/* AI Tools Navigator - Component Styles */

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

.header {
  background: var(--bg-card);
  border-bottom: 1px solid var(--border-light);
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  backdrop-filter: blur(8px);
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-md) 0;
}

.logo {
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--primary);
  text-decoration: none;
}

.nav-controls {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

/* ==========================================================================
   Search Component
   ========================================================================== */

.search-container {
  position: relative;
  max-width: 400px;
  width: 100%;
}

.search-input {
  width: 100%;
  padding: var(--space-sm) var(--space-md) var(--space-sm) 2.5rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  font-size: var(--text-base);
  color: var(--text-primary);
  transition: all 0.2s ease;
}

.search-input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.search-icon {
  position: absolute;
  left: var(--space-sm);
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-tertiary);
  width: 1.25rem;
  height: 1.25rem;
}

/* ==========================================================================
   Language Selector Component
   ========================================================================== */

.language-selector {
  position: relative;
}

.language-button {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-sm) var(--space-md);
  background: var(--bg-secondary);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  cursor: pointer;
  transition: all 0.2s ease;
  min-width: 80px;
  white-space: nowrap;
}

.language-button:hover {
  background: var(--gray-200);
}

.lang-text {
  white-space: nowrap;
}

/* ==========================================================================
   Category Filter Component
   ========================================================================== */

.category-filter {
  padding: var(--space-lg) 0;
  border-bottom: 1px solid var(--border-light);
}

.category-list {
  display: flex;
  gap: var(--space-sm);
  overflow-x: auto;
  padding-bottom: var(--space-xs);
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.category-list::-webkit-scrollbar {
  display: none;
}

.category-item {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-sm) var(--space-md);
  background: var(--bg-secondary);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-full);
  white-space: nowrap;
  cursor: pointer;
  transition: all 0.2s ease;
  color: var(--text-secondary);
  font-size: var(--text-sm);
}

.category-item:hover {
  background: var(--gray-200);
}

.category-item.active {
  background: var(--primary);
  color: var(--text-inverse);
  border-color: var(--primary);
}

/* ==========================================================================
   Tools Section & Grid
   ========================================================================== */

.tools-section {
  padding: var(--space-2xl) 0;
}

.tools-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-xl);
}

.tools-count {
  color: var(--text-secondary);
  font-size: var(--text-sm);
}

.sort-controls {
  display: flex;
  gap: var(--space-sm);
}

/* ==========================================================================
   Sort Button Component
   ========================================================================== */

.sort-button {
  padding: var(--space-xs) var(--space-sm);
  background: var(--bg-secondary);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  cursor: pointer;
  transition: all 0.2s ease;
  color: var(--text-primary);
}

.sort-button:hover {
  background: var(--gray-200);
}

.sort-button.active {
  background: var(--primary);
  color: var(--text-inverse);
  border-color: var(--primary);
}

/* ==========================================================================
   Tool Card Component
   ========================================================================== */

.tool-card {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  transition: all 0.2s ease;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.tool-card:hover {
  box-shadow: var(--shadow-xl);
  transform: translateY(-4px);
  border-color: var(--primary);
}

.tool-header {
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
  margin-bottom: var(--space-md);
}

.tool-logo {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  overflow: hidden;
  flex-shrink: 0;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 18px;
  color: white;
  position: relative;
}

.tool-logo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  position: absolute;
  top: 0;
  left: 0;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.tool-logo img.loaded,
.tool-logo img[data-loaded="true"] {
  opacity: 1;
}

.tool-logo img[src=""],
.tool-logo img:not([src]),
.tool-logo img[src*="placeholder"] {
  display: none;
}

.logo-fallback {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 18px;
  color: white;
  z-index: 1;
}

.tool-logo img {
  z-index: 2;
}

.tool-info {
  flex: 1;
  min-width: 0;
}

.tool-name {
  font-size: var(--text-lg);
  font-weight: 600;
  margin-bottom: var(--space-xs);
  color: var(--text-primary);
}

.tool-developer {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  margin-bottom: var(--space-xs);
}

.tool-description {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: var(--space-md);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.tool-meta {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin-bottom: var(--space-md);
}

.tool-rating {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: var(--text-sm);
  color: var(--text-secondary);
}

.rating-star {
  color: var(--warning);
}

.tool-pricing {
  font-size: var(--text-sm);
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-full);
  font-weight: 500;
}

.pricing-free {
  background: rgba(16, 185, 129, 0.1);
  color: var(--success);
}

.pricing-freemium {
  background: rgba(245, 158, 11, 0.1);
  color: var(--warning);
}

.pricing-paid {
  background: rgba(239, 68, 68, 0.1);
  color: var(--error);
}

/* ==========================================================================
   Tool Tags Component
   ========================================================================== */

.tool-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  margin-bottom: var(--space-md);
}

.tool-tag {
  font-size: var(--text-xs);
  padding: var(--space-xs) var(--space-sm);
  background: var(--bg-secondary);
  color: var(--text-secondary);
  border-radius: var(--radius-full);
  border: 1px solid var(--border-light);
}

/* Tag color variants */
.tool-tag--primary {
  background: rgba(59, 130, 246, 0.1);
  color: var(--primary);
  border-color: rgba(59, 130, 246, 0.2);
}

.tool-tag--success {
  background: rgba(16, 185, 129, 0.1);
  color: var(--success);
  border-color: rgba(16, 185, 129, 0.2);
}

.tool-tag--warning {
  background: rgba(245, 158, 11, 0.1);
  color: var(--warning);
  border-color: rgba(245, 158, 11, 0.2);
}

.tool-tag--error {
  background: rgba(239, 68, 68, 0.1);
  color: var(--error);
  border-color: rgba(239, 68, 68, 0.2);
}

/* ==========================================================================
   Tool Actions Component
   ========================================================================== */

.tool-actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.tool-links {
  display: flex;
  gap: var(--space-sm);
}

.tool-link {
  font-size: var(--text-xs);
  padding: var(--space-xs) var(--space-sm);
  background: var(--primary);
  color: var(--text-inverse);
  border-radius: var(--radius-md);
  text-decoration: none;
  transition: all 0.2s ease;
}

.tool-link:hover {
  background: var(--primary-dark);
  color: var(--text-inverse);
}

.tool-favorites {
  display: flex;
  gap: var(--space-xs);
}

.favorite-button {
  width: 32px;
  height: 32px;
  border: none;
  background: var(--bg-secondary);
  border-radius: var(--radius-md);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
  color: var(--text-tertiary);
}

.favorite-button:hover {
  background: var(--gray-200);
  color: var(--text-secondary);
}

.favorite-button.active {
  background: var(--error);
  color: var(--text-inverse);
}

/* ==========================================================================
   Pagination Component
   ========================================================================== */

.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-2xl) 0;
}

.pagination-button {
  padding: var(--space-sm) var(--space-md);
  background: var(--bg-secondary);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all 0.2s ease;
  color: var(--text-primary);
  text-decoration: none;
}

.pagination-button:hover {
  background: var(--gray-200);
  color: var(--text-primary);
}

.pagination-button.active {
  background: var(--primary);
  color: var(--text-inverse);
  border-color: var(--primary);
}

.pagination-button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* ==========================================================================
   Loading States
   ========================================================================== */

.loading {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: var(--space-3xl);
}

.spinner {
  width: 2rem;
  height: 2rem;
  border: 2px solid var(--border-light);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

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

/* ==========================================================================
   Empty States
   ========================================================================== */

.empty-state {
  text-align: center;
  padding: var(--space-3xl);
}

.empty-state-icon {
  font-size: var(--text-4xl);
  margin-bottom: var(--space-md);
  opacity: 0.5;
}

.empty-state-title {
  font-size: var(--text-xl);
  margin-bottom: var(--space-sm);
  color: var(--text-primary);
}

.empty-state-description {
  color: var(--text-secondary);
  margin-bottom: var(--space-lg);
}

/* ==========================================================================
   Button System (4 variants per DESIGN.md 5.3)
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-lg);
  font-size: var(--text-base);
  font-weight: 500;
  line-height: 1.5;
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all 0.2s ease;
  border: 1px solid transparent;
  text-decoration: none;
}

.btn:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

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

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

.btn-secondary {
  background: var(--bg-secondary);
  color: var(--text-primary);
  border-color: var(--border-light);
}

.btn-secondary:hover {
  background: var(--gray-200);
  border-color: var(--gray-300);
}

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

.btn-outline:hover {
  background: var(--primary);
  color: var(--text-inverse);
}

.btn-text {
  background: transparent;
  color: var(--primary);
  border-color: transparent;
  padding: var(--space-xs) var(--space-sm);
}

.btn-text:hover {
  background: rgba(59, 130, 246, 0.1);
  color: var(--primary-dark);
}

.btn-sm {
  padding: var(--space-xs) var(--space-sm);
  font-size: var(--text-sm);
}

.btn-lg {
  padding: var(--space-md) var(--space-xl);
  font-size: var(--text-lg);
}

.btn-icon {
  width: 40px;
  height: 40px;
  padding: 0;
  border-radius: var(--radius-md);
}

/* ==========================================================================
   Form Controls (per DESIGN.md 5.3)
   ========================================================================== */

.form-group {
  margin-bottom: var(--space-lg);
}

.form-label {
  display: block;
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: var(--space-xs);
}

.form-input {
  width: 100%;
  padding: var(--space-sm) var(--space-md);
  font-size: var(--text-base);
  font-family: var(--font-sans);
  color: var(--text-primary);
  background: var(--bg-primary);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  transition: all 0.2s ease;
}

.form-input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.form-input:disabled {
  background: var(--gray-100);
  cursor: not-allowed;
  opacity: 0.7;
}

.form-input::placeholder {
  color: var(--text-tertiary);
}

.form-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='%2364748b' viewBox='0 0 16 16'%3E%3Cpath d='M7.247 11.14L2.451 5.658C1.885 5.013 2.345 4 3.204 4h9.592a1 1 0 0 1 .753 1.659l-4.796 5.48a1 1 0 0 1-1.506 0z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--space-sm) center;
  padding-right: 2.5rem;
}

.form-checkbox,
.form-radio {
  width: 18px;
  height: 18px;
  margin: 0;
  cursor: pointer;
  accent-color: var(--primary);
}

.form-checkbox:checked,
.form-radio:checked {
  background-color: var(--primary);
  border-color: var(--primary);
}

.form-hint {
  font-size: var(--text-xs);
  color: var(--text-tertiary);
  margin-top: var(--space-xs);
}

.form-error {
  font-size: var(--text-xs);
  color: var(--error);
  margin-top: var(--space-xs);
}

/* ==========================================================================
   Responsive Component Styles
   ========================================================================== */

@media (max-width: 640px) {
  .header-content {
    flex-direction: column;
    gap: var(--space-md);
  }

  .search-container {
    max-width: none;
  }

  .tools-header {
    flex-direction: column;
    gap: var(--space-md);
    align-items: flex-start;
  }

  .tool-card {
    padding: var(--space-md);
  }

  .tool-header {
    gap: var(--space-sm);
  }

  .tool-logo {
    width: 40px;
    height: 40px;
  }
}

/* ==========================================================================
   Print Styles
   ========================================================================== */

@media print {
  .header,
  .category-filter,
  .pagination,
  .tool-actions {
    display: none;
  }

  .tool-card {
    break-inside: avoid;
    border: 1px solid #ddd;
    margin-bottom: var(--space-md);
  }
}