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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    color: #333;
    transition: all 0.3s ease;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 15px;
}

.header {
    text-align: center;
    margin-bottom: 20px;
    color: white;
}

.header h1 {
    font-size: 2.5rem;
    margin-bottom: 8px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.header p {
    font-size: 1.2rem;
    opacity: 0.9;
}

.main-content {
    background: rgba(255, 255, 255, 0.95);
    border-radius: 20px;
    padding: 25px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(10px);
}

.input-methods {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 15px;
    margin-bottom: 20px;
}

.upload-zone {
    border: 3px dashed #ddd;
    border-radius: 15px;
    padding: 25px;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
}

.upload-zone:hover, .upload-zone.dragover {
    border-color: #4facfe;
    background: linear-gradient(135deg, #e3f2fd 0%, #bbdefb 100%);
    transform: translateY(-2px);
}

.upload-icon {
    font-size: 3rem;
    margin-bottom: 15px;
}

.upload-text {
    font-size: 1.2rem;
    font-weight: 600;
    color: #555;
    margin-bottom: 10px;
}

.file-input {
    display: none;
}

.url-input-section, .clipboard-section {
    background: linear-gradient(135deg, #ffecd2 0%, #fcb69f 100%);
    border-radius: 15px;
    padding: 15px;
    text-align: center;
}

.url-input-group {
    display: flex;
    gap: 10px;
    margin-top: 10px;
}

.url-input-group input {
    flex: 1;
    padding: 10px;
    border: 2px solid #ddd;
    border-radius: 8px;
    font-size: 14px;
}

.btn-small {
    padding: 10px 15px;
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    color: white;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.3s ease;
}

.btn-small:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(79, 172, 254, 0.3);
}

.btn-clipboard {
    background: linear-gradient(135deg, #a8edea 0%, #fed6e3 100%);
    color: #333;
    border: none;
    border-radius: 12px;
    padding: 15px 25px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-clipboard:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(168, 237, 234, 0.3);
}

.controls-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 15px;
    margin-bottom: 20px;
}

.control-group {
    background: linear-gradient(135deg, #ffecd2 0%, #fcb69f 100%);
    border-radius: 15px;
    padding: 18px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

.control-group h3 {
    color: #333;
    margin-bottom: 15px;
    font-size: 1.1rem;
    border-bottom: 2px solid rgba(255, 255, 255, 0.3);
    padding-bottom: 8px;
}

.form-group {
    margin-bottom: 12px;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: 600;
    color: #555;
}

.form-group input, .form-group select, .form-group textarea {
    width: 100%;
    padding: 8px;
    border: 2px solid #ddd;
    border-radius: 8px;
    font-size: 14px;
    transition: border-color 0.3s ease;
}

.format-grid select {
    width: 100%;
    padding: 8px;
    border: 2px solid #ddd;
    border-radius: 8px;
    font-size: 14px;
    transition: border-color 0.3s ease;
}

.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
    outline: none;
    border-color: #4facfe;
    box-shadow: 0 0 0 3px rgba(79, 172, 254, 0.1);
}

.format-grid select:focus {
    outline: none;
    border-color: #4facfe;
    box-shadow: 0 0 0 3px rgba(79, 172, 254, 0.1);
}

.checkbox-group {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
}

.checkbox-group input[type="checkbox"] {
    width: auto;
    margin: 0;
}

.preset-buttons {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
}

.preset-btn {
    padding: 12px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.3s ease;
    font-size: 12px;
}

.preset-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.3);
}

.action-buttons {
    display: flex;
    gap: 15px;
    justify-content: center;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.btn {
    padding: 12px 25px;
    border: none;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.btn-primary {
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    color: white;
}

.btn-secondary {
    background: linear-gradient(135deg, #ffecd2 0%, #fcb69f 100%);
    color: #333;
}

.btn:hover:not(:disabled) {
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.batch-info {
    text-align: center;
    background: linear-gradient(135deg, #a8edea 0%, #fed6e3 100%);
    padding: 12px;
    border-radius: 10px;
    margin-bottom: 15px;
    font-weight: 600;
    display: flex;
    justify-content: space-around;
}

.progress-bar {
    width: 100%;
    height: 30px;
    background: rgba(255, 255, 255, 0.3);
    border-radius: 15px;
    margin: 20px 0;
    overflow: hidden;
    position: relative;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    width: 0%;
    transition: width 0.3s ease;
    border-radius: 15px;
}

.progress-text {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: #333;
    font-weight: 600;
    font-size: 14px;
}

.error-message {
    background: linear-gradient(135deg, #ff6b6b 0%, #ee5a52 100%);
    color: white;
    padding: 15px;
    border-radius: 8px;
    margin: 10px 0;
    display: none;
    text-align: center;
    font-weight: 600;
}

.success-message {
    background: linear-gradient(135deg, #11998e 0%, #38ef7d 100%);
    color: white;
    padding: 15px;
    border-radius: 8px;
    margin: 10px 0;
    display: none;
    text-align: center;
    font-weight: 600;
}

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

.preview-card {
    background: white;
    border-radius: 15px;
    padding: 20px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.preview-card:hover {
    transform: translateY(-5px);
}

.preview-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: 10px;
    margin-bottom: 15px;
}

.preview-info h4 {
    color: #333;
    margin-bottom: 15px;
    font-size: 1.1rem;
}

.preview-details {
    font-size: 14px;
    color: #666;
    margin-bottom: 15px;
    line-height: 1.6;
}

.preview-details p {
    margin-bottom: 5px;
}

.download-btn {
    width: 100%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: 8px;
    padding: 10px;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.3s ease;
}

.download-btn:hover {
    background: linear-gradient(135deg, #764ba2 0%, #667eea 100%);
    transform: translateY(-2px);
}

.accessibility-features {
    position: fixed;
    top: 20px;
    right: 20px;
    background: rgba(255, 255, 255, 0.95);
    padding: 15px;
    border-radius: 12px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    z-index: 1000;
    display: flex;
    gap: 10px;
    flex-direction: column;
}

.accessibility-btn {
    padding: 8px 12px;
    background: #f0f0f0;
    border: 1px solid #ddd;
    border-radius: 6px;
    cursor: pointer;
    font-size: 12px;
    transition: all 0.3s ease;
}

.accessibility-btn:hover {
    background: #e0e0e0;
}

/* Accessibility States */
.high-contrast {
    filter: contrast(150%) brightness(1.2);
}

.large-text {
    font-size: 120%;
}

.focus-outline *:focus {
    outline: 3px solid #4facfe !important;
    outline-offset: 2px !important;
}

/* Responsive Design */
@media (max-width: 1200px) {
    .controls-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    }
}

@media (max-width: 768px) {
    .input-methods {
        grid-template-columns: 1fr;
    }
    
    .header h1 {
        font-size: 2rem;
    }
    
    .main-content {
        padding: 15px;
    }
    
    .controls-grid {
        grid-template-columns: 1fr;
    }
    
    .action-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .batch-info {
        flex-direction: column;
        gap: 10px;
    }
    
    .accessibility-features {
        top: 10px;
        right: 10px;
        padding: 10px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 10px;
    }
    
    .header h1 {
        font-size: 1.8rem;
    }
    
    .preset-buttons {
        grid-template-columns: 1fr;
    }
}