/* ===== GLOBAL RESET & BASE STYLES ===== */
*, *::before, *::after { 
  box-sizing: border-box; 
  margin: 0; 
  padding: 0; 
}

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

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  color: #1a1a2e;
  background: #ffffff;
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a { 
  text-decoration: none; 
  color: inherit; 
  transition: all 0.3s ease;
}

ul { 
  list-style: none; 
}

/* ===== CSS VARIABLES ===== */
:root {
  --orange: #F97316;
  --orange-dark: #EA580C;
  --orange-light: #FED7AA;
  --green: #16A34A;
  --blue: #2563EB;
  --dark: #0F172A;
  --dark-2: #1E293B;
  --gray: #64748B;
  --gray-light: #F1F5F9;
  --white: #FFFFFF;
  --radius: 16px;
  --shadow: 0 4px 24px rgba(0,0,0,0.08);
  --shadow-lg: 0 12px 48px rgba(0,0,0,0.14);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===== CONTAINER ===== */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== NAVBAR - FIXED ===== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 16px 0;
  background: rgba(15, 23, 42, 0.98);
  backdrop-filter: blur(12px);
  box-shadow: 0 2px 20px rgba(0,0,0,0.1);
  transition: var(--transition);
}

.navbar.scrolled {
  padding: 12px 0;
  box-shadow: 0 4px 30px rgba(0,0,0,0.15);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.logo-image {
  height: 50px;
  width: auto;
  object-fit: contain;
  transition: var(--transition);
}

.navbar.scrolled .logo-image {
  height: 42px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-left: auto;
}

.nav-links a {
  color: rgba(255,255,255,0.85);
  font-size: 14px;
  font-weight: 500;
  padding: 10px 16px;
  border-radius: 8px;
  transition: var(--transition);
}

.nav-links a:hover {
  color: var(--orange);
  background: rgba(249, 115, 22, 0.1);
}

/* ===== MAIN CONTENT - ADD TOP PADDING FOR FIXED NAVBAR ===== */
main {
  padding-top: 80px;
}

/* ===== HERO SECTION ===== */
.hero {
  position: relative;
  min-height: 600px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #0F172A 0%, #1E293B 100%);
  color: white;
  overflow: hidden;
  padding: 60px 24px;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1200 600"><defs><pattern id="grid" width="40" height="40" patternUnits="userSpaceOnUse"><path d="M 40 0 L 0 0 0 40" fill="none" stroke="rgba(255,255,255,0.05)" stroke-width="1"/></pattern></defs><rect width="1200" height="600" fill="url(%23grid)"/></svg>');
  opacity: 0.5;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 800px;
  text-align: center;
}

.hero h1 {
  font-size: clamp(32px, 5vw, 56px);
  font-weight: 800;
  margin-bottom: 20px;
  line-height: 1.2;
}

.hero p {
  font-size: clamp(16px, 2vw, 20px);
  color: rgba(255,255,255,0.85);
  margin-bottom: 40px;
  line-height: 1.6;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 30px;
  margin-top: 50px;
  padding-top: 40px;
  border-top: 1px solid rgba(255,255,255,0.1);
}

.stat-item {
  text-align: center;
}

.stat-number {
  font-size: 32px;
  font-weight: 800;
  color: var(--orange);
  margin-bottom: 8px;
}

.stat-label {
  font-size: 14px;
  color: rgba(255,255,255,0.7);
}

/* ===== BREADCRUMBS ===== */
.breadcrumbs {
  padding: 16px 0;
  font-size: 13px;
  color: var(--gray);
  background: var(--gray-light);
}

.breadcrumbs a {
  color: var(--blue);
  margin: 0 4px;
}

.breadcrumbs a:hover {
  text-decoration: underline;
}

/* ===== PRODUCTS SECTION ===== */
.products {
  padding: 80px 24px;
  background: var(--gray-light);
}

.section-header {
  text-align: center;
  margin-bottom: 60px;
}

.section-header h2 {
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 800;
  margin-bottom: 16px;
  color: var(--dark);
}

.section-header p {
  font-size: 16px;
  color: var(--gray);
  max-width: 600px;
  margin: 0 auto;
}

.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin-bottom: 40px;
}

.product-card {
  background: white;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.product-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
}

.product-image {
  width: 100%;
  height: 220px;
  object-fit: cover;
  background: var(--gray-light);
}

.product-content {
  padding: 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.product-name {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--dark);
}

.product-description {
  font-size: 14px;
  color: var(--gray);
  margin-bottom: 16px;
  flex: 1;
  line-height: 1.6;
}

.product-specs {
  font-size: 13px;
  color: var(--gray);
  margin-bottom: 16px;
  padding: 12px;
  background: var(--gray-light);
  border-radius: 8px;
  line-height: 1.8;
}

.product-button {
  display: inline-block;
  background: var(--orange);
  color: white;
  padding: 10px 16px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 14px;
  text-align: center;
  transition: var(--transition);
}

.product-button:hover {
  background: var(--orange-dark);
  transform: scale(1.05);
}

/* ===== FEATURES SECTION ===== */
.features {
  padding: 80px 24px;
  background: white;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 40px;
}

.feature-item {
  text-align: center;
}

.feature-icon {
  width: 60px;
  height: 60px;
  margin: 0 auto 20px;
  background: linear-gradient(135deg, var(--orange), var(--orange-dark));
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 32px;
}

.feature-title {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--dark);
}

.feature-description {
  font-size: 14px;
  color: var(--gray);
  line-height: 1.6;
}

/* ===== ABOUT SECTION ===== */
.about {
  padding: 80px 24px;
  background: var(--gray-light);
}

.about-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.about-text h2 {
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 800;
  margin-bottom: 24px;
  color: var(--dark);
}

.about-text p {
  font-size: 15px;
  color: var(--gray);
  margin-bottom: 16px;
  line-height: 1.8;
}

.about-image {
  width: 100%;
  height: 400px;
  object-fit: cover;
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
}

@media (max-width: 768px) {
  .about-content {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  
  .about-image {
    height: 300px;
  }
}

/* ===== CONTACT FORM ===== */
.contact-form {
  max-width: 600px;
  margin: 0 auto;
  padding: 40px;
  background: white;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.form-group {
  margin-bottom: 24px;
}

.form-group label {
  display: block;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--dark);
  font-size: 14px;
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 12px 16px;
  border: 2px solid var(--gray-light);
  border-radius: 8px;
  font-size: 14px;
  font-family: inherit;
  transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--orange);
  box-shadow: 0 0 0 3px rgba(249, 115, 22, 0.1);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

.form-button {
  width: 100%;
  padding: 14px;
  background: var(--orange);
  color: white;
  border: none;
  border-radius: 8px;
  font-weight: 700;
  font-size: 16px;
  cursor: pointer;
  transition: var(--transition);
}

.form-button:hover {
  background: var(--orange-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

.form-button:disabled {
  background: var(--gray);
  cursor: not-allowed;
  transform: none;
}

/* ===== FOOTER ===== */
footer {
  background: var(--dark);
  color: rgba(255,255,255,0.85);
  padding: 60px 24px 30px;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 40px;
  margin-bottom: 40px;
}

.footer-section h3 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 20px;
  color: white;
}

.footer-section ul li {
  margin-bottom: 12px;
}

.footer-section a {
  color: rgba(255,255,255,0.7);
  transition: var(--transition);
}

.footer-section a:hover {
  color: var(--orange);
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 30px;
  text-align: center;
  font-size: 14px;
  color: rgba(255,255,255,0.6);
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 768px) {
  .nav-links {
    gap: 4px;
  }
  
  .nav-links a {
    padding: 8px 12px;
    font-size: 13px;
  }
  
  .hero {
    min-height: 500px;
    padding: 40px 24px;
  }
  
  .hero-stats {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin-top: 30px;
  }
  
  .products {
    padding: 60px 24px;
  }
  
  .products-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  
  .features {
    padding: 60px 24px;
  }
  
  .features-grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }
  
  .about {
    padding: 60px 24px;
  }
  
  .contact-form {
    padding: 24px;
  }
  
  footer {
    padding: 40px 24px 20px;
  }
  
  .footer-content {
    gap: 30px;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 16px;
  }
  
  .nav-container {
    padding: 0 16px;
    gap: 16px;
  }
  
  .hero h1 {
    font-size: 28px;
  }
  
  .hero p {
    font-size: 16px;
  }
  
  .section-header h2 {
    font-size: 24px;
  }
  
  .products-grid {
    grid-template-columns: 1fr;
  }
  
  .hero-stats {
    grid-template-columns: 1fr;
  }
}

/* ===== UTILITY CLASSES ===== */
.text-center { text-align: center; }
.text-orange { color: var(--orange); }
.bg-light { background: var(--gray-light); }
.rounded { border-radius: var(--radius); }
.shadow { box-shadow: var(--shadow); }
.shadow-lg { box-shadow: var(--shadow-lg); }

/* ===== ANIMATIONS ===== */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes slideUp {
  from { 
    opacity: 0;
    transform: translateY(20px);
  }
  to { 
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in {
  animation: fadeIn 0.6s ease-out;
}

.slide-up {
  animation: slideUp 0.6s ease-out;
}