* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --primary-light: #dbeafe;
  --danger: #dc2626;
  --danger-light: #fee2e2;
  --success: #16a34a;
  --success-light: #dcfce7;
  --warning: #d97706;
  --warning-light: #fef3c7;
  --text: #1e293b;
  --text-light: #64748b;
  --border: #e2e8f0;
  --bg: #f1f5f9;
  --card-bg: #ffffff;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.08), 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.1), 0 4px 6px rgba(0, 0, 0, 0.05);
  --radius: 8px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  font-size: 14px;
}

a {
  color: var(--primary);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.navbar {
  background: var(--card-bg);
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow);
  position: sticky;
  top: 0;
  z-index: 100;
}

.navbar-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  height: 56px;
  gap: 24px;
}

.navbar-brand {
  font-size: 18px;
  font-weight: 700;
  color: var(--primary);
  white-space: nowrap;
}

.navbar-links {
  display: flex;
  gap: 4px;
  flex: 1;
}

.navbar-links a {
  padding: 8px 14px;
  border-radius: var(--radius);
  color: var(--text);
  font-weight: 500;
  transition: all 0.15s;
}

.navbar-links a:hover {
  background: var(--primary-light);
  text-decoration: none;
}

.navbar-links a.active {
  background: var(--primary);
  color: #fff;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 24px 20px;
}

.page-title {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 20px;
  color: var(--text);
}

.card {
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 20px;
  margin-bottom: 20px;
}

.card-title {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
}

.login-wrap {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #2563eb 0%, #1e40af 100%);
  padding: 20px;
}

.login-card {
  background: var(--card-bg);
  border-radius: 12px;
  box-shadow: var(--shadow-lg);
  padding: 36px 32px;
  width: 100%;
  max-width: 380px;
}

.login-title {
  font-size: 22px;
  font-weight: 700;
  text-align: center;
  margin-bottom: 8px;
  color: var(--text);
}

.login-subtitle {
  text-align: center;
  color: var(--text-light);
  font-size: 13px;
  margin-bottom: 24px;
}

.form-group {
  margin-bottom: 16px;
}

.form-group label {
  display: block;
  font-weight: 500;
  margin-bottom: 6px;
  color: var(--text);
  font-size: 13px;
}

.form-control {
  width: 100%;
  padding: 9px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 14px;
  font-family: inherit;
  background: #fff;
  color: var(--text);
  transition: border-color 0.15s, box-shadow 0.15s;
}

.form-control:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12);
}

.form-row {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  align-items: flex-end;
}

.form-row .form-group {
  flex: 1;
  min-width: 140px;
  margin-bottom: 16px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 9px 18px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 500;
  font-family: inherit;
  cursor: pointer;
  transition: all 0.15s;
  white-space: nowrap;
  background: var(--primary);
  color: #fff;
}

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

.btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.btn-sm {
  padding: 5px 10px;
  font-size: 12px;
}

.btn-block {
  width: 100%;
}

.btn-secondary {
  background: #fff;
  color: var(--text);
  border-color: var(--border);
}

.btn-secondary:hover {
  background: var(--bg);
}

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

.btn-danger:hover {
  background: #b91c1c;
}

.btn-success {
  background: var(--success);
  color: #fff;
}

.btn-success:hover {
  background: #15803d;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  margin-bottom: 20px;
}

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

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

.stat-value {
  font-size: 30px;
  font-weight: 700;
  color: var(--primary);
}

.status-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 12px;
}

.status-item {
  background: var(--bg);
  border-radius: var(--radius);
  padding: 14px 16px;
  border-left: 4px solid var(--primary);
}

.status-item.unused { border-left-color: var(--text-light); }
.status-item.active { border-left-color: var(--success); }
.status-item.expired { border-left-color: var(--warning); }
.status-item.disabled { border-left-color: var(--danger); }

.status-name {
  font-size: 13px;
  color: var(--text-light);
  margin-bottom: 4px;
}

.status-count {
  font-size: 22px;
  font-weight: 700;
}

.chart-wrap {
  position: relative;
  height: 300px;
}

.table-wrap {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

th, td {
  padding: 10px 12px;
  text-align: left;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}

th {
  background: var(--bg);
  font-weight: 600;
  color: var(--text);
}

tbody tr:hover {
  background: #f8fafc;
}

td.wrap {
  white-space: normal;
  word-break: break-all;
}

.tag {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 12px;
  font-weight: 500;
}

.tag.unused { background: #e2e8f0; color: #475569; }
.tag.active { background: var(--success-light); color: #166534; }
.tag.expired { background: var(--warning-light); color: #92400e; }
.tag.disabled { background: var(--danger-light); color: #991b1b; }

.tag.day { background: var(--primary-light); color: #1e40af; }
.tag.week { background: #ede9fe; color: #5b21b6; }
.tag.month { background: #fce7f3; color: #9d174d; }
.tag.quarter { background: #ccfbf1; color: #115e59; }
.tag.year { background: #fef9c3; color: #854d0e; }

.card-key {
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  font-size: 13px;
}

.empty {
  text-align: center;
  padding: 40px 20px;
  color: var(--text-light);
}

.pagination {
  display: flex;
  align-items: center;
  gap: 8px;
  justify-content: flex-end;
  margin-top: 16px;
  flex-wrap: wrap;
}

.pagination .pg-info {
  color: var(--text-light);
  font-size: 13px;
  margin-right: auto;
}

.gen-result {
  margin-top: 16px;
}

.gen-result-list {
  max-height: 280px;
  overflow-y: auto;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-top: 12px;
}

.gen-result-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 12px;
  border-bottom: 1px solid var(--border);
  gap: 12px;
}

.gen-result-item:last-child {
  border-bottom: none;
}

.gen-result-actions {
  display: flex;
  gap: 8px;
  margin-top: 12px;
  flex-wrap: wrap;
}

.app-toast {
  position: fixed;
  top: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(-20px);
  background: var(--text);
  color: #fff;
  padding: 10px 20px;
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  font-size: 14px;
  z-index: 9999;
  opacity: 0;
  pointer-events: none;
  transition: all 0.25s;
}

.app-toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

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

.loading {
  text-align: center;
  padding: 40px 20px;
  color: var(--text-light);
}

@media (max-width: 768px) {
  .navbar-inner {
    padding: 0 12px;
    gap: 12px;
    height: auto;
    flex-wrap: wrap;
    padding-top: 8px;
    padding-bottom: 8px;
  }
  .navbar-brand {
    font-size: 16px;
  }
  .navbar-links {
    width: 100%;
    overflow-x: auto;
    gap: 2px;
  }
  .navbar-links a {
    padding: 6px 10px;
    font-size: 13px;
    white-space: nowrap;
  }
  .container {
    padding: 16px 12px;
  }
  .page-title {
    font-size: 18px;
  }
  .stat-value {
    font-size: 24px;
  }
  .form-row {
    flex-direction: column;
    align-items: stretch;
  }
  .form-row .form-group {
    min-width: 100%;
  }
  .pagination {
    justify-content: center;
  }
  .pagination .pg-info {
    width: 100%;
    text-align: center;
    margin-right: 0;
    margin-bottom: 8px;
  }
}