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felixfoertsch.de/templates/chalkboard.html

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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0, viewport-fit=cover">
<title>{{ title }} — {{ config.site.name }}</title>
<link rel="preconnect" href="https://fonts.googleapis.com">
<link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
<link href="https://fonts.googleapis.com/css2?family=Caveat:wght@400;500;600;700&family=Caveat+Brush&display=swap" rel="stylesheet">
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/katex@0.16.9/dist/katex.min.css">
<style>
html { background: #243d24; }
* {
box-sizing: border-box;
margin: 0;
padding: 0;
}
:root {
--board: #2d4a2d;
--board-dark: #243d24;
--chalk-white: #f0ede8;
--chalk-dim: rgba(240,237,232,0.6);
--chalk-faint: rgba(240,237,232,0.3);
--chalk-yellow: #f5e642;
--chalk-blue: #7ec8e3;
--chalk-pink: #f5a0b0;
--chalk-orange: #f5b042;
--eraser: rgba(240,237,232,0.04);
}
body {
background: var(--board-dark);
color: var(--chalk-white);
font-family: "Caveat", cursive;
font-size: 30px;
line-height: 1.7;
min-height: 100vh;
position: relative;
overflow-x: hidden;
}
/* SVG noise texture overlay for chalk dust */
body::before {
content: "";
position: fixed;
inset: 0;
background-image:
url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='200' height='200'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.75' numOctaves='4' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='200' height='200' filter='url(%23n)' opacity='0.08'/%3E%3C/svg%3E");
pointer-events: none;
z-index: 0;
opacity: 0.6;
}
/* Chalkboard rail at bottom */
body::after {
content: "";
position: fixed;
bottom: 0;
left: 0;
right: 0;
height: 32px;
background: linear-gradient(to bottom, #3d2a1a, #2a1c0e);
border-top: 4px solid #5a3d28;
z-index: 100;
}
/* Fake eraser smudges */
.eraser-marks {
position: fixed;
inset: 0;
pointer-events: none;
z-index: 1;
overflow: hidden;
}
.eraser-mark {
position: absolute;
border-radius: 50%;
background: var(--eraser);
filter: blur(20px);
}
.board {
position: relative;
z-index: 2;
max-width: 920px;
margin: 0 auto;
padding: 40px 48px 80px;
}
/* Board edge lines */
.board-frame {
border: 2px solid rgba(240,237,232,0.12);
padding: 32px 40px 48px;
position: relative;
}
.board-frame::before,
.board-frame::after {
content: "";
position: absolute;
background: rgba(240,237,232,0.08);
}
.board-frame::before {
top: 6px;
left: 6px;
right: 6px;
bottom: 6px;
border: 1px solid rgba(240,237,232,0.07);
}
/* Header / lecture heading */
.lecture-header {
text-align: center;
margin-bottom: 32px;
padding-bottom: 24px;
border-bottom: 2px solid var(--chalk-dim);
position: relative;
}
.lecture-header::after {
content: "";
position: absolute;
bottom: -6px;
left: 10%;
right: 10%;
border-bottom: 1px solid var(--chalk-faint);
}
.course-label {
font-size: 22px;
color: var(--chalk-dim);
letter-spacing: 0.15em;
text-transform: uppercase;
margin-bottom: 8px;
}
.lecture-title {
font-family: "Caveat Brush", cursive;
font-size: clamp(28px, 5vw, 52px);
color: var(--chalk-white);
text-shadow:
1px 1px 0 rgba(255,255,255,0.1),
0 0 20px rgba(240,237,232,0.15),
2px 2px 4px rgba(0,0,0,0.4);
line-height: 1.1;
letter-spacing: 0.01em;
}
.lecture-meta {
display: flex;
justify-content: center;
gap: 32px;
margin-top: 16px;
font-size: 24px;
color: var(--chalk-dim);
}
.lecture-meta .chalk-yellow { color: var(--chalk-yellow); }
/* Chalk line divider */
.chalk-divider {
text-align: center;
margin: 28px 0;
height: 2px;
background: linear-gradient(
to right,
transparent 0%,
var(--chalk-dim) 15%,
var(--chalk-white) 40%,
var(--chalk-white) 60%,
var(--chalk-dim) 85%,
transparent 100%
);
position: relative;
}
/* Content */
.content-area {
margin-top: 32px;
}
.content-area h1 {
font-family: "Caveat Brush", cursive;
font-size: 54px;
color: var(--chalk-yellow);
text-shadow: 0 0 12px rgba(245,230,66,0.3), 1px 1px 2px rgba(0,0,0,0.5);
margin-top: 40px;
margin-bottom: 16px;
padding-bottom: 8px;
border-bottom: 1px solid rgba(245,230,66,0.3);
letter-spacing: 0.01em;
}
.content-area h2 {
font-size: 42px;
color: var(--chalk-blue);
text-shadow: 0 0 10px rgba(126,200,227,0.3), 1px 1px 2px rgba(0,0,0,0.5);
margin-top: 32px;
margin-bottom: 12px;
}
.content-area h3 {
font-size: 36px;
color: var(--chalk-pink);
text-shadow: 0 0 8px rgba(245,160,176,0.3);
margin-top: 24px;
margin-bottom: 10px;
}
.content-area p {
margin-bottom: 18px;
text-shadow: 0 0 1px rgba(240,237,232,0.3), 1px 1px 1px rgba(0,0,0,0.3);
}
.content-area a {
color: var(--chalk-blue);
text-decoration: underline;
text-decoration-style: dotted;
text-shadow: 0 0 6px rgba(126,200,227,0.3);
}
.content-area code {
font-family: "Courier New", monospace;
font-size: 24px;
color: var(--chalk-orange);
background: rgba(245,176,66,0.08);
padding: 1px 6px;
border: 1px solid rgba(245,176,66,0.2);
border-radius: 2px;
}
.content-area pre {
background: rgba(0,0,0,0.25);
border: 1px solid var(--chalk-faint);
border-left: 3px solid var(--chalk-orange);
padding: 20px 22px;
margin: 20px 0;
overflow-x: auto;
font-family: "Courier New", monospace;
font-size: 22px;
line-height: 1.7;
}
.content-area pre code {
background: none;
border: none;
padding: 0;
color: var(--chalk-white);
}
.content-area blockquote {
border-left: 3px solid var(--chalk-yellow);
padding: 12px 20px;
margin: 20px 0;
background: rgba(245,230,66,0.04);
font-style: italic;
color: var(--chalk-yellow);
text-shadow: 0 0 8px rgba(245,230,66,0.2);
}
.content-area ul,
.content-area ol {
margin: 14px 0 18px 8px;
list-style: none;
padding: 0;
}
.content-area ul li::before {
content: "- ";
color: var(--chalk-dim);
}
.content-area ol {
counter-reset: chalkitem;
}
.content-area ol li {
counter-increment: chalkitem;
}
.content-area ol li::before {
content: counter(chalkitem) ". ";
color: var(--chalk-yellow);
}
.content-area li {
margin-bottom: 6px;
text-shadow: 1px 1px 1px rgba(0,0,0,0.3);
}
.content-area table {
width: 100%;
border-collapse: collapse;
margin: 20px 0;
}
.content-area th {
border-bottom: 2px solid var(--chalk-dim);
padding: 8px 12px;
text-align: left;
color: var(--chalk-yellow);
font-size: 27px;
}
.content-area td {
border-bottom: 1px solid var(--chalk-faint);
padding: 8px 12px;
}
.content-area img {
max-width: 100%;
border: 1px solid var(--chalk-faint);
display: block;
margin: 24px auto;
}
.content-area hr {
border: none;
margin: 28px 0;
height: 1px;
background: linear-gradient(to right, transparent, var(--chalk-faint), transparent);
}
/* KaTeX math — make it readable on dark board */
.content-area .katex {
color: var(--chalk-white);
font-size: 1.49em;
}
.content-area .katex-display {
padding: 16px 0;
color: var(--chalk-yellow);
}
.footer-chalk {
margin-top: 48px;
padding-top: 20px;
border-top: 1px solid var(--chalk-faint);
display: flex;
justify-content: space-between;
font-size: 24px;
color: var(--chalk-dim);
}
</style>
</head>
<body>
<a href="/{{ preview_query }}" style="position:fixed;top:calc(1rem + env(safe-area-inset-top, 0px));left:calc(1rem + env(safe-area-inset-left, 0px));z-index:9999;font-family:system-ui,-apple-system,sans-serif;font-size: 1.08rem;padding:0.5rem 0.9rem;background:rgba(255,255,255,0.95);color:#000;text-decoration:none;border-radius:999px;box-shadow:0 2px 8px rgba(0,0,0,0.15);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);border:1px solid rgba(0,0,0,0.1);transition:transform 0.2s">&larr; back</a>
<div class="eraser-marks">
<div class="eraser-mark" style="width:300px;height:200px;top:15%;left:5%;"></div>
<div class="eraser-mark" style="width:200px;height:150px;top:60%;right:8%;"></div>
<div class="eraser-mark" style="width:250px;height:180px;top:80%;left:30%;"></div>
<div class="eraser-mark" style="width:180px;height:100px;top:35%;right:20%;"></div>
</div>
<div class="board">
<div class="board-frame">
<header class="lecture-header">
<div class="course-label">{{ config.site.name }} — {{ config.site.author }}</div>
<div class="lecture-title">{{ title }}</div>
<div class="lecture-meta">
<span>{{ published_date }}</span>
<span class="chalk-yellow">{{ reading_time }}</span>
{% if taxonomy.tags %}
<span>
{% for tag in taxonomy.tags %}{{ tag }}{% if not loop.last %}, {% endif %}{% endfor %}
</span>
{% endif %}
</div>
</header>
<div class="chalk-divider"></div>
<div class="content-area">
{{ content | safe }}
</div>
<div class="footer-chalk">
<span>{{ config.site.name }}</span>
<span>{{ published_date }}</span>
</div>
</div>
</div>
</body>
</html>