/* ==========================================================================
   AquaSur - Purificación de Agua
   Design System & Styling Master File
   ========================================================================== */

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

:root {
  /* Color Palette - Premium Hydro Aesthetic */
  --primary-deep: #03045E;
  --primary: #0077B6;
  --primary-light: #0096C7;
  --accent-cyan: #00B4D8;
  --accent-teal: #48CAE4;
  --accent-glow: #90E0EF;
  --aqua-mist: #E0F7FA;
  
  --bg-dark: #070D19;
  --bg-dark-card: rgba(15, 23, 42, 0.75);
  --bg-dark-surface: #0F172A;
  
  --text-main: #F8FAFC;
  --text-muted: #94A3B8;
  --text-dark: #1E293B;
  
  --border-light: rgba(255, 255, 255, 0.1);
  --border-glow: rgba(0, 180, 216, 0.3);
  
  --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.3), 0 10px 10px -5px rgba(0, 0, 0, 0.2);
  --shadow-cyan: 0 10px 30px -10px rgba(0, 180, 216, 0.4);
  
  --font-heading: 'Outfit', sans-serif;
  --font-body: 'Plus Jakarta Sans', sans-serif;
  
  --transition-fast: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Reset & Core Base */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-body);
  background-color: var(--bg-dark);
  color: var(--text-main);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
}

/* Background Ambient Glows */
body::before {
  content: '';
  position: fixed;
  top: -200px;
  right: -200px;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(0, 180, 216, 0.15) 0%, rgba(3, 4, 94, 0) 70%);
  z-index: -1;
  pointer-events: none;
}

body::after {
  content: '';
  position: fixed;
  bottom: -200px;
  left: -200px;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(0, 119, 182, 0.12) 0%, rgba(3, 4, 94, 0) 70%);
  z-index: -1;
  pointer-events: none;
}

/* Typography Utility */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  color: #FFFFFF;
}

.gradient-text {
  background: linear-gradient(135deg, #FFFFFF 0%, var(--accent-teal) 50%, var(--accent-cyan) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.gradient-text-alt {
  background: linear-gradient(135deg, var(--accent-teal) 0%, var(--accent-glow) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* Container */
.container {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  padding: 0.875rem 1.75rem;
  border-radius: 9999px;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 1rem;
  text-decoration: none;
  cursor: pointer;
  transition: var(--transition-smooth);
  border: 1px solid transparent;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary-light) 0%, var(--primary) 100%);
  color: #FFFFFF;
  box-shadow: var(--shadow-cyan);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 15px 35px -5px rgba(0, 180, 216, 0.6);
  background: linear-gradient(135deg, var(--accent-cyan) 0%, var(--primary-light) 100%);
}

.btn-whatsapp {
  background: linear-gradient(135deg, #25D366 0%, #128C7E 100%);
  color: #FFFFFF;
  box-shadow: 0 10px 25px -5px rgba(37, 211, 102, 0.4);
}

.btn-whatsapp:hover {
  transform: translateY(-2px);
  box-shadow: 0 15px 35px -5px rgba(37, 211, 102, 0.6);
}

.btn-outline {
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--border-glow);
  color: var(--text-main);
  backdrop-filter: blur(10px);
}

.btn-outline:hover {
  background: rgba(0, 180, 216, 0.15);
  border-color: var(--accent-cyan);
  transform: translateY(-2px);
}

/* Header & Navigation */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  padding: 0.85rem 0;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(0, 119, 182, 0.15);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
  transition: var(--transition-smooth);
}

.header.scrolled {
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(0, 119, 182, 0.25);
  padding: 0.65rem 0;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.12);
}

.header-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.logo-container {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
  flex-shrink: 0;
  white-space: nowrap;
}

.logo-img {
  height: 44px;
  width: auto;
  flex-shrink: 0;
}

.logo-text {
  display: none; /* Hide redundant HTML text when full logo PNG with text is displayed */
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-link {
  color: #1E293B;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.9rem;
  white-space: nowrap;
  transition: var(--transition-fast);
  position: relative;
}

.nav-link:hover, .nav-link.active {
  color: #0077B6;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2.5px;
  background: #0077B6;
  transition: var(--transition-fast);
  border-radius: 99px;
}

.nav-link:hover::after, .nav-link.active::after {
  width: 100%;
}

#btnNavWa {
  padding: 0.55rem 1.15rem;
  font-size: 0.85rem;
  white-space: nowrap;
}

.menu-toggle {
  display: none;
  background: none;
  border: none;
  color: #0F172A;
  font-size: 1.75rem;
  cursor: pointer;
}

/* Hero Section */
.hero {
  padding-top: 10rem;
  padding-bottom: 5rem;
  position: relative;
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 3.5rem;
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 1rem;
  background: rgba(0, 180, 216, 0.1);
  border: 1px solid var(--border-glow);
  border-radius: 9999px;
  color: var(--accent-teal);
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
}

.hero-badge-dot {
  width: 8px;
  height: 8px;
  background: var(--accent-cyan);
  border-radius: 50%;
  box-shadow: 0 0 10px var(--accent-cyan);
}

.hero-title {
  font-size: 3.25rem;
  letter-spacing: -1px;
  margin-bottom: 1.25rem;
}

.hero-subtitle {
  font-size: 1.15rem;
  color: var(--text-muted);
  margin-bottom: 2.25rem;
  max-width: 540px;
}

.hero-cta-group {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 3rem;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border-light);
}

.stat-item h4 {
  font-size: 1.75rem;
  color: var(--accent-teal);
}

.stat-item p {
  font-size: 0.875rem;
  color: var(--text-muted);
}

.hero-visual {
  position: relative;
}

.hero-img-card {
  position: relative;
  border-radius: 24px;
  overflow: hidden;
  background: var(--bg-dark-card);
  border: 1px solid var(--border-glow);
  box-shadow: var(--shadow-lg);
  backdrop-filter: blur(12px);
}

.hero-img-card img {
  width: 100%;
  height: auto;
  display: block;
  transition: var(--transition-smooth);
}

.hero-img-card:hover img {
  transform: scale(1.03);
}

.floating-badge {
  position: absolute;
  bottom: 2rem;
  left: -1.5rem;
  background: rgba(15, 23, 42, 0.9);
  border: 1px solid var(--border-glow);
  padding: 1rem 1.25rem;
  border-radius: 16px;
  backdrop-filter: blur(16px);
  display: flex;
  align-items: center;
  gap: 1rem;
  box-shadow: var(--shadow-lg);
}

.badge-icon {
  width: 44px;
  height: 44px;
  background: rgba(0, 180, 216, 0.15);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-cyan);
  font-size: 1.25rem;
}

/* Diagnostic Tool Section */
.section-diagnostic {
  padding: 5rem 0;
  background: linear-gradient(180deg, var(--bg-dark) 0%, #0A1224 100%);
}

.section-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 3.5rem auto;
}

.section-tag {
  color: var(--accent-teal);
  font-weight: 700;
  text-transform: uppercase;
  font-size: 0.85rem;
  letter-spacing: 1.5px;
  margin-bottom: 0.5rem;
  display: block;
}

.section-title {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

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

.diagnostic-card {
  background: var(--bg-dark-surface);
  border: 1px solid var(--border-glow);
  border-radius: 24px;
  padding: 2.5rem;
  box-shadow: var(--shadow-lg);
  max-width: 900px;
  margin: 0 auto;
}

.diagnostic-selector {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  margin-bottom: 2.5rem;
}

.option-card {
  background: rgba(255, 255, 255, 0.03);
  border: 2px solid var(--border-light);
  border-radius: 16px;
  padding: 1.5rem;
  cursor: pointer;
  transition: var(--transition-fast);
  text-align: left;
}

.option-card:hover, .option-card.selected {
  border-color: var(--accent-cyan);
  background: rgba(0, 180, 216, 0.08);
  transform: translateY(-2px);
}

.option-card-icon {
  font-size: 2rem;
  margin-bottom: 0.75rem;
}

.option-card h3 {
  font-size: 1.2rem;
  margin-bottom: 0.4rem;
}

.option-card p {
  font-size: 0.875rem;
  color: var(--text-muted);
}

.diagnostic-result {
  background: rgba(0, 180, 216, 0.05);
  border: 1px solid var(--border-glow);
  border-radius: 16px;
  padding: 2rem;
  display: none;
  animation: fadeIn 0.4s ease-in-out;
}

.diagnostic-result.active {
  display: block;
}

.result-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  align-items: center;
}

.result-content h4 {
  font-size: 1.35rem;
  color: var(--accent-teal);
  margin-bottom: 0.75rem;
}

.result-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 1rem 0;
}

.tag-contaminant {
  background: rgba(239, 68, 68, 0.15);
  color: #F87171;
  border: 1px solid rgba(239, 68, 68, 0.3);
  padding: 0.25rem 0.75rem;
  border-radius: 9999px;
  font-size: 0.8rem;
  font-weight: 600;
}

.result-img img {
  width: 100%;
  border-radius: 12px;
  border: 1px solid var(--border-light);
}

/* Products Section */
.section-products {
  padding: 5rem 0;
}

.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}

.product-card {
  background: var(--bg-dark-card);
  border: 1px solid var(--border-light);
  border-radius: 20px;
  overflow: hidden;
  transition: var(--transition-smooth);
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-sm);
}

.product-card:hover {
  transform: translateY(-8px);
  border-color: var(--border-glow);
  box-shadow: var(--shadow-lg), var(--shadow-cyan);
}

.product-img-wrapper {
  position: relative;
  width: 100%;
  height: 240px;
  background: #0B1426;
  overflow: hidden;
}

.product-img-wrapper img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition-smooth);
}

.product-card:hover .product-img-wrapper img {
  transform: scale(1.05);
}

.product-tag {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: rgba(3, 4, 94, 0.85);
  border: 1px solid var(--border-glow);
  color: var(--accent-teal);
  padding: 0.3rem 0.8rem;
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 700;
  backdrop-filter: blur(8px);
}

.product-body {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.product-title {
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
}

.product-desc {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-bottom: 1.25rem;
  flex-grow: 1;
}

.product-features {
  list-style: none;
  margin-bottom: 1.5rem;
}

.product-features li {
  font-size: 0.85rem;
  color: #CBD5E1;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.4rem;
}

.product-features li svg {
  color: var(--accent-cyan);
  flex-shrink: 0;
}

.product-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 1rem;
  border-top: 1px solid var(--border-light);
}

/* Health & Quality of Life Section */
.section-health {
  padding: 5rem 0;
  background: linear-gradient(180deg, #070D19 0%, #0B1426 50%, #070D19 100%);
}

.health-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
  margin-bottom: 3.5rem;
}

.health-card {
  background: var(--bg-dark-card);
  border: 1px solid var(--border-glow);
  border-radius: 24px;
  padding: 2rem;
  box-shadow: var(--shadow-lg);
  transition: var(--transition-smooth);
  backdrop-filter: blur(12px);
}

.health-card:hover {
  transform: translateY(-6px);
  border-color: var(--accent-cyan);
  box-shadow: 0 20px 40px -10px rgba(0, 180, 216, 0.3);
}

.health-card-header {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  margin-bottom: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border-light);
}

.health-icon {
  width: 56px;
  height: 56px;
  background: rgba(0, 180, 216, 0.12);
  border: 1px solid var(--border-glow);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.75rem;
  flex-shrink: 0;
}

.health-card-header h3 {
  font-size: 1.25rem;
  color: #FFFFFF;
}

.health-subtitle {
  font-size: 0.825rem;
  color: var(--accent-teal);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.health-list {
  list-style: none;
}

.health-list li {
  font-size: 0.925rem;
  color: #CBD5E1;
  margin-bottom: 1.1rem;
  line-height: 1.55;
  position: relative;
  padding-left: 1.4rem;
}

.health-list li::before {
  content: '•';
  color: var(--accent-cyan);
  font-size: 1.5rem;
  position: absolute;
  left: 0;
  top: -0.2rem;
}

.health-banner {
  background: linear-gradient(135deg, rgba(0, 119, 182, 0.25) 0%, rgba(3, 4, 94, 0.4) 100%);
  border: 1px solid var(--border-glow);
  border-radius: 24px;
  padding: 2.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  flex-wrap: wrap;
}

.health-banner-text h3 {
  font-size: 1.5rem;
  color: #FFFFFF;
  margin-bottom: 0.5rem;
}

.health-banner-text p {
  color: var(--text-muted);
  font-size: 0.95rem;
  max-width: 650px;
}

/* Trust & Personal Presence Section */
.section-trust {
  padding: 5rem 0;
  background: var(--bg-dark-surface);
  border-top: 1px solid var(--border-light);
  border-bottom: 1px solid var(--border-light);
}

.trust-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 2rem;
  margin-bottom: 3.5rem;
}

.trust-card {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-light);
  border-radius: 20px;
  padding: 2rem 1.5rem;
  text-align: center;
  transition: var(--transition-smooth);
}

.trust-card:hover {
  transform: translateY(-5px);
  border-color: var(--accent-teal);
  background: rgba(0, 180, 216, 0.06);
  box-shadow: var(--shadow-cyan);
}

.trust-icon-box {
  width: 64px;
  height: 64px;
  background: linear-gradient(135deg, rgba(0, 180, 216, 0.2) 0%, rgba(3, 4, 94, 0.4) 100%);
  border: 1px solid var(--border-glow);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  margin: 0 auto 1.25rem auto;
}

.trust-card h3 {
  font-size: 1.2rem;
  color: #FFFFFF;
  margin-bottom: 0.6rem;
}

.trust-card p {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.5;
}

.call-cta-box {
  background: linear-gradient(135deg, rgba(0, 119, 182, 0.2) 0%, rgba(15, 23, 42, 0.9) 100%);
  border: 1px solid var(--accent-cyan);
  border-radius: 24px;
  padding: 2.5rem;
  text-align: center;
  max-width: 900px;
  margin: 0 auto;
  box-shadow: 0 15px 40px rgba(0, 180, 216, 0.2);
}

.call-cta-box h3 {
  font-size: 1.8rem;
  color: #FFFFFF;
  margin-bottom: 0.5rem;
}

.call-cta-box p {
  color: var(--text-muted);
  font-size: 1.05rem;
  margin-bottom: 1.75rem;
}

.call-buttons-group {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.25rem;
  flex-wrap: wrap;
}

.btn-phone {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-deep) 100%);
  color: #FFFFFF;
  border: 1px solid var(--border-glow);
}

.btn-phone:hover {
  background: var(--primary-light);
  transform: translateY(-2px);
  box-shadow: var(--shadow-cyan);
}

/* Maintenance Plan Section */
.section-maintenance {
  padding: 5rem 0;
  position: relative;
}

.maintenance-card {
  background: linear-gradient(135deg, rgba(3, 4, 94, 0.9) 0%, rgba(15, 23, 42, 0.95) 100%);
  border: 1px solid var(--accent-cyan);
  border-radius: 28px;
  padding: 3.5rem 2.5rem;
  box-shadow: 0 20px 50px rgba(0, 180, 216, 0.25);
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 3rem;
  align-items: center;
}

.maintenance-list {
  list-style: none;
  margin: 1.5rem 0 2rem 0;
}

.maintenance-list li {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  margin-bottom: 1rem;
  font-size: 1rem;
}

.maintenance-list svg {
  color: var(--accent-cyan);
  font-size: 1.25rem;
  margin-top: 0.2rem;
  flex-shrink: 0;
}

/* Modal Popup */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(12px);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: var(--transition-fast);
  padding: 1.5rem;
}

.modal-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.modal-container {
  background: var(--bg-dark-surface);
  border: 1px solid var(--border-glow);
  border-radius: 24px;
  max-width: 800px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  padding: 2.5rem;
  position: relative;
  box-shadow: var(--shadow-lg);
}

.modal-close {
  position: absolute;
  top: 1.25rem;
  right: 1.25rem;
  background: rgba(255, 255, 255, 0.1);
  border: none;
  color: #FFFFFF;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  cursor: pointer;
  font-size: 1.25rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition-fast);
}

.modal-close:hover {
  background: var(--accent-cyan);
}

/* Footer */
.footer {
  background: #030712;
  border-top: 1px solid var(--border-light);
  padding: 4rem 0 2rem 0;
  color: var(--text-muted);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr repeat(3, 1fr);
  gap: 2.5rem;
  margin-bottom: 3rem;
}

.footer-brand p {
  font-size: 0.9rem;
  margin-top: 0.75rem;
}

.footer-col h5 {
  color: #FFFFFF;
  font-size: 1.05rem;
  margin-bottom: 1.25rem;
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: 0.6rem;
}

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

.footer-links a:hover {
  color: var(--accent-teal);
}

.footer-bottom {
  text-align: center;
  padding-top: 2rem;
  border-top: 1px solid var(--border-light);
  font-size: 0.85rem;
}

/* Floating WhatsApp Button */
.float-wa {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 60px;
  height: 60px;
  background: #25D366;
  color: #FFFFFF;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  box-shadow: 0 10px 25px rgba(37, 211, 102, 0.5);
  z-index: 999;
  text-decoration: none;
  transition: var(--transition-smooth);
}

.float-wa:hover {
  transform: scale(1.1) rotate(8deg);
  box-shadow: 0 15px 35px rgba(37, 211, 102, 0.7);
}

/* Keyframes */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Responsive Media Queries Master Suite */

@media (max-width: 1100px) {
  .header-nav {
    position: relative;
  }

  .nav-menu {
    position: fixed;
    top: 68px;
    left: -100%;
    width: 100%;
    height: calc(100vh - 68px);
    background: rgba(7, 13, 25, 0.98);
    backdrop-filter: blur(20px);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 1.75rem;
    transition: var(--transition-smooth);
    box-shadow: var(--shadow-lg);
    z-index: 1001;
    overflow-y: auto;
    padding: 2rem;
  }
  
  .nav-menu.active {
    left: 0;
  }

  .nav-link {
    font-size: 1.15rem;
  }

  #btnNavWa {
    width: 100%;
    max-width: 320px;
    padding: 0.85rem 1.5rem;
    font-size: 1rem;
    margin-top: 0.5rem;
  }
  
  .menu-toggle {
    display: block;
  }

  .hero-grid {
    grid-template-columns: 1fr;
    gap: 3rem;
    text-align: center;
  }

  .hero-subtitle {
    margin-left: auto;
    margin-right: auto;
  }

  .hero-cta-group {
    justify-content: center;
  }

  .hero-stats {
    max-width: 500px;
    margin: 0 auto;
  }

  .maintenance-card {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }
}

@media (max-width: 768px) {
  .hero {
    padding-top: 7rem;
    padding-bottom: 3.5rem;
  }

  .hero-title {
    font-size: 2.1rem;
  }

  .hero-subtitle {
    font-size: 1rem;
  }

  .hero-badge {
    font-size: 0.8rem;
    padding: 0.35rem 0.85rem;
  }

  .hero-cta-group {
    flex-direction: column;
    width: 100%;
    gap: 0.85rem;
  }

  .hero-cta-group .btn {
    width: 100%;
  }

  .hero-stats {
    grid-template-columns: 1fr;
    gap: 1.25rem;
  }

  .floating-badge {
    position: relative;
    left: 0;
    bottom: 0;
    margin-top: 1.25rem;
    width: 100%;
    justify-content: center;
  }

  .section-title {
    font-size: 2rem;
  }

  .section-desc {
    font-size: 0.95rem;
  }

  .diagnostic-card {
    padding: 1.5rem 1.25rem;
    border-radius: 20px;
  }

  .diagnostic-selector {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .result-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

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

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

  .health-banner {
    flex-direction: column;
    text-align: center;
    padding: 1.75rem 1.25rem;
  }

  .health-banner .btn {
    width: 100%;
  }

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

  .call-cta-box {
    padding: 1.75rem 1.25rem;
    border-radius: 20px;
  }

  .call-buttons-group {
    flex-direction: column;
    width: 100%;
  }

  .call-buttons-group .btn {
    width: 100%;
  }

  .maintenance-card {
    padding: 2rem 1.25rem;
    border-radius: 20px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .float-wa {
    width: 52px;
    height: 52px;
    font-size: 1.65rem;
    bottom: 1.25rem;
    right: 1.25rem;
  }

  .modal-container {
    padding: 1.5rem 1.25rem;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 1rem;
  }

  .hero-title {
    font-size: 1.85rem;
  }

  .section-title {
    font-size: 1.75rem;
  }

  .logo-text {
    font-size: 1.2rem;
  }

  .logo-img {
    height: 34px;
  }
}