/* Pérgolas en Tijuana
   Concepto: claridad tipo Apple (tipografía del sistema, vidrio, píldoras, radios 10/18/24)
   sobre un plano de obra industrial: bandas de grafito, cotas en monoespaciada
   y el rojo del logotipo como único acento. */
:root {
  /* Color */
  --bg: #f5f5f7;
  --surface: #ffffff;
  --surface-2: #f2f2f4;
  --ink: #1d1d1f;
  --ink-2: #6e6e73;
  --line: rgba(0, 0, 0, .09);
  --fill: rgba(118, 118, 128, .12);
  --accent: #b4161b;            /* rojo del logotipo */
  --accent-hover: #93121a;
  --on-accent: #ffffff;
  --accent-ring: rgba(180, 22, 27, .18);
  --btn: #b4161b;               /* botón principal: rojo de marca con texto blanco */
  --btn-hover: #93121a;
  --on-btn: #ffffff;
  --graphite: #1d1d1f;          /* bandas: proceso, estimado, pie */
  --graphite-2: #2c2c2e;
  --on-graphite: #f5f5f7;
  --on-graphite-2: #a1a1a6;
  --graphite-accent: #ff6961;
  --glass: rgba(255, 255, 255, .72);
  --seg-active: #ffffff;
  --pill: #ffffff;              /* placa blanca del logotipo en ambos modos */
  --ok: #1a7f37;
  --ok-live: #30d158;
  --warn: #a35400;
  --warn-bg: rgba(255, 179, 64, .16);
  --error: #c4231a;
  --wa: #128c4a;
  --wa-hover: #0e7a40;
  --shadow-1: 0 1px 2px rgba(0, 0, 0, .04), 0 4px 14px rgba(0, 0, 0, .05);
  --shadow-2: 0 2px 6px rgba(0, 0, 0, .06), 0 14px 34px rgba(0, 0, 0, .10);

  /* Tipografía */
  --f-sys: -apple-system, BlinkMacSystemFont, "SF Pro Text", "SF Pro Display", "Helvetica Neue", "Segoe UI", Roboto, Arial, sans-serif;
  --f-mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
  --t-xs: .8125rem;
  --t-sm: .9375rem;
  --t-md: 1.0625rem;            /* 17px */
  --t-lg: 1.3125rem;
  --t-xl: clamp(1.75rem, 1.2rem + 2.2vw, 2.6rem);
  --t-xxl: clamp(2rem, 4.6vw, 3.4rem);

  /* Forma y medida */
  --r-sm: 10px;
  --r-md: 18px;
  --r-lg: 24px;
  --gutter-l: max(16px, env(safe-area-inset-left, 0px));
  --gutter-r: max(16px, env(safe-area-inset-right, 0px));
  --maxw: 1200px;
  --header-h: 68px;
  --ease: 160ms ease;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #000000; --surface: #1c1c1e; --surface-2: #232326; --ink: #f5f5f7; --ink-2: #a1a1a6;
    --line: rgba(255, 255, 255, .12); --fill: rgba(118, 118, 128, .24);
    --accent: #ff6961; --accent-hover: #ff8a84; --on-accent: #1d1d1f; --accent-ring: rgba(255, 105, 97, .22); --btn: #d42a2f; --btn-hover: #e5393e; --on-btn: #ffffff;
    --graphite: #1c1c1e; --graphite-2: #2c2c2e; --on-graphite: #f5f5f7; --on-graphite-2: #a1a1a6; --graphite-accent: #ff6961;
    --glass: rgba(22, 22, 23, .72); --seg-active: #636366; --pill: #ffffff;
    --ok: #30d158; --ok-live: #30d158; --warn: #ffb340; --warn-bg: rgba(255, 179, 64, .14); --error: #ff6961;
    --wa: #128c4a; --wa-hover: #17a85a;
    --shadow-1: 0 1px 2px rgba(0, 0, 0, .5), 0 4px 14px rgba(0, 0, 0, .35);
    --shadow-2: 0 2px 6px rgba(0, 0, 0, .5), 0 14px 34px rgba(0, 0, 0, .5);
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #000000; --surface: #1c1c1e; --surface-2: #232326; --ink: #f5f5f7; --ink-2: #a1a1a6;
  --line: rgba(255, 255, 255, .12); --fill: rgba(118, 118, 128, .24);
  --accent: #ff6961; --accent-hover: #ff8a84; --on-accent: #1d1d1f; --accent-ring: rgba(255, 105, 97, .22); --btn: #d42a2f; --btn-hover: #e5393e; --on-btn: #ffffff;
  --graphite: #1c1c1e; --graphite-2: #2c2c2e; --on-graphite: #f5f5f7; --on-graphite-2: #a1a1a6; --graphite-accent: #ff6961;
  --glass: rgba(22, 22, 23, .72); --seg-active: #636366; --pill: #ffffff;
  --ok: #30d158; --ok-live: #30d158; --warn: #ffb340; --warn-bg: rgba(255, 179, 64, .14); --error: #ff6961;
  --wa: #128c4a; --wa-hover: #17a85a;
  --shadow-1: 0 1px 2px rgba(0, 0, 0, .5), 0 4px 14px rgba(0, 0, 0, .35);
  --shadow-2: 0 2px 6px rgba(0, 0, 0, .5), 0 14px 34px rgba(0, 0, 0, .5);
  color-scheme: dark;
}

/* Base */
*, *::before, *::after { box-sizing: border-box; }
[hidden] { display: none !important; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--header-h) + 16px); -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font-family: var(--f-sys); font-size: var(--t-md); line-height: 1.47; letter-spacing: -.012em;
  -webkit-font-smoothing: antialiased;
}
body::before { content: ""; position: fixed; inset: 0 0 auto; height: env(safe-area-inset-top, 0px); z-index: 60; background: var(--bg); }
img { max-width: 100%; height: auto; display: block; }
h1, h2, h3 { margin: 0; text-wrap: balance; color: inherit; }
h2 { font-size: var(--t-xl); font-weight: 700; line-height: 1.1; letter-spacing: -.028em; }
h3 { font-size: var(--t-lg); font-weight: 600; line-height: 1.25; letter-spacing: -.02em; }
p { margin: 0; }
a { color: var(--accent); text-underline-offset: .18em; }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; border-radius: 6px; }
.mono { font-family: var(--f-mono); letter-spacing: 0; }
.eyebrow { font-size: var(--t-sm); font-weight: 600; color: var(--accent); letter-spacing: -.005em; }
.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; }
.skip { position: absolute; left: var(--gutter-l); top: -100px; z-index: 100; background: var(--btn); color: var(--on-btn); padding: 10px 18px; border-radius: 999px; font-weight: 600; }
.skip:focus { top: calc(env(safe-area-inset-top, 0px) + 10px); }
.wrap { width: 100%; max-width: calc(var(--maxw) + 32px); margin-inline: auto; padding-left: var(--gutter-l); padding-right: var(--gutter-r); }
.card-surface { background: var(--surface); border: 1px solid var(--line); border-radius: var(--r-lg); box-shadow: var(--shadow-1); }

/* Botones en píldora */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 48px; padding: 0 24px; border: 0; border-radius: 999px;
  font: 600 var(--t-md)/1 var(--f-sys); letter-spacing: -.01em; text-decoration: none; cursor: pointer;
  transition: background-color var(--ease), color var(--ease), transform var(--ease);
}
.btn:active { transform: scale(.98); }
.btn-sm { min-height: 40px; padding: 0 18px; font-size: var(--t-sm); }
.btn-block { width: 100%; }
.btn-red { background: var(--btn); color: var(--on-btn); }
.btn-red:hover { background: var(--btn-hover); }
.btn-glass { background: rgba(255, 255, 255, .16); color: #fff; box-shadow: inset 0 0 0 1px rgba(255, 255, 255, .35); -webkit-backdrop-filter: blur(12px); backdrop-filter: blur(12px); }
.btn-glass:hover { background: rgba(255, 255, 255, .26); }
.btn-gray { background: var(--fill); color: var(--ink); }
.btn-gray:hover { background: var(--line); }
.btn-wa { background: var(--wa); color: #fff; }
.btn-wa:hover { background: var(--wa-hover); }
.btn[aria-disabled="true"] { opacity: .45; pointer-events: none; }
.link-btn {
  appearance: none; border: 0; background: none; padding: 0; cursor: pointer; justify-self: start;
  color: var(--accent); font: 600 var(--t-md)/1.4 var(--f-sys); letter-spacing: -.01em;
  min-height: 44px; display: inline-flex; align-items: center; gap: 6px;
}
.link-btn::after { content: "›"; font-size: 1.3em; line-height: 1; transition: transform var(--ease); }
.link-btn:hover::after { transform: translateX(3px); }

/* Barra de navegación de vidrio */
.site-header {
  position: sticky; top: env(safe-area-inset-top, 0px); z-index: 50;
  background: var(--glass); border-bottom: 1px solid var(--line);
  -webkit-backdrop-filter: saturate(180%) blur(20px); backdrop-filter: saturate(180%) blur(20px);
}
.bar { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: var(--header-h); }
.brand { display: inline-flex; flex: none; border-radius: 12px; }
.brand-pill { display: inline-flex; background: var(--pill); padding: 3px 10px; border-radius: 12px; box-shadow: 0 0 0 1px var(--line); }
.brand-pill img { width: 80px; height: auto; }
.nav { display: flex; align-items: center; gap: 24px; }
.nav ul { display: flex; gap: 4px; list-style: none; margin: 0; padding: 0; }
.nav ul a {
  color: var(--ink); text-decoration: none; font-size: var(--t-sm); font-weight: 500;
  padding: 0 12px; min-height: 40px; border-radius: 999px; display: inline-flex; align-items: center; transition: background-color var(--ease);
}
.nav ul a:hover { background: var(--fill); }
.nav-toggle { display: none; }
@media (max-width: 980px) {
  .nav-toggle {
    display: inline-flex; align-items: center; gap: 10px; min-height: 44px; padding: 0 16px;
    background: var(--fill); color: var(--ink); border: 0; border-radius: 999px;
    font: 600 var(--t-sm) var(--f-sys); cursor: pointer;
  }
  .nav-toggle-lines, .nav-toggle-lines::before, .nav-toggle-lines::after { display: block; width: 16px; height: 2px; border-radius: 2px; background: currentColor; position: relative; }
  .nav-toggle-lines::before, .nav-toggle-lines::after { content: ""; position: absolute; left: 0; }
  .nav-toggle-lines::before { top: -5px; } .nav-toggle-lines::after { top: 5px; }
  .nav {
    position: absolute; left: 0; right: 0; top: 100%; display: none;
    flex-direction: column; align-items: stretch; gap: 14px;
    background: var(--surface); border-bottom: 1px solid var(--line); box-shadow: var(--shadow-2);
    padding: 8px var(--gutter-r) 20px var(--gutter-l);
  }
  .nav.open { display: flex; }
  .nav ul { flex-direction: column; gap: 0; }
  .nav ul a { display: flex; padding: 12px 4px; min-height: 48px; border-radius: 0; border-bottom: 1px solid var(--line); font-size: var(--t-md); }
  .nav ul a:hover { background: transparent; }
}

/* Hero */
.hero { position: relative; color: #fff; background: #111; overflow: hidden; isolation: isolate; }
.hero-img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; z-index: -2; }
.hero::after {
  content: ""; position: absolute; inset: 0; z-index: -1;
  background: linear-gradient(90deg, rgba(10, 10, 12, .86) 0%, rgba(10, 10, 12, .64) 46%, rgba(10, 10, 12, .1) 100%),
              linear-gradient(0deg, rgba(10, 10, 12, .5) 0%, rgba(10, 10, 12, 0) 45%);
}
.hero-inner { padding-block: clamp(72px, 10vw, 136px) clamp(32px, 4vw, 48px); display: grid; gap: 20px; }
.hero-inner > * { max-width: 38rem; }
.hero .eyebrow { color: #ff8f8a; }
.hero h1 { font-size: var(--t-xxl); font-weight: 700; line-height: 1.07; letter-spacing: -.03em; max-width: 17ch; }
.hero-lead { font-size: var(--t-lg); line-height: 1.42; color: rgba(255, 255, 255, .86); letter-spacing: -.016em; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; padding-top: 4px; }
.hero-tag { font-size: var(--t-xs); color: rgba(255, 255, 255, .72); padding-top: clamp(16px, 4vw, 40px); }
.hero-tag .mono { text-transform: uppercase; letter-spacing: .08em; margin-right: 6px; }

/* Cota de plano */
.dim { position: relative; padding-top: 10px; color: var(--ink-2); }
.dim::before { content: ""; position: absolute; left: 0; right: 0; top: 4px; border-top: 1px solid currentColor; opacity: .45; }
.dim::after { content: ""; position: absolute; left: 0; right: 0; top: 0; height: 9px; border-left: 1px solid currentColor; border-right: 1px solid currentColor; opacity: .45; }
.dim .mono { font-size: var(--t-xs); color: var(--ink); }

/* Secciones */
.section { padding-block: clamp(64px, 8vw, 112px); }
.section-tight { padding-block: clamp(48px, 6vw, 80px); }
.section-alt { background: var(--surface); }
.section-head { display: grid; gap: 12px; margin-bottom: clamp(28px, 4vw, 48px); max-width: 48rem; }
.section-lead { color: var(--ink-2); font-size: var(--t-lg); line-height: 1.42; letter-spacing: -.016em; max-width: 72ch; }

/* Respuesta rápida */
.respuesta { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr); gap: clamp(28px, 4vw, 56px); align-items: center; }
@media (max-width: 899px) { .respuesta { grid-template-columns: 1fr; } }
.respuesta-texto { display: grid; gap: 14px; }
.answer { font-size: var(--t-lg); line-height: 1.45; letter-spacing: -.016em; max-width: 60ch; }
.fuente { font-size: var(--t-xs); color: var(--ink-2); }
.tabla-wrap { overflow-x: auto; padding: 8px 4px; }
.tabla { width: 100%; border-collapse: collapse; font-variant-numeric: tabular-nums; font-size: var(--t-sm); min-width: 460px; }
.tabla caption { text-align: left; font-weight: 600; padding: 12px 16px 8px; letter-spacing: -.01em; }
.tabla th, .tabla td { padding: 12px 16px; text-align: right; border-top: 1px solid var(--line); white-space: nowrap; }
.tabla thead th { font-size: var(--t-xs); font-weight: 500; color: var(--ink-2); border-top: 0; }
.tabla th:first-child { text-align: left; }
.tabla tbody th { font-weight: 600; }

/* Ventajas */
.ventajas { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; }
@media (max-width: 1023px) { .ventajas { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 560px) { .ventajas { grid-template-columns: 1fr; } }
.tile { background: var(--surface); border: 1px solid var(--line); border-radius: var(--r-md); padding: 24px; display: grid; gap: 10px; align-content: start; }
.tile svg { width: 36px; height: 36px; color: var(--accent); }
.tile h3 { font-size: var(--t-md); }
.tile p { color: var(--ink-2); font-size: var(--t-sm); }

/* Control segmentado */
.segmented-scroll { overflow-x: auto; margin-bottom: 28px; padding: 2px; -webkit-overflow-scrolling: touch; scrollbar-width: none; }
.segmented-scroll::-webkit-scrollbar { display: none; }
.segmented { display: inline-flex; gap: 2px; padding: 3px; background: var(--fill); border-radius: var(--r-sm); }
.seg {
  flex: none; display: inline-flex; align-items: center; gap: 6px; min-height: 40px; padding: 0 16px;
  border: 0; border-radius: 8px; background: transparent; color: var(--ink);
  font: 500 var(--t-sm)/1 var(--f-sys); letter-spacing: -.01em; cursor: pointer; white-space: nowrap;
  transition: background-color var(--ease), box-shadow var(--ease);
}
.seg:hover { background: var(--line); }
.seg[aria-pressed="true"] { background: var(--seg-active); font-weight: 600; box-shadow: 0 1px 3px rgba(0, 0, 0, .12), 0 0 0 .5px rgba(0, 0, 0, .04); }
.seg-n { font-family: var(--f-mono); font-size: var(--t-xs); color: var(--ink-2); }

/* Catálogo */
.grid-catalogo { display: grid; gap: 20px; grid-template-columns: repeat(4, minmax(0, 1fr)); }
@media (max-width: 1179px) { .grid-catalogo { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 620px) { .grid-catalogo { grid-template-columns: 1fr; } }
.card {
  display: flex; flex-direction: column; min-width: 0; overflow: hidden;
  background: var(--bg); border: 1px solid var(--line); border-radius: var(--r-md);
  transition: transform var(--ease), box-shadow var(--ease);
}
.section-alt .card { background: var(--surface); box-shadow: var(--shadow-1); }
.card:hover { transform: translateY(-1px); box-shadow: var(--shadow-2); }
.card-media { position: relative; aspect-ratio: 3 / 2; max-width: 100%; background: var(--graphite-2); }
.card-media img { width: 100%; height: 100%; object-fit: cover; }
.badge {
  position: absolute; left: 12px; top: 12px; padding: 5px 11px; border-radius: 999px;
  background: rgba(20, 20, 22, .62); color: #fff; font-size: var(--t-xs); font-weight: 600;
  -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px);
}
.card-body { display: flex; flex-direction: column; gap: 12px; padding: 18px 18px 20px; flex: 1; }
.card h3 { font-size: var(--t-lg); }
.card ul { margin: 0; padding: 0; list-style: none; display: grid; gap: 5px; font-size: var(--t-sm); color: var(--ink-2); }
.card li { padding-left: 16px; position: relative; }
.card li::before { content: ""; position: absolute; left: 0; top: .62em; width: 6px; height: 6px; border-radius: 50%; background: var(--accent); }
.card-precio { margin-top: auto; padding: 14px; border-radius: 12px; background: var(--surface-2); display: grid; gap: 2px; }
.card-precio .label { font-size: var(--t-xs); color: var(--ink-2); }
.card-precio strong { font-size: 1.6rem; font-weight: 700; letter-spacing: -.03em; font-variant-numeric: tabular-nums; line-height: 1.15; }
.card-precio .sub { font-size: var(--t-xs); color: var(--ink-2); font-variant-numeric: tabular-nums; }
.card .btn { width: 100%; }

.aviso {
  margin-top: 28px; padding: 16px 20px; border-radius: 12px; background: var(--warn-bg);
  color: var(--ink); font-size: var(--t-sm); max-width: 90ch;
}
.aviso strong { color: var(--warn); }

/* Proyectos */
.proyectos { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 48px 32px; }
@media (max-width: 899px) { .proyectos { grid-template-columns: 1fr; } }
.proyecto { display: grid; gap: 18px; align-content: start; min-width: 0; }
.proyecto img { width: 100%; aspect-ratio: 3 / 2; object-fit: cover; border-radius: var(--r-lg); max-width: 100%; }
.proyecto-body { display: grid; gap: 8px; }
.proyecto-body p { color: var(--ink-2); }
.proyecto-body strong { color: var(--ink); font-weight: 600; font-variant-numeric: tabular-nums; }

/* Proceso (banda grafito) */
.band { background: var(--graphite); color: var(--on-graphite); }
.band .eyebrow { color: var(--graphite-accent); }
.band .section-lead { color: var(--on-graphite-2); }
.pasos { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 0; counter-reset: paso; }
.pasos li { counter-increment: paso; position: relative; padding: 56px 20px 0 0; display: grid; gap: 8px; align-content: start; }
.pasos li::before {
  content: counter(paso); position: absolute; top: 0; left: 0; z-index: 1;
  width: 34px; height: 34px; border-radius: 50%; display: grid; place-items: center;
  font: 600 var(--t-sm)/1 var(--f-mono); color: var(--on-graphite); background: var(--graphite-2);
  box-shadow: 0 0 0 1px rgba(255, 255, 255, .14);
}
.pasos li::after { content: ""; position: absolute; left: 34px; right: 0; top: 17px; border-top: 1px dashed rgba(255, 255, 255, .22); }
.pasos li:last-child::after { display: none; }
.pasos h3 { font-size: var(--t-md); }
.pasos p { color: var(--on-graphite-2); font-size: var(--t-sm); }
@media (max-width: 980px) {
  .pasos { grid-template-columns: 1fr; }
  .pasos li { padding: 4px 0 28px 54px; }
  .pasos li::after { left: 17px; right: auto; top: 38px; bottom: 4px; border-top: 0; border-left: 1px dashed rgba(255, 255, 255, .22); }
}

/* Preguntas frecuentes */
.faq-wrap { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.7fr); gap: 40px; align-items: start; }
@media (max-width: 899px) { .faq-wrap { grid-template-columns: 1fr; gap: 0; } }
.faq { background: var(--surface); border: 1px solid var(--line); border-radius: var(--r-md); overflow: hidden; }
.faq details + details { border-top: 1px solid var(--line); }
.faq summary {
  list-style: none; cursor: pointer; display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 18px 20px; min-height: 56px;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary:hover { background: var(--surface-2); }
.faq summary h3 { font-size: var(--t-md); font-weight: 600; letter-spacing: -.012em; }
.faq-icon { flex: none; position: relative; width: 26px; height: 26px; border-radius: 50%; background: var(--fill); transition: transform 200ms ease; }
.faq-icon::before, .faq-icon::after { content: ""; position: absolute; left: 50%; top: 50%; width: 11px; height: 2px; margin: -1px 0 0 -5.5px; background: var(--ink); border-radius: 2px; }
.faq-icon::after { transform: rotate(90deg); }
.faq details[open] .faq-icon { transform: rotate(45deg); }
.faq details p { padding: 0 20px 20px; color: var(--ink-2); max-width: 72ch; }

/* Cotizador */
.cotizador { display: grid; grid-template-columns: minmax(0, 1.45fr) minmax(0, 1fr); gap: 28px; align-items: start; }
@media (max-width: 899px) { .cotizador { grid-template-columns: 1fr; } }
#cotizar { background: var(--bg); }
.form { display: grid; gap: 24px; min-width: 0; padding: clamp(20px, 3vw, 32px); }
fieldset { border: 0; margin: 0; padding: 0; display: grid; gap: 16px; min-width: 0; }
legend { font-size: var(--t-lg); font-weight: 600; letter-spacing: -.02em; padding: 0; margin-bottom: 6px; }
.row { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
@media (max-width: 520px) { .row { grid-template-columns: 1fr; } }
.field { display: grid; gap: 6px; min-width: 0; align-content: start; }
label { font-weight: 600; font-size: var(--t-sm); }
.opt { font-weight: 400; color: var(--ink-2); }
input, select, textarea {
  width: 100%; min-height: 48px; padding: 11px 14px;
  border: 1px solid var(--line); border-radius: 12px; background: var(--surface-2); color: var(--ink);
  font: 400 var(--t-md)/1.35 var(--f-sys); letter-spacing: -.012em;
  transition: border-color var(--ease), box-shadow var(--ease), background-color var(--ease);
}
select { appearance: none; -webkit-appearance: none; padding-right: 40px;
  background-image: linear-gradient(45deg, transparent 50%, var(--ink-2) 50%), linear-gradient(135deg, var(--ink-2) 50%, transparent 50%);
  background-position: calc(100% - 20px) 50%, calc(100% - 15px) 50%; background-size: 5px 5px; background-repeat: no-repeat; }
select:disabled { opacity: .6; }
textarea { min-height: 112px; resize: vertical; }
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--accent); background-color: var(--surface); box-shadow: 0 0 0 4px var(--accent-ring); }
[aria-invalid="true"] { border-color: var(--error); box-shadow: 0 0 0 3px rgba(196, 35, 26, .14); }
.hint { font-size: var(--t-xs); color: var(--ink-2); }
.hint.center { text-align: center; }
.error { font-size: var(--t-xs); color: var(--error); font-weight: 600; }
.form-errores { border-radius: 12px; padding: 14px 18px; background: rgba(196, 35, 26, .08); border: 1px solid rgba(196, 35, 26, .3); }
.form-errores ul { margin: 6px 0 0; padding-left: 20px; }
.form-errores a { color: var(--error); font-weight: 600; }

.estimado { display: grid; gap: 20px; min-width: 0; position: sticky; top: calc(env(safe-area-inset-top, 0px) + var(--header-h) + 16px); }
@media (max-width: 899px) { .estimado { position: static; } }
.estimado-card { background: var(--graphite); color: var(--on-graphite); border-radius: var(--r-lg); padding: 24px; display: grid; gap: 16px; box-shadow: var(--shadow-2); }
.estimado-head { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 8px 12px; }
.estimado-head h3 { font-size: var(--t-lg); }
.live { display: inline-flex; align-items: center; gap: 8px; font-size: var(--t-xs); color: var(--on-graphite-2); }
.live-dot { position: relative; width: 8px; height: 8px; border-radius: 50%; background: var(--ok-live); }
.live-dot::after { content: ""; position: absolute; inset: 0; border-radius: 50%; background: var(--ok-live); animation: ping 1.8s ease-out infinite; }
@keyframes ping { 0% { transform: scale(1); opacity: .7; } 80%, 100% { transform: scale(2.6); opacity: 0; } }
.ajustes { margin: 0; display: grid; gap: 2px; border-radius: 12px; overflow: hidden; }
.ajustes div { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; padding: 11px 14px; background: rgba(255, 255, 255, .07); font-size: var(--t-sm); }
.ajustes dt { color: var(--on-graphite-2); }
.ajustes dd { margin: 0; text-align: right; font-weight: 600; font-variant-numeric: tabular-nums; min-width: 0; overflow-wrap: anywhere; }
.estimado-total { display: grid; gap: 2px; }
.estimado-label { font-size: var(--t-sm); color: var(--on-graphite-2); }
.estimado-total output { font-size: clamp(2.1rem, 1.6rem + 1.6vw, 2.8rem); font-weight: 700; letter-spacing: -.035em; line-height: 1.08; font-variant-numeric: tabular-nums; overflow-wrap: anywhere; }
.estimado-total .iva { font-size: var(--t-sm); color: var(--on-graphite-2); }
.estimado-alerta { font-size: var(--t-sm); color: #ffcf87; background: rgba(255, 179, 64, .12); border-radius: 10px; padding: 10px 12px; }
.estimado-nota { font-size: var(--t-xs); color: var(--on-graphite-2); }

.resultado { padding: 22px; display: grid; gap: 12px; border-radius: var(--r-md); }
.resultado h3 { font-size: var(--t-lg); }
.resultado label { font-size: var(--t-xs); color: var(--ink-2); font-weight: 500; }
.resultado textarea { font-size: var(--t-sm); min-height: 230px; }
.resultado-acciones { display: flex; flex-wrap: wrap; gap: 10px; }
.resultado-acciones .btn { flex: 1 1 150px; }
.estado-pendiente { color: var(--ink); background: var(--warn-bg); border-radius: 10px; padding: 10px 12px; font-size: var(--t-sm); }

/* Pie */
.site-footer { background: var(--graphite); color: var(--on-graphite-2); padding-block: 56px calc(56px + 64px); font-size: var(--t-sm); }
.footer-grid { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(0, .7fr) minmax(0, 1.4fr); gap: 32px 40px; }
@media (max-width: 899px) { .footer-grid { grid-template-columns: 1fr 1fr; } .footer-about { grid-column: 1 / -1; } }
@media (max-width: 560px) { .footer-grid { grid-template-columns: 1fr; } }
.footer-brand { display: grid; gap: 16px; justify-items: start; }
.brand-pill-lg { padding: 8px 16px; border-radius: var(--r-md); }
.brand-pill-lg img { width: 170px; }
.footer-h { font-size: var(--t-md); color: var(--on-graphite); letter-spacing: -.012em; margin-bottom: 4px; }
.footer-about { display: grid; gap: 10px; align-content: start; }
.site-footer ul { list-style: none; margin: 0; padding: 0; display: grid; }
.site-footer a { color: var(--on-graphite); text-decoration: none; display: inline-flex; align-items: center; min-height: 40px; }
.site-footer a:hover { text-decoration: underline; }
.footer-legal { font-size: var(--t-xs); padding-top: 8px; }

/* 404 */
.notfound .wrap { display: grid; gap: 16px; justify-items: start; }
.notfound h1 { font-size: var(--t-xxl); font-weight: 700; line-height: 1.07; letter-spacing: -.03em; }
.notfound-links { margin: 0; padding-left: 20px; display: grid; gap: 6px; }
.notfound-links a { display: inline-block; padding: 6px 0; }

/* WhatsApp flotante */
.wa-float {
  position: fixed; z-index: 40;
  right: calc(16px + env(safe-area-inset-right, 0px)); bottom: calc(16px + env(safe-area-inset-bottom, 0px));
  display: inline-flex; align-items: center; gap: 8px; min-height: 52px; padding: 0 20px 0 15px;
  background: var(--wa); color: #fff; text-decoration: none; font-weight: 600; border-radius: 999px;
  box-shadow: 0 2px 6px rgba(0, 0, 0, .18), 0 10px 28px rgba(0, 0, 0, .24); transition: background-color var(--ease), transform var(--ease);
}
.wa-float:hover { background: var(--wa-hover); transform: translateY(-1px); }
.wa-float svg { width: 24px; height: 24px; }
@media (max-width: 420px) { .wa-float span { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); } .wa-float { padding: 0 14px; } }

@media (max-width: 620px) {
  :root { --header-h: 60px; }
  .brand-pill img { width: 68px; }
  .hero-inner { padding-block: 56px 28px; }
  .hero::after { background: linear-gradient(180deg, rgba(10, 10, 12, .58) 0%, rgba(10, 10, 12, .86) 100%); }
  .hero-actions .btn { flex: 1 1 100%; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; animation: none !important; }
  .card:hover, .wa-float:hover { transform: none; }
}