/* Main Header */
.main-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    padding: var(--space-4) var(--space-5);
    z-index: 100;
    transition: background-color var(--transition-medium);
}

.main-header.scrolled {
    background-color: rgba(18, 18, 18, 0.9);
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
    padding: var(--space-3) var(--space-5);
}

.main-nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1400px;
    margin: 0 auto;
}

.nav-left, .nav-right {
    flex: 1;
}

.nav-left ul, .nav-right ul {
    display: flex;
    align-items: center;
}

.nav-left ul {
    justify-content: flex-start;
}

.nav-right ul {
    justify-content: flex-end;
}

.nav-link {
    color: var(--sand-beige);
    padding: var(--space-2) var(--space-3);
    margin: 0 var(--space-2);
    font-family: var(--font-heading);
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    transition: color var(--transition-short);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: var(--holo-teal);
    transform: scaleX(0);
    transform-origin: center;
    transition: transform var(--transition-medium);
}

.nav-link:hover {
    color: var(--holo-teal);
}

.nav-link:hover::after {
    transform: scaleX(1);
}

.logo-container {
    text-align: center;
}

.logo {
    color: var(--sand-beige);
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.5rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    display: inline-block;
    transition: all var(--transition-short);
}

.logo:hover {
    color: var(--holo-teal);
    text-shadow: 0 0 10px rgba(0, 245, 212, 0.5);
}

.book-now-btn {
    background-color: transparent;
    color: var(--holo-teal);
    border: 1px solid var(--holo-teal);
    padding: var(--space-2) var(--space-4);
    margin-left: var(--space-3);
    font-family: var(--font-heading);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    border-radius: var(--radius-sm);
    transition: all var(--transition-medium);
}

.book-now-btn:hover {
    background-color: var(--holo-teal);
    color: var(--desert-black);
    box-shadow: var(--shadow-glow-teal);
}

/* Mobile Menu Toggle */
.menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 30px;
    height: 21px;
    cursor: pointer;
    z-index: 200;
}

.menu-toggle span {
    display: block;
    width: 100%;
    height: 3px;
    background-color: var(--sand-beige);
    border-radius: var(--radius-full);
    transition: all var(--transition-medium);
}

.menu-toggle.active span:nth-child(1) {
    transform: translateY(9px) rotate(45deg);
}

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

.menu-toggle.active span:nth-child(3) {
    transform: translateY(-9px) rotate(-45deg);
}

/* Mobile Menu */
.mobile-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 100%;
    height: 100vh;
    background-color: rgba(18, 18, 18, 0.95);
    backdrop-filter: blur(10px);
    z-index: 99;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: right var(--transition-medium);
}

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

.mobile-menu ul {
    text-align: center;
}

.mobile-menu ul li {
    margin: var(--space-4) 0;
}

.mobile-menu ul li a {
    color: var(--sand-beige);
    font-family: var(--font-heading);
    font-size: 1.5rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    transition: all var(--transition-short);
}

.mobile-menu ul li a:hover {
    color: var(--holo-teal);
    text-shadow: 0 0 10px rgba(0, 245, 212, 0.3);
}

.mobile-menu .book-now-btn {
    display: inline-block;
    margin-top: var(--space-4);
    padding: var(--space-3) var(--space-6);
}

/* Responsive Navigation */
@media (max-width: 992px) {
    .nav-left ul, .nav-right ul {
        display: none;
    }
    
    .menu-toggle {
        display: flex;
    }
    
    .logo-container {
        flex: 1;
        text-align: left;
    }
}

@media (max-width: 576px) {
    .main-header {
        padding: var(--space-3) var(--space-4);
    }
    
    .logo {
        font-size: 1.25rem;
    }
}