:root {
    --bg-color: #f0f0f0;
    --text-color: #333333;
    --text-color-secondary: #6c757d;
    --border-color: rgba(0, 0, 0, 0.1);
    --card-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    --card-radius: 20px;
    --transition-standard: all 0.2s ease;
    --bg-gradient: linear-gradient(135deg, #F5F5F7 0%, #EEEEEE 100%);
    --primary-color: #007AFF;
    --dark-text: #2c3e50;
    --medium-text: #ecf0f1;
}

[data-theme="dark"] {
    --bg-color: #0d0d0d;
    --text-color: #ffffff;
    --text-color-secondary: #b0b0b0;
    --border-color: rgba(255, 255, 255, 0.12);
    --card-shadow: 0 8px 24px rgba(0, 0, 0, 0.8);
    --bg-gradient: linear-gradient(135deg, #121212 0%, #0d0d0d 100%);
    --dark-text: #ffffff;
    --medium-text: #e5e5e5;
}

@import url('https://fonts.googleapis.com/css2?family=Alegreya:wght@400;500;700&display=swap');

@font-face {
    font-family: 'Dudu Calligraphy';
    src: url('font/Dudu_Calligraphy.ttf') format('truetype');
    font-weight: normal;
    font-style: normal;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: Roboto, Arial, sans-serif;
    margin: 0;
    padding: 0;
    color: var(--text-color);
    min-height: 100vh;
    position: relative;
    line-height: 1.7;
    overflow-x: hidden;
    font-size: 17px;
    background: var(--bg-color);
    direction: ltr;
}

/* RTL Support */
body.rtl-mode {
    direction: rtl;
}

body.rtl-mode .header-button i,
body.rtl-mode .language-button i,
body.rtl-mode .visit-button i {
    margin-right: 0;
    margin-left: 0.5rem;
}

body.rtl-mode .site-icon,
body.rtl-mode .description-icon {
    margin-right: 0;
    margin-left: 1rem;
}

body.rtl-mode .badge {
    margin-left: 0;
    margin-right: 0.75rem;
}

body.rtl-mode .description-badge {
    margin-left: 0;
    margin-right: 1rem;
}

body.rtl-mode .language-dropdown {
    right: auto;
    left: 0;
}

body.rtl-mode .footer-section:first-child .footer-title::after {
    left: -1.5rem;
    width: calc(100% + 3rem);
    transform: none;
}

body.rtl-mode .description-text {
    text-align: right;
}

/* Keep footer in LTR */
body.rtl-mode footer,
body.rtl-mode .footer-content,
body.rtl-mode .footer-section {
    direction: ltr;
}

body.rtl-mode .nav-controls {
    direction: ltr;
}

/* Dark mode body background */
[data-theme="dark"] body {
    background: #000000;
}

/* Invert black icons to white in dark mode */
[data-theme="dark"] .invert-in-dark {
    filter: invert(1);
    transition: filter 0.2s ease;
}

.background-gradient {
    display: none;
}

.noise-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0.05;
    z-index: -1;
}

/* Header Styles */
header {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    gap: 1rem;
    padding: 1.5rem 2rem;
    background: var(--bg-color);
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--card-shadow);
    position: sticky;
    top: 0;
    z-index: 100;
}

.logo {
    display: flex;
    align-items: center;
    gap: 1rem;
    position: relative;
}

.logo h1 {
    font-family: 'Alegreya', serif;
    font-weight: 400;
    font-size: 1.85rem;
    color: var(--text-color);
    background: none;
    border: 1.5px solid #000000;
    border-radius: 0;
    padding: 0.7rem 1.3rem;
    cursor: pointer;
    transition: filter 0.2s ease;
    display: inline-block;
    text-decoration: none;
    margin: 0;
    position: relative;
    text-shadow: none;
}

[data-theme="dark"] .logo h1 {
    border-color: rgba(255, 255, 255, 0.2);
}

/* Premium Toggle Switch with Layered Animation */
.toggle-switch {
    position: relative;
    width: 50px;
    height: 28px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
    transition: var(--transition-standard);
    overflow: visible;
}

.toggle-switch:active {
    transform: scale(0.95);
}

.switch-track {
    position: relative;
    width: 100%;
    height: 100%;
    background: #e0e0e0;
    border-radius: 14px;
    border: 1px solid rgba(0, 0, 0, 0.1);
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow:
        inset 0 2px 4px rgba(0, 0, 0, 0.1),
        0 1px 2px rgba(0, 0, 0, 0.05);
}

.switch-thumb {
    position: absolute;
    top: 2px;
    left: 2px;
    width: 22px;
    height: 22px;
    background: #ffffff;
    border-radius: 50%;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    transform: translateX(0);
    box-shadow:
        0 2px 4px rgba(0, 0, 0, 0.2),
        0 1px 2px rgba(0, 0, 0, 0.15);
}

/* Dark Mode Toggle - Active state in dark theme */
[data-theme="dark"] .toggle-switch .switch-track {
    background: #2a2a2a;
    border-color: rgba(255, 255, 255, 0.2);
    box-shadow:
        inset 0 2px 4px rgba(0, 0, 0, 0.3),
        0 1px 2px rgba(0, 0, 0, 0.2);
}

[data-theme="dark"] .toggle-switch .switch-thumb {
    background: #ff3a4a;
    transform: translateX(22px);
    box-shadow:
        0 2px 4px rgba(255, 58, 74, 0.4),
        0 1px 2px rgba(0, 0, 0, 0.15);
}

/* Hover effects */
.toggle-switch:hover .switch-thumb {
    transform: translateX(0) scale(1.08);
    box-shadow:
        0 2px 6px rgba(0, 0, 0, 0.3),
        0 1px 3px rgba(0, 0, 0, 0.2);
}

[data-theme="dark"] .toggle-switch:hover .switch-thumb {
    transform: translateX(22px) scale(1.08);
    box-shadow:
        0 2px 6px rgba(255, 58, 74, 0.5),
        0 1px 3px rgba(0, 0, 0, 0.2);
}

/* Active/pressed state */
.toggle-switch:active .switch-thumb {
    transform: translateX(0) scale(0.92);
    transition: all 0.1s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="dark"] .toggle-switch:active .switch-thumb {
    transform: translateX(22px) scale(0.92);
    transition: all 0.1s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Ripple effect on track during transition */
@keyframes track-pulse {
    0% { opacity: 1; }
    50% { opacity: 0.8; }
    100% { opacity: 1; }
}

.toggle-switch:active .switch-track {
    animation: track-pulse 0.3s ease;
}

.header-buttons {
    display: flex;
    gap: 0.75rem;
    justify-content: center;
}

.header-button {
    display: flex;
    align-items: center;
    padding: 0.7rem 1.3rem;
    border-radius: var(--card-radius);
    font-weight: 500;
    font-size: 1rem;
    border: 1px solid var(--border-color);
    cursor: pointer;
    transition: var(--transition-standard);
    background: var(--bg-color);
    color: var(--text-color);
}

.header-button i {
    margin-right: 0.5rem;
    font-size: 1rem;
}

.header-button:hover {
    opacity: 0.8;
}

.header-button:active {
    transform: scale(0.98);
}

.language-selector {
    grid-column: 3;
    position: relative;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    justify-content: flex-end;
}

.settings-button,
.header-icon-button {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0.5rem;
    width: 36px;
    height: 36px;
    border-radius: var(--card-radius);
    font-weight: 500;
    font-size: 1rem;
    border: 1px solid var(--border-color);
    cursor: pointer;
    background: var(--bg-color);
    color: var(--text-color);
    transition: var(--transition-standard);
}

.settings-button i,
.header-icon-button i {
    font-size: 1rem;
}

.settings-button:hover,
.header-icon-button:hover {
    opacity: 0.8;
}

.settings-button:active,
.header-icon-button:active {
    transform: scale(0.98);
}

/* Settings Panel Overlay */
.settings-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    z-index: 998;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.2s ease, visibility 0.2s ease, backdrop-filter 0.2s ease;
}

.settings-overlay.active {
    opacity: 1;
    visibility: visible;
}

/* Settings Panel */
.settings-panel {
    position: fixed;
    top: 0;
    right: -400px;
    width: 400px;
    height: 100vh;
    background: var(--bg-color);
    border-left: 1px solid var(--border-color);
    box-shadow: -4px 0 20px rgba(0, 0, 0, 0.15);
    z-index: 999;
    transition: right 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    overflow-y: auto;
}

.settings-panel.active {
    right: 0;
}

.settings-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.5rem 2rem;
    border-bottom: 1px solid var(--border-color);
}

.settings-header h2 {
    font-family: 'Dudu Calligraphy', Roboto, Arial, sans-serif;
    font-size: 1.5rem;
    font-weight: 500;
    color: var(--text-color);
    margin: 0;
}

.close-settings {
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--text-color);
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 50%;
    transition: var(--transition-standard);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
}

.close-settings:hover {
    background: rgba(0, 0, 0, 0.05);
}

[data-theme="dark"] .close-settings:hover {
    background: rgba(255, 255, 255, 0.1);
}

.close-settings:active {
    transform: scale(0.95);
}

.settings-content {
    padding: 2rem;
}

.setting-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.5rem;
    background: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: var(--card-radius);
    margin-bottom: 1rem;
    transition: var(--transition-standard);
}

.setting-label {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-size: 1.1rem;
    font-weight: 500;
    color: var(--text-color);
}

.setting-label i {
    font-size: 1.2rem;
    color: var(--text-color-secondary);
}

.default-language-button {
    display: flex;
    align-items: center;
    padding: 0.7rem 1.3rem;
    border-radius: var(--card-radius);
    font-weight: 500;
    font-size: 1rem;
    border: 1px solid var(--border-color);
    cursor: pointer;
    background: var(--bg-color);
    color: var(--text-color);
    transition: var(--transition-standard);
}

.visit-all-icon-button {
    flex-shrink: 0;
}

.default-language-button:hover {
    opacity: 0.8;
}

.default-language-button:active {
    transform: scale(0.98);
}

.language-button {
    display: flex;
    align-items: center;
    padding: 0.7rem 1.3rem;
    border-radius: var(--card-radius);
    font-weight: 500;
    font-size: 1rem;
    border: 1px solid var(--border-color);
    cursor: pointer;
    transition: var(--transition-standard);
    background: var(--bg-color);
    color: var(--text-color);
}

.language-button i {
    margin-right: 0.5rem;
    font-size: 1rem;
}

.language-button:hover {
    opacity: 0.8;
}

.language-button:active {
    transform: scale(0.98);
}

.language-dropdown {
    display: none;
    position: absolute;
    top: calc(100% + 0.5rem);
    right: 0;
    background: #f0f0f0;
    border: 1px solid rgba(0, 0, 0, 0.1);
    border-radius: var(--card-radius);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    min-width: 180px;
    z-index: 1000;
    overflow: hidden;
}

.language-dropdown.show {
    display: block;
}

.language-option {
    padding: 0.75rem 1rem;
    cursor: pointer;
    transition: var(--transition-standard);
    color: #333333;
    font-size: 1rem;
    font-weight: normal;
}

.language-option.active {
    font-weight: bold;
}

.language-option:hover {
    background: rgba(0, 0, 0, 0.05);
}

.language-option:active {
    transform: scale(0.98);
}

.app-count {
    color: var(--text-color-secondary);
    font-size: 1.1rem;
}

/* Main Content */
main {
    max-width: 980px;
    margin: 0 auto;
    padding: 24px 16px;
}

/* List View Design */
.apps-list {
    display: flex;
    flex-direction: column;
    gap: 32px;
}

.list-section {
    margin-bottom: 16px;
}

.list-section-header {
    font-size: 22px;
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: 16px;
    padding: 0 16px;
}

.list-group {
    background: var(--bg-color);
    border-radius: var(--card-radius);
    overflow: hidden;
    border: 1px solid var(--border-color);
}

.list-item {
    position: relative;
    cursor: pointer;
    transition: background 0.15s cubic-bezier(0.4, 0, 0.2, 1);
    will-change: background;
}

.list-item+.list-item {
    border-top: 0.5px solid var(--border-color);
}

.list-item:hover {
    background: rgba(0, 0, 0, 0.02);
}

[data-theme="dark"] .list-item:hover {
    background: rgba(255, 255, 255, 0.05);
}

.list-item:active {
    background: rgba(0, 0, 0, 0.05);
}

[data-theme="dark"] .list-item:active {
    background: rgba(255, 255, 255, 0.08);
}

.list-item-content {
    display: flex;
    align-items: center;
    padding: 12px 16px;
    gap: 12px;
}

.list-item.expanded .list-item-content {
    border-bottom: 0.5px solid var(--border-color);
    padding-bottom: 12px;
    margin-bottom: 12px;
}

.list-icon {
    width: 40px;
    height: 40px;
    border-radius: 8px;
    object-fit: contain;
    flex-shrink: 0;
}

.brain-side-icon {
    width: 48px;
    height: 48px;
}

[data-theme="dark"] .list-item[data-index="7"] .list-icon,
[data-theme="dark"] .list-item[data-index="1"] .list-icon {
    filter: invert(1);
}

.list-text {
    flex: 1;
    min-width: 0;
}

.list-title {
    font-family: 'Dudu Calligraphy', Roboto, Arial, sans-serif;
    font-weight: 500;
    font-size: 1.3rem;
    color: var(--text-color);
    margin-bottom: 2px;
}

.list-subtitle {
    font-size: 0.9rem;
    color: var(--text-color);
}

.list-chevron {
    font-size: 14px;
    color: var(--text-color-secondary);
    flex-shrink: 0;
    transition: transform 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    will-change: transform;
}

.list-item.expanded .list-chevron {
    transform: rotate(180deg);
}

.list-item-detail {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    will-change: max-height;
}

.list-item.expanded .list-item-detail {
    max-height: 500px;
}

.detail-description {
    padding: 0 16px 16px;
    font-size: 1.1rem;
    line-height: 1.7;
    color: var(--text-color);
    margin: 0;
    cursor: text;
    user-select: text;
    -webkit-user-select: text;
    -moz-user-select: text;
    -ms-user-select: text;
}

.detail-button {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin: 0 16px 16px;
    padding: 7px 16px;
    background: var(--bg-color);
    color: var(--text-color);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    font-size: 14px;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.3s ease;
}

.detail-button:active {
    opacity: 0.7;
    transition: opacity 0.1s ease;
}

.detail-button .icon {
    width: 18px;
    height: 18px;
    stroke: currentColor;
    stroke-width: 2;
    fill: none;
    flex-shrink: 0;
    display: inline-block;
}

/* Hide grid view elements and carousel description components */
.grid-view,
.website,
.website-header,
.site-icon,
.site-name,
.badge,
.action-buttons,
.visit-button,
.descriptions-container,
.nav-controls {
    display: none !important;
}

/* Website Cards */
.website {
    background: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: var(--card-radius);
    padding: 1.5rem;
    box-shadow: var(--card-shadow);
    transition: var(--transition-standard);
    cursor: pointer;
    display: flex;
    flex-direction: column;
    position: relative;
    overflow: hidden;
}

.website::before {
    display: none;
}

.website::after {
    display: none;
}

.website:hover {
    border-color: var(--primary-color);
    box-shadow: 0 4px 12px rgba(0, 122, 255, 0.15);
    transform: translateY(-2px);
}

.website-header {
    display: flex;
    align-items: flex-start;
    width: 100%;
    margin-bottom: 1rem;
}

.site-icon {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    object-fit: contain;
    margin-right: 1rem;
    background-color: transparent;
    padding: 6px;
    transition: var(--transition-standard);
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.1));
}

.website:hover .site-icon {
    transform: scale(1.1);
}

/* Brain Side icon - larger size */
.brain-side-icon.site-icon {
    width: 56px;
    height: 56px;
}

.brain-side-icon.description-icon {
    width: 72px;
    height: 72px;
}

/* Center align Brain Side card header */
.website[data-name="brain side"] .website-header {
    align-items: center;
}

/* Dark mode icon fixes for Dictionary Lens and Reader */
[data-theme="dark"] .website[data-name="dictionary lens"] .site-icon,
[data-theme="dark"] .description-content[data-index="7"] .description-icon {
    filter: invert(1) drop-shadow(0 2px 4px rgba(255, 255, 255, 0.1));
}

[data-theme="dark"] .website[data-name="reader"] .site-icon,
[data-theme="dark"] .description-content[data-index="1"] .description-icon {
    filter: invert(1) drop-shadow(0 2px 4px rgba(255, 255, 255, 0.1));
}

.site-name {
    font-family: 'Dudu Calligraphy', Roboto, Arial, sans-serif;
    font-weight: 500;
    font-size: 1.3rem;
    color: var(--text-color);
    margin-bottom: 0.25rem;
    flex: 1;
}

.badge {
    font-size: 0.75rem;
    font-weight: 500;
    padding: 0.25rem 0.5rem;
    border-radius: 20px;
    background: #e0e0e0;
    color: #333333;
    margin-left: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

[data-theme="dark"] .badge {
    background: #1a1a1a;
    color: #ffffff;
    border: 1px solid rgba(255, 255, 255, 0.15);
}

.action-buttons {
    display: flex;
    margin-top: auto;
    gap: 0.75rem;
}

.visit-button {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0.7rem 1.3rem;
    border-radius: var(--card-radius);
    text-decoration: none;
    font-weight: 500;
    font-size: 1rem;
    transition: var(--transition-standard);
    flex: 1;
    background: var(--bg-color);
    border: 1px solid var(--border-color);
    color: var(--text-color);
}

.visit-button i {
    margin-right: 0.5rem;
    font-size: 0.9rem;
}

.visit-button:hover {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(0, 122, 255, 0.1);
}

.visit-button:active {
    opacity: 0.8;
}

/* Descriptions Section */
.descriptions-section {
    max-width: 800px;
    margin: 3rem auto;
    padding: 0 1.0rem;
    text-align: center;
    position: relative;
}

.descriptions-container {
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: var(--card-radius);
    padding: 2rem;
    box-shadow: var(--card-shadow);
    position: relative;
    min-height: 450px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    overflow: visible;
}

.description-content {
    display: none;
    opacity: 0;
    transition: opacity 1s ease;
}

.description-content.active {
    display: block;
    opacity: 1;
}

.description-header {
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.description-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    object-fit: contain;
    margin-right: 1rem;
    filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.1));
}

.description-title {
    font-family: 'Dudu Calligraphy', serif;
    font-size: 1.8rem;
    font-weight: 500;
    color: var(--text-color);
    margin: 0;
}

.description-badge {
    font-size: 0.8rem;
    font-weight: 500;
    padding: 0.3rem 0.6rem;
    border-radius: 20px;
    background: #e0e0e0;
    color: #333333;
    margin-left: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

[data-theme="dark"] .description-badge {
    background: #1a1a1a;
    color: #ffffff;
    border: 1px solid rgba(255, 255, 255, 0.15);
}

.description-text {
    font-size: 1.1rem;
    line-height: 1.7;
    color: var(--text-color);
    margin-bottom: 2rem;
    text-align: left;
}

.description-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

.nav-controls {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    margin-top: 1rem;
}

.nav-button {
    background: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition-standard);
    color: var(--text-color);
    font-size: 1.2rem;
}

.nav-button:hover {
    border-color: var(--border-color);
    transform: scale(1.05);
}

.nav-button:active:not(:disabled) {
    transform: scale(0.95);
    transition: transform 0.15s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.nav-button:disabled {
    opacity: 0.3;
    cursor: not-allowed;
    border-color: var(--border-color);
}

.nav-info {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-color-secondary);
    font-size: 0.9rem;
}

footer {
    background: linear-gradient(rgba(255, 255, 255, 0.00), rgba(255, 255, 255, 0.00)), url('images/FlagofUSA.png');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    width: min(890px, calc(100% - 2rem));
    padding: 3.12rem 2.04rem 2.14rem;
    margin: 1.85rem auto 2rem;
    border-top: 1px solid rgba(226, 232, 240, 0.8);
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    justify-content: center;
    height: auto;
    aspect-ratio: 1.9 / 1;
    max-height: 618px;
}

footer.rtl-footer {
    background: linear-gradient(rgba(255, 255, 255, 0.00), rgba(255, 255, 255, 0.00)), url('images/FlagofIsrael.png');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

/* Language Toggle - Book Page Flip */
.rtl-toggle-circle {
    position: relative;
    width: 24px;
    height: 24px;
    margin: 15px auto;
    border-radius: 50%;
    background: #f5f5f7;
    border: 2px solid #f5f5f7;
    box-shadow:
        0 2px 8px rgba(0, 0, 0, 0.15),
        inset 0 1px 2px rgba(0, 0, 0, 0.05);
    cursor: pointer;
    z-index: 1000;
    transition: all 1.67s cubic-bezier(0.4, 0, 0.2, 1);
    user-select: none;
    -webkit-tap-highlight-color: transparent;
    overflow: visible;
    perspective: 600px;
    transform-style: preserve-3d;
}

.rtl-toggle-circle::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 2px;
    height: 55%;
    background: #1d1d1f;
    transform: translate(-50%, -50%);
    border-radius: 1px;
    transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 0 2px rgba(0, 0, 0, 0.3);
}

.rtl-toggle-circle::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 18%;
    width: 6px;
    height: 2px;
    background: #1d1d1f;
    transform: translateY(-50%);
    border-radius: 1px;
    transition: all 2s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 0 2px rgba(0, 0, 0, 0.3);
}

.rtl-toggle-circle:hover {
    background: #e8e8ed;
    border-color: #c7c7cc;
    box-shadow:
        0 4px 12px rgba(0, 0, 0, 0.2),
        inset 0 1px 2px rgba(0, 0, 0, 0.05);
}

.rtl-toggle-circle:focus {
    outline: none;
}

.rtl-toggle-circle:active {
    transform: scale(0.98);
    transition: all 0.1s ease;
}

.rtl-toggle-circle.active::before {
    transform: translate(-50%, -50%) rotateZ(360deg);
}

.rtl-toggle-circle.active::after {
    left: auto;
    right: 18%;
    transform: translateY(-50%) rotateZ(180deg);
}

[data-theme="dark"] .rtl-toggle-circle {
    background: #f5f5f7;
    border-color: #f5f5f7;
    box-shadow:
        0 2px 8px rgba(0, 0, 0, 0.15),
        inset 0 1px 2px rgba(0, 0, 0, 0.05);
}

[data-theme="dark"] .rtl-toggle-circle:hover {
    background: #e8e8ed;
    border-color: #c7c7cc;
    box-shadow:
        0 4px 16px rgba(0, 122, 255, 0.4),
        inset 0 1px 3px rgba(255, 255, 255, 0.3);
}

[data-theme="dark"] footer {
    border-top: none;
}

.footer-section {
    backdrop-filter: saturate(1.1) blur(2px);
}

.footer-section,
.footer-section p,
.footer-title {
    color: #111827;
}

[data-theme="dark"] .footer-section,
[data-theme="dark"] .footer-section p,
[data-theme="dark"] .footer-title {
    color: #f9fafb;
}

footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.65);
    z-index: 1;
}

footer::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 50% 50%,
            rgba(255, 255, 255, 0.1) 0%,
            rgba(255, 255, 255, 0.05) 70%,
            transparent 100%);
    pointer-events: none;
    z-index: 1;
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 0.9fr 0.9fr;
    gap: 1.4rem;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.05rem;
    align-items: start;
    position: relative;
    z-index: 2;
}

.footer-section {
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    gap: 0.64rem;
    text-align: center;
    margin-bottom: 0;
    min-height: 0;
    background: rgba(255, 255, 255, 0.16);
    padding: 0.96rem 1.08rem 1rem;
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.24);
    box-shadow: 0 18px 32px rgba(15, 23, 42, 0.14);
    backdrop-filter: blur(16px) saturate(135%);
    transition: var(--transition-standard);
}

.footer-section:hover {
    box-shadow: 0 22px 36px rgba(15, 23, 42, 0.16);
    background: rgba(255, 255, 255, 0.18);
}

.footer-section:first-child {
    text-align: left;
    min-height: 146px;
}

.footer-section:first-child p:not(.footer-title) {
    line-height: 1.42;
    font-size: 0.94rem;
    margin: 0;
    text-align: left;
}

.footer-section:first-child .footer-title {
    text-align: left;
}

.footer-section:first-child .footer-title::after {
    left: 0;
    width: 100%;
    transform: none;
}

.footer-title {
    font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Segoe UI", sans-serif;
    font-weight: 600;
    font-size: 1.12rem;
    color: var(--dark-text);
    line-height: 1.2;
    letter-spacing: -0.02em;
    margin-bottom: 0.08rem;
    position: relative;
    display: block;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

.footer-title::after {
    content: '';
    display: block;
    position: relative;
    left: 0;
    bottom: auto;
    width: 100%;
    height: 1px;
    margin-top: 0.68rem;
    background: rgba(255, 255, 255, 0.68);
    border-radius: 999px;
    box-shadow: none;
}

.tool-links {
    display: flex;
    justify-content: center;
    gap: 0.76rem;
    margin-top: 0.18rem;
    flex-wrap: nowrap;
    width: 100%;
}

.tool-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    color: #1f2937;
    text-decoration: none;
    min-height: 56px;
    font-size: 1.02rem;
    font-weight: 500;
    padding: 0 1.32rem;
    flex: 1 1 0;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.08);
    text-shadow: none;
    box-shadow: none;
    border: 1px solid rgba(255, 255, 255, 0.26);
    transition: all 0.24s ease;
    -webkit-tap-highlight-color: transparent;
}

.tool-links a i {
    margin-right: 0.5rem;
}

.ai-tool-button {
    padding: 0 1.32rem !important;
    font-size: 1.02rem !important;
}

.ai-logo {
    width: 18px;
    height: 18px;
    margin-right: 0.42rem;
    object-fit: contain;
    vertical-align: middle;
}

.tool-links a:hover {
    background: rgba(255, 255, 255, 0.16);
    box-shadow: 0 10px 18px rgba(15, 23, 42, 0.12);
    border: 1px solid rgba(255, 255, 255, 0.34);
    color: inherit;
    transform: translateY(-1px);
}

.tool-links a:focus {
    outline: none;
}

.github-link {
    display: flex;
    align-items: center;
    justify-content: center;
    color: #1f2937;
    text-decoration: none;
    min-height: 56px;
    width: 100%;
    font-size: 1.02rem;
    font-weight: 500;
    padding: 0 1.32rem;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.08);
    text-shadow: none;
    box-shadow: none;
    border: 1px solid rgba(255, 255, 255, 0.26);
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    -webkit-tap-highlight-color: transparent;
}

.github-link i {
    margin-right: 0.5rem;
}

.github-link:hover {
    background: rgba(255, 255, 255, 0.16);
    box-shadow: 0 10px 18px rgba(15, 23, 42, 0.12);
    border: 1px solid rgba(255, 255, 255, 0.34);
    color: inherit;
    transform: translateY(-1px);
}

.github-link:focus {
    outline: none;
}

.copyright {
    max-width: 1200px;
    margin: 1.7rem auto 0;
    padding: 0 1.75rem;
    text-align: center;
    position: relative;
    z-index: 2;
}

.copyright p {
    color: #6E6E73;
    font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", sans-serif;
    font-size: 0.9rem;
    font-weight: 500;
    letter-spacing: -0.01em;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.08);
    background: rgba(255, 255, 255, 0.12);
    padding: 0.72rem 1.4rem;
    border-radius: 999px;
    display: inline-block;
    border: 1px solid rgba(255, 255, 255, 0.22);
    box-shadow: 0 14px 28px rgba(15, 23, 42, 0.12);
}

/* Responsive Styles */
@media (max-width: 992px) {
    header {
        flex-direction: row;
        flex-wrap: wrap;
        padding: 1rem;
        gap: 1rem;
        align-items: center;
    }

    .logo {
        flex: 1;
        order: 1;
    }

    .header-buttons {
        order: 2;
        flex: none;
        gap: 0.5rem;
    }

    .language-selector {
        order: 3;
    }
}

@media (max-width: 768px) {

    body {
        padding-top: env(safe-area-inset-top);
        padding-bottom: env(safe-area-inset-bottom);
        line-height: 1.5;
    }

    header {
        padding: max(1rem, env(safe-area-inset-top)) 1rem 1rem;
        box-shadow: 0 1px 0 0 rgba(0, 0, 0, 0.05);
    }

    .logo h1 {
        font-size: 1.5rem;
        padding: 0.6rem 1.1rem;
    }

    [data-theme="dark"] .logo h1 {
        border-color: rgba(255, 255, 255, 0.2);
    }

    .toggle-switch {
        width: 45px;
        height: 26px;
    }

    .switch-thumb {
        width: 20px;
        height: 20px;
    }

    [data-theme="dark"] .switch-thumb {
        transform: translateX(19px);
    }

    .header-buttons {
        display: flex;
        flex-direction: row;
        gap: 0.75rem;
    }

    .header-button {
        padding: 0.7rem 0.9rem;
        min-width: 48px;
        min-height: 48px;
        justify-content: center;
    }

    .header-button span {
        display: none;
    }

    .header-button i {
        margin-right: 0;
        font-size: 1.3rem;
    }

    .descriptions-section {
        padding: 0 1rem 2rem;
        margin-top: 2rem;
    }

    .descriptions-container {
        padding: 2rem 1.25rem;
        height: auto;
        min-height: 520px;
        max-height: 65vh;
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
        box-shadow: 0 2px 16px rgba(0, 0, 0, 0.08);
        border: 0.5px solid var(--border-color);
    }

    .description-header {
        flex-direction: column;
        text-align: center;
        margin-bottom: 1rem;
    }

    .description-icon {
        margin-right: 0;
        margin-bottom: 0.5rem;
    }

    .description-badge {
        margin-left: 0;
        margin-top: 0.5rem;
    }

    .description-text {
        margin-bottom: 1.5rem;
        overflow-y: auto;
        max-height: none;
        line-height: 1.5;
        -webkit-overflow-scrolling: touch;
    }

    .description-actions {
        margin-bottom: 1rem;
    }

    .description-actions .visit-button {
        padding: 0.85rem 1.5rem;
        font-size: 1.05rem;
        min-height: 50px;
        border-radius: 14px;
        font-weight: 600;
        transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    }

    .description-actions .visit-button:active {
        transform: scale(0.96);
        opacity: 0.85;
    }

    .nav-controls {
        margin-top: 1.25rem;
        padding-top: 1.25rem;
        gap: 1.5rem;
        border-top: 0.5px solid var(--border-color);
    }

    .nav-button {
        width: 56px;
        height: 56px;
        font-size: 1.3rem;
        border-radius: 50%;
        transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
        box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    }

    .nav-button:active:not(:disabled) {
        transform: scale(0.92);
        box-shadow: 0 1px 4px rgba(0, 0, 0, 0.1);
    }

    .nav-info {
        font-size: 1rem;
        font-weight: 600;
        min-width: 60px;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 1.25rem;
    }

    .footer-section {
        margin-bottom: 1rem;
        padding: 1.25rem 1rem;
        border-radius: 16px;
    }
}

@media (min-width: 769px) {
    footer {
        padding: 0;
        width: min(836px, calc(100% - 2rem));
        max-height: 582px;
        margin: 1.75rem auto 1.7rem;
    }

    .footer-content {
        position: absolute;
        top: calc(100% * 2.05 / 13);
        left: 50%;
        transform: translateX(-50%);
        width: calc(100% - 3.9rem);
        max-width: 808px;
        grid-template-columns: 0.78fr 1.08fr 0.86fr;
        gap: 1.26rem;
        margin: 0;
        padding: 0;
    }

    .footer-section {
        gap: 0.68rem;
        padding: 1rem 1.16rem 1.06rem;
        border-radius: 20px;
    }

    .footer-section:first-child {
        max-width: 232px;
        min-height: 146px;
        justify-self: start;
    }

    .footer-section:first-child p:not(.footer-title) {
        max-width: 16ch;
        font-size: 1rem;
        line-height: 1.42;
    }

    .footer-title {
        font-size: 1.22rem;
    }

    .footer-title::after {
        margin-top: 0.62rem;
    }

    .tool-links {
        gap: 0.68rem;
    }

    .tool-links a,
    .github-link {
        min-height: 52px;
        font-size: 0.97rem;
        padding: 0 1.15rem;
    }

    .ai-tool-button {
        padding: 0 1.15rem !important;
        font-size: 1.2rem !important;
    }

    .ai-logo {
        width: 20px;
        height: 20px;
        margin-right: 0.5rem;
    }

    .copyright {
        position: absolute;
        left: 50%;
        bottom: calc(100% * 1.6 / 13);
        transform: translateX(-50%);
        width: fit-content;
        max-width: calc(100% - 4.4rem);
        margin: 0;
        padding: 0;
    }

    .copyright p {
        font-size: 0.87rem;
        padding: 0.62rem 1.18rem;
    }

    .footer-section,
    .footer-section p,
    .footer-title {
        color: rgba(255, 255, 255, 0.95) !important;
        text-shadow: 0 1px 3px rgba(0, 0, 0, 0.24);
    }

    .copyright p {
        color: rgba(255, 255, 255, 0.95) !important;
        text-shadow: 0 1px 3px rgba(0, 0, 0, 0.24);
    }

    .tool-links a,
    .github-link {
        color: rgba(255, 255, 255, 0.92);
    }

    .github-link {
        font-size: 1.2rem;
    }

    .github-link i {
        font-size: 20px;
        margin-right: 0.5rem;
    }
}

@media (max-width: 768px) {

    main#app-grid {
        display: none !important;
    }

    footer {
        background-image: none !important;
        background: var(--bg-color) !important;
        width: auto;
        padding: 2.5rem 1rem max(1.5rem, env(safe-area-inset-bottom));
        margin: 0;
        aspect-ratio: auto !important;
        height: auto !important;
        max-height: none !important;
        border-top: 0.5px solid var(--border-color) !important;
    }

    footer::before {
        background: none;
    }

    footer::after {
        background: none;
    }

    .footer-content {
        padding: 0 0.5rem;
    }

    .footer-section {
        text-align: center !important;
    }

    [data-theme="dark"] .footer-section {
        background: rgba(30, 30, 32, 0.85) !important;
        border: 1px solid rgba(60, 60, 67, 0.6) !important;
    }

    .footer-section:first-child {
        text-align: center !important;
    }

    .footer-section:first-child p:not(.footer-title) {
        text-align: center !important;
    }

    .footer-section:first-child .footer-title {
        text-align: center !important;
    }

    .footer-section:first-child .footer-title::after {
        left: 0;
        width: 100%;
        transform: none;
    }

    .footer-title {
        color: #1f2937 !important;
        text-shadow: none !important;
    }

    [data-theme="dark"] .footer-title {
        color: #f9fafb !important;
        text-shadow: none !important;
    }

    .footer-section p {
        color: #374151 !important;
        text-shadow: none !important;
    }

    [data-theme="dark"] .footer-section p {
        color: #e5e7eb !important;
        text-shadow: none !important;
    }

    .tool-links {
        flex-direction: column;
        gap: 0.875rem;
        align-items: stretch;
    }

    .tool-links a {
        padding: 0.875rem 1.25rem;
        font-size: 1.05rem;
        min-height: 50px;
        border-radius: 14px;
        font-weight: 600;
    }

    .github-link {
        padding: 0.875rem 1.25rem;
        font-size: 1.05rem;
        min-height: 50px;
        border-radius: 14px;
        font-weight: 600;
    }

    .tool-links a,
    .github-link {
        background: linear-gradient(135deg, #ffffff 0%, #f8fafc 100%) !important;
        color: #1f2937 !important;
        box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
        border: 0.5px solid rgba(226, 232, 240, 0.8);
        transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    }

    [data-theme="dark"] .tool-links a,
    [data-theme="dark"] .github-link {
        background: linear-gradient(135deg, #2c2c2e 0%, #1c1c1e 100%) !important;
        color: #f9fafb !important;
        border: 1px solid rgba(60, 60, 67, 0.6);
    }

    .tool-links a:active,
    .github-link:active {
        transform: scale(0.96);
        box-shadow: 0 1px 4px rgba(0, 0, 0, 0.08);
    }

    .copyright p {
        color: #6E6E73 !important;
        text-shadow: none !important;
        font-size: 0.875rem;
        padding: 0.75rem 1.25rem;
        background: rgba(255, 255, 255, 0.6) !important;
        border-radius: 20px;
    }

    [data-theme="dark"] .copyright p {
        color: #a1a1a6 !important;
        background: rgba(30, 30, 32, 0.85) !important;
        border: 1px solid rgba(60, 60, 67, 0.6);
    }

    .rtl-toggle-circle {
        display: none !important;
    }
}

/* Snowflake animation */
.snowflake {
    position: fixed;
    top: -20px;
    color: rgba(100, 120, 140, 0.85);
    pointer-events: none;
    text-shadow:
        0 0 3px rgba(80, 100, 120, 0.6),
        0 0 6px rgba(60, 80, 100, 0.4);
    animation: fall linear forwards;
    z-index: 9999;
    filter: blur(0.3px);
}

[data-theme="dark"] .snowflake {
    color: rgba(220, 235, 255, 0.7);
    text-shadow:
        0 0 8px rgba(180, 210, 255, 0.4),
        0 0 15px rgba(180, 210, 255, 0.2);
    filter: blur(0.5px);
}

@keyframes fall {
    0% {
        transform: translateY(0) rotate(0deg);
        opacity: 0;
    }

    10% {
        opacity: 1;
    }

    90% {
        opacity: 1;
    }

    100% {
        transform: translateY(100vh) rotate(360deg);
        opacity: 0;
    }
}