/* ============================================
   Вектроник — Основные стили
   Безопасный статический сайт
   ============================================ */

:root {
  --color-bg: #0f1419;
  --color-surface: #18232d;
  --color-surface-light: #1e2d3a;
  --color-border: #2b3a46;
  --color-text: #f6f8f9;
  --color-text-muted: #aebbc4;
  --color-text-dim: #80919d;
  --color-accent: #f28a24;
  --color-accent-light: #ffa94d;
  --color-accent-dark: #d9740f;
  --color-success: #22c55e;
  --color-warning: #f59e0b;
  --color-error: #ef4444;
  
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
  
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.2);
  --shadow-md: 0 8px 24px rgba(0,0,0,0.3);
  --shadow-lg: 0 24px 80px rgba(0,0,0,0.4);
  
  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s ease;
  --container-max: 1200px;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

a:hover {
  color: var(--color-accent-light);
}

/* Container */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
}

@media (max-width: 768px) {
  .container {
    padding: 0 16px;
  }
}

/* ============================================
   Header
   ============================================ */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(15, 20, 25, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--color-text);
  font-weight: 700;
  font-size: 1.25rem;
}

.logo-mark {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-accent);
  color: var(--color-bg);
  font-weight: 800;
  font-size: 1.1rem;
  border-radius: var(--radius-sm);
}

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

.main-nav a {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  font-weight: 500;
  padding: 8px 0;
  position: relative;
}

.main-nav a:hover {
  color: var(--color-text);
}

.main-nav a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-accent);
  transition: width var(--transition-normal);
}

.main-nav a:hover::after {
  width: 100%;
}

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  background: none;
  border: none;
  cursor: pointer;
}

.menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text);
  transition: all var(--transition-fast);
}

@media (max-width: 768px) {
  .main-nav {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--color-surface);
    flex-direction: column;
    padding: 16px 24px;
    gap: 0;
    border-bottom: 1px solid var(--color-border);
  }
  
  .main-nav.active {
    display: flex;
  }
  
  .main-nav a {
    padding: 12px 0;
    border-bottom: 1px solid var(--color-border);
  }
  
  .main-nav a:last-child {
    border-bottom: none;
  }
  
  .menu-toggle {
    display: flex;
  }
}

/* ============================================
   Buttons
   ============================================ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
}

.btn-primary {
  background: var(--color-accent);
  color: var(--color-bg);
}

.btn-primary:hover {
  background: var(--color-accent-light);
  color: var(--color-bg);
}

.btn-secondary {
  background: transparent;
  color: var(--color-text);
  border: 1px solid var(--color-border);
}

.btn-secondary:hover {
  background: var(--color-surface-light);
  border-color: var(--color-text-muted);
}

.btn-large {
  padding: 16px 32px;
  font-size: 1rem;
}

/* ============================================
   Hero Section
   ============================================ */

.hero {
  padding: 80px 0 100px;
  background: 
    radial-gradient(ellipse 80% 60% at 80% 20%, rgba(242, 138, 36, 0.08) 0%, transparent 60%),
    radial-gradient(ellipse 60% 50% at 20% 80%, rgba(43, 58, 70, 0.4) 0%, transparent 60%),
    var(--color-bg);
}

.hero-content {
  max-width: 720px;
}

.hero-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background: rgba(242, 138, 36, 0.12);
  color: var(--color-accent-light);
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  border-radius: 999px;
  margin-bottom: 24px;
}

.hero-label::before {
  content: '';
  width: 6px;
  height: 6px;
  background: var(--color-accent);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--color-accent);
}

.hero h1 {
  font-size: clamp(2.2rem, 6vw, 3.5rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 20px;
}

.hero-subtitle {
  font-size: 1.15rem;
  color: var(--color-text-muted);
  line-height: 1.6;
  margin-bottom: 32px;
  max-width: 560px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

@media (max-width: 480px) {
  .hero {
    padding: 48px 0 64px;
  }
  
  .hero-actions {
    flex-direction: column;
  }
  
  .hero-actions .btn {
    width: 100%;
  }
}

/* ============================================
   Stats Section
   ============================================ */

.stats {
  padding: 48px 0;
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
}

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

.stat-number {
  display: block;
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--color-accent);
  margin-bottom: 4px;
}

.stat-label {
  font-size: 0.85rem;
  color: var(--color-text-dim);
}

@media (max-width: 768px) {
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
  }
  
  .stat-number {
    font-size: 1.3rem;
  }
}

/* ============================================
   Section Title
   ============================================ */

.section-title {
  font-size: 1.8rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 48px;
  letter-spacing: -0.02em;
}

/* ============================================
   Categories Section
   ============================================ */

.categories {
  padding: 80px 0;
}

.categories-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.category-card {
  display: flex;
  flex-direction: column;
  padding: 32px 24px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: all var(--transition-normal);
  color: var(--color-text);
}

.category-card:hover {
  border-color: var(--color-accent-dark);
  background: var(--color-surface-light);
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.category-icon {
  width: 48px;
  height: 48px;
  margin-bottom: 20px;
  color: var(--color-accent);
}

.category-icon svg {
  width: 100%;
  height: 100%;
}

.category-card h3 {
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 8px;
}

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

@media (max-width: 1024px) {
  .categories-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 560px) {
  .categories-grid {
    grid-template-columns: 1fr;
  }
  
  .category-card {
    padding: 24px 20px;
  }
}

/* ============================================
   Featured Products
   ============================================ */

.featured {
  padding: 80px 0;
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
}

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

.product-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition-normal);
}

.product-card:hover {
  border-color: var(--color-accent-dark);
  box-shadow: var(--shadow-md);
}

.product-image {
  aspect-ratio: 4/3;
  background: var(--color-surface-light);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-dim);
  font-size: 0.85rem;
  position: relative;
}

.product-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.product-badge {
  position: absolute;
  top: 12px;
  left: 12px;
  padding: 4px 10px;
  background: var(--color-accent);
  color: var(--color-bg);
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  border-radius: var(--radius-sm);
}

.product-info {
  padding: 20px;
}

.product-info h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.product-specs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 12px;
}

.product-spec {
  font-size: 0.8rem;
  color: var(--color-text-dim);
  padding: 2px 8px;
  background: var(--color-surface);
  border-radius: var(--radius-sm);
}

.product-price {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-accent-light);
  margin-bottom: 12px;
}

.product-price .price-note {
  font-size: 0.8rem;
  color: var(--color-text-dim);
  font-weight: 400;
}

.product-status {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8rem;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  margin-bottom: 12px;
}

.status-verified {
  background: rgba(34, 197, 94, 0.12);
  color: var(--color-success);
}

.status-review {
  background: rgba(245, 158, 11, 0.12);
  color: var(--color-warning);
}

.product-status::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
}

.section-footer {
  text-align: center;
  margin-top: 48px;
}

@media (max-width: 1024px) {
  .products-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 560px) {
  .products-grid {
    grid-template-columns: 1fr;
  }
}

/* ============================================
   Trust Section
   ============================================ */

.trust {
  padding: 80px 0;
}

.trust-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
}

.trust-item {
  padding: 24px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
}

.trust-item h4 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--color-accent-light);
}

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

@media (max-width: 1024px) {
  .trust-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 560px) {
  .trust-grid {
    grid-template-columns: 1fr;
  }
}

/* ============================================
   CTA Section
   ============================================ */

.cta-section {
  padding: 80px 0;
  text-align: center;
  background: 
    radial-gradient(ellipse 60% 50% at 50% 100%, rgba(242, 138, 36, 0.06) 0%, transparent 70%),
    var(--color-surface);
  border-top: 1px solid var(--color-border);
}

.cta-section h2 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.cta-section p {
  color: var(--color-text-muted);
  margin-bottom: 32px;
  max-width: 480px;
  margin-left: auto;
  margin-right: auto;
}

/* ============================================
   Footer
   ============================================ */

.site-footer {
  padding: 64px 0 32px;
  background: var(--color-bg);
  border-top: 1px solid var(--color-border);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 48px;
  margin-bottom: 48px;
}

.footer-col h4 {
  font-size: 0.9rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
  margin-bottom: 16px;
}

.footer-col nav {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-col nav a {
  color: var(--color-text-dim);
  font-size: 0.9rem;
}

.footer-col nav a:hover {
  color: var(--color-text);
}

.footer-desc {
  font-size: 0.9rem;
  color: var(--color-text-dim);
  margin-top: 16px;
  line-height: 1.5;
}

.footer-contact {
  font-size: 0.9rem;
  color: var(--color-text-dim);
  margin-bottom: 8px;
}

.footer-contact a {
  color: var(--color-text);
}

.footer-note {
  font-size: 0.75rem;
  color: var(--color-warning);
  margin-top: 12px;
  padding: 8px 12px;
  background: rgba(245, 158, 11, 0.08);
  border-radius: var(--radius-sm);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 24px;
  border-top: 1px solid var(--color-border);
  font-size: 0.8rem;
  color: var(--color-text-dim);
}

@media (max-width: 1024px) {
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 560px) {
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  
  .footer-bottom {
    flex-direction: column;
    gap: 12px;
    text-align: center;
  }
}

/* ============================================
   Page Header
   ============================================ */

.page-header {
  padding: 64px 0 32px;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
}

.page-header h1 {
  font-size: clamp(1.8rem, 5vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.02em;
}

.page-header p {
  color: var(--color-text-muted);
  margin-top: 8px;
}

/* ============================================
   Forms
   ============================================ */

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

.form-label {
  display: block;
  font-size: 0.9rem;
  font-weight: 500;
  margin-bottom: 6px;
  color: var(--color-text-muted);
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: 12px 16px;
  font-family: inherit;
  font-size: 1rem;
  color: var(--color-text);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: border-color var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  outline: none;
  border-color: var(--color-accent);
}

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

.form-hint {
  font-size: 0.8rem;
  color: var(--color-text-dim);
  margin-top: 4px;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

@media (max-width: 560px) {
  .form-grid {
    grid-template-columns: 1fr;
  }
}

/* ============================================
   Contact Page
   ============================================ */

.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 48px;
  padding: 48px 0 80px;
}

.contact-info h2 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 24px;
}

.contact-detail {
  margin-bottom: 24px;
}

.contact-detail h4 {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
  margin-bottom: 8px;
}

.contact-detail p {
  font-size: 1.1rem;
}

.contact-detail a {
  color: var(--color-text);
}

.contact-detail a:hover {
  color: var(--color-accent);
}

.contact-form-wrapper {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 32px;
}

.contact-form-wrapper h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 24px;
}

@media (max-width: 768px) {
  .contact-layout {
    grid-template-columns: 1fr;
  }
}

/* ============================================
   Content Pages
   ============================================ */

.content-page {
  padding: 48px 0 80px;
  max-width: 760px;
}

.content-page h2 {
  font-size: 1.5rem;
  font-weight: 700;
  margin: 32px 0 16px;
}

.content-page h3 {
  font-size: 1.2rem;
  font-weight: 600;
  margin: 24px 0 12px;
}

.content-page p {
  color: var(--color-text-muted);
  margin-bottom: 16px;
}

.content-page ul {
  margin-bottom: 16px;
  padding-left: 24px;
}

.content-page li {
  color: var(--color-text-muted);
  margin-bottom: 8px;
}

.content-page strong {
  color: var(--color-text);
  font-weight: 600;
}

/* ============================================
   Utility
   ============================================ */

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

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

.mt-48 {
  margin-top: 48px;
}