/* ========================================
   标准页面专用样式
   ======================================== */

/* ===== SEARCH SECTION ===== */
.search-section {
  background: var(--color-gray-100);
  padding: var(--space-2xl) 0;
}

.search-box-large {
  display: flex;
  gap: var(--space-sm);
  max-width: 700px;
  margin: 0 auto;
}

.search-box-large input {
  flex: 1;
  font-size: 1.1rem;
  padding: 1rem 1.25rem;
  border: 2px solid var(--color-gray-300);
  background: var(--color-white);
  outline: none;
  transition: border-color var(--duration-fast) ease;
}

.search-box-large input:focus {
  border-color: var(--color-black);
}

.search-box-large .btn {
  padding: 1rem 1.5rem;
}

.search-tags {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  margin-top: var(--space-lg);
  flex-wrap: wrap;
}

.tag-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-gray-500);
}

.tag {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  padding: 0.35rem 0.75rem;
  background: var(--color-white);
  border: 1px solid var(--color-gray-300);
  color: var(--color-gray-700);
  transition: all var(--duration-fast) ease;
  cursor: pointer;
}

.tag:hover {
  background: var(--color-black);
  border-color: var(--color-black);
  color: var(--color-white);
}

/* ===== CATEGORIES ===== */
.categories-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-lg);
}

@media (max-width: 1024px) {
  .categories-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .categories-grid {
    grid-template-columns: 1fr;
  }
}

.category-card {
  position: relative;
  padding: var(--space-xl);
  background: var(--color-white);
  border: 1px solid var(--color-gray-200);
  transition: all var(--duration-normal) var(--ease-out);
  cursor: pointer;
}

.category-card:hover {
  border-color: var(--color-black);
  transform: translateY(-4px);
  box-shadow: 0 10px 30px rgba(0,0,0,0.08);
}

.category-card.active {
  border-color: var(--color-black);
  box-shadow: inset 0 0 0 2px var(--color-black);
}

.category-card.active .cat-count {
  color: var(--color-black);
}

.cat-icon {
  font-size: 2rem;
  margin-bottom: var(--space-md);
}

.category-card h3 {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: var(--space-sm);
}

.category-card p {
  font-size: 0.85rem;
  color: var(--color-gray-600);
  line-height: 1.5;
}

.cat-count {
  position: absolute;
  top: var(--space-md);
  right: var(--space-md);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--color-gray-400);
}

/* ===== LIST HEADER ===== */
.list-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-xl);
  flex-wrap: wrap;
  gap: var(--space-md);
}

.filter-tabs {
  display: flex;
  gap: var(--space-xs);
}

.filter-tab {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.5rem 1rem;
  background: var(--color-gray-100);
  color: var(--color-gray-600);
  transition: all var(--duration-fast) ease;
}

.filter-tab:hover {
  background: var(--color-gray-200);
}

.filter-tab.active {
  background: var(--color-black);
  color: var(--color-white);
}

/* ===== STANDARDS TABLE ===== */
.standards-table {
  border: 1px solid var(--color-gray-200);
  background: var(--color-white);
}

.table-head {
  display: grid;
  grid-template-columns: 180px 1fr 80px 60px;
  padding: var(--space-md) var(--space-lg);
  background: var(--color-gray-100);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--color-gray-600);
}

@media (max-width: 768px) {
  .table-head {
    display: none;
  }
}

.table-row {
  display: grid;
  grid-template-columns: 180px 1fr 80px 60px;
  padding: var(--space-md) var(--space-lg);
  border-bottom: 1px solid var(--color-gray-200);
  transition: background var(--duration-fast) ease;
}

@media (max-width: 768px) {
  .table-row {
    grid-template-columns: 1fr;
    gap: var(--space-sm);
  }
}

.table-row:hover {
  background: var(--color-gray-50);
}

.table-row:last-child {
  border-bottom: none;
}

.col-num strong {
  font-family: var(--font-mono);
  font-size: 0.9rem;
}

.col-name {
  color: var(--color-gray-700);
}

@media (max-width: 768px) {
  .col-name {
    order: 2;
  }
}

.status-badge {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 700;
  padding: 0.2rem 0.5rem;
  background: var(--color-gray-200);
  color: var(--color-gray-600);
}

.status-badge.active {
  background: #dcfce7;
  color: #166534;
}

.status-badge.superseded {
  background: #fef3c7;
  color: #92400e;
}

.col-type {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-gray-500);
}

/* ===== PAGINATION ===== */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-lg);
  margin-top: var(--space-xl);
}

.page-btn {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 600;
  padding: 0.5rem 1rem;
  background: var(--color-white);
  border: 1px solid var(--color-gray-300);
  color: var(--color-gray-700);
  transition: all var(--duration-fast) ease;
}

.page-btn:hover:not(:disabled) {
  background: var(--color-black);
  border-color: var(--color-black);
  color: var(--color-white);
}

.page-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.page-info {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--color-gray-500);
}

/* ===== MOBILE RESPONSIVE ===== */
@media (max-width: 640px) {
  .search-box-large {
    flex-direction: column;
  }
  
  .search-box-large input {
    font-size: 1rem;
    padding: 0.75rem 1rem;
  }
  
  .search-box-large .btn {
    width: 100%;
    text-align: center;
  }
  
  .search-tags {
    gap: 4px;
  }
  
  .tag {
    font-size: 0.7rem;
    padding: 0.25rem 0.5rem;
  }
  
  .category-card {
    padding: var(--space-md);
  }
  
  .category-card h3 {
    font-size: 1rem;
  }
  
  /* Standards list mobile - card style */
  .table-row {
    padding: var(--space-md);
    position: relative;
    border-bottom: 1px solid var(--color-gray-200);
  }
  
  .col-num {
    font-size: 0.85rem;
  }
  
  .col-name {
    font-size: 0.9rem;
  }
  
  .status-badge {
    font-size: 0.6rem;
  }
  
  .list-header {
    flex-direction: column;
    align-items: flex-start;
  }
  
  .filter-tabs {
    flex-wrap: wrap;
  }
  
  .filter-tab {
    font-size: 0.7rem;
    padding: 0.4rem 0.75rem;
  }
  
  .pagination {
    gap: var(--space-sm);
  }
  
  .page-btn {
    padding: 0.4rem 0.75rem;
    font-size: 0.75rem;
  }
  
  /* Page header */
  .page-title {
    font-size: clamp(1.5rem, 6vw, 2.5rem);
  }
  
  .page-desc {
    font-size: 0.95rem;
  }
}

/* ===== Standard detail page ===== */
.standard-detail { max-width: 820px; margin: 0 auto; padding: 32px 0 48px; }
.back-link { display: inline-block; margin-bottom: 20px; color: var(--primary, #2563eb); font-size: 14px; }
.std-meta-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 14px; margin: 24px 0; }
.std-meta-item { background: #f7f9fc; border: 1px solid #e8edf3; border-radius: 10px; padding: 14px 16px; }
.std-meta-item span { display: block; font-size: 12px; color: #8a94a6; margin-bottom: 6px; }
.std-meta-item strong { font-size: 15px; color: #1f2a3a; }
.standard-detail h3 { margin: 28px 0 12px; font-size: 18px; color: #1f2a3a; }
.standard-detail p { line-height: 1.9; color: #3a4658; }
.std-keypoints { margin: 8px 0; padding-left: 22px; }
.std-keypoints li { line-height: 1.9; color: #3a4658; }
.std-disclaimer { margin-top: 32px; padding: 16px 18px; background: #fff8e6; border-left: 4px solid #f0b429; border-radius: 6px; font-size: 13px; color: #8a6d1a; }