*{margin:0;padding:0;box-sizing:border-box}body{font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif;background:#f5f7fa;min-height:100vh;display:flex;align-items:center;justify-content:center}.login-container{background:#fff;padding:2rem;border-radius:8px;box-shadow:0 10px 25px #0003;width:100%;min-width:360px}h1{text-align:center;color:#333;margin-bottom:1.5rem}.form-group{margin-bottom:1rem}label{display:block;margin-bottom:.5rem;color:#555;font-weight:500}input{width:100%;padding:.75rem;border:2px solid #e1e1e1;border-radius:4px;font-size:1rem;transition:border-color .3s}input:focus{outline:none;border-color:#4a6fa5}button{width:100%;padding:.75rem;background:#4a6fa5;color:#fff;border:none;border-radius:4px;font-size:1rem;font-weight:600;cursor:pointer;transition:background .3s}button:hover{background:#4a6fa5}button:disabled{background:#ccc;cursor:not-allowed}.error-message{background:#e0e5eb;color:#c33;padding:.75rem;border-radius:4px;margin-bottom:1rem;display:none}.error-message.show{display:block}.success-message{background:#d4edda;color:#155724;padding:.75rem;border-radius:4px;margin-bottom:1rem;display:none;border:var(--border-base)}.success-message.show{display:block}.forgot-password{text-align:center;margin:1rem 0}.forgot-password a{color:#667eea;text-decoration:none;font-size:.9rem;transition:color .3s}.forgot-password a:hover{color:#5568d3;text-decoration:underline}