/* CSS Variables */
:root {
    --bg-primary: #ffffff;
    --bg-secondary: #f5f5f5;
    --text-primary: #333333;
    --border-color: #dddddd;
}

html.dark-mode {
    --bg-primary: #333333;
    --bg-secondary: #2d2d2d;
    --text-primary: #e0e0e0;
    --border-color: #404040;
}

/* Light theme (default) */
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
    line-height: 1.6;
    margin: 0;
    padding: 20px;
    background-color: #ffffff;
    color: #333333;
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* Dark theme */
html.dark-mode body {
    background-color: #1a1a1a;
    color: #e0e0e0;
}

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

h1 {
    text-align: center;
    color: #333333;
    transition: color 0.3s ease;
    margin-bottom: 2rem;
    font-size: 3rem;
}

h1 a {
    color: inherit;
    text-decoration: none;
}

h1 a:hover {
    text-decoration: underline;
}

html.dark-mode h1 {
    color: #e0e0e0;
}

h1 {
    text-align: center;
    margin-bottom: 5px;
}

.subtitle {
    text-align: center;
    font-size: .8rem;
    font-weight: normal;
    color: #666;
    margin-top: 0;
    margin-bottom: 20px;
}

html.dark-mode .subtitle {
    color: #aaa;
}

h3, h4 {
    color: #333333;
    transition: color 0.3s ease;
    margin: 0 0 1rem 0;
}

html.dark-mode h3,
html.dark-mode h4 {
    color: #e0e0e0;
}

.main-content {
    margin-bottom: 2rem;
}

.input-output {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    width: 100%;
}

textarea#input {
    width: 100%;
    height: 400px;
    padding: 10px;
    margin: 0;
    border: 1px solid #cccccc;
    border-radius: 4px;
    font-family: monospace;
    background-color: #ffffff;
    color: #333333;
    box-sizing: border-box;
    resize: vertical;
    transition: all 0.3s ease;
}

html.dark-mode textarea#input {
    background-color: #333333;
    color: #e0e0e0;
    border-color: #404040;
}

button {
    padding: 10px 20px;
    background-color: #2196F3;
    color: #ffffff;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.3s ease;
}

button:hover {
    background-color: #1976D2;
    transform: translateY(-1px);
    box-shadow: 0 2px 5px rgba(0,0,0,0.2);
}

#output {
    width: 100%;
    min-height: 200px;
    padding: 10px;
    margin: 0;
    background-color: #ffffff;
    color: #333333;
    border: 1px solid #cccccc;
    border-radius: 4px;
    overflow-x: auto;
    font-family: monospace;
    box-sizing: border-box;
    transition: all 0.3s ease;
}

html.dark-mode #output {
    background-color: #333333;
    color: #e0e0e0;
    border-color: #404040;
}

/* Settings Panel */
.settings-panel {
    background-color: #f5f5f5;
    padding: 1.5rem;
    border-radius: 8px;
    border: 1px solid #dddddd;
    transition: all 0.3s ease;
}

html.dark-mode .settings-panel {
    background-color: #2d2d2d;
    border-color: #404040;
}

.settings-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.header-buttons {
    display: flex;
    gap: 1rem;
}

.settings-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.settings-column {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.setting {
    display: flex;
    align-items: center;
    margin-bottom: 0.5rem;
}

.setting-label {
    margin-left: 1rem;
    color: #333333;
    transition: color 0.3s ease;
}

html.dark-mode .setting-label {
    color: #e0e0e0;
}

/* Format Section */
.format-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.format-label {
    color: #333333;
    transition: color 0.3s ease;
}

html.dark-mode .format-label {
    color: #e0e0e0;
}

.format-radio-group {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 0.75rem;
    margin-top: 0.5rem;
}

.format-radio-group label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem;
    border-radius: 4px;
    background-color: #ffffff;
    border: 1px solid #dddddd;
    transition: all 0.3s ease;
    cursor: pointer;
}

html.dark-mode .format-radio-group label {
    background-color: #333333;
    border-color: #404040;
}

.format-radio-group label:hover {
    background-color: #f0f0f0;
    transform: translateY(-1px);
}

html.dark-mode .format-radio-group label:hover {
    background-color: #404040;
}

.format-radio-group input[type="radio"] {
    margin: 0;
    cursor: pointer;
}

.format-radio-group input[type="radio"]:checked + span {
    font-weight: 500;
    color: #2196F3;
}

html.dark-mode .format-radio-group input[type="radio"]:checked + span {
    color: #64B5F6;
}

/* Find & Replace Styles */
.find-replace-container {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.find-replace-controls {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.find-replace-controls > div:first-child {
    display: flex;
    gap: 0.5rem;
}

.add-rule-btn, .clear-rules-btn {
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
    border-radius: 4px;
    border: 1px solid #ddd;
    background-color: #f8f9fa;
    color: #333;
    cursor: pointer;
    transition: all 0.2s ease;
}

.add-rule-btn:hover, .clear-rules-btn:hover {
    background-color: #e9ecef;
    transform: translateY(-1px);
}

html.dark-mode .add-rule-btn,
html.dark-mode .clear-rules-btn {
    background-color: #404040;
    border-color: #555;
    color: #e0e0e0;
}

html.dark-mode .add-rule-btn:hover,
html.dark-mode .clear-rules-btn:hover {
    background-color: #4a4a4a;
}

.preset-buttons {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.preset-row {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.preset-label {
    font-weight: 500;
    color: #555;
    min-width: 80px;
    font-size: 0.9rem;
}

html.dark-mode .preset-label {
    color: #ccc;
}

.preset-btn {
    padding: 0.3rem 0.6rem;
    font-size: 0.75rem;
    border-radius: 3px;
    border: 1px solid #ccc;
    background-color: #fff;
    color: #666;
    cursor: pointer;
    transition: all 0.2s ease;
    white-space: nowrap;
}

.preset-btn:hover {
    background-color: #f0f0f0;
    border-color: #999;
}

html.dark-mode .preset-btn {
    background-color: #333;
    border-color: #555;
    color: #ccc;
}

html.dark-mode .preset-btn:hover {
    background-color: #3a3a3a;
    border-color: #666;
}

.find-replace-rules {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    max-height: 200px;
    overflow-y: auto;
}

.find-replace-rule {
    display: flex;
    gap: 0.4rem;
    align-items: center;
    padding: 0.4rem;
    background-color: #f8f9fa;
    border: 1px solid #ddd;
    border-radius: 4px;
    overflow: hidden; /* Prevent content from overflowing */
}

html.dark-mode .find-replace-rule {
    background-color: #2a2a2a;
    border-color: #444;
}

.find-replace-rule input {
    flex: 1;
    min-width: 0; /* Allow inputs to shrink below their content width */
    max-width: 120px; /* Limit maximum width */
    padding: 0.3rem;
    border: 1px solid #ccc;
    border-radius: 3px;
    font-size: 0.85rem;
}

html.dark-mode .find-replace-rule input {
    background-color: #333;
    border-color: #555;
    color: #e0e0e0;
}

.find-replace-rule .rule-arrow {
    color: #666;
    font-weight: bold;
    min-width: 15px;
    text-align: center;
    font-size: 0.9rem;
    flex-shrink: 0;
}

html.dark-mode .find-replace-rule .rule-arrow {
    color: #aaa;
}

.remove-rule-btn {
    padding: 0.2rem 0.4rem;
    background-color: #dc3545;
    color: white;
    border: none;
    border-radius: 3px;
    cursor: pointer;
    font-size: 0.75rem;
    transition: background-color 0.2s ease;
    flex-shrink: 0;
    min-width: 24px;
}

.remove-rule-btn:hover {
    background-color: #c82333;
}

/* Radio Button Group */
.setting-group {
    flex-direction: column;
    gap: 0.5rem;
}

.radio-group {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-left: 1rem;
}

.radio-group label {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    cursor: pointer;
    color: #333333;
    transition: color 0.3s ease;
}

html.dark-mode .radio-group label {
    color: #e0e0e0;
}

.radio-group input[type="radio"] {
    cursor: pointer;
}

/* Gitea Button */
.gitea-link {
    display: flex;
    justify-content: center;
    margin-top: 2rem;
}

.gitea-button {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background-color: #333333;
    color: white;
    text-decoration: none;
    border-radius: 4px;
    transition: all 0.3s ease;
}

.gitea-button:hover {
    background-color: #444444;
    transform: translateY(-1px);
    box-shadow: 0 2px 5px rgba(0,0,0,0.2);
}

.gitea-button svg {
    fill: currentColor;
    transform: scale(2.1);
    width: 16px;
    height: 16px;
    margin-right: 12px;
}

html.dark-mode .gitea-button {
    background-color: #444444;
}

html.dark-mode .gitea-button:hover {
    background-color: #333333;
}

/* Toggle Switch */
.switch {
    position: relative;
    display: inline-block;
    width: 50px;
    height: 24px;
    flex-shrink: 0;
}

.switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: #cccccc;
    transition: .4s;
    border-radius: 24px;
}

htmlhtml.dark-mode .slider {
    background-color: #333333;
}

.slider:before {
    position: absolute;
    content: "";
    height: 16px;
    width: 16px;
    left: 4px;
    bottom: 4px;
    background-color: white;
    transition: .4s;
    border-radius: 50%;
}

input:checked + .slider {
    background-color: #2196F3;
}

input:focus + .slider {
    box-shadow: 0 0 1px #2196F3;
}

input:checked + .slider:before {
    transform: translateX(26px);
}

/* Help Section */
.help-section {
    margin-top: 2rem;
    padding: 2rem;
    background-color: var(--bg-secondary);
    border-radius: 8px;
}

.help-section h3 {
    margin-top: 0;
    color: var(--text-primary);
    border-bottom: 2px solid var(--border-color);
    padding-bottom: 0.5rem;
}

.help-content {
    margin-top: 1rem;
}

.help-content h4 {
    color: var(--text-primary);
    margin: 1.5rem 0 0.5rem;
}

.help-content p {
    margin: 0.5rem 0;
    line-height: 1.5;
}

.help-content ul, .help-content ol {
    margin: 0.5rem 0;
    padding-left: 1.5rem;
}

.help-content li {
    margin: 0.25rem 0;
    line-height: 1.5;
}

.help-content pre {
    background-color: var(--bg-primary);
    padding: 1rem;
    border-radius: 4px;
    overflow-x: auto;
    margin: 0.5rem 0;
}

.help-content code {
    background-color: var(--bg-primary);
    padding: 0.2rem 0.4rem;
    border-radius: 4px;
    font-family: monospace;
}

html.dark-mode .help-section {
    background-color: var(--bg-secondary);
}

html.dark-mode .help-content pre,
html.dark-mode .help-content code {
    background-color: var(--bg-primary);
}

/* GitHub Button */
.github-link {
    text-align: center;
    margin: 30px 0;
}

.github-button {
    display: inline-flex;
    align-items: center;
    padding: 10px 20px;
    background-color: #24292e;
    color: white;
    text-decoration: none;
    border-radius: 6px;
    font-size: 16px;
    transition: background-color 0.2s;
}

.github-button:hover {
    background-color: #2f363d;
}

.github-button svg {
    margin-right: 10px;
    fill: currentColor;
}

html.dark-mode .github-button {
    background-color: #2f363d;
}

html.dark-mode .github-button:hover {
    background-color: #444d56;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .container {
        padding: 0.5rem;
    }

    .settings-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

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

    textarea#input,
    #output {
        min-height: 150px;
    }
}

@media (max-width: 480px) {
    body {
        padding: 10px;
    }

    h1 {
        font-size: 1.5rem;
        margin-bottom: 1rem;
    }

    .settings-panel {
        padding: 1rem;
    }
}