:root {
    --primary-color: #3498db;
    --primary-hover: #2980b9;
    --secondary-color: #2ecc71;
    --secondary-hover: #27ae60;
    --danger-color: #e74c3c;
    --danger-hover: #c0392b;
    --text-color: #333;
    --light-text: #7f8c8d;
    --bg-color: #f5f5f5;
    --card-bg: white;
    --border-color: #ddd;
    --shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
}

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

header {
    text-align: center;
    margin-bottom: 30px;
    position: relative;
}

header h1 {
    color: #2c3e50;
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.language-switcher {
    position: absolute;
    top: 0;
    left: 20px;
    display: flex;
    gap: 5px;
}

.language-switcher button {
    padding: 5px 10px;
    border: 1px solid var(--border-color);
    background: white;
    cursor: pointer;
    border-radius: 3px;
}

.language-switcher button.active {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.upload-container {
    background-color: var(--card-bg);
    border-radius: 10px;
    padding: 30px;
    box-shadow: var(--shadow);
    margin-bottom: 20px;
}

.drop-area {
    border: 2px dashed var(--primary-color);
    border-radius: 8px;
    padding: 40px;
    text-align: center;
    transition: var(--transition);
    cursor: pointer;
}

.drop-area:hover {
    border-color: var(--primary-hover);
    background-color: rgba(52, 152, 219, 0.05);
}

.drop-area.highlight {
    border-color: var(--secondary-color);
    background-color: rgba(46, 204, 113, 0.1);
}

.drop-icon {
    font-size: 48px;
    display: block;
    margin-bottom: 15px;
    color: var(--primary-color);
}

#fileInput {
    display: none;
}

.selected-files {
    margin-top: 20px;
    max-height: 200px;
    overflow-y: auto;
}

.file-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px;
    border-bottom: 1px solid var(--border-color);
}

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

.file-info {
    display: flex;
    align-items: center;
    gap: 10px;
}

.file-icon {
    color: var(--primary-color);
}

.file-name {
    max-width: 300px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

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

.remove-file {
    color: var(--danger-color);
    cursor: pointer;
    background: none;
    border: none;
    font-size: 1.1em;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background-color: var(--primary-color);
    color: white;
    padding: 10px 20px;
    border-radius: 5px;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    font-size: 16px;
    justify-content: center;
}

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

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

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

.btn.secondary {
    background-color: #f39c12;
}

.btn.secondary:hover {
    background-color: #e67e22;
}

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

.btn.danger:hover {
    background-color: var(--danger-hover);
}

.settings {
    background-color: var(--card-bg);
    border-radius: 10px;
    padding: 20px;
    box-shadow: var(--shadow);
    margin-bottom: 20px;
}

.settings-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 20px;
}

.setting {
    margin-bottom: 15px;
}

.setting label {
    display: block;
    margin-bottom: 8px;
    font-weight: bold;
}

.setting input[type="range"] {
    width: 100%;
    margin-bottom: 5px;
}

.setting input[type="number"] {
    width: 100%;
    padding: 8px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
}

.setting select {
    width: 100%;
    padding: 8px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background-color: white;
}

.action-buttons {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.results-container {
    background-color: var(--card-bg);
    border-radius: 10px;
    padding: 20px;
    box-shadow: var(--shadow);
}

.results-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    flex-wrap: wrap;
    gap: 10px;
}

.summary {
    background-color: rgba(52, 152, 219, 0.1);
    padding: 10px 15px;
    border-radius: 5px;
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
}

.summary-item {
    display: flex;
    align-items: center;
    gap: 5px;
}

.results {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
}

.result-item {
    background-color: var(--card-bg);
    border-radius: 8px;
    padding: 15px;
    box-shadow: var(--shadow);
    display: flex;
    flex-direction: column;
}

.result-image-container {
    position: relative;
    margin-bottom: 10px;
}

.result-image {
    max-width: 100%;
    border-radius: 5px;
    display: block;
}

.compare-btn {
    position: absolute;
    top: 10px;
    left: 10px;
    background-color: rgba(0, 0, 0, 0.7);
    color: white;
    border: none;
    border-radius: 3px;
    padding: 5px 10px;
    cursor: pointer;
    font-size: 12px;
    display: flex;
    align-items: center;
    gap: 5px;
}

.result-info {
    display: flex;
    justify-content: space-between;
    margin-bottom: 8px;
    flex-wrap: wrap;
    gap: 5px;
}

.result-info-item {
    display: flex;
    align-items: center;
    gap: 5px;
}

.download-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    width: 100%;
    text-align: center;
    padding: 8px;
    background-color: var(--secondary-color);
    color: white;
    text-decoration: none;
    border-radius: 5px;
    transition: var(--transition);
    margin-top: auto;
}

.download-btn:hover {
    background-color: var(--secondary-hover);
}

.comparison-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.8);
    z-index: 1000;
    overflow: auto;
}

.modal-content {
    background-color: var(--card-bg);
    margin: 5% auto;
    padding: 20px;
    border-radius: 8px;
    width: 90%;
    max-width: 1000px;
    position: relative;
}

.close-btn {
    position: absolute;
    top: 15px;
    left: 15px;
    font-size: 28px;
    font-weight: bold;
    color: var(--text-color);
    cursor: pointer;
}

.comparison-container {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.comparison-slider {
    position: relative;
    width: 100%;
    overflow: hidden;
    border-radius: 5px;
}

.comparison-before {
    width: 100%;
    height: auto;
    display: block;
}

.comparison-after {
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    width: 50%;
    overflow: hidden;
}

.comparison-after img {
    height: 100%;
    width: auto;
    max-width: none;
    display: block;
}

.comparison-handle {
    position: absolute;
    top: 0;
    bottom: 0;
    left: 50%;
    width: 4px;
    background-color: white;
    cursor: ew-resize;
    transform: translateX(-50%);
}

.comparison-handle::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 30px;
    height: 30px;
    background-color: white;
    border-radius: 50%;
    transform: translate(-50%, -50%);
    box-shadow: 0 0 5px rgba(0, 0, 0, 0.5);
}

.comparison-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
    margin-top: 20px;
}

.stat-card {
    background-color: rgba(52, 152, 219, 0.1);
    padding: 15px;
    border-radius: 5px;
    text-align: center;
}

.stat-value {
    font-size: 1.5em;
    font-weight: bold;
    margin: 5px 0;
}

.progress-container {
    width: 100%;
    background-color: #f1f1f1;
    border-radius: 5px;
    margin: 20px 0;
    display: none;
}

.progress-bar {
    height: 20px;
    background-color: var(--secondary-color);
    border-radius: 5px;
    width: 0;
    transition: width 0.3s;
    text-align: center;
    color: white;
    font-size: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
}

@media (max-width: 768px) {
    .results {
        grid-template-columns: 1fr;
    }
    
    .settings-grid {
        grid-template-columns: 1fr;
    }
    
    .action-buttons {
        flex-direction: column;
    }
    
    .modal-content {
        margin: 10% auto;
        width: 95%;
    }
}

/* تأثيرات التحميل */
@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.loading-spinner {
    border: 4px solid rgba(0, 0, 0, 0.1);
    border-radius: 50%;
    border-top: 4px solid var(--primary-color);
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
    margin: 20px auto;
}