/* ============================================
   LANGUAGE SWITCHER - NEUBRUTALISM STYLE
   Used across COMP1511, COMP1521, MATH1131, MATH1081
   ============================================ */

/* Language Switcher Container - Neubrutalism */
.language-switcher-host {
    display: flex;
    align-items: center;
}

.language-switcher {
    display: flex;
    gap: var(--nb-space-1);
    background: var(--nb-bg-white);
    padding: var(--nb-space-2);
    border-radius: 0 !important;
    border: var(--nb-border-normal) solid var(--nb-border-dark);
    box-shadow: var(--nb-shadow-md);
    z-index: 1000;
    transition: all var(--nb-transition-fast);
    align-items: center;
    flex-shrink: 0;
    min-width: 120px;
    flex-wrap: nowrap;
}

.language-switcher.has-theme-toggle {
    gap: var(--nb-space-2);
}

#theme-switcher-container {
    display: flex;
    align-items: center;
    justify-content: center;
}

.theme-toggle-wrapper {
    display: flex;
    align-items: center;
    margin-left: var(--nb-space-1);
    padding-left: var(--nb-space-2);
    border-left: var(--nb-border-normal) solid var(--nb-border-dark);
}

.theme-toggle-wrapper--solo {
    margin-left: 0;
    padding-left: 0;
    border-left: none;
}

/* Theme Toggle - Neubrutalism */
.theme-toggle {
    display: inline-flex;
    align-items: center;
    gap: var(--nb-space-2);
    padding: var(--nb-space-2) var(--nb-space-4);
    border: var(--nb-border-normal) solid var(--nb-border-dark);
    background: var(--nb-bg-white);
    color: var(--nb-text-primary);
    border-radius: 0 !important;
    cursor: pointer;
    font-size: var(--nb-text-sm);
    font-weight: var(--nb-font-bold);
    transition: all var(--nb-transition-fast);
    user-select: none;
    outline: none;
    min-width: 60px;
    justify-content: center;
    text-transform: uppercase;
    box-shadow: var(--nb-shadow-sm);
}

.theme-toggle__icon {
    font-size: var(--nb-text-base);
    line-height: 1;
}

.theme-toggle__label {
    font-size: var(--nb-text-xs);
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.theme-toggle:hover {
    background-color: var(--nb-accent-green);
    color: var(--nb-text-primary);
    transform: translate(2px, 2px);
    box-shadow: var(--nb-shadow-xs);
}

.theme-toggle:focus {
    outline: 3px solid var(--nb-accent-green);
    outline-offset: 2px;
}

.theme-toggle:active {
    transform: translate(4px, 4px);
    box-shadow: none;
}

.theme-toggle--inline {
    height: 100%;
}

.theme-toggle-floating {
    position: fixed;
    top: 1rem;
    right: 1rem;
    z-index: 1100;
    display: flex;
    align-items: center;
}

.theme-toggle--floating {
    padding: var(--nb-space-3) var(--nb-space-4);
}

/* Floating variant (legacy pages and fallback) */
.language-switcher-floating {
    position: fixed;
    top: 1rem;
    right: 1rem;
}

/* Inline variant (header-embedded switcher) */
.language-switcher-inline {
    position: relative;
    top: auto;
    right: auto;
    left: auto;
    margin-left: auto;
    align-items: center;
}

/* Language Button Styles - Neubrutalism */
.lang-btn {
    padding: var(--nb-space-2) var(--nb-space-4);
    border: var(--nb-border-normal) solid var(--nb-border-dark);
    background: var(--nb-bg-white);
    color: var(--nb-text-primary);
    border-radius: 0 !important;
    cursor: pointer;
    font-size: var(--nb-text-sm);
    font-weight: var(--nb-font-bold);
    transition: all var(--nb-transition-fast);
    user-select: none;
    outline: none;
    min-width: 48px;
    text-align: center;
    position: relative;
    overflow: visible;
    text-transform: uppercase;
    box-shadow: var(--nb-shadow-sm);
}

.lang-btn:hover {
    background-color: var(--nb-accent-green);
    color: var(--nb-text-primary);
    transform: translate(2px, 2px);
    box-shadow: var(--nb-shadow-xs);
}

.lang-btn:focus {
    outline: 3px solid var(--nb-accent-green);
    outline-offset: 2px;
}

.lang-btn.active {
    background-color: var(--nb-comp);
    color: var(--nb-text-white);
    box-shadow: var(--nb-shadow-md);
}

.lang-btn:active {
    transform: translate(4px, 4px);
    box-shadow: none;
}

/* Translation Content Visibility */
.en-content, .zh-content {
    transition: opacity var(--nb-transition-fast);
}

/* Chinese language state */
.lang-zh .en-content {
    display: none;
}

.lang-zh .zh-content {
    display: inline;
}

/* English language state (default) */
body:not(.lang-zh) .en-content {
    display: inline;
}

body:not(.lang-zh) .zh-content {
    display: none;
}

/* Mobile Responsiveness - Neubrutalism */
@media (max-width: 768px) {
    .language-switcher-floating {
        top: var(--nb-space-3);
        right: var(--nb-space-3);
        padding: var(--nb-space-1);
        border-radius: 0 !important;
        gap: var(--nb-space-1);
    }

    .language-switcher-inline {
        margin: var(--nb-space-2) 0 0;
        max-width: fit-content;
        justify-content: flex-end;
        gap: var(--nb-space-1);
        padding: var(--nb-space-1);
        border-radius: 0 !important;
        min-width: auto;
        width: auto;
        flex-direction: row;
        flex-wrap: nowrap;
    }

    .language-switcher-inline .lang-btn,
    .lang-btn {
        padding: var(--nb-space-1) var(--nb-space-3);
        font-size: var(--nb-text-xs);
        min-width: 40px;
        border-radius: 0 !important;
    }

    .theme-toggle-wrapper {
        margin-left: var(--nb-space-1);
        padding-left: var(--nb-space-1);
    }

    .theme-toggle {
        padding: var(--nb-space-1) var(--nb-space-2);
        font-size: var(--nb-text-xs);
        border-radius: 0 !important;
    }

    .theme-toggle__label {
        font-size: var(--nb-text-xs);
    }

    /* Keep press-down effect on mobile */
    .lang-btn:hover {
        transform: translate(1px, 1px);
    }
}

/* Ultra-small screens (phones in portrait) */
@media (max-width: 480px) {
    .language-switcher {
        gap: var(--nb-space-1);
        padding: var(--nb-space-1);
        border-radius: 0 !important;
    }

    .lang-btn {
        padding: var(--nb-space-1) var(--nb-space-2);
        font-size: var(--nb-text-xs);
        min-width: 36px;
        border-radius: 0 !important;
        font-weight: var(--nb-font-bold);
    }

    .theme-toggle {
        padding: var(--nb-space-1) var(--nb-space-2);
        font-size: var(--nb-text-xs);
    }
}

/* Accessibility Improvements */
@media (prefers-reduced-motion: reduce) {
    .lang-btn,
    .theme-toggle,
    .en-content,
    .zh-content {
        transition: none;
    }
}

/* High contrast mode support - Neubrutalism */
@media (prefers-contrast: high) {
    .lang-btn,
    .theme-toggle {
        border-width: var(--nb-border-thick);
        font-weight: var(--nb-font-bold);
    }

    .language-switcher {
        background-color: var(--nb-bg-white);
        border: var(--nb-border-thick) solid var(--nb-border-dark);
    }
}

/* Print styles */
@media print {
    .language-switcher {
        display: none;
    }
}

/* ============================================
   HAMBURGER MENU - NEUBRUTALISM STYLE
   ============================================ */

.hamburger-menu-wrapper {
    position: relative;
    display: flex;
    align-items: center;
    margin-left: auto;
}

.hamburger-menu-floating {
    position: fixed;
    top: var(--nb-space-5);
    right: var(--nb-space-5);
    z-index: 1000;
}

.hamburger-btn {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 40px;
    height: 40px;
    background: var(--nb-bg-white);
    border: var(--nb-border-normal) solid var(--nb-border-dark);
    border-radius: 0 !important;
    cursor: pointer;
    transition: all var(--nb-transition-fast);
    box-shadow: var(--nb-shadow-md);
    z-index: 1000;
}

.hamburger-btn:hover {
    background: var(--nb-accent-green);
    border-color: var(--nb-border-dark);
    transform: translate(2px, 2px);
    box-shadow: var(--nb-shadow-sm);
}

.hamburger-line {
    width: 20px;
    height: 3px;
    background: var(--nb-border-dark);
    margin: 2px 0;
    transition: all var(--nb-transition-normal);
    border-radius: 0;
}

.hamburger-dropdown {
    position: absolute;
    top: calc(100% + var(--nb-space-2));
    right: 0;
    background: var(--nb-bg-white);
    border: var(--nb-border-normal) solid var(--nb-border-dark);
    border-radius: 0 !important;
    box-shadow: var(--nb-shadow-lg);
    padding: var(--nb-space-4);
    min-width: 160px;
    display: none;
    flex-direction: column;
    gap: var(--nb-space-2);
    z-index: 1001;
    transform: translateY(-10px);
    opacity: 0;
    transition: all var(--nb-transition-normal);
}

.hamburger-dropdown.show {
    display: flex;
    opacity: 1;
    transform: translateY(0);
}

.hamburger-dropdown .section-title {
    font-size: var(--nb-text-xs);
    font-weight: var(--nb-font-bold);
    color: var(--nb-text-secondary);
    margin-bottom: var(--nb-space-2);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.hamburger-dropdown .lang-buttons {
    display: flex;
    gap: var(--nb-space-1);
}

.hamburger-dropdown .divider {
    height: var(--nb-border-normal);
    background: var(--nb-border-dark);
    margin: var(--nb-space-1) 0;
}

.lang-btn-dropdown {
    flex: 1;
    padding: var(--nb-space-2) var(--nb-space-3);
    border: var(--nb-border-normal) solid var(--nb-border-dark);
    background: var(--nb-bg-white);
    color: var(--nb-text-primary);
    border-radius: 0 !important;
    cursor: pointer;
    font-size: var(--nb-text-sm);
    font-weight: var(--nb-font-bold);
    transition: all var(--nb-transition-fast);
    text-align: center;
    user-select: none;
    outline: none;
    text-transform: uppercase;
    box-shadow: var(--nb-shadow-sm);
}

.lang-btn-dropdown:hover {
    background: var(--nb-accent-green);
    color: var(--nb-text-primary);
    transform: translate(2px, 2px);
    box-shadow: var(--nb-shadow-xs);
}

.lang-btn-dropdown.active {
    background: var(--nb-comp);
    color: var(--nb-text-white);
    box-shadow: var(--nb-shadow-md);
}

.theme-toggle-dropdown {
    width: 100%;
    padding: var(--nb-space-3) var(--nb-space-3);
    border: var(--nb-border-normal) solid var(--nb-border-dark);
    background: var(--nb-bg-white);
    color: var(--nb-text-primary);
    border-radius: 0 !important;
    cursor: pointer;
    font-size: var(--nb-text-sm);
    font-weight: var(--nb-font-bold);
    transition: all var(--nb-transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--nb-space-2);
    user-select: none;
    outline: none;
    text-transform: uppercase;
    box-shadow: var(--nb-shadow-sm);
}

.theme-toggle-dropdown:hover {
    background: var(--nb-accent-green);
    color: var(--nb-text-primary);
    transform: translate(2px, 2px);
    box-shadow: var(--nb-shadow-xs);
}

/* ============================================
   DARK THEME SUPPORT - NEUBRUTALISM
   ============================================ */

[data-theme='dark'] .language-switcher {
    background: var(--nb-bg-white) !important;
    border-color: var(--nb-border-dark) !important;
    box-shadow: var(--nb-shadow-md) !important;
}

[data-theme='dark'] .lang-btn {
    background: var(--nb-bg-white) !important;
    border-color: var(--nb-border-dark) !important;
    color: var(--nb-text-primary) !important;
}

[data-theme='dark'] .lang-btn:hover {
    background: var(--nb-accent-green) !important;
    color: var(--nb-text-primary) !important;
}

[data-theme='dark'] .lang-btn.active {
    background: var(--nb-comp) !important;
    color: var(--nb-text-white) !important;
}

[data-theme='dark'] .theme-toggle {
    background: var(--nb-bg-white) !important;
    border-color: var(--nb-border-dark) !important;
    color: var(--nb-text-primary) !important;
}

[data-theme='dark'] .theme-toggle:hover {
    background: var(--nb-accent-green) !important;
    color: var(--nb-text-primary) !important;
}

[data-theme='dark'] .hamburger-btn {
    background: var(--nb-bg-white);
    border-color: var(--nb-border-dark);
    box-shadow: var(--nb-shadow-md);
}

[data-theme='dark'] .hamburger-btn:hover {
    background: var(--nb-accent-green);
    border-color: var(--nb-border-dark);
}

[data-theme='dark'] .hamburger-line {
    background: var(--nb-border-dark);
}

[data-theme='dark'] .hamburger-dropdown {
    background: var(--nb-bg-white);
    border-color: var(--nb-border-dark);
    box-shadow: var(--nb-shadow-lg);
}

[data-theme='dark'] .hamburger-dropdown .section-title {
    color: var(--nb-text-secondary);
}

[data-theme='dark'] .hamburger-dropdown .divider {
    background: var(--nb-border-dark);
}

[data-theme='dark'] .lang-btn-dropdown {
    border-color: var(--nb-border-dark);
    color: var(--nb-text-primary);
    background: var(--nb-bg-white);
}

[data-theme='dark'] .lang-btn-dropdown:hover {
    background: var(--nb-accent-green);
    color: var(--nb-text-primary);
}

[data-theme='dark'] .lang-btn-dropdown.active {
    background: var(--nb-comp);
    color: var(--nb-text-white);
}

[data-theme='dark'] .theme-toggle-dropdown {
    border-color: var(--nb-border-dark);
    color: var(--nb-text-primary);
    background: var(--nb-bg-white);
}

[data-theme='dark'] .theme-toggle-dropdown:hover {
    background: var(--nb-accent-green);
    color: var(--nb-text-primary);
}

/* ============================================
   MOBILE RESPONSIVE - NEUBRUTALISM
   ============================================ */

@media (max-width: 768px) {
    .hamburger-btn {
        width: 36px;
        height: 36px;
    }

    .hamburger-line {
        width: 18px;
        height: 3px;
    }

    .hamburger-dropdown {
        min-width: 140px;
        padding: var(--nb-space-3);
    }

    .lang-btn-dropdown,
    .theme-toggle-dropdown {
        padding: var(--nb-space-2) var(--nb-space-3);
        font-size: var(--nb-text-xs);
    }
}

@media (max-width: 480px) {
    .hamburger-btn {
        width: 32px;
        height: 32px;
    }

    .hamburger-line {
        width: 16px;
        height: 2px;
    }

    .hamburger-dropdown {
        min-width: 120px;
        padding: var(--nb-space-2);
        right: calc(-1 * var(--nb-space-3));
    }

    .lang-btn-dropdown,
    .theme-toggle-dropdown {
        padding: var(--nb-space-1) var(--nb-space-2);
        font-size: var(--nb-text-xs);
    }
}