/* =========================================
   CONFIGURAZIONE GLOBALE
   ========================================= */
:root {
    --main-accent: #0066cc;
    /* Blu Hydrobau */
    --main-black: #111111;
    --main-dark: #0a0a0a;
    --main-white: #ffffff;
    --main-gray: #f4f4f4;
    --font-heading: 'Oswald', sans-serif;
    /* Font titoli */
    --font-body: 'Montserrat', sans-serif;
    /* Font testo */
    --nav-height: 90px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    text-decoration: none;
}

body {
    background-color: var(--main-white);
    font-family: var(--font-body);
    color: var(--main-black);
    overflow-x: hidden;
    /* Evita scroll orizzontale */
}

/* Immagini globali */
img {
    transition: transform 0.4s ease;
}

/* Logo Container */
.logo-container {
    display: inline-block;
    padding: 5px 0;
}

/* Classi utility */
.text-blue {
    color: var(--main-accent);
}

.text-center {
    text-align: center;
}

.mb-5 {
    margin-bottom: 3rem;
}

.mt-5 {
    margin-top: 3rem;
}

.section-padding {
    padding: 120px 20px;
}

/* =========================================
   HEADER & NAVIGAZIONE
   ========================================= */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--nav-height);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 40px;
    z-index: 1000;
    background: var(--main-white);
    transition: all 0.4s ease;
    border-bottom: 1px solid #e5e5e5;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
}

/* Header quando si scrolla (aggiunto via JS) */
header.scrolled {
    background: var(--main-white);
    height: 70px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    border-bottom: 1px solid #e5e5e5;
}

.logo {
    height: 50px;
    width: auto;
    filter: none;
}

/* Logo scuro quando header è bianco */
header.scrolled .logo {
    filter: none;
}

.navBar ul {
    display: flex;
    list-style: none;
    gap: 30px;
}

.navBar a {
    font-family: var(--font-heading);
    font-size: 15px;
    font-weight: 500;
    letter-spacing: 1px;
    text-transform: uppercase;
    color: var(--main-black);
    position: relative;
    padding: 5px 0;
    transition: color 0.3s;
}

/* Colore link quando header è bianco */
header.scrolled .navBar a {
    color: var(--main-black);
}

/* Hover Sottolineatura Blu */
.navBar a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0%;
    height: 2px;
    background-color: var(--main-accent);
    transition: width 0.3s ease;
}

.navBar a:hover::after {
    width: 100%;
}

.secondary-link a {
    font-size: 12px;
    opacity: 0.7;
}

/* Mobile Menu */
#menu-bar,
header label {
    display: none;
}

/* =========================================
   RESPONSIVE HEADER
   ========================================= */
@media (max-width: 991px) {
    header {
        padding: 0 20px;
        background: var(--main-white);
        height: 70px;
    }

    header .logo {
        filter: none !important;
    }

    /* Logo sempre scuro su mobile */
    header .navBar a {
        color: var(--main-black);
    }

    header label {
        display: block;
        font-size: 24px;
        color: var(--main-black);
        cursor: pointer;
    }

    .navBar {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--main-white);
        flex-direction: column;
        display: none;
        border-top: 2px solid var(--main-accent);
        padding: 20px 0;
        box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
    }

    #menu-bar:checked~.navBar {
        display: flex;
    }

    .navBar ul {
        flex-direction: column;
        gap: 0;
    }

    .navBar ul li {
        text-align: center;
    }

    .navBar a {
        display: block;
        padding: 15px;
    }
}

/* =========================================
   FOOTER
   ========================================= */
footer {
    background-color: var(--main-white);
    color: var(--main-black);
    padding: 20px 20px;
    text-align: center;
    font-size: 0.9rem;
    border-top: 5px solid var(--main-accent);
}

footer a {
    color: #888;
    transition: color 0.3s;
}

footer a:hover {
    color: var(--main-accent);
}