/* ========================================
   AI文案话题创作系统 - 深色科技风后台样式
   ======================================== */

/* 基础重置 */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
:root {
  --bg-primary: #0f172a;
  --bg-secondary: #1a2332;
  --bg-card: #1e293b;
  --bg-card-hover: #243044;
  --border-color: #2a3a54;
  --border-glow: #00d4ff40;
  --text-primary: #f1f5f9;
  --text-secondary: #b0c4de;
  --text-muted: #7e93b0;
  --accent-blue: #00d4ff;
  --accent-green: #00e676;
  --accent-orange: #ff9100;
  --accent-red: #ff1744;
  --accent-purple: #e040fb;
  --accent-cyan: #00bcd4;
  --gradient-blue: linear-gradient(135deg, #00d4ff, #0088ff);
  --shadow-card: 0 4px 20px rgba(0, 212, 255, 0.06);
  --shadow-glow: 0 0 20px rgba(0, 212, 255, 0.08);
  --radius: 10px;
  --radius-sm: 6px;
  --transition: all 0.3s ease;
}

html, body { height: 100%; font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'PingFang SC', 'Microsoft YaHei', sans-serif; background: var(--bg-primary); color: var(--text-primary); font-size: 14px; line-height: 1.6; }

/* ====== 登录页 ====== */
.login-body { display: flex; align-items: center; justify-content: center; min-height: 100vh; background: var(--bg-primary); position: relative; overflow: hidden; }
.login-body::before { content: ''; position: absolute; width: 600px; height: 600px; background: radial-gradient(circle, rgba(0,212,255,0.08) 0%, transparent 70%); top: -200px; right: -200px; }
.login-body::after { content: ''; position: absolute; width: 400px; height: 400px; background: radial-gradient(circle, rgba(224,64,251,0.06) 0%, transparent 70%); bottom: -100px; left: -100px; }
.login-container { position: relative; z-index: 1; width: 100%; max-width: 420px; padding: 20px; }
.login-card { background: var(--bg-card); border: 1px solid var(--border-color); border-radius: 16px; padding: 40px; box-shadow: var(--shadow-card), var(--shadow-glow); backdrop-filter: blur(20px); }
.login-header { text-align: center; margin-bottom: 32px; }
.login-logo { margin-bottom: 16px; display: flex; justify-content: center; }
.login-header h1 { font-size: 22px; font-weight: 600; color: var(--text-primary); margin-bottom: 6px; }
.login-header p { font-size: 13px; color: var(--text-secondary); }
.login-form .form-group { margin-bottom: 20px; }
.login-form label { display: block; font-size: 13px; color: var(--text-secondary); margin-bottom: 6px; font-weight: 500; }
.login-form input { width: 100%; padding: 10px 14px; background: var(--bg-secondary); border: 1px solid var(--border-color); border-radius: var(--radius-sm); color: var(--text-primary); font-size: 14px; transition: var(--transition); outline: none; }
.login-form input:focus { border-color: var(--accent-blue); box-shadow: 0 0 0 3px rgba(0,212,255,0.1); }
.login-form input::placeholder { color: var(--text-muted); }
.captcha-row { display: flex; gap: 12px; align-items: center; }
.captcha-row input { flex: 1; }
.captcha-img { height: 40px; border-radius: var(--radius-sm); cursor: pointer; border: 1px solid var(--border-color); }
.login-btn { width: 100%; padding: 12px; background: var(--gradient-blue); border: none; border-radius: var(--radius-sm); color: #fff; font-size: 15px; font-weight: 600; cursor: pointer; transition: var(--transition); }
.login-btn:hover { box-shadow: 0 0 20px rgba(0,212,255,0.3); transform: translateY(-1px); }
.login-btn:disabled { opacity: 0.6; cursor: not-allowed; transform: none; }
.login-bg-glow { position: absolute; top: 50%; left: 50%; width: 300px; height: 300px; background: radial-gradient(circle, rgba(0,212,255,0.04), transparent); transform: translate(-50%, -50%); pointer-events: none; }

/* ====== 后台布局 ====== */
.app-container { display: flex; height: 100vh; background: var(--bg-primary); }
.sidebar { width: 240px; background: var(--bg-secondary); border-right: 1px solid var(--border-color); display: flex; flex-direction: column; flex-shrink: 0; }
.sidebar-header { padding: 20px; display: flex; align-items: center; gap: 12px; border-bottom: 1px solid var(--border-color); }
.sidebar-header h2 { font-size: 16px; font-weight: 600; background: linear-gradient(90deg, var(--accent-blue), var(--accent-purple)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.logo-icon { flex-shrink: 0; }
.sidebar-nav { flex: 1; padding: 12px 10px; overflow-y: auto; }
.nav-item { display: flex; align-items: center; gap: 12px; padding: 10px 14px; border-radius: var(--radius-sm); cursor: pointer; color: var(--text-secondary); transition: var(--transition); margin-bottom: 2px; font-size: 14px; }
.nav-item:hover { background: rgba(0,212,255,0.06); color: var(--text-primary); }
.nav-item.active { background: rgba(0,212,255,0.1); color: var(--accent-blue); }
.nav-item svg { flex-shrink: 0; }
.sidebar-footer { padding: 16px 20px; border-top: 1px solid var(--border-color); display: flex; align-items: center; justify-content: space-between; }
.admin-info { display: flex; align-items: center; gap: 8px; }
.admin-avatar { width: 32px; height: 32px; border-radius: 50%; background: var(--gradient-blue); display: flex; align-items: center; justify-content: center; font-size: 13px; font-weight: 600; color: #fff; }
.logout-btn { font-size: 12px; color: var(--text-muted); text-decoration: none; padding: 4px 10px; border: 1px solid var(--border-color); border-radius: 4px; transition: var(--transition); }
.logout-btn:hover { color: var(--accent-red); border-color: var(--accent-red); }

.main-content { flex: 1 1 auto; display: flex; flex-direction: column; overflow: hidden; min-width: 200px; }
.top-bar { padding: 16px 24px; background: var(--bg-secondary); border-bottom: 1px solid var(--border-color); display: flex; align-items: center; justify-content: space-between; flex-shrink: 0; }
.page-title { font-size: 16px; font-weight: 600; }
.current-time { font-size: 13px; color: var(--text-secondary); }
.content-body { flex: 1 1 auto; overflow-y: auto; padding: 24px; }

/* ====== 统计卡片 ====== */
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.stat-card { background: var(--bg-card); border: 1px solid var(--border-color); border-radius: var(--radius); padding: 20px; display: flex; align-items: center; gap: 16px; transition: var(--transition); box-shadow: var(--shadow-card); }
.stat-card:hover { border-color: var(--border-glow); transform: translateY(-2px); box-shadow: var(--shadow-glow); }
.stat-icon { width: 52px; height: 52px; border-radius: 12px; display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.stat-info { display: flex; flex-direction: column; gap: 4px; }
.stat-label { font-size: 13px; color: var(--text-secondary); }
.stat-value { font-size: 24px; font-weight: 700; color: var(--text-primary); }

/* ====== 趋势图 ====== */
.chart-card { background: var(--bg-card); border: 1px solid var(--border-color); border-radius: var(--radius); padding: 20px; box-shadow: var(--shadow-card); }
.card-title { font-size: 15px; font-weight: 600; margin-bottom: 16px; color: var(--text-primary); }
.trend-chart { display: flex; align-items: flex-end; gap: 12px; height: 180px; padding: 10px 0; }
.trend-bar-item { flex: 1; display: flex; flex-direction: column; align-items: center; gap: 6px; height: 100%; justify-content: flex-end; }
.trend-bar-wrap { width: 100%; height: 140px; display: flex; align-items: flex-end; justify-content: center; }
.trend-bar { width: 32px; background: linear-gradient(to top, var(--accent-blue), #0088ff); border-radius: 4px 4px 0 0; transition: var(--transition); min-height: 4px; opacity: 0.8; }
.trend-bar:hover { opacity: 1; }
.trend-label { font-size: 11px; color: var(--text-muted); }
.trend-count { font-size: 12px; color: var(--text-secondary); font-weight: 600; }

/* ====== 表格和数据列表 ====== */
.page-toolbar { display: flex; align-items: center; justify-content: space-between; margin-bottom: 16px; gap: 12px; flex-wrap: wrap; }
.search-box { display: flex; gap: 8px; align-items: center; }
.search-box input { padding: 8px 14px; background: var(--bg-card); border: 1px solid var(--border-color); border-radius: var(--radius-sm); color: var(--text-primary); width: 200px; font-size: 13px; }
.search-box input:focus { border-color: var(--accent-blue); outline: none; }
.btn { padding: 8px 18px; border: none; border-radius: var(--radius-sm); font-size: 13px; font-weight: 500; cursor: pointer; transition: var(--transition); display: inline-flex; align-items: center; gap: 6px; }
.btn-primary { background: var(--gradient-blue); color: #fff; }
.btn-primary:hover { box-shadow: 0 0 16px rgba(0,212,255,0.3); }
.btn-success { background: linear-gradient(135deg, #00e676, #00c853); color: #fff; }
.btn-danger { background: linear-gradient(135deg, #ff1744, #d50000); color: #fff; }
.btn-warning { background: linear-gradient(135deg, #ff9100, #ff6d00); color: #fff; }
.btn-sm { padding: 5px 12px; font-size: 12px; }
.btn-ghost { background: transparent; border: 1px solid var(--border-color); color: var(--text-secondary); }
.btn-ghost:hover { border-color: var(--accent-blue); color: var(--accent-blue); }
.btn-group { display: flex; gap: 6px; }

.data-table { width: 100%; border-collapse: collapse; background: var(--bg-card); border-radius: var(--radius); overflow: hidden; border: 1px solid var(--border-color); }
.data-table thead { background: rgba(0,212,255,0.04); }
.data-table th { padding: 12px 16px; text-align: left; font-size: 12px; color: var(--text-secondary); font-weight: 600; text-transform: uppercase; letter-spacing: 0.5px; border-bottom: 1px solid var(--border-color); }
.data-table td { padding: 12px 16px; color: var(--text-primary); font-size: 13px; border-bottom: 1px solid rgba(30,45,74,0.5); }
.data-table tr:last-child td { border-bottom: none; }
.data-table tr:hover td { background: rgba(0,212,255,0.02); }
.table-empty { text-align: center; padding: 40px; color: var(--text-muted); }

/* ====== 状态标签 ====== */
.status-tag { display: inline-flex; align-items: center; gap: 4px; padding: 2px 10px; border-radius: 20px; font-size: 12px; font-weight: 500; }
.status-active, .status-normal { background: rgba(0,230,118,0.12); color: var(--accent-green); }
.status-disabled, .status-expired { background: rgba(255,23,68,0.12); color: var(--accent-red); }
.status-warning { background: rgba(255,145,0,0.12); color: var(--accent-orange); }
.status-test-ok { background: rgba(0,230,118,0.12); color: var(--accent-green); }
.status-ai { background: rgba(224,64,251,0.12); color: #e040fb; }
.status-test-fail { background: rgba(255,23,68,0.12); color: var(--accent-red); }
.status-test-none { background: rgba(100,116,139,0.12); color: var(--text-muted); }
.dot { width: 6px; height: 6px; border-radius: 50%; display: inline-block; }
.dot.green { background: var(--accent-green); box-shadow: 0 0 6px var(--accent-green); }
.dot.red { background: var(--accent-red); box-shadow: 0 0 6px var(--accent-red); }
.dot.orange { background: var(--accent-orange); box-shadow: 0 0 6px var(--accent-orange); }
.dot.blue { background: var(--accent-blue); box-shadow: 0 0 6px var(--accent-blue); }

/* ====== 分页 ====== */
.pagination { display: flex; align-items: center; justify-content: center; gap: 6px; margin-top: 20px; }
.pagination a, .pagination span { padding: 6px 12px; border: 1px solid var(--border-color); border-radius: 4px; font-size: 13px; color: var(--text-secondary); text-decoration: none; transition: var(--transition); }
.pagination a:hover { border-color: var(--accent-blue); color: var(--accent-blue); }
.pagination .current { background: var(--gradient-blue); color: #fff; border-color: transparent; }
.pagination .disabled { opacity: 0.4; cursor: default; }

/* ====== 弹窗 ====== */
.modal-overlay { display: none; position: fixed; inset: 0; background: rgba(0,0,0,0.6); backdrop-filter: blur(4px); z-index: 1000; align-items: center; justify-content: center; }
.modal-overlay.active { display: flex; }
.modal { background: var(--bg-card); border: 1px solid var(--border-color); border-radius: 12px; width: 90%; max-width: 560px; max-height: 85vh; overflow-y: auto; box-shadow: 0 20px 60px rgba(0,0,0,0.5); }
.modal-header { padding: 18px 24px; border-bottom: 1px solid var(--border-color); display: flex; align-items: center; justify-content: space-between; }
.modal-header h3 { font-size: 16px; font-weight: 600; }
.modal-close { width: 28px; height: 28px; border-radius: 6px; border: none; background: transparent; color: var(--text-muted); font-size: 18px; cursor: pointer; display: flex; align-items: center; justify-content: center; transition: var(--transition); }
.modal-close:hover { background: rgba(255,255,255,0.06); color: var(--text-primary); }
.modal-body { padding: 24px; }
.modal-footer { padding: 16px 24px; border-top: 1px solid var(--border-color); display: flex; justify-content: flex-end; gap: 8px; }

/* ====== 表单 ====== */
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: 13px; color: var(--text-secondary); margin-bottom: 6px; font-weight: 500; }
.form-group input, .form-group select, .form-group textarea { width: 100%; padding: 8px 12px; background: var(--bg-secondary); border: 1px solid var(--border-color); border-radius: var(--radius-sm); color: var(--text-primary); font-size: 13px; transition: var(--transition); outline: none; }
.form-group input:focus, .form-group select:focus, .form-group textarea:focus { border-color: var(--accent-blue); box-shadow: 0 0 0 3px rgba(0,212,255,0.08); }
.form-group textarea { min-height: 80px; resize: vertical; }
.form-group select { cursor: pointer; }
.form-group select option { background: var(--bg-card); }
.form-hint { font-size: 11px; color: var(--text-muted); margin-top: 4px; }

/* ====== 系统配置页 ====== */
.config-tabs { display: flex; gap: 4px; margin-bottom: 24px; background: var(--bg-card); border: 1px solid var(--border-color); border-radius: var(--radius-sm); padding: 4px; }
.config-tab { padding: 8px 20px; border-radius: 4px; font-size: 13px; color: var(--text-secondary); cursor: pointer; transition: var(--transition); border: none; background: transparent; }
.config-tab:hover { color: var(--text-primary); }
.config-tab.active { background: rgba(0,212,255,0.1); color: var(--accent-blue); }
.config-panel { display: none; }
.config-panel.active { display: block; }
.config-card { background: var(--bg-card); border: 1px solid var(--border-color); border-radius: var(--radius); padding: 24px; box-shadow: var(--shadow-card); }

/* ====== 提示消息 ====== */
.alert { padding: 10px 14px; border-radius: var(--radius-sm); margin-bottom: 16px; font-size: 13px; }
.alert-success { background: rgba(0,230,118,0.08); border: 1px solid rgba(0,230,118,0.2); color: var(--accent-green); }
.alert-error { background: rgba(255,23,68,0.08); border: 1px solid rgba(255,23,68,0.2); color: var(--accent-red); }
.alert-info { background: rgba(0,212,255,0.08); border: 1px solid rgba(0,212,255,0.2); color: var(--accent-blue); }

/* ====== Toast ====== */
.toast-container { position: fixed; top: 20px; right: 20px; z-index: 2000; display: flex; flex-direction: column; gap: 8px; }
.toast { padding: 12px 20px; border-radius: var(--radius-sm); font-size: 13px; color: #fff; backdrop-filter: blur(10px); animation: slideInRight 0.3s ease; min-width: 200px; }
.toast-success { background: rgba(0,230,118,0.9); }
.toast-error { background: rgba(255,23,68,0.9); }
.toast-info { background: rgba(0,212,255,0.9); }
@keyframes slideInRight { from { transform: translateX(100px); opacity: 0; } to { transform: translateX(0); opacity: 1; } }

/* ====== 商户端特有 ====== */
.merchant-status-card { background: var(--bg-card); border: 1px solid var(--border-color); border-radius: var(--radius); padding: 20px; margin-bottom: 20px; display: flex; align-items: center; justify-content: space-between; }
.merchant-status-info h4 { font-size: 15px; margin-bottom: 4px; }
.merchant-status-info p { font-size: 12px; color: var(--text-secondary); }
.merchant-status-badge { padding: 6px 16px; border-radius: 20px; font-size: 13px; font-weight: 600; }
.content-preview { background: var(--bg-secondary); border: 1px solid var(--border-color); border-radius: var(--radius-sm); padding: 14px; margin-top: 8px; white-space: pre-wrap; font-size: 13px; color: var(--text-secondary); max-height: 200px; overflow-y: auto; }

/* ====== AI生成页 ====== */
.ai-content-box { background: var(--bg-secondary); border: 1px solid var(--border-color); border-radius: var(--radius); padding: 20px; min-height: 200px; margin-top: 16px; white-space: pre-wrap; font-size: 14px; line-height: 1.8; }
.ai-loading { text-align: center; padding: 40px; color: var(--text-muted); }
.ai-loading::after { content: ''; display: block; width: 32px; height: 32px; border: 2px solid var(--border-color); border-top-color: var(--accent-blue); border-radius: 50%; margin: 12px auto; animation: spin 0.8s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

/* ====== 滚动条 ====== */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border-color); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

/* ====== 工具按钮 ====== */
.toolbar-actions { display: flex; gap: 8px; align-items: center; }
.view-btn { padding: 8px 16px; background: rgba(0,212,255,0.06); border: 1px solid var(--border-color); border-radius: var(--radius-sm); color: var(--text-secondary); cursor: pointer; transition: var(--transition); font-size: 13px; }
.view-btn:hover { border-color: var(--accent-blue); color: var(--accent-blue); }
.view-btn.active { background: rgba(0,212,255,0.1); border-color: var(--accent-blue); color: var(--accent-blue); }

/* 图片中心 - 通用分页 */
.page-link { padding: 6px 12px; border: 1px solid var(--border-color); border-radius: 4px; font-size: 13px; color: var(--text-secondary); text-decoration: none; transition: var(--transition); cursor: pointer; }
.page-link:hover { border-color: var(--accent-blue); color: var(--accent-blue); }
.page-link.active { background: var(--gradient-blue); color: #fff; border-color: transparent; }
.page-link.disabled { opacity: 0.4; cursor: default; }

/* ======= 侧边栏底部美化 ======= */
.sidebar-footer {
  padding: 16px 20px;
  border-top: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(0, 0, 0, 0.15);
}
.admin-info {
  display: flex;
  align-items: center;
  gap: 8px;
}
.admin-avatar {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--gradient-blue);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 700;
  color: #fff;
  box-shadow: 0 2px 8px rgba(0, 136, 255, 0.3);
  letter-spacing: 1px;
}
.admin-info span:last-child {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-primary);
}
.sidebar-actions {
  display: flex;
  align-items: center;
  gap: 6px;
}
.sidebar-link {
  font-size: 12px;
  color: var(--accent-blue);
  text-decoration: none;
  padding: 5px 12px;
  border: 1px solid rgba(0, 212, 255, 0.25);
  border-radius: 6px;
  transition: all 0.2s ease;
  background: rgba(0, 212, 255, 0.05);
}
.sidebar-link:hover {
  background: rgba(0, 212, 255, 0.12);
  border-color: rgba(0, 212, 255, 0.5);
  color: #00d4ff;
  transform: translateY(-1px);
}
.logout-btn {
  font-size: 12px;
  color: var(--text-muted);
  text-decoration: none;
  padding: 5px 12px;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  transition: all 0.2s ease;
}
.logout-btn:hover {
  color: #ff4757;
  border-color: #ff4757;
  background: rgba(255, 71, 87, 0.08);
  transform: translateY(-1px);
}


/* ====== 亮色模式（白底） ====== */
body.theme-light {
  --bg-primary: #f5f6fa;
  --bg-secondary: #ffffff;
  --bg-card: #ffffff;
  --bg-card-hover: #f8f9fb;
  --border-color: #e2e8f0;
  --border-glow: #00d4ff15;
  --text-primary: #1a2332;
  --text-secondary: #475569;
  --text-muted: #94a3b8;
  --shadow-card: 0 1px 6px rgba(0,0,0,0.06);
  --shadow-glow: 0 0 10px rgba(0,212,255,0.03);
}
body.theme-light { background: #f5f6fa; }
body.theme-light .app-container { background: #f5f6fa; }
body.theme-light .sidebar { background: #ffffff; border-right: 1px solid #e2e8f0; }
body.theme-light .sidebar-header { border-bottom: 1px solid #e2e8f0; }
body.theme-light .nav-item { color: #475569; }
body.theme-light .nav-item:hover { background: #f1f5f9; }
body.theme-light .nav-item.active { background: rgba(0,212,255,0.08); color: #0099cc; }
body.theme-light .top-bar { background: rgba(255,255,255,0.95); border-bottom: 1px solid #e2e8f0; }
body.theme-light .config-card { background: #ffffff; border-color: #e2e8f0; }
body.theme-light input,
body.theme-light textarea,
body.theme-light select { background: #ffffff; color: #1a2332; border-color: #d1d9e6; }
body.theme-light input:focus { border-color: #00d4ff; }
body.theme-light .login-card { background: #ffffff; }
body.theme-light .logout-btn { color: #666; border-color: #e2e8f0; }
body.theme-light .logout-btn:hover { color: #ff1744; border-color: #ff1744; }
body.theme-light .btn-primary { color: #fff; }
body.theme-light .tab-bar { border-bottom-color: #e2e8f0; }
body.theme-light .tab-btn { color: #64748b; }
body.theme-light .tab-btn.active { color: #0099cc; }
body.theme-light .pagination a { background: #ffffff; border-color: #e2e8f0; color: #475569; }
body.theme-light .pagination .current { background: linear-gradient(135deg, #00d4ff, #0088ff); color: #fff; border-color: transparent; }
body.theme-light .empty-state { color: #94a3b8; }
body.theme-light .image-item .info { background: rgba(255,255,255,0.95); }
body.theme-light .badge-muted { background: #f1f5f9; color: #64748b; }
body.theme-light .info-row .label { color: #64748b; }