/* ============================================
   Nova Blog - 可复用 UI 组件样式
   Deep Space Cyber Components
   ============================================ */

/* ==================== 按钮系统 ==================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-lg);
  font-family: var(--font-sans);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  line-height: 1.5;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--duration-normal) var(--ease-default);
  background: rgba(18, 18, 42, 0.6);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  color: var(--color-text-primary);
  text-decoration: none;
  white-space: nowrap;
  user-select: none;
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--gradient-primary);
  opacity: 0;
  transition: opacity var(--duration-normal) var(--ease-default);
}

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

.btn:hover::before {
  opacity: 0.1;
}

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

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

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

/* 主按钮 */
.btn-primary {
  background: var(--gradient-primary);
  border-color: transparent;
  color: #fff;
}

.btn-primary:hover {
  box-shadow: var(--shadow-glow);
  filter: brightness(1.1);
}

.btn-primary::before {
  display: none;
}

/* 辅助按钮 */
.btn-secondary {
  background: rgba(253, 121, 168, 0.15);
  border-color: rgba(253, 121, 168, 0.3);
  color: var(--color-secondary);
}

.btn-secondary:hover {
  background: rgba(253, 121, 168, 0.25);
  border-color: rgba(253, 121, 168, 0.5);
  box-shadow: 0 0 20px rgba(253, 121, 168, 0.2);
}

/* 强调按钮 */
.btn-accent {
  background: rgba(0, 245, 212, 0.1);
  border-color: rgba(0, 245, 212, 0.3);
  color: var(--color-accent);
}

.btn-accent:hover {
  background: rgba(0, 245, 212, 0.2);
  border-color: rgba(0, 245, 212, 0.5);
  box-shadow: var(--shadow-accent-glow);
}

/* 危险按钮 */
.btn-danger {
  background: rgba(255, 107, 107, 0.1);
  border-color: rgba(255, 107, 107, 0.3);
  color: var(--color-danger);
}

.btn-danger:hover {
  background: rgba(255, 107, 107, 0.2);
  border-color: rgba(255, 107, 107, 0.5);
  box-shadow: var(--shadow-danger-glow);
}

/* 幽灵按钮 */
.btn-ghost {
  background: transparent;
  border-color: transparent;
  color: var(--color-text-secondary);
}

.btn-ghost:hover {
  background: rgba(108, 92, 231, 0.1);
  border-color: var(--color-border);
  color: var(--color-text-primary);
  box-shadow: none;
}

/* 按钮尺寸 */
.btn-sm {
  padding: var(--space-xs) var(--space-md);
  font-size: var(--font-size-xs);
  border-radius: var(--radius-sm);
}

.btn-lg {
  padding: var(--space-md) var(--space-xl);
  font-size: var(--font-size-lg);
  border-radius: var(--radius-lg);
}

/* 图标按钮 */
.btn-icon {
  width: 40px;
  height: 40px;
  padding: 0;
  border-radius: var(--radius-md);
}

.btn-icon.btn-sm {
  width: 32px;
  height: 32px;
}

.btn-icon.btn-lg {
  width: 48px;
  height: 48px;
}

/* ==================== 卡片系统 ==================== */

.card {
  background: var(--gradient-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  transition: all var(--duration-normal) var(--ease-default);
}

.card-hover {
  cursor: pointer;
}

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

.card-glow {
  position: relative;
}

.card-glow::after {
  content: '';
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  background: var(--gradient-border);
  z-index: -1;
  opacity: 0;
  transition: opacity var(--duration-normal) var(--ease-default);
}

.card-glow:hover::after {
  opacity: 1;
}

/* ==================== 标签系统 ==================== */

.tag {
  display: inline-flex;
  align-items: center;
  padding: 2px var(--space-sm);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  border-radius: var(--radius-sm);
  background: rgba(108, 92, 231, 0.1);
  color: var(--color-primary-light);
  border: 1px solid rgba(108, 92, 231, 0.2);
  transition: all var(--duration-fast) var(--ease-default);
  text-decoration: none;
}

.tag:hover {
  background: rgba(108, 92, 231, 0.2);
  border-color: rgba(108, 92, 231, 0.4);
  color: var(--color-primary-light);
}

.tag-primary {
  background: rgba(108, 92, 231, 0.15);
  color: var(--color-primary-light);
  border-color: rgba(108, 92, 231, 0.3);
}

.tag-accent {
  background: rgba(0, 245, 212, 0.1);
  color: var(--color-accent);
  border-color: rgba(0, 245, 212, 0.2);
}

.tag-accent:hover {
  background: rgba(0, 245, 212, 0.2);
  border-color: rgba(0, 245, 212, 0.4);
}

/* ==================== 输入框系统 ==================== */

.input,
.textarea,
.select {
  width: 100%;
  padding: var(--space-sm) var(--space-md);
  font-family: var(--font-sans);
  font-size: var(--font-size-sm);
  color: var(--color-text-primary);
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: all var(--duration-normal) var(--ease-default);
  outline: none;
}

.input:focus,
.textarea:focus,
.select:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(108, 92, 231, 0.2),
              0 0 15px rgba(108, 92, 231, 0.1);
}

.input::placeholder,
.textarea::placeholder {
  color: var(--color-text-muted);
}

.input:disabled,
.textarea:disabled,
.select:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.textarea {
  min-height: 120px;
  resize: vertical;
  line-height: var(--line-height-normal);
}

.select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%239D9DBF' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--space-md) center;
  padding-right: var(--space-2xl);
  cursor: pointer;
}

/* ==================== 模态框系统 ==================== */

.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(10, 10, 26, 0.8);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: var(--z-modal);
  animation: fadeIn var(--duration-fast) var(--ease-default);
  padding: var(--space-lg);
}

.modal {
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  width: 100%;
  max-width: 520px;
  max-height: 90vh;
  overflow-y: auto;
  animation: scaleIn var(--duration-normal) var(--ease-spring);
  box-shadow: var(--shadow-xl), var(--shadow-glow);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-lg);
  border-bottom: 1px solid var(--color-border);
}

.modal-header h3 {
  margin-bottom: 0;
  font-size: var(--font-size-lg);
}

.modal-body {
  padding: var(--space-lg);
}

.modal-footer {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--space-sm);
  padding: var(--space-lg);
  border-top: 1px solid var(--color-border);
}

.modal-close {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text-muted);
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-default);
  font-size: var(--font-size-lg);
}

.modal-close:hover {
  background: rgba(255, 107, 107, 0.1);
  border-color: rgba(255, 107, 107, 0.3);
  color: var(--color-danger);
}

/* ==================== Toast 通知系统 ==================== */

#toast-container {
  position: fixed;
  top: var(--space-lg);
  right: var(--space-lg);
  z-index: var(--z-toast);
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  pointer-events: none;
}

.toast {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-lg);
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text-primary);
  font-size: var(--font-size-sm);
  box-shadow: var(--shadow-lg);
  animation: slideInRight var(--duration-normal) var(--ease-spring);
  pointer-events: auto;
  min-width: 280px;
  max-width: 420px;
}

.toast-success {
  border-color: rgba(0, 245, 212, 0.3);
  background: linear-gradient(135deg, rgba(0, 245, 212, 0.1), var(--color-bg-secondary));
}

.toast-success::before {
  content: '\2713';
  color: var(--color-success);
  font-weight: bold;
  margin-right: var(--space-xs);
}

.toast-error {
  border-color: rgba(255, 107, 107, 0.3);
  background: linear-gradient(135deg, rgba(255, 107, 107, 0.1), var(--color-bg-secondary));
}

.toast-error::before {
  content: '\2717';
  color: var(--color-danger);
  font-weight: bold;
  margin-right: var(--space-xs);
}

.toast-warning {
  border-color: rgba(253, 203, 110, 0.3);
  background: linear-gradient(135deg, rgba(253, 203, 110, 0.1), var(--color-bg-secondary));
}

.toast-warning::before {
  content: '\26A0';
  color: var(--color-warning);
  margin-right: var(--space-xs);
}

.toast-info {
  border-color: rgba(116, 185, 255, 0.3);
  background: linear-gradient(135deg, rgba(116, 185, 255, 0.1), var(--color-bg-secondary));
}

.toast-info::before {
  content: '\2139';
  color: var(--color-info);
  margin-right: var(--space-xs);
}

.toast-exit {
  animation: route-leave-fade var(--duration-fast) var(--ease-default) forwards;
}

/* ==================== 分页系统 ==================== */

.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
  margin-top: var(--space-2xl);
}

.pagination-item {
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 36px;
  height: 36px;
  padding: 0 var(--space-sm);
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-default);
  text-decoration: none;
}

.pagination-item:hover {
  border-color: var(--color-border-hover);
  color: var(--color-text-primary);
  background: rgba(108, 92, 231, 0.1);
}

.pagination-active {
  background: var(--gradient-primary);
  border-color: transparent;
  color: #fff;
}

.pagination-active:hover {
  color: #fff;
  filter: brightness(1.1);
}

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

/* ==================== 开关组件 ==================== */

.switch {
  position: relative;
  display: inline-block;
  width: 44px;
  height: 24px;
}

.switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.switch-slider {
  position: absolute;
  cursor: pointer;
  inset: 0;
  background: var(--color-bg-tertiary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  transition: all var(--duration-normal) var(--ease-default);
}

.switch-slider::before {
  content: '';
  position: absolute;
  width: 18px;
  height: 18px;
  left: 2px;
  bottom: 2px;
  background: var(--color-text-muted);
  border-radius: 50%;
  transition: all var(--duration-normal) var(--ease-spring);
}

.switch input:checked + .switch-slider {
  background: rgba(108, 92, 231, 0.3);
  border-color: var(--color-primary);
}

.switch input:checked + .switch-slider::before {
  transform: translateX(20px);
  background: var(--color-primary);
  box-shadow: 0 0 8px rgba(108, 92, 231, 0.5);
}

/* ==================== 下拉菜单 ==================== */

.dropdown {
  position: relative;
  display: inline-block;
}

.dropdown-menu {
  position: absolute;
  top: calc(100% + var(--space-xs));
  left: 0;
  min-width: 180px;
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  z-index: var(--z-dropdown);
  animation: scaleIn var(--duration-fast) var(--ease-spring);
  transform-origin: top left;
  overflow: hidden;
}

.dropdown-item {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-default);
  border: none;
  background: none;
  width: 100%;
  text-align: left;
  font-family: var(--font-sans);
}

.dropdown-item:hover {
  background: rgba(108, 92, 231, 0.1);
  color: var(--color-text-primary);
}

.dropdown-item.danger {
  color: var(--color-danger);
}

.dropdown-item.danger:hover {
  background: rgba(255, 107, 107, 0.1);
}

/* ==================== 进度条 ==================== */

.progress {
  width: 100%;
  height: 6px;
  background: var(--color-bg-tertiary);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.progress-bar {
  height: 100%;
  background: var(--gradient-primary);
  border-radius: var(--radius-full);
  transition: width var(--duration-slow) var(--ease-default);
}

/* ==================== 骨架屏 ==================== */

.skeleton {
  background: linear-gradient(
    90deg,
    var(--color-bg-tertiary) 25%,
    rgba(108, 92, 231, 0.08) 50%,
    var(--color-bg-tertiary) 75%
  );
  background-size: 200px 100%;
  animation: skeleton-loading 1.5s ease-in-out infinite;
  border-radius: var(--radius-md);
}

.skeleton-text {
  height: 14px;
  margin-bottom: var(--space-sm);
  border-radius: var(--radius-sm);
}

.skeleton-text:last-child {
  width: 60%;
}

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

/* ==================== 表格系统 ==================== */

.table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  overflow: hidden;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
}

.table-header {
  background: var(--color-bg-tertiary);
}

.table-header .table-cell {
  font-weight: var(--font-weight-medium);
  color: var(--color-text-primary);
  font-size: var(--font-size-sm);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.table-row {
  transition: background var(--duration-fast) var(--ease-default);
}

.table-row:hover {
  background: rgba(108, 92, 231, 0.05);
}

.table-row:not(:last-child) .table-cell {
  border-bottom: 1px solid var(--color-border);
}

.table-cell {
  padding: var(--space-md);
  text-align: left;
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
}

/* ==================== 徽章系统 ==================== */

.badge {
  display: inline-flex;
  align-items: center;
  padding: 2px 8px;
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  border-radius: var(--radius-full);
  line-height: 1.5;
}

.badge-primary {
  background: rgba(108, 92, 231, 0.15);
  color: var(--color-primary-light);
}

.badge-success {
  background: var(--color-success-bg);
  color: var(--color-success);
}

.badge-warning {
  background: var(--color-warning-bg);
  color: var(--color-warning);
}

.badge-danger {
  background: var(--color-danger-bg);
  color: var(--color-danger);
}

/* ==================== 加载系统 ==================== */

.spinner {
  width: 32px;
  height: 32px;
  border: 3px solid var(--color-border);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

.spinner-sm {
  width: 20px;
  height: 20px;
  border-width: 2px;
}

.spinner-lg {
  width: 48px;
  height: 48px;
  border-width: 4px;
}

.loading-overlay {
  position: fixed;
  inset: 0;
  background: rgba(10, 10, 26, 0.7);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: var(--z-overlay);
  flex-direction: column;
  gap: var(--space-md);
}

.loading-overlay .spinner {
  border-width: 4px;
  width: 48px;
  height: 48px;
}

.loading-overlay span {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
}

/* ==================== 空状态 ==================== */

.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-4xl);
  text-align: center;
}

.empty-state-icon {
  font-size: 64px;
  margin-bottom: var(--space-lg);
  opacity: 0.3;
}

.empty-state-title {
  font-size: var(--font-size-xl);
  color: var(--color-text-primary);
  margin-bottom: var(--space-sm);
}

.empty-state-desc {
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
  margin-bottom: var(--space-lg);
}

/* ==================== 确认对话框 ==================== */

.confirm-overlay {
  position: fixed;
  inset: 0;
  background: rgba(10, 10, 26, 0.8);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: var(--z-modal);
  animation: fadeIn var(--duration-fast) var(--ease-default);
}

.confirm-dialog {
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
  max-width: 400px;
  width: 100%;
  animation: scaleIn var(--duration-normal) var(--ease-spring);
  box-shadow: var(--shadow-xl);
  text-align: center;
}

.confirm-dialog h3 {
  margin-bottom: var(--space-md);
}

.confirm-dialog p {
  color: var(--color-text-secondary);
  margin-bottom: var(--space-lg);
}

.confirm-actions {
  display: flex;
  gap: var(--space-sm);
  justify-content: center;
}