@import url('https://fonts.googleapis.com/css2?family=Material+Symbols+Outlined:opsz,wght,FILL,GRAD@24,400,0,0');

:root {
    --bg: #1e1e2e;
    --surface: #313244;
    --surface-light: #3b3d54;
    --text: #cdd6f4;
    --subtext: #a6adc8;
    --primary: #89b4fa;
    --primary-hover: #b4befe;
    --border: #585b70;
    --code-bg: #252636;
}

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

a {
    color: var(--primary);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

.material-symbols-outlined {
    font-family: 'Material Symbols Outlined';
    font-weight: normal;
    font-style: normal;
    font-size: 18px;
    display: inline-block;
    line-height: 1;
    text-transform: none;
    letter-spacing: normal;
    word-wrap: normal;
    white-space: nowrap;
    direction: ltr;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--bg);
    color: var(--text);
    min-height: 100vh;
    padding: 16px;
}

.container {
    display: flex;
    gap: 16px;
    height: calc(100vh - 32px);
    max-width: 100%;
}

.editor-pane, .preview-pane {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-width: 0;
}

.toolbar {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
    padding: 0;
    background-color: transparent;
    border: none;
}

.toolbar-btn {
    padding: 6px 10px;
    background-color: var(--surface-light);
    border: 1px solid var(--border);
    border-radius: 4px;
    color: var(--text);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.15s ease;
    min-height: 36px;
    box-sizing: border-box;
}

.toolbar-btn:hover {
    background-color: var(--primary);
    color: var(--bg);
    border-color: var(--primary);
    transform: scale(1.1);
}

.toolbar-btn:active {
    transform: scale(1);
}

.bold-btn {
    font-weight: bold;
}

.italic-btn {
    font-style: italic;
}

.strike-btn {
    text-decoration: line-through;
}

.dropdown {
    position: relative;
    display: inline-block;
    flex-shrink: 0;
}

.dropdown-toggle {
    padding: 6px 10px;
    min-width: auto;
    min-height: 36px;
    box-sizing: border-box;
}

.dropdown-toggle .caret {
    font-size: 10px;
    margin-left: 2px;
}

.dropdown-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    background-color: var(--surface-light);
    border: 1px solid var(--border);
    border-radius: 4px;
    min-width: 60px;
    z-index: 1000;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

.dropdown-menu .toolbar-btn {
    display: block;
    width: 100%;
    text-align: left;
    border: none;
    border-radius: 0;
    background: transparent;
}

.dropdown-menu .toolbar-btn:first-child {
    border-radius: 4px 4px 0 0;
}

.dropdown-menu .toolbar-btn:last-child {
    border-radius: 0 0 4px 4px;
}

.dropdown-menu .toolbar-btn:hover {
    background-color: var(--primary);
    color: var(--bg);
}

.dropdown:hover .dropdown-menu {
    display: block;
}

.save-btn {
    background-color: #3d5066;
    color: #ffffff;
    border-color: #3d5066;
}

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

.pane-header {
    display: flex;
    align-items: center;
    gap: 8px;
    background-color: var(--surface);
    border: 1px solid var(--border);
    border-bottom: none;
    border-radius: 8px 8px 0 0;
    padding: 8px;
}

.pane-header .toolbar {
    flex: 1;
    border: none;
    background: transparent;
    padding: 0;
}

.fullscreen-btn {
    padding: 6px 10px;
    background-color: var(--surface-light);
    border: 1px solid var(--border);
    border-radius: 4px;
    color: var(--text);
    font-size: 13px;
    cursor: pointer;
    transition: all 0.15s ease;
    flex-shrink: 0;
    min-height: 36px;
    box-sizing: border-box;
}

.fullscreen-btn:hover {
    background-color: var(--primary);
    color: var(--bg);
    border-color: var(--primary);
    transform: scale(1.1);
}

.fullscreen-btn:active {
    transform: scale(1);
}

.container {
    display: flex;
    gap: 16px;
    height: calc(100vh - 32px);
    max-width: 100%;
}

.container.hide-preview .preview-pane,
.container.hide-editor .editor-pane {
    display: none;
}

.container.hide-preview .editor-pane,
.container.hide-editor .preview-pane {
    flex: 1;
}

#editor {
    flex: 1;
    width: 100%;
    padding: 16px;
    border: 1px solid var(--border);
    border-radius: 0 0 8px 8px;
    background-color: var(--surface);
    color: var(--text);
    font-size: 14px;
    font-family: 'Source Code Pro', 'SF Mono', 'Monaco', 'Inconsolata', 'Fira Mono', 'Droid Sans Mono', monospace;
    line-height: 1.6;
    resize: none;
    outline: none;
}

#editor:focus {
    outline: none;
}

#editor.drag-over {
    border-color: var(--primary);
    background-color: var(--surface);
}

#editor::placeholder {
    color: var(--subtext);
    opacity: 0.6;
}

.preview-header {
    padding: 12px 16px;
    background-color: var(--surface);
    border: 1px solid var(--border);
    border-bottom: none;
    font-weight: 600;
    font-size: 14px;
    color: var(--preview-header-text, var(--subtext));
    border-radius: 0;
    flex: 1;
}

.pane-header .preview-header {
    background: transparent;
    border: none;
    min-height: 36px;
    display: flex;
    align-items: center;
    padding: 0 16px;
}

.preview-pane .pane-header {
    background-color: var(--preview-header-bg, transparent);
    color: var(--preview-header-text, var(--text));
}

.preview-content {
    flex: 1;
    padding: 16px;
    background-color: var(--surface);
    border: 1px solid var(--border);
    border-radius: 0 0 8px 8px;
    overflow-y: auto;
    line-height: 1.7;
}

.preview-content h1 {
    font-size: 2em;
    margin-bottom: 0.5em;
    padding-bottom: 0.3em;
    border-bottom: 1px solid var(--border);
}

.preview-content h2 {
    font-size: 1.5em;
    margin-top: 1em;
    margin-bottom: 0.5em;
    padding-bottom: 0.2em;
    border-bottom: 1px solid var(--border);
}

.preview-content h3 {
    font-size: 1.25em;
    margin-top: 1em;
    margin-bottom: 0.5em;
}

.preview-content h4, .preview-content h5, .preview-content h6 {
    margin-top: 1em;
    margin-bottom: 0.5em;
}

.preview-content p {
    margin-bottom: 1em;
}

.preview-content ul, .preview-content ol {
    margin-bottom: 1em;
    padding-left: 2em;
}

.preview-content li {
    margin-bottom: 0.25em;
}

.preview-content li input[type="checkbox"] {
    margin-right: 8px;
    accent-color: var(--primary);
}

.preview-content blockquote {
    margin: 1em 0;
    padding: 0.5em 1em;
    border-left: 4px solid var(--primary);
    background-color: var(--code-bg);
    color: var(--subtext);
}

.preview-content code {
    padding: 0.2em 0.4em;
    background-color: var(--code-bg);
    border-radius: 4px;
    font-family: 'Source Code Pro', 'SF Mono', 'Monaco', 'Inconsolata', 'Fira Mono', monospace;
    font-size: 0.9em;
}

.preview-content pre {
    margin: 1em 0;
    padding: 0.9rem;
    background-color: var(--code-bg);
    border-radius: 8px;
    overflow-x: auto;
}

.preview-content pre code {
    padding: 0;
    background: none;
    font-size: 13px;
    line-height: 1.5;
}

.preview-content pre code.hljs {
    background: none;
    padding: 0;
}

.copy-btn {
    position: absolute;
    top: 8px;
    right: 8px;
    padding: 6px 6px;
    background-color: var(--surface-light);
    border: 1px solid var(--border);
    border-radius: 4px;
    color: var(--text);
    font-size: 16px;
    cursor: pointer;
    opacity: 0;
    transition: opacity 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.code-block-wrapper:hover .copy-btn {
    opacity: 0.7;
}

.copy-btn:hover {
    opacity: 1 !important;
    background-color: var(--primary);
    color: var(--bg);
    transform: scale(1.1);
}

.copy-btn:active {
    transform: scale(1);
}

.copy-btn span:first-child {
    opacity: 1;
    transition: opacity 0.2s ease;
}

.copy-btn span:last-child {
    opacity: 0;
    position: absolute;
    transition: opacity 0.2s ease;
}

.copy-btn.copied span:first-child {
    opacity: 0;
}

.copy-btn.copied span:last-child {
    opacity: 1;
}

.preview-content a {
    color: var(--primary);
    text-decoration: none;
}

.preview-content a:hover {
    text-decoration: underline;
}

.preview-content img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    margin: 1em 0;
}

.preview-content hr {
    border: none;
    height: 2px;
    background-color: var(--border);
    margin: 2em 0;
}

.preview-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 1em 0;
}

.preview-content th, .preview-content td {
    padding: 0.75em;
    border: 1px solid var(--border);
    text-align: left;
}

.preview-content th {
    background-color: var(--surface-light);
    font-weight: 600;
}

.preview-content tr:nth-child(even) {
    background-color: var(--code-bg);
}

.preview-content strong {
    font-weight: 600;
}

.preview-content em {
    font-style: italic;
}

.preview-content del {
    text-decoration: line-through;
    color: var(--subtext);
}

@media (max-width: 768px) {
    .container {
        flex-direction: column;
        height: calc(100vh - 32px);
    }
    
    .container.hide-preview .preview-pane,
    .container.hide-editor .editor-pane {
        display: none;
    }
    
    .container.hide-preview .editor-pane,
    .container.hide-editor .preview-pane {
        flex: 1;
        min-height: 0;
    }
    
    .editor-pane, .preview-pane {
        flex: 1;
        min-height: 0;
    }
    
    .toolbar-btn {
        padding: 4px 6px;
        font-size: 11px;
    }
    
    .material-symbols-outlined {
        font-size: 14px;
    }
}

.modal-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.7);
    z-index: 2000;
    align-items: center;
    justify-content: center;
}

.modal-overlay.show {
    display: flex;
}

.modal {
    background-color: var(--surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 32px;
    text-align: center;
    max-width: 400px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
}

.modal h2 {
    margin-bottom: 12px;
    color: var(--text);
}

.modal .description {
    color: var(--subtext);
    margin-bottom: 20px;
    line-height: 1.5;
}

.modal .copyright {
    color: var(--text);
    margin-bottom: 8px;
}

.modal .license {
    color: var(--subtext);
    font-size: 13px;
    margin-bottom: 8px;
}

.modal-buttons {
    display: flex;
    gap: 12px;
    justify-content: center;
    margin-top: 20px;
}

.modal-btn {
    padding: 10px 24px;
    background-color: var(--surface-light);
    color: var(--text);
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: transform 0.2s ease, background-color 0.2s ease;
}

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

.modal-btn.secondary:hover {
    transform: scale(0.995);
}

.modal-btn:active,
.modal-btn.primary:active,
.modal-btn.secondary:active {
    transform: scale(1) !important;
}

.modal-btn.primary {
    background-color: var(--primary);
    color: var(--bg);
    border: none;
}

.modal-btn.primary:hover {
    background-color: var(--primary-hover);
    transform: scale(1.05);
}

::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--surface);
}

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

::-webkit-scrollbar-thumb:hover {
    background: var(--subtext);
}

.link-btn {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    background: none;
    border: none;
    color: var(--primary);
    font-size: inherit;
    cursor: pointer;
    padding: 0;
    text-decoration: none;
    font-family: inherit;
}

.link-btn:hover {
    text-decoration: underline;
}

.link-btn img {
    width: 16px;
    height: 16px;
}

.color-tooltip {
    position: fixed;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 8px 12px;
    display: flex;
    align-items: center;
    gap: 10px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    z-index: 1000;
    font-size: 13px;
}

.color-tooltip .color-input {
    width: 36px;
    height: 36px;
    border: 2px solid var(--border);
    border-radius: 4px;
    cursor: pointer;
    padding: 0;
    background: var(--surface-light);
}

.color-tooltip .color-input::-webkit-color-swatch-wrapper {
    padding: 0;
}

.color-tooltip .color-input::-webkit-color-swatch {
    border: none;
    border-radius: 2px;
}

.color-tooltip .color-input::-moz-color-swatch {
    border: none;
    border-radius: 2px;
}

.color-tooltip .color-value {
    font-family: monospace;
    color: var(--text);
}