/* Custom CSS per Generatore di Battimenti */

body {
    background-color: #f8f9fa; /* Grigio molto chiaro (Bootstrap bg-light) */
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

/* Stile della card centrale */
.card {
    background-color: #ffffff;
    box-shadow: 0 4px 12px rgba(0,0,0,0.05) !important; /* Ombra molto leggera e professionale */
}

/* Pulsanti note (Radio buttons) */
.btn-outline-primary {
    color: #495057;
    border-color: #ced4da;
    background-color: #ffffff;
}

.btn-outline-primary:hover {
    color: #0d6efd;
    border-color: #0d6efd;
    background-color: #f8f9fa;
}

.btn-check:checked + .btn-outline-primary {
    color: #ffffff;
    background-color: #0d6efd;
    border-color: #0d6efd;
}

/* Pulsanti di controllo (+ e -) */
.control-btn {
    width: 50px;
    height: 50px;
    font-size: 1.2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border-width: 2px;
}

/* Slider (Input Range) - Stile pulito */
input[type=range] {
    -webkit-appearance: none;
    width: 100%;
    background: transparent;
}

input[type=range]::-webkit-slider-thumb {
    -webkit-appearance: none;
    height: 24px;
    width: 24px;
    border-radius: 50%;
    background: #0d6efd;
    cursor: pointer;
    margin-top: -10px; /* Centrare il thumb sulla traccia */
    box-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

input[type=range]::-webkit-slider-runnable-track {
    width: 100%;
    height: 6px;
    cursor: pointer;
    background: #e9ecef;
    border-radius: 3px;
}

input[type=range]:disabled::-webkit-slider-thumb {
    background: #adb5bd;
    cursor: not-allowed;
}

input[type=range]:disabled::-webkit-slider-runnable-track {
    background: #e9ecef;
    cursor: not-allowed;
}

input[type=range]::-moz-range-thumb {
    height: 24px;
    width: 24px;
    border-radius: 50%;
    background: #0d6efd;
    cursor: pointer;
    box-shadow: 0 2px 4px rgba(0,0,0,0.2);
    border: none;
}

input[type=range]::-moz-range-track {
    width: 100%;
    height: 6px;
    cursor: pointer;
    background: #e9ecef;
    border-radius: 3px;
}

input[type=range]:disabled::-moz-range-thumb {
    background: #adb5bd;
    cursor: not-allowed;
}

/* Pulsanti principali (Avvia / Stop) */
#btnStart, #btnStop {
    transition: all 0.2s ease-in-out;
}

#btnStart:active, #btnStop:active {
    transform: scale(0.96);
}

/* Margini extra per mobile */
@media (max-width: 576px) {
    .btn-group {
        flex-wrap: wrap;
    }
    .btn-group > .btn {
        flex: 1 1 auto;
        border-radius: 0.375rem !important; /* Rimuove il bordo attaccato per i wrap */
        margin: 2px;
    }
}