:root {
    --primary-color: #8cbb40; /* Verde característico de TattoTapatio */
    --secondary-color: #2c3e50;
    --accent-color: #3498db;
    --text-color: #333;
    --light-gray: #f5f5f5;
    --medium-gray: #bdc3c7;
    --error-color: #e74c3c;
    --success-color: #2ecc71;
}

body {
    margin: 0;
    padding: 0;
    font-family: montserrat; 
    background: url('fondo.jpeg') no-repeat center center fixed;
    background-size: cover;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    color: var(--text-color);
}

/* Contenedor del formulario */
.formulario {
    width: 90%;
    max-width: 420px;
    background: rgba(255, 255, 255, 0.95);
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    padding: 40px 0;
    backdrop-filter: blur(8px);
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.formulario:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.4);
}

/* Título */
.formulario h1 {
    text-align: center;
    padding: 0 0 20px 0;
    margin: 0 0 30px 0;
    color: var(--secondary-color);
    font-weight: 700;
    font-size: 28px;
    position: relative;
    letter-spacing: 1px;
}

.formulario h1::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: var(--primary-color);
    border-radius: 2px;
}

/* Campos del formulario */
.formulario form {
    padding: 0 40px;
    box-sizing: border-box;
}

.username {
    position: relative;
    margin-bottom: 35px;
}

.username input {
    width: 100%;
    padding: 12px 5px;
    height: 50px;
    font-size: 16px;
    border: none;
    border-bottom: 2px solid var(--medium-gray);
    background: transparent;
    outline: none;
    transition: all 0.3s ease;
    color: var(--secondary-color);
}

.username label {
    position: absolute;
    top: 50%;
    left: 5px;
    color: var(--medium-gray);
    transform: translateY(-50%);
    font-size: 16px;
    pointer-events: none;
    transition: all 0.3s ease;
    font-weight: 500;
}

.username input:focus,
.username input:valid {
    border-bottom-color: var(--primary-color);
}

.username input:focus ~ label,
.username input:valid ~ label {
    top: -15px;
    font-size: 14px;
    color: var(--primary-color);
    font-weight: 600;
}

.username .underline {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: width 0.4s ease;
}

.username input:focus ~ .underline,
.username input:valid ~ .underline {
    width: 100%;
}

/* Opciones adicionales */
.recordar {
    
    text-align: center;
    margin: -5px 0 25px 0;
}

.recordar a {
    color: var(--accent-color);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.3s ease;
}

.recordar a:hover {
    color: var(--secondary-color);
    text-decoration: underline;
}

/* Botón de submit */
input[type="submit"] {
    width: 100%;
    height: 50px;
    border: none;
    background: linear-gradient(135deg, var(--primary-color), #6a9a2f);
    border-radius: 25px;
    font-size: 16px;
    color: white;
    cursor: pointer;
    outline: none;
    transition: all 0.3s ease;
    font-weight: 600;
    letter-spacing: 1px;
    text-transform: uppercase;
    margin: 10px 0 20px 0;
    box-shadow: 0 4px 15px rgba(140, 187, 64, 0.3);
}

input[type="submit"]:hover {
    background: linear-gradient(135deg, #7aa336, #5b8327);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(140, 187, 64, 0.4);
}

input[type="submit"]:active {
    transform: translateY(0);
}

/* Enlace de registro */
.registrarse {
    margin: 20px 0 0 0;
    text-align: center;
    font-size: 15px;
    color: var(--secondary-color);
}

.registrarse a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
}

.registrarse a:hover {
    color: #6a9a2f;
    text-decoration: underline;
}

/* Mensajes de respuesta - Asegúrate que esté al final del CSS */
#respuesta {
    padding: 15px 20px;
    margin: 20px 40px 0 40px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    text-align: center;
    display: none; /* Inicialmente oculto */
    opacity: 0;
    transition: opacity 0.3s ease;
}

#respuesta.mostrar {
    display: block;
    opacity: 1;
}

#respuesta.error {
    background-color: rgba(231, 76, 60, 0.2);
    color: #e74c3c;
    border: 1px solid rgba(231, 76, 60, 0.4);
}

#respuesta.success {
    background-color: rgba(46, 204, 113, 0.2);
    color: #2ecc71;
    border: 1px solid rgba(46, 204, 113, 0.4);
}

#respuesta.info {
    background-color: rgba(52, 152, 219, 0.2);
    color: #3498db;
    border: 1px solid rgba(52, 152, 219, 0.4);
}

/* Responsive */
@media (max-width: 480px) {
    .formulario {
        width: 95%;
        padding: 30px 0;
    }
    
    .formulario form {
        padding: 0 25px;
    }
    
    .formulario h1 {
        font-size: 24px;
    }
    
    input[type="submit"] {
        height: 45px;
        font-size: 15px;
    }
    
    .username input {
        height: 45px;
        font-size: 15px;
    }
}