/* =========================================================================
   Ingeniería Tecapli — hoja de estilos del sitio
   Proyecto personalizado Kodith (nivel Profesional, $9,000 MXN)
   Diseño propio sobre la marca del cliente, no plantilla del catálogo.
   Reglas: sin WebGL, sin scroll-jacking, sin preloader, sin autoplay;
   respeta prefers-reduced-motion; solo imágenes WebP.
   ========================================================================= */

/* ---------- Tipografías auto-alojadas (sin terceros) ---------- */
/* El bloque @font-face vive en ../fonts/fuentes.css y se enlaza en cada página. */

/* ---------- Tokens ---------- */
:root {
  --bg: #0f1317;
  --surface: #161b21;
  --surface-2: #1c232a;
  --line: #2b333c;
  --text: #e9edf1;
  --muted: #a9b4bf;
  --accent: #ff7a1a;
  --accent-hover: #ff9247;
  --accent-ink: #1a1205;
  /* Variante oscura del acento: texto sobre fondo claro con contraste AA
     (#b04a00 da 5.5:1 sobre blanco; el naranja claro solo llega a 2.6:1). */
  --accent-on-light: #b04a00;

  --light: #f3f4f5;
  --light-surface: #ffffff;
  --ink: #12161a;
  --ink-muted: #4d5761;
  --light-line: #dcdfe3;

  --max: 1140px;
  --radius: 10px;
  --shadow: 0 10px 30px rgba(0, 0, 0, .28);
  --font-display: "Archivo", "Segoe UI", Arial, sans-serif;
  --font-body: "Inter", "Segoe UI", Arial, sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 800;
  line-height: 1.14;
  letter-spacing: -.01em;
  margin: 0 0 .5em;
}

h1 { font-size: clamp(2rem, 5vw, 3.4rem); }
h2 { font-size: clamp(1.6rem, 3.6vw, 2.5rem); }
h3 { font-size: clamp(1.1rem, 2vw, 1.35rem); }

p { margin: 0 0 1em; }

a { color: var(--accent); }

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

.container {
  width: min(100% - 2.5rem, var(--max));
  margin-inline: auto;
}

.eyebrow {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: .8rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 .75rem;
}

.section { padding: clamp(3.5rem, 7vw, 5.5rem) 0; }
.section--light { background: var(--light); color: var(--ink); }
.section--light h2, .section--light h3 { color: var(--ink); }
.section--light p { color: var(--ink-muted); }
.section--alt { background: var(--surface); }

.lede {
  font-size: clamp(1rem, 1.6vw, 1.15rem);
  color: var(--muted);
  max-width: 62ch;
}

.section--light .lede { color: var(--ink-muted); }

/* Acento oscuro cuando el texto cae sobre fondo claro (contraste AA). */
.section--light .eyebrow,
.section--light .card-num,
.section--light a,
.card-num {
  color: var(--accent-on-light);
}
.section--light .btn--primary { color: var(--accent-ink); }

/* ---------- Botones ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: .55rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: .95rem;
  padding: .85rem 1.5rem;
  border-radius: 999px;
  text-decoration: none;
  border: 2px solid transparent;
  cursor: pointer;
  transition: background-color .18s ease, color .18s ease, border-color .18s ease;
}

.btn--primary { background: var(--accent); color: var(--accent-ink); }
.btn--primary:hover { background: var(--accent-hover); }

.btn--ghost { border-color: var(--line); color: var(--text); background: transparent; }
.btn--ghost:hover { border-color: var(--accent); color: var(--accent); }

.section--light .btn--ghost { border-color: var(--light-line); color: var(--ink); }
.section--light .btn--ghost:hover { border-color: var(--accent); color: var(--accent); }

.btn svg { width: 18px; height: 18px; flex: none; }

/* ---------- Salto al contenido (accesibilidad) ---------- */
.skip {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--accent);
  color: var(--accent-ink);
  padding: .7rem 1.1rem;
  z-index: 200;
  font-weight: 700;
}
.skip:focus { left: 0; }

/* ---------- Encabezado ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(15, 19, 23, .96);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(6px);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.25rem;
  min-height: 72px;
}

.brand {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
}
.brand-logo { display: block; width: 108px; height: auto; flex: none; }

.nav-list {
  display: flex;
  align-items: center;
  gap: .35rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-list a {
  display: block;
  padding: .55rem .8rem;
  border-radius: 8px;
  text-decoration: none;
  color: var(--text);
  font-size: .93rem;
  font-weight: 500;
  transition: background-color .18s ease, color .18s ease;
}
.nav-list a:hover { background: var(--surface-2); color: var(--accent); }
.nav-list a[aria-current="page"] { color: var(--accent); font-weight: 600; }

.header-cta { flex: none; }

.nav-toggle {
  display: none;
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--text);
  padding: .55rem .7rem;
  font-size: .85rem;
  font-weight: 600;
  cursor: pointer;
  font-family: var(--font-body);
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
}

.hero-media {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}
.hero-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(100deg, rgba(15, 19, 23, .97) 0%, rgba(15, 19, 23, .9) 45%, rgba(15, 19, 23, .55) 100%);
}

.hero-inner {
  position: relative;
  z-index: 1;
  padding: clamp(4rem, 9vw, 7rem) 0;
  max-width: 47rem;
}

.hero h1 { margin-bottom: .6rem; }

.hero-sub {
  font-size: clamp(1.02rem, 1.8vw, 1.2rem);
  color: var(--muted);
  max-width: 54ch;
  margin-bottom: 1.75rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: .85rem;
  margin-bottom: 2.5rem;
}

.hero-facts {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem 2rem;
  list-style: none;
  margin: 0;
  padding: 1.1rem 0 0;
  border-top: 1px solid var(--line);
}
.hero-facts li {
  font-size: .88rem;
  color: var(--muted);
  display: flex;
  align-items: center;
  gap: .5rem;
}
.hero-facts li::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent);
  flex: none;
}

/* ---------- Cifras ---------- */
.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}
.stat {
  background: var(--surface);
  padding: 1.6rem 1.4rem;
}
.stat b {
  display: block;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.7rem, 3.5vw, 2.3rem);
  color: var(--accent);
  line-height: 1;
  margin-bottom: .4rem;
}
.stat span { font-size: .9rem; color: var(--muted); }

/* ---------- Rejillas de tarjetas ---------- */
.grid {
  display: grid;
  gap: 1.25rem;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
}
.grid--2 { grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); }
/* Cuatro columnas en escritorio: evita tarjetas sueltas en una fila. */
.grid--4 { grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); }

.card {
  background: var(--light-surface);
  border: 1px solid var(--light-line);
  border-radius: var(--radius);
  padding: 1.5rem;
  margin: 0;
}
.card h3 { margin-bottom: .5rem; }
.card p { margin: 0; color: var(--ink-muted); font-size: .95rem; }

.card--dark {
  background: var(--surface-2);
  border-color: var(--line);
}
.card--dark p { color: var(--muted); }

.card-num {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: .8rem;
  letter-spacing: .12em;
  color: var(--accent);
  display: block;
  margin-bottom: .6rem;
}

/* Servicio con foto */
.card--photo { padding: 0; overflow: hidden; display: flex; flex-direction: column; }
.card--photo img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; }
.card--photo .card-body { padding: 1.25rem 1.35rem 1.5rem; }

/* ---------- Listas de servicios ---------- */
.svc-group + .svc-group { margin-top: 2.5rem; }
.svc-group h3 {
  display: flex;
  align-items: center;
  gap: .7rem;
  margin-bottom: 1rem;
}
.svc-group h3::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--light-line);
}

.svc-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: .65rem;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
}
.svc-list li {
  background: var(--light-surface);
  border: 1px solid var(--light-line);
  border-left: 4px solid var(--accent);
  border-radius: 8px;
  padding: .9rem 1.1rem;
  font-size: .96rem;
  color: var(--ink);
  font-weight: 500;
}

/* ---------- Galería ---------- */
.gallery {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
}
.gallery figure { margin: 0; }
.gallery img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--surface-2);
}
.gallery figcaption {
  font-size: .85rem;
  color: var(--muted);
  padding: .6rem .2rem 0;
}
.section--light .gallery figcaption { color: var(--ink-muted); }

/* ---------- Bloque CTA ---------- */
.cta-band {
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: clamp(1.75rem, 4vw, 2.75rem);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}
.cta-band h2 { margin: 0 0 .4rem; font-size: clamp(1.35rem, 2.6vw, 1.9rem); }
.cta-band p { margin: 0; color: var(--muted); max-width: 52ch; }

/* ---------- Contacto ---------- */
.contact-grid {
  display: grid;
  gap: 2rem;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
}

.contact-list { list-style: none; margin: 0 0 1.75rem; padding: 0; }
.contact-list li {
  display: flex;
  gap: .9rem;
  align-items: flex-start;
  padding: .95rem 0;
  border-bottom: 1px solid var(--light-line);
}
.contact-list li:first-child { border-top: 1px solid var(--light-line); }
.contact-list svg { width: 22px; height: 22px; color: var(--accent); flex: none; margin-top: .2rem; }
.contact-list b { display: block; font-size: .8rem; letter-spacing: .1em; text-transform: uppercase; color: var(--ink-muted); font-weight: 600; }
.contact-list a, .contact-list span { color: var(--ink); text-decoration: none; font-size: 1.02rem; font-weight: 500; }
.contact-list a:hover { color: var(--accent); }

/* Tres números de WhatsApp, apilados bajo la etiqueta. */
.wa-numeros { display: grid; gap: .15rem; }
.wa-numeros a { font-variant-numeric: tabular-nums; }

.form {
  background: var(--light-surface);
  border: 1px solid var(--light-line);
  border-radius: var(--radius);
  padding: clamp(1.4rem, 3vw, 2rem);
}
.field { margin-bottom: 1.1rem; }
.field label {
  display: block;
  font-size: .82rem;
  font-weight: 600;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--ink-muted);
  margin-bottom: .4rem;
}
.field input, .field textarea {
  width: 100%;
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--ink);
  background: #fff;
  border: 1px solid var(--light-line);
  border-radius: 8px;
  padding: .8rem .9rem;
}
.field input:focus, .field textarea:focus {
  outline: 3px solid var(--accent);
  outline-offset: 1px;
  border-color: var(--accent);
}
.field textarea { min-height: 140px; resize: vertical; }
.form-note { font-size: .84rem; color: var(--ink-muted); margin: .9rem 0 0; }

/* ---------- Selector de WhatsApp (diálogo) ---------- */
/* Se crea con JS al pulsar cualquier botón de WhatsApp; los enlaces siguen
   apuntando al número principal como respaldo sin JavaScript. Sin animación:
   se ve igual con y sin prefers-reduced-motion. */
.wa-dialog {
  background: var(--surface-2);
  color: var(--text);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 0;
  width: min(100% - 2.5rem, 24rem);
}
.wa-dialog::backdrop { background: rgba(9, 12, 15, .72); }

.wa-dialog-caja { padding: 1.75rem 1.6rem 1.6rem; }
.wa-dialog h2 { font-size: 1.3rem; margin-bottom: .35rem; }
.wa-dialog-sub { font-size: .92rem; color: var(--muted); margin-bottom: 1.3rem; }

.wa-dialog-lista { display: grid; gap: .6rem; margin-bottom: 1rem; }
.wa-dialog-opcion, .wa-dialog-cancelar {
  width: 100%;
  justify-content: center;
  font-variant-numeric: tabular-nums;
  letter-spacing: .02em;
}
.wa-dialog-opcion {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: .3rem;
  text-align: center;
}
.wa-dialog-opcion__titulo { line-height: 1.25; }
.wa-dialog-opcion__contacto {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  white-space: nowrap;
  flex-shrink: 0;
}

/* ---------- Pie ---------- */
.site-footer {
  background: var(--bg);
  border-top: 1px solid var(--line);
  padding: 3rem 0 2rem;
  font-size: .92rem;
  color: var(--muted);
}
.footer-grid {
  display: grid;
  gap: 2rem;
  grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
  margin-bottom: 2.25rem;
}
.site-footer h4 {
  font-size: .78rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--text);
  margin-bottom: .85rem;
}
.footer-list { list-style: none; margin: 0; padding: 0; }
.footer-list li { margin-bottom: .5rem; }
.footer-list a { color: var(--muted); text-decoration: none; }
.footer-list a:hover { color: var(--accent); }
.footer-bottom {
  border-top: 1px solid var(--line);
  padding-top: 1.4rem;
  display: flex;
  flex-wrap: wrap;
  gap: .75rem 1.5rem;
  justify-content: space-between;
  font-size: .84rem;
}

/* ---------- Utilidades ---------- */
.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}
.mt-2 { margin-top: 2rem; }
.center { text-align: center; }
.center .lede { margin-inline: auto; }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .nav-toggle { display: block; }
  .header-cta { display: none; }
  .nav {
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    background: var(--surface);
    border-bottom: 1px solid var(--line);
    display: none;
  }
  .nav.is-open { display: block; }
  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: .5rem 1.25rem 1rem;
  }
  .nav-list a { padding: .85rem .5rem; border-bottom: 1px solid var(--line); border-radius: 0; }
  .site-header { position: sticky; }
  .header-inner { position: relative; }
}

@media (max-width: 560px) {
  body { font-size: 16px; }
  .cta-band { flex-direction: column; align-items: flex-start; }
  .hero-actions .btn { width: 100%; justify-content: center; }
  .error-page__actions .btn { width: 100%; justify-content: center; }
  .brand-logo { width: clamp(88px, 27vw, 98px); }
}

/* ---------- Página 404 ---------- */
.error-page {
  min-height: max(76vh, 680px);
  display: grid;
  place-items: center;
  padding: clamp(2.5rem, 5vw, 4rem) 0;
  text-align: center;
  background:
    radial-gradient(ellipse at 50% 38%, rgba(255, 122, 26, .09), transparent 52%),
    var(--bg);
}
.error-page__content { max-width: 760px; }
.error-page__code {
  margin: 0 0 1rem;
  color: transparent;
  font-family: var(--font-display);
  font-size: clamp(5rem, 16vw, 9rem);
  font-weight: 800;
  letter-spacing: -.08em;
  line-height: .85;
  -webkit-text-stroke: 2px var(--line);
}
.error-page .lede { margin: 0 auto 2rem; }
.error-page h1 { font-size: clamp(2rem, 4vw, 3rem); }
.error-page__actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: .75rem;
}
.error-page__other { margin: 1.75rem 0 0; color: var(--muted); }
.error-page__other a { color: var(--accent); }

/* ---------- Movimiento reducido ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }
}

/* Inicio: servicios solicitados por el cliente (tres espacios sin imágenes) */
.section--services-dark { background: #08090b; color: #f5f5f5; }
.section--services-dark h2, .section--services-dark h3, .section--services-dark h4 { color: #f5f5f5; }
.section--services-dark .eyebrow { color: var(--accent); }
.service-showcase { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: clamp(1.5rem, 3vw, 3rem); }
.service-feature { min-width: 0; }
.service-feature__oval { width: min(100%, 230px); aspect-ratio: 1 / 1; margin: 0 auto 2rem; border: 1px solid rgba(230, 128, 64, .48); border-radius: 50%; background: #101114; overflow: hidden; background-size: cover; background-position: center; background-repeat: no-repeat; }
.service-feature__oval--laser { background-image: url('../img/img-ser/5-grabadoLaser.webp'); }
.service-feature__oval--erosionadora { background-image: url('../img/img-ser/3-erosionadora.webp'); }
.service-feature__oval--rectificado { background-image: url('../img/img-ser/2-rectificado.webp'); }
.service-feature__content { display: grid; grid-template-columns: auto minmax(0, 1fr); gap: .75rem; align-items: start; }
.service-feature__number { font-family: Archivo, sans-serif; font-weight: 800; font-size: clamp(2.5rem, 5vw, 4.5rem); line-height: 1; color: #b5b5b5; }
.service-feature h3 { font-size: clamp(1.2rem, 2vw, 1.6rem); line-height: 1.2; margin: .15rem 0 .9rem; }
.service-feature h4 { font-size: .95rem; margin: 1.2rem 0 .55rem; }
.service-feature p, .service-feature li { color: #d2d2d2; line-height: 1.65; }
.service-feature ul { padding-left: 1.2rem; margin: .5rem 0 0; }
.service-feature li + li { margin-top: .35rem; }
.direct-wa-contact h3 { margin-bottom: 1rem; }
.direct-wa-buttons { display: flex; flex-wrap: wrap; gap: .8rem; }
.direct-wa-button { flex-direction: column; justify-content: center; gap: .3rem; min-width: 175px; max-width: 220px; text-align: center; font-variant-numeric: tabular-nums; }
.direct-wa-button__title { line-height: 1.25; }
.direct-wa-button__contact { display: inline-flex; align-items: center; justify-content: center; white-space: nowrap; }
@media (max-width: 760px) { .service-showcase { grid-template-columns: 1fr; gap: 3.5rem; } .service-feature__oval { width: min(65vw, 225px); } }
@media (max-width: 560px) { .direct-wa-buttons { flex-direction: column; align-items: center; } .direct-wa-button { width: 100%; } }

/* Ajustes aprobados de experiencia y WhatsApp */
.experience-highlight { text-align:center; font-size:clamp(1.3rem, 3vw, 2.25rem); font-weight:700; line-height:1.35; max-width:900px; margin-inline:auto; }
.direct-wa-button:hover, .direct-wa-button:focus-visible { background:#25D366 !important; border-color:#25D366 !important; color:#092b16 !important; }
.wa-icon { display:inline-flex; align-items:center; justify-content:center; width:1.3em; height:1.3em; border:2px solid currentColor; border-radius:50%; font-size:1em; font-weight:900; }

/* WhatsApp: estilo coherente en todas las páginas y en el modal. */
a.wa-action:hover, a.wa-action:focus-visible,
.wa-dialog-opcion:hover, .wa-dialog-opcion:focus-visible {
 background-color:#25D366 !important; border-color:#25D366 !important; color:#073b20 !important;
}
.wa-brand-icon {width:1.15em;height:1.15em;display:inline-block;vertical-align:-.18em;flex-shrink:0;margin-right:.3em;}
.soldadura-materiales {display:grid;grid-template-columns:repeat(2,minmax(0,1fr));column-gap:1rem;row-gap:.3rem;font-size:.87em;line-height:1.4;padding-left:1.15rem;}
.soldadura-materiales li {min-width:0;}
@media(max-width:360px){.soldadura-materiales{font-size:.82em;column-gap:.6rem;}}

/* Misión, visión y valores: tarjetas alineadas y adaptables */
.company-principles {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(1rem, 2.5vw, 2rem);
  margin-top: clamp(2rem, 4vw, 3.5rem);
  align-items: stretch;
}
.principle-card {
  min-width: 0;
  background: #15191e;
  border: 1px solid rgba(255,255,255,.12);
  border-radius: 14px;
  padding: clamp(1.25rem, 2.5vw, 2rem);
  color: #e8ebef;
}
.principle-icon {
  display: grid;
  place-items: center;
  width: 3rem;
  height: 3rem;
  margin: 0 auto 1rem;
  color: #f5a04a;
}
.principle-icon svg {
  display: block;
  width: 100%;
  height: 100%;
}
.principle-card h3 {
  margin: 0 0 1rem;
  color: #f5a04a;
  font-size: clamp(1.3rem, 2vw, 1.75rem);
  text-align: center;
}
.principle-card p, .principle-card li {
  line-height: 1.65;
  overflow-wrap: break-word;
}
.principle-card ul { padding-left: 1.25rem; margin: 0; }
.principle-card li + li { margin-top: .4rem; }
@media (max-width: 800px) {
  .company-principles { grid-template-columns: 1fr; }
}