/*
 * MAI Home - Navigation
 * Header and navigation styles including mobile menu
 */

/* Header */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 9998;
    background-color: rgba(243, 238, 231, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(243, 238, 231, 0.6);
    padding: var(--spacing-sm) 0;
}

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

.site-title {
    font-size: 1.8rem;
    font-weight: 200;
    margin: 0;
    letter-spacing: 0.15em;
}

.site-title a {
    color: var(--text-primary);
    text-decoration: none;
}

/* Navigation */
.main-navigation {
    display: none;
}

@media (min-width: 768px) {
    .main-navigation { 
        display: block; 
    }
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-xl);
    align-items: center;
}

.nav-menu a {
    color: var(--text-primary);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    transition: opacity 0.3s ease;
}

.nav-menu a:hover {
    opacity: 0.7;
}

/* Dropdown */
.has-dropdown {
    position: relative;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background-color: var(--white);
    min-width: 200px;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.1);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    list-style: none;
    padding: var(--spacing-sm) 0;
    border-radius: 2px;
}

.has-dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
}

.dropdown-menu a {
    display: block;
    padding: var(--spacing-xs) var(--spacing-md);
    font-size: 0.8rem;
    color: var(--text-primary);
}

.dropdown-menu a:hover {
    background-color: var(--primary-bg);
    color: var(--text-primary);
}

/* Mobile Menu */
.mobile-menu-toggle {
    display: flex;
    flex-direction: column;
    justify-content: space-around;
    width: 30px;
    height: 24px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    border-radius: 4px;
    transition: background-color 0.3s ease;
}

.mobile-menu-toggle:hover {
    background-color: rgba(26, 26, 26, 0.1);
}

@media (min-width: 768px) {
    .mobile-menu-toggle { 
        display: none; 
    }
}

.mobile-menu-toggle span {
    height: 2px;
    width: 100%;
    background-color: var(--text-primary);
    transition: all 0.3s ease;
    display: block;
    position: relative;
    border-radius: 1px;
}

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

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

.mobile-menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
}

/* Mobile Navigation */
@media (max-width: 767px) {
    .main-navigation {
        position: fixed;
        top: -100vh;
        left: 0;
        right: 0;
        background-color: #ffffff;
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s ease;
        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
        z-index: 9999;
        max-height: calc(100vh - 70px);
        overflow-y: auto;
    }
    
    .main-navigation.active {
        top: 70px;
        opacity: 1;
        visibility: visible;
        background-color: var(--white);
        box-shadow: 0 8px 30px rgba(0, 0, 0, 0.1);
        display: block !important;
    }
    
    .nav-menu {
        flex-direction: column;
        gap: 0;
        padding: var(--spacing-md);
    }
    
    .nav-menu a {
        padding: var(--spacing-md) 0;
        border-bottom: 1px solid var(--primary-bg);
        width: 100%;
        display: block;
        color: var(--text-primary);
        font-size: 16px;
        font-weight: 500;
        letter-spacing: 0.1em;
        text-transform: uppercase;
        transition: opacity 0.3s ease;
    }
    
    .nav-menu a:hover {
        opacity: 0.7;
    }
    
    .dropdown-menu {
        position: static;
        box-shadow: none;
        opacity: 1;
        visibility: visible;
        transform: none;
        background-color: var(--primary-bg);
        margin-left: var(--spacing-md);
        display: none;
    }
    
    .dropdown-open .dropdown-menu {
        display: block;
    }
}

/* Prevent body scroll when mobile menu is open */
body.menu-open {
    overflow: hidden;
}

/* Prevent scroll during video intro */
body.video-intro-active {
    overflow: hidden !important;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    width: 100%;
    height: 100vh;
}

html.video-intro-active {
    overflow: hidden !important;
}