@import url("prism.css");
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;600&display=swap');

/* Стили макета для демо-страницы */
body {
    padding: 2rem;
    display: flex;
    justify-content: center;
}
.container {
    width: 100%;
    max-width: 960px;
    display: flex;
    flex-direction: column;
    gap: 2rem;
}
header {
    text-align: center;
    border-bottom: 1px solid var(--color-border-medium);
    padding-bottom: 1.5rem;
    position: relative;
}
header h1 {
    font-size: 2.5rem;
    color: var(--color-text-primary);
    margin-bottom: 0.5rem;
}
header p {
    font-size: 1.1rem;
    color: var(--color-text-secondary);
}
.input-section {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}
textarea#input-area {
    width: 100%;
    min-height: 250px;
    background-color: var(--input-element-bg);
    border: 1px solid var(--input-element-border);
    border-radius: var(--radius-md);
    padding: 1rem;
    font-family: var(--font-family-code);
    font-size: 0.95rem;
    color: var(--color-text-primary);
    resize: vertical;
    transition: all var(--transition-normal);
}
textarea#input-area:focus {
    outline: none;
    border-color: var(--color-border-focus);
    box-shadow: 0 0 0 3px rgba(var(--color-accent-raw), 0.2);
}
button#render-btn {
    align-self: flex-end;
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    font-weight: 600;
    background-color: var(--color-accent);
    color: var(--color-text-on-accent-bg);
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-normal);
}
button#render-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    filter: brightness(1.1);
}
.output-section h2 {
    margin-bottom: 1rem;
    font-size: 1.5rem;
    color: var(--color-text-primary);
}
#output {
    border: 1px solid var(--color-border-medium);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    background-color: var(--color-bg-surface);
    min-height: 200px;
}
#theme-toggle {
    position: absolute;
    top: 0;
    right: 0;
}

:root {


  /* ------------------------------------------------- */
  /* 1. RAW COLOR VALUES
  /* ------------------------------------------------- */
  --color-black-raw: 18, 18, 20;
  --color-white-raw: 230, 230, 230;
  --color-bg-surface-alt-raw: 44, 44, 44;
  --color-bg-interactive-raw: 33, 33, 33;
  --color-accent-raw: 200, 200, 200;
  --color-error-raw: 180, 50, 50;
  --color-success-raw: 200, 200, 200;


  /* ------------------------------------------------- */
  /* 2. CORE THEME COLORS
  /* ------------------------------------------------- */
  --color-black: rgb(var(--color-black-raw));
  --color-white: rgb(var(--color-white-raw));
  --color-accent: rgb(var(--color-accent-raw));
  --color-error: rgb(var(--color-error-raw));
  --color-success: rgb(var(--color-success-raw));

  /* ------------------------------------------------- */
  /* 3. SEMANTIC VARIABLES
  /* ------------------------------------------------- */

  /* Фон */
  --color-bg-main: var(--color-black);
  --color-bg-surface: #121212;
  --color-bg-surface-alt: rgb(var(--color-bg-surface-alt-raw));
  --color-bg-interactive: rgb(var(--color-bg-interactive-raw));
  --color-bg-overlay: rgba(var(--color-black-raw), 0.85);

  /* Текст */
  --color-text-primary: rgba(var(--color-white-raw), 0.9);
  --color-text-secondary: rgba(var(--color-white-raw), 0.6);
  --color-text-tertiary: rgba(var(--color-white-raw), 0.4);
  --color-text-link: var(--color-accent);
  --color-text-link-hover: var(--color-white);
  --color-text-on-accent-bg: var(--color-black);
  --color-text-error: rgb(255, 90, 90);
  --color-text-success: var(--color-success);
  --color-text-info: var(--color-accent);

  /* Границы */
  --color-border-subtle: rgba(var(--color-white-raw), 0.07);
  --color-border-medium: rgba(var(--color-white-raw), 0.15);
  --color-border-strong: rgba(var(--color-white-raw), 0.25);
  --color-border-focus: rgba(255, 255, 255, 0.4);

  /* Тени (минимализм: отключены) */
  --shadow-xs: none;
  --shadow-sm: none;
  --shadow-md: none;
  --shadow-lg: none;
  --shadow-xl: none;

  /* Сообщения чата */
  --user-message-bg: #262626;
  --user-message-text-color: rgba(var(--color-white-raw), 0.92);
  --ai-message-bg: var(--color-bg-surface-alt);
  --ai-message-text-color: var(--color-text-primary);
  --error-panel-bg: #3a1e1e;
  --error-panel-border: #622626;

  /* Поле ввода */
  --input-pill-bg: #1e1e1e;
  --input-pill-shadow: 0 2px 6px rgba(var(--color-black-raw), 0.6);
  --input-element-bg: #292929;
  --input-element-border: #444444;
  --input-element-focus-shadow: 0 0 0 2px rgba(var(--color-accent-raw), 0.3);
  --input-text-color: var(--color-white);
  --input-placeholder-color: #7a7a7a;
  --input-button-bg: #333333;
  --input-button-hover-bg: #444444;
  --input-send-button-bg: var(--input-button-bg);
  --input-send-button-hover-bg: var(--input-button-hover-bg);

  /* Код */
  --inline-code-bg: rgba(var(--color-black-raw), 0.5);
  --inline-code-border: var(--color-border-subtle);
  --inline-code-text: var(--color-text-primary);
  --code-block-bg: #1E1E1E;
  --code-block-border: var(--color-border-subtle);
  --code-block-header-bg: #252526;
  --line-numbers-bg: rgba(var(--color-bg-surface-alt-raw), 0.2);
  --line-numbers-border: var(--color-border-subtle);
  --line-numbers-text-color: var(--color-text-tertiary);

  /* Скелетон */
  --skeleton-bg: #3a3a3a;
  --skeleton-highlight: #4a4a4a;

  /* Кнопки-переключатели (Censorship, Web Search) */
  --toggle-btn-bg: rgba(var(--color-bg-surface-alt-raw), 0.85);
  --toggle-btn-hover-bg: rgba(var(--color-bg-interactive-raw), 0.9);
  --toggle-btn-active-bg: var(--color-white);
  --toggle-btn-active-text: var(--color-black);
  --toggle-btn-active-hover-bg: var(--color-white);
  --toggle-btn-active-shadow: 0 0 12px rgba(var(--color-white-raw), 0.3);
  --toggle-btn-icon-filter-active: invert(1);

  /* Иконки и изображения */
  --icon-upload-url: url('../elements/upload.png');
  --icon-send-url: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='white' width='22px' height='22px'%3E%3Cpath d='M2.01 21L23 12 2.01 3 2 10l15 2-15 2z'/%3E%3C/svg%3E");
  --icon-stop-url: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='white' width='18px' height='18px'%3E%3Cpath d='M6 6h12v12H6z'/%3E%3C/svg%3E");
  --icon-audio-url: url('../elements/audio.png');
  --filter-speak-btn-active: invert(1);
  --sidebar-toggle-icon-filter: invert(0.8);
  --new-chat-icon-filter: invert(0.7);
  --theme-toggle-icon-url: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="white" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><circle cx="12" cy="12" r="5"/><line x1="12" y1="1" x2="12" y2="3"/><line x1="12" y1="21" x2="12" y2="23"/><line x1="4.22" y1="4.22" x2="5.64" y2="5.64"/><line x1="18.36" y1="18.36" x2="19.78" y2="19.78"/><line x1="1" y1="12" x2="3" y2="12"/><line x1="21" y1="12" x2="23" y2="12"/><line x1="4.22" y1="19.78" x2="5.64" y2="18.36"/><line x1="18.36" y1="5.64" x2="19.78" y2="4.22"/></svg>');

  /* ------------------------------------------------- */
  /* 4. STATIC VALUES
  /* ------------------------------------------------- */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 20px;
  --radius-pill: 999px;
  --radius-chat-message: 18px;
  --spacing-unit: 4px;
  --chat-avatar-size: 36px;
  --chat-message-padding-y: calc(var(--spacing-unit) * 4);
  --chat-message-padding-x: calc(var(--spacing-unit) * 5);
  --input-area-item-height: 60px;
  --input-area-border-radius: 22px;
  --main-input-area-padding: calc(var(--spacing-unit) * 1.5);
  --z-toast: 3000;
  --z-drag-overlay: 1500;
  --z-modal: 2000;
  --z-popups: 2100;
  --z-overlay: 1100;
  --z-header: 1000;
  --z-sidebar: 1050;
  --z-content: 1;
  --transition-duration-fast: 0.15s;
  --transition-duration-normal: 0.25s;
  --transition-timing-function: ease-out;
  --transition-fast: var(--transition-duration-fast) var(--transition-timing-function);
  --transition-normal: var(--transition-duration-normal) var(--transition-timing-function);
  --font-family-main: 'Nunito', 'SF Pro Text', 'Ubuntu', 'Segoe UI', sans-serif;
  --font-family-thinking: 'Inter', system-ui, sans-serif;
  --font-family-code: 'Monaspace Neon', monospace;

  /* Анимации */
  --animation-duration-fast: 0.2s;
  --animation-duration-normal: 0.3s;
  --animation-duration-slow: 0.5s;
  --animation-timing-bounce: cubic-bezier(0.68, -0.55, 0.265, 1.55);
  --animation-timing-smooth: cubic-bezier(0.4, 0, 0.2, 1);
}

html[data-theme="light"] {
  /* 1. RAW COLOR VALUES */
  --color-black-raw: 255, 255, 255;
  --color-white-raw: 28, 28, 30;
  --color-bg-surface-alt-raw: 229, 229, 234;
  --color-bg-interactive-raw: 209, 209, 214;
  --color-accent-raw: 0, 0, 0;
  --color-error-raw: 210, 4, 4;
  --color-success-raw: 46, 125, 50;

  /* 2. CORE THEME COLORS */
  --color-bg-main: #F2F2F7;
  --color-bg-surface: #FFFFFF;
  --color-bg-overlay: rgba(var(--color-white-raw), 0.3);

  /* 3. SEMANTIC VARIABLES */
  /* Текст */
  --color-text-primary: rgba(var(--color-white-raw), 0.95);
  --color-text-secondary: rgba(var(--color-white-raw), 0.6);
  --color-text-tertiary: rgba(var(--color-white-raw), 0.45);
  --color-text-link-hover: #000000;
  --color-text-on-accent-bg: #FFFFFF;
  --color-text-error: #D32F2F;

  /* Границы */
  --color-border-subtle: rgba(var(--color-white-raw), 0.1);
  --color-border-medium: rgba(var(--color-white-raw), 0.2);
  --color-border-strong: rgba(var(--color-white-raw), 0.4);

  /* Тени */
  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.07);
  --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.08);
  --shadow-xl: 0 12px 24px rgba(0, 0, 0, 0.1);

  /* Сообщения чата */
  --user-message-bg: var(--color-accent);
  --user-message-text-color: var(--color-text-on-accent-bg);
  --error-panel-bg: #FFEBEB;
  --error-panel-border: #FFC5C5;

  /* Поле ввода */
  --input-pill-bg: #FFFFFF;
  --input-pill-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
  --input-element-bg: #E5E5EA;
  --input-element-border: #D1D1D6;
  --input-element-focus-shadow: 0 0 0 2px rgba(var(--color-accent-raw), 0.3);
  --input-text-color: var(--color-text-primary);
  --input-placeholder-color: #8A8A8E;
  --input-send-button-bg: var(--color-accent);
  --input-send-button-hover-bg: #000000;

  /* Код */
  --inline-code-bg: #e9e9e9;
  --inline-code-border: #ddd;
  --inline-code-text: #333;
  --code-block-bg: #f5f5f5;
  --code-block-border: #e0e0e0;
  --code-block-header-bg: #e9e9e9;
  --line-numbers-bg: #e9e9e9;
  --line-numbers-border: #ddd;
  --line-numbers-text-color: #999;

  /* Скелетон */
  --skeleton-bg: #e0e0e0;
  --skeleton-highlight: #f5f5f5;

  /* Кнопки-переключатели */
  --toggle-btn-active-bg: #333;
  --toggle-btn-active-text: #fff;
  --toggle-btn-active-hover-bg: #000;
  --toggle-btn-active-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
  --toggle-btn-icon-filter-active: none;

  --filter-speak-btn-active: none;
  --sidebar-toggle-icon-filter: invert(0.2);
  --new-chat-icon-filter: invert(0.3);
  --theme-toggle-icon-url: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="black" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M21 12.79A9 9 0 1 1 11.21 3 7 7 0 0 0 21 12.79z"></path></svg>');

  /* Компактный режим для светлой темы */
  --compact-spacing-unit: 3px;
}

html[data-theme="light"] .user-settings-btn svg { filter: invert(1) hue-rotate(180deg); }
html[data-theme="light"] .source-favicon-pill img,
html[data-theme="light"] .link-pill-favicon,
html[data-theme="light"] .source-item .source-favicon { filter: none; }
html[data-theme="light"] .ai-attachments .attached-img,
html[data-theme="light"] .user-attachments .attached-img,
html[data-theme="light"] .lightbox-image,
html[data-theme="light"] img.markdown-image,
html[data-theme="light"] .file-modal .preview-tab img,
html[data-theme="light"] .code-preview-content-wrapper img,
html[data-theme="light"] .mermaid svg { filter: none; }
html[data-theme="light"] .action-btn img,
html[data-theme="light"] .variant-btn img,
html[data-theme="light"] #toggleSidebarBtn img,
html[data-theme="light"] .delete-chat-btn img,
html[data-theme="light"] .lightbox-btn img,
html[data-theme="light"] .attach-button,
html[data-theme="light"] .send-button,
html[data-theme="light"] .censorship-button img,
html[data-theme="light"] .web-search-toggle img,
html[data-theme="light"] .file-preview .remove-btn::before { filter: invert(1) hue-rotate(180deg); }


html {
    scroll-behavior: smooth;
    font-size: 16px;
}

::selection {
    background: var(--color-text-link-hover);
    color: var(--color-bg-main);
}
html[data-theme="light"] ::selection { background: #000000; color: #ffffff; }

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

*, *::before, *::after {
    box-shadow: none !important;
    text-shadow: none !important;
}

body {
    background: var(--color-bg-main);
    color: var(--color-text-primary);
    font-family: var(--font-family-main);
    line-height: 1.6;
    min-height: 100vh;
    padding: calc(var(--spacing-unit) * 4);
    display: flex;
    flex-direction: column;
    align-items: center;
    overflow-x: hidden;
    transition: padding-left var(--transition-duration-normal) var(--transition-timing-function), background-color var(--transition-normal); /* For sidebar & theme */
}

.message-content {
    flex: 1;
    position: relative;
    transition: transform var(--transition-fast), box-shadow var(--transition-fast), background-color var(--transition-normal);
    max-width: 1000px;
    box-sizing: border-box;
    overflow-wrap: break-word;
}

.message-text {
    font-size: 1rem;
    line-height: 1.65;
    word-wrap: break-word;
    overflow-wrap: break-word;
}
.message-text p:not(:last-child) { margin-bottom: calc(var(--spacing-unit) * 3); } /* 12px */

.ai-message h1, .ai-message h2, .ai-message h3, .ai-message h4, .ai-message h5, .ai-message h6 {
    color: var(--color-text-primary);
    margin-top: calc(var(--spacing-unit) * 4);
    margin-bottom: calc(var(--spacing-unit) * 3);
    font-weight: 600;
}
.ai-message h1, .ai-message h2 {
    border-bottom: 1px solid var(--color-border-medium);
    padding-bottom: var(--spacing-unit);
}
.ai-message strong, .ai-message b { font-weight: 600; }
.ai-message em, .ai-message i {
    font-style: italic;
    color: rgba(var(--color-white-raw), 0.9);
}
.ai-message del {
    text-decoration: line-through;
    color: var(--color-text-tertiary);
}
.ai-message mark {
    background-color: #e8c84a;
    color: var(--color-black);
    padding: 2px 5px;
    border-radius: var(--radius-sm);
}
.ai-message a {
    color: var(--color-text-link);
    text-decoration: none;
    border-bottom: 1px solid rgba(var(--color-accent-raw), 0.4);
    transition: color var(--transition-fast), border-color var(--transition-fast);
}
.ai-message a:hover {
    color: var(--color-text-link-hover);
    border-color: var(--color-text-link-hover);
}
html[data-theme="light"] .ai-message a { color: #111; border-color: rgba(0,0,0,0.4); }
html[data-theme="light"] .ai-message a:hover { color: #000; border-color: #000; }
.ai-message u {
    text-decoration: underline;
    text-decoration-style: wavy;
    text-decoration-color: rgba(var(--color-white-raw), 0.5);
}

.ai-message code:not([class*="language-"]) {
    background: var(--inline-code-bg) !important;
    border: 1px solid var(--inline-code-border);
    color: var(--inline-code-text);
    padding: 2px 6px;
    border-radius: var(--radius-sm);
    font-size: 0.875em;
    font-family: var(--font-family-code);
}
.ai-message blockquote {
    border-left: 3px solid var(--color-border-medium);
    background: rgba(var(--color-white-raw), 0.03);
    color: var(--color-text-secondary);
    padding: calc(var(--spacing-unit) * 2) calc(var(--spacing-unit) * 3);
    margin: calc(var(--spacing-unit) * 3) 0;
    font-style: italic;
}
.ai-message blockquote strong {
    font-weight: 600;
    color: var(--color-text-primary);
    font-style: normal;
}
.ai-message ul, .ai-message ol {
    padding-left: calc(var(--spacing-unit) * 6);
    margin: calc(var(--spacing-unit) * 3) 0;
}
.ai-message li { margin-bottom: var(--spacing-unit); }
.ai-message hr {
    border: none;
    border-top: 1px solid var(--color-border-medium);
    margin: calc(var(--spacing-unit) * 5) 0;
}
.ai-message table.markdown-table {
    width: 100%;
    border-collapse: collapse;
    margin: calc(var(--spacing-unit) * 3) 0;
    font-size: 0.9em;
    border: 1px solid var(--color-border-medium);
    border-radius: var(--radius-md);
    overflow: hidden;
    max-width: 100%;
    box-sizing: border-box;
}
.ai-message table.markdown-table th,
.ai-message table.markdown-table td {
    border: 1px solid var(--color-border-medium);
    padding: calc(var(--spacing-unit) * 2) calc(var(--spacing-unit) * 2.5);
    text-align: left;
}
.ai-message table.markdown-table th {
    background-color: rgba(var(--color-white-raw), 0.05);
    font-weight: 600;
}
.ai-message img.markdown-image {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius-lg);
    margin: calc(var(--spacing-unit) * 3) auto;
    border: 2px solid var(--color-border-medium);
    box-sizing: border-box;
    display: block;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    transition: all 0.3s ease;
    background: var(--color-bg-surface);
    padding: calc(var(--spacing-unit) * 1.5);
}

.ai-message img.markdown-image:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4);
    border-color: var(--color-border-strong);
}

.md-table-wrapper {
    background: var(--code-block-bg);
    border-radius: var(--radius-lg);
    border: 1px solid var(--code-block-border);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
    overflow: hidden;
    margin: calc(var(--spacing-unit) * 4) 0;
    max-width: 100%;
    box-sizing: border-box;
}
.md-table-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: calc(var(--spacing-unit) * 2) calc(var(--spacing-unit) * 3);
    background: var(--code-block-header-bg);
    border-bottom: 1px solid var(--code-block-border);
}
.md-table-header-title {
    display: flex;
    align-items: center;
    gap: calc(var(--spacing-unit) * 2);
    font-size: 0.85em;
    font-weight: 500;
    color: var(--color-text-primary);
}
.md-table-header-title img {
    width: 16px;
    height: 16px;
    opacity: 0.7;
}
.copy-table-btn {
    background: transparent;
    border: none;
    cursor: pointer;
}
.copy-table-btn:hover {
    background-color: rgba(var(--color-white-raw), 0.08);
    transform: scale(1.1);
}
.copy-table-btn img {
    width: 14px;
    height: 14px;
}
.md-table-container {
    overflow-x: auto;
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
}
.md-table-container table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9em;
}

.md-table-container th,
.md-table-container td {
    padding: calc(var(--spacing-unit) * 2.5) calc(var(--spacing-unit) * 3);
    text-align: left;
    border-bottom: 1px solid var(--code-block-border);
    white-space: nowrap;
}

.md-table-container th {
    background-color: rgba(var(--color-white-raw), 0.05);
    font-weight: 600;
}

.md-table-container tbody tr:nth-child(even) {
    background-color: rgba(var(--color-white-raw), 0.02);
}

.md-table-container tbody tr:last-child th,
.md-table-container tbody tr:last-child td {
    border-bottom: none;
}

ul.task-list {
    list-style-type: none;
    padding-left: calc(var(--spacing-unit) * 2); /* 8px */
}
li.task-list-item {
    display: flex;
    align-items: flex-start;
    gap: calc(var(--spacing-unit) * 2); /* 8px */
}
li.task-list-item input[type="checkbox"] {
    margin-top: calc(var(--spacing-unit) * 1.25);
    width: 16px;
    height: 16px;
    flex-shrink: 0;
    accent-color: var(--color-text-link);
}

.mermaid {
    background: rgb(30, 30, 30);
    border-radius: var(--radius-md);
    padding: calc(var(--spacing-unit) * 4);
    margin: calc(var(--spacing-unit) * 4) 0;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: auto;
    color: var(--color-text-primary);
    font-family: var(--font-family-code);
    font-size: 0.95rem;
    line-height: 1.5;
    max-width: 100%;
    box-shadow: var(--shadow-md);
    transition: background var(--transition-fast), box-shadow var(--transition-fast);
}
html[data-theme="light"] .mermaid { background: #f6f6f6; }
html[data-theme="light"] .mermaid text,
html[data-theme="light"] .mermaid tspan,
html[data-theme="light"] .mermaid foreignObject,
html[data-theme="light"] .mermaid .node text,
html[data-theme="light"] .mermaid .edgeLabel tspan { fill: #111 !important; color: #111 !important; }
html[data-theme="light"] .mermaid path,
html[data-theme="light"] .mermaid line { stroke: #111 !important; }
html[data-theme="light"] .mermaid marker path { fill: #111 !important; }

.mermaid text,
.mermaid tspan,
.mermaid foreignObject,
.mermaid .node text,
.mermaid .edgeLabel tspan {
    fill: rgba(255, 255, 255, 0.95) !important;
    color: rgba(255, 255, 255, 0.95) !important;
    font-family: var(--font-family-code);
}

.mermaid path,
.mermaid line {
    stroke: rgba(255, 255, 255) !important;
}
.mermaid marker path {
    fill: rgb(255, 255, 255) !important;
}

.code-block {
    background: var(--code-block-bg) !important;
    border-radius: var(--radius-lg);
    border: 1px solid var(--code-block-border) !important;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
    overflow: hidden;
    margin: calc(var(--spacing-unit) * 4) 0 !important;
    font-family: var(--font-family-code) !important;
    max-width: 100%;
    box-sizing: border-box;
}

.code-block-header {
    display: flex;
    align-items: center;
    padding: calc(var(--spacing-unit) * 2) calc(var(--spacing-unit) * 3);
    background: var(--code-block-header-bg);
    border-bottom: 1px solid var(--code-block-border);
    font-size: 0.85em;
    color: var(--color-text-secondary);
}

.code-block-icon {
    margin-right: calc(var(--spacing-unit) * 2); /* 8px */
    color: var(--color-text-tertiary);
    line-height: 1;
    font-size: 1.1em;
}

.code-block-filename {
    flex-grow: 1;
    font-family: var(--font-family-main);
    color: var(--color-text-primary);
    font-weight: 500;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.code-block-header-actions {
    display: flex;
    align-items: center;
    gap: calc(var(--spacing-unit) * 1.5);
}

.code-block-header-actions .copy-code-btn,
.code-block-header-actions .toggle-code-btn,
.code-block-header-actions .download-code-btn {
    background: transparent;
    border: none;
    border-radius: var(--radius-sm);
    padding: var(--spacing-unit);
    cursor: pointer;
    transition: background-color 0.2s ease, color 0.2s ease, transform 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-tertiary);
    width: 28px;
    height: 28px;
    position: relative;
}

.code-block-header-actions .toggle-code-btn.disabled {
    opacity: 0.5;
    cursor: not-allowed;
    pointer-events: none;
}

.code-block-header-actions .copy-code-btn:hover,
.code-block-header-actions .toggle-code-btn:hover,
.code-block-header-actions .download-code-btn:hover {
    background-color: rgba(var(--color-white-raw), 0.08);
    color: var(--color-text-primary);
    transform: scale(1.1);
}

.code-block-header-actions .toggle-code-btn.disabled:hover {
    background-color: transparent;
    color: var(--color-text-tertiary);
    transform: none;
}

.code-block-header-actions .copy-code-btn img {
    width: 14px;
    height: 14px;
}

.code-block-header-actions .download-code-btn img {
    width: 25px;
    height: 15px;
}

.code-block-header-actions .toggle-code-btn svg {
    width: 18px;
    height: 18px;
    fill: currentColor;
}

.code-block.with-preview .code-preview-content-wrapper {
    max-height: 488px;
    transition: max-height 0.4s ease-in-out;
    overflow: hidden;
    position: relative;
    border-top: 1px solid var(--code-block-border);
}

.code-block.with-preview.expanded .code-preview-content-wrapper {
    max-height: calc(90vh - 100px);
}

.code-block.with-preview.expanded .preview-pane iframe {
    height: calc(90vh - 140px);
}

.code-block.with-preview.expanded .code-pane .code-block-content {
    max-height: calc(90vh - 140px);
}

.code-block.with-preview .code-block-header {
    border-bottom: none;
}

.code-block-content {
    position: relative;
    padding: 0 !important;
    background-color: var(--code-block-bg);
    transition: max-height 0.4s ease-in-out;
    overflow-y: auto;
    overflow-x: hidden;
}

.code-block-content.has-overflow::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    pointer-events: none;
    transition: opacity 0.2s ease-in-out;
    opacity: 1;
    border-radius: 0 0 var(--radius-lg) var(--radius-lg);
}

.code-block-content.expanded::after {
    opacity: 0;
}

.code-block-content pre {
    margin: 0 !important;
    padding: 0 !important;
    font-size: 0.875em !important;
    color: var(--color-text-primary) !important;
    white-space: pre !important;
    word-break: normal !important;
    background: transparent !important;
    border: none !important;
    box-shadow: none !important;
    overflow: visible !important;
    height: auto !important;
}

.code-preview-tabs {
    display: flex;
    background-color: var(--code-block-header-bg);
    padding: 0 calc(var(--spacing-unit) * 3);
    gap: calc(var(--spacing-unit) * 3);
    border-bottom: 1px solid var(--code-block-border);
}

.code-preview-tabs .tab {
    background: none;
    border: none;
    color: var(--color-text-secondary);
    padding: calc(var(--spacing-unit) * 2.5) var(--spacing-unit);
    cursor: pointer;
    font-size: 0.85em;
    font-weight: 500;
    border-bottom: 2px solid transparent;
    transition: all var(--transition-fast);
    position: relative;
    top: 1px;
}

.code-preview-tabs .tab:hover {
    color: var(--color-text-primary);
}

.code-preview-tabs .tab.active {
    color: var(--color-text-primary);
    border-bottom-color: var(--color-accent);
}

.code-preview-content-wrapper {
    background-color: var(--code-block-bg);
    border-radius: 0 0 var(--radius-lg) var(--radius-lg);
}

.tab-pane {
    display: none;
}

.tab-pane.active {
    display: block;
    animation: fadeIn 0.3s ease-in-out;
}

.preview-pane iframe {
    width: 100%;
    height: 450px;
    border: none;
    background-color: white;
    border-radius: 0 0 var(--radius-lg) var(--radius-lg);
}

.code-pane .code-block-content {
    max-height: 450px;
    overflow-y: auto;
}

pre.line-numbers {
    position: relative;
    padding-left: 3.8em !important;
    counter-reset: linenumber;
}

pre.line-numbers > code {
    position: relative;
    white-space: pre !important;
}

.line-numbers .line-numbers-rows {
    position: absolute;
    pointer-events: none;
    top: 0;
    font-size: 100%;
    letter-spacing: -1.1px;
    border-right: 1px solid var(--line-numbers-border) !important;
    -webkit-user-select: none;
    user-select: none;
    background-color: var(--line-numbers-bg) !important;
}

.line-numbers-rows > span {
    pointer-events: none;
    display: block;
    counter-increment: linenumber;
}

.line-numbers-rows > span:before {
    content: counter(linenumber);
    color: var(--line-numbers-text-color) !important;
    display: block;
    padding-right: 0.8em;
    text-align: right;
}

.copy-notification {
  position: absolute;
  bottom: 120%;
  left: 50%;
  transform: translateX(-50%) translateY(10px);
  padding: 4px 8px;
  background: var(--color-success);
  color: white;
  border-radius: var(--radius-sm);
  font-size: 0.8em;
  white-space: nowrap;
  opacity: 0;
  transition: opacity 0.3s ease, transform 0.3s ease;
  pointer-events: none;
}

.copy-notification.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.theme-toggle-btn {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background-color: var(--color-bg-surface-alt);
    border: 1px solid var(--color-border-medium);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-fast);
}
.theme-toggle-btn:hover {
    transform: translateY(-2px) scale(1.05);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-border-strong);
}
.theme-toggle-btn:active {
    transform: scale(0.95);
}
.theme-toggle-btn img {
    content: var(--theme-toggle-icon-url);
    width: 22px;
    height: 22px;
    transition: transform 0.3s ease-in-out;
}
html[data-theme="light"] .theme-toggle-btn img { filter: invert(1) hue-rotate(180deg); }
.theme-toggle-btn[aria-label] { position: relative; }
.theme-toggle-btn:hover img {
    transform: rotate(15deg) scale(1.1);
}

.link-pill-wrapper {
    position: relative;
    display: inline-block;
    vertical-align: middle;
    margin: 0 2px;
}

a.link-pill {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background-color: var(--color-bg-surface-alt);
    border: 1px solid var(--color-border-subtle);
    border-radius: var(--radius-pill);
    padding: 4px 12px 4px 6px;
    text-decoration: none;
    transition: all var(--transition-fast);
    cursor: pointer;
    font-size: 0.9em;
    line-height: 1.4;
}

a.link-pill:hover {
    background-color: var(--color-bg-interactive);
    border-color: var(--color-border-medium);
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

.link-pill-favicon {
    width: 18px;
    height: 18px;
    border-radius: 4px;
    object-fit: contain;
    flex-shrink: 0;
    background-color: rgba(var(--color-white-raw), 0.1);
}

.link-pill-title {
    color: var(--color-text-link);
    font-weight: 500;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 250px;
}

.link-tooltip {
    position: absolute;
    bottom: calc(100% + 8px);
    left: 50%;
    transform: translateX(-50%) translateY(5px);
    width: 320px;
    max-width: 90vw;
    background-color: var(--color-bg-surface);
    border: 1px solid var(--color-border-medium);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    padding: 12px;
    z-index: var(--z-popups);
    display: flex;
    gap: 12px;
    align-items: flex-start;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity var(--transition-fast), transform var(--transition-fast);
}

.link-pill-wrapper:hover .link-tooltip {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: translateX(-50%) translateY(0);
}

.link-tooltip-favicon {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-sm);
    flex-shrink: 0;
    margin-top: 2px;
}

.link-tooltip-content {
    display: flex;
    flex-direction: column;
    gap: 4px;
    min-width: 0;
}

.link-tooltip-title {
    font-weight: 600;
    color: var(--color-text-primary);
    font-size: 0.95rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.link-tooltip-description {
    font-size: 0.85rem;
    color: var(--color-text-secondary);
    line-height: 1.5;
    display: -webkit-box;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.chart-container, .d3-container {
    margin: 16px 0;
    padding: 16px;
    background: var(--color-bg-surface);
    border: 1px solid var(--color-border-subtle);
    border-radius: var(--radius-md);
}

.chart-loading, .d3-loading {
    text-align: center;
    color: var(--color-text-secondary);
    font-style: italic;
    padding: 20px;
}

.d3-visualization {
    min-height: 300px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.d3-visualization svg {
    max-width: 100%;
    height: auto;
}

::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background: rgba(var(--color-white-raw), 0.02);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb {
    background-color: rgba(var(--color-white-raw), 0.1);
    border-radius: 5px;
    border: 2px solid transparent;
    background-clip: content-box;
    transition: background-color var(--transition-fast);
}

::-webkit-scrollbar-thumb:hover {
    background-color: rgba(var(--color-white-raw), 0.2);
}

html {
    scrollbar-width: thin;
    scrollbar-color: rgba(var(--color-white-raw), 0.2) rgba(var(--color-white-raw), 0.02);
}

html[data-theme="light"] {
    scrollbar-color: rgba(var(--color-white-raw), 0.4) rgba(var(--color-white-raw), 0.05);
}

html[data-theme="light"] ::-webkit-scrollbar-track {
    background: rgba(var(--color-white-raw), 0.05);
}

html[data-theme="light"] ::-webkit-scrollbar-thumb {
    background-color: rgba(var(--color-white-raw), 0.2);
}

html[data-theme="light"] ::-webkit-scrollbar-thumb:hover {
    background-color: rgba(var(--color-white-raw), 0.4);
}