:root {
    --primary: #52B99C;
    --primary-hover: #45a88c;
    --primary-light: rgba(82, 185, 156, 0.1);
    --danger: #E76F51;
    --danger-light: rgba(231, 111, 81, 0.1);
    --warning: #F4A261;
    --warning-light: rgba(244, 162, 97, 0.1);
    --success: #52B99C;
    --bg: #F8FAFA;
    --card-bg: #FFFFFF;
    --text: #2C3E50;
    --text-muted: #8E9EAB;
    --border: #E0E8E4;
    --sidebar-bg: #FFFFFF;
    --input-bg: #F8FAFA;
    --radius: 12px;
    --radius-sm: 8px;
    --shadow: 0 2px 8px rgba(0,0,0,0.04);
    --shadow-lg: 0 8px 32px rgba(0,0,0,0.08);
    --font: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    --mono: 'SF Mono', 'Fira Code', 'Consolas', 'Courier New', monospace;
    --sidebar-w: 240px;
}
[data-theme="dark"] {
    --bg: #1A1D1F; --card-bg: #25292B; --text: #E8E8E8; --text-muted: #8E9EAB;
    --border: #33373A; --sidebar-bg: #25292B; --input-bg: #1A1D1F;
    --primary-light: rgba(82, 185, 156, 0.15);
    --shadow: 0 2px 8px rgba(0,0,0,0.2); --shadow-lg: 0 8px 32px rgba(0,0,0,0.3);
}
* { margin:0; padding:0; box-sizing:border-box; }
html, body { height:100%; }
body { font-family: var(--font); background: var(--bg); color: var(--text); font-size:14px; overflow:hidden; }
a { color:inherit; text-decoration:none; }
button { font-family:inherit; cursor:pointer; border:none; background:none; color:inherit; }
input, select, textarea { font-family:inherit; font-size:14px; }

.login-screen { display:flex; align-items:center; justify-content:center; min-height:100vh; padding:20px; background:var(--bg); }
.login-card { background:var(--card-bg); border-radius:20px; padding:40px 36px; max-width:400px; width:100%; box-shadow:var(--shadow-lg); border:1px solid var(--border); }
.login-icon { width:64px; height:64px; margin:0 auto 20px; background:var(--primary-light); border-radius:16px; display:flex; align-items:center; justify-content:center; color:var(--primary); }
.login-card h1 { text-align:center; font-size:22px; font-weight:700; margin-bottom:6px; }
.login-sub { text-align:center; color:var(--text-muted); font-size:14px; margin-bottom:28px; }
.login-card input { width:100%; padding:12px 16px; border:1px solid var(--border); border-radius:var(--radius-sm); background:var(--input-bg); color:var(--text); margin-bottom:14px; outline:none; transition:border-color .2s; }
.login-card input:focus { border-color:var(--primary); }
.login-card button[type="submit"] { width:100%; padding:13px; background:var(--primary); color:#fff; border-radius:var(--radius-sm); font-size:15px; font-weight:600; transition:background .2s; }
.login-card button[type="submit"]:hover { background:var(--primary-hover); }
.login-card button[type="submit"]:disabled { opacity:.6; }

.main-app { display:flex; height:100vh; }
.sidebar { width:var(--sidebar-w); background:var(--sidebar-bg); border-right:1px solid var(--border); display:flex; flex-direction:column; flex-shrink:0; }
.sidebar-logo { display:flex; align-items:center; gap:10px; padding:20px 20px; font-weight:700; font-size:16px; color:var(--primary); flex-shrink:0; }
.sidebar-logo svg { flex-shrink:0; }
.sidebar-nav { flex:1; padding:8px 12px; overflow-y:auto; }
.nav-item { display:flex; align-items:center; gap:12px; padding:10px 14px; border-radius:var(--radius-sm); color:var(--text-muted); font-size:14px; font-weight:500; transition:all .15s; margin-bottom:2px; cursor:pointer; }
.nav-item svg { width:18px; height:18px; flex-shrink:0; }
.nav-item:hover { background:var(--primary-light); color:var(--text); }
.nav-item.active { background:var(--primary-light); color:var(--primary); font-weight:600; }
.sidebar-footer { padding:12px 16px; border-top:1px solid var(--border); display:flex; align-items:center; gap:8px; flex-shrink:0; }
.theme-toggle { width:36px; height:36px; border-radius:50%; display:flex; align-items:center; justify-content:center; color:var(--text-muted); transition:all .15s; flex-shrink:0; }
.theme-toggle:hover { background:var(--primary-light); color:var(--primary); }
.theme-toggle svg { width:18px; height:18px; }
.icon-moon { display:none; }
[data-theme="dark"] .icon-sun { display:none; }
[data-theme="dark"] .icon-moon { display:block; }
.user-info { flex:1; display:flex; align-items:center; gap:8px; min-width:0; }
.user-avatar { width:28px; height:28px; border-radius:50%; background:var(--primary); color:#fff; display:flex; align-items:center; justify-content:center; font-size:12px; font-weight:600; flex-shrink:0; }
.user-info span { font-size:13px; color:var(--text-muted); white-space:nowrap; overflow:hidden; text-overflow:ellipsis; }
.logout-btn { width:36px; height:36px; border-radius:50%; display:flex; align-items:center; justify-content:center; color:var(--text-muted); transition:all .15s; flex-shrink:0; }
.logout-btn:hover { background:var(--danger-light); color:var(--danger); }
.logout-btn svg { width:18px; height:18px; }

.content { flex:1; overflow-y:auto; padding:24px 32px; min-width:0; }
.page-header { display:flex; align-items:center; justify-content:space-between; margin-bottom:24px; }
.page-header h2 { font-size:20px; font-weight:700; }
.page-header .actions { display:flex; gap:8px; }

.btn { display:inline-flex; align-items:center; gap:6px; padding:8px 16px; border-radius:var(--radius-sm); font-size:13px; font-weight:600; transition:all .15s; border:1px solid transparent; }
.btn svg { width:16px; height:16px; }
.btn-primary { background:var(--primary); color:#fff; }
.btn-primary:hover { background:var(--primary-hover); }
.btn-outline { border-color:var(--border); color:var(--text); background:var(--card-bg); }
.btn-outline:hover { border-color:var(--primary); color:var(--primary); }
.btn-danger { color:var(--danger); }
.btn-danger:hover { background:var(--danger-light); }
.btn-sm { padding:5px 10px; font-size:12px; }
.btn-icon { width:32px; height:32px; padding:0; border-radius:var(--radius-sm); display:inline-flex; align-items:center; justify-content:center; color:var(--text-muted); transition:all .15s; }
.btn-icon:hover { background:var(--primary-light); color:var(--primary); }
.btn-icon.danger:hover { background:var(--danger-light); color:var(--danger); }
.btn-icon svg { width:16px; height:16px; }

.card { background:var(--card-bg); border-radius:var(--radius); border:1px solid var(--border); box-shadow:var(--shadow); overflow:hidden; }
.stats-grid { display:grid; grid-template-columns:repeat(4,1fr); gap:16px; margin-bottom:24px; }
.stat-card { background:var(--card-bg); border-radius:var(--radius); border:1px solid var(--border); 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; }

.table-wrap { overflow-x:auto; }
table { width:100%; border-collapse:collapse; font-size:14px; }
thead { background:var(--input-bg); }
th { text-align:left; padding:12px 16px; font-weight:600; color:var(--text-muted); font-size:12px; text-transform:uppercase; letter-spacing:.5px; }
td { padding:12px 16px; border-top:1px solid var(--border); }
tbody tr:hover { background:var(--input-bg); }
td .row-actions { display:flex; gap:4px; }
.mono { font-family:var(--mono); font-size:13px; }

.badge { display:inline-flex; align-items:center; gap:4px; padding:3px 10px; border-radius:20px; font-size:12px; font-weight:600; }
.badge-success { background:rgba(82,185,156,0.12); color:var(--success); }
.badge-warning { background:rgba(244,162,97,0.12); color:var(--warning); }
.badge-muted { background:var(--input-bg); color:var(--text-muted); }
.tag-badge { display:inline-flex; padding:2px 10px; border-radius:6px; font-size:12px; font-weight:600; margin:1px; }

.modal-card { background:var(--card-bg); border-radius:var(--radius); width:90%; max-width:640px; max-height:85vh; display:flex; flex-direction:column; box-shadow:var(--shadow-lg); border:1px solid var(--border); }
.modal-card.wide { max-width:800px; }
.modal-header { padding:20px 24px; border-bottom:1px solid var(--border); flex-shrink:0; display:flex; align-items:center; justify-content:space-between; }
.modal-header h3 { font-size:18px; font-weight:700; }
.modal-body { padding:24px; overflow-y:auto; flex:1; }
.modal-actions { padding:16px 24px; border-top:1px solid var(--border); display:flex; justify-content:flex-end; gap:8px; flex-shrink:0; }

.form-group { margin-bottom:18px; }
.form-group label { display:block; font-size:13px; font-weight:600; margin-bottom:6px; }
.form-group input, .form-group select, .form-group textarea { width:100%; padding:10px 14px; border:1px solid var(--border); border-radius:var(--radius-sm); background:var(--input-bg); color:var(--text); outline:none; transition:border-color .2s; }
.form-group input:focus, .form-group select:focus, .form-group textarea:focus { border-color:var(--primary); }
.form-group textarea { font-family:var(--mono); resize:vertical; min-height:80px; }
.form-group .hint { font-size:12px; color:var(--text-muted); margin-top:4px; }
.form-row { display:flex; gap:16px; }
.form-row .form-group { flex:1; }

.switch { position:relative; display:inline-block; width:44px; height:24px; }
.switch input { opacity:0; width:0; height:0; }
.slider { position:absolute; cursor:pointer; top:0; left:0; right:0; bottom:0; background:var(--border); border-radius:24px; transition:.3s; }
.slider::before { position:absolute; content:""; height:18px; width:18px; left:3px; bottom:3px; background:#fff; border-radius:50%; transition:.3s; }
.switch input:checked + .slider { background:var(--primary); }
.switch input:checked + .slider::before { transform:translateX(20px); }

.toast-container { position:fixed; bottom:20px; right:20px; z-index:20000; display:flex; flex-direction:column; gap:8px; }
.toast { background:var(--card-bg); border:1px solid var(--border); border-radius:var(--radius-sm); padding:12px 20px; box-shadow:var(--shadow-lg); display:flex; align-items:center; gap:10px; font-size:14px; min-width:200px; }
.toast.success { border-left:3px solid var(--success); }
.toast.error { border-left:3px solid var(--danger); }
.toast.info { border-left:3px solid var(--primary); }

.empty-state { text-align:center; padding:60px 20px; color:var(--text-muted); }
.filter-bar { display:flex; gap:12px; margin-bottom:16px; align-items:center; flex-wrap:wrap; }
.filter-bar select, .filter-bar input { padding:8px 12px; border:1px solid var(--border); border-radius:var(--radius-sm); background:var(--card-bg); color:var(--text); font-size:13px; outline:none; }

.news-card { background:var(--card-bg); border-radius:var(--radius); border:1px solid var(--border); box-shadow:var(--shadow); padding:20px; margin-bottom:16px; cursor:pointer; transition:border-color .2s; }
.news-card:hover { border-color:var(--primary); }
.news-card .news-title { font-size:17px; font-weight:700; margin-bottom:8px; }
.news-card .news-summary { font-size:14px; color:var(--text-muted); line-height:1.6; margin-bottom:10px; }
.news-card .news-meta { display:flex; align-items:center; gap:12px; font-size:12px; color:var(--text-muted); flex-wrap:wrap; }
.news-card .news-meta .source { font-weight:600; color:var(--primary); }
.news-card .news-tags { margin-top:8px; }

/* 板块分析徽章 */
.sector-badge { display:inline-flex; align-items:center; gap:4px; padding:2px 8px 2px 10px; border-radius:6px; font-size:12px; font-weight:600; margin:1px; }
.sector-badge .sector-sentiment-tag { font-size:11px; font-weight:500; opacity:.85; padding:1px 6px; border-radius:10px; }
.sector-positive { background:rgba(82,185,156,0.12); color:var(--success); }
.sector-positive .sector-sentiment-tag { background:rgba(82,185,156,0.2); }
.sector-neutral { background:var(--input-bg); color:var(--text-muted); }
.sector-neutral .sector-sentiment-tag { background:rgba(142,158,171,0.15); }
.sector-negative { background:rgba(231,111,81,0.12); color:var(--danger); }
.sector-negative .sector-sentiment-tag { background:rgba(231,111,81,0.2); }

/* 关联股票徽章 */
.stock-badge { display:inline-flex; align-items:center; gap:2px; padding:2px 8px; border-radius:6px; font-size:12px; font-weight:600; margin:1px; }
.stock-up { background:rgba(231,111,81,0.12); color:var(--danger); }
.stock-down { background:rgba(82,185,156,0.12); color:var(--success); }

/* 板块分析编辑器 */
.sector-editor { display:flex; flex-direction:column; gap:8px; }
.sector-row { display:flex; gap:8px; align-items:center; }
.sector-row .sector-name { flex:0 0 120px; }
.sector-row .sector-sentiment { flex:0 0 90px; }
.sector-row .sector-reason { flex:1; }
.sector-row .sector-name, .sector-row .sector-sentiment, .sector-row .sector-reason { padding:8px 12px; border:1px solid var(--border); border-radius:var(--radius-sm); background:var(--input-bg); color:var(--text); outline:none; font-size:13px; }
.sector-row .sector-name:focus, .sector-row .sector-sentiment:focus, .sector-row .sector-reason:focus { border-color:var(--primary); }

/* 板块分析展示（详情） */
.sector-analysis { margin-bottom:20px; }
.sector-analysis-title { font-size:14px; font-weight:700; margin-bottom:10px; }
.sector-analysis-list { display:flex; flex-direction:column; gap:8px; }
.sector-analysis-item { display:flex; align-items:flex-start; gap:10px; padding:10px 14px; border-radius:var(--radius-sm); background:var(--input-bg); }
.sector-analysis-item .sector-name { font-weight:700; font-size:14px; white-space:nowrap; }
.sector-analysis-item .sector-reason { font-size:13px; color:var(--text-muted); flex:1; }

.news-detail { background:var(--card-bg); border-radius:var(--radius); border:1px solid var(--border); box-shadow:var(--shadow); padding:32px; }
.news-detail h1 { font-size:24px; font-weight:700; margin-bottom:12px; }
.news-detail .meta { color:var(--text-muted); font-size:13px; margin-bottom:20px; display:flex; gap:16px; flex-wrap:wrap; }
.news-detail .content { font-size:15px; line-height:1.8; white-space:pre-wrap; }

.pagination { display:flex; align-items:center; justify-content:center; gap:4px; margin-top:16px; }
.pagination button { padding:6px 12px; border-radius:var(--radius-sm); font-size:13px; border:1px solid var(--border); background:var(--card-bg); color:var(--text); }
.pagination button:hover { border-color:var(--primary); }
.pagination button:disabled { opacity:.4; cursor:not-allowed; }
.pagination span { font-size:13px; color:var(--text-muted); padding:0 8px; }

.settings-row { display:flex; align-items:center; justify-content:space-between; padding:12px 0; border-bottom:1px solid var(--border); }
.settings-row:last-child { border-bottom:none; }
.settings-row .label { font-size:14px; }
.settings-row .desc { font-size:12px; color:var(--text-muted); margin-top:2px; }
.settings-row input { padding:8px 12px; border:1px solid var(--border); border-radius:var(--radius-sm); background:var(--input-bg); color:var(--text); outline:none; min-width:200px; }

@media (max-width:900px) {
    .stats-grid { grid-template-columns:repeat(2,1fr); }
    .sidebar { position:fixed; transform:translateX(-100%); transition:transform .3s; z-index:1000; }
    .sidebar.open { transform:translateX(0); }
    .content { padding:16px; }
}
@media (max-width:600px) { .stats-grid { grid-template-columns:1fr; } .form-row { flex-direction:column; } }