:root{--primary:#1e293b;--accent:#0ea5e9;--text-main:#334155;--text-light:#64748b;--bg-form:#ffffff}body,html{margin:0;padding:0;height:100%;font-family:'Segoe UI',system-ui,-apple-system,sans-serif}.layout{display:flex;height:100vh}.brand-panel{flex:1;background:linear-gradient(135deg,#0f172a 0%,#1e293b 100%);display:flex;flex-direction:column;justify-content:center;align-items:center;color:#fff;padding:40px;position:relative;overflow:hidden}.brand-panel::before{content:'';position:absolute;top:-50%;left:-50%;width:200%;height:200%;background:radial-gradient(circle,rgba(255,255,255,0.03) 10%,transparent 20%);background-size:30px 30px;transform:rotate(15deg)}.brand-panel h1{font-size:2.2rem;margin-bottom:15px;z-index:1;font-weight:400;letter-spacing:.5px}.brand-panel p{font-size:1rem;color:#cbd5e1;z-index:1;text-align:center;max-width:420px;line-height:1.6}.form-panel{width:480px;background:var(--bg-form);display:flex;flex-direction:column;justify-content:center;padding:60px;box-shadow:-5px 0 25px rgba(0,0,0,0.03);z-index:2}.form-header{margin-bottom:35px}.form-header svg{width:42px;height:42px;fill:var(--accent);margin-bottom:12px}.form-header h2{margin:0 0 8px 0;color:var(--text-main);font-size:1.4rem;font-weight:600}.form-header span{color:var(--text-light);font-size:.9rem}.form-group{margin-bottom:20px}.form-group label{display:block;font-size:.85rem;color:var(--text-main);margin-bottom:8px;font-weight:600}.form-control{width:100%;padding:12px 14px;border:1px solid #cbd5e1;border-radius:4px;font-size:.95rem;color:var(--text-main);box-sizing:border-box;transition:all .2s}.form-control:focus{outline:0;border-color:var(--accent);box-shadow:0 0 0 3px rgba(14,165,233,0.1)}.options{display:flex;justify-content:space-between;font-size:.85rem;margin-bottom:30px}.options a{color:var(--accent);text-decoration:none;font-weight:500;cursor:pointer}.options a:hover{text-decoration:underline}.btn-submit{width:100%;padding:14px;background:var(--primary);color:#fff;border:0;border-radius:4px;font-size:.95rem;font-weight:600;cursor:pointer;transition:background .2s}.btn-submit:hover{background:#0f172a}.divider{display:flex;align-items:center;margin:30px 0;color:var(--text-light);font-size:.85rem}.divider::before,.divider::after{content:'';flex:1;border-bottom:1px solid #e2e8f0}.divider span{padding:0 10px}.alt-login button{width:100%;background:#fff;border:1px solid #cbd5e1;padding:12px;border-radius:4px;cursor:pointer;font-weight:500;color:var(--text-main);transition:all .2s;display:flex;justify-content:center;align-items:center;gap:8px}.alt-login button:hover{background:#f8fafc}.alt-login button:disabled{background:#f1f5f9;color:#94a3b8;cursor:not-allowed;border-color:#e2e8f0}.footer{margin-top:auto;font-size:.75rem;color:var(--text-light);text-align:center;line-height:1.5}.modal-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:rgba(15,23,42,0.6);display:flex;justify-content:center;align-items:center;z-index:100;opacity:0;pointer-events:none;transition:opacity .2s}.modal-overlay.active{opacity:1;pointer-events:auto}.modal-box{background:#fff;padding:30px;border-radius:6px;width:350px;box-shadow:0 10px 25px rgba(0,0,0,0.1);transform:translateY(20px);transition:transform .2s}.modal-overlay.active .modal-box{transform:translateY(0)}.modal-box h3{margin:0 0 15px 0;color:var(--primary);font-size:1.2rem}.modal-box p{font-size:.9rem;color:var(--text-main);line-height:1.5;margin-bottom:20px}.modal-box button{background:var(--accent);color:#fff;border:0;padding:10px 15px;border-radius:4px;cursor:pointer;font-weight:500;width:100%}@media (max-width:900px){.layout{flex-direction:column}.brand-panel{display:none}.form-panel{width:100%;padding:40px}}