/* ViRuNODE — hoja de estilos de la landing
   Paleta: gris carbón del logo + un único acento verde azulado. */

:root {
  --ink: #2b2b2b;          /* carbón del logo: texto y bloques oscuros */
  --ink-soft: #555b5e;     /* texto secundario (7:1 sobre blanco) */
  --paper: #ffffff;
  --paper-alt: #f4f5f4;    /* fondo de secciones alternas */
  --line: #d9dcdb;
  --accent: #1f6f68;       /* acento: botones y enlaces (5,9:1 sobre blanco) */
  --accent-dark: #17544f;
  --accent-light: #8fd6cd; /* acento sobre fondo oscuro */
  --error: #b3261e;
  --radius: 10px;
  --max: 1120px;
  --font: "Segoe UI", system-ui, -apple-system, Roboto, "Helvetica Neue", Arial, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: 5.5rem; }

body {
  margin: 0;
  font-family: var(--font);
  font-size: 1.0625rem;
  line-height: 1.6;
  color: var(--ink);
  background: var(--paper);
  -webkit-text-size-adjust: 100%;
}

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

h1, h2, h3 { line-height: 1.2; margin: 0 0 0.6em; text-wrap: balance; }
h1 { font-size: clamp(2rem, 5vw, 3rem); letter-spacing: -0.01em; }
h2 { font-size: clamp(1.6rem, 3.5vw, 2.2rem); }
h3 { font-size: 1.2rem; }
p { margin: 0 0 1em; }

a { color: var(--accent); text-underline-offset: 0.15em; }
a:hover { color: var(--accent-dark); }

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

.container { width: 100%; max-width: var(--max); margin: 0 auto; padding: 0 1.25rem; }
.narrow { max-width: 760px; }
.center { text-align: center; }

.sr-only {
  position: absolute; width: 1px; height: 1px; overflow: hidden;
  clip-path: inset(50%); white-space: nowrap;
}

.skip-link {
  position: absolute; left: 1rem; top: -4rem; z-index: 100;
  background: var(--ink); color: #fff; padding: 0.6rem 1rem; border-radius: 6px;
}
.skip-link:focus { top: 1rem; color: #fff; }

/* Botones */
.btn {
  display: inline-block;
  padding: 0.85rem 1.5rem;
  min-height: 44px;
  border: 2px solid transparent;
  border-radius: 999px;
  font: inherit;
  font-weight: 600;
  text-decoration: none;
  text-align: center;
  cursor: pointer;
  transition: background-color 0.15s ease;
}
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-dark); color: #fff; }
.btn-small { padding: 0.5rem 1rem; font-size: 0.95rem; }
.btn-block { width: 100%; }
.btn[disabled] { opacity: 0.6; cursor: progress; }

/* Cabecera */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255, 255, 255, 0.96);
  border-bottom: 1px solid var(--line);
}
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  gap: 1rem; min-height: 4.5rem;
}
.brand { display: inline-flex; }
.brand img { display: block; height: 40px; width: auto; }
.main-nav { display: none; }
.main-nav ul { display: flex; gap: 1.5rem; list-style: none; margin: 0; padding: 0; }
.main-nav a { color: var(--ink); text-decoration: none; font-weight: 500; padding: 0.5rem 0; }
.main-nav a:hover { color: var(--accent); text-decoration: underline; }

/* Portada */
.hero { padding: 3rem 0 3.5rem; }
.hero-inner { display: grid; gap: 2rem; align-items: center; }
.eyebrow {
  font-size: 0.9rem; font-weight: 600; letter-spacing: 0.06em;
  text-transform: uppercase; color: var(--accent); margin-bottom: 0.8rem;
}
.lead { font-size: 1.2rem; color: var(--ink-soft); max-width: 36em; }
.hero-actions { margin: 1.5rem 0 0.6rem; }
.note { font-size: 0.95rem; color: var(--ink-soft); }

.hero-art svg { display: block; width: 100%; max-width: 480px; margin: 0 auto; }
.art-link { fill: none; stroke: var(--ink); stroke-width: 2.5; }
.art-link-soft { stroke: var(--line); stroke-dasharray: 4 6; }
.art-node { fill: var(--ink); }
.art-node-accent { fill: var(--accent); }
.art-mini { fill: var(--paper); stroke: var(--ink); stroke-width: 2.5; }
.art-dot { fill: var(--accent); stroke: var(--paper); stroke-width: 3; }
.art-label { fill: #fff; font-size: 17px; font-weight: 600; font-family: var(--font); }

/* Secciones */
.section { padding: 4rem 0; }
.section-alt { background: var(--paper-alt); }
.section-intro { color: var(--ink-soft); max-width: 40em; margin-bottom: 2rem; }

.cards { list-style: none; margin: 2rem 0 0; padding: 0; display: grid; gap: 1.25rem; }
.card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.75rem 1.5rem;
}
.card p:last-child { margin-bottom: 0; }
.cards + .center { margin-top: 2.5rem; }

.icon {
  width: 48px; height: 48px; margin-bottom: 1rem;
  fill: none; stroke: var(--accent); stroke-width: 2.5;
  stroke-linecap: round; stroke-linejoin: round;
}
.for-whom, .deadline { font-size: 0.95rem; color: var(--ink-soft); }
.deadline { border-left: 3px solid var(--accent); padding-left: 0.9rem; }
.deadline strong { color: var(--ink); }

/* Pasos */
.steps { list-style: none; counter-reset: paso; margin: 2rem 0 0; padding: 0; display: grid; gap: 2rem; }
.steps li { counter-increment: paso; position: relative; padding-left: 4.25rem; }
.steps li::before {
  content: counter(paso);
  position: absolute; left: 0; top: 0;
  width: 3rem; height: 3rem; border-radius: 50%;
  background: var(--ink); color: #fff;
  display: grid; place-items: center;
  font-weight: 700; font-size: 1.2rem;
}
.steps h3 { margin-bottom: 0.3em; }
.steps p { margin: 0; color: var(--ink-soft); }

/* Caso real */
.case { display: grid; gap: 2rem; align-items: center; }
.case-art {
  background: var(--paper); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 2rem 1.5rem; text-align: center;
}
.logo-slot { font-size: 1.6rem; font-weight: 700; margin: 0 0 1.5rem; }
.logo-slot-small { font-size: 1.3rem; margin: 0; }
.case-flow {
  display: flex; align-items: center; justify-content: center; gap: 0.75rem;
  font-weight: 600; color: var(--ink-soft);
}
.case-flow svg {
  width: 64px; height: 24px; fill: none; stroke: var(--accent);
  stroke-width: 2; stroke-linecap: round; stroke-linejoin: round;
}

/* Por qué ViRuNODE */
.why { display: grid; gap: 2rem; align-items: start; }
.credentials {
  border: 1px solid var(--line); border-radius: var(--radius);
  padding: 1.75rem 1.5rem; text-align: center;
}
.credentials-title {
  font-size: 0.9rem; font-weight: 600; letter-spacing: 0.06em;
  text-transform: uppercase; color: var(--ink-soft); margin-bottom: 0.5rem;
}
/* Área de protección del logo de Odoo: espacio libre alrededor, sin efectos */
.logo-clear { padding: 1.5rem; margin-bottom: 1rem; }
.logo-clear img { display: block; margin: 0 auto; width: 178px; }

/* Preguntas frecuentes */
details { border-bottom: 1px solid var(--line); }
details:first-of-type { border-top: 1px solid var(--line); margin-top: 1.5rem; }
summary {
  cursor: pointer; padding: 1.1rem 2rem 1.1rem 0; font-weight: 600;
  list-style: none; position: relative;
}
summary::-webkit-details-marker { display: none; }
summary::after {
  content: "+"; position: absolute; right: 0.25rem; top: 0.9rem;
  font-size: 1.5rem; line-height: 1; color: var(--accent);
}
details[open] summary::after { content: "–"; }
details p { color: var(--ink-soft); padding-right: 2rem; }

/* Reserva */
.section-dark {
  background-color: var(--ink);
  background-image: radial-gradient(rgba(255, 255, 255, 0.07) 1.5px, transparent 1.5px);
  background-size: 28px 28px;
  color: #fff;
}
.booking { display: grid; gap: 2rem; align-items: start; }
.booking-text p { color: #e3e5e4; font-size: 1.15rem; }
.ticks { list-style: none; margin: 1.5rem 0 0; padding: 0; }
.ticks li { padding-left: 1.75rem; position: relative; margin-bottom: 0.5rem; }
.ticks li::before {
  content: ""; position: absolute; left: 0; top: 0.45em;
  width: 0.9rem; height: 0.5rem;
  border-left: 3px solid var(--accent-light); border-bottom: 3px solid var(--accent-light);
  transform: rotate(-45deg);
}

.form {
  background: var(--paper); color: var(--ink);
  border-radius: var(--radius); padding: 1.75rem 1.5rem;
}
.form-hint { font-size: 0.9rem; color: var(--ink-soft); }
.field { margin-bottom: 1.1rem; }
.field label { display: block; font-weight: 600; margin-bottom: 0.3rem; }
.optional { font-weight: 400; color: var(--ink-soft); }
.field input[type="text"], .field input[type="email"], .field input[type="tel"],
.field select, .field textarea {
  width: 100%; min-height: 46px;
  padding: 0.65rem 0.8rem;
  font: inherit; color: var(--ink); background: #fff;
  border: 1.5px solid #767b7d; border-radius: 6px;
}
.field textarea { resize: vertical; }
.field [aria-invalid="true"] { border-color: var(--error); border-width: 2px; }
.field-check { display: grid; grid-template-columns: auto 1fr; gap: 0.2rem 0.7rem; align-items: start; }
.field-check input { width: 1.4rem; height: 1.4rem; margin: 0.15rem 0 0; accent-color: var(--accent); }
.field-check label { font-weight: 400; margin: 0; }
.field-check .error { grid-column: 1 / -1; }
.error { color: var(--error); font-size: 0.95rem; font-weight: 600; margin: 0.3rem 0 0; }
.error::before { content: "⚠ "; }
.trap { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.form-status { margin: 1rem 0 0; font-weight: 600; }
.form-status:empty { display: none; }
.form-status.is-ok { color: var(--accent-dark); }
.form-status.is-error { color: var(--error); }
.legal-note { font-size: 0.82rem; color: var(--ink-soft); margin: 1rem 0 0; }

/* Pie */
.site-footer { background: #1f1f1f; color: #d6d8d7; padding: 2.5rem 0; font-size: 0.95rem; }
.footer-brand { font-size: 1.3rem; font-weight: 700; color: #fff; margin-bottom: 1rem; }
.footer-links { list-style: none; display: flex; flex-wrap: wrap; gap: 0.5rem 1.5rem; margin: 0 0 1.5rem; padding: 0; }
.site-footer a { color: #fff; display: inline-block; padding: 0.4rem 0; }
.site-footer a:hover { color: var(--accent-light); }
.site-footer :focus-visible { outline-color: var(--accent-light); }
.trademarks { font-size: 0.82rem; color: #b9bcbb; margin: 0; max-width: 60em; }

/* Páginas legales */
.legal { padding: 3rem 0 4rem; }
.legal h1 { font-size: clamp(1.8rem, 4vw, 2.4rem); }
.legal h2 { font-size: 1.3rem; margin-top: 2em; }
.legal .draft {
  background: #fff6d6; border: 1px solid #c9a227; border-radius: 6px;
  padding: 0.8rem 1rem; font-size: 0.95rem;
}
.legal table { border-collapse: collapse; width: 100%; }
.legal th, .legal td { border: 1px solid var(--line); padding: 0.5rem 0.7rem; text-align: left; vertical-align: top; }

/* A partir de tableta */
@media (min-width: 700px) {
  .cards-3 { grid-template-columns: repeat(3, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .why { grid-template-columns: 3fr 2fr; gap: 3rem; }
  .case { grid-template-columns: 3fr 2fr; gap: 3rem; }
  .booking { grid-template-columns: 2fr 3fr; gap: 3rem; }
  .form { padding: 2.25rem; }
  .section { padding: 5.5rem 0; }
}

@media (min-width: 960px) {
  .main-nav { display: block; }
  .hero { padding: 5rem 0 6rem; }
  .hero-inner { grid-template-columns: 1.1fr 0.9fr; gap: 3rem; }
  .steps { grid-template-columns: repeat(4, 1fr); }
  .steps li { padding-left: 0; padding-top: 4rem; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .btn { transition: none; }
  .art-dot { display: none; }
}