:root {
            --azul-oscuro: #003D6A;
            --azul-claro: #4CA3CC;
            --blanco: #ffffff;
            --gris-fondo: #f4f7f6;
        }

        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            background-color: var(--gris-fondo);
            display: flex;
            justify-content: center;
            align-items: center;
            height: 100vh;
            margin: 0;
        }

        .login-container {
            background-color: var(--blanco);
            padding: 40px;
            border-radius: 15px;
            box-shadow: 0 10px 25px rgba(0,0,0,0.1);
            width: 100%;
            max-width: 400px;
            text-align: center;
        }

        .login-container img {
            max-width: 150px;
            margin-bottom: 20px;
        }

        .login-container h2 {
            color: var(--azul-oscuro);
            margin-bottom: 30px;
        }

        .form-group {
            margin-bottom: 20px;
            text-align: left;
        }

        .form-group label {
            display: block;
            margin-bottom: 5px;
            color: #666;
            font-size: 14px;
        }

        .form-group input {
            width: 100%;
            padding: 12px;
            border: 1px solid #ddd;
            border-radius: 8px;
            box-sizing: border-box; /* Importante para el ancho */
            font-size: 16px;
        }

        .form-group input:focus {
            outline: none;
            border-color: var(--azul-claro);
        }

        .btn-login {
            background-color: var(--azul-oscuro);
            color: var(--blanco);
            border: none;
            padding: 15px;
            width: 100%;
            border-radius: 8px;
            font-size: 16px;
            font-weight: bold;
            cursor: pointer;
            transition: background 0.3s;
        }

        .btn-login:hover {
            background-color: var(--azul-claro);
        }

        .footer-links {
            margin-top: 20px;
            font-size: 13px;
        }

        .footer-links a {
            color: var(--azul-claro);
            text-decoration: none;
        }

        .error-msg {
            background-color: #ffebee;
            color: #c62828;
            padding: 10px;
            border-radius: 5px;
            margin-bottom: 20px;
            font-size: 14px;
        }