*, ::before, ::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    background-color: #050505;
    font-family: 'Arial', Helvetica, sans-serif;
    overflow: hidden;
}

/* ── Navigation ──────────────────────────────────────────── */

nav {
    width: 100%;
    height: 56px;
    background: rgba(7, 7, 7, 0.95);
    backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    position: relative;
    z-index: 20;
}

nav .menu-item {
    display: flex;
    align-items: center;
    gap: 40px;
    margin-left: 60px;
}

nav .menu-item .iten {
    position: relative;
}

nav .menu-item .iten > a,
nav .menu-item .iten > span {
    font-size: 13px;
    font-weight: 400;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    text-decoration: none;
    color: rgba(241, 241, 241, 0.75);
    cursor: pointer;
    transition: color 0.25s ease;
    padding-bottom: 4px;
    display: inline-block;
    position: relative;
}

nav .menu-item .iten > a::after,
nav .menu-item .iten > span::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 1px;
    background: #fff;
    transition: width 0.25s ease;
}

nav .menu-item .iten:hover > a,
nav .menu-item .iten:hover > span {
    color: #fff;
}

nav .menu-item .iten:hover > a::after,
nav .menu-item .iten:hover > span::after {
    width: 100%;
}

/* ── Submenu ─────────────────────────────────────────────── */

nav .menu-item .iten::after {
    content: '';
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    height: 16px;
}

nav .menu-item .iten .submenu {
    display: none;
    position: absolute;
    top: calc(100% + 16px);
    left: -16px;
    background: #0f0f0f;
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 6px;
    padding: 8px 0;
    min-width: 160px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.6);
    z-index: 30;
}

nav .menu-item .iten:hover .submenu {
    display: block;
    animation: fadeDown 0.18s ease forwards;
}

@keyframes fadeDown {
    from { opacity: 0; transform: translateY(-6px); }
    to   { opacity: 1; transform: translateY(0); }
}

nav .menu-item .iten .submenu .iten {
    padding: 0;
}

nav .menu-item .iten .submenu .iten a {
    display: block;
    padding: 9px 20px;
    font-size: 12px;
    font-weight: 400;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    text-decoration: none;
    color: rgba(241, 241, 241, 0.65);
    transition: color 0.2s ease, background 0.2s ease;
}

nav .menu-item .iten .submenu .iten a::after {
    display: none;
}

nav .menu-item .iten .submenu .iten a:hover {
    color: #fff;
    background: rgba(255, 255, 255, 0.05);
}

/* ── Hero ────────────────────────────────────────────────── */

.content {
    height: calc(100vh - 56px);
    background: linear-gradient(to bottom,
                    rgba(0,0,0,0.96) 0%,
                    rgba(0,0,0,0.75) 35%,
                    rgba(0,0,0,0.25) 100%),
                url("images/bg.jpg");
    background-repeat: no-repeat;
    background-size: cover;
    background-position: center top;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    padding-top: 18vh;
    overflow: hidden;
}

.content h1 {
    color: #fff;
    font-size: clamp(1rem, 5.2vw, 4.8rem);
    font-weight: 200;
    letter-spacing: clamp(0.15rem, 0.7vw, 1rem);
    text-indent: clamp(0.15rem, 0.7vw, 1rem);
    text-align: center;
    white-space: nowrap;
}

.content hr {
    margin-top: 28px;
    width: 60px;
    border: none;
    border-top: 1px solid rgba(255, 255, 255, 0.35);
}

/* ── Hamburger (mobile) ──────────────────────────────────── */

.btn-rond-menu {
    display: none;
}

/* ── Responsive ──────────────────────────────────────────── */

@media screen and (max-width: 1300px) {
    .btn-rond-menu {
        display: flex;
        align-items: center;
        justify-content: center;
        width: 48px;
        height: 48px;
        border: 1px solid rgba(241, 241, 241, 0.3);
        border-radius: 50%;
        background: #1a1a1a;
        position: fixed;
        top: 12px;
        left: 12px;
        z-index: 50;
        cursor: pointer;
        transition: background 0.2s ease;
    }

    .btn-rond-menu:hover {
        background: #2a2a2a;
    }

    .cont-ligne {
        width: 22px;
        height: 22px;
        cursor: pointer;
        position: relative;
    }

    .ligne-unique {
        width: 100%;
        height: 2px;
        border-radius: 2px;
        background: #f1f1f1;
        position: absolute;
        top: 50%;
        left: 50%;
        transform: translate(-50%, -50%);
        transition: background 0.3s ease;
    }

    .ligne-unique::before,
    .ligne-unique::after {
        content: '';
        width: 100%;
        height: 2px;
        border-radius: 2px;
        background: #f1f1f1;
        position: absolute;
        left: 0;
        transition: transform 0.3s 0.3s ease, top 0.3s ease, bottom 0.3s ease;
    }

    .ligne-unique::before { bottom: 7px; }
    .ligne-unique::after  { top: 7px; }

    .cont-ligne.active .ligne-unique::after {
        top: 0;
        transform: rotate(45deg);
        transition: top 0.3s ease, transform 0.3s 0.3s ease;
    }

    .cont-ligne.active .ligne-unique::before {
        bottom: 0;
        transform: rotate(-45deg);
        transition: bottom 0.3s ease, transform 0.3s 0.3s ease;
    }

    .cont-ligne.active .ligne-unique {
        background: transparent;
    }

    nav {
        width: 220px;
        height: 100vh;
        position: fixed;
        top: 0;
        left: -260px;
        flex-direction: column;
        justify-content: flex-start;
        align-items: flex-start;
        padding-top: 80px;
        transition: left 0.3s ease;
        z-index: 40;
        border-bottom: none;
        border-right: 1px solid rgba(255, 255, 255, 0.06);
    }

    .menu-visible {
        left: 0 !important;
    }

    nav .menu-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 24px;
        margin-left: 28px;
    }

    nav .menu-item .iten .submenu {
        position: static;
        background: transparent;
        border: none;
        box-shadow: none;
        padding: 8px 0 0 12px;
        min-width: unset;
        animation: none;
    }

    nav .menu-item .iten:hover .submenu {
        animation: none;
    }

    nav .menu-item .iten .submenu .iten a {
        padding: 6px 0;
    }
}