:root {
  --primary: #f8f9fa;
  --primary-light: #e9ecef;
  --accent: #0077b6;
  --accent2: #023e8a;
  --accent-glow: rgba(0, 119, 182, 0.2);
  --text: #212529;
  --text-muted: #6c757d;
  --bg: #ffffff;
  --bg-card: #ffffff;
  --bg-card-hover: #f8f9fa;
  --border: rgba(0, 119, 182, 0.15);
  --success: #198754;
  --warning: #fd7e14;
  --danger: #dc3545;
  --radius: 12px;
  --shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
}

body::before {
  content: '';
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: url('../assets/fon.jpg') repeat;
  opacity: 0.35;
  z-index: -1;
}

a { color: var(--accent); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--accent2); }

.container { max-width: 1280px; margin: 0 auto; padding: 0 20px; }

/* HEADER */
.header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
}

.header.scrolled {
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 20px;
  max-width: 1280px;
  margin: 0 auto;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  cursor: pointer;
}

.logo-icon {
  width: 44px;
  height: 44px;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  font-weight: 900;
  color: white;
  animation: logoPulse 3s ease-in-out infinite;
}

@keyframes logoPulse {
  0%, 100% { box-shadow: 0 0 0 0 var(--accent-glow); }
  50% { box-shadow: 0 0 20px 5px var(--accent-glow); }
}

.logo-text {
  font-size: 24px;
  font-weight: 800;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav { display: flex; align-items: center; gap: 8px; }

.nav a {
  padding: 8px 16px;
  border-radius: 8px;
  color: var(--text-muted);
  font-weight: 500;
  font-size: 14px;
  transition: var(--transition);
  position: relative;
}

.nav a:hover, .nav a.active {
  color: var(--accent);
  background: rgba(0, 180, 216, 0.1);
}

.nav a::after {
  content: '';
  position: absolute;
  bottom: 0; left: 50%;
  width: 0; height: 2px;
  background: var(--accent);
  transition: var(--transition);
  transform: translateX(-50%);
}

.nav a:hover::after, .nav a.active::after { width: 60%; }

.header-contacts {
  display: flex;
  align-items: center;
  gap: 16px;
}

.header-phone {
  font-weight: 700;
  font-size: 15px;
  color: var(--text);
}

.burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
  min-width: 44px;
  min-height: 44px;
  justify-content: center;
  align-items: center;
  z-index: 1001;
}

.burger span {
  width: 24px;
  height: 2px;
  background: var(--accent);
  transition: var(--transition);
  border-radius: 2px;
}

.burger.active span:nth-child(1) {
  transform: rotate(45deg) translate(6px, 6px);
}

.burger.active span:nth-child(2) {
  opacity: 0;
}

.burger.active span:nth-child(3) {
  transform: rotate(-45deg) translate(6px, -6px);
}

/* HERO */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding-top: 70px;
}

@media (max-width: 768px) {
  .hero {
    min-height: 80vh;
    padding-top: 62px;
  }
}

@media (max-width: 576px) {
  .hero {
    min-height: 70vh;
    padding-top: 58px;
  }
}

.hero-bg {
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.85), rgba(0, 119, 182, 0.15)),
              url('../assets/magazin.jpg') center/cover;
  z-index: -1;
}

.hero-bg::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 200px;
  background: linear-gradient(transparent, var(--bg));
}

.hero-content {
  max-width: 700px;
  animation: fadeInUp 1s ease-out;
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(40px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes slideInLeft {
  from { opacity: 0; transform: translateX(-40px); }
  to { opacity: 1; transform: translateX(0); }
}

@keyframes slideInRight {
  from { opacity: 0; transform: translateX(40px); }
  to { opacity: 1; transform: translateX(0); }
}

@keyframes scaleIn {
  from { opacity: 0; transform: scale(0.9); }
  to { opacity: 1; transform: scale(1); }
}

.hero h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 900;
  line-height: 1.1;
  margin-bottom: 20px;
  background: linear-gradient(135deg, var(--text) 30%, var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p {
  font-size: 1.2rem;
  color: var(--text-muted);
  margin-bottom: 32px;
  max-width: 550px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: 10px;
  font-weight: 700;
  font-size: 15px;
  border: none;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  color: #fff;
  box-shadow: 0 4px 20px var(--accent-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px var(--accent-glow);
  color: #fff;
}

.btn-outline {
  background: transparent;
  color: var(--accent);
  border: 2px solid var(--accent);
}

.btn-outline:hover {
  background: rgba(0, 180, 216, 0.1);
  transform: translateY(-2px);
  color: var(--accent);
}

.btn-sm { padding: 8px 20px; font-size: 13px; }

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

/* STATS */
.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 20px;
  margin-top: 60px;
}

.stat-card {
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  text-align: center;
  transition: var(--transition);
}

.stat-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent);
  box-shadow: 0 8px 30px var(--accent-glow);
}

.stat-number {
  font-size: 2.5rem;
  font-weight: 900;
  color: var(--accent);
  display: block;
}

.stat-label {
  font-size: 14px;
  color: var(--text-muted);
  margin-top: 4px;
}

/* SECTIONS */
.section {
  padding: 80px 0;
}

.section:nth-child(even) {
  background: rgba(0, 119, 182, 0.03);
}

.section-title {
  font-size: 2.2rem;
  font-weight: 800;
  text-align: center;
  margin-bottom: 16px;
  background: linear-gradient(135deg, var(--text), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-subtitle {
  text-align: center;
  color: var(--text-muted);
  font-size: 1.1rem;
  margin-bottom: 48px;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

/* CATALOG */
.catalog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}

.category-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 24px;
  text-align: center;
  transition: var(--transition);
  cursor: pointer;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow);
}

.category-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  transform: scaleX(0);
  transition: var(--transition);
}

.category-card:hover::before { transform: scaleX(1); }

.category-card:hover {
  transform: translateY(-6px);
  border-color: var(--accent);
  box-shadow: var(--shadow), 0 0 30px var(--accent-glow);
}

.category-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 16px;
  background: linear-gradient(135deg, rgba(0, 180, 216, 0.2), rgba(0, 119, 182, 0.1));
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
}

.category-card-image {
  width: 100%;
  height: 180px;
  margin-bottom: 16px;
  border-radius: 8px;
  overflow: hidden;
  background: #f8f9fa;
}

.category-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition);
}

.category-card:hover .category-card-image img {
  transform: scale(1.1);
}

.category-text-block {
  margin-top: 48px;
  padding: 32px;
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  color: var(--text);
  line-height: 1.8;
  font-size: 15px;
}

.category-text-block p {
  margin-bottom: 16px;
}

.category-text-block p:last-child {
  margin-bottom: 0;
}

.category-text-block strong {
  color: #1a2d4a;
  font-weight: 700;
}

@media (max-width: 768px) {
  .category-text-block {
    margin-top: 32px;
    padding: 20px;
    font-size: 14px;
    line-height: 1.7;
  }
  
  .category-text-block p {
    margin-bottom: 12px;
  }
}

@media (max-width: 576px) {
  .category-text-block {
    margin-top: 24px;
    padding: 16px;
    font-size: 13px;
    line-height: 1.6;
  }
}

.category-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text);
}

.category-card p {
  font-size: 13px;
  color: var(--text-muted);
}

.category-count {
  display: inline-block;
  margin-top: 12px;
  padding: 4px 12px;
  background: rgba(0, 180, 216, 0.1);
  border-radius: 20px;
  font-size: 12px;
  color: var(--accent);
  font-weight: 600;
}

/* PRODUCTS */
.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 20px;
}

.product-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: var(--transition);
  cursor: pointer;
  box-shadow: var(--shadow);
}

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

.product-img {
  width: 100%;
  height: 220px;
  object-fit: contain;
  background: #f8f9fa;
  padding: 16px;
  transition: var(--transition);
}

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

.product-info {
  padding: 16px;
}

.product-info h3 {
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 8px;
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.product-price {
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--accent);
}

.product-price-old {
  font-size: 14px;
  color: var(--text-muted);
  text-decoration: line-through;
  margin-left: 8px;
}

.product-actions {
  display: flex;
  gap: 8px;
  margin-top: 12px;
}

@media (max-width: 576px) {
  .product-actions {
    flex-direction: column;
    gap: 8px;
  }
  
  .product-actions .btn {
    width: 100%;
    justify-content: center;
  }
}

/* PRODUCT DETAIL */
.product-detail {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  padding: 40px 0;
}

@media (max-width: 1024px) {
  .product-detail {
    grid-template-columns: 1fr;
    gap: 24px;
    padding: 24px 0;
  }
}

@media (max-width: 768px) {
  .product-detail {
    gap: 20px;
    padding: 20px 0;
  }
  
  .product-detail-info h1 {
    font-size: 1.5rem;
    margin-bottom: 12px;
  }
  
  .product-detail-price {
    font-size: 1.75rem;
    margin-bottom: 16px;
  }
  
  .product-detail-text {
    font-size: 14px;
    line-height: 1.7;
  }
}

@media (max-width: 576px) {
  .product-detail {
    gap: 16px;
    padding: 16px 0;
  }
  
  .product-detail-info h1 {
    font-size: 1.3rem;
  }
  
  .product-detail-price {
    font-size: 1.5rem;
  }
  
  .product-detail-text {
    font-size: 13px;
    line-height: 1.6;
  }
}

.product-gallery {
  position: relative;
}

.product-main-img {
  width: 100%;
  border-radius: var(--radius);
  background: #f8f9fa;
  border: 1px solid var(--border);
  padding: 20px;
  aspect-ratio: 1;
  object-fit: contain;
}

.product-thumbs {
  display: flex;
  gap: 8px;
  margin-top: 12px;
  flex-wrap: wrap;
}

.product-thumb {
  width: 64px;
  height: 64px;
  border-radius: 8px;
  object-fit: contain;
  background: #f8f9fa;
  border: 2px solid transparent;
  cursor: pointer;
  padding: 4px;
  transition: var(--transition);
}

.product-thumb:hover, .product-thumb.active {
  border-color: var(--accent);
}

.product-detail-info h1 {
  font-size: 1.8rem;
  font-weight: 800;
  margin-bottom: 16px;
  color: var(--text);
}

.product-detail-price {
  font-size: 2rem;
  font-weight: 900;
  color: var(--accent);
  margin-bottom: 24px;
}

.product-detail-text {
  color: var(--text-muted);
  line-height: 1.8;
  margin-bottom: 32px;
}

.product-detail-text p { margin-bottom: 12px; }
.product-detail-text strong { color: var(--text); }

/* BREADCRUMBS */
.breadcrumbs {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 20px 0;
  margin-top: 70px;
  font-size: 13px;
  color: var(--text-muted);
  flex-wrap: wrap;
}

.breadcrumbs a { color: var(--text-muted); }
.breadcrumbs a:hover { color: var(--accent); }
.breadcrumbs span { color: var(--text-muted); }

@media (max-width: 768px) {
  .breadcrumbs {
    margin-top: 62px;
    padding: 16px 0;
    font-size: 12px;
    gap: 6px;
  }
}

@media (max-width: 576px) {
  .breadcrumbs {
    font-size: 11px;
    gap: 4px;
    padding: 12px 0;
  }
  
  .breadcrumbs a {
    padding: 4px 0;
  }
}

/* SIDEBAR */
.catalog-layout {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 32px;
  padding: 40px 0;
}

.sidebar {
  position: sticky;
  top: 90px;
  align-self: start;
}

.sidebar-menu {
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}

@media (max-width: 1024px) {
  .sidebar-menu {
    max-height: 300px;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
  }
}

@media (max-width: 768px) {
  .sidebar-menu {
    max-height: 250px;
  }
  
  .sidebar-item {
    padding: 12px 16px;
    font-size: 13px;
  }
  
  .sidebar-sub .sidebar-item {
    padding: 10px 16px;
    font-size: 12px;
  }
}

.sidebar-item {
  display: block;
  padding: 14px 20px;
  color: var(--text-muted);
  font-size: 14px;
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
  cursor: pointer;
}

.sidebar-item:hover, .sidebar-item.active {
  background: rgba(0, 180, 216, 0.1);
  color: var(--accent);
  padding-left: 28px;
}

.sidebar-sub {
  padding-left: 16px;
}

.sidebar-sub .sidebar-item {
  font-size: 13px;
  padding: 10px 20px;
}

/* FEATURES SECTION */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  transition: var(--transition);
  box-shadow: var(--shadow);
}

.feature-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent);
}

.feature-icon {
  width: 56px;
  height: 56px;
  background: linear-gradient(135deg, rgba(0, 180, 216, 0.2), rgba(0, 119, 182, 0.1));
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  margin-bottom: 16px;
}

.feature-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text);
}

.feature-card p {
  font-size: 14px;
  color: var(--text-muted);
}

/* WAREHOUSE SECTION */
.warehouse-section {
  position: relative;
  overflow: hidden;
}

.warehouse-bg {
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: url('../assets/sklad.jpg') center/cover;
  opacity: 0.1;
}

.warehouse-content {
  position: relative;
  z-index: 1;
}

/* CTA SECTION */
.cta-section {
  background: linear-gradient(135deg, var(--primary-light), rgba(0, 119, 182, 0.1));
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 60px;
  text-align: center;
  margin: 40px 0;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow);
}

.cta-section::before {
  content: '';
  position: absolute;
  top: -50%; right: -50%;
  width: 100%; height: 100%;
  background: radial-gradient(circle, var(--accent-glow), transparent);
  animation: ctaGlow 6s ease-in-out infinite;
}

@keyframes ctaGlow {
  0%, 100% { transform: translate(0, 0); }
  50% { transform: translate(-20%, 20%); }
}

.cta-section h2 {
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: 16px;
  position: relative;
  color: var(--text);
}

.cta-section p {
  color: var(--text-muted);
  margin-bottom: 32px;
  position: relative;
}

.cta-section .btn { position: relative; }

/* FOOTER */
.footer {
  background: #1a2d4a;
  border-top: 1px solid var(--border);
  padding: 60px 0 30px;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 40px;
  margin-bottom: 40px;
}

.footer-col h4 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 16px;
  color: #ffffff;
}

.footer-col a {
  display: block;
  color: rgba(255, 255, 255, 0.7);
  font-size: 14px;
  padding: 4px 0;
}

.footer-col a:hover {
  color: #ffffff;
}

.footer-col p {
  color: rgba(255, 255, 255, 0.7);
  font-size: 14px;
  line-height: 1.8;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 24px;
  text-align: center;
  color: rgba(255, 255, 255, 0.5);
  font-size: 13px;
}

@media (max-width: 768px) {
  .footer {
    padding: 40px 0 20px;
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  
  .footer-col h4 {
    font-size: 15px;
    margin-bottom: 12px;
  }
  
  .footer-col p, .footer-col a {
    font-size: 13px;
    padding: 3px 0;
  }
  
  .footer-bottom {
    padding-top: 16px;
    font-size: 12px;
  }
}

/* SEARCH */
.search-box {
  position: relative;
  max-width: 500px;
  margin: 0 auto 32px;
}

.search-box input {
  width: 100%;
  padding: 14px 20px 14px 48px;
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: 12px;
  color: var(--text);
  font-size: 15px;
  outline: none;
  transition: var(--transition);
  box-shadow: var(--shadow);
}

.search-box input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 20px var(--accent-glow);
}

.search-box::before {
  content: '🔍';
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 18px;
}

/* PAGINATION */
.pagination {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 40px;
}

.pagination button {
  padding: 10px 16px;
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  cursor: pointer;
  transition: var(--transition);
}

.pagination button:hover, .pagination button.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

/* LOADING */
.loading {
  display: flex;
  justify-content: center;
  padding: 60px;
}

.spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* SCROLL ANIMATIONS */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.animate-on-scroll.visible {
  opacity: 1;
  transform: translateY(0);
}

/* MOBILE NAV */
.mobile-nav {
  display: none;
  position: fixed;
  top: 70px; left: 0; right: 0; bottom: 0;
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(20px);
  z-index: 999;
  padding: 20px;
  flex-direction: column;
  gap: 8px;
  overflow-y: auto;
}

.mobile-nav.open { display: flex; }

.mobile-nav a {
  padding: 14px 20px;
  color: var(--text);
  font-size: 16px;
  border-radius: 8px;
  transition: var(--transition);
  min-height: 48px;
  display: flex;
  align-items: center;
}

.mobile-nav a:hover {
  background: rgba(0, 119, 182, 0.1);
  color: var(--accent);
}

@media (max-width: 768px) {
  .mobile-nav { top: 62px; }
  .mobile-nav a { padding: 16px 20px; font-size: 17px; }
}

/* BACK TO TOP */
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 20px;
  cursor: pointer;
  opacity: 0;
  transform: translateY(20px);
  transition: var(--transition);
  z-index: 100;
  border: none;
  box-shadow: 0 4px 20px var(--accent-glow);
}

.back-to-top.visible {
  opacity: 1;
  transform: translateY(0);
}

.back-to-top:hover {
  transform: translateY(-4px);
}

@media (max-width: 768px) {
  .back-to-top {
    bottom: 20px;
    right: 20px;
    width: 44px;
    height: 44px;
    font-size: 18px;
  }
}

@media (max-width: 576px) {
  .back-to-top {
    bottom: 16px;
    right: 16px;
    width: 40px;
    height: 40px;
    font-size: 16px;
  }
}

/* ADMIN */
.admin-layout {
  display: grid;
  grid-template-columns: 240px 1fr;
  min-height: 100vh;
  padding-top: 70px;
}

@media (max-width: 1024px) {
  .admin-layout {
    grid-template-columns: 1fr;
  }
  
  .admin-sidebar {
    display: none;
  }
}

@media (max-width: 768px) {
  .admin-layout {
    padding-top: 62px;
  }
}

@media (max-width: 576px) {
  .admin-layout {
    padding-top: 58px;
  }
}

.admin-sidebar {
  background: #ffffff;
  border-right: 1px solid var(--border);
  padding: 20px 0;
}

.admin-sidebar a {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 24px;
  color: var(--text-muted);
  font-size: 14px;
  transition: var(--transition);
}

.admin-sidebar a:hover, .admin-sidebar a.active {
  background: rgba(0, 180, 216, 0.1);
  color: var(--accent);
  border-right: 3px solid var(--accent);
}

.admin-content {
  padding: 32px;
}

.admin-table {
  width: 100%;
  border-collapse: collapse;
}

.admin-table th, .admin-table td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--border);
  font-size: 14px;
}

.admin-table th {
  background: var(--primary-light);
  color: var(--accent);
  font-weight: 600;
  position: sticky;
  top: 0;
}

.admin-table tr:hover td {
  background: rgba(0, 180, 216, 0.05);
}

@media (max-width: 768px) {
  .admin-table {
    display: block;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }
  
  .admin-table th, .admin-table td {
    white-space: nowrap;
    padding: 10px 12px;
    font-size: 13px;
  }
}

.admin-form {
  max-width: 700px;
}

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

.form-group label {
  display: block;
  margin-bottom: 6px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
}

.form-group input, .form-group textarea, .form-group select {
  width: 100%;
  padding: 12px 16px;
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-size: 14px;
  outline: none;
  transition: var(--transition);
}

.form-group input:focus, .form-group textarea:focus {
  border-color: var(--accent);
}

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

@media (max-width: 768px) {
  .form-group {
    margin-bottom: 16px;
  }
  
  .form-group label {
    font-size: 13px;
    margin-bottom: 4px;
  }
  
  .form-group input, .form-group textarea, .form-group select {
    padding: 10px 14px;
    font-size: 16px;
  }
  
  .form-group textarea {
    min-height: 100px;
  }
}

.admin-card {
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  margin-bottom: 20px;
  box-shadow: var(--shadow);
}

.admin-card h3 {
  font-size: 1.1rem;
  margin-bottom: 16px;
  color: var(--text);
}

.admin-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 16px;
  margin-bottom: 32px;
}

.admin-stat {
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  text-align: center;
  box-shadow: var(--shadow);
}

.admin-stat .number {
  font-size: 2rem;
  font-weight: 900;
  color: var(--accent);
}

.admin-stat .label {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 4px;
}

.badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 20px;
  font-size: 11px;
  font-weight: 600;
}

.badge-success { background: rgba(0, 200, 83, 0.15); color: var(--success); }
.badge-warning { background: rgba(255, 145, 0, 0.15); color: var(--warning); }
.badge-danger { background: rgba(255, 23, 68, 0.15); color: var(--danger); }

.toast {
  position: fixed;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background: #ffffff;
  border: 1px solid var(--accent);
  border-radius: 12px;
  padding: 14px 28px;
  color: var(--text);
  font-size: 14px;
  z-index: 10000;
  transition: var(--transition);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.15);
}

.toast.show {
  transform: translateX(-50%) translateY(0);
}

/* RESPONSIVE */
@media (max-width: 1024px) {
  .catalog-layout {
    grid-template-columns: 1fr;
  }
  .sidebar { position: static; }
  .product-detail { grid-template-columns: 1fr; }
  .admin-layout { grid-template-columns: 1fr; }
  .admin-sidebar { display: none; }
  .container { padding: 0 16px; }
}

@media (max-width: 768px) {
  .nav { display: none; }
  .header-contacts { display: none; }
  .burger { display: flex; }
  
  .hero h1 { font-size: 2rem; }
  .hero p { font-size: 1rem; }
  .hero-content { max-width: 100%; }
  
  .stats { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .stat-card { padding: 16px; }
  .stat-number { font-size: 2rem; }
  
  .cta-section { padding: 40px 24px; }
  .section { padding: 50px 0; }
  
  .section-title { font-size: 1.8rem; }
  .section-subtitle { font-size: 1rem; }
  
  .catalog-grid { grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 16px; }
  .products-grid { grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 16px; }
  .features-grid { grid-template-columns: 1fr; gap: 16px; }
  
  .footer-grid { grid-template-columns: 1fr; gap: 24px; }
  
  .product-detail { gap: 24px; }
  .product-main-img { padding: 12px; }
  .product-thumbs { gap: 6px; }
  .product-thumb { width: 56px; height: 56px; }
  
  .category-card { padding: 24px 16px; }
  .category-card-image { height: 150px; }
  
  .search-box { max-width: 100%; }
  .search-box input { padding: 12px 16px 12px 44px; font-size: 14px; }
  
  .breadcrumbs { font-size: 12px; padding: 16px 0; }
  
  .btn { padding: 12px 24px; font-size: 14px; }
  .btn-sm { padding: 8px 16px; font-size: 12px; }
  
  .admin-content { padding: 16px; }
  .admin-form { max-width: 100%; }
  .admin-stats { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .admin-stat { padding: 16px; }
  .admin-stat .number { font-size: 1.5rem; }
  
  .admin-table { font-size: 13px; }
  .admin-table th, .admin-table td { padding: 8px 12px; }
  
  .feature-card { padding: 24px; }
  .feature-icon { width: 48px; height: 48px; font-size: 20px; }
  
  .logo-text { font-size: 20px; }
  .logo-icon { width: 38px; height: 38px; font-size: 18px; }
  
  .header-inner { padding: 10px 16px; }
}

@media (max-width: 576px) {
  .hero h1 { font-size: 1.75rem; }
  .hero p { font-size: 0.95rem; }
  
  .stats { grid-template-columns: 1fr; gap: 12px; }
  
  .section-title { font-size: 1.5rem; }
  .section-subtitle { font-size: 0.9rem; margin-bottom: 32px; }
  
  .catalog-grid { grid-template-columns: 1fr; }
  .products-grid { grid-template-columns: 1fr; }
  
  .product-card { max-width: 100%; }
  .product-img { height: 200px; }
  .product-info h3 { font-size: 13px; }
  .product-price { font-size: 1.1rem; }
  
  .product-detail-info h1 { font-size: 1.5rem; }
  .product-detail-price { font-size: 1.5rem; }
  
  .category-card-image { height: 180px; }
  
  .cta-section { padding: 32px 20px; }
  .cta-section h2 { font-size: 1.5rem; }
  
  .btn { padding: 12px 20px; font-size: 14px; width: 100%; justify-content: center; }
  .hero-buttons { flex-direction: column; gap: 12px; }
  .hero-buttons .btn { width: 100%; }
  
  .admin-stats { grid-template-columns: 1fr; }
  .admin-card { padding: 16px; }
  
  .admin-table { display: block; overflow-x: auto; white-space: nowrap; }
  
  .toast { bottom: 20px; padding: 12px 20px; font-size: 13px; max-width: 90%; }
  
  .category-text-block { padding: 20px; font-size: 14px; }
  
  .footer-col h4 { font-size: 15px; }
  .footer-col p, .footer-col a { font-size: 13px; }
}

@media (max-width: 400px) {
  .container { padding: 0 12px; }
  
  .hero h1 { font-size: 1.5rem; }
  .hero p { font-size: 0.9rem; }
  
  .section { padding: 40px 0; }
  .section-title { font-size: 1.3rem; }
  
  .product-img { height: 180px; padding: 12px; }
  .product-info { padding: 12px; }
  
  .category-card { padding: 20px 12px; }
  .category-card h3 { font-size: 1rem; }
  
  .feature-card { padding: 20px; }
  .feature-card h3 { font-size: 1rem; }
  
  .logo-text { font-size: 18px; }
  .logo-icon { width: 34px; height: 34px; font-size: 16px; }
  
  .header-inner { padding: 8px 12px; }
  
  .btn { padding: 10px 16px; font-size: 13px; }
  
  .admin-content { padding: 12px; }
  .admin-card { padding: 12px; }
}

/* Touch-friendly improvements */
@media (hover: none) and (pointer: coarse) {
  .btn { min-height: 44px; }
  .nav a { min-height: 44px; display: flex; align-items: center; }
  .sidebar-item { min-height: 44px; display: flex; align-items: center; }
  .product-card { cursor: pointer; }
  .category-card { cursor: pointer; }
  
  input, textarea, select { font-size: 16px !important; }
  
  .product-thumb { width: 60px; height: 60px; }
  .product-thumb:hover, .product-thumb.active { border-width: 3px; }
}

/* Image optimization */
img {
  max-width: 100%;
  height: auto;
}

.product-img, .product-main-img, .category-card-image img {
  image-rendering: -webkit-optimize-contrast;
}

/* Prevent horizontal scroll */
html, body {
  overflow-x: hidden;
  width: 100%;
}

/* Smooth scrolling for iOS */
.sidebar-menu, .mobile-nav, .admin-sidebar {
  -webkit-overflow-scrolling: touch;
}

/* Better tap targets */
a, button, .btn, .product-card, .category-card {
  -webkit-tap-highlight-color: rgba(0, 119, 182, 0.2);
}

/* Prevent zoom on input focus (iOS) */
@media (max-width: 768px) {
  input[type="text"],
  input[type="email"],
  input[type="tel"],
  input[type="number"],
  input[type="password"],
  textarea,
  select {
    font-size: 16px;
  }
}