY(6px) rotate(45deg); }
.site-header.open .menu-icon::after { transform: translateY(-6px) rotate(-45deg); }

@media (min-width: 960px) {
  .header-inner { grid-template-columns: auto 1fr auto; }
  .menu-toggle { display: none; }
  .nav { position: static; display: flex; gap: 18px; background: transparent; border: none; padding: 0; opacity: 1; pointer-events: auto; transform: none; justify-self: center; align-items: center; }
}

/* Hero */
.hero { padding: 72px 0 28px; position: relative; overflow: hidden; isolation: isolate; }
.hero-inner { display: grid; grid-template-columns: 1fr; gap: 24px; align-items: center; }
.hero h1 {
  margin: 0 0 10px;
  font-size: clamp(32px, 4.2vw, 54px);
  line-height: 1.1;
}
.lead { color: var(--color-text-secondary); font-size: 18px; }
.hero-cta { margin-top: 24px; display: flex; gap: 12px; flex-wrap: wrap; }
.hero-art { display: grid; place-items: center; position: relative; }
.glow { position: absolute; width: 560px; height: 560px; background: radial-gradient(60% 60% at 50% 50%, color-mix(in oklab, var(--color-primary) 28%, transparent) 0%, transparent 70%); filter: blur(24px); opacity: .7; pointer-events: none; transform: translate(10%, -6%); }
.blob { position: absolute; width: 420px; height: 420px; background: conic-gradient(from 180deg at 50% 50%, color-mix(in oklab, var(--color-secondary) 60%, transparent), color-mix(in oklab, var(--color-primary) 60%, transparent), transparent 70%); filter: blur(30px); opacity: .35; border-radius: 50%; animation: blobFloat 14s ease-in-out infinite alternate; }
.hero::before { content: ""; position: absolute; inset: -20% -10% auto -10%; height: 80%; background: radial-gradient(1200px 400px at 0% 0%, color-mix(in oklab, var(--color-secondary) 10%, transparent), transparent); pointer-events: none; z-index: -1; }
.phone-mock { position: relative; width: 280px; height: 540px; border-radius: 36px; background: linear-gradient(180deg, #0e0e0e, #1d1d1d); border: 1px solid var(--color-border); box-shadow: var(--shadow-lg); overflow: hidden; transform-style: preserve-3d; will-change: transform; }
.status-bar { height: 22px; background: #0b0b0b; opacity: .8; }
.app-card { position: relative; padding: 16px; }
.badge-success { position: absolute; top: 12px; right: 12px; background: color-mix(in oklab, var(--color-success) 12%, transparent); color: var(--color-text); border: 1px solid color-mix(in oklab, var(--color-success) 50%, var(--color-border)); border-radius: 999px; font-size: 12px; padding: 6px 10px; }
.art-total { margin: 48px 0 12px; font-weight: 700; color: var(--color-white); }
.art-line { height: 12px; background: color-mix(in oklab, var(--color-text) 18%, transparent); border-radius: 8px; margin: 10px 0; }
.art-line.short { width: 70%; }

@keyframes blobFloat {
  0% { transform: translate(-10%, -4%) scale(1); }
  100% { transform: translate(14%, 6%) scale(1.1); }
}

/* Secciones */
.section { padding: 68px 0; }
.section-alt { background: var(--color-bg); }
.section h2 { margin: 0 0 10px; font-size: clamp(26px, 3.2vw, 38px); letter-spacing: -0.01em; }
.section-lead { color: var(--color-text-secondary); margin-bottom: 28px; }

.grid { display: grid; gap: 14px; }
.features { grid-template-columns: 1fr; }
.benefits { grid-template-columns: 1fr; }
.how { grid-template-columns: 1fr; }

@media (min-width: 720px) {
  .features { grid-template-columns: repeat(3, 1fr); }
  .benefits { grid-template-columns: 1fr 1fr; }
  .how { grid-template-columns: 1fr 1fr; }
}

.card { background: var(--surface-1); border: 1px solid var(--border-strong); border-radius: var(--radius); padding: 18px 18px 20px; box-shadow: var(--shadow-sm); }
.card.highlight { outline: none; box-shadow: var(--shadow-md); border-color: color-mix(in oklab, var(--color-primary) 35%, var(--border-strong)); }
.icon { font-size: 24px; margin-bottom: 10px; }
.list { margin: 8px 0 0; padding-left: 18px; color: var(--color-text-secondary); }
.list.compact { margin-top: 6px; }
.hint { color: var(--color-text-secondary); font-size: 12px; margin-top: 10px; }
.steps { margin: 8px 0 0; padding-left: 20px; color: var(--color-text-secondary); }

/* Accordion */
.accordion { display: grid; gap: 10px; }
.accordion-item { border: 1px solid var(--border-strong); border-radius: 14px; background: var(--surface-1); overflow: hidden; }
.accordion-item h3 { margin: 0; }
.accordion-trigger { width: 100%; text-align: left; padding: 14px 16px; background: transparent; color: var(--color-text); border: 0; display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 12px; font: inherit; font-size: 1rem; line-height: 1.4; font-weight: 700; cursor: pointer; }
.accordion-trigger:focus-visible { outline: 2px solid color-mix(in oklab, var(--color-secondary) 55%, var(--color-border)); outline-offset: 3px; border-radius: 10px; }
.accordion-icon { width: 20px; height: 20px; border: 1px solid var(--border-strong); border-radius: 6px; position: relative; background: var(--surface-2); }
.accordion-icon::before, .accordion-icon::after { content: ""; position: absolute; background: var(--color-white); border-radius: 2px; top: 50%; left: 50%; transform: translate(-50%, -50%); }
.accordion-icon::before { width: 12px; height: 2px; }
.accordion-icon::after { width: 2px; height: 12px; transition: transform .18s ease, opacity .18s ease; }
.accordion-trigger[aria-expanded="true"] .accordion-icon::after { transform: scaleY(0); opacity: 0; }
.accordion-panel { padding: 0 16px 16px; color: var(--color-text-secondary); }

/* Contacto */
.contact { display: grid; gap: 18px; grid-template-columns: 1fr; align-items: start; }
.form { display: grid; gap: 14px; }
.form-row { display: grid; gap: 12px; grid-template-columns: 1fr; }
.form-field { display: grid; gap: 8px; }
.form-field.full { grid-column: 1 / -1; }
label { font-weight: 600; }
input, textarea {
  background: var(--input-bg);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  color: var(--color-text);
  padding: 12px 14px;
  outline: none;
}
input:focus, textarea:focus { border-color: color-mix(in oklab, var(--color-secondary) 55%, var(--color-border)); box-shadow: 0 0 0 4px color-mix(in oklab, var(--color-secondary) 18%, transparent); }
.error { color: var(--color-error); font-size: 12px; min-height: 16px; }
.form-status { margin: 4px 0 0; min-height: 22px; color: var(--color-text-secondary); }

/* Botones */
.btn { appearance: none; border: 1px solid var(--color-border); cursor: pointer; text-decoration: none; display: inline-flex; align-items: center; justify-content: center; gap: 8px; height: 44px; padding: 0 16px; border-radius: 12px; font-weight: 700; letter-spacing: 0.2px; background: transparent; }
.btn:focus-visible { outline: 2px solid color-mix(in oklab, var(--color-secondary) 60%, var(--color-border)); outline-offset: 2px; }
.btn-small { height: 36px; padding: 0 12px; border-radius: 10px; font-weight: 600; }
.btn-primary { border-color: color-mix(in oklab, var(--color-primary) 55%, var(--color-border)); color: var(--color-white); }
.btn-primary:hover { background: color-mix(in oklab, var(--color-primary) 16%, transparent); }
.btn-secondary { border-color: color-mix(in oklab, var(--color-secondary) 55%, var(--color-border)); color: var(--color-text); background: color-mix(in oklab, var(--color-secondary) 6%, transparent); }
.btn-secondary:hover { background: color-mix(in oklab, var(--color-secondary) 16%, transparent); }
.btn-ghost { background: transparent; color: var(--color-text); border: 1px solid var(--color-border); }
.btn-ghost:hover { border-color: color-mix(in oklab, var(--color-text) 60%, var(--color-border)); }

/* CTA del header: siempre con fondo sólido para contraste en light/dark */
.site-header .btn-primary {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #ffffff;
}
.site-header .btn-primary:hover { filter: brightness(1.06); }

/* Footer */
.site-footer { border-top: 1px solid var(--border-strong); padding: 32px 0; background: var(--surface-2); }
.footer-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; align-items: start; }
.footer-brand { font-weight: 700; }
.footer-col-title { font-weight: 700; margin-bottom: 8px; }
.footer-links { display: flex; flex-direction: column; gap: 8px; }
.footer-links a { color: var(--color-text-secondary); text-decoration: none; }
.footer-links a:hover { color: var(--color-white); }
.footer-legal { padding-top: 12px; color: var(--color-text-secondary); text-align: center; border-top: 1px dashed var(--color-border); margin-top: 18px; }

/* Escalado hacia desktop */
@media (min-width: 960px) {
  .hero-inner { grid-template-columns: 1.1fr .9fr; gap: 40px; }
  .contact { grid-template-columns: 1fr; gap: 20px; }
  .form-row { grid-template-columns: 1fr 1fr; gap: 14px; }
  .footer-grid { grid-template-columns: repeat(4, 1fr); }
}

@media (max-width: 640px) {
  .footer-inner { grid-template-columns: 1fr; gap: 8px; text-align: center; }
  .footer-copy { text-align: center; }
  .header-cta { display: none; }
  .hero-inner { grid-template-columns: 1fr; gap: 16px; }
  .hero h1 { font-size: clamp(28px, 8vw, 36px); }
  .lead { font-size: 16px; }
  .kpis-hero { grid-template-columns: repeat(3, 1fr); gap: 8px; }
  .phone-mock { width: 240px; height: 480px; border-radius: 28px; }
  .glow { width: 360px; height: 360px; }
  .blob { width: 320px; height: 320px; }
}

/* Microinteracciones */
.reveal { opacity: 0; transform: translateY(8px); transition: opacity .5s ease, transform .5s ease; }
.reveal.in { opacity: 1; transform: translateY(0); }

/* Utilidades de accesibilidad */
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }