/* CSS Variables for Header */
:root {
    --header-bg: rgba(255, 255, 255, 0.95);
    --header-border: #e5e7eb;
    --header-shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1);
    --header-shadow-hover: 0 4px 6px -1px rgb(0 0 0 / 0.1);
    --logo-hover-scale: 1.05;
    --nav-link-hover-bg: #f9fafb;
    --share-btn-gradient: linear-gradient(135deg, #7c3aed 0%, #6d28d9 100%);
    --share-btn-gradient-hover: linear-gradient(135deg, #6d28d9 0%, #7c3aed 100%);
    --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-fast: all 0.2s ease-out;
}

/* Global overflow prevention */
html, body {
    overflow-x: hidden !important;
    max-width: 100vw !important;
    box-sizing: border-box !important;
}

*, *::before, *::after {
    box-sizing: border-box !important;
}

/* Main Header Container - Fixed Position for Stability */
.navbar {
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
    padding: 0.75rem 0;
    /* FIXED: Changed from sticky to fixed for stability */
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1050;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    width: 100%;
    /* CRITICAL: Optimize for scroll performance */
    transform: translateZ(0);
    will-change: opacity;
    transition: opacity 0.3s ease, backdrop-filter 0.3s ease;
    overflow: hidden;
    box-sizing: border-box;
    /* CRITICAL: Prevent header from interfering with scroll boundary detection */
    contain: layout; /* Removed 'style' to fix dropdown issues */
    overscroll-behavior: none;
}

    /* Header on scroll effect - Only opacity and blur changes */
    .navbar.scrolled {
        background: rgba(255, 255, 255, 0.9);
        backdrop-filter: blur(25px);
        -webkit-backdrop-filter: blur(25px);
        box-shadow: 0 8px 40px rgba(0, 0, 0, 0.15);
        border-bottom: 1px solid rgba(124, 58, 237, 0.1);
    }

    /* Container Layout - Force Single Row */
    .navbar .container {
        display: flex;
        justify-content: center;
        align-items: center;
        max-width: 100%;
        width: 100%;
        margin: 0 auto;
        padding: 0 1rem;
        gap: 1.5rem;
        flex-wrap: nowrap;
        position: relative;
        overflow: hidden;
        height: auto;
        box-sizing: border-box;
        z-index: 1051; /* Higher than navbar base */
    }

/* Navigation Items Container */
.navbar-nav {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin: 0;
    padding: 0;
    list-style: none;
    flex-shrink: 0;
}

/* Logo - Center Element */
.navbar-brand {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--gray-900) !important;
    transition: var(--transition-smooth);
    padding: 0.4rem 0.8rem;
    border-radius: 0.6rem;
    white-space: nowrap;
    order: 2;
    flex-shrink: 0;
}

    .navbar-brand:hover {
        color: var(--primary) !important;
        text-decoration: none;
        transform: scale(var(--logo-hover-scale));
        background-color: rgba(124, 58, 237, 0.05);
    }

    .navbar-brand:focus {
        outline: 2px solid var(--primary);
        outline-offset: 2px;
    }

    /* Logo Image */
    .navbar-brand img {
        height: 50px;
        width: auto;
        object-fit: contain;
        transition: var(--transition-fast);
        flex-shrink: 0;
    }

    .navbar-brand:hover img {
        filter: brightness(1.1) drop-shadow(0 0 8px rgba(124, 58, 237, 0.3));
    }

/* Left Navigation Items */
.navbar-nav-left {
    order: 1;
    flex-direction: row-reverse;
}

/* Right Navigation Items */
.navbar-nav-right {
    order: 3;
    position: relative;
    z-index: 1052; /* Higher than container */
    contain: none; /* Remove containment that interferes with dropdown */
}

/* Navigation Items */
.nav-item {
    position: relative;
    flex-shrink: 0;
}

.nav-link {
    color: var(--gray-700) !important;
    font-weight: 500;
    padding: 0.6rem 0.8rem;
    border-radius: 0.5rem;
    transition: var(--transition-fast);
    position: relative;
    text-decoration: none;
    white-space: nowrap;
    display: flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.9rem;
}

    .nav-link:hover {
        color: var(--primary) !important;
        background-color: var(--nav-link-hover-bg);
        text-decoration: none;
        transform: translateY(-1px);
    }

    .nav-link:focus {
        outline: 2px solid var(--primary);
        outline-offset: 2px;
    }

    .nav-link.active {
        color: var(--primary) !important;
        background-color: rgba(124, 58, 237, 0.1);
        backdrop-filter: blur(15px);
        font-weight: 600;
        box-shadow: 0 4px 12px rgba(124, 58, 237, 0.15);
    }

        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 50%;
            transform: translateX(-50%);
            width: 16px;
            height: 2px;
            background: var(--primary);
            border-radius: 1px;
        }

/* Share Button - Enhanced Glass */
.share-btn {
    background: linear-gradient(135deg, rgba(124, 58, 237, 0.9), rgba(109, 40, 217, 0.9));
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.2);
    padding: 0.6rem 1rem;
    border-radius: 0.5rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition-fast);
    display: flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.85rem;
    white-space: nowrap;
    box-shadow: 0 4px 16px rgba(124, 58, 237, 0.3);
    position: relative;
    overflow: hidden;
    flex-shrink: 0;
}

    .share-btn::before {
        content: '';
        position: absolute;
        top: 0;
        left: -100%;
        width: 100%;
        height: 100%;
        background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
        transition: left 0.5s;
    }

    .share-btn:hover::before {
        left: 100%;
    }

    .share-btn:hover {
        background: linear-gradient(135deg, rgba(109, 40, 217, 1), rgba(124, 58, 237, 1));
        transform: translateY(-2px);
        box-shadow: 0 8px 25px rgba(124, 58, 237, 0.4);
        border-color: rgba(255, 255, 255, 0.3);
    }

    .share-btn:active {
        transform: translateY(0);
        box-shadow: 0 2px 4px rgba(124, 58, 237, 0.2);
    }

    .share-btn:focus {
        outline: 2px solid white;
        outline-offset: 2px;
    }

/* Language Dropdown Container */
.language-dropdown {
    position: relative;
    flex-shrink: 0;
    z-index: 1053; /* Higher than nav-right */
    contain: none; /* Remove containment that interferes with dropdown */
}

.language-toggle {
    display: flex !important;
    align-items: center !important;
    gap: 0.4rem !important;
    cursor: pointer !important;
    user-select: none !important;
    background: none !important;
    border: none !important;
    color: var(--gray-700) !important;
    font-weight: 500 !important;
    padding: 0.6rem 0.8rem !important;
    border-radius: 0.5rem !important;
    transition: var(--transition-fast) !important;
    text-decoration: none !important;
    white-space: nowrap !important;
    font-size: 0.9rem !important;
}

    .language-toggle:hover {
        color: var(--primary) !important;
        background-color: var(--nav-link-hover-bg) !important;
        text-decoration: none !important;
        transform: translateY(-1px) !important;
    }

    .language-toggle:focus {
        outline: 2px solid var(--primary) !important;
        outline-offset: 2px !important;
    }

.dropdown-arrow {
    font-size: 0.6rem !important;
    transition: transform 0.2s ease !important;
}

.language-dropdown:hover .dropdown-arrow {
    transform: rotate(180deg) !important;
}

/* PORTAL LANGUAGE DROPDOWN - LATEST VERSION */

/* Remove the old in-header dropdown */
.language-dropdown .language-menu {
    display: none !important;
}

/* Portal container - positioned outside header */
.language-menu-portal {
    position: fixed !important;
    z-index: 999999 !important;
    pointer-events: none;
    /* Initial positioning - will be overridden by JavaScript */
    top: 0;
    left: 0;
    right: auto;
}

    /* Language menu inside portal */
    .language-menu-portal .language-menu {
        position: relative !important;
        top: auto !important;
        right: auto !important;
        left: auto !important;
        background: white !important;
        border: 1px solid #e5e7eb !important;
        box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04) !important;
        border-radius: 0.5rem !important;
        padding: 0.5rem 0 !important;
        min-width: 140px !important;
        max-width: 200px !important;
        margin: 0 !important;
        opacity: 1 !important;
        visibility: visible !important;
        transform: translateY(0) scale(1) !important;
        transition: opacity 0.15s ease, transform 0.15s ease !important;
        pointer-events: auto !important;
        backdrop-filter: blur(20px) !important;
        -webkit-backdrop-filter: blur(20px) !important;
        /* Ensure it's not affected by containment */
        contain: none !important;
        isolation: auto !important;
        /* Add small animation */
        animation: dropdownFadeIn 0.15s ease-out;
    }

/* Dropdown animation */
@keyframes dropdownFadeIn {
    0% {
        opacity: 0;
        transform: translateY(-5px) scale(0.95);
    }

    100% {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

/* Language items in portal */
.language-menu-portal .language-item {
    display: flex !important;
    align-items: center !important;
    gap: 0.6rem !important;
    padding: 0.5rem 1rem !important;
    color: #374151 !important;
    text-decoration: none !important;
    background: none !important;
    border: none !important;
    width: 100% !important;
    text-align: left !important;
    cursor: pointer !important;
    transition: background-color 0.15s ease !important;
    font-size: 0.9rem !important;
    white-space: nowrap !important;
}

    .language-menu-portal .language-item:hover {
        background-color: #f9fafb !important;
        color: #7c3aed !important;
        text-decoration: none !important;
    }

    .language-menu-portal .language-item.active {
        background-color: #7c3aed !important;
        color: white !important;
        font-weight: 600 !important;
    }

    .language-menu-portal .language-item .flag {
        font-size: 1rem !important;
        width: 20px !important;
        text-align: center !important;
        flex-shrink: 0 !important;
    }

/* RTL Support for dropdown */
[dir="rtl"] .language-menu-portal .language-item {
    text-align: right !important;
    flex-direction: row-reverse !important;
}

/* MOBILE RESPONSIVE - SINGLE ROW FORCED */
@media (max-width: 768px) {
    .navbar {
        padding: 0.25rem 0;
        min-height: 48px;
    }

        .navbar .container {
            gap: 0.2rem;
            padding: 0 0.4rem;
            justify-content: space-between;
            flex-wrap: nowrap !important;
            overflow: hidden;
            max-width: 100vw;
            width: 100%;
        }

    /* Logo - Ultra Compact */
    .navbar-brand {
        font-size: 0.7rem;
        padding: 0.2rem 0.3rem;
        gap: 0.2rem;
        min-width: auto;
        max-width: 140px;
        flex-shrink: 1;
    }

        .navbar-brand img {
            height: 28px;
            width: auto;
            min-width: 28px;
        }

        .navbar-brand span {
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
            max-width: 90px;
        }

    /* Navigation - Ultra Compact */
    .navbar-nav {
        gap: 0.1rem;
        min-width: auto;
        flex-shrink: 1;
    }

    .nav-link {
        padding: 0.25rem 0.3rem;
        font-size: 0.6rem;
        font-weight: 600;
        min-width: auto;
        gap: 0.15rem;
        white-space: nowrap;
    }

        .nav-link span {
            display: inline;
        }

    .share-btn {
        padding: 0.25rem 0.3rem;
        font-size: 0.6rem;
        min-width: auto;
        gap: 0.15rem;
    }

        .share-btn span {
            display: inline;
        }

    /* Mobile language dropdown adjustments */
    .language-toggle {
        padding: 0.25rem 0.3rem !important;
        font-size: 0.6rem !important;
        gap: 0.15rem !important;
    }

        .language-toggle span {
            display: inline !important;
        }

    /* Portal dropdown mobile styles */
    .language-menu-portal .language-menu {
        min-width: 120px !important;
        max-width: 150px !important;
        font-size: 0.8rem !important;
    }

    .language-menu-portal .language-item {
        padding: 0.4rem 0.8rem !important;
        font-size: 0.8rem !important;
    }

        .language-menu-portal .language-item .flag {
            font-size: 0.9rem !important;
            width: 18px !important;
        }
}

/* Very Small Screens - Extra Compact but with text */
@media (max-width: 480px) {
    .navbar {
        padding: 0.2rem 0;
        min-height: 42px;
    }

        .navbar .container {
            gap: 0.1rem;
            padding: 0 0.25rem;
            max-width: 100vw;
            width: 100%;
        }

    .navbar-brand {
        padding: 0.15rem 0.2rem;
        font-size: 0.65rem;
        max-width: 120px;
        gap: 0.15rem;
    }

        .navbar-brand img {
            height: 24px;
            min-width: 24px;
        }

        .navbar-brand span {
            max-width: 80px;
        }

    .nav-link {
        padding: 0.2rem 0.25rem;
        font-size: 0.55rem;
        gap: 0.1rem;
    }

        .nav-link span {
            display: inline;
        }

    .share-btn {
        padding: 0.2rem 0.25rem;
        font-size: 0.55rem;
        gap: 0.1rem;
    }

        .share-btn span {
            display: inline;
        }

    .navbar-nav {
        gap: 0.05rem;
    }

    .language-toggle {
        padding: 0.2rem 0.25rem !important;
        font-size: 0.55rem !important;
        gap: 0.1rem !important;
    }

        .language-toggle span {
            display: inline !important;
        }

    /* Portal dropdown mobile styles */
    .language-menu-portal .language-menu {
        min-width: 100px !important;
        max-width: 130px !important;
        font-size: 0.75rem !important;
    }

    .language-menu-portal .language-item {
        padding: 0.3rem 0.6rem !important;
        font-size: 0.75rem !important;
    }

        .language-menu-portal .language-item .flag {
            font-size: 0.8rem !important;
            width: 16px !important;
        }
}

/* Extra Small - Ultimate Compact but with text kept */
@media (max-width: 360px) {
    .navbar {
        padding: 0.15rem 0;
        min-height: 38px;
    }

        .navbar .container {
            gap: 0.05rem;
            padding: 0 0.15rem;
            max-width: 100vw;
            width: 100%;
        }

    .navbar-brand {
        padding: 0.1rem 0.15rem;
        font-size: 0.6rem;
        max-width: 100px;
        gap: 0.1rem;
    }

        .navbar-brand img {
            height: 20px;
            min-width: 20px;
        }

        .navbar-brand span {
            max-width: 65px;
            font-size: 0.55rem;
        }

    .nav-link {
        padding: 0.15rem 0.2rem;
        font-size: 0.5rem;
        gap: 0.08rem;
        min-width: auto;
    }

        .nav-link span {
            display: inline;
        }

    .share-btn {
        padding: 0.15rem 0.2rem;
        font-size: 0.5rem;
        gap: 0.08rem;
        min-width: auto;
    }

        .share-btn span {
            display: inline;
        }

    .navbar-nav {
        gap: 0.03rem;
    }

    .language-toggle {
        padding: 0.15rem 0.2rem !important;
        font-size: 0.5rem !important;
        gap: 0.08rem !important;
        min-width: auto !important;
    }

        .language-toggle span {
            display: inline !important;
        }

    /* Portal dropdown mobile styles */
    .language-menu-portal .language-menu {
        min-width: 90px !important;
        max-width: 120px !important;
        font-size: 0.7rem !important;
    }

    .language-menu-portal .language-item {
        padding: 0.25rem 0.5rem !important;
        font-size: 0.7rem !important;
    }

        .language-menu-portal .language-item .flag {
            font-size: 0.7rem !important;
            width: 14px !important;
        }
}

/* Accessibility Improvements */
@media (prefers-reduced-motion: reduce) {
    .navbar-brand,
    .nav-link,
    .share-btn,
    .dropdown-arrow,
    .language-menu-portal .language-menu {
        transition: none;
        animation: none;
    }
}

/* Focus indicators for keyboard navigation */
.navbar-brand:focus-visible,
.nav-link:focus-visible,
.share-btn:focus-visible,
.language-toggle:focus-visible,
.language-menu-portal .language-item:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    .navbar {
        border-bottom: 2px solid var(--gray-900);
    }

    .nav-link:hover,
    .nav-link.active {
        background-color: var(--gray-900);
        color: white !important;
    }
}

/* Animation for logo */
@keyframes logoGlow {
    0% {
        filter: brightness(1);
    }

    50% {
        filter: brightness(1.1) drop-shadow(0 0 8px rgba(124, 58, 237, 0.3));
    }

    100% {
        filter: brightness(1);
    }
}

.navbar-brand:hover img {
    animation: logoGlow 0.3s ease-in-out;
}

/* Ripple effect for buttons */
@keyframes ripple {
    0% {
        transform: scale(0);
        opacity: 1;
    }

    100% {
        transform: scale(4);
        opacity: 0;
    }
}

.share-btn:active::after {
    content: '';
    position: absolute;
    left: 50%;
    top: 50%;
    width: 5px;
    height: 5px;
    background: rgba(255, 255, 255, 0.5);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    animation: ripple 0.6s linear;
}

/* Force single row layout - IMPORTANT */
.navbar .container,
.navbar-nav {
    flex-wrap: nowrap !important;
}

    .navbar .container > * {
        flex-shrink: 0 !important;
    }

/* Prevent overflow issues and scrolling in header */
.navbar {
    overflow: hidden !important;
}

/* Ensure header never creates horizontal scroll */
.navbar {
    max-width: 100vw !important;
    width: 100% !important;
    box-sizing: border-box !important;
}

    .navbar .container {
        max-width: 100% !important;
        width: 100% !important;
        box-sizing: border-box !important;
    }

/* Additional mobile overflow prevention */
@media (max-width: 768px) {
    html, body {
        overflow-x: hidden !important;
        width: 100% !important;
        max-width: 100vw !important;
    }

    .navbar {
        margin: 0 !important;
        padding-left: 0 !important;
        padding-right: 0 !important;
    }

        .navbar .container {
            margin: 0 !important;
            padding-left: 0.4rem !important;
            padding-right: 0.4rem !important;
        }
}

@media (max-width: 480px) {
    .navbar .container {
        padding-left: 0.25rem !important;
        padding-right: 0.25rem !important;
    }
}

@media (max-width: 360px) {
    .navbar .container {
        padding-left: 0.15rem !important;
        padding-right: 0.15rem !important;
    }
}