:root {
            --verde-medico: #2d6a4f;      
            --verde-paciente: #52b788;    
            --verde-claro: #b7e4c7;       
            --verde-hover: #40916c;       
            --verde-activo: #1b4332;      
            --blanco: #ffffff;
            --gris-claro: #f8f9fa;
            --gris: #6c757d;
            --error: #dc3545;
        }
        
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        
        body {
            background: linear-gradient(135deg, var(--verde-claro) 0%, #d8f3dc 100%);
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 20px;
        }
        
        .contenedor-login {
            width: 100%;
            max-width: 450px;
            background-color: var(--blanco);
            border-radius: 20px;
            overflow: hidden;
            box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
            animation: fadeIn 0.5s ease-out;
        }
        
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }
        
        .cabecera-login {
            background: linear-gradient(to right, var(--verde-medico), var(--verde-paciente));
            color: var(--blanco);
            padding: 30px 20px;
            text-align: center;
        }
        
        .logo {
            font-size: 2.5rem;
            margin-bottom: 10px;
        }
        
        .cabecera-login h1 {
            font-size: 1.8rem;
            font-weight: 600;
            margin-bottom: 5px;
        }
        
        .cabecera-login p {
            opacity: 0.9;
            font-size: 0.95rem;
        }
        
        .selector-tipo {
            display: flex;
            background-color: var(--gris-claro);
            margin: 0 20px;
            border-radius: 12px;
            overflow: hidden;
            position: relative;
            top: -15px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
        }
        
        .tipo-option {
            flex: 1;
            padding: 18px 10px;
            text-align: center;
            cursor: pointer;
            transition: all 0.3s ease;
            font-weight: 600;
            color: var(--gris);
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 8px;
        }
        
        .tipo-option i {
            font-size: 1.4rem;
        }
        
        .tipo-option.medico {
            border-bottom: 4px solid transparent;
        }
        
        .tipo-option.paciente {
            border-bottom: 4px solid transparent;
        }
        
        .tipo-option.active {
            color: var(--blanco);
            border-bottom: 4px solid var(--blanco);
        }
        
        .tipo-option.medico.active {
            background-color: var(--verde-medico);
        }
        
        .tipo-option.paciente.active {
            background-color: var(--verde-paciente);
        }
        
        .login-form {
            padding: 30px 30px 40px;
        }
        
        .form-group {
            margin-bottom: 25px;
            position: relative;
        }
        
        .form-group label {
            display: flex;
            align-items: center;
            margin-bottom: 8px;
            color: var(--verde-activo);
            font-weight: 600;
            font-size: 0.95rem;
        }
        
        .form-group label i {
            margin-right: 10px;
            font-size: 1.1rem;
        }
        
        .form-input {
            width: 100%;
            padding: 15px 15px 15px 45px;
            border: 2px solid #e9ecef;
            border-radius: 10px;
            font-size: 1rem;
            transition: all 0.3s;
            background-color: var(--gris-claro);
        }
        
        .form-input:focus {
            outline: none;
            border-color: var(--verde-hover);
            background-color: var(--blanco);
            box-shadow: 0 0 0 3px rgba(76, 175, 80, 0.1);
        }
        
        .input-icon {
            position: absolute;
            left: 15px;
            top: 42px;
            color: var(--gris);
            font-size: 1.2rem;
        }
        
        .btn-login {
            width: 100%;
            padding: 16px;
            border: none;
            border-radius: 10px;
            font-size: 1.1rem;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s;
            margin-top: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
        }
        
        .btn-login i {
            font-size: 1.2rem;
        }
        
        .mensaje-error {
            background-color: rgba(220, 53, 69, 0.1);
            color: var(--error);
            padding: 12px 15px;
            border-radius: 10px;
            margin-bottom: 20px;
            border-left: 4px solid var(--error);
            display: flex;
            align-items: center;
            gap: 10px;
            animation: shake 0.5s;
        }
        @keyframes shake {
            0%, 100% { transform: translateX(0); }
            25% { transform: translateX(-5px); }
            75% { transform: translateX(5px); }
        }
        
        .info-footer {
            text-align: center;
            margin-top: 25px;
            color: var(--gris);
            font-size: 0.9rem;
            line-height: 1.5;
        }
        
        .hidden {
            display: none;
        }
        
        .tipo-input {
            display: none;
        }
        
        @media (max-width: 480px) {
            .contenedor-login {
                max-width: 100%;
            }
            
            .login-form {
                padding: 25px 20px 30px;
            }
            
            .selector-tipo {
                margin: 0 15px;
                top: -12px;
            }
        }