:root{--bg: #0f172a;--panel: #1e293b;--panel-2: #273549;--border: #334155;--text: #e2e8f0;--muted: #94a3b8;--primary: #6366f1;--primary-hover: #4f46e5;--green: #22c55e;--red: #ef4444;--amber: #f59e0b}*{box-sizing:border-box}body{margin:0;font-family:Segoe UI,system-ui,-apple-system,sans-serif;background:var(--bg);color:var(--text);font-size:14px}a{color:var(--primary);text-decoration:none}h1,h2,h3{margin:0 0 12px}.login-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center}.login-card{background:var(--panel);border:1px solid var(--border);border-radius:14px;padding:32px;width:360px}.login-card h1{text-align:center}.login-sub{text-align:center;color:var(--muted);margin-bottom:20px}.app{display:flex;min-height:100vh}.sidebar{width:230px;background:var(--panel);border-right:1px solid var(--border);padding:20px 14px;display:flex;flex-direction:column}.brand{font-size:18px;font-weight:700;margin-bottom:24px;padding:0 8px}.brand span{color:var(--primary)}.nav 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