/* ==========================================================================
   AUREA Proyectos Profesionales — Frontend CSS Principal
   Paleta: Navy #0C253D | Gold #B88A3F | Tipografía: Montserrat
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Montserrat:wght@300;400;500;600;700;800&display=swap');

/* ─── Design Tokens ─────────────────────────────────────────────────────── */
:root {
  --navy:         #0C253D;
  --navy-light:   #14375A;
  --navy-dark:    #081A2B;
  --gold:         #B88A3F;
  --gold-light:   #D4A85A;
  --gold-dark:    #8E6A2F;
  --white:        #FFFFFF;
  --off-white:    #F8F7F4;
  --gray-100:     #F4F5F6;
  --gray-200:     #E8EAED;
  --gray-400:     #9EA3AA;
  --gray-600:     #5A6170;
  --gray-800:     #2D3748;
  --text-dark:    #1A2332;
  --text-medium:  #4A5568;
  --text-light:   #718096;
  --whatsapp:     #25D366;

  --font-base:    'Montserrat', sans-serif;
  --fw-light:     300;
  --fw-regular:   400;
  --fw-medium:    500;
  --fw-semibold:  600;
  --fw-bold:      700;
  --fw-extrabold: 800;

  --radius-sm:    4px;
  --radius-md:    8px;
  --radius-lg:    16px;
  --radius-xl:    24px;
  --radius-full:  999px;

  --shadow-sm:    0 1px 3px rgba(12,37,61,.08), 0 1px 2px rgba(12,37,61,.06);
  --shadow-md:    0 4px 16px rgba(12,37,61,.12), 0 2px 6px rgba(12,37,61,.08);
  --shadow-lg:    0 10px 40px rgba(12,37,61,.16), 0 4px 12px rgba(12,37,61,.10);
  --shadow-gold:  0 4px 20px rgba(184,138,63,.30);
  --shadow-glow:  0 0 30px rgba(184,138,63,.20);

  --transition:   0.25s ease;
  --transition-slow: 0.4s ease;

  --nav-h:        72px;
  --max-w:        1240px;
  --section-py:   96px;
}

/* ─── Reset ─────────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
body {
  font-family: var(--font-base);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text-dark);
  background: var(--white);
  padding-top: var(--nav-h);
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button, input, select, textarea { font-family: inherit; }
button { cursor: pointer; border: none; background: none; }

/* ─── Container ─────────────────────────────────────────────────────────── */
.container {
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
}
.container-sm { max-width: 840px; }
.container-xs { max-width: 640px; }

/* ─── Typography ────────────────────────────────────────────────────────── */
h1, h2, h3, h4, h5 {
  font-weight: var(--fw-bold);
  line-height: 1.15;
  color: var(--navy);
  letter-spacing: -0.02em;
}
h1 { font-size: clamp(2rem, 4.5vw, 3.5rem); }
h2 { font-size: clamp(1.6rem, 3vw, 2.5rem); }
h3 { font-size: clamp(1.2rem, 2vw, 1.75rem); }
h4 { font-size: 1.125rem; }
p  { color: var(--text-medium); line-height: 1.7; }

.text-gold { color: var(--gold); }
.text-navy { color: var(--navy); }
.text-white { color: var(--white); }
.text-center { text-align: center; }
.text-sm { font-size: .875rem; }
.text-xs { font-size: .75rem; }
.font-semibold { font-weight: var(--fw-semibold); }
.font-bold { font-weight: var(--fw-bold); }

/* ─── Buttons ───────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: var(--radius-full);
  font-weight: var(--fw-semibold);
  font-size: .9375rem;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
  white-space: nowrap;
}
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }

.btn-primary {
  background: var(--gold);
  color: var(--white);
  box-shadow: var(--shadow-gold);
}
.btn-primary:hover {
  background: var(--gold-light);
  box-shadow: 0 8px 28px rgba(184,138,63,.45);
}

.btn-navy {
  background: var(--navy);
  color: var(--white);
  box-shadow: var(--shadow-md);
}
.btn-navy:hover { background: var(--navy-light); }

.btn-outline {
  border: 2px solid var(--gold);
  color: var(--gold);
  background: transparent;
}
.btn-outline:hover { background: var(--gold); color: var(--white); }

.btn-outline-white {
  border: 2px solid rgba(255,255,255,.7);
  color: var(--white);
  background: transparent;
}
.btn-outline-white:hover { background: rgba(255,255,255,.1); border-color: var(--white); }

.btn-whatsapp {
  background: var(--whatsapp);
  color: var(--white);
  box-shadow: 0 4px 20px rgba(37,211,102,.35);
}
.btn-whatsapp:hover {
  background: #20ba5a;
  box-shadow: 0 8px 28px rgba(37,211,102,.45);
}

.btn-sm { padding: 10px 20px; font-size: .875rem; }
.btn-lg { padding: 18px 36px; font-size: 1rem; }

/* WhatsApp flotante */
.wa-float {
  position: fixed;
  bottom: 28px;
  right: 28px;
  z-index: 900;
  width: 56px;
  height: 56px;
  background: var(--whatsapp);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 20px rgba(37,211,102,.45);
  transition: transform var(--transition), box-shadow var(--transition);
}
.wa-float:hover { transform: scale(1.1); box-shadow: 0 8px 30px rgba(37,211,102,.55); }
.wa-float svg { width: 28px; height: 28px; fill: white; }

/* ─── Navigation ────────────────────────────────────────────────────────── */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  height: var(--nav-h);
  background: rgba(12,37,61,.97);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(184,138,63,.15);
  transition: background var(--transition), box-shadow var(--transition);
}
.navbar.scrolled {
  background: rgba(8,26,43,.98);
  box-shadow: 0 2px 20px rgba(0,0,0,.25);
}
.navbar-inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.navbar-logo img, .navbar-logo svg { height: 40px; width: auto; }
.navbar-logo path.fil0,
.navbar-logo path.fil1 { fill: var(--white) !important; }
.navbar-logo path.fil2,
.navbar-logo path.fil3,
.navbar-logo polygon.fil2,
.navbar-logo text.fil3 { fill: var(--gold) !important; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
}
.nav-links a {
  padding: 8px 14px;
  border-radius: var(--radius-md);
  font-size: .9rem;
  font-weight: var(--fw-medium);
  color: rgba(255,255,255,.8);
  transition: color var(--transition), background var(--transition);
}
.nav-links a:hover, .nav-links a.active {
  color: var(--gold);
  background: rgba(184,138,63,.10);
}

.nav-ctas {
  display: flex;
  align-items: center;
  gap: 12px;
}
.nav-wa {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--whatsapp);
  font-size: .85rem;
  font-weight: var(--fw-semibold);
}
.nav-wa svg { width: 18px; height: 18px; fill: var(--whatsapp); }

/* Hamburger */
.nav-burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  cursor: pointer;
}
.nav-burger span {
  width: 24px;
  height: 2px;
  background: var(--white);
  transition: transform var(--transition), opacity var(--transition);
  border-radius: 2px;
}
.nav-burger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-burger.open span:nth-child(2) { opacity: 0; }
.nav-burger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.nav-mobile {
  display: none;
  position: fixed;
  top: var(--nav-h);
  left: 0; right: 0;
  background: var(--navy-dark);
  border-top: 1px solid rgba(184,138,63,.15);
  padding: 20px 24px 28px;
  z-index: 999;
  transform: translateY(-10px);
  opacity: 0;
  transition: transform var(--transition), opacity var(--transition);
}
.nav-mobile.open {
  display: block;
  transform: translateY(0);
  opacity: 1;
}
.nav-mobile a {
  display: block;
  padding: 12px 0;
  border-bottom: 1px solid rgba(255,255,255,.06);
  color: rgba(255,255,255,.85);
  font-weight: var(--fw-medium);
}
.nav-mobile a:last-child { border-bottom: none; }
.nav-mobile a:hover { color: var(--gold); }
.nav-mobile .btn { margin-top: 16px; width: 100%; justify-content: center; }

/* ─── Section Layout ────────────────────────────────────────────────────── */
.section { padding: var(--section-py) 0; }
.section-sm { padding: 60px 0; }
.section-lg { padding: 128px 0; }
.section-dark { background: var(--navy); }
.section-dark h1,
.section-dark h2,
.section-dark h3,
.section-dark h4 { color: var(--white); }
.section-dark p { color: rgba(255,255,255,.7); }
.section-navy-light { background: var(--navy-light); }
.section-off-white { background: var(--off-white); }

.section-header { margin-bottom: 56px; }
.section-header h2 { margin-bottom: 12px; }
.section-header p { max-width: 620px; font-size: 1.05rem; }
.section-header.center { text-align: center; }
.section-header.center p { margin: 0 auto; }

.eyebrow {
  display: inline-block;
  font-size: .75rem;
  font-weight: var(--fw-bold);
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 12px;
}

.gold-line {
  display: block;
  width: 48px;
  height: 3px;
  background: var(--gold);
  border-radius: 2px;
  margin-top: 16px;
}
.gold-line.center { margin: 16px auto 0; }

/* ─── Grid Utilities ────────────────────────────────────────────────────── */
.grid-2 { display: grid; grid-template-columns: repeat(2,1fr); gap: 32px; }
.grid-3 { display: grid; grid-template-columns: repeat(3,1fr); gap: 28px; }
.grid-4 { display: grid; grid-template-columns: repeat(4,1fr); gap: 24px; }
.grid-auto { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px,1fr)); gap: 28px; }

/* ─── Cards ─────────────────────────────────────────────────────────────── */
.card {
  background: var(--white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition);
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}
.card-body { padding: 24px; }

/* Proyecto card */
.card-proyecto {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-lg);
  background: var(--navy-dark);
  aspect-ratio: 4/3;
  cursor: pointer;
}
.card-proyecto img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.card-proyecto:hover img { transform: scale(1.06); }
.card-proyecto-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(8,26,43,.90) 0%, rgba(8,26,43,.20) 50%, transparent 100%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 24px;
  transition: background var(--transition);
}
.card-proyecto:hover .card-proyecto-overlay {
  background: linear-gradient(to top, rgba(8,26,43,.95) 0%, rgba(8,26,43,.40) 60%, transparent 100%);
}
.card-proyecto-badge {
  position: absolute;
  top: 16px;
  left: 16px;
  background: var(--gold);
  color: var(--white);
  font-size: .7rem;
  font-weight: var(--fw-bold);
  letter-spacing: .08em;
  text-transform: uppercase;
  padding: 4px 12px;
  border-radius: var(--radius-full);
}
.card-proyecto h3 {
  color: var(--white);
  font-size: 1.05rem;
  margin-bottom: 4px;
}
.card-proyecto p {
  color: rgba(255,255,255,.65);
  font-size: .8rem;
}
.card-proyecto-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--gold);
  font-size: .8rem;
  font-weight: var(--fw-semibold);
  margin-top: 12px;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity var(--transition), transform var(--transition);
}
.card-proyecto:hover .card-proyecto-link { opacity: 1; transform: translateY(0); }

/* Servicio card */
.card-servicio {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--gray-200);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  position: relative;
  overflow: hidden;
}
.card-servicio::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--gold);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition);
}
.card-servicio:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: var(--gold); }
.card-servicio:hover::before { transform: scaleX(1); }
.card-servicio-icon {
  width: 56px; height: 56px;
  background: rgba(184,138,63,.1);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}
.card-servicio-icon svg { width: 28px; height: 28px; }
.card-servicio h3 { font-size: 1.1rem; margin-bottom: 10px; color: var(--navy); }
.card-servicio p { font-size: .9rem; color: var(--text-medium); line-height: 1.6; }
.card-servicio-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--gold);
  font-size: .875rem;
  font-weight: var(--fw-semibold);
  margin-top: 20px;
}

/* ─── Hero Section ──────────────────────────────────────────────────────── */
.hero {
  position: relative;
  min-height: calc(100vh - var(--nav-h));
  display: flex;
  align-items: center;
  overflow: hidden;
  background: var(--navy-dark);
}
.hero-bg {
  position: absolute;
  inset: 0;
  background-image: url('../img/hero-bg.jpg');
  background-size: cover;
  background-position: center 30%;
  opacity: .45;
}
.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(12,37,61,.85) 0%, rgba(12,37,61,.50) 60%, rgba(12,37,61,.30) 100%);
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 700px;
  padding: 80px 0;
}
.hero-content h1 {
  color: var(--white);
  margin-bottom: 20px;
  letter-spacing: -0.03em;
}
.hero-content h1 em {
  font-style: normal;
  color: var(--gold);
}
.hero-content .hero-sub {
  color: rgba(255,255,255,.75);
  font-size: clamp(1rem, 1.8vw, 1.2rem);
  margin-bottom: 36px;
  max-width: 560px;
}
.hero-ctas {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 56px;
}
.hero-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 32px;
}
.hero-stat-item { text-align: left; }
.hero-stat-num {
  font-size: 2rem;
  font-weight: var(--fw-extrabold);
  color: var(--gold);
  line-height: 1;
}
.hero-stat-label {
  font-size: .8rem;
  color: rgba(255,255,255,.65);
  margin-top: 4px;
  text-transform: uppercase;
  letter-spacing: .06em;
}

/* ─── Differentiators / Features ────────────────────────────────────────── */
.feature-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 24px; }
.feature-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}
.feature-icon {
  flex-shrink: 0;
  width: 48px; height: 48px;
  background: rgba(184,138,63,.12);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
}
.feature-icon svg { width: 24px; height: 24px; }
.feature-item h4 { font-size: 1rem; color: var(--white); margin-bottom: 4px; }
.feature-item p  { font-size: .875rem; color: rgba(255,255,255,.6); }

/* ─── Process Steps ─────────────────────────────────────────────────────── */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(3,1fr);
  gap: 0;
  position: relative;
}
.steps-grid::before {
  content: '';
  position: absolute;
  top: 32px;
  left: calc(100%/6);
  right: calc(100%/6);
  height: 2px;
  background: linear-gradient(to right, var(--gold), transparent);
}
.step-item {
  text-align: center;
  padding: 0 20px;
  position: relative;
}
.step-num {
  width: 64px; height: 64px;
  background: var(--gold);
  color: var(--white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  font-weight: var(--fw-extrabold);
  margin: 0 auto 20px;
  position: relative;
  z-index: 2;
  box-shadow: var(--shadow-gold);
}
.step-item h4 { color: var(--navy); margin-bottom: 8px; font-size: 1rem; }
.step-item p { font-size: .875rem; }

/* ─── Filters / Tabs ────────────────────────────────────────────────────── */
.filter-tabs {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 40px;
}
.filter-tab {
  padding: 8px 20px;
  border-radius: var(--radius-full);
  font-size: .875rem;
  font-weight: var(--fw-semibold);
  background: var(--gray-100);
  color: var(--text-medium);
  border: 2px solid transparent;
  transition: all var(--transition);
  cursor: pointer;
}
.filter-tab:hover { border-color: var(--gold); color: var(--gold); }
.filter-tab.active {
  background: var(--gold);
  color: var(--white);
  border-color: var(--gold);
}

/* ─── Blog Cards ────────────────────────────────────────────────────────── */
.card-articulo {
  display: flex;
  flex-direction: column;
  background: var(--white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--gray-200);
  transition: transform var(--transition), box-shadow var(--transition);
}
.card-articulo:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.card-articulo-img {
  aspect-ratio: 16/9;
  overflow: hidden;
  background: var(--navy);
}
.card-articulo-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s; }
.card-articulo:hover .card-articulo-img img { transform: scale(1.04); }
.card-articulo-body { padding: 24px; flex: 1; display: flex; flex-direction: column; }
.card-articulo-meta {
  display: flex;
  gap: 12px;
  align-items: center;
  margin-bottom: 12px;
}
.badge-intencion {
  font-size: .7rem;
  font-weight: var(--fw-bold);
  letter-spacing: .08em;
  text-transform: uppercase;
  padding: 3px 10px;
  border-radius: var(--radius-full);
  background: rgba(184,138,63,.12);
  color: var(--gold);
}
.card-articulo h3 { font-size: 1.05rem; margin-bottom: 8px; color: var(--navy); }
.card-articulo p { font-size: .875rem; color: var(--text-medium); flex: 1; }
.card-articulo-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--gold);
  font-size: .875rem;
  font-weight: var(--fw-semibold);
  margin-top: 16px;
}

/* ─── Cotizador Stepper ─────────────────────────────────────────────────── */
.cotizador-wrap {
  background: var(--white);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}
.cotizador-header {
  background: var(--navy);
  padding: 32px 40px;
  color: var(--white);
}
.cotizador-header h2 { color: var(--white); margin-bottom: 8px; }
.stepper {
  display: flex;
  gap: 0;
  margin-top: 24px;
}
.step-indicator {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: 1;
}
.step-indicator:last-child { flex: 0; }
.step-circle {
  width: 32px; height: 32px;
  border-radius: 50%;
  background: rgba(255,255,255,.15);
  color: rgba(255,255,255,.5);
  font-size: .875rem;
  font-weight: var(--fw-bold);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: background var(--transition), color var(--transition);
}
.step-indicator.active .step-circle { background: var(--gold); color: var(--white); }
.step-indicator.done .step-circle { background: var(--whatsapp); color: var(--white); }
.step-label { font-size: .7rem; color: rgba(255,255,255,.55); font-weight: var(--fw-medium); }
.step-indicator.active .step-label { color: var(--white); }
.step-line { flex: 1; height: 2px; background: rgba(255,255,255,.15); margin: 0 4px; }

.cotizador-body { padding: 40px; }
.cotizador-panel { display: none; }
.cotizador-panel.active { display: block; }

/* Tipo selector */
.tipo-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 12px;
}
.tipo-option {
  border: 2px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: 20px 16px;
  text-align: center;
  cursor: pointer;
  transition: all var(--transition);
  user-select: none;
}
.tipo-option:hover { border-color: var(--gold); }
.tipo-option.selected {
  border-color: var(--gold);
  background: rgba(184,138,63,.08);
}
.tipo-option .tipo-icon { font-size: 2rem; margin-bottom: 8px; }
.tipo-option .tipo-label { font-size: .875rem; font-weight: var(--fw-semibold); color: var(--navy); }

/* Form inputs */
.form-group { margin-bottom: 20px; }
.form-label {
  display: block;
  font-size: .875rem;
  font-weight: var(--fw-semibold);
  color: var(--navy);
  margin-bottom: 6px;
}
.form-label .req { color: var(--gold); margin-left: 2px; }
.form-control {
  width: 100%;
  padding: 12px 16px;
  border: 2px solid var(--gray-200);
  border-radius: var(--radius-md);
  font-family: inherit;
  font-size: .9375rem;
  color: var(--text-dark);
  background: var(--white);
  transition: border-color var(--transition), box-shadow var(--transition);
  appearance: none;
}
.form-control:focus {
  outline: none;
  border-color: var(--gold);
  box-shadow: 0 0 0 3px rgba(184,138,63,.12);
}
.form-control::placeholder { color: var(--gray-400); }
textarea.form-control { resize: vertical; min-height: 100px; }

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-hint { font-size: .8rem; color: var(--text-light); margin-top: 4px; }

.medida-calc {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 16px;
  padding: 16px 20px;
  background: var(--navy);
  border-radius: var(--radius-md);
  color: var(--white);
}
.medida-calc .result { font-size: 1.4rem; font-weight: var(--fw-extrabold); color: var(--gold); }

.cotizador-resultado {
  text-align: center;
  padding: 32px;
  background: var(--navy);
  border-radius: var(--radius-lg);
  margin-bottom: 24px;
}
.cotizador-resultado .rango {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: var(--fw-extrabold);
  color: var(--gold);
  margin: 12px 0;
}
.aviso-legal {
  background: rgba(184,138,63,.08);
  border-left: 3px solid var(--gold);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  font-size: .85rem;
  color: var(--text-medium);
  margin-top: 16px;
}

/* Stepper navigation */
.cotizador-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 32px;
  padding-top: 24px;
  border-top: 1px solid var(--gray-200);
}
.cotizador-progress {
  font-size: .8rem;
  color: var(--text-light);
}

/* ─── CTA Block ─────────────────────────────────────────────────────────── */
.cta-block {
  background: linear-gradient(135deg, var(--navy) 0%, var(--navy-light) 100%);
  border-radius: var(--radius-xl);
  padding: 64px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-block::before {
  content: '';
  position: absolute;
  top: -60%;
  right: -10%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(184,138,63,.15) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}
.cta-block h2 { color: var(--white); margin-bottom: 12px; }
.cta-block p { color: rgba(255,255,255,.7); font-size: 1.05rem; margin-bottom: 32px; max-width: 520px; margin-left: auto; margin-right: auto; }
.cta-block .cta-btns { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* ─── Footer ────────────────────────────────────────────────────────────── */
.footer {
  background: var(--navy-dark);
  border-top: 1px solid rgba(184,138,63,.12);
  color: rgba(255,255,255,.75);
}
.footer-main {
  padding: 64px 0 48px;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
}
.footer-brand p { color: rgba(255,255,255,.6); margin-top: 16px; font-size: .9rem; line-height: 1.7; }
.footer-socials {
  display: flex;
  gap: 12px;
  margin-top: 20px;
}
.footer-social-link {
  width: 36px; height: 36px;
  background: rgba(255,255,255,.07);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition);
}
.footer-social-link:hover { background: var(--gold); }
.footer-social-link svg { width: 18px; height: 18px; fill: white; }

.footer-col h4 { color: var(--gold); font-size: .85rem; letter-spacing: .08em; text-transform: uppercase; margin-bottom: 20px; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul a { color: rgba(255,255,255,.65); font-size: .9rem; transition: color var(--transition); }
.footer-col ul a:hover { color: var(--gold); }

.footer-contact-item {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  margin-bottom: 12px;
}
.footer-contact-item svg { width: 16px; height: 16px; fill: var(--gold); flex-shrink: 0; margin-top: 3px; }
.footer-contact-item span { font-size: .9rem; color: rgba(255,255,255,.65); }
.footer-contact-item a { color: rgba(255,255,255,.65); }
.footer-contact-item a:hover { color: var(--gold); }

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.06);
  padding: 20px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: .8rem;
  color: rgba(255,255,255,.35);
  flex-wrap: wrap;
  gap: 8px;
}

/* ─── Page Header (inner pages) ─────────────────────────────────────────── */
.page-header {
  background: linear-gradient(135deg, var(--navy-dark) 0%, var(--navy) 100%);
  padding: 72px 0 64px;
  position: relative;
  overflow: hidden;
}
.page-header::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0; right: 0;
  height: 60px;
  background: var(--white);
  clip-path: ellipse(55% 100% at 50% 100%);
}
.page-header h1 { color: var(--white); margin-bottom: 12px; }
.page-header p { color: rgba(255,255,255,.7); font-size: 1.05rem; }
.page-header .eyebrow { color: var(--gold); }
.page-header-dark::after { background: var(--navy); }

/* ─── Galería de proyecto ───────────────────────────────────────────────── */
.galeria-tabs { display: flex; gap: 8px; margin-bottom: 16px; flex-wrap: wrap; }
.galeria-tab {
  padding: 8px 16px;
  border-radius: var(--radius-md);
  font-size: .8rem;
  font-weight: var(--fw-semibold);
  background: var(--gray-100);
  color: var(--text-medium);
  cursor: pointer;
  transition: all var(--transition);
}
.galeria-tab.active { background: var(--navy); color: var(--white); }

.galeria-img {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
  border-radius: var(--radius-lg);
  display: none;
}
.galeria-img.active { display: block; }

/* ─── Specs list ────────────────────────────────────────────────────────── */
.specs-list dt {
  font-size: .75rem;
  font-weight: var(--fw-bold);
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--gold);
  margin-bottom: 2px;
}
.specs-list dd {
  color: var(--text-dark);
  font-weight: var(--fw-medium);
  margin-bottom: 16px;
}

/* ─── Animations ────────────────────────────────────────────────────────── */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}
.fade-in-left  { transform: translateX(-24px); }
.fade-in-right { transform: translateX(24px); }
.fade-in-left.visible, .fade-in-right.visible { transform: translateX(0); }

/* Stagger delays */
.delay-1 { transition-delay: .1s; }
.delay-2 { transition-delay: .2s; }
.delay-3 { transition-delay: .3s; }
.delay-4 { transition-delay: .4s; }
.delay-5 { transition-delay: .5s; }

/* ─── Utilities ─────────────────────────────────────────────────────────── */
.mt-8  { margin-top: 8px; }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.mt-32 { margin-top: 32px; }
.mt-48 { margin-top: 48px; }
.mb-8  { margin-bottom: 8px; }
.mb-16 { margin-bottom: 16px; }
.mb-24 { margin-bottom: 24px; }
.mb-32 { margin-bottom: 32px; }
.mb-48 { margin-bottom: 48px; }
.d-flex { display: flex; }
.align-center { align-items: center; }
.justify-center { justify-content: center; }
.gap-8  { gap: 8px; }
.gap-16 { gap: 16px; }
.gap-24 { gap: 24px; }
.w-full { width: 100%; }
.hidden { display: none !important; }

/* ─── Divider ───────────────────────────────────────────────────────────── */
.divider {
  height: 1px;
  background: var(--gray-200);
  margin: 48px 0;
}
.divider-gold { background: linear-gradient(to right, var(--gold), transparent); }

/* ─── Alert / Notice ────────────────────────────────────────────────────── */
.alert {
  padding: 16px 20px;
  border-radius: var(--radius-md);
  font-size: .9rem;
  display: flex;
  gap: 12px;
  align-items: flex-start;
}
.alert-success { background: rgba(37,211,102,.1); color: #1a7a45; border-left: 3px solid var(--whatsapp); }
.alert-error   { background: rgba(220,38,38,.08); color: #991b1b; border-left: 3px solid #ef4444; }
.alert-warning { background: rgba(184,138,63,.1); color: var(--gold-dark); border-left: 3px solid var(--gold); }

/* ─── Responsive ────────────────────────────────────────────────────────── */
@media (max-width: 1024px) {
  :root { --section-py: 72px; }
  .footer-main { grid-template-columns: 2fr 1fr 1fr; }
  .footer-main > :last-child { grid-column: 1 / -1; }
  .feature-grid { grid-template-columns: repeat(2,1fr); }
  .grid-4 { grid-template-columns: repeat(2,1fr); }
}

@media (max-width: 768px) {
  :root { --section-py: 56px; --nav-h: 64px; }
  body { padding-top: var(--nav-h); }

  .nav-links, .nav-ctas { display: none; }
  .nav-burger { display: flex; }

  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .feature-grid { grid-template-columns: 1fr; }
  .steps-grid { grid-template-columns: 1fr; gap: 32px; }
  .steps-grid::before { display: none; }

  .hero-content { padding: 60px 0; }
  .hero-ctas { flex-direction: column; }
  .hero-ctas .btn { width: 100%; justify-content: center; }
  .hero-stats { gap: 20px; }

  .cta-block { padding: 40px 24px; }
  .cta-block .cta-btns { flex-direction: column; }
  .cta-block .cta-btns .btn { justify-content: center; }

  .footer-main { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; text-align: center; }

  .form-row { grid-template-columns: 1fr; }
  .cotizador-body { padding: 24px; }
  .cotizador-header { padding: 24px; }
  .tipo-grid { grid-template-columns: repeat(2,1fr); }

  .page-header { padding: 56px 0 52px; }
}

@media (max-width: 480px) {
  .container { padding: 0 16px; }
  h1 { font-size: 1.875rem; }
  .btn { padding: 12px 20px; font-size: .875rem; }
  .btn-lg { padding: 14px 24px; }
  .tipo-grid { grid-template-columns: repeat(2,1fr); gap: 8px; }
  .tipo-option { padding: 14px 10px; }
}