/* ==========================================================================
   TERMODUC - Climatización Central, Conductos & Servicios Eléctricos
   Modern Light Industrial UI/UX Design System (Vercel Ready)
   Bi-Directional Dual-Track Infinite Slider System
   ========================================================================== */

:root {
  /* Color Palette - Clean Light Theme */
  --bg-primary: #F8FAFC;
  --bg-secondary: #FFFFFF;
  --bg-card: #FFFFFF;
  --bg-card-hover: #F1F5F9;
  --bg-glass: rgba(255, 255, 255, 0.95);
  --border-glass: #E2E8F0;
  --border-active: #0096C7;

  /* Accents */
  --cyan-primary: #0096C7;
  --cyan-hover: #0077B6;
  --cyan-glow: rgba(0, 150, 199, 0.18);
  --orange-accent: #EA580C;
  --orange-hover: #C2410C;
  --orange-glow: rgba(234, 88, 12, 0.18);
  --whatsapp-green: #25D366;
  --whatsapp-hover: #1EBE57;
  --whatsapp-glow: rgba(37, 211, 102, 0.35);
  
  /* Neutral Text - High Contrast Slate */
  --text-main: #0F172A;
  --text-muted: #475569;
  --text-dark: #020617;
  
  /* Typography */
  --font-heading: 'Geist', 'Outfit', sans-serif;
  --font-body: 'Inter', system-ui, sans-serif;
  
  /* Radius & Shadows */
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-pill: 9999px;
  
  --shadow-card: 0 10px 30px rgba(15, 23, 42, 0.06);
  --shadow-hover: 0 20px 40px rgba(15, 23, 42, 0.12);
  --shadow-cta: 0 8px 25px rgba(37, 211, 102, 0.4);
  --transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html, body {
  overflow-x: hidden;
  width: 100%;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  background-color: var(--bg-primary);
  color: var(--text-main);
  line-height: 1.6;
}

/* ==========================================================================
   TYPOGRAPHY SCALE (H1 > H2 > H3 > Body)
   ========================================================================== */
h1 {
  font-family: var(--font-heading);
  font-size: 3.6rem;
  font-weight: 800;
  line-height: 1.12;
  color: var(--text-dark);
  letter-spacing: -0.8px;
}

h2 {
  font-family: var(--font-heading);
  font-size: 2.3rem;
  font-weight: 800;
  line-height: 1.25;
  color: var(--text-dark);
  letter-spacing: -0.3px;
}

h3 {
  font-family: var(--font-heading);
  font-size: 1.3rem;
  font-weight: 700;
  line-height: 1.35;
  color: var(--text-dark);
}

h4 {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-dark);
}

p {
  font-size: 1.05rem;
  color: var(--text-muted);
  line-height: 1.6;
}

.container {
  width: 92%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 15px;
}

.text-cyan { color: var(--cyan-primary); }
.text-orange { color: var(--orange-accent); }
.text-green { color: var(--whatsapp-green); }

.gradient-cyan {
  background: linear-gradient(135deg, #0F172A 20%, var(--cyan-primary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* Navbar */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-glass);
  padding: 12px 0;
  box-shadow: 0 2px 12px rgba(0,0,0,0.03);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  flex-shrink: 0;
}

.brand-logo-img {
  height: 44px;
  width: auto;
  object-fit: contain;
  background: #FFF;
  padding: 4px;
  border-radius: 6px;
  transition: var(--transition);
}

.brand-logo-img:hover {
  transform: scale(1.03);
}

.brand-logo-text {
  font-family: var(--font-heading);
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--text-dark);
  letter-spacing: -0.3px;
}

.nav-links {
  display: flex;
  gap: 22px;
  list-style: none;
}

.nav-links a {
  color: var(--text-muted);
  font-weight: 600;
  font-size: 0.9rem;
  text-decoration: none;
  transition: var(--transition);
}

.nav-links a:hover {
  color: var(--cyan-primary);
}

/* ==========================================================================
   BUTTON SYSTEM & CTAs (CRO Optimized)
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 12px 22px;
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 700;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  text-decoration: none;
  transition: var(--transition);
  max-width: 100%;
}

.btn-whatsapp-hero {
  background: linear-gradient(135deg, #25D366, #1EBE57);
  color: #FFFFFF !important;
  font-size: 1.05rem;
  padding: 15px 32px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-cta);
  letter-spacing: 0.2px;
  text-align: center;
}

.btn-whatsapp-hero:hover {
  transform: translateY(-3px);
  background: linear-gradient(135deg, #22C55E, #16A34A);
  box-shadow: 0 12px 30px rgba(37, 211, 102, 0.5);
}

.btn-cyan {
  background: linear-gradient(135deg, var(--cyan-primary), #0077B6);
  color: #FFF;
  box-shadow: 0 4px 15px var(--cyan-glow);
}

.btn-cyan:hover {
  transform: translateY(-2px);
  background: linear-gradient(135deg, var(--cyan-hover), #005F73);
  box-shadow: 0 8px 25px var(--cyan-glow);
}

.btn-whatsapp {
  background: linear-gradient(135deg, var(--whatsapp-green), #1EBE57);
  color: #FFF;
  box-shadow: 0 4px 15px rgba(37, 211, 102, 0.25);
}

.btn-whatsapp:hover {
  transform: translateY(-2px);
  background: linear-gradient(135deg, #20BA5A, #189E47);
  box-shadow: 0 8px 25px rgba(37, 211, 102, 0.4);
}

.btn-outline {
  background: #FFFFFF;
  border: 1px solid #CBD5E1;
  color: var(--text-main);
  box-shadow: none;
  text-align: center;
  padding: 15px 28px;
  border-radius: var(--radius-md);
}

.btn-outline:hover {
  border-color: var(--cyan-primary);
  color: var(--cyan-primary);
  background: #F8FAFC;
  transform: translateY(-1px);
}

.btn-insta {
  background: linear-gradient(135deg, #833AB4, #FD1D1D, #F56040);
  color: #FFF;
  box-shadow: 0 4px 15px rgba(225, 48, 108, 0.3);
}

.btn-insta:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(225, 48, 108, 0.45);
}

.btn-form-submit {
  width: 100%;
  padding: 16px 24px;
  font-size: 1.05rem;
  font-weight: 800;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, #25D366, #16A34A);
  color: #FFFFFF;
  box-shadow: 0 8px 25px rgba(37, 211, 102, 0.35);
  letter-spacing: 0.3px;
  margin-top: 10px;
  white-space: normal;
  text-align: center;
}

.btn-form-submit:hover {
  transform: translateY(-2px);
  background: linear-gradient(135deg, #22C55E, #15803D);
  box-shadow: 0 12px 30px rgba(37, 211, 102, 0.5);
}

/* ==========================================================================
   1. HERO SECTION (Clean Centered Layout)
   ========================================================================== */
.hero-visual {
  padding: 170px 0 95px;
  background: linear-gradient(180deg, #FFFFFF 0%, #F8FAFC 100%);
  text-align: center;
  overflow: hidden;
}

.hero-content-centered {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 18px;
  background: #E0F2FE;
  border: 1px solid #BAE6FD;
  border-radius: var(--radius-pill);
  color: var(--cyan-primary);
  font-size: 0.85rem;
  font-weight: 700;
  margin-bottom: 24px;
}

.hero-title {
  margin-bottom: 22px;
  word-wrap: break-word;
}

.hero-subtitle {
  font-size: 1.25rem;
  font-weight: 500;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 36px;
  max-width: 760px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  width: 100%;
}

/* ==========================================================================
   2. BI-DIRECTIONAL DUAL-TRACK CLIENTS SLIDER SECTION
   ========================================================================== */
.clients-slider-section {
  padding: 55px 0 65px;
  background: #FFFFFF;
  border-top: 1px solid var(--border-glass);
  border-bottom: 1px solid var(--border-glass);
  overflow: hidden;
}

.slider-title {
  text-align: center;
  font-size: 0.85rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 2.5px;
  color: var(--cyan-primary);
  margin-bottom: 32px;
}

.slider-container {
  display: flex;
  overflow: hidden;
  position: relative;
  user-select: none;
}

.slider-container::before,
.slider-container::after {
  content: '';
  position: absolute;
  top: 0;
  width: 140px;
  height: 100%;
  z-index: 2;
  pointer-events: none;
}

.slider-container::before {
  left: 0;
  background: linear-gradient(to right, #FFFFFF, transparent);
}

.slider-container::after {
  right: 0;
  background: linear-gradient(to left, #FFFFFF, transparent);
}

/* Track 1: Move Left */
.slider-track-left {
  display: flex;
  align-items: center;
  gap: 32px;
  width: max-content;
  animation: scrollLeft 50s linear infinite;
}

/* Track 2: Move Right */
.slider-track-right {
  display: flex;
  align-items: center;
  gap: 32px;
  width: max-content;
  animation: scrollRight 50s linear infinite;
}

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

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

.logo-item {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  height: 58px;
  padding: 8px 22px;
  background: #FFFFFF;
  border: 1px solid #E2E8F0;
  border-radius: var(--radius-sm);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.92rem;
  color: #475569;
  white-space: nowrap;
  box-shadow: 0 2px 8px rgba(0,0,0,0.03);
  transition: var(--transition);
}

.logo-item-img {
  height: 42px;
  width: auto;
  max-width: 170px;
  object-fit: contain;
  transition: var(--transition);
}

.logo-item i {
  font-size: 1.15rem;
  color: var(--cyan-primary);
}

.logo-item:hover {
  border-color: var(--cyan-primary);
  color: var(--text-dark);
  box-shadow: 0 6px 20px rgba(0,0,0,0.08);
  transform: translateY(-2px);
}

/* ==========================================================================
   SECTION HEADERS & SPACING RHYTHM
   ========================================================================== */
.section-header {
  text-align: center;
  margin-bottom: 50px;
  max-width: 720px;
  margin-left: auto;
  margin-right: auto;
}

.section-subtitle {
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 2.5px;
  color: var(--cyan-primary);
  font-weight: 800;
  margin-bottom: 10px;
  display: block;
}

.section-desc {
  color: var(--text-muted);
  font-size: 1.05rem;
  margin-top: 10px;
}

/* ==========================================================================
   3. SERVICIOS ESPECIALIZADOS
   ========================================================================== */
.services-section {
  padding: 95px 0;
  background: #F8FAFC;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 28px;
}

.service-box {
  background: #FFFFFF;
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  padding: 32px;
  box-shadow: var(--shadow-card);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.service-box:hover {
  border-color: var(--border-active);
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}

.service-icon-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 22px;
}

.service-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-sm);
  background: #E0F2FE;
  border: 1px solid #BAE6FD;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  color: var(--cyan-primary);
}

.service-icon.orange {
  background: #FFEDD5;
  border-color: #FED7AA;
  color: var(--orange-accent);
}

.service-bullets {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 18px;
  font-size: 0.92rem;
  color: var(--text-muted);
}

.service-bullets li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  line-height: 1.5;
}

.service-bullets li i {
  color: var(--cyan-primary);
  margin-top: 3px;
  font-size: 0.85rem;
}

/* ==========================================================================
   4. GALERÍA DE PROYECTOS EN OBRA
   ========================================================================== */
.gallery-section {
  padding: 95px 0;
  background: #FFFFFF;
  border-top: 1px solid var(--border-glass);
}

.gallery-masonry {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 22px;
}

.photo-card {
  position: relative;
  height: 310px;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--border-glass);
  box-shadow: var(--shadow-card);
  cursor: pointer;
  transition: var(--transition);
  background: #FFF;
}

.photo-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition);
}

.photo-card:hover img {
  transform: scale(1.08);
}

.photo-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 22px;
  background: linear-gradient(to top, rgba(15, 23, 42, 0.92), transparent);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
}

.photo-tag {
  align-self: flex-start;
  font-size: 0.75rem;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  background: rgba(0, 150, 199, 0.25);
  color: #E0F2FE;
  border: 1px solid rgba(224, 242, 254, 0.4);
  margin-bottom: 8px;
  font-weight: 600;
}

.photo-tag.orange {
  background: rgba(234, 88, 12, 0.25);
  color: #FFEDD5;
  border-color: rgba(255, 237, 213, 0.4);
}

.photo-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: #FFF;
}

/* ==========================================================================
   5. SOBRE NOSOTROS
   ========================================================================== */
.about-section {
  padding: 95px 0;
  background: #F8FAFC;
  border-top: 1px solid var(--border-glass);
}

.about-card {
  background: linear-gradient(135deg, #FFFFFF 0%, #F8FAFC 100%);
  border: 1px solid #E2E8F0;
  border-radius: var(--radius-lg);
  padding: 48px;
  box-shadow: var(--shadow-card);
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 45px;
  align-items: center;
}

.about-text h2 {
  margin-bottom: 18px;
}

.about-text p {
  font-size: 1.05rem;
  line-height: 1.7;
  margin-bottom: 18px;
}

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

.about-feat-box {
  background: #FFFFFF;
  border: 1px solid #E2E8F0;
  border-radius: var(--radius-md);
  padding: 22px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.03);
  transition: var(--transition);
}

.about-feat-box:hover {
  border-color: var(--cyan-primary);
  transform: translateY(-3px);
}

.about-feat-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: #E0F2FE;
  color: var(--cyan-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  margin-bottom: 14px;
}

.about-feat-icon.orange {
  background: #FFEDD5;
  color: var(--orange-accent);
}

.about-feat-box h4 {
  margin-bottom: 6px;
}

.about-feat-box p {
  font-size: 0.84rem;
  margin: 0;
  line-height: 1.45;
}

/* ==========================================================================
   6. PRESUPUESTO FORM & INSTAGRAM FEED (Contacto Final)
   ========================================================================== */
.cotizador-section {
  padding: 95px 0;
  background: #FFFFFF;
  border-top: 1px solid var(--border-glass);
}

.whatsapp-form-card {
  max-width: 720px;
  margin: 0 auto;
  background: #FFFFFF;
  border: 1px solid #E2E8F0;
  border-radius: var(--radius-lg);
  padding: 40px 36px;
  box-shadow: var(--shadow-card);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 8px;
}

.form-control {
  width: 100%;
  padding: 13px 16px;
  background: #F8FAFC;
  border: 1px solid #CBD5E1;
  border-radius: var(--radius-sm);
  color: var(--text-main);
  font-family: var(--font-body);
  font-size: 0.95rem;
  transition: var(--transition);
}

.form-control:focus {
  outline: none;
  border-color: var(--cyan-primary);
  background: #FFFFFF;
  box-shadow: 0 0 0 3px var(--cyan-glow);
}

/* Instagram Live Feed Section */
.insta-section {
  padding: 85px 0;
  background: #F8FAFC;
  border-top: 1px solid var(--border-glass);
}

/* Footer Brand Logo */
.brand-logo-img-footer {
  height: 52px;
  width: auto;
  object-fit: contain;
  margin-bottom: 12px;
  border-radius: 6px;
  background: #FFF;
  padding: 4px;
}

footer {
  background: #0F172A;
  padding: 50px 0 28px;
  border-top: 1px solid #1E293B;
  color: #94A3B8;
}

.deploy-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background: #1E293B;
  border: 1px solid #334155;
  border-radius: var(--radius-pill);
  font-size: 0.8rem;
  color: #94A3B8;
}

/* ==========================================================================
   MOBILE & RESPONSIVE FIXES
   ========================================================================== */
@media (max-width: 992px) {

  .about-card {
    grid-template-columns: 1fr;
    padding: 34px 24px;
  }
}

@media (max-width: 768px) {
  h1 {
    font-size: 2.3rem;
    line-height: 1.15;
  }

  h2 {
    font-size: 1.75rem;
  }

  .nav-btn-cta {
    padding: 7px 12px;
    font-size: 0.8rem;
  }
  
  .brand-logo-img {
    height: 36px;
  }
  
  .brand-logo-text {
    font-size: 1.15rem;
  }

  .nav-links {
    display: none;
  }

  .hero-visual {
    padding: 115px 0 50px;
  }

  .hero-subtitle {
    font-size: 1rem;
    line-height: 1.5;
    margin-bottom: 26px;
  }

  .hero-actions {
    flex-direction: column;
    gap: 12px;
    width: 100%;
  }

  .hero-actions .btn {
    width: 100%;
    text-align: center;
    justify-content: center;
    padding: 14px 18px;
    font-size: 0.95rem;
    white-space: normal;
    word-break: break-word;
    box-sizing: border-box;
  }

  .btn-whatsapp-hero {
    font-size: 0.95rem;
    padding: 14px 18px;
  }

  .services-section,
  .gallery-section,
  .about-section,
  .cotizador-section,
  .insta-section {
    padding: 60px 0;
  }

  .form-row {
    grid-template-columns: 1fr !important;
    gap: 14px;
  }

  .whatsapp-form-card {
    padding: 24px 18px;
  }

  .form-control {
    font-size: 0.9rem;
    padding: 11px 13px;
  }

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

@media (max-width: 440px) {
  .nav-btn-text-full {
    display: none;
  }
  .nav-btn-text-short {
    display: inline;
  }
  .nav-btn-cta {
    padding: 6px 10px;
    font-size: 0.75rem;
  }
  
  .hero-badge {
    font-size: 0.78rem;
    padding: 5px 12px;
  }
}

@media (min-width: 441px) {
  .nav-btn-text-short {
    display: none;
  }
}