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

:root {
    --primary-color: #4a90e2;
    --primary-dark: #357abd;
    --header-color: #4a90e2;
    --secondary-color: #64748b;
    --background: #ffffff;
    --surface: #f8fafc;
    --text: #1e293b;
    --text-light: #64748b;
    --border: #e2e8f0;
    --success: #10b981;
    --error: #ef4444;
    --shadow: rgba(0, 0, 0, 0.1);
    --shadow-lg: rgba(0, 0, 0, 0.15);
    --upload-bg: #f1f5f9;
    --upload-border: #cbd5e1;
}

[data-theme="dark"] {
    --background: #0f172a;
    --surface: #1e293b;
    --text: #f1f5f9;
    --text-light: #94a3b8;
    --border: #334155;
    --upload-bg: #1e293b;
    --upload-border: #475569;
    --shadow: rgba(0, 0, 0, 0.3);
    --shadow-lg: rgba(0, 0, 0, 0.5);
    --header-color: #1e3a5f;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text);
    background-color: var(--background);
    transition: background-color 0.3s ease, color 0.3s ease;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
.header {
    background: var(--header-color);
    color: white;
    padding: 2.5rem 0 2rem 0;
    box-shadow: 0 2px 10px var(--shadow);
    transition: background-color 0.3s ease;
}

.header-content {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    gap: 2rem;
    position: relative;
}

.header-main {
    grid-column: 2;
    text-align: center;
    justify-self: center;
}

.header-controls {
    grid-column: 3;
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-shrink: 0;
    justify-self: end;
}

.offline-badge {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 0.75rem;
    background: rgba(255, 255, 255, 0.15);
    border-radius: 8px;
    font-size: 0.85rem;
    font-weight: 500;
    color: white;
    white-space: nowrap;
    transition: background 0.2s ease;
}

.offline-badge:hover {
    background: rgba(255, 255, 255, 0.25);
}

.offline-icon {
    font-size: 1rem;
}

.offline-text {
    display: inline-block;
}

@media (max-width: 768px) {
    .offline-text {
        display: none;
    }
    
    .offline-badge {
        padding: 0.5rem;
        min-width: 32px;
        justify-content: center;
    }
}

.logo {
    font-size: 3rem;
    margin-bottom: 0.5rem;
    font-weight: 700;
}

.tagline {
    font-size: 1.25rem;
    opacity: 0.95;
}

.translate-widget {
    display: inline-block;
    vertical-align: middle;
}

/* Google Translate Widget Styling - стилизовано под кнопку темы */
#google_translate_element {
    display: inline-block;
    position: relative;
    width: 50px;
    height: 50px;
}

/* Показываем виджет, но скрываем текст */
#google_translate_element .goog-te-gadget {
    font-size: 0 !important;
    display: block !important;
    margin: 0 !important;
    padding: 0 !important;
}

#google_translate_element .goog-te-gadget-simple {
    background-color: transparent !important;
    border: none !important;
    font-size: 0 !important;
    padding: 0 !important;
    margin: 0 !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    width: 50px !important;
    height: 50px !important;
}

/* Стилизуем ссылку как квадратную кнопку */
#google_translate_element .goog-te-gadget-simple a,
#google_translate_element a.VIpgJd-ZVi9od-xl07Ob-lTBxed {
    background: rgba(255, 255, 255, 0.2) !important;
    border: 2px solid rgba(255, 255, 255, 0.3) !important;
    color: transparent !important;
    width: 50px !important;
    height: 50px !important;
    border-radius: 12px !important;
    font-size: 0 !important;
    cursor: pointer !important;
    transition: all 0.3s ease !important;
    backdrop-filter: blur(10px) !important;
    outline: none !important;
    padding: 0 !important;
    margin: 0 !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    position: relative !important;
    text-decoration: none !important;
    box-sizing: border-box !important;
}

/* Добавляем иконку глобуса через псевдоэлемент */
#google_translate_element .goog-te-gadget-simple a:before,
#google_translate_element a.VIpgJd-ZVi9od-xl07Ob-lTBxed:before {
    content: "🌐" !important;
    font-size: 1.5rem !important;
    position: absolute !important;
    left: 50% !important;
    top: 50% !important;
    transform: translate(-50%, -50%) !important;
    pointer-events: none !important;
    color: white !important;
    z-index: 1 !important;
}

/* Скрываем все текстовые элементы и изображения внутри ссылки */
#google_translate_element .goog-te-gadget-simple a *,
#google_translate_element a.VIpgJd-ZVi9od-xl07Ob-lTBxed * {
    display: none !important;
    visibility: hidden !important;
    opacity: 0 !important;
    width: 0 !important;
    height: 0 !important;
}

/* Скрываем иконку Google Translate */
#google_translate_element .goog-te-gadget-icon {
    display: none !important;
}

/* Hover эффект */
#google_translate_element .goog-te-gadget-simple a:hover,
#google_translate_element a.VIpgJd-ZVi9od-xl07Ob-lTBxed:hover {
    background-color: rgba(255, 255, 255, 0.3) !important;
    transform: scale(1.05) !important;
}

/* Стили для select (если используется другой формат) */
#google_translate_element .goog-te-combo,
#google_translate_element select {
    background: rgba(255, 255, 255, 0.2) !important;
    border: 2px solid rgba(255, 255, 255, 0.3) !important;
    color: transparent !important;
    width: 50px !important;
    height: 50px !important;
    border-radius: 12px !important;
    font-size: 0 !important;
    cursor: pointer !important;
    transition: all 0.3s ease !important;
    backdrop-filter: blur(10px) !important;
    outline: none !important;
    -webkit-appearance: none !important;
    -moz-appearance: none !important;
    appearance: none !important;
    padding: 0 !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    position: relative !important;
    margin: 0 !important;
    background-image: none !important;
}

#google_translate_element .goog-te-combo:before,
#google_translate_element select:before {
    content: "🌐" !important;
    font-size: 1.5rem !important;
    position: absolute !important;
    left: 50% !important;
    top: 50% !important;
    transform: translate(-50%, -50%) !important;
    pointer-events: none !important;
    color: white !important;
    z-index: 1 !important;
}

#google_translate_element .goog-te-combo:hover,
#google_translate_element select:hover {
    background-color: rgba(255, 255, 255, 0.3) !important;
    transform: scale(1.05) !important;
}

.theme-toggle {
    background: rgba(255, 255, 255, 0.2);
    border: 2px solid rgba(255, 255, 255, 0.3);
    color: white;
    width: 50px;
    height: 50px;
    border-radius: 12px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
    flex-shrink: 0;
    position: relative;
    z-index: 10;
}

.theme-toggle:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: scale(1.05);
}

.theme-icon {
    display: block;
}

/* Upload Section */
.upload-section {
    padding: 4rem 0 3rem;
    background: var(--background);
}

.upload-card {
    background: var(--background);
    padding: 3.5rem;
    border-radius: 24px;
    box-shadow: 0 8px 32px var(--shadow-lg);
    max-width: 950px;
    margin: 0 auto;
    border: 1px solid var(--border);
    transition: all 0.3s ease;
}

.upload-card h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: var(--text);
    font-weight: 700;
}

.upload-description {
    text-align: center;
    color: var(--text-light);
    margin-bottom: 2.5rem;
    font-size: 1.1rem;
    line-height: 1.7;
}

/* Onboarding Tooltip */
.onboarding-tooltip {
    position: relative;
    margin: -1.5rem auto 1.5rem auto;
    max-width: 500px;
    animation: tooltipFadeIn 0.5s ease-out;
}

@keyframes tooltipFadeIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.tooltip-content {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    background: var(--primary-color);
    color: white;
    padding: 1rem 1.25rem;
    border-radius: 12px;
    box-shadow: 0 4px 16px rgba(74, 144, 226, 0.3);
    position: relative;
}

.tooltip-icon {
    font-size: 1.5rem;
    flex-shrink: 0;
}

.tooltip-text {
    flex: 1;
    font-size: 0.9rem;
    line-height: 1.5;
}

.tooltip-text strong {
    font-weight: 600;
}

.tooltip-close {
    background: rgba(255, 255, 255, 0.2);
    border: none;
    color: white;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    cursor: pointer;
    font-size: 1.25rem;
    line-height: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: background 0.2s ease;
}

.tooltip-close:hover {
    background: rgba(255, 255, 255, 0.3);
}

.tooltip-arrow {
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 0;
    border-left: 8px solid transparent;
    border-right: 8px solid transparent;
    border-top: 8px solid var(--primary-color);
}

@media (max-width: 768px) {
    .onboarding-tooltip {
        margin: -1rem auto 1rem auto;
        max-width: 90%;
    }
    
    .tooltip-content {
        padding: 0.875rem 1rem;
    }
    
    .tooltip-text {
        font-size: 0.85rem;
    }
}

.upload-area {
    border: 4px dashed var(--upload-border);
    border-radius: 20px;
    padding: 5rem 2rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    background: var(--upload-bg);
    margin-bottom: 2rem;
    min-height: 250px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.upload-area:hover {
    border-color: var(--primary-color);
    background: var(--surface);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px var(--shadow-lg);
}

.upload-area.dragover {
    border-color: var(--primary-color);
    background: rgba(37, 99, 235, 0.1);
    transform: scale(1.02);
}

.upload-content {
    pointer-events: none;
    user-select: none;
    position: relative;
    z-index: 2;
}

.file-input-hidden {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    cursor: pointer;
    z-index: 10;
    font-size: 0;
    /* Chrome compatibility: ensure input is clickable */
    pointer-events: auto;
    -webkit-appearance: none;
    appearance: none;
}

.upload-icon {
    font-size: 6rem;
    margin-bottom: 2rem;
    filter: grayscale(0.2);
    transition: transform 0.3s ease;
    opacity: 0.8;
}

.upload-area:hover .upload-icon {
    transform: scale(1.1);
}

.upload-text {
    font-size: 1.75rem;
    color: var(--text);
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    flex-wrap: wrap;
    font-weight: 500;
}

.upload-main-text {
    font-weight: 600;
}

.upload-or {
    color: var(--text-light);
    font-weight: 400;
}

.upload-link {
    color: var(--primary-color);
    font-weight: 600;
    text-decoration: underline;
    cursor: pointer;
}

.upload-hint {
    color: var(--text-light);
    font-size: 0.95rem;
    margin-top: 0.5rem;
}

/* Settings Section */
.settings-section {
    margin-top: 2rem;
    padding: 2rem;
    background: var(--surface);
    border-radius: 16px;
    border: 1px solid var(--border);
}

.settings-section h3 {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    color: var(--text);
    font-weight: 600;
    text-align: center;
}

.settings-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
    margin-bottom: 1.5rem;
}

/* Advanced Options Section */
.advanced-options {
    margin-top: 1.5rem;
    margin-bottom: 1.5rem;
    border: 1px solid var(--border);
    border-radius: 12px;
    background: var(--surface);
    overflow: hidden;
}

.advanced-options-toggle {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 1.5rem;
    cursor: pointer;
    font-weight: 600;
    color: var(--text);
    user-select: none;
    transition: background-color 0.2s ease;
    list-style: none;
}

.advanced-options-toggle:hover {
    background: var(--background);
}

.advanced-options-toggle::-webkit-details-marker {
    display: none;
}

.advanced-options-toggle::marker {
    display: none;
}

.advanced-options-toggle::before {
    content: '▶';
    display: inline-block;
    margin-right: 0.5rem;
    transition: transform 0.2s ease;
    font-size: 0.75rem;
    color: var(--primary-color);
}

.advanced-options[open] .advanced-options-toggle::before {
    transform: rotate(90deg);
}

.advanced-options-count {
    font-size: 0.875rem;
    color: var(--text-light);
    font-weight: normal;
}

.advanced-options-content {
    padding: 1rem 1.5rem;
    border-top: 1px solid var(--border);
}

.setting-item {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    padding: 1rem;
    background: var(--background);
    border-radius: 12px;
    border: 1px solid var(--border);
    cursor: pointer;
    transition: all 0.3s ease;
    user-select: none;
}

/* Compact variant for minimal inline options (e.g., Auto-start) */
.setting-item.compact {
    padding: 0.35rem 0;
    background: transparent;
    border: none;
}
.setting-item.compact input[type="checkbox"] {
    width: 16px;
    height: 16px;
    margin-top: 0;
}
.setting-item.compact .setting-title {
    font-size: 0.9rem;
}
.setting-item.compact .setting-desc {
    font-size: 0.75rem;
}

.setting-item:hover {
    border-color: var(--primary-color);
    background: var(--surface);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px var(--shadow);
}

.setting-item input[type="checkbox"] {
    width: 20px;
    height: 20px;
    cursor: pointer;
    accent-color: var(--primary-color);
    flex-shrink: 0;
    margin-top: 2px;
}

.setting-label {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.setting-title {
    font-weight: 600;
    color: var(--text);
    font-size: 1rem;
}

.setting-desc {
    font-size: 0.875rem;
    color: var(--text-light);
    line-height: 1.4;
}

.setting-item:has(input:checked) {
    border-color: var(--primary-color);
    background: rgba(37, 99, 235, 0.05);
}

.start-btn {
    padding: 1rem 2rem;
    font-size: 1.1rem;
    font-weight: 600;
    border-radius: 12px;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

.start-btn:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(37, 99, 235, 0.4);
}

.start-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Cleaning Mode Selector */
.cleaning-mode-selector {
    margin-bottom: 1.5rem;
}

.mode-options-container {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.mode-option {
    flex: 1;
    min-width: 200px;
    cursor: pointer;
}

.mode-option input[type="radio"] {
    display: none;
}

.mode-label {
    display: block;
    padding: 1rem 1.5rem;
    background: var(--surface);
    border: 2px solid var(--border);
    border-radius: 12px;
    transition: all 0.3s ease;
    cursor: pointer;
}

.mode-option:hover .mode-label {
    border-color: var(--primary-color);
    box-shadow: 0 2px 8px var(--shadow);
}

.mode-option input[type="radio"]:checked + .mode-label {
    border-color: var(--primary-color);
    background: rgba(37, 99, 235, 0.1);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.2);
}

.mode-title {
    display: block;
    font-weight: 600;
    color: var(--text);
    font-size: 1rem;
    margin-bottom: 0.25rem;
}

.mode-desc {
    display: block;
    font-size: 0.875rem;
    color: var(--text-light);
}

.beta-badge {
    display: inline-block;
    padding: 0.125rem 0.5rem;
    background: var(--primary-color);
    color: white;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 600;
    margin-left: 0.5rem;
}

.mode-note {
    text-align: center;
    font-size: 0.875rem;
    color: var(--text-light);
    margin-top: 0.5rem;
}

/* Cleaning Temperament Slider */
.cleaning-temperament-selector {
    margin-bottom: 1.5rem;
}

.temperament-slider-container {
    margin-top: 0.75rem;
}

.temperament-slider {
    width: 100%;
    height: 8px;
    border-radius: 4px;
    background: var(--border);
    outline: none;
    -webkit-appearance: none;
    appearance: none;
    margin-bottom: 0.5rem;
    transition: background 0.3s ease;
}

.temperament-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--primary-color);
    cursor: pointer;
    box-shadow: 0 2px 6px var(--shadow);
    transition: all 0.2s ease;
}

.temperament-slider::-webkit-slider-thumb:hover {
    transform: scale(1.1);
    box-shadow: 0 3px 8px var(--shadow-lg);
}

.temperament-slider::-moz-range-thumb {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--primary-color);
    cursor: pointer;
    border: none;
    box-shadow: 0 2px 6px var(--shadow);
    transition: all 0.2s ease;
}

.temperament-slider::-moz-range-thumb:hover {
    transform: scale(1.1);
    box-shadow: 0 3px 8px var(--shadow-lg);
}

.temperament-slider::-moz-range-track {
    height: 8px;
    border-radius: 4px;
    background: var(--border);
}

.temperament-labels {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.75rem;
    font-size: 0.875rem;
}

.temperament-label {
    color: var(--text-light);
    font-weight: 500;
    cursor: pointer;
    transition: color 0.2s ease;
}

.temperament-label:hover {
    color: var(--primary-color);
}

.temperament-description {
    font-size: 0.875rem;
    color: var(--text-light);
    font-style: italic;
    padding: 0.5rem;
    background: var(--surface);
    border-radius: 6px;
    border-left: 3px solid var(--primary-color);
    margin-top: 0.5rem;
    transition: all 0.3s ease;
}

/* Smart Mode Warning */
.smart-mode-warning {
    display: flex;
    gap: 1rem;
    padding: 1rem 1.5rem;
    background: rgba(74, 144, 226, 0.1);
    border: 1px solid var(--primary-color);
    border-radius: 12px;
    margin-bottom: 1.5rem;
}

.warning-icon {
    font-size: 1.5rem;
    flex-shrink: 0;
}

.warning-content {
    flex: 1;
}

.warning-content strong {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text);
}

.warning-content ul {
    margin: 0.5rem 0;
    padding-left: 1.5rem;
    color: var(--text-light);
}

.warning-content li {
    margin-bottom: 0.25rem;
}

.warning-note {
    margin-top: 0.75rem;
    font-size: 0.875rem;
    color: var(--text-light);
    font-style: italic;
}

/* Smart Progress */
.smart-progress {
    margin-bottom: 1.5rem;
    padding: 1rem;
    background: var(--surface);
    border-radius: 12px;
    border: 1px solid var(--border);
}

.progress-bar-container {
    width: 100%;
    height: 8px;
    background: var(--border);
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 0.75rem;
}

.progress-bar {
    height: 100%;
    background: var(--primary-color);
    border-radius: 4px;
    transition: width 0.3s ease;
    width: 0%;
}

.progress-text {
    text-align: center;
    color: var(--text-light);
    font-size: 0.875rem;
    margin-bottom: 0.75rem;
}

.cancel-btn {
    width: 100%;
    max-width: 200px;
    margin: 0 auto;
    display: block;
}

/* Mode Badge */
.mode-badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 6px;
    font-size: 0.75rem;
    font-weight: 600;
    margin-left: 0.75rem;
}

.mode-badge.smart {
    background: rgba(139, 92, 246, 0.2);
    color: #8b5cf6;
    border: 1px solid rgba(139, 92, 246, 0.3);
}

.mode-badge.fast {
    background: rgba(74, 144, 226, 0.2);
    color: #4a90e2;
    border: 1px solid rgba(74, 144, 226, 0.3);
}

.mode-badge.fallback {
    background: rgba(245, 158, 11, 0.2);
    color: #f59e0b;
    border: 1px solid rgba(245, 158, 11, 0.3);
}

.file-list {
    margin-top: 1.5rem;
}

.file-list h3 {
    margin-bottom: 1rem;
    color: var(--text);
    font-size: 1.25rem;
}

.file-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem 1.5rem;
    background: var(--surface);
    border-radius: 12px;
    margin-bottom: 0.75rem;
    border: 1px solid var(--border);
    transition: all 0.3s ease;
}

.file-item:hover {
    box-shadow: 0 2px 8px var(--shadow);
    transform: translateX(5px);
}

.file-name {
    flex: 1;
    font-weight: 500;
    color: var(--text);
}

.file-size {
    color: var(--text-light);
    font-size: 0.9rem;
}

.remove-file {
    background: var(--error);
    color: white;
    border: none;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    cursor: pointer;
    font-size: 1.5rem;
    line-height: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.remove-file:hover {
    background: #dc2626;
    transform: scale(1.1);
}

/* Results Section */
.results-section {
    padding: 4rem 0;
    background: var(--surface);
}

.results-section h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: var(--text);
    font-weight: 700;
}

.loading {
    text-align: center;
    padding: 3rem;
    color: var(--text-light);
    font-size: 1.25rem;
}

.stats-summary {
    background: var(--background);
    padding: 2.5rem;
    border-radius: 16px;
    box-shadow: 0 4px 20px var(--shadow);
    margin-bottom: 2rem;
    border: 1px solid var(--border);
}

.stats-summary h3 {
    margin-bottom: 1.5rem;
    color: var(--text);
    font-size: 1.5rem;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 1rem;
}

.stat-item {
    text-align: center;
    padding: 1.5rem;
    background: var(--surface);
    border-radius: 12px;
    border: 1px solid var(--border);
    transition: transform 0.3s ease;
}

.stat-item:hover {
    transform: translateY(-3px);
}

.stat-value {
    display: block;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

.stat-label {
    display: block;
    color: var(--text-light);
    font-size: 0.9rem;
    margin-top: 0.5rem;
}

.result-card {
    background: var(--background);
    padding: 2.5rem;
    border-radius: 16px;
    box-shadow: 0 4px 20px var(--shadow);
    margin-bottom: 2rem;
    border: 1px solid var(--border);
}

.result-card.error {
    border-left: 4px solid var(--error);
}

.result-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.result-header h4 {
    color: var(--text);
    font-size: 1.5rem;
    font-weight: 600;
}

.result-stats {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.result-stats span {
    background: var(--surface);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.85rem;
    color: var(--text-light);
    border: 1px solid var(--border);
}

.error-message {
    color: var(--error);
    margin-top: 0.5rem;
}

.result-content {
    margin-top: 1.5rem;
}

.text-preview {
    background: var(--surface);
    border-radius: 12px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    max-height: 400px;
    overflow-y: auto;
    border: 1px solid var(--border);
}

.text-preview pre {
    margin: 0;
    font-family: 'Monaco', 'Courier New', monospace;
    font-size: 0.9rem;
    color: var(--text);
    white-space: pre-wrap;
    word-wrap: break-word;
}

.result-actions {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

/* Side-by-side diff container */
.diff-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-bottom: 1rem;
}

.diff-column {
    display: flex;
    flex-direction: column;
    background: var(--surface);
    border-radius: 12px;
    border: 1px solid var(--border);
    overflow: hidden;
}

.diff-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.5rem;
    background: var(--background);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 10;
}

.diff-header h5 {
    margin: 0;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text);
}

.diff-column.original-column .diff-header h5 {
    color: var(--error);
}

.diff-column.cleaned-column .diff-header h5 {
    color: var(--success);
}

.diff-actions {
    display: flex;
    gap: 0.5rem;
}

.diff-actions .btn {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

.diff-content {
    flex: 1;
    overflow-y: auto;
    max-height: 600px;
    padding: 1rem;
    background: var(--surface);
}

.text-preview-content {
    margin: 0;
    font-family: 'Monaco', 'Courier New', monospace;
    font-size: 0.9rem;
    color: var(--text);
    white-space: pre-wrap;
    word-wrap: break-word;
    line-height: 1.6;
}

/* Virtualization styles */
.virtualized-container {
    position: relative;
}

.virtualized-spacer-top,
.virtualized-spacer-bottom {
    width: 100%;
}

.virtualized-content {
    margin: 0;
}

/* Stats line */
.stats-line {
    padding: 0.75rem 1rem;
    background: var(--surface);
    border-radius: 8px;
    font-size: 0.875rem;
    color: var(--text-light);
    border: 1px solid var(--border);
    margin-top: 0.5rem;
    text-align: center;
}

.btn {
    display: inline-block;
    padding: 0.875rem 1.75rem;
    border-radius: 10px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    font-size: 1rem;
    font-family: inherit;
}

.btn-primary {
    background: var(--primary-color);
    color: white;
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px var(--shadow-lg);
}

.btn-secondary {
    background: var(--surface);
    color: var(--text);
    border: 2px solid var(--border);
}

.btn-secondary:hover {
    background: var(--background);
    border-color: var(--primary-color);
    color: var(--primary-color);
    transform: translateY(-2px);
}

/* Features Section */
.features {
    padding: 4rem 0;
}

.features h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: var(--text);
    font-weight: 700;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: var(--surface);
    padding: 2.5rem;
    border-radius: 16px;
    box-shadow: 0 4px 20px var(--shadow);
    transition: all 0.3s ease;
    text-align: center;
    border: 1px solid var(--border);
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 30px var(--shadow-lg);
}

.feature-icon {
    font-size: 3.5rem;
    margin-bottom: 1rem;
}

.feature-card h3 {
    margin-bottom: 0.75rem;
    color: var(--text);
    font-size: 1.25rem;
    font-weight: 600;
}

.feature-card p {
    color: var(--text-light);
    line-height: 1.6;
}

/* Demo Section */
.demo {
    padding: 4rem 0;
    background: var(--surface);
}

.demo h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: var(--text);
    font-weight: 700;
}

.demo-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.demo-panel {
    background: var(--background);
    padding: 2rem;
    border-radius: 16px;
    box-shadow: 0 4px 20px var(--shadow);
    border: 1px solid var(--border);
}

.demo-panel h3 {
    margin-bottom: 1rem;
    color: var(--text);
    font-weight: 600;
}

.demo-panel pre {
    background: var(--surface);
    padding: 1.5rem;
    border-radius: 12px;
    overflow-x: auto;
    font-size: 0.9rem;
    border: 1px solid var(--border);
}

.demo-panel code {
    font-family: 'Monaco', 'Courier New', monospace;
    color: var(--text);
}

.demo-stats {
    display: flex;
    justify-content: center;
    gap: 3rem;
    flex-wrap: wrap;
    margin-top: 2rem;
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

.stat-label {
    display: block;
    color: var(--text-light);
    font-size: 0.9rem;
    margin-top: 0.5rem;
}

/* CLI Section */
.cli-section {
    padding: 4rem 0;
    text-align: center;
}

.cli-section h2 {
    font-size: 2rem;
    margin-bottom: 1rem;
    color: var(--text);
    font-weight: 700;
}

.cli-section p {
    color: var(--text-light);
    font-size: 1.1rem;
}

.cli-section a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
}

.cli-section a:hover {
    text-decoration: underline;
}

/* How It Works Section */
.how-it-works {
    padding: 4rem 0;
    background: var(--background);
}

.how-it-works h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 2rem;
    color: var(--text);
    font-weight: 700;
}

.how-it-works-content {
    max-width: 900px;
    margin: 0 auto;
}

.how-it-works-intro {
    text-align: center;
    font-size: 1.2rem;
    color: var(--text-light);
    margin-bottom: 3rem;
    line-height: 1.7;
}

.how-it-works-steps {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    margin-bottom: 2rem;
}

.how-it-works-step {
    display: flex;
    gap: 2rem;
    align-items: flex-start;
    background: var(--surface);
    padding: 2rem;
    border-radius: 16px;
    box-shadow: 0 4px 20px var(--shadow);
    border: 1px solid var(--border);
    transition: all 0.3s ease;
}

.how-it-works-step:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px var(--shadow-lg);
}

.step-number {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--primary-color);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    flex-shrink: 0;
}

.step-content {
    flex: 1;
}

.step-content h3 {
    font-size: 1.5rem;
    margin-bottom: 0.75rem;
    color: var(--text);
    font-weight: 600;
}

.step-content p {
    color: var(--text-light);
    line-height: 1.7;
    margin-bottom: 0.75rem;
}

.step-list {
    margin-top: 1rem;
    padding-left: 1.5rem;
    color: var(--text-light);
    line-height: 1.8;
}

.step-list li {
    margin-bottom: 0.5rem;
}

.step-list strong {
    color: var(--text);
    font-weight: 600;
}

.how-it-works-note {
    background: rgba(37, 99, 235, 0.1);
    border-left: 4px solid var(--primary-color);
    padding: 1.5rem;
    border-radius: 12px;
    margin-top: 2rem;
}

.how-it-works-note p {
    margin: 0;
    color: var(--text);
    line-height: 1.7;
    font-size: 1rem;
}

.how-it-works-note strong {
    color: var(--primary-color);
}

@media (max-width: 768px) {
    .header-content {
        grid-template-columns: 1fr;
        gap: 1rem;
        align-items: center;
    }
    
    .header-main {
        grid-column: 1;
        order: 1;
        width: 100%;
    }
    
    .header-controls {
        grid-column: 1;
        order: 2;
        flex-direction: row;
        justify-content: center;
        gap: 0.75rem;
        margin-top: 0.5rem;
        justify-self: center;
    }
    
    .translate-widget {
        flex: 0 0 auto;
    }
    
    #google_translate_element .goog-te-combo {
        width: 45px !important;
        height: 45px !important;
    }
    
    .theme-toggle {
        position: static;
        width: 45px;
        height: 45px;
        font-size: 1.3rem;
    }
    
    .logo {
        font-size: 2.5rem;
    }
    
    .tagline {
        font-size: 1.1rem;
    }
    
    .diff-container {
        grid-template-columns: 1fr;
    }
    
    .diff-content {
        max-height: 400px;
    }
    
    .how-it-works-step {
        flex-direction: column;
        gap: 1rem;
    }
    
    .step-number {
        align-self: flex-start;
    }
    
    .how-it-works h2 {
        font-size: 2rem;
    }
    
    .how-it-works-intro {
        font-size: 1.1rem;
    }
}

/* Footer */
.footer {
    background: var(--surface);
    color: var(--text);
    padding: 3rem 0;
    border-top: 1px solid var(--border);
}

.footer-content {
    text-align: center;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin: 1.5rem 0;
    flex-wrap: wrap;
}

.footer-links a {
    color: var(--text-light);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: var(--primary-color);
}

.footer-copyright {
    opacity: 0.7;
    font-size: 0.9rem;
    margin-top: 1rem;
    color: var(--text-light);
}

.footer-author {
    margin-top: 0.5rem;
    font-size: 0.9rem;
    color: var(--text-light);
}

.footer-author strong {
    color: var(--text);
    font-weight: 600;
}

.footer-author a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s ease;
}

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

/* Product Hunt Badge */
.product-hunt-badge {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border);
}

.product-hunt-badge a {
    display: inline-block;
    transition: transform 0.3s ease, opacity 0.3s ease;
    text-decoration: none;
}

.product-hunt-badge a:hover {
    transform: scale(1.05);
    opacity: 0.9;
}

.product-hunt-badge img {
    display: block;
    border-radius: 8px;
    box-shadow: 0 2px 8px var(--shadow);
}

.product-hunt-footer {
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 2rem 0 1rem;
}

.product-hunt-footer a {
    display: inline-block;
    transition: transform 0.3s ease, opacity 0.3s ease;
    text-decoration: none;
}

.product-hunt-footer a:hover {
    transform: scale(1.05);
    opacity: 0.9;
}

.product-hunt-footer img {
    display: block;
    border-radius: 6px;
    opacity: 0.9;
}

[data-theme="dark"] .product-hunt-badge img,
[data-theme="dark"] .product-hunt-footer img {
    opacity: 0.95;
}

/* Responsive */
@media (max-width: 768px) {
    .logo {
        font-size: 2rem;
    }
    
    .tagline {
        font-size: 1rem;
    }
    
    .upload-card {
        padding: 2rem 1.5rem;
    }
    
    .upload-area {
        padding: 3rem 1rem;
        min-height: 180px;
    }

    .upload-icon {
        font-size: 4rem;
    }

    .upload-text {
        font-size: 1.25rem;
    }
    
    .upload-options {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }
    
    .result-header {
        flex-direction: column;
    }
    
    .result-actions {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
        text-align: center;
    }
    
    .demo-container {
        grid-template-columns: 1fr;
    }
    
    .demo-stats {
        gap: 2rem;
    }
    
    .product-hunt-badge {
        margin-top: 2rem;
        padding-top: 1.5rem;
    }
    
    .product-hunt-badge img,
    .product-hunt-footer img {
        width: 200px;
        height: auto;
    }
}

/* Toast Notifications */
.toast {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    background: var(--background);
    color: var(--text);
    padding: 1rem 1.5rem;
    border-radius: 12px;
    box-shadow: 0 4px 20px var(--shadow-lg);
    border: 1px solid var(--border);
    z-index: 1000;
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.3s ease;
    max-width: 300px;
    font-weight: 500;
}

.toast.show {
    opacity: 1;
    transform: translateY(0);
}

.toast-success {
    border-left: 4px solid var(--success);
}

.toast-error {
    border-left: 4px solid var(--error);
}

/* Support Snackbar */
.support-snackbar {
    position: fixed;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    z-index: 10000;
    opacity: 0;
    transition: all 0.3s ease;
    max-width: 500px;
    width: calc(100% - 40px);
}

.support-snackbar.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

.snackbar-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    background: var(--surface);
    border: 2px solid var(--primary-color);
    border-radius: 12px;
    padding: 1rem 1.25rem;
    box-shadow: 0 4px 20px var(--shadow-lg);
}

.snackbar-text {
    flex: 1;
    font-size: 0.95rem;
    color: var(--text);
    line-height: 1.5;
}

.snackbar-text a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    transition: opacity 0.2s ease;
}

.snackbar-text a:hover {
    opacity: 0.8;
    text-decoration: underline;
}

.snackbar-close {
    background: transparent;
    border: none;
    color: var(--text-light);
    font-size: 1.5rem;
    line-height: 1;
    cursor: pointer;
    padding: 0;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
    transition: all 0.2s ease;
    flex-shrink: 0;
}

.snackbar-close:hover {
    background: var(--border);
    color: var(--text);
}

@media (max-width: 768px) {
    .support-snackbar {
        bottom: 10px;
        width: calc(100% - 20px);
    }
    
    .snackbar-content {
        padding: 0.875rem 1rem;
    }
    
    .snackbar-text {
        font-size: 0.875rem;
    }
}

/* Error Banner */
.error-banner {
    background: var(--error);
    color: white;
    padding: 1rem;
    text-align: center;
    font-weight: 500;
}

/* Loading Animation */
.loading {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
}

.loading::after {
    content: '';
    width: 20px;
    height: 20px;
    border: 3px solid var(--border);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Scrollbar Styling */
.text-preview::-webkit-scrollbar {
    width: 8px;
}

.text-preview::-webkit-scrollbar-track {
    background: var(--surface);
    border-radius: 4px;
}

.text-preview::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 4px;
}

.text-preview::-webkit-scrollbar-thumb:hover {
    background: var(--text-light);
}

/* Smooth Scroll */
html {
    scroll-behavior: smooth;
}

/* Focus States for Accessibility */
.btn:focus,
.theme-toggle:focus,
.remove-file:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 3rem;
    color: var(--text-light);
}

.empty-state-icon {
    font-size: 4rem;
    margin-bottom: 1rem;
    opacity: 0.5;
}

@media (max-width: 480px) {
    .upload-card h2 {
        font-size: 2rem;
    }

    .upload-icon {
        font-size: 3rem;
    }

    .upload-text {
        font-size: 1.1rem;
        flex-direction: column;
        gap: 0.25rem;
    }

    .toast {
        right: 1rem;
        left: 1rem;
        max-width: none;
    }
    
    .header-controls {
        flex-direction: row;
        gap: 0.5rem;
    }
    
    #google_translate_element .goog-te-combo {
        width: 45px !important;
        height: 45px !important;
    }
    
    .theme-toggle {
        width: 45px;
        height: 45px;
    }
    
    .mode-options-container {
        flex-direction: column;
        gap: 0.75rem;
    }
    
    .mode-option {
        min-width: 100%;
        width: 100%;
    }
}

/* Support Button */
.support-container {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    z-index: 999;
}

.support-btn {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border: none;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
    box-shadow: 0 4px 20px rgba(102, 126, 234, 0.4);
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.support-btn:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 25px rgba(102, 126, 234, 0.6);
}

.support-btn:active {
    transform: scale(0.95);
}

.support-menu {
    position: absolute;
    bottom: 70px;
    right: 0;
    background: var(--background);
    border: 1px solid var(--border);
    border-radius: 16px;
    box-shadow: 0 8px 32px var(--shadow-lg);
    padding: 1rem;
    min-width: 240px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all 0.3s ease;
    z-index: 1000;
}

.support-menu.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.support-menu-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--border);
}

.support-menu-header strong {
    color: var(--text);
    font-size: 1rem;
}

.support-close {
    background: none;
    border: none;
    color: var(--text-light);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    line-height: 1;
    transition: color 0.2s ease;
}

.support-close:hover {
    color: var(--text);
}

.support-menu-links {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.support-link {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem;
    color: var(--text);
    text-decoration: none;
    border-radius: 8px;
    transition: background-color 0.2s ease;
    font-size: 0.9rem;
}

.support-link:hover {
    background: var(--surface);
}

.support-link span {
    font-size: 1.2rem;
}

.support-menu-social {
    display: flex;
    gap: 0.5rem;
    justify-content: center;
    padding-top: 0.75rem;
    border-top: 1px solid var(--border);
}

.support-social {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 8px;
    background: var(--surface);
    color: var(--text);
    text-decoration: none;
    font-size: 1.2rem;
    transition: all 0.2s ease;
}

.support-social:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-2px);
}

@media (max-width: 480px) {
    .support-container {
        bottom: 1rem;
        right: 1rem;
    }
    
    .support-btn {
        width: 48px;
        height: 48px;
        font-size: 1.25rem;
    }
    
    .support-menu {
        bottom: 60px;
        right: 0;
        left: auto;
        min-width: 200px;
    }
}