/* ============================================================
 * MODERN HEADER STYLES
 * ============================================================ */

.modern-header {
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-primary);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: var(--z-sticky);
    contain: layout style;
}

.header-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 14px var(--spacing-6);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-6);
    max-height: 68px;
}

/* Logo */
.logo-modern {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    text-decoration: none;
    transition: transform var(--transition-fast);
}

.logo-modern:hover {
    transform: translateY(-2px);
}

.logo-modern img {
    height: 60px;
    width: auto;
}

.logo-text {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary);
    display: none;
}

/* Thanh điều hướng */
.nav-modern {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    position: relative;
}

/* Chuyển đổi ngôn ngữ */
.lang-switcher {
    display: flex;
    align-items: center;
    gap: var(--spacing-1);
    padding: var(--spacing-2) var(--spacing-3);
    background: var(--bg-elevated);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-full);
    cursor: pointer;
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--text-secondary);
    transition: background var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
}

.lang-switcher:hover {
    background: var(--color-primary);
    color: var(--btn-hover-color);
    border-color: var(--color-primary);
}

.lang-switcher .lang-flag {
    font-size: 18px;
    line-height: 1;
}

.lang-switcher .lang-code {
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
}

/* Ẩn giao diện Google Translate mặc định */
#google_translate_element {
    position: absolute;
    top: -9999px;
    left: -9999px;
    opacity: 0;
    pointer-events: none;
}

.goog-te-banner-frame {
    display: none !important;
}

.skiptranslate.goog-te-gadget {
    position: absolute;
    top: -9999px;
    left: -9999px;
    height: 0;
    overflow: hidden;
}

body>.skiptranslate {
    display: none !important;
}

body {
    top: 0 !important;
}

/* Modal chọn ngôn ngữ */
.lang-selector-search {
    width: 100%;
    margin-bottom: 12px;
}

.lang-selector-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 6px;
    max-height: 350px;
    overflow-y: auto;
    padding-right: 4px;
}

.lang-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 10px;
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: background 0.15s ease, border-color 0.15s ease;
    background: var(--bg-primary);
    min-width: 0;
    overflow: hidden;
}

.lang-item:hover {
    border-color: var(--color-primary);
    background: var(--bg-tertiary);
}

.lang-item.active {
    border-color: var(--color-primary);
    background: rgba(var(--color-primary-rgb, 139, 92, 246), 0.1);
}

.lang-item .li-flag {
    font-size: 20px;
    line-height: 1;
}

.lang-item .li-name {
    font-size: 13px;
    font-weight: 500;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    min-width: 0;
    flex: 1;
}

.lang-selector-grid::-webkit-scrollbar {
    width: 4px;
}

.lang-selector-grid::-webkit-scrollbar-thumb {
    background: var(--border-secondary);
    border-radius: 4px;
}

/* Nút sáng/tối */
.theme-toggle {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-elevated);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: background var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast);
    font-size: var(--font-size-base);
    color: var(--text-secondary);
}

.theme-toggle:hover {
    background: var(--color-primary);
    color: var(--btn-hover-color);
    border-color: var(--color-primary);
    transform: rotate(20deg) scale(1.1);
}

/* Nút menu người dùng */
/* Khung menu người dùng — cố định góc phải */
.user-menu-wrapper {
    position: fixed;
    top: 14px;
    right: var(--spacing-6);
    z-index: calc(var(--z-sticky) + 1);
    display: flex;
    align-items: center;
}

.user-menu-toggle {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    padding: var(--spacing-1) var(--spacing-3) var(--spacing-1) var(--spacing-1);
    background: var(--bg-elevated);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.user-menu-toggle:hover {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

.user-menu-avatar {
    width: 28px;
    height: 28px;
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    color: var(--btn-hover-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: var(--font-size-sm);
}

.user-menu-name {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--text-primary);
    max-width: 120px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.user-menu-arrow {
    font-size: 10px;
    color: var(--text-tertiary);
    transition: transform var(--transition-fast);
}

.user-menu-toggle.active .user-menu-arrow {
    transform: rotate(180deg);
}

/* Dropdown menu người dùng */
.user-menu-dropdown {
    position: absolute;
    top: calc(100% + var(--spacing-2));
    right: 0;
    width: 260px;
    max-height: calc(100vh - 80px);
    overflow-y: auto;
    background: var(--bg-secondary);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    z-index: var(--z-dropdown);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: opacity 0.2s ease, visibility 0.2s ease, transform 0.2s ease;
}

.user-menu-dropdown.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.user-menu-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    padding: var(--spacing-4);
    background: var(--bg-tertiary);
}

.user-menu-avatar-lg {
    width: 42px;
    height: 42px;
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    color: var(--btn-hover-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: var(--font-size-lg);
    flex-shrink: 0;
}

.user-menu-info {
    display: flex;
    flex-direction: column;
    gap: 2px;
    min-width: 0;
}

.user-menu-display {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--text-primary);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.user-menu-role {
    font-size: var(--font-size-xs);
    color: var(--text-tertiary);
}

.user-menu-divider {
    height: 1px;
    background: var(--border-primary);
    margin: var(--spacing-1) 0;
}

.user-menu-group {
    padding: var(--spacing-1) 0;
}

/* Widget dung lượng (PC dropdown + Di động menu) */
.storage-widget {
    margin: var(--spacing-2) var(--spacing-3);
    padding: 10px 12px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: background var(--transition-fast);
}

.storage-widget:hover {
    background: rgba(var(--color-primary-rgb, 139, 92, 246), 0.08) !important;
}

.storage-widget-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 6px;
}

.storage-widget-label {
    font-size: 12px;
    font-weight: 500;
    color: var(--text-secondary);
}

.storage-widget-label i {
    margin-right: 4px;
    color: var(--color-primary);
}

.storage-widget-value {
    font-size: 11px;
    font-weight: 600;
    color: var(--text-primary);
}

.storage-widget-bar {
    height: 5px;
    background: rgba(128, 128, 128, 0.3);
    border-radius: 3px;
    overflow: hidden;
}

.storage-widget-bar-fill {
    height: 100%;
    background: var(--color-primary);
    border-radius: 3px;
    transition: width 0.3s ease;
    width: 0%;
}

.user-menu-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    padding: var(--spacing-2) var(--spacing-4);
    color: var(--text-primary);
    font-size: var(--font-size-sm);
    font-weight: 400;
    transition: background var(--transition-fast), color var(--transition-fast);
    cursor: pointer;
    border: none;
    background: none;
    width: 100%;
    text-align: left;
}

.user-menu-item:hover {
    background: var(--bg-tertiary);
    color: var(--color-primary);
}

.user-menu-item i {
    width: 18px;
    text-align: center;
    font-size: var(--font-size-sm);
    color: var(--text-tertiary);
}

.user-menu-item:hover i {
    color: var(--color-primary);
}

.user-menu-item.active {
    background: rgba(var(--color-primary-rgb, 139, 92, 246), 0.1);
    color: var(--color-primary);
}

.user-menu-item.active i {
    color: var(--color-primary);
}

.user-menu-item.user-menu-logout {
    color: var(--color-error);
}

.user-menu-item.user-menu-logout i {
    color: var(--color-error);
}

.user-menu-item.user-menu-logout:hover {
    background: rgba(239, 68, 68, 0.1);
}

/* Liên hệ (Khách) */
.contact-modern {
    display: flex;
    align-items: center;
    gap: var(--spacing-4);
}

.contact-text {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.contact-links-modern {
    display: flex;
    gap: var(--spacing-3);
}

.contact-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    padding: var(--spacing-2) var(--spacing-3);
    background: var(--bg-elevated);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    text-decoration: none;
    font-size: var(--font-size-sm);
    transition: background var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast);
}

.contact-link:hover {
    background: var(--color-primary);
    color: var(--btn-hover-color);
    border-color: var(--color-primary);
    transform: translateY(-1px);
}

/* Thao tác header di động (sáng/tối + ngôn ngữ) */
.mobile-header-actions {
    display: none;
    align-items: center;
    gap: var(--spacing-2);
}

/* Nút menu FAB di động */

/* ============================================================
 * RESPONSIVE — Header & Navigation
 * ============================================================ */
@media (max-width: 1450px) {
    .nav-modern {
        margin-right: 120px;
    }
}

@media (max-width: 1200px) {
    .logo-text {
        display: none;
    }

    .lang-switcher .lang-code {
        display: none;
    }
}

@media (max-width: 900px) {
    .nav-modern {
        display: none;
    }

    .mobile-header-actions {
        display: flex;
        position: absolute;
        z-index: 2;
    }

    .mobile-header-actions.mobile-left {
        left: var(--spacing-4);
    }

    .mobile-header-actions.mobile-right {
        right: var(--spacing-4);
    }

    .header-container {
        padding: var(--spacing-2) var(--spacing-4);
        justify-content: center;
        position: relative;
    }

    .logo-modern {
        margin: 0 auto;
    }

    .lang-selector-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .color-customizer-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .color-customizer-item {
        padding: 12px 8px;
    }

    .color-customizer-item input[type="color"] {
        width: 44px;
        height: 44px;
    }
}