/* ========================================
   Knivel Construcciones — estilos
   Mobile-first, sin frameworks, sin CDNs
======================================== */

/* ---- Tipografías auto-hosteadas (Sora / Inter, subset latin) ---- */
@font-face {
  font-family: "Sora";
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url("../assets/fonts/sora-latin.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+2000-206F, U+20AC, U+2122;
}

@font-face {
  font-family: "Sora";
  font-style: normal;
  font-weight: 800;
  font-display: swap;
  src: url("../assets/fonts/sora-latin.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+2000-206F, U+20AC, U+2122;
}

@font-face {
  font-family: "Inter";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("../assets/fonts/inter-latin.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+2000-206F, U+20AC, U+2122;
}

@font-face {
  font-family: "Inter";
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url("../assets/fonts/inter-latin.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+2000-206F, U+20AC, U+2122;
}

/* ---- Design tokens ---- */
:root {
  --ink: #171C24;
  --ink-soft: #232A35;
  --bg: #F7F7F5;
  --surface: #FFFFFF;
  --accent: #F2A33C;
  --accent-dark: #d88f2c;
  --text: #2A313C;
  --text-muted: #5A6472;
  --text-on-ink: #EDEFF2;
  --text-on-ink-muted: #AEB5C0;
  --border: #E3E2DD;
  --border-on-ink: rgba(255, 255, 255, 0.12);
  --radius: 14px;
  --radius-sm: 10px;
  --radius-pill: 999px;
  --shadow-sm: 0 2px 10px rgba(23, 28, 36, 0.06);
  --shadow-md: 0 16px 40px rgba(23, 28, 36, 0.14);
  --container-max: 1120px;
  --font-heading: "Sora", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
  --font-body: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --transition: 180ms ease;
}

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

html {
  font-size: 100%;
}

@media (prefers-reduced-motion: no-preference) {
  html {
    scroll-behavior: smooth;
  }
}

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--text);
  background-color: var(--bg);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

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

h1, h2, h3 {
  font-family: var(--font-heading);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.12;
  margin: 0 0 0.6em;
  color: var(--ink);
}

h3 {
  font-size: 1.15rem;
}

p {
  margin: 0 0 1em;
}

a {
  color: inherit;
}

ul {
  margin: 0;
}

.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ---- Skip link ---- */
.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--accent);
  color: var(--ink);
  font-weight: 600;
  padding: 0.85rem 1.25rem;
  z-index: 1000;
  border-radius: 0 0 var(--radius-sm) 0;
}

.skip-link:focus {
  left: 0;
}

/* ---- Focus visible global ---- */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 2px;
}

/* ---- Secciones ---- */
section {
  padding: clamp(4rem, 10vw, 7rem) 0;
  scroll-margin-top: 84px;
}

main > section:target,
#inicio {
  scroll-margin-top: 84px;
}

.section-head {
  max-width: 640px;
  margin: 0 0 3rem;
}

.section-head h2 {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
}

.section-lead {
  max-width: 60ch;
  color: var(--text-muted);
  font-size: 1.05rem;
  margin: 0;
}

.eyebrow {
  display: inline-block;
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 0.8rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent-dark);
  margin: 0 0 0.75rem;
}

.eyebrow-light {
  color: var(--accent);
}

/* ---- Reveal on scroll (progressive enhancement) ----
   El estado oculto solo se activa si JS corrió (clase "js" en <html>,
   agregada por main.js) Y el usuario no pidió movimiento reducido.
   Sin JS, o con prefers-reduced-motion: reduce, todo es visible desde el inicio. */
@media (prefers-reduced-motion: no-preference) {
  html.js .reveal {
    opacity: 0;
    transform: translateY(16px);
    transition: opacity 520ms ease, transform 520ms ease;
  }

  html.js .reveal.visible {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ========================================
   Header
======================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: transparent;
  border-bottom: 1px solid transparent;
  transition: background-color 200ms ease, box-shadow 200ms ease, border-color 200ms ease;
}

.site-header.scrolled {
  background-color: var(--ink);
  border-bottom-color: rgba(255, 255, 255, 0.06);
  box-shadow: var(--shadow-sm);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
  padding-top: 1rem;
  padding-bottom: 1rem;
}

.logo {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.25rem;
  letter-spacing: -0.01em;
  color: var(--text-on-ink);
  text-decoration: none;
  text-shadow: 0 1px 6px rgba(0, 0, 0, 0.4);
}

.logo-dot {
  color: var(--accent);
}

.nav-toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  background: transparent;
  border: 1px solid var(--border-on-ink);
  border-radius: var(--radius-sm);
  cursor: pointer;
  z-index: 210;
  position: relative;
}

.nav-toggle-bar {
  display: block;
  width: 20px;
  height: 2px;
  background-color: var(--text-on-ink);
  transition: transform var(--transition), opacity var(--transition);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.nav-menu {
  position: fixed;
  inset: 0;
  top: 0;
  background-color: var(--ink);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2rem;
  transform: translateY(-8px);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition), transform var(--transition), visibility var(--transition);
  z-index: 200;
}

.nav-menu.open {
  opacity: 1;
  transform: translateY(0);
  visibility: visible;
}

.nav-menu ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
}

.nav-menu a {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 1.75rem;
  color: var(--text-on-ink);
  text-decoration: none;
  padding: 0.25rem 0;
}

.nav-menu a:hover,
.nav-menu a:focus-visible {
  color: var(--accent);
}

.nav-cta {
  display: none;
}

@media (min-width: 768px) {
  .nav-toggle {
    display: none;
  }

  .nav-menu {
    position: static;
    inset: auto;
    background: transparent;
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: 2.5rem;
    opacity: 1;
    transform: none;
    visibility: visible;
    transition: none;
  }

  .nav-menu ul {
    flex-direction: row;
    gap: 2rem;
  }

  .nav-menu a {
    font-size: 0.95rem;
    font-weight: 500;
    font-family: var(--font-body);
    text-shadow: 0 1px 6px rgba(0, 0, 0, 0.4);
    position: relative;
  }

  a.nav-cta {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.55rem 1.4rem;
    border-radius: var(--radius-pill);
    font-family: var(--font-body);
    font-size: 0.95rem;
    font-weight: 600;
    line-height: 1;
    white-space: nowrap;
    flex-shrink: 0;
    background-color: var(--accent);
    color: var(--ink);
    text-decoration: none;
    text-shadow: none;
    box-shadow: none;
  }

  a.nav-cta:hover {
    background-color: var(--accent-dark);
  }
}

@media (min-width: 768px) and (prefers-reduced-motion: no-preference) {
  .nav-menu ul a::after {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    bottom: -0.3rem;
    height: 2px;
    background-color: var(--accent);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 180ms ease;
  }

  .nav-menu ul a:hover::after,
  .nav-menu ul a:focus-visible::after {
    transform: scaleX(1);
  }
}

/* ========================================
   Buttons
======================================== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.85rem 1.75rem;
  border-radius: var(--radius-sm);
  text-decoration: none;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background-color var(--transition), color var(--transition), border-color var(--transition), transform var(--transition), box-shadow var(--transition);
}

.btn-pill {
  border-radius: var(--radius-pill);
}

.btn-primary {
  background-color: var(--accent);
  color: var(--ink);
  box-shadow: var(--shadow-sm);
}

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

@media (prefers-reduced-motion: no-preference) {
  .btn:hover {
    transform: translateY(-2px);
  }

  .btn:active {
    transform: scale(0.98);
    box-shadow: none;
  }
}

.btn-ghost {
  background-color: transparent;
  color: var(--text-on-ink);
  border-color: var(--border-on-ink);
}

.btn-ghost:hover {
  background-color: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.3);
}

.btn-block {
  display: flex;
  width: 100%;
  justify-content: center;
}

/* ========================================
   Hero
======================================== */
.hero {
  position: relative;
  min-height: 92vh;
  display: flex;
  align-items: center;
  background-color: var(--ink);
  color: var(--text-on-ink);
  overflow: hidden;
  padding-top: 6rem;
  padding-bottom: 3rem;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  background-image:
    linear-gradient(170deg, rgba(23, 28, 36, 0.9) 0%, rgba(23, 28, 36, 0.84) 55%, rgba(23, 28, 36, 0.76) 100%),
    radial-gradient(circle at 85% 15%, rgba(242, 163, 60, 0.16), transparent 55%),
    url("../assets/img/hero-mobile.webp");
  background-size: cover, 100% 100%, cover;
  /* El recorte (quincho terminado, foto diurna) ya está encuadrado al foco visual
     (parrilla + mesa + luminarias), así que no requiere desplazamiento vertical. */
  background-position: center, center, center;
  background-repeat: no-repeat;
}

@media (min-width: 768px) {
  .hero-bg {
    /* Overlay direccional: foto diurna y luminosa, por lo que se baja la densidad
       general y se concentra lo oscuro detrás del bloque de texto (izquierda),
       dejando que la foto respire hacia la derecha. Peor caso de contraste
       calculado contra el punto más claro de la foto (brillo ~blanco puro en un
       reflejo de piso): hasta ~42% del ancho el subtítulo (--text-on-ink-muted)
       mantiene ~4.4:1 (AA) y el h1/acento (texto grande) supera holgadamente 3:1;
       más allá de ese punto la foto se aclara a propósito. Reforzado con
       text-shadow más denso en h1/subtítulo como respaldo adicional. */
    background-image:
      linear-gradient(100deg, rgba(23, 28, 36, 0.9) 0%, rgba(23, 28, 36, 0.8) 42%, rgba(23, 28, 36, 0.55) 70%, rgba(23, 28, 36, 0.28) 100%),
      radial-gradient(circle at 85% 15%, rgba(242, 163, 60, 0.16), transparent 55%),
      url("../assets/img/hero.webp");
    background-size: cover, 100% 100%, cover;
    background-position: center, center, center;
  }
}

.hero-inner {
  position: relative;
  z-index: 1;
}

.hero h1 {
  font-size: clamp(2.2rem, 6vw, 4rem);
  color: var(--text-on-ink);
  max-width: 16ch;
  margin-bottom: 0.5em;
  text-shadow: 0 1px 3px rgba(0, 0, 0, 0.9), 0 2px 20px rgba(0, 0, 0, 0.55);
}

.hero h1 .accent {
  color: var(--accent);
}

.hero-subtitle {
  max-width: 50ch;
  font-size: 1.1rem;
  color: var(--text-on-ink-muted);
  margin-bottom: 2rem;
  text-shadow: 0 1px 3px rgba(0, 0, 0, 0.85), 0 2px 16px rgba(0, 0, 0, 0.55);
}

.hero-ctas {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 3.5rem;
}

.hero-metrics {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 1.5rem 2rem;
  max-width: 640px;
  padding-top: 2.5rem;
  border-top: 1px solid var(--border-on-ink);
}

.metric {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  padding-left: 1.25rem;
  border-left: 1px solid rgba(255, 255, 255, 0.15);
}

.metric:first-child {
  padding-left: 0;
  border-left: none;
}

@media (max-width: 480px) {
  .hero-metrics {
    grid-template-columns: 1fr;
  }

  .metric {
    padding-left: 0;
    border-left: none;
  }
}

.metric-number {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: clamp(1.7rem, 4vw, 2.3rem);
  color: var(--text-on-ink);
}

/* Variante para claims de texto sin cifras (ver hero-metrics): tipografía
   más contenida que los números grandes, pero misma familia/peso. */
.metric-number-text {
  font-weight: 600;
  font-size: clamp(1.05rem, 2.2vw, 1.3rem);
  line-height: 1.3;
}

.metric-plus {
  color: var(--accent);
}

.metric-label {
  font-size: 0.85rem;
  color: var(--text-on-ink-muted);
}

/* ========================================
   Grid genérico
======================================== */
.grid {
  display: grid;
  gap: 1.5rem;
}

.grid-servicios {
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.grid-proyectos {
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

/* ========================================
   Servicios
======================================== */
.servicios {
  background-color: var(--bg);
}

.card {
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem 1.75rem;
  transition: transform var(--transition), box-shadow var(--transition);
}

@media (prefers-reduced-motion: no-preference) {
  .card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
  }
}

.card-icon {
  color: var(--accent);
  margin-bottom: 1.1rem;
}

.card h3 {
  margin-bottom: 0.5rem;
}

.card p {
  color: var(--text-muted);
  margin: 0;
  font-size: 0.95rem;
}

/* ========================================
   Proyectos
======================================== */
.proyectos {
  background-color: var(--bg);
}

.proyecto-foto {
  aspect-ratio: 4 / 3;
  width: 100%;
  border-radius: var(--radius);
  overflow: hidden;
}

.proyecto-foto img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

@media (prefers-reduced-motion: no-preference) {
  .proyecto-foto img {
    transition: transform 320ms ease;
  }

  .proyecto-item:hover .proyecto-foto img {
    transform: scale(1.03);
  }
}

.proyecto-item figcaption {
  margin-top: 0.85rem;
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.proyecto-nombre {
  font-family: var(--font-heading);
  font-weight: 600;
  color: var(--ink);
}

.proyecto-meta {
  font-size: 0.88rem;
  color: var(--text-muted);
}

/* ========================================
   Nosotros
======================================== */
.nosotros {
  background-color: var(--surface);
}

.nosotros-grid {
  display: grid;
  gap: 2.5rem;
  align-items: center;
}

.nosotros-texto p {
  max-width: 60ch;
  color: var(--text-muted);
}

.check-list {
  list-style: none;
  padding: 0;
  margin-top: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.check-list li {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 600;
  color: var(--ink);
}

.check-icon {
  color: var(--accent);
  flex-shrink: 0;
}

.nosotros-foto {
  aspect-ratio: 4 / 3;
  width: 100%;
  border-radius: var(--radius);
  overflow: hidden;
}

.nosotros-foto img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

@media (min-width: 1080px) {
  .nosotros-grid {
    grid-template-columns: 1.1fr 0.9fr;
    gap: 4rem;
  }
}

/* ========================================
   Contacto
======================================== */
.contacto {
  background-color: var(--bg);
  padding-bottom: calc(clamp(4rem, 10vw, 7rem) + 72px);
}

.contacto-grid {
  display: grid;
  gap: 2.5rem;
}

.contacto-info {
  background-color: var(--ink);
  color: var(--text-on-ink);
  border-radius: var(--radius);
  padding: clamp(2rem, 5vw, 3rem);
}

.contacto-info h2 {
  color: var(--text-on-ink);
}

.contacto-info-sub {
  color: var(--text-on-ink-muted);
}

.contacto-links {
  display: flex;
  flex-direction: column;
  gap: 1.1rem;
  margin: 1.75rem 0;
}

.contacto-link {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--text-on-ink);
  text-decoration: none;
  font-weight: 600;
  font-size: 1.05rem;
  border-bottom: 1px solid transparent;
  width: fit-content;
}

.contacto-link svg {
  color: var(--accent);
  flex-shrink: 0;
}

.contacto-link:hover,
.contacto-link:focus-visible {
  border-color: var(--accent);
}

.contacto-cobertura {
  color: var(--text-on-ink-muted);
  font-size: 0.9rem;
  margin: 0;
}

.contact-form {
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: clamp(1.5rem, 4vw, 2.5rem);
}

.form-group {
  margin-bottom: 1.4rem;
}

.form-group label {
  display: block;
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 0.4rem;
  color: var(--ink);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 0.75rem 0.9rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background-color: var(--surface);
  font-family: inherit;
  font-size: 1rem;
  color: var(--text);
  transition: border-color var(--transition);
}

.form-group input:focus-visible,
.form-group textarea:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 1px;
  border-color: var(--accent);
}

.honeypot-field {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

@media (min-width: 1080px) {
  .contacto-grid {
    grid-template-columns: 0.9fr 1.1fr;
    gap: 3rem;
    align-items: start;
  }
}

/* ========================================
   Footer
======================================== */
.site-footer {
  background-color: var(--ink);
  color: var(--text-on-ink-muted);
  padding: 3rem 0;
  font-size: 0.9rem;
}

.footer-inner {
  display: grid;
  gap: 2rem;
}

.logo-footer {
  font-size: 1.25rem;
  color: var(--text-on-ink);
  margin-bottom: 0.5rem;
}

.footer-brand p {
  margin: 0.3rem 0;
}

.footer-contacto a {
  text-decoration: none;
  color: var(--text-on-ink-muted);
}

.footer-contacto a:hover,
.footer-contacto a:focus-visible {
  color: var(--accent);
}

.footer-contacto p {
  margin: 0.3rem 0;
}

.footer-nav ul {
  list-style: none;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
}

.footer-nav a {
  text-decoration: none;
  color: var(--text-on-ink-muted);
}

.footer-nav a:hover,
.footer-nav a:focus-visible {
  color: var(--accent);
}

@media (min-width: 768px) {
  .footer-inner {
    grid-template-columns: 1.2fr 1fr 1fr;
    align-items: start;
  }
}

/* ========================================
   WhatsApp flotante
======================================== */
.whatsapp-float {
  position: fixed;
  right: 1.25rem;
  bottom: 1.25rem;
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background-color: #25D366;
  box-shadow: var(--shadow-md);
  z-index: 150;
  transition: transform var(--transition);
}

@media (prefers-reduced-motion: no-preference) {
  .whatsapp-float:hover {
    transform: scale(1.08);
  }
}

@media (max-width: 767px) {
  .whatsapp-float {
    right: 1rem;
    bottom: 1rem;
  }
}