*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{--bg:#f5f7fa;--card:#fff;--text:#1a1a2e;--muted:#6b7280;--accent:#2563eb;--accent-hover:#1d4ed8;--border:#e5e7eb;--radius:12px;--shadow:0 1px 3px rgba(0,0,0,.08),0 1px 2px rgba(0,0,0,.06)}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,"Noto Sans SC",sans-serif;background:var(--bg);color:var(--text);line-height:1.7;min-height:100vh}
a{color:var(--accent);text-decoration:none}
a:hover{color:var(--accent-hover)}
.container{max-width:1100px;margin:0 auto;padding:0 20px}

/* Header */
.site-header{background:linear-gradient(135deg,#1a1a2e 0%,#16213e 50%,#0f3460 100%);color:#fff;padding:40px 0 30px;text-align:center}
.site-header .logo{font-size:2rem;font-weight:800;letter-spacing:-.5px}
.site-header .logo a{color:#fff}
.site-header .subtitle{color:#94a3b8;margin:6px 0 20px;font-size:.95rem}
.main-nav{display:flex;justify-content:center;gap:6px;flex-wrap:wrap}
.main-nav a{color:#cbd5e1;padding:8px 16px;border-radius:8px;font-size:.9rem;font-weight:500;transition:all .2s}
.main-nav a:hover,.main-nav a.active{background:rgba(255,255,255,.1);color:#fff}

/* Hero */
.hero{text-align:center;padding:50px 0 30px}
.hero h2{font-size:1.8rem;margin-bottom:12px;background:linear-gradient(135deg,#2563eb,#7c3aed);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero p{color:var(--muted);font-size:1.05rem;max-width:600px;margin:0 auto}

.page-intro{padding:36px 0 20px}
.page-intro h2{font-size:1.5rem}

/* Post Grid */
.post-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:24px;padding:20px 0 40px}
.post-card{background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden;transition:transform .2s,box-shadow .2s}
.post-card:hover{transform:translateY(-2px);box-shadow:0 4px 12px rgba(0,0,0,.1)}
.post-card-body{padding:24px}
.post-category{display:inline-block;background:#eef2ff;color:var(--accent);font-size:.78rem;font-weight:600;padding:3px 10px;border-radius:20px;margin-bottom:12px}
.post-card h3{font-size:1.15rem;margin-bottom:8px;line-height:1.4}
.post-card h3 a{color:var(--text)}.post-card h3 a:hover{color:var(--accent)}
.post-excerpt{color:var(--muted);font-size:.9rem;line-height:1.6;margin-bottom:12px}
.post-date{color:#9ca3af;font-size:.8rem}

/* Single Post */
.post-full{background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);padding:40px;margin:30px 0}
.post-header{margin-bottom:30px}
.post-header h1{font-size:2rem;line-height:1.3;margin:12px 0 8px}
.post-meta{color:#9ca3af;font-size:.9rem}
.post-cover{margin-bottom:30px;border-radius:8px;overflow:hidden}
.post-cover img{width:100%;height:auto;display:block}
.post-content{font-size:1.05rem;line-height:1.85}
.post-content h2{font-size:1.5rem;margin:32px 0 16px;padding-bottom:8px;border-bottom:2px solid var(--border)}
.post-content h3{font-size:1.2rem;margin:24px 0 12px}
.post-content p{margin-bottom:16px}
.post-content ul,.post-content ol{padding-left:24px;margin-bottom:16px}
.post-content li{margin-bottom:6px}
.post-content pre{background:#1e293b;color:#e2e8f0;padding:16px 20px;border-radius:8px;overflow-x:auto;font-size:.9rem;line-height:1.5;margin-bottom:20px;font-family:"Fira Code","Cascadia Code",monospace}
.post-content code{font-family:"Fira Code","Cascadia Code",monospace;font-size:.9em}
.post-content p code{background:#f1f5f9;padding:2px 6px;border-radius:4px;font-size:.85em}
.post-content blockquote{border-left:4px solid var(--accent);padding:12px 20px;margin:20px 0;background:#f8fafc;border-radius:0 8px 8px 0;color:var(--muted)}
.post-content img{max-width:100%;border-radius:8px;margin:20px 0}
.post-content a{text-decoration:underline}
.post-nav{display:flex;justify-content:space-between;gap:20px;padding:20px 0 40px;flex-wrap:wrap}
.post-nav a{max-width:45%;padding:16px 20px;background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);font-size:.9rem;transition:transform .2s}
.post-nav a:hover{transform:translateY(-1px)}
.post-nav .prev{text-align:left}
.post-nav .next{text-align:right;margin-left:auto}

/* Footer */
.site-footer{text-align:center;padding:30px 0;color:var(--muted);font-size:.85rem;border-top:1px solid var(--border);margin-top:20px}
.site-footer a{color:var(--muted)}.site-footer a:hover{color:var(--accent)}

/* Pagination */
.pagination{display:flex;justify-content:center;align-items:center;gap:16px;padding:20px 0 40px;font-size:.9rem;color:var(--muted)}
.pagination a{background:var(--card);padding:8px 18px;border-radius:8px;box-shadow:var(--shadow);font-weight:500;font-size:.85rem}

/* Admin */
.admin-header{background:#1a1a2e;color:#fff;padding:16px 0}
.admin-header .container{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:10px}
.admin-header h1{font-size:1.1rem}
.admin-header h1 a{color:#fff}
.admin-header nav{display:flex;gap:4px;flex-wrap:wrap}
.admin-header nav a{color:#cbd5e1;padding:6px 14px;border-radius:6px;font-size:.85rem;transition:all .2s}
.admin-header nav a:hover{background:rgba(255,255,255,.1);color:#fff}
.admin-main{padding:30px 0}
.admin-main h2{margin-bottom:20px}
.admin-toolbar{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px;flex-wrap:wrap;gap:12px}

/* Stats */
.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:20px;margin-bottom:40px}
.stat-card{background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);padding:28px 20px;text-align:center}
.stat-number{display:block;font-size:2.2rem;font-weight:800;color:var(--accent)}
.stat-label{color:var(--muted);font-size:.9rem;margin-top:4px}

/* Tables */
.admin-table{width:100%;border-collapse:collapse;background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden;margin-bottom:30px}
.admin-table th{background:#f8fafc;text-align:left;padding:12px 16px;font-size:.85rem;font-weight:600;color:var(--muted);border-bottom:2px solid var(--border)}
.admin-table td{padding:12px 16px;border-bottom:1px solid var(--border);font-size:.9rem}
.admin-table tr:last-child td{border-bottom:none}
.action-cell{white-space:nowrap}
.action-cell .btn-sm{margin-right:4px}

/* Forms */
.admin-form{background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);padding:30px;max-width:900px}
.form-group{margin-bottom:20px}
.form-group label{display:block;font-weight:600;margin-bottom:6px;font-size:.9rem}
.form-group input[type="text"],.form-group input[type="password"],.form-group select,.form-group textarea{width:100%;padding:10px 14px;border:1px solid var(--border);border-radius:8px;font-size:.95rem;font-family:inherit;transition:border-color .2s;background:#fff}
.form-group input:focus,.form-group select:focus,.form-group textarea:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px rgba(37,99,235,.1)}
.form-group textarea{resize:vertical;min-height:100px}
.form-group input[type="checkbox"]{margin-right:8px;transform:scale(1.1)}
.code-editor{font-family:"Fira Code","Cascadia Code",monospace;font-size:.9rem;line-height:1.5}
.form-actions{display:flex;gap:12px;padding-top:10px}

/* Buttons */
.btn{display:inline-block;padding:10px 22px;border:none;border-radius:8px;font-size:.9rem;font-weight:600;cursor:pointer;text-decoration:none;transition:all .2s;background:#e5e7eb;color:var(--text)}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:var(--accent-hover);color:#fff}
.btn-danger{background:#ef4444;color:#fff!important}
.btn-danger:hover{background:#dc2626}
.btn-sm{display:inline-block;padding:5px 12px;border-radius:6px;font-size:.82rem;font-weight:500;background:#eef2ff;color:var(--accent)}
.btn-sm:hover{background:#dbe5ff}

/* Login */
.login-page{display:flex;justify-content:center;align-items:center;min-height:100vh;background:linear-gradient(135deg,#1a1a2e,#0f3460)}
.login-box{background:var(--card);border-radius:var(--radius);box-shadow:0 20px 60px rgba(0,0,0,.3);padding:40px;width:380px;max-width:90%}
.login-box h1{text-align:center;margin-bottom:24px;font-size:1.5rem}
.login-hint{text-align:center;margin-top:16px;color:var(--muted);font-size:.82rem}
.login-box .btn{width:100%}

/* Utilities */
.error-msg{background:#fef2f2;color:#dc2626;padding:12px 18px;border-radius:8px;margin-bottom:16px;font-size:.9rem;border:1px solid #fecaca}
.empty-state{text-align:center;padding:60px 20px;color:var(--muted);font-size:1.1rem}

/* Responsive */
@media(max-width:768px){
  .site-header{padding:28px 0 20px}
  .site-header .logo{font-size:1.5rem}
  .post-grid{grid-template-columns:1fr}
  .post-full{padding:24px}
  .post-full h1{font-size:1.5rem}
  .admin-header .container{flex-direction:column;text-align:center}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .post-nav{flex-direction:column}
  .post-nav a{max-width:100%}
  .post-nav .next{margin-left:0}
}