/* Bierzo Reformas — hoja de estilos única
   Concepto: tonos de pizarra berciana + acento vino Mencía. Tipografía estrecha tipo rotulación de obra. */
:root {
  --bg: #f2f3f1;          /* fondo general, gris piedra claro */
  --surface: #ffffff;
  --ink: #1c262d;         /* pizarra oscura */
  --muted: #56636b;
  --line: #d6dbdb;
  --slate: #24323b;       /* bandas oscuras */
  --on-slate: #ffffff;
  --accent: #8a2234;      /* Mencía */
  --accent-hover: #6f1a29;
  --on-accent: #ffffff;
  --moss: #4f6b4c;
  --ph-a: #c9d0d0;        /* marcadores de foto */
  --ph-b: #b3bcbd;

  --f-display: "Archivo", "Arial Narrow", "Helvetica Neue", Arial, sans-serif;
  --f-body: "Source Sans 3", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;

  --radius: 6px;
  --wrap: 1140px;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #12191e; --surface: #1a232a; --ink: #e9eeef; --muted: #a3b0b6; --line: #2c3a43;
    --slate: #0c1216; --on-slate: #ffffff; --accent: #b8384e; --accent-hover: #cf4a61; --on-accent: #ffffff;
    --moss: #8fb08b; --ph-a: #24313a; --ph-b: #2d3c46; color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #12191e; --surface: #1a232a; --ink: #e9eeef; --muted: #a3b0b6; --line: #2c3a43;
  --slate: #0c1216; --on-slate: #ffffff; --accent: #b8384e; --accent-hover: #cf4a61; --on-accent: #ffffff;
  --moss: #8fb08b; --ph-a: #24313a; --ph-b: #2d3c46; color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } * { transition: none !important; } }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font: 400 1.0625rem/1.65 var(--f-body);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: var(--accent); }
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible {
  outline: 3px solid var(--accent); outline-offset: 2px;
}

.wrap {
  max-width: var(--wrap); margin-inline: auto;
  padding-left: max(16px, env(safe-area-inset-left, 0px));
  padding-right: max(16px, env(safe-area-inset-right, 0px));
}

h1, h2, h3 { font-family: var(--f-display); font-stretch: 78%; line-height: 1.05; text-wrap: balance; margin: 0; letter-spacing: -0.01em; }
h1 { font-size: clamp(2.4rem, 6vw, 4.1rem); font-weight: 800; text-transform: uppercase; }
h2 { font-size: clamp(1.8rem, 3.6vw, 2.6rem); font-weight: 800; text-transform: uppercase; }
h3 { font-size: 1.35rem; font-weight: 700; font-stretch: 85%; }
p { margin: 0; max-width: 65ch; }
.eyebrow {
  font: 700 0.8rem/1 var(--f-display); font-stretch: 100%;
  letter-spacing: 0.14em; text-transform: uppercase; color: var(--accent);
}
.lead { font-size: 1.2rem; color: var(--muted); }

/* Botones: texto blanco sobre fondo sólido */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.5em;
  font: 700 1rem/1 var(--f-display); font-stretch: 90%; letter-spacing: 0.04em; text-transform: uppercase;
  padding: 1rem 1.4rem; border-radius: var(--radius); border: 2px solid transparent;
  text-decoration: none; cursor: pointer; transition: background .15s, border-color .15s;
}
.btn-primary { background: var(--accent); color: var(--on-accent); }
.btn-primary:hover { background: var(--accent-hover); }
.btn-ghost { background: transparent; color: var(--ink); border-color: var(--ink); }
.btn-ghost:hover { background: var(--ink); color: var(--bg); }
.on-slate .btn-ghost { color: var(--on-slate); border-color: var(--on-slate); }
.on-slate .btn-ghost:hover { background: var(--on-slate); color: var(--slate); }

/* Cabecera */
.site-header { background: var(--surface); border-bottom: 1px solid var(--line); position: sticky; top: env(safe-area-inset-top, 0px); z-index: 20; }
body::before { content: ""; position: fixed; inset: 0 0 auto; height: env(safe-area-inset-top, 0px); z-index: 21; background: var(--surface); }
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; gap: 1rem; min-height: 68px; }
.logo { display: flex; align-items: center; gap: 0.6rem; text-decoration: none; color: var(--ink); }
.logo-mark { width: 34px; height: 34px; flex: none; }
.logo-text { font: 800 1.35rem/1 var(--f-display); font-stretch: 75%; text-transform: uppercase; letter-spacing: 0.02em; }
.logo-text span { color: var(--accent); }
.nav { display: flex; align-items: center; gap: 1.4rem; }
.nav a:not(.btn) { color: var(--ink); text-decoration: none; font-weight: 600; }
.nav a:not(.btn):hover { color: var(--accent); }
.nav .btn { padding: 0.75rem 1rem; font-size: 0.9rem; }
@media (max-width: 760px) { .nav a:not(.btn) { display: none; } }

/* Hero */
.hero { padding-block: clamp(2.5rem, 6vw, 5rem); }
.hero-grid { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: clamp(1.5rem, 4vw, 3.5rem); align-items: center; }
.hero-copy { display: grid; gap: 1.3rem; min-width: 0; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 0.8rem; margin-top: 0.4rem; }
.hero-facts { display: flex; flex-wrap: wrap; gap: 0.5rem 1.4rem; padding: 0; margin: 0.4rem 0 0; list-style: none; color: var(--muted); font-weight: 600; }
.hero-facts li::before { content: "✓"; color: var(--moss); font-weight: 800; margin-right: 0.4em; }
@media (max-width: 860px) { .hero-grid { grid-template-columns: 1fr; } }

/* Marcador de foto: se ve hasta que pongas la foto real en /img */
.photo {
  position: relative; margin: 0; border-radius: var(--radius); overflow: hidden;
  aspect-ratio: 4 / 3; max-width: 100%;
  background: repeating-linear-gradient(135deg, var(--ph-a) 0 14px, var(--ph-b) 14px 28px);
}
.photo img { width: 100%; height: 100%; object-fit: cover; position: relative; z-index: 1; }
.photo figcaption {
  position: absolute; left: 12px; bottom: 12px; z-index: 0;
  font: 600 0.8rem/1.3 var(--f-body); color: var(--muted); background: var(--surface); padding: 0.35rem 0.6rem; border-radius: 4px;
}
.photo.tall { aspect-ratio: 4 / 5; }

/* Secciones */
.section { padding-block: clamp(3rem, 7vw, 5.5rem); }
.section-head { display: grid; gap: 0.8rem; margin-bottom: 2.2rem; }
.band { background: var(--slate); color: var(--on-slate); }
.band .lead, .band p { color: color-mix(in srgb, var(--on-slate) 80%, transparent); }
.band .eyebrow { color: #e6a2ad; }
.alt { background: var(--surface); border-block: 1px solid var(--line); }

/* Ventajas */
.pillars { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.6rem 2rem; }
.pillar { display: grid; gap: 0.5rem; align-content: start; padding-top: 1rem; border-top: 3px solid var(--accent); }
.pillar p { color: var(--muted); }
@media (max-width: 900px) { .pillars { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 520px) { .pillars { grid-template-columns: 1fr; } }

/* Servicios */
.services { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.service {
  background: var(--surface); padding: 1.5rem; display: grid; gap: 0.5rem; align-content: start;
  text-decoration: none; color: var(--ink); transition: background .15s;
}
.service:hover { background: var(--bg); }
.service-icon { width: 36px; height: 36px; color: var(--accent); }
.service p { color: var(--muted); font-size: 0.98rem; }
.service .more { font: 700 0.85rem/1 var(--f-display); letter-spacing: 0.08em; text-transform: uppercase; color: var(--accent); margin-top: 0.3rem; }
@media (max-width: 900px) { .services { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .services { grid-template-columns: 1fr; } }

/* Bloque dividido texto + foto */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(1.5rem, 4vw, 3.5rem); align-items: center; }
.split > div { display: grid; gap: 1rem; min-width: 0; }
@media (max-width: 820px) { .split { grid-template-columns: 1fr; } }

/* Proceso (secuencia real, por eso numerado) */
.steps { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.6rem; counter-reset: step; }
.steps li { counter-increment: step; display: grid; gap: 0.5rem; align-content: start; }
.steps li::before {
  content: counter(step); font: 800 2.6rem/1 var(--f-display); font-stretch: 75%; color: var(--accent);
}
.band .steps li::before { color: #e6a2ad; }
@media (max-width: 860px) { .steps { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 480px) { .steps { grid-template-columns: 1fr; } }

/* Zona de servicio */
.zones { display: flex; flex-wrap: wrap; gap: 0.5rem; padding: 0; margin: 0; list-style: none; }
.zones li { border: 1px solid var(--line); background: var(--surface); padding: 0.4rem 0.8rem; border-radius: 999px; font-weight: 600; font-size: 0.95rem; }

/* Listas de contenido */
.checklist { list-style: none; padding: 0; margin: 0; display: grid; gap: 0.7rem; }
.checklist li { padding-left: 1.7rem; position: relative; }
.checklist li::before { content: ""; position: absolute; left: 0; top: 0.45em; width: 0.8rem; height: 0.8rem; background: var(--moss); border-radius: 2px; }
.checklist strong { display: block; }
.two-col { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.5rem 2.5rem; }
@media (max-width: 720px) { .two-col { grid-template-columns: 1fr; } }

.types { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.2rem; }
.type { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 1.4rem; display: grid; gap: 0.5rem; align-content: start; }
.type p { color: var(--muted); }
@media (max-width: 860px) { .types { grid-template-columns: 1fr; } }

/* Factores de precio */
.factors { width: 100%; border-collapse: collapse; }
.factors th, .factors td { text-align: left; padding: 0.85rem 0.6rem; border-bottom: 1px solid var(--line); vertical-align: top; }
.factors th { font-family: var(--f-display); font-stretch: 85%; font-size: 1.05rem; width: 32%; }
.factors td { color: var(--muted); }
@media (max-width: 560px) { .factors th, .factors td { display: block; width: 100%; padding-inline: 0; } .factors th { border-bottom: 0; padding-bottom: 0.2rem; } }

/* FAQ */
.faq { display: grid; gap: 0.6rem; max-width: 860px; }
.faq details { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); }
.faq summary { cursor: pointer; padding: 1.1rem 1.2rem; font-weight: 700; font-size: 1.08rem; list-style: none; display: flex; justify-content: space-between; gap: 1rem; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; font: 800 1.4rem/1 var(--f-display); color: var(--accent); }
.faq details[open] summary::after { content: "–"; }
.faq details > div { padding: 0 1.2rem 1.2rem; color: var(--muted); }

/* Formulario */
.quote-grid { display: grid; grid-template-columns: 0.85fr 1.15fr; gap: clamp(1.5rem, 4vw, 3.5rem); align-items: start; }
.quote-grid > div { display: grid; gap: 1rem; min-width: 0; }
@media (max-width: 860px) { .quote-grid { grid-template-columns: 1fr; } }
.form { background: var(--surface); color: var(--ink); border-radius: var(--radius); padding: clamp(1.2rem, 3vw, 2rem); display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.form .full { grid-column: 1 / -1; }
@media (max-width: 560px) { .form { grid-template-columns: 1fr; } }
.field { display: grid; gap: 0.35rem; min-width: 0; }
.field label { font-weight: 700; font-size: 0.95rem; }
.field input, .field select, .field textarea {
  font: inherit; color: var(--ink); background: var(--bg); width: 100%;
  border: 1px solid var(--line); border-radius: 4px; padding: 0.75rem 0.8rem;
}
.field textarea { min-height: 120px; resize: vertical; }
.consent { display: flex; gap: 0.6rem; align-items: flex-start; font-size: 0.92rem; color: var(--muted); }
.consent input { margin-top: 0.3rem; width: 18px; height: 18px; flex: none; accent-color: var(--accent); }
.consent a { color: var(--accent); }
.hp { position: absolute; left: -9999px; }
.form-status { font-weight: 700; }
.form-status.ok { color: var(--moss); }
.form-status.err { color: var(--accent); }
.form .btn { width: 100%; }

/* Breadcrumb */
.crumbs { font-size: 0.9rem; color: var(--muted); padding-top: 1.2rem; }
.crumbs ol { list-style: none; padding: 0; margin: 0; display: flex; flex-wrap: wrap; gap: 0.4rem; }
.crumbs li + li::before { content: "/"; margin-right: 0.4rem; }
.crumbs a { color: var(--muted); }

/* Pie */
.site-footer { background: var(--slate); color: var(--on-slate); padding-block: 3rem 6rem; }
.footer-grid { display: grid; grid-template-columns: 1.3fr 1fr 1fr; gap: 2rem; }
.footer-grid h3 { font-size: 1rem; text-transform: uppercase; letter-spacing: 0.08em; margin-bottom: 0.8rem; }
.footer-grid ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 0.4rem; }
.site-footer a { color: var(--on-slate); text-decoration: none; opacity: 0.85; }
.site-footer a:hover { opacity: 1; text-decoration: underline; }
.site-footer p { color: color-mix(in srgb, var(--on-slate) 75%, transparent); }
.site-footer .logo { color: var(--on-slate); margin-bottom: 0.8rem; }
.legal { margin-top: 2.5rem; padding-top: 1.2rem; border-top: 1px solid color-mix(in srgb, var(--on-slate) 20%, transparent); display: flex; flex-wrap: wrap; gap: 0.5rem 1.4rem; font-size: 0.9rem; }
@media (max-width: 760px) { .footer-grid { grid-template-columns: 1fr; } }

/* Barra fija móvil */
.mobile-cta {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 30; display: none; gap: 0.6rem;
  background: var(--surface); border-top: 1px solid var(--line);
  padding: 0.6rem max(16px, env(safe-area-inset-right, 0px)) calc(0.6rem + env(safe-area-inset-bottom, 0px)) max(16px, env(safe-area-inset-left, 0px));
}
.mobile-cta .btn { flex: 1; padding: 0.9rem; }
@media (max-width: 760px) { .mobile-cta { display: flex; } }

/* Página legal */
.prose { display: grid; gap: 1rem; max-width: 760px; }
.prose h2 { font-size: 1.5rem; margin-top: 1rem; }
.prose ul { margin: 0; padding-left: 1.2rem; }
.todo { background: color-mix(in srgb, var(--accent) 12%, transparent); padding: 0 0.25em; border-radius: 3px; }

/* Tarjeta lateral de llamada a la acción */
.aside-card { background: var(--slate); color: var(--on-slate); border-radius: var(--radius); padding: clamp(1.4rem, 3vw, 2.2rem); display: grid; gap: 0.8rem; align-content: start; justify-items: start; }
.aside-card p { color: color-mix(in srgb, var(--on-slate) 80%, transparent); }
.aside-card .eyebrow { color: #e6a2ad; }
.split .factors { margin-block: 0.4rem; }