/* ============================================================
   Estructurando & Construcciones — styles.css
   Paleta: blanco cálido, hormigón, carbón y acento ocre.
   Mobile-first, sin frameworks ni dependencias.
   ============================================================ */

:root {
  /* Paleta */
  --bg: #f5f2ec;            /* blanco cálido / cemento claro */
  --bg-soft: #efeae1;
  --surface: #ffffff;
  --black: #0d0d0d;
  --carbon: #1a1a1a;
  --text: #161616;
  --muted: #5a554f;
  --line: rgba(20, 16, 12, 0.10);
  --line-strong: rgba(20, 16, 12, 0.18);
  --accent: #b08348;        /* ocre / dorado sobrio */
  --accent-dark: #8a6332;
  --whatsapp: #1f9d55;
  --whatsapp-dark: #137a42;

  /* Tokens */
  --shadow-sm: 0 4px 14px rgba(20, 16, 12, 0.06);
  --shadow-md: 0 12px 32px rgba(20, 16, 12, 0.10);
  --shadow-lg: 0 24px 60px rgba(20, 16, 12, 0.14);
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 22px;
  --radius-xl: 32px;

  --container: 1200px;
  --container-narrow: 960px;

  --transition: 0.34s cubic-bezier(0.2, 0.7, 0.2, 1);
  --header-h: 76px;

  --font-sans: "Montserrat", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

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

html,
body,
h1, h2, h3, h4, h5, h6,
p, ul, ol, figure, blockquote, dl, dd {
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 12px);
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  color: inherit;
  text-decoration: none;
}

button,
input,
textarea,
select {
  font: inherit;
  color: inherit;
}

button {
  cursor: pointer;
  background: none;
  border: none;
  touch-action: manipulation;
}

input,
textarea {
  -webkit-appearance: none;
          appearance: none;
}

ul {
  list-style: none;
}

::selection {
  background: var(--accent);
  color: #fff;
}

/* ---------- Layout ---------- */
.container {
  width: min(var(--container), calc(100% - 32px));
  margin-inline: auto;
}

.container-narrow {
  width: min(var(--container-narrow), calc(100% - 32px));
  margin-inline: auto;
}

.section {
  padding: 72px 0;
}

.section-tight {
  padding: 56px 0;
}

.section-heading {
  text-align: center;
  margin-bottom: 48px;
  max-width: 720px;
  margin-inline: auto;
}

.section-kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 14px;
}

.section-kicker::before {
  content: "";
  width: 24px;
  height: 1px;
  background: currentColor;
}

.kicker-light {
  color: rgba(255, 255, 255, 0.78);
}

.section-title {
  font-size: clamp(1.9rem, 3.6vw, 3rem);
  line-height: 1.08;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--carbon);
}

.section-title.left {
  text-align: left;
}

.section-lead {
  margin-top: 14px;
  font-size: 1.02rem;
  color: var(--muted);
  line-height: 1.7;
}

/* ---------- Botones ---------- */
.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 52px;
  padding: 0 26px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-size: 0.88rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  text-align: center;
  overflow: hidden;
  transition: transform 0.42s cubic-bezier(0.16, 1, 0.3, 1),
              background var(--transition),
              color var(--transition),
              border-color var(--transition),
              box-shadow 0.42s cubic-bezier(0.16, 1, 0.3, 1),
              opacity var(--transition);
  white-space: nowrap;
}

.btn i {
  font-size: 1.05em;
  transition: transform var(--transition), opacity var(--transition);
}

.btn:hover {
  transform: translateY(-1px);
}

.btn:active {
  transform: translateY(0);
}

.btn-primary {
  background: var(--carbon);
  color: #fff;
  border-color: var(--carbon);
  box-shadow: var(--shadow-md);
}

.btn-primary:hover {
  background: #000;
  box-shadow: var(--shadow-lg);
}

.btn-secondary {
  background: transparent;
  color: var(--carbon);
  border-color: var(--line-strong);
}

.btn-secondary:hover {
  background: var(--carbon);
  color: #fff;
  border-color: var(--carbon);
  box-shadow: var(--shadow-md);
}

.btn-light {
  background: #fff;
  color: var(--carbon);
  border-color: #fff;
  box-shadow: var(--shadow-md);
}

.btn-light:hover {
  background: var(--bg-soft);
  border-color: rgba(255, 255, 255, 0.72);
  box-shadow: var(--shadow-lg);
}

.btn-outline {
  background: transparent;
  color: var(--carbon);
  border-color: var(--line-strong);
}

.btn-outline:hover {
  background: var(--carbon);
  color: #fff;
  border-color: var(--carbon);
  box-shadow: var(--shadow-md);
}

.btn-whatsapp {
  background: var(--whatsapp);
  color: #fff;
  border-color: var(--whatsapp);
  box-shadow: 0 12px 26px rgba(31, 157, 85, 0.22);
}

.btn-whatsapp:hover {
  background: var(--whatsapp-dark);
  border-color: var(--whatsapp-dark);
  box-shadow: 0 15px 32px rgba(31, 157, 85, 0.28);
}

.btn-submit {
  background: var(--carbon);
  color: #fff;
  border-color: var(--carbon);
  width: 100%;
  margin-top: 6px;
}

.btn-submit:hover {
  background: #000;
  box-shadow: var(--shadow-md);
}

.btn:disabled,
.btn[disabled] {
  opacity: 0.65;
  cursor: progress;
  transform: none !important;
  pointer-events: none;
}

.btn-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--carbon);
  border-bottom: 1px solid currentColor;
  padding-bottom: 4px;
  transition: color var(--transition), gap var(--transition);
}

.btn-link:hover {
  color: var(--accent);
  gap: 12px;
}

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(245, 242, 236, 0.85);
  backdrop-filter: saturate(150%) blur(14px);
  -webkit-backdrop-filter: saturate(150%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: background var(--transition), border-color var(--transition), box-shadow var(--transition);
}

.site-header.scrolled {
  background: rgba(245, 242, 236, 0.96);
  border-bottom-color: var(--line);
  box-shadow: 0 8px 24px rgba(20, 16, 12, 0.06);
}

.header-inner {
  min-height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
  transition: opacity var(--transition);
}

.brand:hover {
  opacity: 0.85;
}

.brand-mark {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  overflow: hidden;
  background: #fff;
  box-shadow: var(--shadow-sm);
  flex-shrink: 0;
}

.brand-mark img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.05;
  min-width: 0;
}

.brand-text strong {
  font-size: 1rem;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--carbon);
}

.brand-text small {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--muted);
  text-transform: uppercase;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 30px;
  margin-left: auto;
}

.main-nav a {
  position: relative;
  font-size: 0.94rem;
  font-weight: 600;
  color: rgba(20, 16, 12, 0.78);
  padding: 6px 0;
  transition: color var(--transition), background var(--transition);
}

.main-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 100%;
  height: 2px;
  border-radius: 2px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.42s cubic-bezier(0.16, 1, 0.3, 1), opacity var(--transition);
  opacity: 0.9;
}

.main-nav a:hover,
.main-nav a.active {
  color: var(--carbon);
}

.main-nav a:hover::after,
.main-nav a.active::after {
  transform: scaleX(1);
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: var(--whatsapp);
  color: #fff !important;
  padding: 10px 14px 10px 18px !important;
  border-radius: 999px;
  font-size: 0.84rem !important;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  box-shadow: 0 10px 22px rgba(31, 157, 85, 0.2);
  transition: background var(--transition), transform 0.42s cubic-bezier(0.16, 1, 0.3, 1), box-shadow var(--transition);
}

.nav-cta::after {
  display: none !important;
}

.nav-cta:hover {
  background: var(--whatsapp-dark);
  transform: translateY(-1px);
  box-shadow: 0 13px 28px rgba(31, 157, 85, 0.28);
  color: #fff !important;
}

.nav-cta .fa-arrow-right {
  width: 20px;
  height: 20px;
  margin-left: 2px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.16);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.72em;
  line-height: 1;
  transition: transform var(--transition), background var(--transition);
}

.nav-cta:hover .fa-arrow-right {
  transform: translateX(2px);
  background: rgba(255, 255, 255, 0.22);
}

.menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: 1px solid var(--line-strong);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.6);
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
}

.menu-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--carbon);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}

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

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

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

/* ---------- Hero (home) ---------- */
.hero {
  position: relative;
  min-height: clamp(560px, 86vh, 820px);
  display: flex;
  align-items: center;
  justify-content: center;
  background: #2b2622 url("assets/icons/images/background-hero.png") center/cover no-repeat;
  overflow: hidden;
  isolation: isolate;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(13, 13, 13, 0.55) 0%, rgba(13, 13, 13, 0.72) 60%, rgba(13, 13, 13, 0.85) 100%),
    radial-gradient(120% 80% at 20% 0%, rgba(176, 131, 72, 0.18), transparent 60%);
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 84px 0 64px;
  max-width: 920px;
  color: #fff;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.86);
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.18);
  padding: 8px 16px;
  border-radius: 999px;
  margin-bottom: 22px;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.hero-eyebrow::before {
  content: "";
  width: 6px;
  height: 6px;
  background: var(--accent);
  border-radius: 50%;
  box-shadow: 0 0 0 4px rgba(176, 131, 72, 0.25);
}

.hero h1 {
  font-size: clamp(2.2rem, 5.2vw, 4.4rem);
  line-height: 1.04;
  font-weight: 800;
  letter-spacing: -0.025em;
  color: #fff;
  margin-bottom: 20px;
  text-wrap: balance;
}

.hero h1 .accent {
  color: var(--accent);
  font-style: italic;
  font-weight: 600;
}

.hero p {
  font-size: clamp(1rem, 1.2vw, 1.18rem);
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.84);
  max-width: 640px;
  margin: 0 auto 32px;
}

.hero-actions {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ---------- Page hero (proyectos) ---------- */
.page-hero {
  position: relative;
  padding: 96px 0 72px;
  background: var(--bg-soft) url("assets/icons/images/casa-gris-terminada.png") center/cover no-repeat;
  isolation: isolate;
  overflow: hidden;
}

.page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(13, 13, 13, 0.62), rgba(13, 13, 13, 0.78));
  z-index: 0;
}

.page-hero-inner {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 820px;
  margin: 0 auto;
  color: #fff;
}

.page-hero h1 {
  font-size: clamp(2rem, 4.4vw, 3.6rem);
  line-height: 1.08;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
  color: #fff;
}

.page-hero p {
  font-size: 1.05rem;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.82);
}

.breadcrumbs {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 0.82rem;
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 16px;
}

.breadcrumbs a {
  color: rgba(255, 255, 255, 0.85);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition);
}

.breadcrumbs a:hover {
  border-bottom-color: rgba(255, 255, 255, 0.6);
}

.breadcrumbs span {
  opacity: 0.6;
}

/* ---------- Trust bar ---------- */
.trust-bar {
  padding: 32px 0;
  background: var(--carbon);
  color: #fff;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.trust-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
  align-items: center;
}

.trust-item {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.92rem;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.92);
  line-height: 1.4;
}

.trust-item i {
  font-size: 1.1rem;
  color: var(--accent);
  flex-shrink: 0;
}

/* ---------- Servicios ---------- */
#servicios {
  background: var(--bg);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}

.service-card {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 36px 32px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition), background var(--transition);
  overflow: hidden;
  isolation: isolate;
}

.service-card::before {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), transparent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.6s cubic-bezier(0.2, 0.7, 0.2, 1);
  z-index: 1;
}

.service-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
  border-color: var(--line-strong);
}

.service-card:hover::before {
  transform: scaleX(1);
}

.service-icon {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  background: var(--bg-soft);
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  margin-bottom: 6px;
}

.service-number {
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.18em;
  color: var(--accent);
  text-transform: uppercase;
}

.service-card h3 {
  font-size: 1.4rem;
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.01em;
  color: var(--carbon);
}

.service-card p {
  color: var(--muted);
  font-size: 0.96rem;
  line-height: 1.7;
  margin-bottom: 6px;
}

.service-card .btn-link {
  margin-top: auto;
}

/* ---------- Proyectos preview ---------- */
.projects-preview {
  background: var(--bg-soft);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.preview-top {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}

.preview-top > div {
  max-width: 620px;
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}

.projects-grid-large {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 28px;
}

.project-card {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.project-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
  border-color: var(--line-strong);
}

.project-image {
  position: relative;
  width: 100%;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: var(--bg-soft);
}

.project-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  transition: transform 0.7s cubic-bezier(0.2, 0.7, 0.2, 1);
}

.project-card:hover .project-image img {
  transform: scale(1.04);
}

.project-tag,
.project-meta {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 10px;
}

.project-body {
  padding: 22px 22px 26px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.project-body h3,
.project-body h2 {
  font-size: 1.18rem;
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--carbon);
  margin-bottom: 8px;
}

.project-body p {
  color: var(--muted);
  font-size: 0.94rem;
  line-height: 1.65;
  margin-top: 4px;
}

.project-location {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.85rem;
  color: var(--muted);
  margin-top: 4px;
}

.project-location::before {
  content: "\f3c5";
  font-family: "Font Awesome 6 Free";
  font-weight: 900;
  color: var(--accent);
  font-size: 0.85em;
}

/* ---------- Stats ---------- */
.stats {
  background: var(--bg);
  padding: 64px 0;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--surface);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.stat-card {
  padding: 32px 24px;
  text-align: center;
  border-right: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  gap: 6px;
  transition: background var(--transition), transform 0.42s cubic-bezier(0.16, 1, 0.3, 1);
}

.stat-card:hover {
  background: rgba(176, 131, 72, 0.04);
  transform: translateY(-1px);
}

.stat-card:last-child {
  border-right: none;
}

.stat-card strong {
  display: inline-flex;
  align-items: baseline;
  justify-content: center;
  font-size: clamp(2rem, 3.8vw, 2.8rem);
  line-height: 1;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--carbon);
}

.stat-symbol {
  color: var(--accent);
  font-size: 0.9em;
  line-height: 1;
  margin-right: 3px;
  position: relative;
  top: -0.02em;
}

.stat-symbol-unit {
  font-size: 0.64em;
  margin-left: 5px;
  margin-right: 0;
  top: -0.16em;
  letter-spacing: 0;
}

.stat-card span {
  color: var(--muted);
  font-size: 0.86rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  line-height: 1.4;
}

/* ---------- Sobre nosotros ---------- */
#nosotros {
  background: var(--bg-soft);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.about-image {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  aspect-ratio: 4 / 5;
  box-shadow: var(--shadow-md);
}

.about-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.85s cubic-bezier(0.2, 0.7, 0.2, 1);
}

.about-image:hover img {
  transform: scale(1.035);
}

.about-text h2 {
  font-size: clamp(1.9rem, 3.4vw, 2.8rem);
  line-height: 1.1;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--carbon);
  margin-bottom: 20px;
}

.about-text p {
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.75;
  margin-bottom: 16px;
}

.about-text p:last-of-type {
  margin-bottom: 28px;
}

.about-features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 28px;
}

.about-feature {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 14px 16px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
}

.about-feature:hover {
  transform: translateY(-2px);
  border-color: var(--line-strong);
  box-shadow: var(--shadow-sm);
}

.about-feature i {
  color: var(--accent);
  font-size: 1.1rem;
  margin-top: 3px;
  flex-shrink: 0;
}

.about-feature strong {
  display: block;
  font-size: 0.94rem;
  font-weight: 700;
  color: var(--carbon);
  line-height: 1.3;
  margin-bottom: 2px;
}

.about-feature span {
  font-size: 0.82rem;
  color: var(--muted);
  line-height: 1.4;
}

/* ---------- Contacto ---------- */
.contact-wrapper {
  background: var(--bg);
}

.contact-intro {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 48px;
}

.contact-intro h2 {
  font-size: clamp(1.9rem, 3.4vw, 2.8rem);
  line-height: 1.1;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--carbon);
  margin-bottom: 14px;
}

.contact-intro p {
  color: var(--muted);
  font-size: 1.02rem;
  line-height: 1.7;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 24px;
  align-items: stretch;
}

.contact-form,
.contact-info {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.contact-form {
  padding: 32px;
}

.form-row {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.form-group {
  margin-bottom: 16px;
}

.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--carbon);
  letter-spacing: 0.02em;
}

.form-group input,
.form-group textarea {
  width: 100%;
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
  color: var(--text);
  font-size: 0.96rem;
  min-height: 50px;
  transition: border-color var(--transition), background var(--transition), box-shadow var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--accent);
  background: #fff;
  box-shadow: 0 0 0 4px rgba(176, 131, 72, 0.12);
  outline: none;
}

.form-group textarea {
  min-height: 160px;
  resize: vertical;
  font-family: inherit;
}

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

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: #999;
}

.form-note {
  font-size: 0.82rem;
  color: var(--muted);
  margin-top: 14px;
  line-height: 1.5;
  text-align: center;
}

.form-status {
  min-height: 1.4em;
  margin-top: 14px;
  font-size: 0.86rem;
  line-height: 1.5;
  text-align: center;
  color: var(--muted);
}

.form-status.is-loading {
  color: var(--muted);
}

.form-status.is-success {
  color: var(--whatsapp-dark);
  font-weight: 700;
}

.form-status.is-error {
  color: #9f2d20;
  font-weight: 700;
}

.form-note a {
  color: var(--accent);
  font-weight: 700;
  border-bottom: 1px solid currentColor;
  transition: color var(--transition), border-color var(--transition);
}

.form-note a:hover {
  color: var(--accent-dark);
}

.contact-info {
  padding: 30px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  justify-content: space-between;
}

.info-block {
  display: flex;
  align-items: center;
  gap: 15px;
  padding: 15px 14px;
  border: 1px solid transparent;
  border-radius: 14px;
  transition: background var(--transition), border-color var(--transition), box-shadow var(--transition);
}

.info-block:hover {
  background: rgba(176, 131, 72, 0.045);
  border-color: rgba(176, 131, 72, 0.12);
}

.info-block:last-child {
  border-bottom-color: transparent;
}

.info-icon {
  width: 46px;
  height: 46px;
  background: var(--bg-soft);
  color: var(--accent);
  border-radius: 14px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.05rem;
  flex-shrink: 0;
  box-shadow: inset 0 0 0 1px rgba(176, 131, 72, 0.08);
}

.info-text {
  flex: 1;
  min-width: 0;
}

.info-label {
  display: block;
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  color: var(--muted);
  margin-bottom: 3px;
  text-transform: uppercase;
}

.info-text p,
.info-text a {
  font-size: 0.98rem;
  color: var(--carbon);
  line-height: 1.45;
  word-break: break-word;
  font-weight: 600;
  transition: color var(--transition);
}

.info-text a:hover {
  color: var(--accent);
}

.info-actions {
  margin-top: 6px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.info-actions .btn {
  width: 100%;
  min-height: 50px;
  box-shadow: 0 10px 24px rgba(31, 157, 85, 0.2);
}

.info-actions .btn:hover {
  box-shadow: 0 13px 30px rgba(31, 157, 85, 0.27);
}

/* ---------- CTA bloque ---------- */
.cta-section {
  padding: 0 0 72px;
  background: var(--bg);
}

.cta-box {
  position: relative;
  border-radius: var(--radius-xl);
  padding: 56px 48px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  color: #fff;
  background: var(--carbon) url("assets/icons/images/obra-en-ejecucion.png") center/cover no-repeat;
  background-blend-mode: multiply;
  overflow: hidden;
  isolation: isolate;
  box-shadow: var(--shadow-lg);
}

.cta-box::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, rgba(13, 13, 13, 0.85) 0%, rgba(13, 13, 13, 0.55) 70%, rgba(13, 13, 13, 0.2) 100%);
  z-index: 0;
}

.cta-text,
.cta-action {
  position: relative;
  z-index: 1;
}

.cta-text {
  max-width: 640px;
}

.cta-text h2 {
  font-size: clamp(1.7rem, 3vw, 2.4rem);
  line-height: 1.15;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
  color: #fff;
}

.cta-text p {
  color: rgba(255, 255, 255, 0.82);
  line-height: 1.65;
}

.cta-action {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  flex-shrink: 0;
}

.btn-secondary-quiet {
  color: rgba(20, 16, 12, 0.74);
  box-shadow: 0 8px 20px rgba(20, 16, 12, 0.08);
}

.btn-secondary-quiet:hover {
  color: var(--carbon);
  transform: translateY(-1px);
  box-shadow: 0 12px 28px rgba(20, 16, 12, 0.12);
}

/* ---------- Marquee ---------- */
.marquee-section {
  overflow: hidden;
  padding: 18px 0;
  background: var(--carbon);
  color: #fff;
}

.marquee-track {
  display: flex;
  gap: 36px;
  width: max-content;
  animation: marquee 30s linear infinite;
  will-change: transform;
}

.marquee-track span {
  font-size: 0.9rem;
  letter-spacing: 0.24em;
  font-weight: 700;
  white-space: nowrap;
  color: rgba(255, 255, 255, 0.78);
}

.marquee-track span::after {
  content: "•";
  margin-left: 36px;
  color: var(--accent);
}

@keyframes marquee {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

/* ---------- Footer ---------- */
.site-footer {
  background: #0a0a0a;
  color: rgba(255, 255, 255, 0.78);
  padding: 56px 0 32px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 36px;
  padding-bottom: 32px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-col h4 {
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: #fff;
  margin-bottom: 18px;
}

.footer-col p,
.footer-col a {
  font-size: 0.92rem;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.7);
}

.footer-col a {
  display: inline-block;
  transition: color var(--transition), transform var(--transition);
}

.footer-col a:hover {
  color: var(--accent);
  transform: translateX(2px);
}

.footer-col ul li {
  margin-bottom: 8px;
}

.footer-brand {
  margin-bottom: 16px;
}

.footer-brand .brand-mark {
  background: rgba(255, 255, 255, 0.04);
}

.footer-brand .brand-text strong,
.footer-brand .brand-text small {
  color: #fff;
}

.footer-brand .brand-text small {
  color: rgba(255, 255, 255, 0.55);
}

.footer-tagline {
  font-size: 0.92rem;
  color: rgba(255, 255, 255, 0.65);
  line-height: 1.65;
  max-width: 320px;
  margin-bottom: 18px;
}

.footer-social {
  display: flex;
  gap: 10px;
}

.footer-social a {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.06);
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
  font-size: 0.95rem;
}

.footer-social a:hover {
  background: var(--accent);
  transform: translateY(-2px);
  box-shadow: 0 10px 22px rgba(176, 131, 72, 0.22);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 0.84rem;
  color: rgba(255, 255, 255, 0.5);
}

/* ---------- WhatsApp flotante ---------- */
.whatsapp-float {
  position: fixed;
  right: 22px;
  bottom: 22px;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: var(--whatsapp);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.7rem;
  box-shadow: 0 12px 28px rgba(31, 157, 85, 0.3);
  z-index: 1001;
  transition: transform 0.42s cubic-bezier(0.16, 1, 0.3, 1), box-shadow var(--transition);
}

.whatsapp-float::before {
  content: "";
  position: absolute;
  inset: -4px;
  border-radius: 50%;
  background: var(--whatsapp);
  opacity: 0.45;
  z-index: -1;
  animation: pulseWa 2.4s ease-out infinite;
}

@keyframes pulseWa {
  0% { transform: scale(1); opacity: 0.45; }
  100% { transform: scale(1.6); opacity: 0; }
}

.whatsapp-float:hover {
  transform: translateY(-1px) scale(1.02);
  box-shadow: 0 16px 34px rgba(31, 157, 85, 0.36);
}

/* ---------- Reveal ---------- */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

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

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

.btn:focus-visible {
  outline-offset: 4px;
}

/* ============================================================
   Tablet
   ============================================================ */
@media (min-width: 769px) and (max-width: 1024px) {
  .container {
    width: min(var(--container), calc(100% - 40px));
  }

  .section {
    padding: 64px 0;
  }

  .main-nav {
    gap: 22px;
  }

  .main-nav a {
    font-size: 0.9rem;
  }

  .projects-grid,
  .projects-grid-large {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .trust-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 18px;
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .stat-card:nth-child(2) {
    border-right: none;
  }

  .stat-card:nth-child(1),
  .stat-card:nth-child(2) {
    border-bottom: 1px solid var(--line);
  }

  .about-grid {
    gap: 36px;
  }

  .about-image {
    aspect-ratio: 1 / 1;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

/* ============================================================
   Mobile
   ============================================================ */
@media (max-width: 768px) {
  html {
    scroll-padding-top: 80px;
  }

  .container {
    width: min(var(--container), calc(100% - 28px));
  }

  .section {
    padding: 56px 0;
  }

  .section-tight {
    padding: 40px 0;
  }

  .section-heading {
    margin-bottom: 32px;
  }

  /* Header */
  .menu-toggle {
    display: flex;
    flex-shrink: 0;
  }

  .main-nav {
    position: absolute;
    top: calc(100% + 1px);
    left: 14px;
    right: 14px;
    background: rgba(245, 242, 236, 0.98);
    backdrop-filter: blur(14px);
    border: 1px solid var(--line);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    padding: 14px;
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    max-height: calc(100vh - 100px);
    overflow-y: auto;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: opacity var(--transition), visibility var(--transition), transform var(--transition);
  }

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

  .main-nav a {
    padding: 14px 14px;
    border-radius: 10px;
    font-size: 1rem;
  }

  .main-nav a:hover,
  .main-nav a.active {
    background: rgba(20, 16, 12, 0.06);
  }

  .main-nav .nav-cta {
    display: inline-flex;
    width: 100%;
    margin-top: 8px;
    padding: 14px 16px !important;
    border-radius: 12px;
  }

  .main-nav .nav-cta:hover {
    background: var(--whatsapp-dark);
    transform: translateY(-1px);
  }

  .main-nav a::after {
    display: none;
  }

  .header-inner {
    min-height: 68px;
    gap: 12px;
  }

  .brand-mark {
    width: 42px;
    height: 42px;
  }

  /* Hero */
  .hero {
    min-height: clamp(540px, 78vh, 720px);
  }

  .hero-content {
    padding: 64px 0 80px;
  }

  .hero h1 {
    font-size: clamp(1.85rem, 8vw, 2.6rem);
  }

  .hero p {
    font-size: 0.98rem;
    margin-bottom: 26px;
  }

  .hero-actions {
    flex-direction: column;
    width: 100%;
    align-items: stretch;
  }

  .hero-actions .btn {
    width: 100%;
  }

  /* Trust bar */
  .trust-grid {
    grid-template-columns: 1fr 1fr;
    gap: 16px;
  }

  .trust-item {
    font-size: 0.84rem;
  }

  /* Servicios */
  .services-grid {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .service-card {
    padding: 26px 22px;
  }

  .service-card h3 {
    font-size: 1.22rem;
  }

  /* Proyectos */
  .preview-top {
    flex-direction: column;
    align-items: flex-start;
    margin-bottom: 26px;
    gap: 14px;
  }

  .preview-top .btn-outline {
    width: 100%;
  }

  .projects-grid,
  .projects-grid-large {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .project-image {
    aspect-ratio: 16 / 11;
  }

  .project-body {
    padding: 18px 18px 22px;
  }

  /* Stats */
  .stats {
    padding: 48px 0;
  }

  .stats-grid {
    grid-template-columns: 1fr 1fr;
  }

  .stat-card {
    padding: 22px 14px;
    border-right: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
  }

  .stat-card:nth-child(2n) {
    border-right: none;
  }

  .stat-card:nth-child(3),
  .stat-card:nth-child(4) {
    border-bottom: none;
  }

  /* Sobre nosotros */
  .about-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .about-image {
    aspect-ratio: 16 / 12;
    max-height: 420px;
  }

  .about-features {
    grid-template-columns: 1fr;
  }

  /* Contacto */
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .contact-form,
  .contact-info {
    padding: 22px;
  }

  .contact-info {
    gap: 8px;
  }

  .info-block {
    padding: 13px 10px;
    gap: 12px;
  }

  .info-icon {
    width: 42px;
    height: 42px;
    border-radius: 12px;
    font-size: 0.98rem;
  }

  .form-row {
    grid-template-columns: 1fr;
    gap: 0;
  }

  /* CTA */
  .cta-section {
    padding-bottom: 56px;
  }

  .cta-box {
    flex-direction: column;
    align-items: flex-start;
    padding: 36px 26px;
    gap: 22px;
  }

  .cta-action {
    width: 100%;
  }

  .cta-action .btn {
    width: 100%;
  }

  /* Page hero */
  .page-hero {
    padding: 64px 0 48px;
  }

  /* Footer */
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
    text-align: center;
  }

  .footer-brand,
  .footer-social {
    justify-content: center;
  }

  .footer-tagline {
    margin-inline: auto;
  }

  .footer-bottom {
    justify-content: center;
    text-align: center;
  }

  /* WhatsApp */
  .whatsapp-float {
    width: 54px;
    height: 54px;
    font-size: 1.5rem;
    right: 14px;
    bottom: 14px;
  }
}

/* ============================================================
   Reduced motion
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }

  .marquee-track,
  .whatsapp-float::before {
    animation: none;
  }

  .whatsapp-float::before {
    display: none;
  }
}