/* BASE */
body{
    margin:0;
    font-family:Arial,Helvetica,sans-serif;
}

.container{
    max-width:1140px;
    margin:auto;
    padding:0 15px;
}


/* HEADER */
.header{
    background:#fff;
    border-bottom:1px solid #eee;
    position:sticky;
    top:0;
    z-index:999;
    box-shadow:0 2px 10px rgba(0,0,0,0.05);
}

.header-flex{
    display:flex;
    justify-content:space-between;
    align-items:center;
    padding:28px 0;
}


/* LOGO */
.logo a{
    font-size:28px;
    font-weight:700;
    color:#111;
    text-decoration:none;
}


/* NAV */
.nav{
    display:flex;
    align-items:center;
    gap:18px;
}

.nav a{
    text-decoration:none;
    color:#444;
    font-size:15px;
    font-weight:500;
    position:relative;
    padding:6px 0;
    transition:.2s;
}

.nav a:hover{
    color:#e53935;
}


/* UNDERLINE EFFECT */
.nav a::after{
    content:"";
    position:absolute;
    left:0;
    bottom:0;
    width:0%;
    height:2px;
    background:#e53935;
    transition:.25s;
}

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


/* MENU BUTTON */
.menu-btn{
    display:none;
    font-size:48px;
    background:#fff;
    border:none;
    cursor:pointer;
    color:#333;
    padding:10px 16px;
    border-radius:10px;
}

.menu-btn:hover{
    background:#f2f2f2;
}


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

    .menu-btn{
        display:block;
    }

    .nav{
        display:none;
        flex-direction:column;
        position:absolute;
        top:65px;
        left:0;
        width:100%;
        background:#fff;
        border-top:1px solid #eee;
        box-shadow:0 5px 15px rgba(0,0,0,0.05);
    }

    .nav a{
        display:block;
        padding:12px 15px;
        border-bottom:1px solid #f1f1f1;
        font-size:15px;
    }

    .nav.show{
        display:flex;
    }
}