/* Importar Fuente de Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Roboto:wght@400;500;700&display=swap');

/* Variables CSS para una fácil personalización */
:root {
    --color-fondo-formulario: #fdfdfd;
    --color-borde-formulario: #e0e0e0;
    --color-sombra: rgba(0, 0, 0, 0.1);
    --color-titulo: #ff6f00;
    --color-label: #333333;
    --color-input-fondo: #ffffff;
    --color-input-borde: #cccccc;
    --color-input-foco: #ff9800;
    --color-boton-fondo: #ff6f00;
    --color-boton-texto: #ffffff;
    --color-boton-hover: #e65100;
    --color-output: #ff6f00;
    --fuente-principal: 'Roboto', sans-serif;
}

/* General Styles */
form {
    max-width: 800px;
    margin: 40px auto;
    padding: 40px;
    background-color: var(--color-fondo-formulario);
    border: 1px solid var(--color-borde-formulario);
    border-radius: 12px;
    box-shadow: 0 10px 25px var(--color-sombra);
    font-family: var(--fuente-principal);
}

/* Title Styles */
form h2 {
    font-size: 32px;
    text-align: center;
    color: var(--color-titulo);
    margin-bottom: 30px;
    text-transform: uppercase;
    position: relative;
}

form h2 i {
    font-size: 24px;
    margin-left: 10px;
    color: var(--color-titulo);
}

/* Label and Input Styles */
form label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--color-label);
}

form input[type="range"],
form select,
form input[type="text"] {
    width: 100%;
    margin: 8px 0 20px 0;
    padding: 14px;
    font-size: 16px;
    border: 1px solid var(--color-input-borde);
    border-radius: 8px;
    background-color: var(--color-input-fondo);
    box-shadow: inset 0 2px 4px var(--color-sombra);
    transition: border-color 0.3s, box-shadow 0.3s;
}

form input[type="range"] {
    padding: 0;
    height: 40px;
}

form input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 24px;
    height: 24px;
    background: var(--color-titulo);
    cursor: pointer;
    border-radius: 50%;
    border: none;
    box-shadow: 0 2px 4px var(--color-sombra);
}

form input[type="range"]::-moz-range-thumb {
    width: 24px;
    height: 24px;
    background: var(--color-titulo);
    cursor: pointer;
    border-radius: 50%;
    border: none;
    box-shadow: 0 2px 4px var(--color-sombra);
}

form input[type="range"]:focus,
form select:focus,
form input[type="text"]:focus {
    border: 1px solid var(--color-input-foco);
    box-shadow: 0 0 8px var(--color-input-foco);
    outline: none;
}

/* Button Styles */
form button[type="submit"] {
    display: block;
    width: 100%;
    padding: 16px;
    font-size: 18px;
    font-weight: 700;
    color: var(--color-boton-texto);
    background-color: var(--color-boton-fondo);
    border: none;
    border-radius: 10px;
    cursor: pointer;
    transition: background-color 0.3s, transform 0.2s;
    margin-top: 20px;
    text-transform: uppercase;
    box-shadow: 0 4px 6px var(--color-sombra);
}

form button[type="submit"]:hover {
    background-color: var(--color-boton-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 10px var(--color-sombra);
}

/* Output Styles for Range */
form span[id$="_output"] {
    font-size: 18px;
    font-weight: 500;
    color: var(--color-output);
    margin-left: 10px;
}

/* Subtítulo con Emojis */
.calculadora-subtitulo::before {
    content: "🐾 "; /* Emoji de huellas */
    margin-right: 8px;
    font-size: 20px;
}

/* Responsividad */
@media (max-width: 600px) {
    form {
        padding: 20px;
    }

    form h2 {
        font-size: 24px;
    }

    form button[type="submit"] {
        padding: 14px;
        font-size: 16px;
    }
}