/**
 * Mustasfaa.com - Header Stylesheet
 * Handles sticky nav, top-bar, mobile slide-out menu drawer, and active transitions
 */

.main-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1005;
    background-color: var(--white);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
}

body {
    padding-top: 130px; /* Offset fixed header height on desktop */
}

@media (max-width: 991px) {
    body {
        padding-top: 85px !important; /* Offset fixed header height on mobile (top bar is hidden) */
    }
}

/* Header Shrink on Scroll */
.main-header.header-shrink {
    box-shadow: var(--shadow-md);
}

.main-header.header-shrink .top-bar {
    margin-top: -40px; /* Slide top bar out of view */
    opacity: 0;
    pointer-events: none;
}

.main-header.header-shrink .nav-bar {
    padding: 10px 0;
}

/* Top Bar Styles */
.top-bar {
    background-color: var(--dark);
    color: rgba(255, 255, 255, 0.85);
    font-size: 0.85rem;
    padding: 8px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    transition: all var(--transition-normal);
    height: 40px;
    box-sizing: border-box;
}

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

.top-contacts {
    display: flex;
    gap: 20px;
}

.top-link {
    color: rgba(255, 255, 255, 0.85);
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.top-link:hover {
    color: var(--secondary);
}

.top-link .icon {
    width: 14px;
    height: 14px;
}

.top-meta {
    display: flex;
    align-items: center;
    gap: 20px;
}

.trust-badge-mini {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-weight: 500;
}

.trust-badge-mini .icon {
    width: 14px;
    height: 14px;
}

/* Language Dropdown Selector */
.lang-selector {
    position: relative;
    cursor: pointer;
    padding: 4px 0;
}

.current-lang {
    font-weight: 600;
    background-color: rgba(255, 255, 255, 0.15);
    padding: 2px 8px;
    border-radius: var(--radius-sm);
    display: inline-block;
    transition: var(--transition-fast);
}

.current-lang:hover {
    background-color: var(--secondary);
    color: var(--white);
}

.lang-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    background-color: var(--white);
    box-shadow: var(--shadow-lg);
    border-radius: var(--radius-md);
    padding: 8px 0;
    min-width: 140px;
    display: none;
    z-index: 100;
    margin-top: 5px;
}

.lang-dropdown a {
    display: block;
    padding: 8px 16px;
    color: var(--dark);
    font-size: 0.85rem;
    transition: var(--transition-fast);
}

.lang-dropdown a:hover {
    background-color: var(--light);
    color: var(--primary);
}

.lang-selector:hover .lang-dropdown {
    display: block;
}

/* Navigation Bar */
.nav-bar {
    padding: 18px 0;
    transition: padding var(--transition-normal);
}

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

/* Logo Design */
.logo-container {
    display: flex;
    flex-direction: column;
}

.logo-text {
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--primary);
    line-height: 1;
    font-family: var(--font-heading);
    letter-spacing: -0.5px;
}

.logo-text .dot {
    color: var(--secondary);
}

.logo-subtext {
    font-size: 0.65rem;
    font-weight: 600;
    color: var(--slate-gray);
    letter-spacing: 2px;
    margin-top: 2px;
    text-transform: uppercase;
}

/* Desktop Menu items */
.nav-menu {
    display: flex;
    align-items: center;
    gap: 30px;
}

.mobile-only-cta,
.mobile-menu-footer {
    display: none !important;
}

.nav-item {
    font-family: var(--font-heading);
    color: var(--dark);
    font-weight: 500;
    font-size: 0.95rem;
    padding: 8px 0;
    position: relative;
}

.nav-item::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--secondary);
    transition: width var(--transition-fast);
}

.nav-item:hover {
    color: var(--primary);
}

.nav-item:hover::after {
    width: 100%;
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 15px;
}

/* Mobile Hamburger button (Optimized for 44x44px Tap Target) */
.menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 44px;
    height: 44px;
    background: transparent;
    border: none;
    cursor: pointer;
    outline: none;
    z-index: 1005;
    padding: 0;
    gap: 6px;
    position: relative; /* Activate z-index stacking context on mobile */
}

.menu-toggle .bar {
    width: 24px;
    height: 2.5px;
    background-color: var(--dark);
    border-radius: var(--radius-full);
    transition: all var(--transition-normal);
}

/* Mobile backdrop overlay */
.menu-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(30, 41, 59, 0.4);
    backdrop-filter: blur(4px);
    opacity: 0;
    visibility: hidden;
    z-index: 1001;
    transition: opacity var(--transition-normal), visibility var(--transition-normal);
}

/* Mobile Responsive drawer navigation */
@media (max-width: 991px) {
    .top-bar {
        display: none !important; /* Hide top bar on mobile/tablet to save space */
    }

    .menu-toggle {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        top: 0;
        right: -320px;
        width: 320px;
        height: 100vh;
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(10px);
        box-shadow: -10px 0 30px rgba(15, 23, 42, 0.12);
        flex-direction: column;
        align-items: flex-start;
        justify-content: flex-start;
        padding: 80px 30px 40px 30px;
        gap: 14px;
        z-index: 1002;
        transition: right 0.4s cubic-bezier(0.16, 1, 0.3, 1);
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
    }

    .nav-menu::-webkit-scrollbar {
        width: 4px;
    }

    .nav-menu::-webkit-scrollbar-thumb {
        background: var(--secondary-light);
        border-radius: var(--radius-full);
    }

    /* Staggered slide-in animation for menu items on mobile */
    .nav-menu li {
        opacity: 0;
        transform: translateX(30px);
        transition: opacity 0.4s ease, transform 0.4s ease;
        width: 100%;
    }

    body.menu-open .nav-menu li {
        opacity: 1;
        transform: translateX(0);
    }

    .nav-menu li:nth-child(1) { transition-delay: 0.05s; }
    .nav-menu li:nth-child(2) { transition-delay: 0.1s; }
    .nav-menu li:nth-child(3) { transition-delay: 0.15s; }
    .nav-menu li:nth-child(4) { transition-delay: 0.2s; }
    .nav-menu li:nth-child(5) { transition-delay: 0.25s; }
    .nav-menu li:nth-child(6) { transition-delay: 0.3s; }
    .nav-menu li:nth-child(7) { transition-delay: 0.35s; }
    .nav-menu li:nth-child(8) { transition-delay: 0.4s; }
    .nav-menu li.mobile-menu-footer { transition-delay: 0.45s; }

    .nav-item {
        font-size: 1.05rem;
        width: 100%;
        display: block;
        padding: 8px 0;
    }

    .mobile-only-cta {
        display: block;
        width: 100%;
        margin-top: 10px;
        margin-bottom: 10px;
    }

    /* Mobile Menu Drawer Footer Styles */
    .mobile-menu-footer {
        display: block !important;
        width: 100%;
        margin-top: auto; /* Push to bottom */
        padding-top: 20px;
        border-top: 1px solid var(--border);
    }

    .mobile-lang-selector {
        margin-bottom: 15px;
    }

    .mobile-lang-title {
        display: block;
        font-size: 0.75rem;
        color: var(--slate-gray);
        margin-bottom: 8px;
        font-weight: 600;
        text-transform: uppercase;
        letter-spacing: 0.5px;
    }

    .mobile-lang-links {
        display: flex;
        gap: 8px;
        flex-wrap: wrap;
    }

    .mobile-lang-item {
        font-size: 0.8rem;
        font-weight: 600;
        padding: 4px 10px;
        background: var(--light);
        border-radius: var(--radius-sm);
        color: var(--dark) !important;
        transition: all var(--transition-fast);
        border: 1px solid var(--border);
    }

    .mobile-lang-item.active {
        background: var(--secondary) !important;
        color: var(--white) !important;
        border-color: var(--secondary);
    }

    .mobile-contact-links {
        display: flex;
        flex-direction: column;
        gap: 10px;
        margin-top: 10px;
    }

    .mobile-contact-item {
        display: inline-flex;
        align-items: center;
        gap: 10px;
        color: var(--slate-gray) !important;
        font-size: 0.82rem;
        font-weight: 500;
        transition: color var(--transition-fast);
    }

    .mobile-contact-item:hover {
        color: var(--primary) !important;
    }

    .mobile-contact-item svg {
        color: var(--secondary);
        width: 14px;
        height: 14px;
    }

    /* Active Drawer States */
    body.menu-open {
        overflow: hidden;
    }

    body.menu-open .nav-menu {
        right: 0;
    }

    body.menu-open .menu-backdrop {
        opacity: 1;
        visibility: visible;
    }

    /* Animate Hamburger into X */
    body.menu-open .menu-toggle .bar:nth-child(1) {
        transform: translateY(8.5px) rotate(45deg);
    }

    body.menu-open .menu-toggle .bar:nth-child(2) {
        opacity: 0;
    }

    body.menu-open .menu-toggle .bar:nth-child(3) {
        transform: translateY(-8.5px) rotate(-45deg);
    }
}

/* laptop screens layout adjustments to prevent nav menu overlaps */
@media (min-width: 992px) and (max-width: 1200px) {
    .nav-menu {
        gap: 12px !important;
    }
    .nav-item {
        font-size: 0.82rem !important;
    }
    .nav-actions {
        gap: 10px !important;
    }
    .btn-primary.hide-mobile {
        padding: 8px 16px !important;
        font-size: 0.8rem !important;
    }
}

@media (min-width: 1201px) and (max-width: 1350px) {
    .nav-menu {
        gap: 18px !important;
    }
    .nav-item {
        font-size: 0.88rem !important;
    }
}