/* Global Styles */
:root {
    --primary-color: #6c7ae0;
    --secondary-color: #8e44ad;
    --bg-color: #121212;
    --card-bg: #1e1e1e;
    --text-color: #f5f5f5;
    --text-secondary: #b3b3b3;
    --border-radius: 8px;
    --box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem 1rem;
}

/* Header Styles */
header {
    text-align: center;
    margin-bottom: 2rem;
}

header h1 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

header p {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

/* Upload Section */
.upload-section {
    margin-bottom: 2rem;
}

.upload-container {
    background-color: var(--card-bg);
    border: 2px dashed var(--primary-color);
    border-radius: var(--border-radius);
    padding: 2rem;
    text-align: center;
    transition: var(--transition);
    cursor: pointer;
}

.upload-container:hover {
    border-color: var(--secondary-color);
}

.upload-container.dragover {
    background-color: rgba(108, 122, 224, 0.1);
    border-color: var(--secondary-color);
}

.upload-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.upload-icon {
    width: 64px;
    height: 64px;
}

.upload-btn {
    background-color: var(--primary-color);
    color: white;
    padding: 0.75rem 1.5rem;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    font-weight: 600;
}

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

.file-info {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-top: 0.5rem;
}

/* Preview Section */
.preview-section {
    margin-bottom: 2rem;
}

.preview-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

@media (max-width: 768px) {
    .preview-container {
        grid-template-columns: 1fr;
    }
}

.original-image, .cartoon-image {
    background-color: var(--card-bg);
    border-radius: var(--border-radius);
    padding: 1rem;
    box-shadow: var(--box-shadow);
}

.original-image h3, .cartoon-image h3 {
    text-align: center;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.image-container {
    width: 100%;
    height: 300px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background-color: rgba(0, 0, 0, 0.2);
    border-radius: var(--border-radius);
}

.image-container img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}

/* Options Section */
.options-section {
    margin-bottom: 2rem;
}

.options-section h3 {
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.options-container {
    background-color: var(--card-bg);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    box-shadow: var(--box-shadow);
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

.option-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.option-group label {
    font-weight: 600;
    color: var(--text-secondary);
}

.option-buttons {
    display: flex;
    gap: 0.5rem;
}

.option-btn {
    background-color: var(--card-bg);
    border: 1px solid var(--text-secondary);
    color: var(--text-color);
    padding: 0.5rem 1rem;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    flex: 1;
}

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

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

.text-input {
    margin-top: 1rem;
}

.text-input label {
    display: block;
    margin-bottom: 0.5rem;
}

.text-input textarea {
    width: 100%;
    height: 80px;
    padding: 0.5rem;
    border-radius: var(--border-radius);
    background-color: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--text-secondary);
    color: var(--text-color);
    resize: none;
}

/* Action Section */
.action-section {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    align-items: center;
}

.action-btn {
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    color: white;
    border: none;
    padding: 1rem 2rem;
    border-radius: var(--border-radius);
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    width: 100%;
    max-width: 300px;
}

.action-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.2);
}

.action-btn:disabled {
    background: #555;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.download-options {
    display: flex;
    gap: 1rem;
    width: 100%;
    max-width: 300px;
}

.download-option-btn {
    flex: 1;
    background-color: var(--card-bg);
    border: 1px solid var(--primary-color);
    color: var(--primary-color);
    padding: 0.75rem 1rem;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    font-weight: 600;
}

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

/* Progress Overlay */
.progress-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.progress-container {
    background-color: var(--card-bg);
    border-radius: var(--border-radius);
    padding: 2rem;
    width: 90%;
    max-width: 500px;
    text-align: center;
}

.progress-container h3 {
    margin-bottom: 1.5rem;
    color: var(--primary-color);
}

.progress-bar {
    height: 10px;
    background-color: rgba(0, 0, 0, 0.2);
    border-radius: 5px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    width: 0%;
    transition: width 0.3s ease;
}

/* Footer */
footer {
    text-align: center;
    padding: 1.5rem;
    color: var(--text-secondary);
    font-size: 0.9rem;
}