/* ============================================================================
   Materials Database Page Styles
   ============================================================================ */

.materials-page {
  padding: 2rem 1rem;
  padding-top: 8rem; /* Account for fixed navigation header */
  min-height: 80vh;
}

@media (min-width: 768px) {
  .materials-page {
    padding-top: 9rem; /* More space on larger screens */
  }
}

@media (min-width: 1024px) {
  .materials-page {
    padding-top: 10rem; /* Extra space on desktop */
  }
}

.container-custom {
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 1rem;
}

/* Header Section */
.materials-header {
  margin-bottom: 2rem;
  text-align: left;
}

.materials-header h1 {
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-text-primary, #111827);
  margin-bottom: 0.5rem;
}

.materials-intro {
  font-size: 1rem;
  color: var(--color-text-secondary, #374151);
  line-height: 1.6;
  margin-top: 0.5rem;
}

/* Controls Section */
.materials-controls {
  margin-bottom: 2rem;
}

.materials-search {
  margin-bottom: 1.5rem;
}

.search-wrapper {
  position: relative;
  max-width: 100%;
}

@media (min-width: 768px) {
  .search-wrapper {
    max-width: 32rem;
  }
}

.search-icon {
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  width: 1.25rem;
  height: 1.25rem;
  color: var(--color-text-tertiary, #6b7280);
  pointer-events: none;
  z-index: 1;
  flex-shrink: 0;
}

.search-input {
  width: 100%;
  padding-left: 3.5rem !important;
  padding-right: 1rem;
  padding-top: 0.75rem;
  padding-bottom: 0.75rem;
  border: 1px solid var(--color-border, #e5e7eb);
  border-radius: 0.5rem;
  font-size: 1rem;
  color: var(--color-text-primary, #111827);
  background-color: #fff;
  transition: border-color 0.2s, box-shadow 0.2s;
  box-sizing: border-box;
}

.search-input:focus {
  outline: none;
  border-color: var(--color-primary, #2563eb);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.search-input::placeholder {
  color: var(--color-text-tertiary, #9ca3af);
}

/* Filter Bar */
.materials-filter-bar {
  display: flex;
  align-items: flex-end;
  gap: 1rem;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
}

.filter-group {
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
  flex: 1;
  min-width: 0;
  max-width: 280px;
}

.filter-group-label {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-text-tertiary, #6b7280);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.filter-dropdown {
  width: 100%;
  padding: 0.625rem 2.25rem 0.625rem 0.75rem;
  border: 1px solid var(--color-border, #e5e7eb);
  border-radius: 0.5rem;
  font-size: 0.875rem;
  font-weight: 500;
  background-color: #fff;
  color: var(--color-text-primary, #111827);
  cursor: pointer;
  appearance: none;
  -webkit-appearance: none;
  -moz-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%236b7280' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.625rem center;
  background-size: 1rem;
  box-sizing: border-box;
  transition: border-color 0.2s, box-shadow 0.2s;
  line-height: 1.4;
}

.filter-dropdown:hover {
  border-color: var(--color-gray-300, #d1d5db);
}

.filter-dropdown:focus {
  outline: none;
  border-color: var(--color-primary, #2563eb);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.filter-dropdown.filter-active {
  border-color: var(--color-primary, #2563eb);
  background-color: #eff6ff;
  color: var(--color-primary, #2563eb);
  font-weight: 600;
}

.filter-dropdown option {
  font-weight: 500;
  color: var(--color-text-primary, #111827);
  background-color: #fff;
}

.filter-dropdown option:disabled {
  color: var(--color-text-tertiary, #9ca3af);
}

.filter-clear-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.625rem 0.875rem;
  border: 1px solid transparent;
  border-radius: 0.5rem;
  background: none;
  color: var(--color-text-tertiary, #6b7280);
  font-size: 0.8125rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
  white-space: nowrap;
  flex-shrink: 0;
}

.filter-clear-btn:hover {
  color: var(--color-text-primary, #111827);
  background-color: var(--color-gray-100, #f3f4f6);
}

@media (max-width: 640px) {
  .materials-filter-bar {
    flex-direction: column;
    align-items: stretch;
    gap: 0.75rem;
  }

  .filter-group {
    max-width: none;
  }

  .filter-clear-btn {
    align-self: flex-start;
  }
}

/* Results Info */
.materials-results-info {
  margin-bottom: 1.5rem;
  font-size: 0.875rem;
  color: var(--color-text-secondary, #374151);
}

/* Materials Grid */
.materials-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  margin-bottom: 2rem;
}

@media (min-width: 768px) {
  .materials-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .materials-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* Material Card */
.material-card {
  background: #fff;
  border: 2px solid var(--color-border, #e5e7eb);
  border-radius: 0.75rem;
  padding: 1.5rem;
  transition: all 0.2s;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
  display: flex;
  flex-direction: column;
  opacity: 0;
  transform: translateY(20px);
  animation: fadeInUp 0.6s ease-out forwards;
  position: relative;
}

/* Stagger animation delays for cards */
.material-card:nth-child(1) { animation-delay: 0.05s; }
.material-card:nth-child(2) { animation-delay: 0.1s; }
.material-card:nth-child(3) { animation-delay: 0.15s; }
.material-card:nth-child(4) { animation-delay: 0.2s; }
.material-card:nth-child(5) { animation-delay: 0.25s; }
.material-card:nth-child(6) { animation-delay: 0.3s; }
.material-card:nth-child(n+7) { animation-delay: 0.35s; }

.material-card:hover {
  border-color: var(--color-gray-300, #d1d5db);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  transform: translateY(-2px);
}

.material-card-header {
  margin-bottom: 1rem;
}

.material-category-badge {
  display: inline-flex;
  align-items: center;
  padding: 0.375rem 0.75rem;
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 600;
  border: 1px solid;
}

.material-class-badge {
  position: absolute;
  top: 0.75rem;
  right: 0.75rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.25rem 0.5rem;
  border-radius: 0.375rem;
  font-size: 0.625rem;
  font-weight: 700;
  letter-spacing: 0.025em;
  color: #ffffff;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  z-index: 10;
  text-transform: uppercase;
  transition: all 0.2s;
  text-decoration: none;
  cursor: pointer;
}

.material-class-badge:hover {
  color: #ffffff;
  text-decoration: none;
}

.material-card:hover .material-class-badge,
.material-class-badge:hover {
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
  transform: scale(1.05);
}

/* Class Badge Colors - Modern Tech Palette */
.class-badge-1 {
  background: linear-gradient(135deg, #10b981 0%, #059669 100%);
}

.class-badge-2 {
  background: linear-gradient(135deg, #06b6d4 0%, #0891b2 100%);
}

.class-badge-3 {
  background: linear-gradient(135deg, #4f46e5 0%, #4338ca 100%);
}

.class-badge-4 {
  background: linear-gradient(135deg, #8b5cf6 0%, #7c3aed 100%);
}

.class-badge-5 {
  background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
}

.class-badge-6 {
  background: linear-gradient(135deg, #14b8a6 0%, #0d9488 100%);
}

.class-badge-7 {
  background: linear-gradient(135deg, #a855f7 0%, #9333ea 100%);
}

.class-badge-8 {
  background: linear-gradient(135deg, #6366f1 0%, #4f46e5 100%);
}

.class-badge-9 {
  background: linear-gradient(135deg, #22c55e 0%, #16a34a 100%);
}

.class-badge-10 {
  background: linear-gradient(135deg, #0ea5e9 0%, #0284c7 100%);
}

.class-badge-11 {
  background: linear-gradient(135deg, #9333ea 0%, #7e22ce 100%);
}

.class-badge-default {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

/* Category Badge Colors */
.badge-slate {
  background-color: #f1f5f9;
  color: #334155;
  border-color: #cbd5e1;
}

.badge-gray {
  background-color: #f9fafb;
  color: #374151;
  border-color: #d1d5db;
}

.badge-blue {
  background-color: #eff6ff;
  color: #1e40af;
  border-color: #bfdbfe;
}

.badge-cyan {
  background-color: #ecfeff;
  color: #155e75;
  border-color: #a5f3fc;
}

.badge-indigo {
  background-color: #eef2ff;
  color: #3730a3;
  border-color: #c7d2fe;
}

.badge-amber {
  background-color: #fffbeb;
  color: #92400e;
  border-color: #fde68a;
}

.badge-lime {
  background-color: #f7fee7;
  color: #365314;
  border-color: #d9f99d;
}

.badge-orange {
  background-color: #fff7ed;
  color: #9a3412;
  border-color: #fed7aa;
}

.badge-red {
  background-color: #fef2f2;
  color: #991b1b;
  border-color: #fecaca;
}

.badge-pink {
  background-color: #fdf2f8;
  color: #9f1239;
  border-color: #fbcfe8;
}

.badge-yellow {
  background-color: #fefce8;
  color: #854d0e;
  border-color: #fde047;
}

.badge-stone {
  background-color: #fafaf9;
  color: #44403c;
  border-color: #e7e5e4;
}

.badge-primary {
  background-color: #eff6ff;
  color: #1e40af;
  border-color: #bfdbfe;
}

.material-name {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-text-primary, #111827);
  margin-bottom: 1rem;
  line-height: 1.4;
  transition: color 0.2s;
}

.material-card:hover .material-name {
  color: var(--color-primary, #2563eb);
}

.material-properties {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
  flex-grow: 1;
}

.material-property {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.5rem;
  font-size: 0.875rem;
}

.property-label {
  color: var(--color-text-tertiary, #6b7280);
  flex-shrink: 0;
}

.property-value {
  color: var(--color-text-primary, #111827);
  font-weight: 500;
  text-align: right;
  flex-grow: 1;
}

.material-card-footer {
  margin-top: auto;
  padding-top: 1rem;
  border-top: 1px solid var(--color-border, #e5e7eb);
}

.material-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-primary, #2563eb);
  text-decoration: none;
  transition: gap 0.2s;
}

.material-link:hover {
  gap: 0.75rem;
}

.material-link .link-arrow {
  width: 1rem;
  height: 1rem;
  transition: transform 0.2s;
}

.material-link:hover .link-arrow {
  transform: translateX(2px);
}

/* Empty State */
.empty-state {
  text-align: center;
  padding: 3rem 1rem;
  color: var(--color-text-secondary, #374151);
}

.empty-state p {
  font-size: 1.125rem;
  margin-bottom: 0.5rem;
}

.empty-state-subtext {
  font-size: 0.875rem;
  color: var(--color-text-tertiary, #6b7280);
}

/* Loading State */
.loading-state {
  text-align: center;
  padding: 3rem 1rem;
  color: var(--color-text-secondary, #374151);
}

/* Error State */
.error-state {
  text-align: center;
  padding: 3rem 1rem;
  color: var(--color-text-secondary, #374151);
}

/* Pagination */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-top: 2rem;
  padding-top: 2rem;
  border-top: 1px solid var(--color-border, #e5e7eb);
}

.pagination-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  border: 1px solid var(--color-border, #e5e7eb);
  border-radius: 0.5rem;
  background-color: #fff;
  color: var(--color-text-primary, #111827);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
}

.pagination-btn:hover:not(.disabled) {
  background-color: var(--color-gray-50, #f9fafb);
  border-color: var(--color-gray-300, #d1d5db);
}

.pagination-btn.active {
  background-color: var(--color-primary, #2563eb);
  color: #fff;
  border-color: var(--color-primary, #2563eb);
}

.pagination-btn.disabled {
  opacity: 0.5;
  cursor: not-allowed;
  background-color: var(--color-gray-100, #f3f4f6);
}

.pagination-text {
  display: none;
}

@media (min-width: 640px) {
  .pagination-text {
    display: inline;
  }
}

.pagination-ellipsis {
  padding: 0 0.5rem;
  color: var(--color-text-tertiary, #6b7280);
}

/* Responsive adjustments */
@media (max-width: 640px) {
  .materials-header h1 {
    font-size: 1.75rem;
  }

  .material-name {
    font-size: 1.125rem;
  }

  .material-class-badge {
    top: 0.5rem;
    right: 0.5rem;
    padding: 0.2rem 0.4rem;
    font-size: 0.5625rem;
  }
}

/* ============================================================================
   Entry Animations
   ============================================================================ */

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Ensure hover transforms work with animations */
.material-card:hover {
  transform: translateY(-2px) !important;
}