/* ========================================
   Gastrovka - Main Stylesheet
   ======================================== */

/* CSS Variables */
:root {
  --primary: #10b981;
  --primary-dark: #059669;
  --primary-light: #d1fae5;
  --secondary: #1f2937;
  --accent: #f59e0b;
  --text: #111827;
  --text-muted: #6b7280;
  --bg: #ffffff;
  --bg-alt: #f9fafb;
  --bg-dark: #111827;
  --border: #e5e7eb;
  --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
  --radius: 12px;
  --radius-lg: 16px;
  --radius-full: 9999px;
  --transition: all 0.2s ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  color: var(--primary);
  text-decoration: none;
  transition: var(--transition);
}

a:hover {
  color: var(--primary-dark);
}

/* Container */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

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

h1 { font-size: clamp(2.5rem, 5vw, 4rem); }
h2 { font-size: clamp(2rem, 4vw, 3rem); }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }

.text-gradient {
  background: linear-gradient(135deg, var(--primary) 0%, #06b6d4 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  font-size: 1rem;
  font-weight: 600;
  border-radius: var(--radius);
  border: 2px solid transparent;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
}

.btn-primary {
  background: var(--primary);
  color: white;
  border-color: var(--primary);
}

.btn-primary:hover {
  background: var(--primary-dark);
  border-color: var(--primary-dark);
  color: white;
}

.btn-outline {
  background: transparent;
  color: var(--text);
  border-color: var(--border);
}

.btn-outline:hover {
  border-color: var(--primary);
  color: var(--primary);
}

.btn-white {
  background: white;
  color: var(--primary);
  border-color: white;
}

.btn-white:hover {
  background: var(--primary-light);
  color: var(--primary-dark);
}

.btn-outline-white {
  background: transparent;
  color: white;
  border-color: rgba(255,255,255,0.3);
}

.btn-outline-white:hover {
  background: rgba(255,255,255,0.1);
  border-color: white;
  color: white;
}

.btn-lg {
  padding: 16px 32px;
  font-size: 1.125rem;
}

.btn-block {
  width: 100%;
}

/* Header */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
}

.header.scrolled {
  box-shadow: var(--shadow);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--text);
}

.logo-icon {
  font-size: 2rem;
}

.nav {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-links {
  display: flex;
  gap: 32px;
  list-style: none;
}

.nav-links a {
  color: var(--text-muted);
  font-weight: 500;
}

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

.nav-actions {
  display: flex;
  gap: 12px;
}

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
}

/* Hero Section */
.hero {
  padding: 140px 0 80px;
  background: linear-gradient(180deg, var(--bg-alt) 0%, var(--bg) 100%);
  overflow: hidden;
}

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

.hero-badge {
  display: inline-block;
  padding: 8px 16px;
  background: var(--primary-light);
  color: var(--primary-dark);
  font-size: 0.875rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  margin-bottom: 24px;
}

.hero-content h1 {
  margin-bottom: 24px;
}

.hero-description {
  font-size: 1.25rem;
  color: var(--text-muted);
  margin-bottom: 32px;
  max-width: 540px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  margin-bottom: 48px;
}

.hero-stats {
  display: flex;
  gap: 48px;
}

.stat {
  display: flex;
  flex-direction: column;
}

.stat-number {
  font-size: 2rem;
  font-weight: 800;
  color: var(--primary);
}

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

.hero-visual {
  display: flex;
  justify-content: center;
}

.hero-mockup {
  position: relative;
  width: 100%;
  max-width: 500px;
}

.mockup-screen {
  background: var(--secondary);
  border-radius: 20px;
  padding: 16px;
  box-shadow: var(--shadow-xl);
}

.mockup-header {
  height: 12px;
  background: #374151;
  border-radius: 6px;
  margin-bottom: 16px;
}

.mockup-content {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.mockup-tile {
  aspect-ratio: 1;
  background: linear-gradient(135deg, var(--primary) 0%, #06b6d4 100%);
  border-radius: 12px;
  animation: pulse 2s ease-in-out infinite;
}

.mockup-tile:nth-child(2) { animation-delay: 0.2s; }
.mockup-tile:nth-child(3) { animation-delay: 0.4s; }
.mockup-tile:nth-child(4) { animation-delay: 0.6s; background: #f59e0b; }
.mockup-tile:nth-child(5) { animation-delay: 0.8s; background: #8b5cf6; }
.mockup-tile:nth-child(6) { animation-delay: 1s; background: #ef4444; }

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.7; }
}

/* Section Styling */
section {
  padding: 100px 0;
}

.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 60px;
}

.section-badge {
  display: inline-block;
  padding: 6px 14px;
  background: var(--primary-light);
  color: var(--primary-dark);
  font-size: 0.875rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  margin-bottom: 16px;
}

.section-header h2 {
  margin-bottom: 16px;
}

.section-header p {
  font-size: 1.125rem;
  color: var(--text-muted);
}

/* Products Section */
.products {
  background: var(--bg-alt);
}

.products-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.product-card {
  background: var(--bg);
  border-radius: var(--radius-lg);
  padding: 32px;
  border: 1px solid var(--border);
  transition: var(--transition);
  position: relative;
}

.product-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.product-featured {
  border-color: var(--primary);
  box-shadow: 0 0 0 1px var(--primary);
}

.product-badge {
  position: absolute;
  top: -12px;
  left: 24px;
  padding: 6px 12px;
  background: var(--primary);
  color: white;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: var(--radius-full);
}

.product-icon {
  width: 56px;
  height: 56px;
  background: var(--bg-alt);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.75rem;
  margin-bottom: 20px;
}

.product-card h3 {
  margin-bottom: 12px;
}

.product-card > p {
  color: var(--text-muted);
  margin-bottom: 20px;
  font-size: 0.9375rem;
}

.product-features {
  list-style: none;
  margin-bottom: 24px;
}

.product-features li {
  padding: 8px 0;
  padding-left: 28px;
  position: relative;
  font-size: 0.9375rem;
  color: var(--text-muted);
}

.product-features li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--primary);
  font-weight: 600;
}

.product-price {
  margin-bottom: 20px;
}

.price-amount {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text);
}

.price-period {
  color: var(--text-muted);
}

/* Features Section */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.feature {
  text-align: center;
  padding: 32px;
}

.feature-icon {
  font-size: 2.5rem;
  margin-bottom: 16px;
}

.feature h4 {
  margin-bottom: 12px;
}

.feature p {
  color: var(--text-muted);
  font-size: 0.9375rem;
}

/* CTA Section */
.cta {
  background: linear-gradient(135deg, var(--primary) 0%, #06b6d4 100%);
  color: white;
}

.cta-content {
  text-align: center;
  max-width: 700px;
  margin: 0 auto;
}

.cta h2 {
  color: white;
  margin-bottom: 16px;
}

.cta p {
  font-size: 1.25rem;
  opacity: 0.9;
  margin-bottom: 32px;
}

.cta-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
}

/* Contact Section */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 60px;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.contact-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.contact-icon {
  font-size: 1.5rem;
}

.contact-item strong {
  display: block;
  margin-bottom: 4px;
}

.contact-item a,
.contact-item span {
  color: var(--text-muted);
}

.contact-form {
  background: var(--bg-alt);
  padding: 40px;
  border-radius: var(--radius-lg);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

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

.form-group label {
  display: block;
  font-weight: 500;
  margin-bottom: 8px;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 14px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 1rem;
  font-family: inherit;
  transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-light);
}

/* Footer */
.footer {
  background: var(--bg-dark);
  color: white;
  padding: 60px 0 30px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-brand {
  max-width: 300px;
}

.footer-brand .logo {
  color: white;
  margin-bottom: 16px;
}

.footer-brand p {
  color: #9ca3af;
  font-size: 0.9375rem;
}

.footer-col h5 {
  color: white;
  font-size: 1rem;
  margin-bottom: 20px;
}

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

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

.footer-links a {
  color: #9ca3af;
  font-size: 0.9375rem;
}

.footer-links a:hover {
  color: white;
}

.footer-bottom {
  padding-top: 30px;
  border-top: 1px solid #374151;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-bottom p {
  color: #9ca3af;
  font-size: 0.875rem;
}

.footer-social {
  display: flex;
  gap: 16px;
}

.footer-social a {
  color: #9ca3af;
  font-size: 1.25rem;
}

.footer-social a:hover {
  color: white;
}

/* Responsive */
@media (max-width: 1024px) {
  .hero .container {
    grid-template-columns: 1fr;
    text-align: center;
  }

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

  .hero-actions {
    justify-content: center;
  }

  .hero-stats {
    justify-content: center;
  }

  .hero-visual {
    display: none;
  }

  .products-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

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

@media (max-width: 768px) {
  .nav-links,
  .nav-actions {
    display: none;
  }

  .mobile-menu-btn {
    display: block;
  }

  .hero {
    padding: 120px 0 60px;
  }

  .hero-actions {
    flex-direction: column;
  }

  .hero-stats {
    flex-direction: column;
    gap: 24px;
  }

  section {
    padding: 60px 0;
  }

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

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

  .form-row {
    grid-template-columns: 1fr;
  }

  .cta-actions {
    flex-direction: column;
  }

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

  .footer-bottom {
    flex-direction: column;
    gap: 16px;
    text-align: center;
  }
}