:root { --primary: #6366f1; --primary-dark: #4f46e5; --bg: #0f172a; --card: #1e293b; --card-hover: #334155; --border: #334155; --text: #e2e8f0; --text-muted: #94a3b8; --success: #22c55e; --warning: #f59e0b; --danger: #ef4444; }
* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif; background: var(--bg); color: var(--text); min-height: 100vh; }

/* 登录 */
.login-bg { background: linear-gradient(135deg, #0f172a 0%, #1e1b4b 50%, #0f172a 100%); min-height: 100vh; display: flex; align-items: center; justify-content: center; }
.glass { background: rgba(30, 41, 59, 0.8); backdrop-filter: blur(12px); border: 1px solid rgba(99, 102, 241, 0.2); border-radius: 16px; }
.login-box { padding: 48px; width: 420px; }
.login-header { text-align: center; margin-bottom: 32px; }
.login-logo { font-size: 28px; font-weight: 700; text-shadow: 0 0 20px rgba(99,102,241,0.5); margin-bottom: 8px; }
.login-desc { color: var(--text-muted); font-size: 14px; }
.login-error { color: var(--danger); font-size: 13px; margin-top: 12px; text-align: center; display: none; }

/* 表单 */
.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: 13px; color: var(--text-muted); margin-bottom: 6px; }
input, select, textarea { background: var(--bg); border: 1px solid var(--border); border-radius: 8px; padding: 10px 14px; color: var(--text); font-size: 14px; width: 100%; transition: border-color .2s; }
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--primary); }

/* 按钮 */
.btn { padding: 8px 16px; border-radius: 8px; font-size: 14px; font-weight: 500; cursor: pointer; border: none; transition: all .2s; display: inline-flex; align-items: center; gap: 6px; }
.btn-primary { background: var(--primary); color: white; }
.btn-primary:hover { background: var(--primary-dark); transform: translateY(-1px); }
.btn-success { background: var(--success); color: white; }
.btn-warning { background: var(--warning); color: #1e293b; }
.btn-danger { background: var(--danger); color: white; }
.btn-ghost { background: transparent; color: var(--text-muted); border: 1px solid var(--border); }
.btn-ghost:hover { background: var(--card-hover); color: var(--text); }
.btn-sm { padding: 4px 10px; font-size: 12px; }
.btn-block { width: 100%; justify-content: center; }

/* 侧边栏 */
.sidebar { width: 220px; background: var(--card); border-right: 1px solid var(--border); height: 100vh; position: fixed; left: 0; top: 0; display: flex; flex-direction: column; z-index: 50; }
.sidebar-logo { padding: 20px; border-bottom: 1px solid var(--border); }
.logo-text { font-size: 18px; font-weight: 700; color: var(--primary); }
.logo-sub { font-size: 12px; color: var(--text-muted); margin-top: 4px; }
.sidebar-nav { flex: 1; padding: 8px 0; overflow-y: auto; }
.sidebar-section { padding: 12px 20px 4px; font-size: 11px; font-weight: 600; text-transform: uppercase; color: var(--text-muted); letter-spacing: 1px; }
.sidebar-item { padding: 10px 20px; cursor: pointer; display: flex; align-items: center; gap: 10px; color: var(--text-muted); transition: all .2s; font-size: 14px; }
.sidebar-item:hover { background: var(--card-hover); color: var(--text); }
.sidebar-item.active { background: rgba(99,102,241,0.1); color: var(--primary); border-right: 3px solid var(--primary); }
.sidebar-footer { padding: 12px; border-top: 1px solid var(--border); }

/* 主内容 */
.main { margin-left: 220px; padding: 24px; min-height: 100vh; }
.page-title { font-size: 22px; font-weight: 700; margin-bottom: 20px; display: flex; align-items: center; gap: 10px; }

/* 卡片 */
.card { background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 20px; transition: all .2s; }
.card:hover { border-color: rgba(99,102,241,0.3); }
.stat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 16px; margin-bottom: 24px; }
.stat-card { padding: 20px; border-radius: 12px; background: linear-gradient(135deg, var(--card) 0%, var(--card-hover) 100%); border: 1px solid var(--border); }
.stat-label { font-size: 13px; color: var(--text-muted); margin-bottom: 8px; }
.stat-number { font-size: 28px; font-weight: 700; }

/* 表格 */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
th { text-align: left; padding: 12px 16px; font-size: 12px; font-weight: 600; text-transform: uppercase; color: var(--text-muted); border-bottom: 1px solid var(--border); }
td { padding: 12px 16px; border-bottom: 1px solid var(--border); font-size: 14px; }
tr:hover td { background: rgba(99,102,241,0.05); }

/* 徽章 */
.badge { padding: 3px 10px; border-radius: 20px; font-size: 12px; font-weight: 500; }
.badge-xt { background: rgba(239,68,68,0.15); color: #ef4444; }
.badge-jl { background: rgba(59,130,246,0.15); color: #3b82f6; }
.badge-active { background: rgba(34,197,94,0.15); color: var(--success); }
.badge-expired { background: rgba(245,158,11,0.15); color: var(--warning); }

/* 弹窗 */
.modal-overlay { position: fixed; inset: 0; background: rgba(0,0,0,0.6); backdrop-filter: blur(4px); display: flex; align-items: center; justify-content: center; z-index: 100; }
.modal { background: var(--card); border: 1px solid var(--border); border-radius: 16px; padding: 24px; max-width: 560px; width: 90%; max-height: 80vh; overflow-y: auto; }
.modal-title { font-size: 18px; font-weight: 600; margin-bottom: 16px; }

/* Toast */
.toast { position: fixed; top: 20px; right: 20px; padding: 12px 20px; border-radius: 10px; font-size: 14px; z-index: 200; animation: slideIn .3s ease; }
@keyframes slideIn { from { transform: translateX(100%); opacity: 0; } to { transform: translateX(0); opacity: 1; } }
.toast-success { background: var(--success); color: white; }
.toast-error { background: var(--danger); color: white; }

/* 工具栏 */
.toolbar { display: flex; align-items: center; gap: 12px; margin-bottom: 16px; flex-wrap: wrap; }
.toolbar input, .toolbar select { width: auto; min-width: 160px; }

/* 加载 */
.loading { display: inline-block; width: 16px; height: 16px; border: 2px solid rgba(255,255,255,0.3); border-top-color: white; border-radius: 50%; animation: spin .6s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

/* 分组色块 */
.group-dot { width: 10px; height: 10px; border-radius: 50%; display: inline-block; margin-right: 6px; }

/* 空状态 */
.empty { text-align: center; padding: 60px 20px; color: var(--text-muted); }
.empty i { font-size: 48px; margin-bottom: 16px; display: block; }