/* ==========================================================================
   Standard Blog Stylesheet — Clean Editorial
   Shared across homepage and all standard article pages.
   ========================================================================== */

/* --- Web Font --- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

/* --- Custom Properties --- */
:root {
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;
    --font-mono: ui-monospace, SFMono-Regular, 'SF Mono', Menlo, Consolas, 'Liberation Mono', monospace;

    --color-bg: #f5f5f5;
    --color-surface: #ffffff;
    --color-text: #1a1a1a;
    --color-text-secondary: #555;
    --color-text-muted: #777;
    --color-link: #1a6dd4;
    --color-link-hover: #0f4d9a;
    --color-border: #ddd;
    --color-border-light: #e8e8e8;

    --color-blockquote-border: #d4a574;
    --color-blockquote-bg: #fafafa;

    --color-code-bg: #1e1e2e;
    --color-code-text: #cdd6f4;
    --color-inline-code-bg: rgba(175, 184, 193, 0.15);

    --color-table-header-bg: #f5f5f5;
    --color-table-border: #e0e0e0;

    --content-width: none;
    --homepage-width: none;

    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
}

/* --- Base Reset & Body --- */
*, *::before, *::after {
    box-sizing: border-box;
}

body {
    font-family: var(--font-body);
    font-size: 18px;
    line-height: 1.7;
    color: var(--color-text);
    background-color: var(--color-bg);
    margin: 0;
    padding: 0;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

/* --- Page Container (article pages) --- */
.page-container {
    max-width: 750px;
    margin: 0 auto;
    padding: 40px 24px 80px;
}

/* --- Nav Bar --- */
.page-actions-bar {
    padding: 16px 0;
    margin-bottom: 8px;
    border-bottom: 1px solid var(--color-border-light);
    display: flex;
    justify-content: flex-start;
    align-items: center;
    gap: 12px;
}

.action-button {
    color: var(--color-text-secondary);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.875rem;
    padding: 0;
    display: inline-flex;
    align-items: center;
    gap: 4px;
    transition: color 0.15s ease;
    background: none;
    border: none;
}

.action-button:hover {
    color: var(--color-text);
    text-decoration: none;
}

/* --- Content Wrapper (removes old card-in-card look) --- */
.content-wrapper {
    background: transparent;
    border-radius: 0;
    box-shadow: none;
    overflow: visible;
}

/* --- Article Body (markdown-body) --- */
.markdown-body {
    font-family: var(--font-body);
    font-size: 18px;
    line-height: 1.7;
    color: var(--color-text);
    word-wrap: break-word;
    overflow-wrap: break-word;
}

.markdown-body > :first-child {
    margin-top: 0 !important;
}

.markdown-body > :last-child {
    margin-bottom: 0 !important;
}

/* --- Headings --- */
.markdown-body h1,
.markdown-body h2,
.markdown-body h3,
.markdown-body h4,
.markdown-body h5,
.markdown-body h6 {
    font-family: var(--font-body);
    font-weight: 700;
    line-height: 1.3;
    color: var(--color-text);
    margin-top: 2em;
    margin-bottom: 0.6em;
    border: none;
    padding-bottom: 0;
}

.markdown-body h1 {
    font-size: 2em;
    margin-top: 0;
    margin-bottom: 0.4em;
    letter-spacing: -0.02em;
}

.markdown-body h2 {
    font-size: 1.5em;
    letter-spacing: -0.01em;
}

.markdown-body h3 {
    font-size: 1.2em;
}

.markdown-body h4 {
    font-size: 1.05em;
    font-weight: 600;
}

.markdown-body h5 {
    font-size: 0.95em;
    font-weight: 600;
}

.markdown-body h6 {
    font-size: 0.9em;
    font-weight: 600;
    color: var(--color-text-secondary);
}

/* --- Paragraphs & Text --- */
.markdown-body p {
    margin-top: 0;
    margin-bottom: 1.25em;
}

.markdown-body b,
.markdown-body strong {
    font-weight: 600;
}

.markdown-body small {
    font-size: 90%;
}

.markdown-body sub,
.markdown-body sup {
    font-size: 75%;
    line-height: 0;
    position: relative;
    vertical-align: baseline;
}

.markdown-body sub {
    bottom: -0.25em;
}

.markdown-body sup {
    top: -0.5em;
}

.markdown-body sup > a::before {
    content: "[";
}

.markdown-body sup > a::after {
    content: "]";
}

.markdown-body mark {
    background-color: #fff8c5;
    color: var(--color-text);
    padding: 0.1em 0.2em;
    border-radius: 2px;
}

/* --- Links --- */
.markdown-body a {
    color: var(--color-link);
    text-decoration: none;
    transition: color 0.15s ease;
}

.markdown-body a:hover {
    color: var(--color-link-hover);
    text-decoration: underline;
}

.markdown-body a:not([href]) {
    color: inherit;
    text-decoration: none;
}

/* --- Blockquotes --- */
.markdown-body blockquote {
    margin: 1.5em 0;
    padding: 1em 1.5em;
    border-left: 3px solid var(--color-blockquote-border);
    background: var(--color-blockquote-bg);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    color: var(--color-text);
    font-style: normal;
}

.markdown-body blockquote > :first-child {
    margin-top: 0;
}

.markdown-body blockquote > :last-child {
    margin-bottom: 0;
}

/* --- Lists --- */
.markdown-body ol,
.markdown-body ul {
    margin-top: 0;
    margin-bottom: 1.25em;
    padding-left: 1.75em;
}

.markdown-body ol ol,
.markdown-body ul ol {
    list-style-type: lower-roman;
}

.markdown-body ol ol ol,
.markdown-body ol ul ol,
.markdown-body ul ol ol,
.markdown-body ul ul ol {
    list-style-type: lower-alpha;
}

.markdown-body ol ol,
.markdown-body ol ul,
.markdown-body ul ol,
.markdown-body ul ul {
    margin-top: 0;
    margin-bottom: 0;
}

.markdown-body li {
    margin-bottom: 0.3em;
}

.markdown-body li > p {
    margin-top: 16px;
}

.markdown-body li + li {
    margin-top: 0.25em;
}

.markdown-body ol.no-list,
.markdown-body ul.no-list {
    padding: 0;
    list-style-type: none;
}

.markdown-body ol[type="1"] { list-style-type: decimal; }
.markdown-body ol[type="a"] { list-style-type: lower-alpha; }
.markdown-body ol[type="i"] { list-style-type: lower-roman; }
.markdown-body div > ol:not([type]) { list-style-type: decimal; }

/* --- Definition Lists --- */
.markdown-body dl {
    padding: 0;
}

.markdown-body dl dt {
    padding: 0;
    margin-top: 16px;
    font-size: 1em;
    font-style: italic;
    font-weight: 600;
}

.markdown-body dl dd {
    padding: 0 16px;
    margin-bottom: 16px;
}

/* --- Horizontal Rule --- */
.markdown-body hr {
    border: none;
    height: 1px;
    background-color: var(--color-border);
    width: 120px;
    margin: 3em auto;
}

.markdown-body hr::before,
.markdown-body hr::after {
    display: none;
}

/* --- Images --- */
.markdown-body img {
    max-width: 100%;
    border-style: none;
    border-radius: var(--radius-sm);
}

.markdown-body img[align="right"] { padding-left: 20px; }
.markdown-body img[align="left"] { padding-right: 20px; }

/* --- Inline Code --- */
.markdown-body code,
.markdown-body tt {
    font-family: var(--font-mono);
    font-size: 0.85em;
    padding: 0.2em 0.4em;
    margin: 0;
    background-color: var(--color-inline-code-bg);
    border-radius: var(--radius-sm);
}

.markdown-body code br,
.markdown-body tt br {
    display: none;
}

.markdown-body del code {
    text-decoration: inherit;
}

/* --- Code Blocks --- */
.markdown-body pre {
    font-family: var(--font-mono);
    font-size: 0.85em;
    line-height: 1.5;
    word-wrap: normal;
    margin-top: 0;
    margin-bottom: 1.25em;
    padding: 1.25em;
    overflow: auto;
    background-color: var(--color-code-bg);
    color: var(--color-code-text);
    border-radius: var(--radius-md);
}

.markdown-body pre code,
.markdown-body pre tt {
    display: inline;
    max-width: auto;
    padding: 0;
    margin: 0;
    overflow: visible;
    line-height: inherit;
    word-wrap: normal;
    background-color: transparent;
    border: 0;
    font-size: 100%;
    color: inherit;
}

.markdown-body pre > code {
    padding: 0;
    margin: 0;
    word-break: normal;
    white-space: pre;
    background: none;
    border: 0;
}

.markdown-body .highlight {
    margin-bottom: 1.25em;
}

.markdown-body .highlight pre {
    margin-bottom: 0;
    word-break: normal;
}

/* --- Tables --- */
.markdown-body table {
    border-spacing: 0;
    border-collapse: collapse;
    display: block;
    width: max-content;
    max-width: 100%;
    overflow: auto;
    margin-bottom: 1.25em;
    font-size: 0.9em;
}

.markdown-body table th {
    font-weight: 600;
    background-color: var(--color-table-header-bg);
    text-align: left;
}

.markdown-body table td,
.markdown-body table th {
    padding: 10px 14px;
    border-bottom: 1px solid var(--color-table-border);
}

.markdown-body table tr:last-child td {
    border-bottom: none;
}

.markdown-body table thead tr {
    border-bottom: 2px solid var(--color-border);
}

.markdown-body table tr {
    background-color: transparent;
}

.markdown-body table img {
    background-color: transparent;
}

/* --- Keyboard --- */
.markdown-body kbd {
    display: inline-block;
    padding: 3px 5px;
    font: 11px var(--font-mono);
    line-height: 10px;
    color: var(--color-text);
    vertical-align: middle;
    background-color: #f6f8fa;
    border: solid 1px rgba(175, 184, 193, 0.2);
    border-bottom-color: rgba(175, 184, 193, 0.2);
    border-radius: 6px;
    box-shadow: inset 0 -1px 0 rgba(175, 184, 193, 0.2);
}

/* --- Details/Summary --- */
.markdown-body details,
.markdown-body figcaption,
.markdown-body figure {
    display: block;
}

.markdown-body summary {
    display: list-item;
    cursor: pointer;
}

.markdown-body details:not([open]) > :not(summary) {
    display: none !important;
}

.markdown-body [hidden] {
    display: none !important;
}

/* --- Footnotes --- */
.markdown-body .footnotes {
    font-size: 0.85em;
    color: var(--color-text-secondary);
    border-top: 1px solid var(--color-border-light);
    margin-top: 3em;
    padding-top: 1.5em;
}

.markdown-body .footnotes ol {
    padding-left: 1.5em;
}

.markdown-body .footnotes li {
    position: relative;
}

.markdown-body .footnotes li:target::before {
    position: absolute;
    top: -8px;
    right: -8px;
    bottom: -8px;
    left: -24px;
    pointer-events: none;
    content: "";
    border: 2px solid var(--color-link);
    border-radius: 6px;
}

.markdown-body .footnotes li:target {
    color: var(--color-text);
}

/* --- Task Lists --- */
.markdown-body .task-list-item {
    list-style-type: none;
}

.markdown-body .task-list-item label {
    font-weight: 400;
}

.markdown-body .task-list-item + .task-list-item {
    margin-top: 3px;
}

.markdown-body .task-list-item-checkbox {
    margin: 0 0.2em 0.25em -1.6em;
    vertical-align: middle;
}

/* --- Abbreviations --- */
.markdown-body abbr[title] {
    border-bottom: none;
    text-decoration: underline dotted;
}

/* --- Inputs (for forms in markdown) --- */
.markdown-body input {
    font: inherit;
    margin: 0;
    overflow: visible;
}

/* --- Spacing for block elements --- */
.markdown-body blockquote,
.markdown-body details,
.markdown-body dl,
.markdown-body ol,
.markdown-body p,
.markdown-body pre,
.markdown-body table,
.markdown-body ul {
    margin-top: 0;
    margin-bottom: 1.25em;
}

/* ==========================================================================
   Homepage Styles
   ========================================================================== */

/* Homepage container */
body.homepage .page-container {
    max-width: 1400px;
}

body.homepage .markdown-body h1 {
    font-size: 2.2em;
    margin-bottom: 0.3em;
}

body.homepage .markdown-body > p {
    color: var(--color-text-secondary);
    font-size: 1.05em;
    margin-bottom: 2rem;
}

/* --- Card Grid --- */
.page-list {
    margin-top: 2rem;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: 1.5rem;
}

.page-item {
    display: flex;
    flex-direction: column;
    background: var(--color-surface);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-lg);
    text-decoration: none;
    color: var(--color-text-secondary);
    transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
    overflow: hidden;
}

.page-item:hover {
    border-color: var(--color-border);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.06);
    text-decoration: none;
    color: var(--color-text-secondary);
}

.card-image {
    width: 100%;
    height: 220px;
    object-fit: cover;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border-light);
}

.card-content {
    padding: 1.25rem;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.page-title {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.6rem;
    color: var(--color-text);
    line-height: 1.35;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.page-item:hover .page-title {
    color: var(--color-link);
}

.page-meta {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    margin: 0;
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* ==========================================================================
   Responsive
   ========================================================================== */

@media (max-width: 768px) {
    body {
        font-size: 17px;
    }

    .page-container {
        padding: 24px 16px 60px;
    }

    .markdown-body {
        font-size: 17px;
    }

    .markdown-body h1 {
        font-size: 1.65em;
    }

    .markdown-body h2 {
        font-size: 1.3em;
    }

    .markdown-body pre {
        padding: 1em;
        border-radius: var(--radius-sm);
    }

    .page-list {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .card-image {
        height: 180px;
    }

    .card-content {
        padding: 1rem;
    }

    body.homepage .markdown-body h1 {
        font-size: 1.8em;
    }
}

@media (max-width: 480px) {
    .page-container {
        padding: 16px 12px 48px;
    }

    .markdown-body h1 {
        font-size: 1.5em;
    }
}