/* 全局样式 */
:root {
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --bg: #f1f5f9;
  --card: #ffffff;
  --text: #1e293b;
  --muted: #64748b;
  --border: #e2e8f0;
  --green: #16a34a;
  --red: #dc2626;
  --orange: #ea580c;
  --radius: 12px;
  --shadow: 0 1px 3px rgba(0,0,0,.08);
}
* { margin:0; padding:0; box-sizing:border-box; }
body { font-family: -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif; background: var(--bg); color: var(--text); }
#app { min-height: 100vh; }

/* 登录页 */
.login-wrap { display:flex; align-items:center; justify-content:center; min-height:100vh; background:linear-gradient(135deg,#1e3a8a,#2563eb 60%,#3b82f6); }
.login-card { background:#fff; border-radius:16px; padding:40px 36px; width:360px; box-shadow:0 20px 60px rgba(0,0,0,.25); }
.login-card h1 { font-size:22px; text-align:center; margin-bottom:6px; }
.login-card .sub { text-align:center; color:var(--muted); font-size:13px; margin-bottom:24px; }
.login-card .brand-tags { text-align:center; margin-bottom:20px; }
.login-card .brand-tags span { display:inline-block; font-size:11px; padding:3px 8px; border-radius:20px; color:#fff; margin:0 3px; }

/* 布局 */
.layout { display:flex; min-height:100vh; }
.sidebar { width:220px; background:#0f172a; color:#cbd5e1; flex-shrink:0; display:flex; flex-direction:column; position:fixed; top:0; bottom:0; left:0; z-index:50; }
.sidebar .logo { padding:20px 18px; font-size:16px; font-weight:700; color:#fff; border-bottom:1px solid #1e293b; display:flex; align-items:center; gap:8px; }
.sidebar nav { flex:1; padding:12px 8px; overflow-y:auto; }
.sidebar nav a { display:flex; align-items:center; gap:10px; padding:11px 14px; border-radius:8px; color:#94a3b8; text-decoration:none; font-size:14px; margin-bottom:2px; transition:.15s; }
.sidebar nav a:hover { background:#1e293b; color:#fff; }
.sidebar nav a.active { background:var(--primary); color:#fff; }
.sidebar .user-box { padding:14px; border-top:1px solid #1e293b; font-size:13px; }
.sidebar .user-box .name { color:#fff; font-weight:600; }
.main { flex:1; margin-left:220px; padding:24px 28px; min-width:0; }

/* 顶栏 */
.topbar { display:flex; align-items:center; justify-content:space-between; margin-bottom:20px; }
.topbar h2 { font-size:20px; }
.topbar .actions { display:flex; gap:8px; }

/* 卡片与栅格 */
.card { background:var(--card); border-radius:var(--radius); box-shadow:var(--shadow); padding:18px 20px; margin-bottom:16px; }
.grid { display:grid; gap:14px; }
.grid-2 { grid-template-columns:repeat(2,1fr); }
.grid-3 { grid-template-columns:repeat(3,1fr); }
.grid-4 { grid-template-columns:repeat(4,1fr); }
@media (max-width: 1100px){ .grid-4{grid-template-columns:repeat(2,1fr);} .grid-3{grid-template-columns:repeat(2,1fr);} }
@media (max-width: 720px){ .grid-2,.grid-3,.grid-4{grid-template-columns:1fr;} .main{margin-left:0;padding:16px;} .sidebar{display:none;} }

/* 统计卡 */
.stat-card { background:var(--card); border-radius:var(--radius); box-shadow:var(--shadow); padding:18px; }
.stat-card .num { font-size:28px; font-weight:700; margin-top:6px; }
.stat-card .label { color:var(--muted); font-size:13px; }

/* 表单 */
.form-row { margin-bottom:14px; }
label { display:block; font-size:13px; font-weight:600; margin-bottom:6px; color:#334155; }
input, select, textarea { width:100%; padding:9px 12px; border:1px solid var(--border); border-radius:8px; font-size:14px; font-family:inherit; background:#fff; }
input:focus, select:focus, textarea:focus { outline:2px solid var(--primary); border-color:transparent; }
textarea { resize:vertical; min-height:70px; }

/* 按钮 */
.btn { display:inline-flex; align-items:center; gap:6px; padding:9px 16px; border-radius:8px; border:none; font-size:14px; cursor:pointer; font-weight:600; transition:.15s; text-decoration:none; }
.btn-primary { background:var(--primary); color:#fff; }
.btn-primary:hover { background:var(--primary-dark); }
.btn-success { background:var(--green); color:#fff; }
.btn-outline { background:#fff; border:1px solid var(--border); color:var(--text); }
.btn-outline:hover { border-color:var(--primary); color:var(--primary); }
.btn-danger { background:#fee2e2; color:var(--red); }
.btn-warning { background:#f59e0b; color:#fff; }
.btn-sm { padding:5px 10px; font-size:12px; }
.btn:disabled { opacity:.5; cursor:not-allowed; }

/* 表格 */
table { width:100%; border-collapse:collapse; font-size:14px; }
th { text-align:left; padding:10px 12px; background:#f8fafc; color:#475569; font-size:12px; text-transform:uppercase; letter-spacing:.03em; border-bottom:1px solid var(--border); }
td { padding:10px 12px; border-bottom:1px solid #f1f5f9; vertical-align:middle; }
tr:hover td { background:#f8fafc; }

/* 标签 */
.badge { display:inline-block; padding:2px 10px; border-radius:20px; font-size:12px; font-weight:600; }
.badge-green { background:#dcfce7; color:var(--green); }
.badge-orange { background:#ffedd5; color:var(--orange); }
.badge-red { background:#fee2e2; color:var(--red); }
.badge-blue { background:#dbeafe; color:var(--primary); }
.badge-gray { background:#f1f5f9; color:var(--muted); }

/* 话题标签 */
.topic { display:inline-block; background:#eff6ff; color:var(--primary); border-radius:6px; padding:2px 8px; font-size:12px; margin:2px 3px 2px 0; }

/* 弹窗 */
.modal-mask { position:fixed; inset:0; background:rgba(15,23,42,.5); display:flex; align-items:center; justify-content:center; z-index:100; }
.modal { background:#fff; border-radius:14px; padding:24px; width:560px; max-width:92vw; max-height:88vh; overflow-y:auto; }
.modal h3 { margin-bottom:16px; font-size:18px; }
.modal-actions { display:flex; justify-content:flex-end; gap:8px; margin-top:18px; }

/* Toast */
.toast-wrap { position:fixed; top:20px; right:20px; z-index:200; display:flex; flex-direction:column; gap:8px; }
.toast { background:#0f172a; color:#fff; padding:11px 18px; border-radius:10px; font-size:14px; box-shadow:0 8px 24px rgba(0,0,0,.2); animation:slideIn .25s ease; }
.toast.ok { background:var(--green); } .toast.err { background:var(--red); }
@keyframes slideIn { from{transform:translateX(30px);opacity:0;} to{transform:none;opacity:1;} }

/* 素材卡片 */
.mat-card { border:1px solid var(--border); border-radius:10px; overflow:hidden; background:#fff; }
.mat-card img { width:100%; height:150px; object-fit:cover; }
.mat-card video { width:100%; height:150px; object-fit:cover; }
.mat-card .body { padding:10px 12px; }
.mat-card .title { font-size:13px; font-weight:600; margin-bottom:4px; }
.mat-card .meta { font-size:11px; color:var(--muted); }
.mat-card .actions { padding:8px 12px; border-top:1px solid #f1f5f9; display:flex; gap:6px; }

/* 空态 */
.empty { text-align:center; color:var(--muted); padding:40px 0; font-size:14px; }

/* 文案块 */
.copy-block { background:#f8fafc; border:1px solid var(--border); border-left:4px solid var(--primary); border-radius:8px; padding:12px 14px; margin-bottom:12px; }
.copy-block .tag { font-size:12px; color:var(--primary); font-weight:700; margin-bottom:4px; }
.copy-block pre { white-space:pre-wrap; font-family:inherit; font-size:14px; line-height:1.7; }

/* 时间线 */
.timeline { border-left:2px solid var(--border); padding-left:18px; }
.tl-item { position:relative; margin-bottom:16px; }
.tl-item::before { content:''; position:absolute; left:-24px; top:6px; width:10px; height:10px; border-radius:50%; background:var(--primary); }
.tl-item .tl-title { font-weight:700; font-size:14px; }
.tl-item .tl-dur { color:var(--muted); font-size:12px; margin-left:6px; }
.tl-item .tl-action { font-size:13px; color:#475569; margin-top:4px; line-height:1.6; }
.tl-item .tl-tips { font-size:12px; color:var(--orange); margin-top:4px; }

/* 响应式表格容器 */
.table-wrap { overflow-x:auto; }

/* 开关 */
.switch { position:relative; display:inline-block; width:46px; height:26px; flex-shrink:0; }
.switch input { opacity:0; width:0; height:0; }
.switch .slider { position:absolute; cursor:pointer; inset:0; background:#cbd5e1; border-radius:26px; transition:.2s; }
.switch .slider::before { content:''; position:absolute; height:20px; width:20px; left:3px; top:3px; background:#fff; border-radius:50%; transition:.2s; }
.switch input:checked + .slider { background:var(--green); }
.switch input:checked + .slider::before { transform:translateX(20px); }