:root {
  --bg-primary: #0a0f1d;
  --bg-secondary: #111827;
  --bg-glass: rgba(17, 24, 39, 0.7);
  --border-glass: rgba(255, 255, 255, 0.1);
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --accent-blue: #2563eb;
  --accent-cyan: #06b6d4;
  --gradient-main: linear-gradient(135deg, #2563eb 0%, #06b6d4 100%);
  --gradient-glow: rgba(37, 99, 235, 0.15);
  --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.5), 0 10px 10px -5px rgba(0, 0, 0, 0.4);
  --radius-lg: 16px;
  --radius-full: 9999px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
}

html {
  scroll-behavior: smooth;
  background-color: var(--bg-primary);
  color: var(--text-primary);
}

body {
  overflow-x: hidden;
  line-height: 1.6;
}

/* Glassmorphism & Cards */
.glass-panel {
  background: var(--bg-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
}

.card-elevated {
  background: var(--bg-secondary);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  transition: var(--transition);
}

.card-elevated:hover {
  transform: translateY(-5px);
  border-color: var(--accent-blue);
  box-shadow: 0 25px 30px -5px rgba(37, 99, 235, 0.2);
}

/* Header & Navigation */
header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  transition: var(--transition);
  background: rgba(10, 15, 29, 0.85);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-glass);
}

.nav-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 1rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 1.5rem;
  font-weight: 800;
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  text-decoration: none;
  letter-spacing: -0.5px;
}

.nav-links {
  display: flex;
  gap: 2rem;
  list-style: none;
  align-items: center;
}

.nav-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
  transition: var(--transition);
}

.nav-links a:hover, .nav-links a.active {
  color: var(--text-primary);
}

.btn-primary {
  background: var(--gradient-main);
  color: white;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-full);
  font-weight: 600;
  text-decoration: none;
  transition: var(--transition);
  border: none;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  box-shadow: 0 4px 14px rgba(37, 99, 235, 0.4);
}

.btn-primary:hover {
  opacity: 0.9;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(37, 99, 235, 0.6);
}

.btn-outline {
  background: transparent;
  color: var(--text-primary);
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-full);
  font-weight: 600;
  text-decoration: none;
  transition: var(--transition);
  border: 1px solid var(--border-glass);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.btn-outline:hover {
  border-color: var(--accent-blue);
  background: rgba(37, 99, 235, 0.1);
}

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 8rem 2rem 4rem;
  position: relative;
  overflow: hidden;
  background: radial-gradient(circle at 50% 20%, rgba(37, 99, 235, 0.15) 0%, transparent 60%);
}

.hero-content {
  max-width: 900px;
  text-align: center;
  z-index: 2;
}

.hero h1 {
  font-size.clamp: 2.5rem, 5vw, 4.5rem;
  font-size: clamp(2.5rem, 5vw, 4.5rem);
  font-weight: 900;
  letter-spacing: -1.5px;
  margin-bottom: 1.5rem;
  line-height: 1.1;
}

.hero h1 span {
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero p {
  font-size: 1.25rem;
  color: var(--text-secondary);
  margin-bottom: 2.5rem;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* Sections General */
section {
  padding: 6rem 2rem;
  max-width: 1280px;
  margin: 0 auto;
}

.section-header {
  text-align: center;
  margin-bottom: 4rem;
}

.section-header h2 {
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: 1rem;
  letter-spacing: -1px;
}

.section-header p {
  color: var(--text-secondary);
  font-size: 1.1rem;
  max-width: 600px;
  margin: 0 auto;
}

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

.service-card {
  padding: 2.5rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  transition: var(--transition);
}

.service-card:hover {
  border-color: var(--accent-cyan);
  transform: translateY(-5px);
}

.service-card h3 {
  font-size: 1.25rem;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.service-card p {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

/* Portfolio & Dynamic Models Catalog */
.filter-container {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 3rem;
  flex-wrap: wrap;
}

.filter-btn {
  background: var(--bg-secondary);
  border: 1px solid var(--border-glass);
  color: var(--text-secondary);
  padding: 0.5rem 1.25rem;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: var(--transition);
  font-weight: 500;
}

.filter-btn.active, .filter-btn:hover {
  background: var(--accent-blue);
  color: white;
  border-color: var(--accent-blue);
}

.models-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 2.5rem;
}

.model-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: var(--transition);
}

.model-card:hover {
  transform: translateY(-8px);
  border-color: var(--accent-blue);
  box-shadow: 0 25px 50px -12px rgba(37, 99, 235, 0.25);
}

.model-thumbnail {
  width: 100%;
  height: 220px;
  object-fit: cover;
  border-bottom: 1px solid var(--border-glass);
}

.model-body {
  padding: 2rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.model-category {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--accent-cyan);
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.model-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.model-description {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-bottom: 1.5rem;
  flex-grow: 1;
}

.model-metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.5rem;
  background: rgba(0, 0, 0, 0.2);
  padding: 1rem;
  border-radius: 8px;
  margin-bottom: 1.5rem;
  text-align: center;
}

.metric-item span:first-child {
  display: block;
  font-size: 0.75rem;
  color: var(--text-secondary);
}

.metric-item span:last-child {
  font-size: 1.1rem;
  font-weight: 700;
  color: #10b981;
}

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

.model-features-list li {
  font-size: 0.85rem;
  color: var(--text-secondary);
  padding: 0.25rem 0;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.model-features-list li::before {
  content: "✓";
  color: var(--accent-cyan);
  font-weight: bold;
}

/* Stats Section */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
  text-align: center;
  padding: 4rem 2rem;
  background: var(--bg-secondary);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-glass);
  margin: 4rem 0;
}

.stat-item h3 {
  font-size: 3rem;
  font-weight: 900;
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 0.5rem;
}

.stat-item p {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

/* Footer */
footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-glass);
  padding: 4rem 2rem 2rem;
  text-align: center;
}

.footer-content {
  max-width: 1280px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2rem;
}

.footer-brand {
  font-size: 1.5rem;
  font-weight: 800;
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.footer-credits {
  font-size: 0.85rem;
  color: var(--text-secondary);
  border-top: 1px solid var(--border-glass);
  width: 100%;
  padding-top: 2rem;
}

/* WhatsApp Floating Button */
.whatsapp-float {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  background: #25d366;
  color: white;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  box-shadow: 0 4px 12px rgba(37, 211, 102, 0.4);
  z-index: 1001;
  transition: var(--transition);
  text-decoration: none;
}

.whatsapp-float:hover {
  transform: scale(1.1);
  box-shadow: 0 6px 20px rgba(37, 211, 102, 0.6);
}

/* Responsive */
@media (max-width: 768px) {
  .nav-links {
    display: none;
  }
  .hero h1 {
    font-size: 2.2rem;
  }
}