/* Modern Clean UI Styles */
:root {
  --bg-primary: #000000;
  --bg-secondary: #111111;
  --bg-card: #1a1a1a;
  --text-primary: #ffffff;
  --text-secondary: #cccccc;
  --accent-blue: #007bff;
  --accent-blue-hover: #0056b3;
  --border-color: #333333;
  --shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
  --shadow-hover: 0 8px 30px rgba(0, 0, 0, 0.5);
  --radius: 12px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  -webkit-tap-highlight-color: transparent;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}

/* Navigation */
header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(0, 0, 0, 0.95);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-color);
  z-index: 1000;
  padding: 1rem 2rem;
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  min-height: 60px;
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  text-decoration: none;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  flex-shrink: 0;
}

.logo:hover {
  color: var(--accent-blue);
  transition: var(--transition);
}

nav {
  display: flex;
  gap: 2rem;
  align-items: center;
  justify-content: center;
  flex: 1;
  max-width: 400px;
}

nav a {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  padding: 0.5rem 1rem;
  border-radius: var(--radius);
  transition: var(--transition);
  position: relative;
  white-space: nowrap;
}

nav a:hover,
nav a.active {
  color: var(--accent-blue);
  background: rgba(0, 123, 255, 0.1);
}

/* Categories Dropdown */
.categories-dropdown {
  position: relative;
}

.categories-btn {
  background: none;
  border: none;
  color: var(--text-secondary);
  font-weight: 500;
  padding: 0.5rem 1rem;
  border-radius: var(--radius);
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.categories-btn:hover {
  color: var(--accent-blue);
  background: rgba(0, 123, 255, 0.1);
}

.categories-btn::after {
  content: '';
  display: inline-block;
  width: 0;
  height: 0;
  margin-left: 0.25rem;
  border-left: 6px solid transparent;
  border-right: 6px solid transparent;
  border-top: 6px solid var(--text-secondary);
  transition: transform 0.3s ease, border-top-color 0.3s ease;
}

.categories-menu {
  position: absolute;
  top: 100%;
  left: 0;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  min-width: 200px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all 0.3s ease;
  z-index: 1001;
}

.categories-menu.active {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.categories-menu a {
  display: block;
  padding: 0.75rem 1rem;
  color: var(--text-secondary);
  text-decoration: none;
  transition: var(--transition);
  border-bottom: 1px solid var(--border-color);
}

.categories-menu a:last-child {
  border-bottom: none;
}

.categories-menu a:hover {
  color: var(--accent-blue);
  background: rgba(0, 123, 255, 0.05);
}

/* Hamburger Menu */
.hamburger {
  display: none;
  flex-direction: column;
  cursor: pointer;
  gap: 4px;
  padding: 0.5rem;
  border-radius: var(--radius);
  transition: var(--transition);
}

.hamburger:hover {
  background: rgba(255, 255, 255, 0.1);
}

.hamburger span {
  width: 25px;
  height: 3px;
  background: var(--text-primary);
  transition: var(--transition);
  transform-origin: center;
}

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

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

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

/* Main Content */
main {
  margin-top: 80px;
  min-height: calc(100vh - 160px);
}

/* Hero Section */
.hero {
  text-align: center;
  padding: 4rem 2rem;
  background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at 30% 20%, rgba(0, 123, 255, 0.1) 0%, transparent 50%),
              radial-gradient(circle at 70% 80%, rgba(0, 123, 255, 0.05) 0%, transparent 50%);
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 800px;
  margin: 0 auto;
}

.hero h1 {
  font-size: 3.5rem;
  font-weight: 800;
  margin-bottom: 1rem;
  background: linear-gradient(135deg, var(--text-primary) 0%, var(--accent-blue) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.1;
}

.hero p {
  font-size: 1.3rem;
  color: var(--text-secondary);
  margin-bottom: 2rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

/* Product Grid */
.product-grid {
  max-width: 1200px;
  margin: 0 auto;
  padding: 4rem 2rem;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
  justify-items: center;
}

.product-card {
  width: min(100%, 360px);
  background: var(--bg-card);
  border-radius: var(--radius);
  overflow: hidden;
  cursor: pointer;
  transition: var(--transition);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow);
  position: relative;
  group: hover;
}

.product-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-hover);
  border-color: var(--accent-blue);
}

.product-category {
  position: absolute;
  top: 12px;
  left: 12px;
  padding: 0.4rem 0.75rem;
  background: rgba(0, 123, 255, 0.15);
  color: var(--text-primary);
  border: 1px solid rgba(0, 123, 255, 0.4);
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 600;
  backdrop-filter: blur(10px);
}

.product-image {
  width: 100%;
  height: 240px;
  object-fit: cover;
  transition: var(--transition);
}

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

.product-info {
  padding: 1.5rem;
}

.product-name {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
  line-height: 1.3;
}

.product-price {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--accent-blue);
}

/* Product Details Page */
.product-details {
  max-width: 1000px;
  margin: 0 auto;
  padding: 4rem 2rem;
}

.product-gallery {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
  align-items: start;
}

.product-image-large {
  width: 100%;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.product-info-section {
  padding-top: 2rem;
}

.product-title {
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: 1rem;
  color: var(--text-primary);
  line-height: 1.2;
}

.product-price-large {
  font-size: 2rem;
  font-weight: 700;
  color: var(--accent-blue);
  margin-bottom: 2rem;
}

.product-description {
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 2rem;
  font-size: 1.1rem;
}

.product-description-text {
  white-space: pre-wrap;
}

.product-description-text ul {
  padding-left: 1.5rem;
  margin: 0.5rem 0 1rem 0;
  list-style: disc;
}

.product-description-text li {
  line-height: 1.6;
  margin: 0.25rem 0;
}

.buy-section {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

/* Buttons */
.btn {
  background: linear-gradient(135deg, var(--accent-blue) 0%, var(--accent-blue-hover) 100%);
  color: var(--text-primary);
  border: none;
  padding: 1rem 2rem;
  border-radius: var(--radius);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  box-shadow: var(--shadow);
  min-height: 50px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  text-decoration: none;
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: left 0.5s;
}

.btn:hover::before {
  left: 100%;
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
  background: linear-gradient(135deg, var(--accent-blue-hover) 0%, var(--accent-blue) 100%);
}

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

.btn-secondary:hover {
  background: var(--bg-secondary);
  border-color: var(--accent-blue);
}

/* Admin Panel */
.login-container {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
}

.login-card {
  background: var(--bg-card);
  padding: 3rem;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  border: 1px solid var(--border-color);
  width: 100%;
  max-width: 400px;
  text-align: center;
}

.login-card h2 {
  margin-bottom: 2rem;
  font-size: 2rem;
  font-weight: 700;
  color: var(--text-primary);
}

.admin-panel {
  padding: 2rem;
  max-width: 1200px;
  margin: 0 auto;
}

.admin-form {
  background: var(--bg-card);
  padding: 2rem;
  border-radius: var(--radius);
  margin-bottom: 2rem;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow);
}

.admin-form h2 {
  margin-bottom: 1.5rem;
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--text-primary);
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 600;
  color: var(--text-primary);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 1rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  background: var(--bg-secondary);
  color: var(--text-primary);
  font-size: 1rem;
  font-family: inherit;
  transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent-blue);
  box-shadow: 0 0 0 3px rgba(0, 123, 255, 0.1);
}

.form-group textarea {
  min-height: 100px;
  resize: vertical;
}

.form-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.product-list {
  display: grid;
  gap: 1rem;
}

.product-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--bg-card);
  padding: 1.5rem;
  border-radius: var(--radius);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow);
  transition: var(--transition);
}

.product-item:hover {
  background: var(--bg-secondary);
  border-color: var(--accent-blue);
}

.product-item-info h3 {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.25rem;
}

.product-item-info p {
  color: var(--accent-blue);
  font-weight: 600;
}

.product-item-actions {
  display: flex;
  gap: 0.5rem;
}

.product-item-actions .btn {
  padding: 0.5rem 1rem;
  font-size: 0.9rem;
  min-width: 80px;
}

/* Search Bar */
.search-bar {
  max-width: 1200px;
  margin: 80px auto 0 auto; /* push below fixed navbar */
  padding: 1rem 2rem;
  display: flex;
  gap: 1rem;
  align-items: center;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.search-bar input {
  flex: 1;
  padding: 0.75rem 1rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  background: var(--bg-secondary);
  color: var(--text-primary);
  font-size: 1rem;
  transition: var(--transition);
}

.search-bar input:focus {
  outline: none;
  border-color: var(--accent-blue);
  box-shadow: 0 0 0 3px rgba(0, 123, 255, 0.1);
}

.search-btn {
  background: var(--accent-blue);
  color: var(--text-primary);
  border: none;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius);
  cursor: pointer;
  transition: var(--transition);
  font-size: 1rem;
}

.search-btn:hover {
  background: var(--accent-blue-hover);
}

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

footer p {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

/* Responsive Design */
@media (max-width: 768px) {
  header {
    padding: 1rem;
  }

  .nav-container {
    position: relative;
  }

  nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(0, 0, 0, 0.95);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-top: none;
    flex-direction: column;
    gap: 0;
    padding: 1rem 0;
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    max-width: none;
  }

  nav.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  nav a {
    padding: 1rem 2rem;
    width: 100%;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
  }

  nav a:last-child {
    border-bottom: none;
  }

  .categories-dropdown {
    width: 100%;
  }

  .categories-menu {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    background: rgba(26, 26, 46, 0.9);
    border: none;
    box-shadow: none;
    display: none;
  }

  .categories-menu.active {
    display: block;
  }

  .categories-menu a {
    padding: 0.75rem 3rem;
    border-bottom: 1px solid var(--border-color);
  }

  .hamburger {
    display: flex;
  }

  .hero {
    padding: 3rem 1rem;
  }

  .hero h1 {
    font-size: 2.5rem;
  }

  .hero p {
    font-size: 1.1rem;
  }

  .product-grid {
    grid-template-columns: 1fr;
    padding: 2rem 1rem;
    gap: 1.5rem;
  }

  .product-gallery {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .product-info-section {
    padding-top: 0;
  }

  .buy-section {
    flex-direction: column;
  }

  .btn {
    width: 100%;
    justify-content: center;
  }

  .admin-form {
    padding: 1.5rem;
  }

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

  .product-item {
    flex-direction: column;
    align-items: stretch;
    gap: 1rem;
  }

  .product-item-actions {
    justify-content: center;
  }
}

@media (max-width: 480px) {
  .hero h1 {
    font-size: 2rem;
  }

  .product-title {
    font-size: 2rem;
  }

  .login-card {
    padding: 2rem 1.5rem;
  }
}

/* Loading Animation */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.product-card,
.product-item {
  animation: fadeIn 0.6s ease-out;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
  background: var(--accent-blue);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--accent-blue-hover);
}