/* =========================
   VARIABILI COLORI
========================= */
:root {
    --blu-app: #1E1E3C; /* new Color(30,30,60) */
    --blu-sidebar: #1E1E3C;
    --grigio-bg: #f2f2f2;
    --bianco: #ffffff;
    --testo: #333;
}

/* =========================
   RESET BASE
========================= */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: Arial, Helvetica, sans-serif;
    background-color: var(--grigio-bg);
    color: var(--testo);
    overflow-x: hidden;
}

/* =========================
   LAYOUT GENERALE
========================= */
.layout {
    display: flex;
}

/* =========================
   SIDEBAR FISSA A SINISTRA
========================= */
.sidebar {
    width: 230px;
    height: 100vh;
    background-color: var(--blu-sidebar);
    color: white;
    position: fixed;
    top: 0;
    left: 0;
    padding: 20px;
    z-index: 1000;
}

/* LOGO */
.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 40px;
   
}

    .logo img {
        width: 40px;
        border-radius: 50px;
    }

    .logo span {
        font-size: 1.2rem;
        font-weight: bold;
    }

/* MENU */
.menu {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

    .menu a {
        color: white;
        text-decoration: none;
        font-size: 1rem;
        transition: opacity 0.2s ease;
    }

        .menu a:hover {
            opacity: 0.7;
        }

/* =========================
   CONTENUTO A DESTRA
========================= */
.content {
    margin-left: 230px;
    width: calc(100% - 230px);
    padding: 40px;
}

/* =========================
   SEZIONI + ANIMAZIONE
========================= */
.sezione {
    min-height: 100vh;
    padding-top: 40px;
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

    .sezione.attiva {
        opacity: 1;
        transform: translateY(0);
    }

    .sezione h1,
    .sezione h2 {
        margin-bottom: 20px;
        color: var(--blu-app);
    }

/* =========================
   HR OMBREGGIATO
========================= */
hr {
    border: none;
    height: 2px;
    background-color: var(--blu-app);
    box-shadow: 0 3px 8px rgba(30, 30, 60, 0.5);
    margin: 60px 0;
}

/* =========================
   BURGER BUTTON (SOLO MOBILE)
========================= */
.burger-btn {
    display: none;
    position: fixed;
    top: 15px;
    left: 15px;
    font-size: 1.6rem;
    padding: 8px 14px;
    background-color: var(--blu-app);
    color: white;
    border: none;
    border-radius: 6px;
    z-index: 2000;
}

/* =========================
   PANNELLO LATERALE DESTRO
   CON TORNA SU
========================= */
#sidePanel {
    position: fixed;
    right: 20px;
    left: auto !important;
    bottom: 20px;
    transform: translateY(-50%);
    background: rgba(30, 30, 60, 0.1);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    padding: 12px;
    border-radius: 30px;
    z-index: 9999;
}

    /* Bottone interno */
    #sidePanel button {
        display: flex;
        align-items: center;
        justify-content: center;
        border-radius: 50%;
        width: 25px;
        height: 25px;
        font-size: 1.25rem;
        background-color: var(--blu-app);
        border-color: var(--blu-app);
        color: white;
        opacity: 0.1;
        transition: opacity 0.2s ease, transform 0.2s ease;
    }

        #sidePanel button:hover {
            opacity: 0.2;
            transform: scale(1.08);
        }

/* =========================
   RESPONSIVE MOBILE
========================= */
@media (max-width: 768px) {

    .burger-btn {
        display: block;
    }

    .sidebar {
        transform: translateX(-100%);
        transition: transform 0.3s ease;
    }

        .sidebar.aperta {
            transform: translateX(0);
        }

    .content {
        margin-left: 0;
        width: 100%;
    }

    #sidePanel {
        right: 10px;
    }
}

/* =========================
   MODALE INGRANDIMENTO IMMAGINI (DESKTOP + MOBILE)
========================= */
.img-modal {
    display: none;
    position: fixed;
    z-index: 9999;
    padding-top: 60px;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.9);
}

.img-modal-content {
    display: block;
    margin: auto;
    max-width: 90%;
    max-height: 90%;
    border-radius: 10px;
}

.close-modal {
    position: absolute;
    top: 20px;
    right: 30px;
    color: white;
    font-size: 40px;
    cursor: pointer;
}

#preview img {
    cursor: pointer;
    transition: transform 0.3s;
}

    #preview img:hover {
        transform: scale(1.03);
    }

/* =========================
   FOOTER
========================= */
.footer {
    background-color: var(--blu-app);
    color: white;
    padding: 20px 0;
}

    .footer a {
        color: white;
        text-decoration: underline;
    }

        .footer a:hover {
            opacity: 0.8;
        }