header {
    background-color: #343a40;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    height: 80px;
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 5%;
    height: 100%;
}

.logo {
    font-size: 1.5rem;
    font-weight: bold;
    color: #fff;
    text-decoration: none;
}

nav ul {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
}

nav ul li {
    margin-left: 2rem;
}

nav ul li a {
    text-decoration: none;
    color: #fff;
    padding-bottom: 5px;
    position: relative;
    transition: color 0.3s ease;
    font-weight: normal;
}

nav ul li a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: 0;
    left: 0;
    background-color: #333;
    transition: width 0.3s ease;
}

nav ul li a:hover,
nav ul li a.active {
    border-bottom: 2px solid #fff;
}

nav ul li a.active {
    font-weight: bold;
}

.hamburger {
    display: none;
    font-size: 1.5rem;
    background: none;
    border: none;
    cursor: pointer;
    background: transparent;
    border: none;
    z-index: 1001;
    position: absolute;
    right: 30px;
    top: 50%;
    transform: translateY(-50%);
}

.hamburger-box {
    width: 20px;
    height: 15px;
    display: inline-block;
    position: relative;
}

.hamburger-inner,
.hamburger-inner::before,
.hamburger-inner::after {
    width: 20px;
    height: 2px;
    background-color: white;
    position: absolute;
    transition: all 0.3s ease;
}

.hamburger-inner::before {
    content: '';
    top: -6px;
}

.hamburger-inner::after {
    content: '';
    bottom: -6px;
}

.hamburger.active .hamburger-inner {
    transform: rotate(45deg);
}

.hamburger.active .hamburger-inner::before {
    top: 0;
    opacity: 0;
}

.hamburger.active .hamburger-inner::after {
    bottom: 0;
    transform: rotate(-90deg);
}

@media (max-width: 768px) {
    .hamburger {
        display: block;
        top: 50%;
        transform: translateY(-50%);
    }

    .nav-menu {
        position: fixed;
        top: 80px;
        right: -100%;
        height: auto;
        background-color: #343a40;
        transition: right 0.3s ease;
        box-shadow: -2px 2px 5px rgba(0, 0, 0, 0.2);
    }

    .nav-menu.active {
        right: 0;
    }

    .nav-menu ul {
        flex-direction: column;
        height: auto;
        padding: 1rem 0;
    }

    .nav-menu ul li {
        margin: 0;
        height: auto;
    }

    .nav-menu ul li a {
        padding: 0.8rem 1rem;
        display: block;
        width: 100%;
        text-align: left;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }

    .nav-menu ul li:last-child a {
        border-bottom: none;
    }

    .nav-menu ul li a:hover,
    .nav-menu ul li a.active {
        background-color: rgba(255, 255, 255, 0.1);
        color: white;
    }

    header {
        height: 80px;
    }
}

/* Media Queries per Header */
@media (max-width: 1200px) {
    nav ul li {
        margin-left: 1.5rem;
    }
}

@media (max-width: 992px) {
    nav ul li {
        margin-left: 1rem;
    }

    nav ul li a {
        font-size: 0.9rem;
    }
}

@media (max-width: 768px) {
    header .container {
        padding: 0.8rem 5%;
    }

    .hamburger {
        display: block;
        color: #fff;
        font-size: 1.8rem;
        padding: 0.5rem;
        margin-right: -0.5rem;
    }

    .menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background-color: #343a40;
        padding: 1rem 0;
        box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    }

    .menu.active {
        display: flex;
        flex-direction: column;
        align-items: center;
    }

    nav ul li {
        margin: 0;
        width: 100%;
        text-align: center;
    }

    nav ul li a {
        display: block;
        padding: 1rem;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }

    nav ul li:last-child a {
        border-bottom: none;
    }

    nav ul li a:hover,
    nav ul li a.active {
        background-color: rgba(255, 255, 255, 0.1);
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }
}

@media (max-width: 576px) {
    .logo {
        font-size: 1.2rem;
    }

    header .container {
        padding: 0.6rem 4%;
    }
}

@media (max-width: 375px) {
    .hamburger {
        font-size: 1.5rem;
    }

    nav ul li a {
        font-size: 0.85rem;
        padding: 0.8rem;
    }
}