/**
 * Unified Components System
 *
 * 统一的UI组件库，包含 Button、Badge、Dropdown、Input 等
 * 基于 shadcn/ui 设计规范，适配 Light/Dark Theme
 */

/* ==================== Button System ==================== */

.unified-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-2);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  line-height: var(--leading-tight);
  border-radius: var(--radius-lg);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
  white-space: nowrap;
  user-select: none;
}

.unified-button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  pointer-events: none;
}

/* Button Sizes */
.unified-button-sm {
  height: 32px;
  padding: 0 var(--spacing-3);
  font-size: var(--text-xs);
}

.unified-button-md {
  height: 36px;
  padding: 0 var(--spacing-4);
}

.unified-button-lg {
  height: 44px;
  padding: 0 var(--spacing-6);
  font-size: var(--text-base);
}

/* Button Variants */
.unified-button-primary {
  background-color: var(--brand-primary);
  color: var(--text-inverse);
  border-color: var(--brand-primary);
}

.unified-button-primary:hover {
  background-color: var(--brand-primary-hover);
  border-color: var(--brand-primary-hover);
}

.unified-button-secondary {
  background-color: var(--bg-secondary);
  color: var(--text-primary);
  border-color: var(--border-primary);
}

.unified-button-secondary:hover {
  background-color: var(--bg-tertiary);
  border-color: var(--border-secondary);
}

.unified-button-outline {
  background-color: transparent;
  color: var(--text-primary);
  border-color: var(--border-primary);
}

.unified-button-outline:hover {
  background-color: var(--bg-hover);
  border-color: var(--border-secondary);
}

.unified-button-ghost {
  background-color: transparent;
  color: var(--text-secondary);
  border-color: transparent;
}

.unified-button-ghost:hover {
  background-color: var(--bg-hover);
  color: var(--text-primary);
}

.unified-button-danger {
  background-color: var(--danger);
  color: var(--text-inverse);
  border-color: var(--danger);
}

.unified-button-danger:hover {
  background-color: #dc2626;
  border-color: #dc2626;
}

/* Button Icons */
.unified-button svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

.unified-button-sm svg {
  width: 14px;
  height: 14px;
}

.unified-button-lg svg {
  width: 18px;
  height: 18px;
}

/* ==================== Badge System ==================== */

.unified-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 var(--spacing-2);
  height: 20px;
  font-size: var(--text-xs);
  font-weight: var(--font-medium);
  line-height: var(--leading-none);
  border-radius: var(--radius-full);
  white-space: nowrap;
}

/* Badge Variants */
.unified-badge-default {
  background-color: var(--bg-secondary);
  color: var(--text-secondary);
}

.unified-badge-primary {
  background-color: rgba(0, 122, 255, 0.1);
  color: var(--brand-primary);
}

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

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

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

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

/* ==================== Dropdown System ==================== */

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

.unified-dropdown-trigger {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-2);
  height: 36px;
  padding: 0 var(--spacing-3);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--text-secondary);
  background-color: transparent;
  border: none;
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.unified-dropdown-trigger:hover {
  background-color: var(--bg-hover);
  color: var(--text-primary);
}

.unified-dropdown-trigger svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

.unified-dropdown-menu {
  position: absolute;
  top: calc(100% + var(--spacing-2));
  right: 0;
  min-width: 160px;
  background-color: var(--text-inverse);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: var(--spacing-1);
  z-index: var(--z-dropdown);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: all var(--transition-fast);
}

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

.unified-dropdown-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
  padding: var(--spacing-2) var(--spacing-3);
  font-size: var(--text-sm);
  color: var(--text-secondary);
  background-color: transparent;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  text-align: left;
  width: 100%;
  transition: all var(--transition-fast);
}

.unified-dropdown-item:hover {
  background-color: var(--bg-hover);
  color: var(--text-primary);
}

.unified-dropdown-item.active {
  color: var(--text-primary);
  font-weight: var(--font-medium);
}

.unified-dropdown-item svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

.unified-dropdown-separator {
  height: 1px;
  background-color: var(--border-primary);
  margin: var(--spacing-1) 0;
}

/* ==================== Input System ==================== */

.unified-input {
  display: block;
  width: 100%;
  height: 36px;
  padding: 0 var(--spacing-3);
  font-size: var(--text-sm);
  color: var(--text-primary);
  background-color: var(--bg-base);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-lg);
  outline: none;
  transition: all var(--transition-fast);
}

.unified-input:hover {
  border-color: var(--border-secondary);
}

.unified-input:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px rgba(0, 122, 255, 0.1);
}

.unified-input:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  background-color: var(--bg-secondary);
}

.unified-input::placeholder {
  color: var(--text-quaternary);
}

/* Input Sizes */
.unified-input-sm {
  height: 32px;
  font-size: var(--text-xs);
}

.unified-input-lg {
  height: 44px;
  font-size: var(--text-base);
}

/* ==================== Textarea ==================== */

.unified-textarea {
  display: block;
  width: 100%;
  min-height: 80px;
  padding: var(--spacing-3);
  font-size: var(--text-sm);
  color: var(--text-primary);
  background-color: var(--bg-base);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-lg);
  outline: none;
  resize: vertical;
  line-height: var(--leading-relaxed);
  font-family: var(--font-sans);
  transition: all var(--transition-fast);
}

.unified-textarea:hover {
  border-color: var(--border-secondary);
}

.unified-textarea:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px rgba(0, 122, 255, 0.1);
}

/* ==================== Checkbox & Radio ==================== */

.unified-checkbox,
.unified-radio {
  width: 18px;
  height: 18px;
  border: 2px solid var(--border-secondary);
  background-color: var(--bg-base);
  cursor: pointer;
  transition: all var(--transition-fast);
  appearance: none;
  -webkit-appearance: none;
  position: relative;
}

.unified-checkbox {
  border-radius: var(--radius-sm);
}

.unified-radio {
  border-radius: var(--radius-full);
}

.unified-checkbox:checked,
.unified-radio:checked {
  background-color: var(--brand-primary);
  border-color: var(--brand-primary);
}

.unified-checkbox:checked::after {
  content: '';
  position: absolute;
  left: 4px;
  top: 1px;
  width: 6px;
  height: 10px;
  border: solid var(--card-bg);
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}

.unified-radio:checked::after {
  content: '';
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  width: 8px;
  height: 8px;
  background-color: var(--text-inverse);
  border-radius: var(--radius-full);
}

/* ==================== Switch ==================== */

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

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

.unified-switch-slider {
  position: absolute;
  cursor: pointer;
  inset: 0;
  background-color: var(--bg-tertiary);
  border-radius: var(--radius-full);
  transition: var(--transition-base);
}

.unified-switch-slider::before {
  content: '';
  position: absolute;
  height: 18px;
  width: 18px;
  left: 3px;
  bottom: 3px;
  background-color: var(--text-inverse);
  border-radius: var(--radius-full);
  transition: var(--transition-base);
}

.unified-switch input:checked + .unified-switch-slider {
  background-color: var(--brand-primary);
}

.unified-switch input:checked + .unified-switch-slider::before {
  transform: translateX(20px);
}

/* ==================== Separator ==================== */

.unified-separator {
  border: none;
  border-top: 1px solid var(--border-primary);
  margin: var(--spacing-4) 0;
}

.unified-separator-vertical {
  width: 1px;
  height: 100%;
  background-color: var(--border-primary);
  margin: 0 var(--spacing-4);
}

/* ==================== Dark Theme Adjustments ==================== */

[data-theme="dark"] .unified-dropdown-menu {
  background-color: var(--bg-secondary);
  border-color: var(--border-primary);
}

[data-theme="dark"] .unified-input,
[data-theme="dark"] .unified-textarea {
  background-color: var(--bg-secondary);
}

[data-theme="dark"] .unified-checkbox,
[data-theme="dark"] .unified-radio {
  background-color: var(--bg-secondary);
}

[data-theme="dark"] .unified-input:focus,
[data-theme="dark"] .unified-textarea:focus {
  box-shadow: 0 0 0 3px rgba(96, 165, 250, 0.15);
}