/* ========================================
   清香白酒管理后台 - 样式系统
   ======================================== */

:root {
  --primary: #8B0000;
  --primary-light: #DC143C;
  --primary-bg: rgba(139,0,0,0.06);
  --success: #07C160;
  --success-bg: rgba(7,193,96,0.08);
  --warning: #FF9500;
  --warning-bg: rgba(255,149,0,0.08);
  --danger: #FA5151;
  --danger-bg: rgba(250,81,81,0.08);
  --info: #1890FF;
  --text: #333333;
  --text-secondary: #666666;
  --text-muted: #999999;
  --border: #e8e8e8;
  --bg: #f5f7fa;
  --bg-white: #ffffff;
  --sidebar-w: 220px;
  --header-h: 60px;
  --radius: 8px;
  --shadow: 0 2px 12px rgba(0,0,0,0.06);
}

* { margin:0; padding:0; box-sizing:border-box; }
body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif; font-size:14px; color:var(--text); background:var(--bg); }

/* ===== 侧边栏 ===== */
.sidebar {
  position:fixed; top:0; left:0; bottom:0; width:var(--sidebar-w);
  background:linear-gradient(180deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
  color:#fff; display:flex; flex-direction:column; z-index:100;
}
.sidebar-logo { padding:24px 20px 20px; text-align:center; border-bottom:1px solid rgba(255,255,255,0.08); }
.logo-icon { font-size:36px; display:block; }
.logo-text { font-size:18px; font-weight:700; display:block; margin-top:4px; }
.logo-sub { font-size:11px; opacity:0.5; display:block; margin-top:2px; }
.sidebar-nav { flex:1; padding:12px 0; overflow-y:auto; }
.nav-item {
  display:flex; align-items:center; gap:10px; padding:12px 24px;
  font-size:14px; color:rgba(255,255,255,0.65); text-decoration:none;
  cursor:pointer; transition:all .2s; border-left:3px solid transparent;
  margin:2px 0;
}
.nav-item:hover { color:#fff; background:rgba(255,255,255,0.06); }
.nav-item.active { color:#fff; background:rgba(139,0,0,0.35); border-left-color:var(--primary-light); font-weight:600; }
.nav-icon { font-size:18px; width:24px; text-align:center; }
.sidebar-footer { padding:16px 20px; border-top:1px solid rgba(255,255,255,0.08); display:flex; align-items:center; justify-content:space-between; font-size:13px; }
.admin-name { opacity:0.7; }
.logout-btn { color:var(--danger); cursor:pointer; font-size:13px; }
.logout-btn:hover { opacity:0.8; }

/* ===== 主内容区 ===== */
.main-content { margin-left:var(--sidebar-w); min-height:100vh; }
.page { display:none; }
.page.active { display:block; }

/* ===== 登录页 ===== */
#page-login.active {
  display:flex; align-items:center; justify-content:center; min-height:100vh;
  margin-left:0; background:linear-gradient(135deg, #1a1a2e, #0f3460);
}
.login-container { width:100%; max-width:420px; padding:24px; }
.login-card { background:var(--bg-white); border-radius:12px; padding:48px 40px; box-shadow:0 8px 40px rgba(0,0,0,0.2); }
.login-header { text-align:center; margin-bottom:36px; }
.login-icon { font-size:48px; display:block; }
.login-header h1 { font-size:22px; margin-top:12px; color:var(--text); }
.login-header p { font-size:13px; color:var(--text-muted); margin-top:4px; }
.login-form { display:flex; flex-direction:column; gap:20px; }
.login-hint { text-align:center; font-size:12px; color:var(--text-muted); margin-top:20px; }

/* ===== 页面容器 ===== */
.page-header {
  height:var(--header-h); background:var(--bg-white); padding:0 28px;
  display:flex; align-items:center; justify-content:space-between;
  border-bottom:1px solid var(--border); position:sticky; top:0; z-index:10;
}
.page-header h2 { font-size:18px; font-weight:600; }
.header-right { display:flex; align-items:center; gap:16px; }
.header-time { font-size:13px; color:var(--text-muted); }
.page-body { padding:24px; }

/* ===== 通用组件 ===== */
.form-group { display:flex; flex-direction:column; gap:6px; }
.form-group label { font-size:13px; color:var(--text-secondary); font-weight:500; }
.form-group input, .form-group select, .form-group textarea {
  padding:10px 14px; border:1px solid var(--border); border-radius:var(--radius);
  font-size:14px; outline:none; transition:border .2s; background:var(--bg-white);
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus { border-color:var(--primary); }
.form-error { color:var(--danger); font-size:13px; padding:8px 12px; background:var(--danger-bg); border-radius:var(--radius); }

.btn { display:inline-flex; align-items:center; justify-content:center; gap:6px; padding:8px 20px; font-size:14px; font-weight:500; border:none; border-radius:var(--radius); cursor:pointer; transition:all .2s; white-space:nowrap; }
.btn:hover { opacity:0.85; }
.btn-primary { background:var(--primary); color:#fff; }
.btn-success { background:var(--success); color:#fff; }
.btn-warning { background:var(--warning); color:#fff; }
.btn-danger { background:var(--danger); color:#fff; }
.btn-outline { background:transparent; border:1px solid var(--border); color:var(--text-secondary); }
.btn-outline:hover { border-color:var(--primary); color:var(--primary); }
.btn-sm { padding:4px 12px; font-size:12px; }
.btn-block { display:flex; width:100%; padding:12px; font-size:15px; }
.btn:disabled { opacity:0.5; cursor:not-allowed; }

/* 卡片 */
.card { background:var(--bg-white); border-radius:var(--radius); box-shadow:var(--shadow); }
.card-header { padding:16px 20px; border-bottom:1px solid var(--border); display:flex; align-items:center; justify-content:space-between; }
.card-header h3 { font-size:15px; font-weight:600; }
.card-body { padding:20px; }
.card-footer { padding:12px 20px; border-top:1px solid var(--border); }

/* 指标卡片 */
.stat-grid { display:grid; grid-template-columns:repeat(4, 1fr); gap:16px; margin-bottom:24px; }
.stat-card { background:var(--bg-white); border-radius:var(--radius); padding:20px; box-shadow:var(--shadow); }
.stat-card .stat-label { font-size:13px; color:var(--text-muted); margin-bottom:8px; }
.stat-card .stat-value { font-size:28px; font-weight:700; color:var(--text); }
.stat-card .stat-change { font-size:12px; margin-top:4px; }
.stat-card .stat-change.up { color:var(--danger); }
.stat-card .stat-change.down { color:var(--success); }

/* 表格 */
.table-wrap { overflow-x:auto; }
table { width:100%; border-collapse:collapse; }
table th, table td { padding:12px 14px; text-align:left; font-size:13px; border-bottom:1px solid var(--border); }
table th { background:var(--bg); color:var(--text-secondary); font-weight:600; white-space:nowrap; position:sticky; top:0; }
table tbody tr:hover { background:var(--primary-bg); }
table td .cell-mono { font-family:"SF Mono",Monaco,Consolas,monospace; font-size:12px; color:var(--text-secondary); }

/* 标签/徽章 */
.badge { display:inline-block; padding:2px 10px; border-radius:12px; font-size:12px; font-weight:500; }
.badge-success { background:var(--success-bg); color:var(--success); }
.badge-warning { background:var(--warning-bg); color:var(--warning); }
.badge-danger { background:var(--danger-bg); color:var(--danger); }
.badge-info { background:rgba(24,144,255,0.08); color:var(--info); }
.badge-muted { background:#f0f0f0; color:var(--text-muted); }

/* 弹窗/Modal */
.modal-overlay {
  display:none; position:fixed; top:0; left:0; right:0; bottom:0;
  background:rgba(0,0,0,0.45); z-index:200; align-items:center; justify-content:center;
}
.modal-overlay.show { display:flex; }
.modal {
  background:var(--bg-white); border-radius:12px; width:90%; max-width:480px;
  max-height:80vh; overflow-y:auto; box-shadow:0 8px 40px rgba(0,0,0,0.15);
}
.modal-header { padding:18px 24px; border-bottom:1px solid var(--border); display:flex; align-items:center; justify-content:space-between; }
.modal-header h3 { font-size:16px; font-weight:600; }
.modal-close { background:none; border:none; font-size:22px; color:var(--text-muted); cursor:pointer; padding:0 4px; }
.modal-body { padding:24px; }
.modal-footer { padding:16px 24px; border-top:1px solid var(--border); display:flex; justify-content:flex-end; gap:8px; }

/* 搜索/筛选栏 */
.toolbar { display:flex; align-items:center; gap:12px; margin-bottom:20px; flex-wrap:wrap; }
.toolbar input, .toolbar select { padding:8px 12px; border:1px solid var(--border); border-radius:var(--radius); font-size:13px; outline:none; }
.toolbar input { width:220px; }
.toolbar input:focus, .toolbar select:focus { border-color:var(--primary); }

/* 分页 */
.pagination { display:flex; align-items:center; justify-content:center; gap:6px; margin-top:20px; }
.pagination a { display:inline-block; padding:6px 12px; border:1px solid var(--border); border-radius:4px; font-size:13px; color:var(--text-secondary); cursor:pointer; text-decoration:none; }
.pagination a:hover { border-color:var(--primary); color:var(--primary); }
.pagination a.active { background:var(--primary); color:#fff; border-color:var(--primary); }
.pagination a.disabled { color:var(--text-muted); cursor:not-allowed; opacity:0.5; }
.pagination span { font-size:13px; color:var(--text-muted); }

/* 表单行 */
.form-row { display:grid; grid-template-columns:repeat(2, 1fr); gap:16px; }
.form-row.col3 { grid-template-columns:repeat(3, 1fr); }
.info-row { display:flex; padding:10px 0; border-bottom:1px solid var(--border); font-size:13px; }
.info-row:last-child { border-bottom:none; }
.info-label { color:var(--text-muted); width:100px; flex-shrink:0; }
.info-value { color:var(--text); flex:1; }

/* 金额高亮 */
.amount { font-weight:600; }
.amount.positive { color:var(--danger); }
.amount.negative { color:var(--success); }

/* 空状态 */
.empty { text-align:center; padding:60px 20px; color:var(--text-muted); font-size:14px; }

/* Toast */
.toast {
  position:fixed; top:24px; left:50%; transform:translateX(-50%); z-index:999;
  padding:12px 28px; border-radius:var(--radius); font-size:14px; color:#fff;
  box-shadow:0 4px 16px rgba(0,0,0,0.15); animation:toast-in .3s;
}
.toast-success { background:var(--success); }
.toast-error { background:var(--danger); }
@keyframes toast-in { from{opacity:0;transform:translateX(-50%) translateY(-10px)} to{opacity:1;transform:translateX(-50%) translateY(0)} }

/* 图表容器 */
.chart-wrap { background:var(--bg-white); border-radius:var(--radius); padding:20px; box-shadow:var(--shadow); margin-bottom:16px; }
.chart-wrap canvas { width:100%; max-height:300px; }

/* 响应式 */
@media (max-width: 768px) {
  .sidebar { width:0; overflow:hidden; }
  .main-content { margin-left:0; }
  .stat-grid { grid-template-columns:repeat(2, 1fr); }
  .form-row { grid-template-columns:1fr; }
  .toolbar input { width:100%; }
}