/* ============================================
   TokenDistro - 组件样式（优化版）
   ============================================ */

/* ========================================
   卡片
   ======================================== */
.card {
  background: #fff;
  border: 1px solid #f0f0f0;
  border-radius: 12px;
  padding: 24px;
  transition: all 0.15s ease;
}

.card:hover {
  border-color: #e0e0e0;
  background: #fafafa;
}

/* ========================================
   模型卡片
   ======================================== */
.model-card {
  display: flex;
  flex-direction: column;
  height: 100%;
  min-height: 280px;
}

.model-card-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}

.model-card-logo {
  width: 40px;
  height: 40px;
  border-radius: 8px;
  object-fit: contain;
  background: #f5f5f5;
  padding: 8px;
}

.model-card-title h3 {
  font-size: 18px;
  font-weight: 600;
  color: #1a1a1a;
  margin: 0 0 4px 0;
}

.model-card-provider {
  font-size: 13px;
  color: #999;
}

.model-card-description {
  font-size: 14px;
  color: #666;
  line-height: 1.5;
  margin-bottom: 16px;
  flex: 1;
}

.model-card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
}

.model-card-specs {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 16px;
  padding-top: 16px;
  border-top: 1px solid #f0f0f0;
}

.model-card-spec {
  font-size: 13px;
  color: #666;
  display: flex;
  align-items: center;
  gap: 6px;
}

.model-card-spec svg {
  width: 14px;
  height: 14px;
  opacity: 0.6;
}

.model-card-footer {
  display: flex;
  justify-content: flex-end;
  padding-top: 16px;
  border-top: 1px solid #f0f0f0;
  margin-top: auto;
}

/* ========================================
   标签
   ======================================== */
.tag {
  display: inline-flex;
  padding: 4px 12px;
  font-size: 12px;
  font-weight: 500;
  border-radius: 6px;
}

.tag-primary {
  background: #f5f3ff;
  color: #7c3aed;
}

.tag-secondary {
  background: #f5f5f5;
  color: #666;
}

.tag-success {
  background: #f0fdf4;
  color: #16a34a;
}

/* ========================================
   按钮
   ======================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  font-size: 14px;
  font-weight: 600;
  border-radius: 8px;
  border: none;
  cursor: pointer;
  transition: all 0.15s ease;
  text-decoration: none;
}

.btn svg {
  width: 16px;
  height: 16px;
}

.btn-sm {
  padding: 6px 12px;
  font-size: 13px;
}

.btn-lg {
  padding: 14px 28px;
  font-size: 16px;
}

.btn-primary {
  background: #7c3aed;
  color: #fff;
}

.btn-primary:hover {
  background: #6d28d9;
  color: #fff;
}

.btn-secondary {
  background: #f5f5f5;
  color: #666;
  border: 1px solid #e5e5e5;
}

.btn-secondary:hover {
  background: #e5e5e5;
  color: #1a1a1a;
}

.btn-ghost {
  background: transparent;
  color: #666;
}

.btn-ghost:hover {
  background: #f5f5f5;
  color: #1a1a1a;
}

.btn-outline {
  background: transparent;
  color: #7c3aed;
  border: 2px solid #7c3aed;
}

.btn-outline:hover {
  background: #7c3aed;
  color: #fff;
}

/* ========================================
   表单元素
   ======================================== */
.form-input {
  width: 100%;
  padding: 10px 16px;
  font-size: 14px;
  border: 1px solid #e5e5e5;
  border-radius: 6px;
  background: #fff;
  color: #1a1a1a;
  transition: border-color 0.15s;
}

.form-input:focus {
  outline: none;
  border-color: #7c3aed;
}

.form-select {
  width: 100%;
  padding: 10px 16px;
  font-size: 14px;
  border: 1px solid #e5e5e5;
  border-radius: 6px;
  background: #fff;
  color: #1a1a1a;
  cursor: pointer;
}

/* ========================================
   空状态
   ======================================== */
.empty-state {
  text-align: center;
  padding: 48px 24px;
  color: #666;
}

.empty-state-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 24px;
  color: #ccc;
}

.empty-state-title {
  font-size: 18px;
  font-weight: 600;
  color: #1a1a1a;
  margin-bottom: 8px;
}

.empty-state-description {
  font-size: 14px;
  color: #666;
}

/* 搜索空状态 */
.search-empty {
  text-align: center;
  padding: 48px 24px;
  color: var(--color-text-tertiary);
}

.search-empty-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 64px;
  height: 64px;
  margin: 0 auto 16px;
  border-radius: 50%;
  background: var(--color-bg-secondary);
  color: var(--color-primary-400);
  font-size: 28px;
}

.search-empty-icon svg {
  width: 28px;
  height: 28px;
}

.search-empty-text {
  font-size: 14px;
  color: var(--color-text-tertiary);
}

/* ========================================
   搜索结果列表
   ======================================== */
.search-results {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.search-section {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.search-section-header {
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-tertiary);
  padding: 0 4px 6px;
  border-bottom: 1px solid var(--color-primary-100);
}

.search-section-list {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.result-item {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  padding: 10px 12px;
  background: transparent;
  border: none;
  border-radius: 10px;
  cursor: pointer;
  text-align: left;
  transition: background 0.15s ease;
}

.result-item:hover {
  background: var(--color-accent-50);
}

.result-item:focus-visible {
  outline: 2px solid var(--color-accent-500);
  outline-offset: -2px;
}

.result-item .provider-logo {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  flex-shrink: 0;
}

.result-info {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
  flex: 1;
}

.result-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.result-subtitle {
  font-size: 13px;
  color: var(--color-text-secondary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ========================================
   搜索框
   ======================================== */
.search-box {
  position: relative;
  display: flex;
  align-items: center;
  background: #fff;
  border: 2px solid #e5e5e5;
  border-radius: 12px;
  padding: 4px 4px 4px 0;
  transition: border-color 0.15s;
}

.search-box:focus-within {
  border-color: #7c3aed;
}

.search-box-icon {
  position: absolute;
  left: 16px;
  color: #999;
  pointer-events: none;
}

.search-box-icon svg {
  width: 20px;
  height: 20px;
}

.search-box-input {
  flex: 1;
  padding: 12px 16px 12px 48px;
  border: none;
  background: transparent;
  font-size: 16px;
  color: #1a1a1a;
  outline: none;
}

.search-box-input::placeholder {
  color: #999;
}

/* ========================================
   Toast 提示
   ======================================== */
.toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 9999;
}

.toast {
  position: fixed;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 20px;
  background: #1a1a1a;
  color: #fff;
  border-radius: 8px;
  font-size: 14px;
  z-index: 9999;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease, transform 0.25s ease;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
  white-space: nowrap;
  max-width: calc(100vw - 32px);
}

.toast.active {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.toast-success {
  background: #16a34a;
}

.toast-error {
  background: #dc2626;
}

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

/* ========================================
   对比面板
   ======================================== */
.compare-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 1000;
}

.compare-overlay.active {
  display: flex;
  align-items: center;
  justify-content: center;
}

.compare-panel {
  width: 90%;
  max-width: 960px;
  max-height: 80vh;
  background: #fff;
  border-radius: 12px;
  overflow: auto;
}

.compare-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px;
  border-bottom: 1px solid #f0f0f0;
}

.compare-title {
  font-size: 20px;
  font-weight: 700;
}

.compare-close {
  width: 32px;
  height: 32px;
  border-radius: 6px;
  background: #f5f5f5;
  border: none;
  cursor: pointer;
}

.compare-table {
  width: 100%;
  border-collapse: collapse;
}

.compare-table th,
.compare-table td {
  padding: 12px 16px;
  border-bottom: 1px solid #f0f0f0;
  text-align: left;
}

.compare-table th {
  background: #fafafa;
  font-weight: 600;
  font-size: 13px;
  color: #666;
}

.compare-table td {
  font-size: 14px;
}

/* ========================================
   搜索模态框
   ======================================== */
.search-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  z-index: 1000;
}

.search-overlay.active {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding-top: 120px;
}

.search-modal {
  width: 90%;
  max-width: 640px;
  background: #fff;
  border-radius: 12px;
  overflow: hidden;
}

.search-modal-input {
  width: 100%;
  padding: 20px;
  font-size: 18px;
  border: none;
  border-bottom: 1px solid #f0f0f0;
  outline: none;
}

.search-results {
  max-height: 400px;
  overflow: auto;
}

.search-result-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px 20px;
  cursor: pointer;
  transition: background 0.15s;
}

.search-result-item:hover {
  background: #f5f5f5;
}

.search-result-logo {
  width: 32px;
  height: 32px;
  border-radius: 6px;
}

.search-result-title {
  font-size: 16px;
  font-weight: 600;
  color: #1a1a1a;
}

.search-result-subtitle {
  font-size: 13px;
  color: #666;
}

/* ========================================
   模态框
   ======================================== */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.65);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  z-index: 1000;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.modal-overlay.active {
  display: flex;
}

.modal {
  width: 100%;
  max-width: 640px;
  max-height: calc(100vh - 40px);
  background: #fff;
  border-radius: 16px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  animation: modalIn 0.2s ease-out;
}

@keyframes modalIn {
  from {
    opacity: 0;
    transform: translateY(20px) scale(0.96);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px;
  border-bottom: 1px solid #f0f0f0;
}

.modal-title {
  font-size: 20px;
  font-weight: 700;
  color: #1a1a1a;
}

.modal-close {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: #f5f5f5;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #666;
  font-size: 18px;
  transition: all 0.15s;
  flex-shrink: 0;
}

.modal-close:hover {
  background: #e5e5e5;
  color: #1a1a1a;
}

.modal-body {
  padding: 20px;
  overflow: auto;
  flex: 1;
}

.modal-footer {
  display: flex;
  gap: 12px;
  padding: 20px;
  border-top: 1px solid #f0f0f0;
  justify-content: flex-end;
}

/* ========================================
   筛选器栏
   ======================================== */
.filters-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: flex-end;
  margin-bottom: 20px;
  padding: 16px;
  background: var(--color-bg-secondary);
  border-radius: 12px;
  border: 1px solid var(--color-primary-200);
}

.filter-group {
  display: flex;
  flex-direction: column;
  gap: 4px;
  flex: 1;
  min-width: 140px;
}

.filter-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.filter-select {
  padding: 8px 12px;
  font-size: 14px;
  min-width: auto;
}

/* ========================================
   自定义下拉筛选器
   ======================================== */
.filter-group {
  position: relative;
}

.filter-group select {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
}

.custom-select {
  position: relative;
  width: 100%;
}

.custom-select-trigger {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  width: 100%;
  padding: 9px 14px;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text-primary);
  background: var(--color-bg-primary);
  border: 1px solid var(--color-primary-200);
  border-radius: 8px;
  cursor: pointer;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
  white-space: nowrap;
  overflow: hidden;
}

.custom-select-trigger:hover {
  border-color: var(--color-accent-400);
}

.custom-select.open .custom-select-trigger {
  border-color: var(--color-accent-500);
  box-shadow: 0 0 0 3px var(--color-accent-100);
}

.custom-select-value {
  overflow: hidden;
  text-overflow: ellipsis;
}

.custom-select-arrow {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 16px;
  color: var(--color-text-tertiary);
  transition: transform 0.2s ease;
}

.custom-select.open .custom-select-arrow {
  transform: rotate(180deg);
}

.custom-select-dropdown {
  position: absolute;
  top: calc(100% + 6px);
  left: 0;
  right: 0;
  z-index: 100;
  max-height: 280px;
  overflow-y: auto;
  padding: 6px;
  background: var(--color-bg-primary);
  border: 1px solid var(--color-primary-200);
  border-radius: 10px;
  box-shadow: 0 12px 32px rgba(15, 23, 42, 0.12);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: opacity 0.18s ease, transform 0.18s ease, visibility 0.18s;
}

.custom-select.open .custom-select-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.custom-select-option {
  display: flex;
  align-items: center;
  padding: 9px 12px;
  font-size: 14px;
  color: var(--color-text-primary);
  border-radius: 6px;
  cursor: pointer;
  transition: background 0.12s ease;
}

.custom-select-option:hover {
  background: var(--color-accent-50);
}

.custom-select-option.selected {
  background: var(--color-accent-100);
  color: var(--color-accent-700);
  font-weight: 600;
}

.filter-stats {
  font-size: 14px;
  color: var(--color-text-secondary);
  margin-bottom: 16px;
}

.filter-stats strong {
  color: var(--color-text-primary);
}

.filter-empty {
  text-align: center;
  padding: 48px 20px;
  color: var(--color-text-tertiary);
}

.filter-empty-icon {
  font-size: 48px;
  margin-bottom: 12px;
  opacity: 0.4;
}

/* ========================================
   分页
   ======================================== */
.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
  margin-top: 32px;
}

.pagination-btn {
  min-width: 36px;
  height: 36px;
  padding: 0 10px;
  border: 1px solid var(--color-primary-200);
  background: var(--color-bg-primary);
  color: var(--color-text-primary);
  border-radius: 8px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
}

.pagination-btn:hover:not(:disabled) {
  border-color: var(--color-accent-500);
  color: var(--color-accent-600);
}

.pagination-btn.active {
  background: var(--color-accent-600);
  border-color: var(--color-accent-600);
  color: #fff;
}

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

.pagination-ellipsis {
  padding: 0 4px;
  color: var(--color-text-tertiary);
}

/* ========================================
   关于平台区域
   ======================================== */
.about-section {
  background: linear-gradient(180deg, var(--color-bg-primary) 0%, var(--color-accent-50) 100%);
}

.about-intro {
  max-width: 760px;
  margin: 0 auto 48px;
  text-align: center;
}

.about-intro-text {
  font-size: 17px;
  line-height: 1.7;
  color: var(--color-text-secondary);
}

.about-intro-text strong {
  color: var(--color-text-primary);
  font-weight: 600;
}

.about-features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-bottom: 56px;
}

.about-feature-card {
  text-align: center;
  padding: 28px 20px;
  background: var(--color-bg-primary);
  border-radius: 16px;
  border: 1px solid var(--color-primary-200);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.about-feature-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(124, 58, 237, 0.1);
}

.about-feature-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-accent-100);
  border-radius: 14px;
  color: var(--color-accent-600);
}

.about-feature-icon svg {
  width: 28px;
  height: 28px;
}

.about-feature-title {
  font-size: 17px;
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: 8px;
}

.about-feature-desc {
  font-size: 14px;
  line-height: 1.5;
  color: var(--color-text-secondary);
}

/* 指标条 */
.about-metrics-bar {
  display: flex;
  justify-content: center;
  align-items: stretch;
  gap: 0;
  margin-bottom: 56px;
  padding: 32px;
  background: var(--color-primary-900);
  border-radius: 20px;
  color: #fff;
}

.about-metric {
  flex: 1;
  text-align: center;
  padding: 0 16px;
}

.about-metric-value {
  display: block;
  font-size: 40px;
  font-weight: 800;
  line-height: 1;
  background: linear-gradient(135deg, var(--color-accent-400), var(--color-accent-200));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.about-metric-label {
  display: block;
  margin-top: 8px;
  font-size: 13px;
  color: var(--color-primary-300);
}

.about-metric-divider {
  width: 1px;
  background: var(--color-primary-700);
}

/* FAQ */
.about-faq {
  max-width: 760px;
  margin: 0 auto 48px;
}

.about-faq-title {
  text-align: center;
  font-size: 24px;
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: 24px;
}

.faq-item {
  background: var(--color-bg-primary);
  border: 1px solid var(--color-primary-200);
  border-radius: 12px;
  margin-bottom: 12px;
  overflow: hidden;
  transition: box-shadow 0.2s ease;
}

.faq-item[open] {
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 24px;
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text-primary);
  cursor: pointer;
  list-style: none;
}

.faq-question::-webkit-details-marker {
  display: none;
}

.faq-question::after {
  content: "+";
  font-size: 22px;
  font-weight: 300;
  color: var(--color-accent-500);
  transition: transform 0.2s ease;
}

.faq-item[open] .faq-question::after {
  transform: rotate(45deg);
}

.faq-answer {
  padding: 0 24px 20px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--color-text-secondary);
}

/* CTA */
.about-cta {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

/* ========================================
   模型详情模态框
   ======================================== */
.model-detail-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 20px;
}

.model-detail-logo {
  width: 56px;
  height: 56px;
  border-radius: 12px;
  flex-shrink: 0;
}

.model-detail-info {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.model-detail-info h3 {
  font-size: 22px;
  font-weight: 700;
}

.model-detail-provider {
  font-size: 14px;
  color: var(--color-text-secondary);
}

.model-detail-desc {
  font-size: 15px;
  line-height: 1.6;
  color: var(--color-text-secondary);
  margin-bottom: 16px;
}

.model-detail-caps {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 20px;
}

.model-detail-specs {
  background: var(--color-bg-secondary);
  border-radius: 12px;
  padding: 4px 16px;
  margin-bottom: 20px;
}

.model-detail-spec-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 0;
  border-bottom: 1px solid var(--color-primary-100);
}

.model-detail-spec-row:last-child {
  border-bottom: none;
}

.model-detail-spec-label {
  font-size: 14px;
  color: var(--color-text-secondary);
}

.model-detail-spec-value {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text-primary);
}

.model-detail-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}