/* ========== 基础重置 ========== */
* { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --success: #16a34a;
  --warning: #d97706;
  --danger: #dc2626;
  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-500: #6b7280;
  --gray-700: #374151;
  --gray-900: #111827;
  --radius: 8px;
  --shadow: 0 1px 3px rgba(0,0,0,0.1);
  --shadow-lg: 0 4px 6px rgba(0,0,0,0.1);
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--gray-50);
  color: var(--gray-900);
  line-height: 1.6;
}

/* ========== 登录页 ========== */
.login-page {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.login-container {
  width: 100%;
  max-width: 400px;
  padding: 20px;
}

.login-card {
  background: white;
  border-radius: 12px;
  padding: 40px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.2);
}

.login-header {
  text-align: center;
  margin-bottom: 30px;
}

.login-header h1 { font-size: 48px; margin-bottom: 8px; }
.login-header h2 { font-size: 20px; color: var(--gray-700); }
.login-header p { color: var(--gray-500); font-size: 14px; margin-top: 4px; }

/* ========== 导航栏 ========== */
.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 24px;
  background: white;
  border-bottom: 1px solid var(--gray-200);
  box-shadow: var(--shadow);
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav-brand {
  font-size: 18px;
  font-weight: 700;
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 12px;
}

.nav-user { color: var(--gray-500); font-size: 14px; }

/* ========== 容器 ========== */
.container {
  max-width: 1200px;
  margin: 24px auto;
  padding: 0 24px;
}

/* ========== 统计卡片 ========== */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

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

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

.stat-active .stat-value { color: var(--success); }
.stat-expired .stat-value { color: var(--danger); }

.stat-label {
  font-size: 14px;
  color: var(--gray-500);
  margin-top: 4px;
}

/* ========== 标签页 ========== */
.tabs {
  display: flex;
  gap: 4px;
  margin-bottom: 20px;
  border-bottom: 2px solid var(--gray-200);
}

.tab {
  padding: 10px 20px;
  border: none;
  background: none;
  font-size: 15px;
  cursor: pointer;
  color: var(--gray-500);
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  transition: all 0.2s;
}

.tab.active {
  color: var(--primary);
  border-bottom-color: var(--primary);
  font-weight: 600;
}

.tab:hover { color: var(--gray-700); }

.tab-content { display: none; }
.tab-content.active { display: block; }

/* ========== 区块头 ========== */
.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}

.section-header h3 { font-size: 18px; }

/* ========== 表格 ========== */
.table-wrapper {
  background: white;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow-x: auto;
}

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

.data-table th {
  padding: 12px 16px;
  text-align: left;
  font-size: 13px;
  font-weight: 600;
  color: var(--gray-500);
  text-transform: uppercase;
  border-bottom: 1px solid var(--gray-200);
  white-space: nowrap;
}

.data-table td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--gray-100);
  font-size: 14px;
  white-space: nowrap;
}

.data-table tr:hover { background: var(--gray-50); }

/* ========== 状态标签 ========== */
.badge {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
}

.badge-active { background: #dcfce7; color: #166534; }
.badge-disabled { background: #fee2e2; color: #991b1b; }
.badge-expired { background: #fef3c7; color: #92400e; }
.badge-enabled { background: #dcfce7; color: #166534; }

/* ========== 按钮 ========== */
.btn {
  padding: 8px 16px;
  border: none;
  border-radius: var(--radius);
  font-size: 14px;
  cursor: pointer;
  transition: all 0.2s;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.btn-sm { padding: 4px 10px; font-size: 12px; }

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

.btn-success { background: var(--success); color: white; }
.btn-success:hover { background: #15803d; }

.btn-warning { background: var(--warning); color: white; }
.btn-warning:hover { background: #b45309; }

.btn-danger { background: var(--danger); color: white; }
.btn-danger:hover { background: #b91c1c; }

.btn-outline {
  background: white;
  color: var(--gray-700);
  border: 1px solid var(--gray-300);
}

.btn-outline:hover { background: var(--gray-50); }

.btn-block { width: 100%; justify-content: center; padding: 12px; font-size: 16px; }

.btn-group { display: flex; gap: 4px; }

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

.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 500;
  margin-bottom: 4px;
  color: var(--gray-700);
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 8px 12px;
  border: 1px solid var(--gray-300);
  border-radius: var(--radius);
  font-size: 14px;
  transition: border-color 0.2s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37,99,235,0.1);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form-actions {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid var(--gray-200);
}

.error-msg {
  color: var(--danger);
  font-size: 14px;
  margin-bottom: 12px;
  padding: 8px 12px;
  background: #fef2f2;
  border-radius: var(--radius);
}

/* ========== 模态框 ========== */
.modal {
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background: rgba(0,0,0,0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
}

.modal-content {
  background: white;
  border-radius: 12px;
  width: 90%;
  max-width: 520px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: 0 20px 60px rgba(0,0,0,0.3);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 24px;
  border-bottom: 1px solid var(--gray-200);
}

.modal-header h3 { font-size: 18px; }

.modal-close {
  background: none;
  border: none;
  font-size: 24px;
  cursor: pointer;
  color: var(--gray-500);
  padding: 4px;
}

.modal-content form,
.modal-content .token-display {
  padding: 24px;
}

/* ========== Token 显示 ========== */
.token-display { text-align: center; }

.token-url {
  background: var(--gray-100);
  padding: 12px 16px;
  border-radius: var(--radius);
  font-family: monospace;
  font-size: 13px;
  word-break: break-all;
  margin: 16px 0;
  user-select: all;
}

/* ========== Toast ========== */
.toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: var(--gray-900);
  color: white;
  padding: 12px 24px;
  border-radius: var(--radius);
  font-size: 14px;
  z-index: 2000;
  box-shadow: var(--shadow-lg);
}

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

/* ========== 响应式 ========== */
@media (max-width: 768px) {
  .form-row { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .btn-group { flex-wrap: wrap; }
}