/* ========== 龙慧云 AI 工具箱 · 广告管理后台样式 ========== */

:root {
  --primary: #6d5efc;
  --primary-dark: #5a4be0;
  --primary-light: #8b7ffd;
  --primary-bg: #f0eeff;
  --bg: #f5f6fa;
  --card-bg: #ffffff;
  --text: #2d3748;
  --text-secondary: #718096;
  --border: #e2e8f0;
  --success: #48bb78;
  --warning: #ed8936;
  --danger: #f56565;
  --shadow: 0 4px 20px rgba(109, 94, 252, 0.08);
  --radius: 12px;
  --radius-sm: 8px;
  --nav-height: 64px;
  --sidebar-width: 240px;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
}

/* ========== Login ========== */
.login-page {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  background: linear-gradient(135deg, #6d5efc 0%, #4a3db8 50%, #2d1f8e 100%);
  position: relative;
  overflow: hidden;
}
.login-page::before {
  content: '';
  position: absolute;
  width: 600px;
  height: 600px;
  background: rgba(255,255,255,0.03);
  border-radius: 50%;
  top: -200px;
  right: -100px;
}
.login-page::after {
  content: '';
  position: absolute;
  width: 400px;
  height: 400px;
  background: rgba(255,255,255,0.03);
  border-radius: 50%;
  bottom: -150px;
  left: -80px;
}
.login-card {
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(20px);
  border-radius: 20px;
  padding: 48px 40px;
  width: 400px;
  max-width: 90vw;
  box-shadow: 0 20px 60px rgba(0,0,0,0.2);
  position: relative;
  z-index: 1;
}
.login-logo {
  text-align: center;
  margin-bottom: 32px;
}
.login-logo .icon {
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, var(--primary), #8b5cf6);
  border-radius: 16px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  color: #fff;
  margin-bottom: 16px;
}
.login-logo h1 { font-size: 22px; font-weight: 700; color: var(--text); }
.login-logo p { font-size: 13px; color: var(--text-secondary); margin-top: 4px; }
.login-form .form-group { margin-bottom: 20px; }
.login-form label { display: block; font-size: 14px; font-weight: 500; margin-bottom: 6px; color: var(--text); }
.login-form input {
  width: 100%;
  padding: 12px 16px;
  border: 2px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 15px;
  transition: border-color 0.2s;
  outline: none;
}
.login-form input:focus { border-color: var(--primary); }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 24px;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  text-decoration: none;
  gap: 6px;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); transform: translateY(-1px); box-shadow: 0 4px 12px rgba(109, 94, 252, 0.3); }
.btn-sm { padding: 6px 14px; font-size: 13px; }
.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { background: #e53e3e; }
.btn-outline { background: transparent; color: var(--primary); border: 2px solid var(--primary); }
.btn-outline:hover { background: var(--primary-bg); }
.btn-block { width: 100%; padding: 12px; font-size: 16px; }
.login-error {
  background: #fff5f5;
  color: var(--danger);
  padding: 10px 16px;
  border-radius: var(--radius-sm);
  margin-bottom: 16px;
  font-size: 13px;
  display: none;
}
.login-error.show { display: block; }

/* ========== Layout ========== */
.app-layout { display: flex; min-height: 100vh; }

/* Sidebar */
.sidebar {
  width: var(--sidebar-width);
  background: linear-gradient(180deg, #2d1f8e 0%, #1a1058 100%);
  color: #fff;
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  z-index: 100;
  display: flex;
  flex-direction: column;
  transition: transform 0.3s;
}
.sidebar-header {
  padding: 24px 20px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}
.sidebar-header .brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 18px;
  font-weight: 700;
}
.sidebar-header .brand .icon {
  width: 36px;
  height: 36px;
  background: rgba(255,255,255,0.15);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
}
.sidebar-nav { flex: 1; padding: 16px 12px; }
.sidebar-nav a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 14px;
  color: rgba(255,255,255,0.7);
  text-decoration: none;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 500;
  transition: all 0.2s;
  margin-bottom: 2px;
}
.sidebar-nav a:hover { background: rgba(255,255,255,0.1); color: #fff; }
.sidebar-nav a.active {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 4px 12px rgba(109, 94, 252, 0.3);
}
.sidebar-nav a .nav-icon { font-size: 18px; width: 24px; text-align: center; }
.sidebar-footer {
  padding: 16px 20px;
  border-top: 1px solid rgba(255,255,255,0.1);
}
.sidebar-footer .user-info {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
}
.sidebar-footer .user-info .avatar {
  width: 32px;
  height: 32px;
  background: var(--primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
}
.sidebar-footer .user-info .logout-btn {
  margin-left: auto;
  background: rgba(255,255,255,0.1);
  border: none;
  color: rgba(255,255,255,0.7);
  padding: 6px 12px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 12px;
  transition: all 0.2s;
}
.sidebar-footer .user-info .logout-btn:hover { background: rgba(255,255,255,0.2); color: #fff; }

/* Main content */
.main-content {
  margin-left: var(--sidebar-width);
  flex: 1;
  padding: 28px 32px;
  min-height: 100vh;
}
.page-header {
  margin-bottom: 28px;
}
.page-header h1 { font-size: 24px; font-weight: 700; }
.page-header p { color: var(--text-secondary); font-size: 14px; margin-top: 4px; }

/* ========== Stats Cards ========== */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 20px;
  margin-bottom: 28px;
}
.stat-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
}
.stat-card .stat-label { font-size: 13px; color: var(--text-secondary); margin-bottom: 8px; }
.stat-card .stat-value { font-size: 32px; font-weight: 700; color: var(--text); }
.stat-card .stat-sub { font-size: 12px; color: var(--text-secondary); margin-top: 4px; }
.stat-card.primary .stat-value { color: var(--primary); }
.stat-card.success .stat-value { color: var(--success); }
.stat-card.warning .stat-value { color: var(--warning); }

/* ========== Cards ========== */
.card {
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
  margin-bottom: 24px;
}
.card-header {
  padding: 20px 24px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.card-header h2 { font-size: 16px; font-weight: 600; }
.card-body { padding: 24px; }

/* ========== Charts area ========== */
.chart-container {
  width: 100%;
  height: 280px;
  position: relative;
}

/* ========== Bar chart (CSS) ========== */
.bar-chart {
  display: flex;
  align-items: flex-end;
  gap: 6px;
  height: 200px;
  padding-top: 20px;
  position: relative;
}
.bar-group {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  height: 100%;
  justify-content: flex-end;
}
.bar {
  width: 100%;
  max-width: 40px;
  background: linear-gradient(180deg, var(--primary-light), var(--primary));
  border-radius: 4px 4px 0 0;
  min-height: 2px;
  transition: height 0.6s ease;
  position: relative;
  cursor: pointer;
}
.bar:hover { opacity: 0.85; }
.bar-label { font-size: 11px; color: var(--text-secondary); white-space: nowrap; transform: rotate(-30deg); margin-top: 4px; }
.bar-value { font-size: 11px; font-weight: 600; color: var(--primary); }

/* Pie chart (CSS) */
.pie-container {
  display: flex;
  align-items: center;
  gap: 32px;
  padding: 10px 0;
}
.pie-chart {
  width: 160px;
  height: 160px;
  border-radius: 50%;
  position: relative;
  flex-shrink: 0;
}
.pie-legend { flex: 1; }
.pie-legend-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 0;
  font-size: 14px;
}
.pie-legend-item .dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  flex-shrink: 0;
}
.pie-legend-item .val {
  margin-left: auto;
  font-weight: 600;
}

/* ========== Table ========== */
.table-wrapper {
  overflow-x: auto;
}
table {
  width: 100%;
  border-collapse: collapse;
}
table th {
  background: var(--bg);
  text-align: left;
  padding: 12px 16px;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
  border-bottom: 2px solid var(--border);
  white-space: nowrap;
}
table td {
  padding: 12px 16px;
  font-size: 14px;
  border-bottom: 1px solid var(--border);
}
table tr:hover td { background: var(--primary-bg); }
.status-badge {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 500;
}
.status-badge.success { background: #c6f6d5; color: #22543d; }
.status-badge.pending { background: #fefcbf; color: #744210; }
.status-badge.error { background: #fed7d7; color: #9b2c2c; }

/* ========== Forms ========== */
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
.form-group { margin-bottom: 20px; }
.form-group label { display: block; font-size: 14px; font-weight: 500; margin-bottom: 6px; color: var(--text); }
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 10px 14px;
  border: 2px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 14px;
  outline: none;
  transition: border-color 0.2s;
  font-family: inherit;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus { border-color: var(--primary); }
.form-group textarea { min-height: 80px; resize: vertical; }
.form-hint { font-size: 12px; color: var(--text-secondary); margin-top: 4px; }
.toggle-switch {
  position: relative;
  display: inline-block;
  width: 44px;
  height: 24px;
}
.toggle-switch input { opacity: 0; width: 0; height: 0; }
.toggle-slider {
  position: absolute;
  cursor: pointer;
  top: 0; left: 0; right: 0; bottom: 0;
  background: #cbd5e0;
  border-radius: 24px;
  transition: 0.3s;
}
.toggle-slider::before {
  content: '';
  position: absolute;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: #fff;
  top: 3px;
  left: 3px;
  transition: 0.3s;
}
.toggle-switch input:checked + .toggle-slider { background: var(--primary); }
.toggle-switch input:checked + .toggle-slider::before { transform: translateX(20px); }

/* ========== Toast ========== */
.toast-container {
  position: fixed;
  top: 24px;
  right: 24px;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.toast {
  padding: 14px 20px;
  border-radius: var(--radius-sm);
  background: var(--card-bg);
  box-shadow: 0 8px 24px rgba(0,0,0,0.12);
  font-size: 14px;
  display: flex;
  align-items: center;
  gap: 10px;
  animation: slideIn 0.3s ease;
  min-width: 260px;
}
.toast.success { border-left: 4px solid var(--success); }
.toast.error { border-left: 4px solid var(--danger); }
.toast.warning { border-left: 4px solid var(--warning); }
@keyframes slideIn {
  from { transform: translateX(100%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

/* ========== Pagination ========== */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 20px 0;
}
.pagination button {
  padding: 6px 14px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--card-bg);
  cursor: pointer;
  font-size: 13px;
  transition: all 0.2s;
}
.pagination button:hover:not(:disabled) { border-color: var(--primary); color: var(--primary); }
.pagination button:disabled { opacity: 0.4; cursor: not-allowed; }
.pagination button.active { background: var(--primary); color: #fff; border-color: var(--primary); }
.pagination .page-info { font-size: 13px; color: var(--text-secondary); margin: 0 8px; }

/* ========== Loading ========== */
.loading {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 48px;
  color: var(--text-secondary);
  font-size: 14px;
  gap: 10px;
}
.spinner {
  width: 20px;
  height: 20px;
  border: 3px solid var(--border);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ========== Filter bar ========== */
.filter-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 16px;
}
.filter-bar label { font-size: 13px; font-weight: 500; color: var(--text-secondary); }
.filter-bar input,
.filter-bar select {
  padding: 8px 12px;
  border: 2px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 13px;
  outline: none;
}
.filter-bar input:focus,
.filter-bar select:focus { border-color: var(--primary); }

/* ========== Upload zone ========== */
.upload-zone {
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  padding: 48px 24px;
  text-align: center;
  cursor: pointer;
  transition: all 0.2s;
  background: var(--bg);
}
.upload-zone:hover,
.upload-zone.dragover { border-color: var(--primary); background: var(--primary-bg); }
.upload-zone .upload-icon { font-size: 48px; margin-bottom: 12px; }
.upload-zone p { font-size: 14px; color: var(--text-secondary); }
.upload-zone .upload-hint { font-size: 12px; color: var(--text-secondary); margin-top: 8px; }

/* ========== Responsive ========== */
@media (max-width: 768px) {
  .sidebar {
    transform: translateX(-100%);
  }
  .sidebar.open { transform: translateX(0); }
  .main-content {
    margin-left: 0;
    padding: 20px 16px;
  }
  .form-row { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .pie-container { flex-direction: column; }
  .mobile-menu-btn {
    display: block !important;
    position: fixed;
    top: 12px;
    left: 12px;
    z-index: 200;
    background: var(--primary);
    color: #fff;
    border: none;
    width: 40px;
    height: 40px;
    border-radius: 10px;
    font-size: 20px;
    cursor: pointer;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
  }
}
@media (min-width: 769px) {
  .mobile-menu-btn { display: none; }
}

/* ========== Empty state ========== */
.empty-state {
  text-align: center;
  padding: 48px 24px;
  color: var(--text-secondary);
}
.empty-state .empty-icon { font-size: 48px; margin-bottom: 12px; }
.empty-state p { font-size: 14px; }

/* ========== Section group for config ========== */
.config-section {
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  margin-bottom: 24px;
  overflow: hidden;
}
.config-section-header {
  padding: 16px 24px;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 10px;
}
.config-section-header h3 { font-size: 15px; font-weight: 600; }
.config-section-header .section-icon { font-size: 20px; }
.config-section-body { padding: 24px; }