/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #0066CC;
    --primary-dark: #0052A3;
    --primary-light: #3385D6;
    --bg-primary: #FFFFFF;
    --bg-secondary: #F5F7FA;
    --text-primary: #1A1A1A;
    --text-secondary: #4A5568;
    --text-muted: #718096;
    --border-color: rgba(102, 126, 234, 0.2);
    --success-color: #10B981;
    --warning-color: #F59E0B;
    --error-color: #EF4444;
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-xxl: 4rem;
    --font-family: 'Lato', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 2rem;
    --font-size-4xl: 2.5rem;
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 8px 16px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 15px 30px rgba(0, 0, 0, 0.2);
    --transition-base: 0.3s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    background: #FFFFFF;
    color: var(--text-primary);
    line-height: 1.6;
    padding-top: 62px;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* Navigation */
.navbar {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.98) 0%, rgba(248, 250, 255, 0.95) 100%);
    border-bottom: 1px solid var(--border-color);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    backdrop-filter: blur(20px) saturate(180%);
    box-shadow: 0 8px 32px rgba(102, 126, 234, 0.1);
    width: 100%;
}

.nav-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 0;
    min-height: 71px;
}

.logo a {
    font-size: var(--font-size-xl);
    font-weight: 700;
    text-decoration: none;
    display: flex;
    align-items: center;
    transition: all var(--transition-base);
    gap: var(--spacing-sm);
}

.logo-image {
    height: 55px;
    width: auto;
    object-fit: contain;
    display: block;
}

.nav-right {
    display: flex;
    align-items: center;
    gap: 0;
}

.nav-dropdown-wrapper {
    display: flex;
    align-items: center;
    gap: 0;
    border-bottom: 2px solid #0066CC;
    padding-bottom: 8px;
}

.nav-dropdown {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    cursor: pointer;
    position: relative;
    transition: all var(--transition-base);
    color: var(--text-primary);
}

.nav-dropdown:hover {
    opacity: 0.8;
}

/* Remove hover to open dropdown - only click opens */
.nav-dropdown:hover .nav-dropdown-menu {
    display: none !important;
}

.nav-icon {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
}

.nav-dropdown-text {
    font-size: var(--font-size-base);
    font-weight: 400;
    white-space: nowrap;
}

.nav-chevron {
    width: 12px;
    height: 12px;
    flex-shrink: 0;
    transition: transform var(--transition-base);
}

.nav-dropdown.active .nav-chevron {
    transform: translateY(2px);
}

.nav-separator {
    width: 1px;
    height: 24px;
    background: #E5E7EB;
    margin: 0 8px;
}

.nav-dropdown-menu {
    position: absolute;
    top: calc(100% + 10px);
    left: 0;
    background: #FFFFFF !important;
    border: 1px solid #E5E7EB;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    min-width: 220px;
    z-index: 10001;
    display: none !important;
    overflow: hidden;
    padding: 8px 0;
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
    opacity: 1 !important;
    background-color: #FFFFFF !important;
    background-image: none !important;
    transform: translateZ(0);
    will-change: transform;
    contain: layout style paint;
    mix-blend-mode: normal !important;
}

.nav-dropdown-menu:hover {
    background: #FFFFFF !important;
    background-color: #FFFFFF !important;
    opacity: 1 !important;
}

.nav-dropdown-menu * {
    mix-blend-mode: normal !important;
}

#imageConverterMenu {
    right: 0;
    left: auto;
}

#languageMenu {
    right: 0;
    left: auto;
}

/* Only show dropdown when active (clicked) */
.nav-dropdown.active .nav-dropdown-menu {
    display: block !important;
    background: #FFFFFF !important;
    background-color: #FFFFFF !important;
}

.nav-dropdown-item {
    display: block;
    padding: 12px 20px;
    color: var(--text-primary);
    text-decoration: none;
    font-size: var(--font-size-base);
    font-weight: 500;
    transition: all var(--transition-base);
    font-family: var(--font-family);
}

.nav-dropdown-item:hover {
    background: #FFFFFF;
    color: #0066CC;
    ;
}

.nav-dropdown-item:first-child {
    font-weight: 600;
}

.language-menu {
    display: grid;
    grid-template-columns: 1fr 1fr;
    min-width: 300px;
    padding: 8px 0;
    background: #FFFFFF !important;
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
    opacity: 1 !important;
    background-color: #FFFFFF !important;
    background-image: none !important;
    transform: translateZ(0);
    will-change: transform;
    contain: layout style paint;
    mix-blend-mode: normal !important;
}

.language-menu:hover {
    background: #FFFFFF !important;
    background-color: #FFFFFF !important;
}

.language-menu * {
    mix-blend-mode: normal !important;
}

.language-menu .nav-dropdown-item {
    padding: 12px 20px;
    text-align: left;
}

.language-menu .nav-dropdown-item.active {
    background: #F5F7FA;
    color: #0066CC;
    font-weight: 600;
}

.language-menu .nav-dropdown-item:hover {
    background: #F5F7FA;
    color: #0066CC;
}

#languageMenu {
    right: 0;
    left: auto;
}

.hamburger {
    display: none;
    flex-direction: column;
    gap: 4px;
    cursor: pointer;
    padding: 8px;
    z-index: 1001;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--text-primary);
    transition: all var(--transition-base);
    border-radius: 2px;
}

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(8px, 8px);
}

.hamburger.active span:nth-child(2) {
    opacity: 0;
}

.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
}

/* Hero Section */
.qr-hero-section {
    background: url('https://thinkogic.com/wp-content/uploads/2024/01/gdgdgd.png') center center / cover no-repeat;
    padding: calc(var(--spacing-xl) + 24px) 0 var(--spacing-lg) 0;
    min-height: 63vh;
    position: relative;
    overflow: visible;
    padding-bottom: calc(var(--spacing-lg) + 100px);
    width: 100vw;
    margin-left: calc(-50vw + 50%);
    margin-right: calc(-50vw + 50%);
    margin-top: 10px;
    box-sizing: border-box;
}

.qr-hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.3);
    pointer-events: none;
    z-index: 1;
}

.qr-hero-content {
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
    position: relative;
    z-index: 2;
}

.qr-hero-title {
    font-size: var(--font-size-4xl);
    font-weight: 800;
    margin-bottom: var(--spacing-md);
    line-height: 1.2;
    color: #FFFFFF;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.qr-hero-subtitle {
    font-size: var(--font-size-lg);
    color: rgba(255, 255, 255, 0.95);
    line-height: 1.6;
    font-weight: 400 !important;
    max-width: 900px;
    margin: 0 auto;
}

/* Converter Section */
.converter-section {
    padding: var(--spacing-xxl) 0;
    background: var(--bg-primary);
    margin-top: -264px;
}

.converter-wrapper {
    max-width: 900px;
    margin: 0 auto;
}

/* Upload Area */
.upload-area {
    background: #FFFFFF;
    border: none;
    border-radius: 16px;
    padding: var(--spacing-xl);
    transition: all var(--transition-base);
    margin-bottom: var(--spacing-lg);
    position: relative;
    z-index: 1;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
}

.upload-area.dragover {
    background: #F8F9FA;
    border: 2px dashed var(--primary-color);
    box-shadow: 0 8px 30px rgba(66, 133, 244, 0.15);
}

.upload-button-bar {
    background: linear-gradient(135deg, #F44336 0%, #E53935 100%);
    border: none;
    border-radius: 12px;
    padding: 18px 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    box-shadow: 0 4px 16px rgba(244, 67, 54, 0.4), 0 2px 8px rgba(244, 67, 54, 0.25);
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    margin-bottom: 0;
    width: 100%;
    max-width: 420px;
    position: relative;
    overflow: hidden;
}

.upload-button-bar::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s;
}

.upload-button-bar:hover::before {
    left: 100%;
}

.upload-button-bar:hover {
    background: linear-gradient(135deg, #E53935 0%, #D32F2F 100%);
    box-shadow: 0 6px 20px rgba(244, 67, 54, 0.4), 0 4px 12px rgba(244, 67, 54, 0.25);
    transform: translateY(-2px);
}

.upload-button-bar:active {
    transform: translateY(0);
    box-shadow: 0 2px 10px rgba(244, 67, 54, 0.3);
}

.choose-files-text {
    color: #FFFFFF;
    font-size: var(--font-size-lg);
    font-weight: 700;
    font-family: var(--font-family);
    letter-spacing: 0.3px;
}

.folder-icon {
    width: 20px;
    height: 20px;
    color: #FFFFFF;
    flex-shrink: 0;
}

.upload-icons {
    display: flex;
    align-items: center;
    gap: 12px;
}

.icon-btn {
    background: transparent;
    border: none;
    color: #FFFFFF;
    cursor: pointer;
    padding: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
    transition: all var(--transition-base);
    width: 32px;
    height: 32px;
    position: relative;
}

.icon-btn:hover {
    background: rgba(255, 255, 255, 0.2);
}

.icon-btn:disabled {
    cursor: not-allowed;
    opacity: 0.7;
}

.icon-btn:disabled:hover {
    background: rgba(255, 255, 255, 0.15);
}

.icon-btn svg {
    width: 20px;
    height: 20px;
}

.dropbox-btn svg {
    fill: #0061FF;
}

.drive-btn {
    padding: 2px;
}

.drive-btn svg {
    width: 20px;
    height: 20px;
    display: block;
}

/* Coming Soon Tooltip */
.coming-soon-tooltip {
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(-8px);
    background: #333333;
    color: white;
    padding: 6px 12px;
    border-radius: 6px;
    font-size: var(--font-size-xs);
    font-weight: 500;
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: all var(--transition-base);
    z-index: 1000;
    margin-bottom: 4px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.coming-soon-tooltip::after {
    content: '';
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    border: 5px solid transparent;
    border-top-color: #333333;
}

.icon-btn:hover .coming-soon-tooltip,
.action-icon-btn:hover .coming-soon-tooltip {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

.upload-footer {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    color: #9CA3AF;
    font-size: var(--font-size-sm);
    font-family: var(--font-family);
    margin-top: var(--spacing-xs);
    padding-top: var(--spacing-sm);
}

.lock-icon {
    color: #9CA3AF;
    flex-shrink: 0;
    opacity: 0.7;
    stroke-width: 2.5;
}

.drop-text {
    color: #9CA3AF;
    font-weight: 400;
    letter-spacing: 0.1px;
}

.signup-link {
    color: #999999;
    text-decoration: underline;
    cursor: pointer;
    transition: all var(--transition-base);
}

.signup-link:hover {
    color: #FFFFFF;
}

/* Files List */
.files-list {
    background: white;
    border-radius: 12px;
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
}

/* Files List inside Upload Area */
.upload-area .files-list {
    background: transparent;
    border-radius: 0;
    padding: var(--spacing-lg) 0 0 0;
    margin-bottom: 0;
    box-shadow: none;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    width: 100%;
}

.files-container {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
    width: 100%;
}

.file-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-sm) var(--spacing-md);
    background: white;
    border: 1px solid #E5E7EB;
    border-radius: 8px;
    width: 100%;
    max-width: 100%;
}

.file-icon {
    width: 32px;
    height: 32px;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #4285f4 0%, #3367d6 100%);
    border-radius: 6px;
    color: white;
}

.file-icon svg {
    width: 20px;
    height: 20px;
}

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

.file-to-text {
    color: var(--text-secondary);
    font-size: var(--font-size-base);
    margin: 0 var(--spacing-xs);
}

.file-format-select {
    padding: 6px 12px;
    border: 1px solid #E5E7EB;
    border-radius: 6px;
    font-size: var(--font-size-sm);
    font-family: var(--font-family);
    background: white;
    cursor: pointer;
    min-width: 100px;
}

.file-format-select:focus {
    outline: none;
    border-color: var(--primary-color);
}

.file-status-badge {
    background: #10B981;
    color: white;
    padding: 4px 12px;
    border-radius: 12px;
    font-size: var(--font-size-xs);
    font-weight: 600;
    white-space: nowrap;
}

.file-size-text {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    white-space: nowrap;
    margin-left: auto;
}

.btn-remove-file {
    background: transparent;
    color: #999999;
    border: none;
    padding: 4px;
    border-radius: 4px;
    cursor: pointer;
    transition: all var(--transition-base);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
}

.btn-remove-file:hover {
    background: #F5F5F5;
    color: var(--error-color);
}

.btn-remove-file svg {
    width: 16px;
    height: 16px;
}

/* Convert All Section */
.convert-all-section {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) 0;
    border-top: 1px solid #E5E7EB;
    margin-top: var(--spacing-md);
}

.convert-all-text {
    font-size: var(--font-size-base);
    color: var(--text-primary);
    font-weight: 500;
}

.convert-all-select {
    padding: 6px 12px;
    border: 1px solid #E5E7EB;
    border-radius: 6px;
    font-size: var(--font-size-base);
    font-family: var(--font-family);
    background: white;
    cursor: pointer;
    min-width: 120px;
}

.convert-all-select:focus {
    outline: none;
    border-color: var(--primary-color);
}

/* Action Bar */
.action-bar {
    background: #0E1B56;
    background-image:
        linear-gradient(45deg, rgba(255, 255, 255, 0.03) 25%, transparent 25%),
        linear-gradient(-45deg, rgba(255, 255, 255, 0.03) 25%, transparent 25%),
        linear-gradient(45deg, transparent 75%, rgba(255, 255, 255, 0.03) 75%),
        linear-gradient(-45deg, transparent 75%, rgba(255, 255, 255, 0.03) 75%);
    background-size: 20px 20px;
    background-position: 0 0, 0 10px, 10px -10px, -10px 0px;
    border-radius: 12px;
    padding: var(--spacing-md) var(--spacing-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    box-shadow: 0 4px 16px rgba(14, 27, 86, 0.3), 0 2px 8px rgba(14, 27, 86, 0.2);
    position: relative;
    overflow: hidden;
}

.action-bar::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
}

.btn-add-more {
    background: rgba(255, 255, 255, 0.95);
    color: #1F2937;
    border: 1px solid rgba(255, 255, 255, 0.2);
    padding: 12px 20px;
    border-radius: 8px;
    font-size: var(--font-size-sm);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    font-family: var(--font-family);
    display: flex;
    align-items: center;
    gap: 8px;
    white-space: nowrap;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
    position: relative;
    z-index: 1;
}

.btn-add-more:hover {
    background: #FFFFFF;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
    border-color: rgba(255, 255, 255, 0.3);
}

.btn-add-more:active {
    transform: translateY(0);
}

.btn-add-more svg {
    color: #F44336;
    stroke-width: 3;
    transition: transform 0.2s ease;
}

.btn-add-more:hover svg {
    transform: rotate(90deg);
}

.action-hint {
    font-size: var(--font-size-xs);
    color: rgba(255, 255, 255, 0.8);
    flex: 1;
    text-align: center;
    font-weight: 500;
}

.action-icons {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.action-icon-btn {
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
    transition: all var(--transition-base);
    width: 32px;
    height: 32px;
    position: relative;
}

.action-icon-btn:hover {
    background: rgba(255, 255, 255, 0.1);
}

.action-icon-btn:disabled {
    cursor: not-allowed;
    opacity: 0.7;
}

.action-icon-btn:disabled:hover {
    background: rgba(255, 255, 255, 0.05);
}

.action-icon-btn svg {
    width: 20px;
    height: 20px;
}

.btn-convert-action {
    background: linear-gradient(135deg, #F44336 0%, #E53935 100%);
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 8px;
    font-size: var(--font-size-base);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    font-family: var(--font-family);
    display: flex;
    align-items: center;
    gap: 8px;
    white-space: nowrap;
    box-shadow: 0 4px 12px rgba(244, 67, 54, 0.4), 0 2px 6px rgba(244, 67, 54, 0.3);
    position: relative;
    z-index: 1;
    overflow: hidden;
}

.btn-convert-action::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s;
}

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

.btn-convert-action:hover {
    background: linear-gradient(135deg, #E53935 0%, #D32F2F 100%);
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(244, 67, 54, 0.5), 0 4px 10px rgba(244, 67, 54, 0.4);
}

.btn-convert-action:active {
    transform: translateY(0);
}

.btn-convert-action svg {
    width: 16px;
    height: 16px;
}

/* Options Panel */
.options-panel {
    background: white;
    border-radius: 12px;
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
}

.options-panel h3 {
    font-size: var(--font-size-lg);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.option-group {
    margin-bottom: var(--spacing-md);
}

.option-group label {
    display: block;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
    font-size: var(--font-size-base);
}

.format-select {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: var(--font-size-base);
    font-family: var(--font-family);
    background: white;
    cursor: pointer;
    transition: all var(--transition-base);
}

.format-select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.quality-slider {
    width: 100%;
    height: 8px;
    border-radius: 4px;
    background: var(--bg-secondary);
    outline: none;
    -webkit-appearance: none;
    appearance: none;
}

.quality-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--primary-color);
    cursor: pointer;
}

.quality-slider::-moz-range-thumb {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--primary-color);
    cursor: pointer;
    border: none;
}

.quality-value {
    text-align: center;
    font-weight: 600;
    color: var(--primary-color);
    margin-top: var(--spacing-xs);
}

.resize-options {
    margin-top: var(--spacing-sm);
    padding: var(--spacing-sm);
    background: var(--bg-secondary);
    border-radius: 8px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-sm);
}

.resize-input-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.resize-input-group label {
    font-size: var(--font-size-sm);
    font-weight: 500;
}

.resize-input {
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: var(--font-size-sm);
    font-family: var(--font-family);
}

.resize-input:focus {
    outline: none;
    border-color: var(--primary-color);
}

.btn-convert {
    width: 100%;
    padding: 16px 32px;
    background: linear-gradient(135deg, #4285f4 0%, #3367d6 100%);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: var(--font-size-lg);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
    font-family: var(--font-family);
    box-shadow: 0 4px 15px rgba(66, 133, 244, 0.4);
    margin-top: var(--spacing-md);
}

.btn-convert:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(66, 133, 244, 0.5);
}

.btn-convert:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

/* Progress Section */
.progress-section {
    background: white;
    border-radius: 12px;
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
}

.progress-bar {
    width: 100%;
    height: 12px;
    background: var(--bg-secondary);
    border-radius: 6px;
    overflow: hidden;
    margin-bottom: var(--spacing-sm);
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-color), var(--primary-light));
    border-radius: 6px;
    transition: width 0.3s ease;
    width: 0%;
}

.progress-text {
    text-align: center;
    font-weight: 600;
    color: var(--text-primary);
}

/* Image Popup */
.image-popup {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 10000;
    display: none;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg);
}

.popup-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
}

.popup-content {
    position: relative;
    background: white;
    border-radius: 16px;
    max-width: 600px;
    width: 100%;
    max-height: 90vh;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    display: flex;
    flex-direction: column;
    z-index: 1;
}

.popup-close {
    position: absolute;
    top: 16px;
    right: 16px;
    background: rgba(0, 0, 0, 0.5);
    border: none;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: white;
    transition: all var(--transition-base);
    z-index: 10;
}

.popup-close:hover {
    background: rgba(0, 0, 0, 0.7);
    transform: rotate(90deg);
}

.popup-image-container {
    width: 100%;
    max-height: 60vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #f5f5f5;
    overflow: hidden;
}

.popup-image-container img {
    max-width: 100%;
    max-height: 60vh;
    object-fit: contain;
    display: block;
}

.popup-info {
    padding: var(--spacing-lg);
    text-align: center;
    border-bottom: 1px solid #E5E7EB;
}

.popup-info h3 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary);
    margin: 0 0 var(--spacing-xs) 0;
    word-break: break-word;
}

.popup-info p {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin: 0;
}

.btn-popup-download {
    width: 100%;
    padding: 16px;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 0;
    font-size: var(--font-size-base);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
    font-family: var(--font-family);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.btn-popup-download:hover {
    background: var(--primary-light);
    transform: none;
}

.btn-popup-download svg {
    width: 20px;
    height: 20px;
}

/* Results Section */
.results-section {
    background: white;
    border-radius: 12px;
    padding: var(--spacing-lg);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

.results-section h3 {
    font-size: var(--font-size-lg);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.results-container {
    display: flex;
    flex-direction: row;
    gap: var(--spacing-md);
    overflow-x: auto;
    overflow-y: hidden;
    scroll-behavior: smooth;
    -webkit-overflow-scrolling: touch;
    padding-bottom: var(--spacing-xs);
}

.results-container::-webkit-scrollbar {
    height: 8px;
}

.results-container::-webkit-scrollbar-track {
    background: var(--bg-secondary);
    border-radius: 4px;
}

.results-container::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 4px;
}

.results-container::-webkit-scrollbar-thumb:hover {
    background: var(--primary-dark);
}

.result-item {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm);
    background: var(--bg-secondary);
    border-radius: 8px;
    min-width: 200px;
    max-width: 200px;
    flex-shrink: 0;
}

.result-preview-wrapper {
    position: relative;
    width: 100%;
    height: 150px;
    border-radius: 6px;
    overflow: hidden;
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.result-preview-wrapper:hover {
    transform: scale(1.02);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.result-preview {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.result-preview-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.7), rgba(0, 0, 0, 0.4), transparent);
    color: white;
    padding: 8px;
    text-align: center;
    font-size: var(--font-size-xs);
    font-weight: 600;
    pointer-events: none;
    transition: opacity 0.2s ease;
}

.result-preview-wrapper:hover .result-preview-overlay {
    background: linear-gradient(to top, rgba(0, 0, 0, 0.8), rgba(0, 0, 0, 0.5), transparent);
}

.result-info {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

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

.result-size {
    font-size: var(--font-size-xs);
    color: var(--text-muted);
}

.btn-download {
    width: 100%;
    padding: 10px;
    background: var(--success-color);
    color: white;
    border: none;
    border-radius: 6px;
    font-size: var(--font-size-sm);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
    font-family: var(--font-family);
}

.btn-download:hover {
    background: #059669;
    transform: translateY(-2px);
}

/* Formats Section */
.formats-section {
    padding: var(--spacing-xxl) 0;
    background: #0E1B56;
}

.formats-section h2 {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--spacing-xl);
    color: #FFFFFF;
}

.formats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: var(--spacing-md);
}

.format-item {
    padding: var(--spacing-sm);
    background: rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    text-align: center;
    font-weight: 600;
    color: #FFFFFF;
    transition: all var(--transition-base);
    cursor: pointer;
    border: 1px solid rgba(255, 255, 255, 0.2);
    text-decoration: none;
    display: block;
}

.format-item:hover {
    background: rgba(255, 255, 255, 0.2);
    color: #FFFFFF;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    border-color: rgba(255, 255, 255, 0.3);
}

/* Chrome Extension Section */
.chrome-extension-section {
    padding: var(--spacing-lg) 0 0 0;
    background: transparent;
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
}

.extension-card {
    background: linear-gradient(135deg, rgba(66, 133, 244, 0.1) 0%, rgba(66, 133, 244, 0.15) 100%);
    border-radius: 20px;
    padding: var(--spacing-lg) var(--spacing-lg);
    text-align: center;
    max-width: 1400px;
    width: 100%;
    margin: 0 auto;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    position: relative;
    overflow: hidden;
}

.extension-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(circle at 20% 30%, rgba(66, 133, 244, 0.08) 0%, transparent 50%),
        radial-gradient(circle at 80% 70%, rgba(66, 133, 244, 0.08) 0%, transparent 50%);
    pointer-events: none;
    z-index: 0;
}

.extension-card>* {
    position: relative;
    z-index: 1;
}

.extension-heading {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: #333333;
    margin-bottom: var(--spacing-xs);
    line-height: 1.3;
}

.extension-description {
    font-size: var(--font-size-base);
    font-weight: 400;
    color: #666666;
    margin-bottom: var(--spacing-md);
    line-height: 1.6;
    max-width: 100%;
    margin-left: auto;
    margin-right: auto;
}

.btn-extension {
    background: #4285f4;
    color: #FFFFFF;
    border: none;
    padding: 14px 28px;
    border-radius: 8px;
    font-size: var(--font-size-base);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
    font-family: var(--font-family);
    box-shadow: 0 4px 15px rgba(66, 133, 244, 0.3);
    display: inline-block;
    text-decoration: none;
}

.btn-extension:hover {
    background: #3367d6;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(66, 133, 244, 0.4);
}

.btn-extension:active {
    transform: translateY(0);
}

/* Info Box Section */
.info-box-section {
    padding: var(--spacing-xl) 0;
    background: white;
}

.info-box {
    background: white;
    border: 2px solid #E5E7EB;
    border-radius: 12px;
    padding: var(--spacing-xl);
    max-width: 1200px;
    margin: 0 auto;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    text-align: center;
}

.info-box-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
    line-height: 1.3;
}

.info-box-description {
    font-size: var(--font-size-base);
    font-weight: 400;
    color: var(--text-secondary);
    line-height: 1.6;
    max-width: 800px;
    margin: 0 auto var(--spacing-xl);
}

/* Converter Boxes in Upload Area */
.upload-area .converter-boxes-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-sm);
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-lg);
    border-top: 1px solid #E5E7EB;
    width: 100%;
}

.upload-area .converter-box {
    background: #FFFFFF;
    border: 1px solid #F3F4F6;
    border-radius: 12px;
    padding: var(--spacing-md) var(--spacing-sm);
    text-align: center;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    text-decoration: none;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
    position: relative;
    overflow: hidden;
    color: inherit;
}

.upload-area .converter-box::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, #4285f4, #34a853, #fbbc04, #ea4335);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.upload-area .converter-box:hover {
    background: #FFFFFF;
    transform: translateY(-6px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12), 0 4px 12px rgba(0, 0, 0, 0.08);
    border-color: #E5E7EB;
}

.upload-area .converter-box:hover::before {
    transform: scaleX(1);
}

.upload-area .converter-box-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #F8F9FA 0%, #FFFFFF 100%);
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(66, 133, 244, 0.15), 0 2px 6px rgba(66, 133, 244, 0.1);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
}

.upload-area .converter-box-icon::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: 16px;
    background: linear-gradient(135deg, rgba(66, 133, 244, 0.1) 0%, rgba(66, 133, 244, 0.05) 100%);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.upload-area .converter-box-icon svg {
    width: 28px;
    height: 28px;
    stroke: #4285f4;
    fill: none;
    stroke-width: 2;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    z-index: 1;
}

.upload-area .converter-box:hover .converter-box-icon {
    transform: scale(1.1) rotate(2deg);
    background: linear-gradient(135deg, #4285f4 0%, #34a853 100%);
    box-shadow: 0 6px 20px rgba(66, 133, 244, 0.3), 0 4px 12px rgba(66, 133, 244, 0.2);
}

.upload-area .converter-box:hover .converter-box-icon::after {
    opacity: 1;
}

.upload-area .converter-box:hover .converter-box-icon svg {
    stroke: #FFFFFF;
    transform: scale(1.1);
}

.upload-area .converter-box-title {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: #1F2937;
    margin: 0;
    line-height: 1.4;
    letter-spacing: -0.01em;
    transition: color 0.3s ease;
}

.upload-area .converter-box:hover .converter-box-title {
    color: #111827;
}

/* Features Section */
.features-section {
    padding: var(--spacing-xxl) 0;
    background: white;
}

.features-section h2 {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--spacing-xxl);
    color: var(--text-primary);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xl);
    max-width: 1200px;
    margin: 0 auto;
}

.feature-card {
    background: white;
    border-radius: 12px;
    padding: var(--spacing-xl);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
}

.feature-icon {
    margin-bottom: var(--spacing-md);
    display: flex;
    align-items: center;
    justify-content: center;
}

.feature-icon svg {
    width: 40px;
    height: 40px;
    stroke: #F44336;
    fill: none;
    stroke-width: 2;
}

.feature-card h3 {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: #374151;
    margin-bottom: var(--spacing-sm);
    line-height: 1.4;
}

.feature-card p {
    font-size: var(--font-size-base);
    color: #6B7280;
    line-height: 1.6;
    margin: 0;
}

/* FAQ Section */
.faq-section {
    padding: var(--spacing-xxl) 0;
    background: white;
}

.faq-section .section-title {
    color: #0E1B56;
    background: none;
    -webkit-background-clip: unset;
    -webkit-text-fill-color: #0E1B56;
    background-clip: unset;
    font-size: var(--font-size-3xl);
    font-weight: 700;
    margin-bottom: var(--spacing-xl);
    text-align: center;
}

.faq-item {
    background: transparent;
    padding: var(--spacing-md) 0;
    margin-bottom: 0;
    border: none;
    border-bottom: 1px solid #E5E7EB;
    box-shadow: none;
}

.faq-item:last-child {
    border-bottom: none;
}

.faq-question {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0;
    transition: color var(--transition-base);
}

.faq-question:hover {
    color: var(--primary-color);
}

.faq-question span:first-child {
    flex: 1;
}

.faq-answer {
    color: var(--text-secondary);
    line-height: 1.6;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, margin-top 0.3s ease;
    font-size: var(--font-size-base);
    font-weight: 400;
    margin-top: 0;
    padding: 0;
}

.faq-item.active .faq-answer {
    max-height: 1000px;
    margin-top: var(--spacing-md);
}

.faq-toggle {
    color: var(--text-primary);
    transition: transform 0.3s ease;
    margin-left: var(--spacing-md);
    flex-shrink: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 12px;
    height: 8px;
}

.faq-toggle svg {
    width: 100%;
    height: 100%;
    display: block;
}

.faq-item.active .faq-toggle {
    transform: rotate(180deg);
}

/* Footer */
.footer {
    background: #1A1A1A;
    color: #FFFFFF;
    padding: var(--spacing-xl) 0 var(--spacing-md);
    width: 100vw;
    margin-left: calc(-50vw + 50%);
    margin-right: calc(-50vw + 50%);
    box-sizing: border-box;
}

.footer>.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.footer-links {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
    font-size: var(--font-size-sm);
}

.footer-links a {
    color: #FFFFFF;
    text-decoration: none;
    transition: all var(--transition-base);
}

.footer-links a:hover {
    color: var(--primary-light);
    text-decoration: underline;
}

.footer-separator {
    color: #666;
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid #333;
    font-size: var(--font-size-sm);
    color: #999;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hamburger {
        display: flex;
        padding: 10px;
        margin-right: -10px;
    }

    .hamburger span {
        width: 24px;
        height: 3px;
        background: var(--text-primary);
    }

    .nav-wrapper {
        position: relative;
    }

    .nav-right {
        position: fixed;
        top: 71px;
        left: 0;
        right: 0;
        background: #FFFFFF;
        border-bottom: 1px solid #E5E7EB;
        box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        padding: 0;
        z-index: 999;
    }

    .nav-right.active {
        max-height: 600px;
        padding: var(--spacing-lg) var(--spacing-md);
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
    }

    .nav-dropdown-wrapper {
        flex-direction: column;
        align-items: flex-start;
        border-bottom: none;
        padding-bottom: 0;
        gap: 0;
        width: 100%;
    }

    .nav-separator {
        display: none;
    }

    .nav-dropdown {
        padding: 16px 12px;
        width: 100%;
        border-bottom: 1px solid #F3F4F6;
        transition: background-color 0.2s ease, padding 0.2s ease;
        border-radius: 8px;
        margin: 2px 0;
    }

    .nav-dropdown:first-child {
        padding-top: 16px;
        margin-top: 0;
    }

    .nav-dropdown:last-child {
        border-bottom: none;
        padding-bottom: 16px;
        margin-bottom: 0;
    }

    .nav-dropdown:active {
        background-color: #F9FAFB;
    }

    .nav-dropdown-text {
        font-size: var(--font-size-base);
        font-weight: 600;
        color: var(--text-primary);
        display: flex;
        align-items: center;
        gap: 10px;
        width: 100%;
    }

    .nav-icon {
        width: 18px;
        height: 18px;
        flex-shrink: 0;
        color: var(--text-secondary);
    }

    .nav-chevron {
        margin-left: auto;
        width: 14px;
        height: 14px;
        transition: transform 0.3s ease;
        flex-shrink: 0;
    }

    .nav-dropdown.active .nav-chevron {
        transform: rotate(180deg);
    }

    .nav-dropdown-menu {
        position: relative !important;
        top: 0 !important;
        left: 0 !important;
        right: auto !important;
        box-shadow: none;
        border: none;
        margin-top: var(--spacing-sm);
        margin-left: 0;
        margin-right: 0;
        min-width: 100% !important;
        max-width: 100% !important;
        width: 100% !important;
        background: #F9FAFB !important;
        border-radius: 10px;
        padding: 6px 0;
        transition: all 0.3s ease;
        transform: none !important;
    }

    /* Override specific menu positioning for mobile */
    #imageConverterMenu,
    #allToolsMenu,
    #languageMenu {
        right: auto !important;
        left: 0 !important;
        position: relative !important;
    }

    .nav-dropdown.active .nav-dropdown-menu {
        display: block !important;
        background: #F5F7FA !important;
    }

    .nav-dropdown-item {
        padding: 12px 16px;
        font-size: var(--font-size-sm);
        font-weight: 500;
        color: var(--text-secondary);
        transition: all 0.2s ease;
        border-radius: 6px;
        margin: 2px 8px;
        display: block;
        text-decoration: none;
        width: calc(100% - 16px);
        box-sizing: border-box;
    }

    .nav-dropdown-item:hover {
        background: #FFFFFF;
        color: var(--primary-color);
        transform: translateX(4px);
        box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
    }

    .nav-dropdown-item:first-child {
        font-weight: 600;
        color: var(--text-primary);
        background: transparent;
    }

    .language-menu .nav-dropdown-item {
        padding: 10px 16px;
        font-size: var(--font-size-sm);
    }

    .language-menu .nav-dropdown-item.active {
        background: #E3F2FD !important;
        color: var(--primary-color) !important;
        font-weight: 600;
    }

    .logo-image {
        height: 45px;
    }

    .nav-wrapper {
        min-height: 60px;
        padding: 8px 0;
    }

    .qr-hero-section {
        padding: calc(var(--spacing-lg) + 5px) 0 var(--spacing-xl) 0 !important;
        padding-bottom: calc(var(--spacing-xl) + 150px) !important;
        min-height: auto !important;
        margin-top: 10px !important;
    }

    .qr-hero-content {
        padding: 0 var(--spacing-sm) !important;
        max-width: 100% !important;
    }

    .qr-hero-section .qr-hero-content .qr-hero-title,
    .qr-hero-section h1.qr-hero-title,
    .qr-hero-title {
        font-size: var(--font-size-2xl) !important;
        font-weight: 800 !important;
        line-height: 1.3 !important;
        margin-bottom: var(--spacing-sm) !important;
        color: #FFFFFF !important;
        text-shadow: 0 2px 10px rgba(0, 0, 0, 0.1) !important;
        padding: 0 !important;
    }

    .qr-hero-section .qr-hero-content .qr-hero-subtitle,
    .qr-hero-section p.qr-hero-subtitle,
    .qr-hero-subtitle {
        font-size: var(--font-size-sm) !important;
        line-height: 1.5 !important;
        color: rgba(255, 255, 255, 0.95) !important;
        font-weight: 400 !important;
        max-width: 100% !important;
        margin: 0 auto !important;
        padding: 0 !important;
    }

    /* Upload Area Mobile */
    .upload-area {
        padding: var(--spacing-md);
        border-radius: 12px;
        margin-bottom: var(--spacing-md);
        margin-top: 50px;
    }

    .upload-button-bar {
        padding: 14px 24px;
        max-width: 100%;
        font-size: var(--font-size-base);
    }

    .choose-files-text {
        font-size: var(--font-size-base);
    }

    .folder-icon {
        width: 18px;
        height: 18px;
    }

    .upload-footer {
        font-size: var(--font-size-xs);
        padding-top: var(--spacing-xs);
        margin-top: var(--spacing-xs);
    }

    .drop-text {
        font-size: var(--font-size-xs);
    }

    .file-item {
        flex-wrap: wrap;
        gap: var(--spacing-sm);
        padding: var(--spacing-sm);
    }

    .file-name-text {
        min-width: 100px;
        font-size: var(--font-size-sm);
    }

    .file-to-text {
        display: none;
    }

    .file-format-select {
        min-width: 80px;
        font-size: var(--font-size-xs);
        padding: 4px 8px;
    }

    .file-status-badge {
        font-size: 10px;
        padding: 2px 8px;
    }

    .file-size-text {
        font-size: var(--font-size-xs);
    }

    .action-bar {
        flex-wrap: wrap;
        gap: var(--spacing-sm);
        padding: var(--spacing-sm) var(--spacing-md);
    }

    .btn-add-more {
        font-size: var(--font-size-xs);
        padding: 8px 12px;
    }

    .action-hint {
        font-size: var(--font-size-xs);
        width: 100%;
        order: 3;
    }

    .action-icons {
        order: 2;
    }

    .btn-convert-action {
        width: 100%;
        order: 4;
        justify-content: center;
    }

    .resize-options {
        grid-template-columns: 1fr;
    }

    .formats-grid {
        grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    }

    /* Features Section Mobile */
    .features-section {
        padding: var(--spacing-xl) 0;
    }

    .features-section h2 {
        font-size: var(--font-size-3xl);
        margin-bottom: var(--spacing-lg);
        padding: 0 var(--spacing-sm);
        line-height: 1.3;
    }

    .features-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
        padding: 0 var(--spacing-sm);
    }

    .feature-card {
        padding: var(--spacing-md);
        margin: 0 auto;
        max-width: 100%;
    }

    .feature-icon {
        margin-bottom: var(--spacing-sm);
    }

    .feature-icon svg {
        width: 36px;
        height: 36px;
    }

    .feature-card h3 {
        font-size: var(--font-size-base);
        margin-bottom: var(--spacing-xs);
    }

    .feature-card p {
        font-size: var(--font-size-sm);
        line-height: 1.5;
    }

    .results-container {
        /* Maintain horizontal scroll on mobile */
        min-width: 0;
    }

    .result-item {
        min-width: 180px;
        max-width: 180px;
    }

    /* Chrome Extension Section Mobile */
    .chrome-extension-section {
        padding: var(--spacing-lg) 0;
    }

    .extension-card {
        padding: var(--spacing-lg) var(--spacing-md);
        border-radius: 16px;
        width: 95%;
        max-width: 95%;
    }

    .extension-heading {
        font-size: var(--font-size-xl);
        margin-bottom: var(--spacing-xs);
    }

    .extension-description {
        font-size: var(--font-size-sm);
        margin-bottom: var(--spacing-md);
    }

    .btn-extension {
        padding: 12px 24px;
        font-size: var(--font-size-sm);
        width: 100%;
        max-width: 100%;
    }

    /* Info Box Mobile */
    .info-box {
        padding: var(--spacing-lg);
        margin: 0 var(--spacing-md);
    }

    .info-box-title {
        font-size: var(--font-size-lg);
    }

    .info-box-description {
        font-size: var(--font-size-sm);
    }

    /* Converter Boxes Grid Mobile */
    .upload-area .converter-boxes-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-xs);
        margin-top: var(--spacing-md);
        padding-top: var(--spacing-md);
        width: 100%;
    }

    .upload-area .converter-box {
        padding: var(--spacing-sm) var(--spacing-xs);
        border-radius: 10px;
        min-height: auto;
    }

    .upload-area .converter-box-icon {
        width: 48px;
        height: 48px;
        border-radius: 10px;
    }

    .upload-area .converter-box-icon svg {
        width: 24px;
        height: 24px;
    }

    .upload-area .converter-box-title {
        font-size: var(--font-size-xs);
        line-height: 1.3;
        text-align: center;
        word-break: break-word;
    }
}

@media (max-width: 480px) {

    /* Upload Area - Extra Small Mobile */
    .upload-area {
        padding: var(--spacing-sm);
        border-radius: 10px;
        margin-top: 10px;
    }

    .upload-button-bar {
        padding: 12px 20px;
        border-radius: 10px;
    }

    .choose-files-text {
        font-size: var(--font-size-sm);
    }

    .folder-icon {
        width: 16px;
        height: 16px;
    }

    /* Converter Boxes Grid - Extra Small Mobile */
    .upload-area .converter-boxes-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-xs);
        margin-top: var(--spacing-sm);
        padding-top: var(--spacing-sm);
    }

    .upload-area .converter-box {
        padding: var(--spacing-xs);
        border-radius: 8px;
    }

    .upload-area .converter-box-icon {
        width: 44px;
        height: 44px;
        border-radius: 8px;
    }

    .upload-area .converter-box-icon svg {
        width: 22px;
        height: 22px;
    }

    .upload-area .converter-box-title {
        font-size: 10px;
        line-height: 1.2;
    }

    /* Features Section - Extra Small Mobile */
    .features-section {
        padding: var(--spacing-lg) 0;
    }

    .features-section h2 {
        font-size: var(--font-size-xl);
        margin-bottom: var(--spacing-md);
        padding: 0 var(--spacing-xs);
    }

    .features-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-sm);
        padding: 0 var(--spacing-xs);
    }

    .feature-card {
        padding: var(--spacing-sm);
    }

    .feature-icon svg {
        width: 32px;
        height: 32px;
    }

    .feature-card h3 {
        font-size: var(--font-size-sm);
    }

    .feature-card p {
        font-size: var(--font-size-xs);
    }

    /* Popup Mobile */
    .popup-content {
        max-width: 100%;
        max-height: 95vh;
        margin: var(--spacing-md);
    }

    .popup-image-container {
        max-height: 50vh;
    }

    .popup-image-container img {
        max-height: 50vh;
    }

    .popup-info {
        padding: var(--spacing-md);
    }

    .popup-close {
        top: 12px;
        right: 12px;
        width: 36px;
        height: 36px;
    }
}

/* FAQ Section Mobile */
@media (max-width: 768px) {
    .faq-section {
        padding: var(--spacing-lg) 0;
    }

    .faq-item {
        padding: var(--spacing-md) 0;
    }

    .faq-question {
        font-size: var(--font-size-base);
        padding: 0;
    }

    .faq-answer {
        font-size: var(--font-size-sm);
    }
}