:root{--bg:#f5f7fa;--bg-card:#fff;--bg-input:#f0f2f5;--border:#d8dde6;--text:#32373c;--text-muted:#6b7280;--primary:#002a80;--primary-hover:#001f5c;--primary-light:rgba(0,42,128,.08);--danger:#dc2626;--success:#16a34a;--radius:8px;--shadow-sm:0 1px 3px rgba(0,0,0,.06);--shadow-md:0 4px 12px rgba(0,0,0,.08)}*{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;background:linear-gradient(135deg,#001040,#002a80 50%,#0050c8)}.card{background:var(--bg-card);border:1px solid var(--border);border-radius:12px;padding:32px;width:100%;max-width:420px;box-shadow:var(--shadow-md)}.card h1{font-size:24px;margin-bottom:8px;color:var(--text)}.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:600;margin-bottom:6px;color:var(--text-muted)}.form-group input,.form-group select{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,.form-group select:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(0,42,128,.1)}.form-group textarea{font-family:inherit}.btn{width:100%;padding:12px;border:none;border-radius:var(--radius);font-size:14px;font-weight:600;cursor:pointer;transition:all .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}.btn-danger:hover{background:#b91c1c}.link{color:var(--primary);text-decoration:none;font-size:13px}.link:hover{text-decoration:underline}.error-msg{background:#fef2f2;border:1px solid #fecaca;color:var(--danger);border-radius:var(--radius)}.error-msg,.success-msg{padding:10px 14px;font-size:13px;margin-bottom:16px}.success-msg{background:#f0fdf4;border:1px solid #bbf7d0;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,.sidebar{min-height:100vh;display:flex}.sidebar{width:250px;background:linear-gradient(180deg,#001040,#002a80);padding:20px 0;flex-direction:column}.sidebar-header{padding:0 20px 20px;border-bottom:1px solid hsla(0,0%,100%,.12);font-weight:700;font-size:18px;color:#fff}.sidebar-nav{flex:1 1;padding:12px}.sidebar-nav a{display:block;padding:10px 14px;color:hsla(0,0%,100%,.65);text-decoration:none;border-radius:var(--radius);font-size:14px;font-weight:500;margin-bottom:2px;transition:all .15s}.sidebar-nav a:hover{background:hsla(0,0%,100%,.1);color:#fff}.sidebar-nav a.active{background:hsla(0,0%,100%,.15);color:#fff;font-weight:600}.main-content{flex:1 1;padding:32px;background:var(--bg)}.main-content h2{font-size:22px;margin-bottom:20px;color:var(--text)}.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}table{background:var(--bg-card);border-radius:12px;box-shadow:var(--shadow-sm);overflow:hidden}table th{background:var(--bg-input);font-weight:600}table td,table th{border-bottom:1px solid var(--border)}table tr:last-child td{border-bottom:none}.main-content .card{max-width:none;box-shadow:var(--shadow-sm)}@media (max-width:768px){.dashboard{flex-direction:column}.sidebar{width:100%;min-height:auto;flex-direction:row;align-items:center;padding:10px}.sidebar-header{padding:0 12px;border-bottom:none;border-right:1px solid hsla(0,0%,100%,.12);font-size:16px}.sidebar-nav{display:flex;gap:4px;padding:4px;overflow-x:auto}.sidebar-nav a{white-space:nowrap;font-size:13px;padding:8px 12px}.main-content{padding:16px}}