@import url('https://fonts.googleapis.com/css2?family=Noto+Serif+SC:wght@500;700;900&family=Source+Sans+3:wght@400;500;600;700&display=swap');

:root{
  --bg:#f4f6f9;
  --surface:rgba(255,255,255,.9);
  --line:#dbe2ea;
  --ink:#131822;
  --ink-soft:#4c5a70;
  --brand:#0f172a;
  --brand-2:#1e293b;
  --accent:#2563eb;
}
*{margin:0;padding:0;box-sizing:border-box}
body{font-family:'Source Sans 3','Noto Sans SC',sans-serif;background:var(--bg);min-height:100vh;overflow-x:hidden;position:relative;color:var(--ink)}
a{color:#1d4ed8;text-decoration:none}
a:hover{text-decoration:underline}
#particles-canvas{position:fixed;top:0;left:0;width:100%;height:100%;z-index:0;pointer-events:none}

.sidebar{width:260px;height:100vh;background:linear-gradient(180deg,rgba(248,251,255,.95),rgba(242,247,255,.9));border-right:1px solid var(--line);padding:24px 18px;position:fixed;left:0;top:0;z-index:10;backdrop-filter:blur(8px)}
.sidebar-header{margin-bottom:20px;padding:0 6px}
.logo{width:46px;height:46px;background:linear-gradient(135deg,#7c3aed,#a855f7);border-radius:12px;color:#fff;font-weight:700;display:flex;align-items:center;justify-content:center;margin-bottom:10px;box-shadow:0 14px 28px rgba(124,58,237,.25)}
.logo-text{font-family:'Noto Serif SC',serif;font-weight:700;font-size:20px;color:var(--ink);line-height:1.2}
.sidebar-subtitle{font-size:13px;color:#6b7b93;margin-top:3px}
.nav-menu{display:flex;flex-direction:column;gap:8px}
.nav-item,.theme-toggle{display:flex;align-items:center;padding:11px 14px;border-radius:10px;text-decoration:none;border:none;background:transparent;cursor:pointer;color:#334155;font-size:15px;font-weight:600;transition:.2s}
.nav-item:hover,.theme-toggle:hover{background:rgba(124,58,237,.08);text-decoration:none}
.nav-item.active{background:linear-gradient(135deg,#f3e8ff,#ede9fe);color:#7c3aed;box-shadow:inset 0 0 0 1px rgba(124,58,237,.2)}
.theme-toggle{margin-top:8px;border:1px dashed #c9d3e3;justify-content:center}

.main-content{margin-left:260px;min-height:100vh;padding:34px 44px;position:relative;z-index:1}
.auth-main{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px;position:relative;z-index:1}

.page-header{margin-bottom:28px}
.page-title{font-family:'Noto Serif SC',serif;font-size:34px;font-weight:900;letter-spacing:-0.02em;margin-bottom:8px}
.page-subtitle{color:var(--ink-soft);font-size:16px}

.btn{display:inline-flex;align-items:center;justify-content:center;padding:10px 18px;border-radius:10px;background:linear-gradient(135deg,#7c3aed,#9333ea);color:#fff;text-decoration:none;border:none;cursor:pointer;font-weight:700;letter-spacing:.01em;box-shadow:0 10px 20px rgba(124,58,237,.2);transition:transform .15s ease,box-shadow .2s ease}
.btn:hover{transform:translateY(-1px);text-decoration:none;box-shadow:0 14px 24px rgba(124,58,237,.3)}
.btn-primary{background:linear-gradient(135deg,#7c3aed,#9333ea)}
.btn-secondary{background:linear-gradient(135deg,#64748b,#475569)}
.btn-danger{background:linear-gradient(135deg,#b42318,#dc2626)}
.btn-block{width:100%}
.btn-sm{padding:6px 12px;border-radius:8px;font-size:13px;font-weight:600;box-shadow:none}

.filters{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:24px;flex-wrap:wrap}
.filter-form{display:flex;gap:12px}
.filter-form select{padding:10px 14px;border:1px solid #cfd7e3;border-radius:10px;background:#fff;font-size:14px;min-width:140px;cursor:pointer}
.actions{display:flex;gap:10px}

.news-list{display:flex;flex-direction:column;gap:16px}
.news-item{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:20px;transition:.2s;backdrop-filter:blur(4px)}
.news-item:hover{box-shadow:0 10px 30px rgba(15,23,42,.08);transform:translateY(-2px)}
.news-item.read{opacity:.7}
.news-meta{display:flex;align-items:center;gap:12px;margin-bottom:10px;font-size:13px;color:#6b7b93}
.news-source{background:linear-gradient(135deg,#ede9fe,#f3e8ff);color:#7c3aed;padding:3px 10px;border-radius:6px;font-weight:600;font-size:12px}
.news-time{color:#94a3b8}
.news-category{background:#dcfce7;color:#166534;padding:3px 10px;border-radius:6px;font-weight:600;font-size:12px}
.news-title{font-size:18px;font-weight:700;margin-bottom:8px;line-height:1.4}
.news-title a{color:var(--ink)}
.news-title a:hover{color:#7c3aed}
.news-summary{color:#64748b;font-size:14px;line-height:1.6}
.news-tags{display:flex;gap:6px;flex-wrap:wrap;margin-top:12px}
.tag{background:#f1f5f9;color:#475569;padding:4px 10px;border-radius:20px;font-size:12px;font-weight:500}

.empty-state{text-align:center;padding:60px 20px;color:#94a3b8}
.empty-state p{margin-bottom:16px;font-size:16px}

.pagination{display:flex;align-items:center;justify-content:center;gap:16px;margin-top:28px}
.page-link{padding:10px 18px;background:#fff;border:1px solid #dbe2ea;border-radius:10px;color:#334155;font-weight:600;transition:.2s}
.page-link:hover{background:#f8fafc;text-decoration:none;border-color:#7c3aed;color:#7c3aed}
.page-info{color:#64748b;font-size:14px}

.news-detail{max-width:900px}
.back-link{display:inline-flex;align-items:center;gap:6px;color:#64748b;font-weight:600;margin-bottom:20px}
.back-link:hover{color:#7c3aed}
.detail-header-main{margin-bottom:28px;padding-bottom:24px;border-bottom:1px solid var(--line)}
.detail-title{font-family:'Noto Serif SC',serif;font-size:32px;font-weight:900;line-height:1.3;margin:12px 0 16px}
.detail-section{margin-bottom:28px}
.detail-section h2{font-size:18px;font-weight:700;margin-bottom:12px;color:#334155}
.detail-section .summary{font-size:16px;line-height:1.8;color:#475569;background:linear-gradient(135deg,#faf5ff,#f5f3ff);padding:18px;border-radius:12px;border-left:4px solid #7c3aed}
.detail-section .content{font-size:15px;line-height:1.8;color:#475569;white-space:pre-wrap}
.detail-actions{display:flex;gap:12px;margin-top:28px}

.auth-container{width:100%;display:flex;align-items:center;justify-content:center}
.auth-box{width:min(420px,100%);background:var(--surface);border:1px solid var(--line);border-radius:18px;padding:34px;backdrop-filter:blur(4px);box-shadow:0 20px 45px rgba(29,43,64,.08)}
.auth-title{font-family:'Noto Serif SC',serif;font-size:26px;font-weight:900;margin-bottom:24px;text-align:center}
.auth-form{display:flex;flex-direction:column;gap:16px}
.form-group label{display:block;font-size:14px;font-weight:600;color:#334155;margin-bottom:6px}
.form-group input{width:100%;padding:12px 14px;border:1px solid #cfd7e3;border-radius:10px;font-size:15px;outline:none;transition:border-color .2s,box-shadow .2s}
.form-group input:focus{border-color:#7c3aed;box-shadow:0 0 0 3px rgba(124,58,237,.15)}
.auth-hint{margin-top:16px;text-align:center;color:#94a3b8;font-size:13px}
.error-message{background:#fef2f2;color:#b42318;padding:12px;border-radius:10px;margin-bottom:16px;font-weight:500;text-align:center}

.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:16px;margin-bottom:32px}
.stat-card{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:24px;text-align:center;backdrop-filter:blur(4px)}
.stat-value{font-family:'Noto Serif SC',serif;font-size:42px;font-weight:900;color:#7c3aed}
.stat-label{color:#64748b;font-size:14px;margin-top:4px}

.section{margin-bottom:32px}
.section-title{font-size:20px;font-weight:700;margin-bottom:16px;color:#334155}
.source-stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:12px}
.source-stat{background:#fff;border:1px solid var(--line);border-radius:10px;padding:14px 18px;display:flex;justify-content:space-between;align-items:center}
.source-name{font-weight:600;color:#334155}
.source-count{color:#7c3aed;font-weight:700}

.news-table{background:var(--surface);border:1px solid var(--line);border-radius:14px;overflow:hidden}
.news-table table{width:100%;border-collapse:collapse}
.news-table th,.news-table td{padding:14px 16px;text-align:left;border-bottom:1px solid var(--line)}
.news-table th{background:#f8fafc;font-weight:700;color:#475569;font-size:13px;text-transform:uppercase;letter-spacing:.03em}
.news-table td{font-size:14px}
.news-table tr:last-child td{border-bottom:none}
.news-table tr:hover td{background:#fafbfc}
.title-cell a{color:#1e293b;font-weight:500}
.title-cell a:hover{color:#7c3aed}
.actions-cell{display:flex;gap:8px}
.empty-cell{text-align:center;color:#94a3b8;padding:40px!important}

.badge{display:inline-block;padding:4px 10px;border-radius:20px;font-size:12px;font-weight:600}
.badge-success{background:#dcfce7;color:#166534}
.badge-warning{background:#fef3c7;color:#92400e}

.header-actions{display:flex;gap:12px;margin-top:12px}

.footer{margin-top:36px;padding-top:20px;border-top:1px solid #d7dfea;color:#94a3b8;font-size:13px}

body.dark-mode{--bg:#0f1117;--surface:rgba(25,30,40,.88);--line:#2a3140;--ink:#e6ecf7;--ink-soft:#99a8c0}
body.dark-mode .sidebar{background:linear-gradient(180deg,rgba(23,27,36,.95),rgba(20,24,33,.92));border-right:1px solid #2a3140}
body.dark-mode .logo-text{color:#eef2ff}
body.dark-mode .sidebar-subtitle{color:#7b8da8}
body.dark-mode .nav-item,body.dark-mode .theme-toggle{color:#c3cee1}
body.dark-mode .nav-item:hover,body.dark-mode .theme-toggle:hover{background:rgba(167,139,250,.15)}
body.dark-mode .nav-item.active{background:linear-gradient(135deg,rgba(124,58,237,.25),rgba(167,139,250,.18));color:#e9d5ff;box-shadow:inset 0 0 0 1px rgba(167,139,250,.35)}
body.dark-mode .news-item,body.dark-mode .stat-card,body.dark-mode .news-table,body.dark-mode .source-stat,body.dark-mode .auth-box{background:rgba(24,29,39,.88);border-color:#313a4a}
body.dark-mode .news-title a{color:#e6ecf7}
body.dark-mode .news-title a:hover{color:#c4b5fd}
body.dark-mode .news-source{background:rgba(124,58,237,.25);color:#c4b5fd}
body.dark-mode .tag{background:#2d3a4f;color:#b7c4db}
body.dark-mode .filter-form select,body.dark-mode .form-group input{background:#1a2332;border-color:#34445d;color:#e6ecf7}
body.dark-mode .stat-value{color:#c4b5fd}
body.dark-mode .source-count{color:#c4b5fd}
body.dark-mode .detail-section .summary{background:rgba(124,58,237,.1);border-color:#7c3aed;color:#d4d4d8}
body.dark-mode .news-table th{background:#1a2230;color:#b7c4db}
body.dark-mode .news-table tr:hover td{background:rgba(124,58,237,.08)}
body.dark-mode .title-cell a{color:#e6ecf7}

@media (max-width:980px){
  .sidebar{position:static;width:100%;height:auto}
  .main-content{margin-left:0;padding:20px}
  .page-title{font-size:28px}
  .filters{flex-direction:column;align-items:stretch}
  .filter-form{flex-direction:column}
  .stats-grid{grid-template-columns:1fr}
  .news-table{overflow-x:auto}
}