/* ===== 全局样式 ===== */
:root {
  --primary: #6366f1;
  --primary-dark: #4f46e5;
  --sidebar-width: 260px;
  --sidebar-collapsed: 64px;
  --header-height: 64px;
}

* {
  scrollbar-width: thin;
  scrollbar-color: #c7d2fe transparent;
}

*::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

*::-webkit-scrollbar-track {
  background: transparent;
}

*::-webkit-scrollbar-thumb {
  background: #c7d2fe;
  border-radius: 3px;
}

*::-webkit-scrollbar-thumb:hover {
  background: #a5b4fc;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  background: #f5f3ff;
  overflow: hidden;
}

/* ===== 侧边栏 ===== */
.sidebar {
  width: var(--sidebar-width);
  transition: width 0.3s cubic-bezier(0.4, 0, 0.2, 1), transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  background: linear-gradient(180deg, #312e81 0%, #4338ca 50%, #6366f1 100%);
  will-change: width;
}

.sidebar.collapsed {
  width: var(--sidebar-collapsed);
}

.sidebar.collapsed .sidebar-label,
.sidebar.collapsed .sidebar-logo-text,
.sidebar.collapsed .sidebar-section-title {
  opacity: 0;
  width: 0;
  overflow: hidden;
  white-space: nowrap;
}

.sidebar-nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 16px;
  border-radius: 10px;
  color: rgba(255, 255, 255, 0.7);
  transition: all 0.2s ease;
  cursor: pointer;
  white-space: nowrap;
  overflow: hidden;
}

.sidebar-nav-item:hover {
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
}

.sidebar-nav-item.active {
  background: rgba(255, 255, 255, 0.2);
  color: #fff;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.sidebar-nav-item .icon {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.sidebar-label {
  transition: opacity 0.2s ease;
}

/* ===== 主内容区 ===== */
.main-content {
  margin-left: var(--sidebar-width);
  transition: margin-left 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  min-height: 100vh;
}

.sidebar.collapsed ~ .main-content {
  margin-left: var(--sidebar-collapsed);
}

/* ===== 卡片效果 ===== */
.card {
  background: #fff;
  border-radius: 16px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04), 0 1px 2px rgba(0, 0, 0, 0.06);
  transition: all 0.3s ease;
  border: 1px solid rgba(99, 102, 241, 0.05);
}

.card:hover {
  box-shadow: 0 10px 25px rgba(99, 102, 241, 0.08), 0 4px 10px rgba(0, 0, 0, 0.04);
}

.card-stat {
  position: relative;
  overflow: hidden;
}

.card-stat::before {
  content: '';
  position: absolute;
  top: -30px;
  right: -30px;
  width: 100px;
  height: 100px;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.1), rgba(139, 92, 246, 0.1));
}

/* ===== 表格 ===== */
.data-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
}

.data-table thead th {
  background: #f8f7ff;
  font-weight: 600;
  font-size: 0.8125rem;
  color: #6b7280;
  text-transform: none;
  padding: 12px 16px;
  text-align: left;
  border-bottom: 2px solid #e9e5ff;
  position: sticky;
  top: 0;
  z-index: 10;
}

.data-table tbody tr {
  transition: background 0.15s ease;
}

.data-table tbody tr:hover {
  background: #faf9ff;
}

.data-table tbody td {
  padding: 12px 16px;
  border-bottom: 1px solid #f3f0ff;
  font-size: 0.875rem;
  color: #374151;
}

.data-table tbody tr:last-child td {
  border-bottom: none;
}

/* ===== 加载动画 ===== */
.spinner {
  width: 36px;
  height: 36px;
  border: 3px solid #e0e7ff;
  border-top-color: #6366f1;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

.spinner-sm {
  width: 18px;
  height: 18px;
  border-width: 2px;
}

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

.skeleton {
  background: linear-gradient(90deg, #f0eeff 25%, #e8e5fc 50%, #f0eeff 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: 8px;
}

@keyframes shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* ===== Toast 通知 ===== */
.toast-container {
  position: fixed;
  top: 80px;
  right: 20px;
  z-index: 10000;
  display: flex;
  flex-direction: column;
  gap: 8px;
  pointer-events: none;
}

.toast {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 20px;
  border-radius: 12px;
  background: #fff;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.12), 0 2px 8px rgba(0, 0, 0, 0.08);
  font-size: 0.875rem;
  pointer-events: auto;
  animation: toastIn 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  max-width: 380px;
  border-left: 4px solid #6366f1;
}

.toast.success { border-left-color: #22c55e; }
.toast.error { border-left-color: #ef4444; }
.toast.warning { border-left-color: #f59e0b; }
.toast.info { border-left-color: #6366f1; }

.toast.removing {
  animation: toastOut 0.3s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

@keyframes toastIn {
  from { opacity: 0; transform: translateX(100px); }
  to { opacity: 1; transform: translateX(0); }
}

@keyframes toastOut {
  from { opacity: 1; transform: translateX(0); }
  to { opacity: 0; transform: translateX(100px); }
}

/* ===== 模态框 ===== */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(4px);
  z-index: 9000;
  animation: fadeIn 0.2s ease;
}

.modal-content {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: #fff;
  border-radius: 20px;
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.2);
  z-index: 9001;
  max-height: 85vh;
  overflow-y: auto;
  animation: modalIn 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  min-width: 400px;
  max-width: 90vw;
}

@keyframes modalIn {
  from { opacity: 0; transform: translate(-50%, -50%) scale(0.95); }
  to { opacity: 1; transform: translate(-50%, -50%) scale(1); }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.modal-content.closing {
  animation: modalOut 0.2s ease forwards;
}

.modal-backdrop.closing {
  animation: fadeOut 0.2s ease forwards;
}

@keyframes modalOut {
  to { opacity: 0; transform: translate(-50%, -50%) scale(0.95); }
}

@keyframes fadeOut {
  to { opacity: 0; }
}

/* ===== 按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: 10px;
  font-size: 0.875rem;
  font-weight: 500;
  transition: all 0.2s ease;
  cursor: pointer;
  border: none;
  outline: none;
  white-space: nowrap;
}

.btn:active { transform: scale(0.97); }

.btn-primary {
  background: linear-gradient(135deg, #6366f1, #8b5cf6);
  color: #fff;
  box-shadow: 0 2px 8px rgba(99, 102, 241, 0.3);
}

.btn-primary:hover {
  box-shadow: 0 4px 14px rgba(99, 102, 241, 0.4);
  filter: brightness(1.05);
}

.btn-secondary {
  background: #f3f0ff;
  color: #6366f1;
}

.btn-secondary:hover {
  background: #e8e5fc;
}

.btn-danger {
  background: #fef2f2;
  color: #ef4444;
}

.btn-danger:hover {
  background: #fee2e2;
}

.btn-ghost {
  background: transparent;
  color: #6b7280;
}

.btn-ghost:hover {
  background: #f3f4f6;
}

.btn-sm {
  padding: 5px 10px;
  font-size: 0.8125rem;
  border-radius: 8px;
}

/* ===== 表单 ===== */
.form-input {
  width: 100%;
  padding: 9px 14px;
  border: 1.5px solid #e5e7eb;
  border-radius: 10px;
  font-size: 0.875rem;
  transition: all 0.2s ease;
  outline: none;
  background: #fff;
}

.form-input:focus {
  border-color: #6366f1;
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.12);
}

.form-input::placeholder {
  color: #9ca3af;
}

.form-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='M6 8l4 4 4-4'/%3e%3c/svg%3e");
  background-position: right 10px center;
  background-repeat: no-repeat;
  background-size: 18px;
  padding-right: 36px;
}

/* ===== 标签 ===== */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 10px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 500;
}

.badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  flex-shrink: 0;
}

/* ===== 热门标记 ===== */
.hot-badge {
  background: linear-gradient(135deg, #f97316, #ef4444);
  color: #fff;
  padding: 2px 8px;
  border-radius: 12px;
  font-size: 0.6875rem;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 3px;
  animation: hotPulse 2s ease-in-out infinite;
}

@keyframes hotPulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(249, 115, 22, 0.4); }
  50% { box-shadow: 0 0 0 6px rgba(249, 115, 22, 0); }
}

/* ===== 分页 ===== */
.pagination {
  display: flex;
  align-items: center;
  gap: 4px;
}

.pagination button {
  min-width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid #e5e7eb;
  border-radius: 8px;
  background: #fff;
  color: #374151;
  font-size: 0.875rem;
  cursor: pointer;
  transition: all 0.2s ease;
}

.pagination button:hover:not(:disabled):not(.active) {
  background: #f3f0ff;
  border-color: #c7d2fe;
}

.pagination button.active {
  background: linear-gradient(135deg, #6366f1, #8b5cf6);
  color: #fff;
  border-color: transparent;
}

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

/* ===== 进度条 ===== */
.progress-bar {
  height: 6px;
  background: #e5e7eb;
  border-radius: 3px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  border-radius: 3px;
  background: linear-gradient(90deg, #6366f1, #8b5cf6);
  transition: width 0.5s ease;
}

/* ===== 脉冲点 ===== */
.pulse-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #22c55e;
  position: relative;
}

.pulse-dot::before {
  content: '';
  position: absolute;
  inset: -3px;
  border-radius: 50%;
  background: rgba(34, 197, 94, 0.3);
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.5); opacity: 0; }
}

/* ===== 全局加载条 ===== */
.global-loading-bar {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  background: linear-gradient(90deg, #6366f1, #a78bfa, #6366f1);
  background-size: 200% 100%;
  z-index: 99999;
  animation: loadingSlide 1.5s ease-in-out infinite;
  transition: width 0.3s ease;
}

@keyframes loadingSlide {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* ===== 选中高亮 ===== */
.checkbox-row {
  transition: background 0.15s ease;
}

.checkbox-row.selected {
  background: #f5f3ff !important;
}

/* ===== 日期选择器美化 ===== */
input[type="date"] {
  position: relative;
}

input[type="date"]::-webkit-calendar-picker-indicator {
  cursor: pointer;
  opacity: 0.6;
}

/* ===== 响应式 ===== */
@media (max-width: 768px) {
  .sidebar {
    position: fixed;
    z-index: 1000;
    transform: translateX(-100%);
  }
  .sidebar.mobile-open {
    transform: translateX(0);
  }
  .main-content {
    margin-left: 0 !important;
  }
}

/* ===== 视频卡片 ===== */
.video-card {
  border-radius: 16px;
  overflow: hidden;
  transition: all 0.3s ease;
  cursor: pointer;
}

.video-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 30px rgba(99, 102, 241, 0.12);
}

.video-card:hover .video-overlay {
  opacity: 1;
}

.video-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 40%, rgba(0, 0, 0, 0.6) 100%);
  opacity: 0;
  transition: opacity 0.3s ease;
}

/* ===== 切换动画 ===== */
.page-enter {
  animation: pageEnter 0.3s ease;
}

@keyframes pageEnter {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ===== 标签选择 ===== */
.tag-chip {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 0.8125rem;
  background: #f3f0ff;
  color: #6366f1;
  border: 1px solid #e0e7ff;
  transition: all 0.2s ease;
  cursor: pointer;
}

.tag-chip:hover {
  background: #e0e7ff;
}

.tag-chip .remove {
  width: 16px;
  height: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: rgba(99, 102, 241, 0.2);
  font-size: 0.625rem;
  cursor: pointer;
}

.tag-chip .remove:hover {
  background: rgba(239, 68, 68, 0.2);
  color: #ef4444;
}

/* ===== 时间线 ===== */
.timeline-item {
  position: relative;
  padding-left: 28px;
  padding-bottom: 20px;
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: 5px;
  top: 8px;
  bottom: -8px;
  width: 2px;
  background: #e0e7ff;
}

.timeline-item:last-child::before {
  display: none;
}

.timeline-item::after {
  content: '';
  position: absolute;
  left: 0;
  top: 6px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: #6366f1;
  border: 2px solid #e0e7ff;
}

/* ===== 空状态 ===== */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 48px 24px;
  color: #9ca3af;
}

.empty-state svg {
  width: 80px;
  height: 80px;
  margin-bottom: 16px;
  opacity: 0.4;
}