/* ============================================
   COMPONENT STYLES
   ============================================ */

/* Button Styles */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-md) var(--spacing-xl);
  border: none;
  border-radius: var(--radius-md);
  font-size: 15px;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-base);
  text-decoration: none;
  gap: var(--spacing-sm);
  will-change: transform;
}

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

.btn-primary:hover {
  background: #4338CA;
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-secondary {
  background: var(--card-bg);
  color: var(--text-primary);
  box-shadow: var(--shadow-soft);
}

.btn-secondary:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
}

.btn-icon {
  padding: var(--spacing-md);
  border-radius: var(--radius-md);
  background: var(--card-bg);
  box-shadow: var(--shadow-soft);
  border: none;
  cursor: pointer;
  transition: all var(--transition-base);
  display: flex;
  align-items: center;
  justify-content: center;
}

.btn-icon:hover {
  transform: scale(1.05);
  box-shadow: var(--shadow-hover);
}

/* Card Styles */
.card {
  background: var(--card-bg);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-soft);
  padding: var(--spacing-xl);
  transition: all var(--transition-base);
  will-change: transform;
}

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

.card-compact {
  padding: var(--spacing-lg);
}

/* Food Card */
.food-card {
  background: var(--card-bg);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-soft);
  overflow: hidden;
  transition: all var(--transition-base);
  cursor: pointer;
  will-change: transform;
}

.food-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}

.food-card-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
  background: var(--bg-primary);
}

.food-card-content {
  padding: var(--spacing-lg);
}

.food-card-brand {
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-md);
}

.food-card-stats {
  display: flex;
  gap: var(--spacing-lg);
  align-items: center;
}

.food-card-stat {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.food-card-stat-label {
  font-size: 11px;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.food-card-stat-value {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
}

/* Search Bar */
.search-container {
  position: relative;
  margin-bottom: var(--spacing-2xl);
}

.search-bar {
  width: 100%;
  padding: var(--spacing-lg) var(--spacing-xl);
  padding-left: 48px;
  border: 2px solid transparent;
  border-radius: var(--radius-lg);
  background: var(--card-bg);
  box-shadow: var(--shadow-soft);
  font-size: 16px;
  transition: all var(--transition-base);
  outline: none;
}

.search-bar:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 4px rgba(79, 70, 229, 0.1);
}

.search-icon {
  position: absolute;
  left: var(--spacing-lg);
  top: 50%;
  transform: translateY(-50%);
  width: 20px;
  height: 20px;
  color: var(--text-secondary);
  pointer-events: none;
}

.search-results {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  margin-top: var(--spacing-sm);
  background: var(--card-bg);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-hover);
  max-height: 400px;
  overflow-y: auto;
  z-index: 100;
  animation: slideDown var(--transition-base);
}

.search-result-item {
  padding: var(--spacing-lg);
  cursor: pointer;
  transition: background var(--transition-fast);
  border-bottom: 1px solid var(--bg-primary);
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
}

.search-result-item:last-child {
  border-bottom: none;
}

.search-result-item:hover {
  background: var(--bg-primary);
}

.search-result-image {
  width: 50px;
  height: 50px;
  object-fit: cover;
  border-radius: var(--radius-sm);
}

.search-result-info {
  flex: 1;
}

.search-result-name {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: var(--spacing-xs);
}

.search-result-brand {
  font-size: 12px;
  color: var(--text-secondary);
}

/* Skeleton Loader */
.skeleton {
  background: linear-gradient(
    90deg,
    var(--bg-primary) 0%,
    rgba(255, 255, 255, 0.5) 50%,
    var(--bg-primary) 100%
  );
  background-size: 1000px 100%;
  animation: shimmer 2s infinite;
  border-radius: var(--radius-sm);
}

.skeleton-card {
  background: var(--card-bg);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-soft);
  padding: var(--spacing-xl);
}

.skeleton-image {
  width: 100%;
  height: 200px;
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-lg);
}

.skeleton-line {
  height: 16px;
  margin-bottom: var(--spacing-md);
  border-radius: var(--radius-sm);
}

.skeleton-line-short {
  width: 60%;
}

.skeleton-line-medium {
  width: 80%;
}

/* Badge */
.badge {
  display: inline-flex;
  align-items: center;
  padding: var(--spacing-xs) var(--spacing-md);
  border-radius: var(--radius-sm);
  font-size: 12px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.badge-grade {
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: var(--radius-md);
  font-size: 14px;
}

.badge-a {
  background: #10B981;
  color: white;
}

.badge-b {
  background: #34D399;
  color: white;
}

.badge-c {
  background: #FBBF24;
  color: white;
}

.badge-d {
  background: #F97316;
  color: white;
}

.badge-e {
  background: #EF4444;
  color: white;
}

/* Section Header */
.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-xl);
}

.section-title {
  font-size: 22px;
  font-weight: 600;
  color: var(--text-primary);
}

.section-link {
  font-size: 14px;
  color: var(--accent);
  text-decoration: none;
  font-weight: 500;
  transition: color var(--transition-fast);
}

.section-link:hover {
  color: #4338CA;
}

/* Grid Layouts */
.grid {
  display: grid;
  gap: var(--spacing-xl);
}

.grid-2 {
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
}

.grid-3 {
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
}

.grid-4 {
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
}

/* Quick Actions */
.quick-actions {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-2xl);
}

.quick-action-card {
  background: var(--card-bg);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-soft);
  padding: var(--spacing-xl);
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-base);
  will-change: transform;
}

.quick-action-card:hover {
  transform: translateY(-4px) scale(1.02);
  box-shadow: var(--shadow-hover);
}

.quick-action-icon {
  width: 48px;
  height: 48px;
  margin: 0 auto var(--spacing-lg);
  background: var(--accent);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 24px;
}

.quick-action-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--spacing-xs);
}

.quick-action-desc {
  font-size: 13px;
  color: var(--text-secondary);
}

/* Empty State */
.empty-state {
  text-align: center;
  padding: var(--spacing-2xl);
  color: var(--text-secondary);
}

.empty-state-icon {
  font-size: 48px;
  margin-bottom: var(--spacing-lg);
  opacity: 0.5;
}

.empty-state-text {
  font-size: 16px;
  margin-bottom: var(--spacing-sm);
}

.empty-state-subtext {
  font-size: 14px;
  color: var(--text-secondary);
}

/* Nutrition Chart Container */
.chart-container {
  position: relative;
  height: 300px;
  margin: var(--spacing-xl) 0;
}

/* Responsive */
@media (max-width: 768px) {
  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }
  
  .quick-actions {
    grid-template-columns: 1fr;
  }
  
  .section-header {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--spacing-md);
  }
}