/* Header Styles */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: var(--space-sm) 0;
    transition: all 0.4s ease;
    background-color: rgba(13, 13, 13, 0.8);
    backdrop-filter: blur(10px);
}

header.scrolled {
    background-color: var(--dark-color);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo h1 {
    margin: 0;
    font-size: 1.8rem;
    color: var(--primary-color);
    text-transform: uppercase;
    letter-spacing: 1px;
    position: relative;
    transition: all 0.3s ease;
}

.logo h1::before {
    content: '';
    position: absolute;
    width: 100%;
    height: 2px;
    bottom: -5px;
    left: 0;
    background-color: var(--primary-color);
    transform-origin: right;
    transform: scaleX(0);
    transition: transform 0.3s ease-out;
}

.logo h1:hover::before {
    transform-origin: left;
    transform: scaleX(1);
}

/* Navigation */
nav {
    display: flex;
    align-items: center;
}

.nav-menu {
    display: flex;
    list-style: none;
}

.nav-menu li {
    margin-left: var(--space-md);
}

.nav-menu li a {
    color: var(--light-color);
    text-transform: uppercase;
    font-weight: 500;
    font-size: 0.9rem;
    letter-spacing: 1px;
    padding: 8px 0;
    position: relative;
}

.nav-menu li a::after {
    content: '';
    position: absolute;
    width: 100%;
    height: 2px;
    bottom: 0;
    left: 0;
    background-color: var(--primary-color);
    transform: scaleX(0);
    transform-origin: right;
    transition: transform 0.3s ease;
}

.nav-menu li a:hover, .nav-menu li a.active {
    color: var(--primary-color);
}

.nav-menu li a:hover::after, .nav-menu li a.active::after {
    transform: scaleX(1);
    transform-origin: left;
}

/* Mobile Menu Toggle */
.menu-toggle {
    display: none;
    cursor: pointer;
    width: 30px;
    height: 20px;
    position: relative;
    z-index: 1001;
}

.menu-toggle span {
    display: block;
    width: 100%;
    height: 2px;
    background-color: var(--primary-color);
    margin: 5px 0;
    transition: all 0.3s ease;
}

/* Responsive Navigation */
@media (max-width: 768px) {
    .menu-toggle {
        display: block;
    }
    
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 70%;
        height: 100vh;
        background-color: var(--dark-accent);
        flex-direction: column;
        align-items: center;
        justify-content: center;
        padding: var(--space-lg);
        transition: all 0.5s ease;
        z-index: 1000;
    }
    
    .nav-menu.active {
        right: 0;
    }
    
    .nav-menu li {
        margin: var(--space-sm) 0;
    }
    
    .nav-menu li a {
        font-size: 1.1rem;
    }
    
    .menu-toggle.active span:nth-child(1) {
        transform: translateY(7px) rotate(45deg);
    }
    
    .menu-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    
    .menu-toggle.active span:nth-child(3) {
        transform: translateY(-7px) rotate(-45deg);
    }
}

@media (max-width: 480px) {
    .logo h1 {
        font-size: 1.5rem;
    }
    
    .nav-menu {
        width: 80%;
    }
}