/* ========================================
   HMC 数据平台 - 全局样式
   ======================================== */

/* CSS 变量 */
:root {
  /* 颜色系统 */
  --color-primary: #0891B2;
  --color-primary-hover: #0e7490;
  --color-primary-light: #f0fdfa;
  
  --color-success: #22C55E;
  --color-warning: #F59E0B;
  --color-danger: #EF4444;
  
  --color-text: #1e293b;
  --color-text-muted: #64748b;
  --color-border: #e2e8f0;
  
  --color-bg: #f8fafc;
  --color-bg-card: #ffffff;
  
  /* 阴影 */
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow: 0 1px 3px rgba(0,0,0,0.1), 0 1px 2px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 6px rgba(0,0,0,0.1);
  
  /* 圆角 */
  --radius-sm: 4px;
  --radius: 8px;
  --radius-lg: 12px;
  
  /* 过渡 */
  --transition: 0.2s ease;
}

/* 重置 */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.5;
  min-height: 100vh;
}

/* 导航栏 */
.navbar {
  background: var(--color-bg-card);
  box-shadow: var(--shadow);
  padding: 0 24px;
  display: flex;
  align-items: center;
  height: 56px;
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav-brand {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-primary);
  margin-right: 48px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-brand svg {
  width: 24px;
  height: 24px;
}

.nav-menu {
  list-style: none;
  display: flex;
  gap: 4px;
  margin: 0;
  padding: 0;
}

.nav-item {
  position: relative;
}

.nav-link {
  display: block;
  padding: 16px 20px;
  color: var(--color-text-muted);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  transition: all var(--transition);
  border-radius: var(--radius-sm);
}

.nav-link:hover {
  color: var(--color-primary);
  background: var(--color-primary-light);
}

.nav-link.active {
  color: var(--color-primary);
  background: var(--color-primary-light);
}

/* 主容器 */
.main-content {
  padding: 24px;
  max-width: 1280px;
  margin: 0 auto;
}

/* 页面标题 */
.page-header {
  margin-bottom: 24px;
}

.page-title {
  font-size: 24px;
  font-weight: 600;
  color: var(--color-text);
}

/* 卡片 */
.card {
  background: var(--color-bg-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  padding: 24px;
  margin-bottom: 24px;
}

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 8px 16px;
  font-size: 14px;
  font-weight: 500;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-primary {
  background: var(--color-primary);
  color: white;
}

.btn-primary:hover:not(:disabled) {
  background: var(--color-primary-hover);
}

.btn-secondary {
  background: var(--color-bg-card);
  color: var(--color-text);
  border: 1px solid var(--color-border);
}

.btn-secondary:hover:not(:disabled) {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.btn-danger {
  background: var(--color-danger);
  color: white;
}

.btn-danger:hover:not(:disabled) {
  background: #dc2626;
}

.btn-sm {
  padding: 4px 8px;
  font-size: 13px;
}

/* 输入框 */
.input {
  padding: 8px 12px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 14px;
  transition: all var(--transition);
  width: 100%;
}

.input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(8, 145, 178, 0.1);
}

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

/* 选择框 */
.select {
  padding: 8px 32px 8px 12px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 14px;
  background: white url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2364748b' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E") right 12px center no-repeat;
  cursor: pointer;
  transition: all var(--transition);
}

.select:focus {
  outline: none;
  border-color: var(--color-primary);
}

/* 表单组 */
.form-group {
  margin-bottom: 16px;
}

.form-label {
  display: block;
  margin-bottom: 6px;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text);
}

/* 表格 */
.table {
  width: 100%;
  border-collapse: collapse;
}

.table th,
.table td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--color-border);
}

.table th {
  background: var(--color-bg);
  font-weight: 600;
  font-size: 13px;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.025em;
}

.table tr:hover {
  background: var(--color-bg);
}

.table .price {
  font-family: 'SF Mono', 'Fira Code', Consolas, monospace;
}

/* 工具栏 */
.toolbar {
  display: flex;
  gap: 12px;
  align-items: center;
  flex-wrap: wrap;
  margin-bottom: 16px;
}

.toolbar .input {
  width: auto;
}

/* 分页 */
.pagination {
  display: flex;
  justify-content: center;
  gap: 4px;
  padding: 16px;
}

.pagination button {
  padding: 6px 12px;
  border: 1px solid var(--color-border);
  background: var(--color-bg-card);
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 14px;
  transition: all var(--transition);
}

.pagination button:hover:not(:disabled) {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.pagination button.active {
  background: var(--color-primary);
  color: white;
  border-color: var(--color-primary);
}

.pagination button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* 模态框 */
.modal-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0,0,0,0.5);
  z-index: 1000;
  align-items: center;
  justify-content: center;
}

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

.modal {
  background: var(--color-bg-card);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 500px;
  max-height: 90vh;
  overflow: auto;
  animation: modalIn 0.2s ease;
}

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

.modal-header {
  padding: 16px 24px;
  border-bottom: 1px solid var(--color-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.modal-title {
  font-size: 18px;
  font-weight: 600;
}

.modal-close {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: none;
  background: none;
  cursor: pointer;
  color: var(--color-text-muted);
  border-radius: var(--radius-sm);
  transition: all var(--transition);
}

.modal-close:hover {
  background: var(--color-bg);
  color: var(--color-text);
}

.modal-body {
  padding: 24px;
}

.modal-footer {
  padding: 16px 24px;
  border-top: 1px solid var(--color-border);
  display: flex;
  justify-content: flex-end;
  gap: 12px;
}

/* 提示 */
.toast {
  position: fixed;
  top: 72px;
  right: 24px;
  padding: 12px 20px;
  background: var(--color-success);
  color: white;
  border-radius: var(--radius-sm);
  z-index: 2000;
  animation: toastIn 0.3s ease;
  display: none;
}

.toast.error {
  background: var(--color-danger);
}

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

/* 标签 */
.tag {
  display: inline-flex;
  align-items: center;
  padding: 4px 10px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 500;
}

.tag-success { background: #dcfce7; color: #166534; }
.tag-warning { background: #fef3c7; color: #92400e; }
.tag-danger { background: #fee2e2; color: #991b1b; }
.tag-info { background: #dbeafe; color: #1e40af; }
.tag-muted { background: #f1f5f9; color: #475569; }

/* 统计卡片 */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.stat-card {
  background: var(--color-bg-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  padding: 20px;
  text-align: center;
}

.stat-card .label {
  font-size: 13px;
  color: var(--color-text-muted);
  margin-bottom: 8px;
}

.stat-card .value {
  font-size: 32px;
  font-weight: 700;
  color: var(--color-primary);
}

.stat-card.high .value { color: var(--color-success); }
.stat-card.medium .value { color: var(--color-warning); }
.stat-card.low .value { color: #F97316; }
.stat-card.none .value { color: var(--color-text-muted); }

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

/* 辅助类 */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-muted { color: var(--color-text-muted); }
.text-success { color: var(--color-success); }
.text-danger { color: var(--color-danger); }
.font-mono { font-family: 'SF Mono', 'Fira Code', Consolas, monospace; }
.mt-2 { margin-top: 8px; }
.mt-4 { margin-top: 16px; }
.mb-2 { margin-bottom: 8px; }
.mb-4 { margin-bottom: 16px; }
.flex { display: flex; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-2 { gap: 8px; }
.gap-4 { gap: 16px; }