/* Navigation Styles */
.main-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: var(--spacing-xs) var(--spacing-md);
    background: var(--egyptian-dark);
    border-bottom: 2px solid var(--egyptian-gold);
    box-shadow: 0 4px 15px rgba(173, 130, 49, 0.2);
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all 0.3s ease;
}

/* Scrolled Navigation State */
.main-nav.scrolled {
    padding: calc(var(--spacing-xs) / 2) var(--spacing-md);
    background: rgba(63, 57, 56, 0.95);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
}

/* Logo Styles */
.nav-logo {
    position: relative;
    width: 120px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.nav-logo img {
    height: 35px;
    width: auto;
    filter: drop-shadow(0 0 8px rgba(173, 130, 49, 0.5));
    transition: all 0.3s ease;
}

.nav-logo:hover img {
    filter: drop-shadow(0 0 12px rgba(228, 213, 189, 0.7));
    transform: scale(1.05);
}

/* Navigation Links */
.nav-links {
    display: flex;
    gap: var(--spacing-md);
    align-items: center;
}

.nav-links a {
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    position: relative;
    padding: 0.5rem 1rem;
    border-radius: var(--border-radius-sm);
}

.nav-links a:hover {
    color: var(--text-accent);
    background: var(--bg-hover);
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--egyptian-gold);
    transition: all 0.3s ease;
    transform: translateX(-50%);
}

.nav-links a:hover::after,
.nav-links a.active::after {
    width: 80%;
}

/* Authentication Buttons */
.auth-btn {
    padding: 0.5rem 1.5rem;
    border-radius: var(--border-radius-md);
    background: transparent;
    border: 2px solid var(--egyptian-gold);
    color: var(--text-accent);
    transition: all 0.3s ease;
    text-decoration: none;
    font-weight: 600;
}

.auth-btn.register {
    background: var(--egyptian-gold);
    color: var(--egyptian-dark);
}

.auth-btn:hover {
    background: var(--egyptian-gold);
    color: var(--egyptian-dark);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(173, 130, 49, 0.3);
}

/* Mobile Menu Button */
.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    z-index: 1001;
    position: relative;
}

.mobile-menu-btn span {
    display: block;
    width: 25px;
    height: 2px;
    background: var(--egyptian-gold);
    margin: 5px 0;
    transition: all 0.3s ease;
}

/* Mobile Navigation */
.mobile-nav {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background: rgba(63, 57, 56, 0.98);
    padding-top: 80px;
    flex-direction: column;
    align-items: center;
    gap: 20px;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.mobile-nav a {
    color: var(--text-primary);
    text-decoration: none;
    font-size: 1.2rem;
    padding: 10px 20px;
    width: 80%;
    text-align: center;
    border-bottom: 1px solid rgba(173, 130, 49, 0.2);
    transition: all 0.3s ease;
}

.mobile-nav a:last-child {
    border-bottom: none;
}

.mobile-nav a:hover {
    color: var(--egyptian-gold);
    transform: translateX(10px);
}

/* Mobile Menu Active States */
.main-nav.mobile-menu-active .mobile-nav {
    display: flex;
    opacity: 1;
    visibility: visible;
}

.main-nav.mobile-menu-active .mobile-menu-btn span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

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

.main-nav.mobile-menu-active .mobile-menu-btn span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
}

/* Responsive Design */
@media (max-width: 1024px) {
    .nav-links {
        gap: var(--spacing-sm);
    }

    .nav-links a {
        padding: 0.4rem 0.8rem;
    }
}

@media (max-width: 768px) {
    .desktop-nav {
        display: none;
    }

    .mobile-menu-btn {
        display: block;
    }

    .main-nav {
        padding: 15px 20px;
    }

    .auth-btn {
        padding: 0.4rem 1.2rem;
        font-size: 0.9rem;
        width: 100%;
        text-align: center;
        margin-top: var(--spacing-sm);
    }
}

@media (min-width: 769px) {
    .mobile-nav {
        display: none !important;
    }
}

@media (max-width: 480px) {
    .nav-logo {
        width: 100px;
    }

    .nav-logo img {
        height: 30px;
    }

    .auth-btn {
        padding: 0.3rem 1rem;
        font-size: 0.8rem;
    }
}