:root{--bg:#0a0a0f;--bg-card:#12121a;--bg-input:#1a1a2e;--border:#2a2a3e;--text:#e4e4ef;--text-muted:#8888a0;--primary:#3b82f6;--primary-hover:#2563eb;--danger:#ef4444;--success:#22c55e;--radius:8px}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--text);min-height:100vh}.page-center{display:flex;align-items:center;justify-content:center;min-height:100vh;padding:20px}.card{background:var(--bg-card);border:1px solid var(--border);border-radius:12px;padding:32px;width:100%;max-width:420px}.card h1{font-size:24px;margin-bottom:8px}.card p.subtitle{color:var(--text-muted);margin-bottom:24px;font-size:14px}.form-group{margin-bottom:16px}.form-group label{display:block;font-size:13px;font-weight:500;margin-bottom:6px;color:var(--text-muted)}.form-group input{width:100%;padding:10px 14px;background:var(--bg-input);border:1px solid var(--border);border-radius:var(--radius);color:var(--text);font-size:14px;outline:none;transition:border-color .2s}.form-group input:focus{border-color:var(--primary)}.btn{width:100%;padding:12px;border:none;border-radius:var(--radius);font-size:14px;font-weight:600;cursor:pointer;transition:background .2s}.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover{background:var(--primary-hover)}.btn-primary:disabled{opacity:.5;cursor:not-allowed}.btn-danger{background:var(--danger);color:#fff}.link{color:var(--primary);text-decoration:none;font-size:13px}.link:hover{text-decoration:underline}.error-msg{background:rgba(239,68,68,.1);border:1px solid rgba(239,68,68,.3);color:var(--danger);border-radius:var(--radius)}.error-msg,.success-msg{padding:10px 14px;font-size:13px;margin-bottom:16px}.success-msg{background:rgba(34,197,94,.1);border:1px solid rgba(34,197,94,.3);color:var(--success);border-radius:var(--radius)}.divider{display:flex;align-items:center;margin:20px 0;color:var(--text-muted);font-size:12px}.divider:after,.divider:before{content:"";flex:1 1;border-bottom:1px solid var(--border)}.divider span{padding:0 12px}.dashboard{min-height:100vh;display:flex}.sidebar{width:240px;background:var(--bg-card);border-right:1px solid var(--border);padding:20px 0;display:flex;flex-direction:column}.sidebar-header{padding:0 20px 20px;border-bottom:1px solid var(--border);font-weight:700;font-size:18px}.sidebar-nav{flex:1 1;padding:12px}.sidebar-nav a{display:block;padding:10px 12px;color:var(--text-muted);text-decoration:none;border-radius:var(--radius);font-size:14px;margin-bottom:2px;transition:all .15s}.sidebar-nav a.active,.sidebar-nav a:hover{background:var(--bg-input);color:var(--text)}.main-content{flex:1 1;padding:32px}.main-content h2{font-size:22px;margin-bottom:20px}.topbar{display:flex;justify-content:space-between;align-items:center;margin-bottom:32px;padding-bottom:20px;border-bottom:1px solid var(--border)}.topbar .user-info{color:var(--text-muted);font-size:14px}