/* Header & Navigation */

header {
    background: rgba(22, 22, 29, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.nav {
    padding: 0;
    margin: 0;
    position: relative;
    z-index: 1001;
}

/* Mobile Menu Toggle Button */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-around;
    width: 35px;
    height: 30px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
    z-index: 101;
    position: absolute;
    right: 20px;
    top: 50%;
    transform: translateY(-50%);
}

.mobile-menu-toggle span {
    width: 35px;
    height: 4px;
    background: var(--primary-orange);
    border-radius: 2px;
    transition: all 0.3s ease;
    transform-origin: center;
}

.mobile-menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translateY(10px);
}

.mobile-menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translateY(-10px);
}

ul#menu {
    list-style: none;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 0;
    margin: 0;
    flex-wrap: wrap;
}

ul#menu li {
    margin: 0;
    position: relative;
}

ul#menu li a {
    display: block;
    padding: 20px 30px;
    color: var(--light-text);
    font-size: 16px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: var(--transition);
    position: relative;
}

ul#menu li a::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-red), var(--primary-orange));
    transition: width 0.3s ease;
}

ul#menu li a:hover {
    color: var(--primary-orange);
    text-decoration: none;
}

ul#menu li a:hover::before {
    width: 80%;
}

/* Mobile Navigation - Responsive */
@media (max-width: 768px) {
    .mobile-menu-toggle {
        display: flex;
    }

    header {
        position: sticky;
    }

    .nav {
        padding: 20px 0;
        min-height: 60px;
    }

    ul#menu {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        flex-direction: column;
        background: rgba(22, 22, 29, 0.98);
        backdrop-filter: blur(10px);
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease;
        box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
        z-index: 1002;
    }

    ul#menu.show {
        max-height: 400px;
    }

    ul#menu li {
        z-index: 1003;
    }

    ul#menu li a {
        z-index: 1004;
        position: relative;
    }

    ul#menu li {
        width: 100%;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }

    ul#menu li:last-child {
        border-bottom: none;
    }

    ul#menu li a {
        padding: 18px 20px;
        width: 100%;
        text-align: center;
        font-size: 16px;
    }

    ul#menu li a::before {
        display: none;
    }
}