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

:root {
  --primary: #1a237e;
  --primary-light: #534bae;
  --accent: #ffd700;
  --bg: #0d1117;
  --bg-card: #161b22;
  --text: #f0f6fc;
  --text-muted: #8b949e;
  --border: #30363d;
  --danger: #f85149;
}

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

.app {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Header */
.header {
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 1.5rem;
  font-weight: bold;
  color: var(--accent);
  text-decoration: none;
}

/* Search Form */
.search-form {
  display: flex;
  gap: 0.5rem;
}

.search-input {
  flex: 1;
  padding: 0.5rem 1rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg);
  color: var(--text);
  font-size: 0.9rem;
}

.search-input::placeholder {
  color: var(--text-muted);
}

.search-btn {
  padding: 0.5rem 1rem;
  background: var(--primary);
  color: white;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: background 0.2s;
}

.search-btn:hover {
  background: var(--primary-light);
}

/* Search Page */
.search-page h1 {
  margin-bottom: 1rem;
  color: var(--accent);
}

.search-page .result-count {
  color: var(--text-muted);
  margin-bottom: 1.5rem;
}

.search-page .loading {
  color: var(--text-muted);
  text-align: center;
  padding: 3rem;
}

.nav {
  display: flex;
  gap: 1.5rem;
  align-items: center;
}

.nav a {
  color: var(--text);
  text-decoration: none;
  padding: 0.5rem;
  transition: color 0.2s;
}

.nav a:hover,
.nav a.active {
  color: var(--accent);
}

.dropdown {
  position: relative;
}

.dropdown-trigger {
  cursor: pointer;
  padding: 0.5rem;
}

.dropdown-menu {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  min-width: 180px;
  padding: 0.5rem 0;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
}

.dropdown:hover .dropdown-menu {
  display: block;
}

.dropdown-menu a {
  display: block;
  padding: 0.5rem 1rem;
}

.dropdown-menu a:hover {
  background: var(--border);
}

/* Main */
.main {
  flex: 1;
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem 1rem;
  width: 100%;
}

/* Hero */
.hero {
  text-align: center;
  padding: 3rem 1rem;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  border-radius: 12px;
  margin-bottom: 2rem;
}

.hero h1 {
  font-size: 2rem;
  margin-bottom: 0.5rem;
  color: var(--accent);
}

.hero p {
  color: var(--text-muted);
}

/* Categories */
.categories-section {
  margin-bottom: 2rem;
}

.categories-section h2 {
  margin-bottom: 1rem;
}

.category-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.category-tag {
  display: inline-block;
  padding: 0.5rem 1rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 20px;
  color: var(--text);
  text-decoration: none;
  font-size: 0.9rem;
  transition: all 0.2s;
}

.category-tag:hover {
  background: var(--primary);
  border-color: var(--primary);
}

/* Product Grid */
.products-section h2 {
  margin-bottom: 1rem;
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 1.5rem;
}

.product-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  transition: transform 0.2s, box-shadow 0.2s;
}

.product-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
}

.product-link {
  text-decoration: none;
  color: inherit;
}

.product-image {
  aspect-ratio: 1;
  overflow: hidden;
  background: var(--border);
}

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

.product-info {
  padding: 1rem;
}

.product-title {
  font-size: 0.95rem;
  font-weight: 500;
  margin-bottom: 0.5rem;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.product-meta {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-bottom: 0.5rem;
}

.product-psa,
.product-rarity {
  font-size: 0.75rem;
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
}

.product-psa {
  background: var(--primary);
  color: white;
}

.product-rarity {
  background: var(--border);
  color: var(--text-muted);
}

.product-price {
  font-size: 1rem;
  font-weight: bold;
  color: var(--accent);
}

/* Filters */
.filters {
  margin-bottom: 2rem;
}

.filter-group {
  margin-bottom: 1rem;
}

.filter-label {
  font-weight: 500;
  margin-right: 0.5rem;
  color: var(--text-muted);
}

.filter-tags {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.filter-tag {
  padding: 0.4rem 0.8rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 20px;
  color: var(--text);
  font-size: 0.85rem;
  cursor: pointer;
  transition: all 0.2s;
}

.filter-tag:hover {
  border-color: var(--primary);
}

.filter-tag.active {
  background: var(--primary);
  border-color: var(--primary);
  color: white;
}

.no-products {
  text-align: center;
  color: var(--text-muted);
  padding: 3rem;
}

/* Category Page */
.category-page h1 {
  margin-bottom: 1.5rem;
  color: var(--accent);
}

/* Login */
.login-page {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 60vh;
}

.login-box {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 2rem;
  width: 100%;
  max-width: 400px;
}

.login-box h1 {
  margin-bottom: 1.5rem;
  text-align: center;
}

.login-box form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.login-box input {
  padding: 0.75rem 1rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg);
  color: var(--text);
  font-size: 1rem;
}

.login-box button {
  padding: 0.75rem;
  background: var(--primary);
  color: white;
  border: none;
  border-radius: 8px;
  font-size: 1rem;
  cursor: pointer;
  transition: background 0.2s;
}

.login-box button:hover {
  background: var(--primary-light);
}

.login-box button:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.error {
  color: var(--danger);
  text-align: center;
}

/* Admin */
.admin-page {
  max-width: 1000px;
}

.admin-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
}

.admin-actions {
  margin-bottom: 1.5rem;
}

.btn-primary {
  padding: 0.75rem 1.5rem;
  background: var(--primary);
  color: white;
  border: none;
  border-radius: 8px;
  font-size: 1rem;
  cursor: pointer;
  transition: background 0.2s;
}

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

.btn-logout {
  padding: 0.5rem 1rem;
  background: transparent;
  color: var(--text-muted);
  border: 1px solid var(--border);
  border-radius: 8px;
  cursor: pointer;
}

.btn-logout:hover {
  border-color: var(--text);
  color: var(--text);
}

.btn-danger {
  color: var(--danger);
  border-color: var(--danger);
}

/* Modal */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.7);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 1000;
}

.modal {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 2rem;
  width: 100%;
  max-width: 500px;
  max-height: 90vh;
  overflow-y: auto;
}

.modal h2 {
  margin-bottom: 1.5rem;
}

.form-group {
  margin-bottom: 1rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 500;
}

.form-group input,
.form-group select {
  width: 100%;
  padding: 0.75rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg);
  color: var(--text);
  font-size: 1rem;
}

.form-actions {
  display: flex;
  justify-content: flex-end;
  gap: 1rem;
  margin-top: 1.5rem;
}

.form-actions button {
  padding: 0.75rem 1.5rem;
  border-radius: 8px;
  cursor: pointer;
}

.form-actions button:first-child {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text);
}

/* Product Table */
.product-table {
  width: 100%;
  border-collapse: collapse;
}

.product-table th,
.product-table td {
  padding: 1rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

.product-table th {
  color: var(--text-muted);
  font-weight: 500;
}

.product-table .thumb {
  width: 50px;
  height: 50px;
  object-fit: cover;
  border-radius: 4px;
}

.product-table button {
  padding: 0.5rem 0.75rem;
  margin-right: 0.5rem;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 4px;
  cursor: pointer;
}

.product-table button:hover {
  background: var(--border);
}

/* Footer */
.footer {
  text-align: center;
  padding: 2rem;
  color: var(--text-muted);
  border-top: 1px solid var(--border);
}

/* Favorite Button */
.product-image {
  position: relative;
}

.favorite-btn {
  position: absolute;
  top: 8px;
  right: 8px;
  width: 32px;
  height: 32px;
  border: none;
  border-radius: 50%;
  background: rgba(0, 0, 0, 0.6);
  color: #888;
  font-size: 1.2rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
}

.favorite-btn:hover {
  background: rgba(0, 0, 0, 0.8);
  color: var(--accent);
}

.favorite-btn.active {
  color: var(--accent);
}

/* Search History */
.search-wrapper {
  position: relative;
  flex: 1;
  max-width: 400px;
  margin: 0 1.5rem;
}

.search-history {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  margin-top: 4px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
  z-index: 100;
}

.history-header {
  padding: 0.5rem 1rem;
  font-size: 0.8rem;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border);
}

.history-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.5rem 1rem;
  cursor: pointer;
  transition: background 0.2s;
}

.history-item:hover {
  background: var(--border);
}

.history-remove {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 1rem;
  cursor: pointer;
  padding: 0 0.25rem;
}

.history-remove:hover {
  color: var(--danger);
}

/* Favorites Page */
.favorites-page h1 {
  margin-bottom: 1.5rem;
  color: var(--accent);
}

/* Responsive */
@media (max-width: 768px) {
  .header-content {
    flex-direction: column;
    gap: 1rem;
  }

  .search-wrapper {
    width: 100%;
    max-width: none;
    margin: 0;
  }

  .hero h1 {
    font-size: 1.5rem;
  }

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

  .admin-header {
    flex-direction: column;
    gap: 1rem;
    align-items: flex-start;
  }

  .product-table {
    font-size: 0.9rem;
  }
}