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Improve 404 page design mobile #487

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65d01d2
Improve 404 page design and mobile responsiveness
Sufiyan-MSA Feb 28, 2026
c9d6770
chore: ignore Windows nul artifact
Sufiyan-MSA Feb 28, 2026
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3 changes: 3 additions & 0 deletions .gitignore
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Original file line number Diff line number Diff line change
Expand Up @@ -13,6 +13,9 @@ venv/
# in case of using pyenv
.python-version

# Windows null device artifact
nul

# Ignore translation files
*.pot
*.mo
244 changes: 187 additions & 57 deletions DISCOVER/404.html
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Original file line number Diff line number Diff line change
Expand Up @@ -2,133 +2,263 @@
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0"/>
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>404 - Not Found</title>
<style>
* {
box-sizing: border-box;
margin: 0;
padding: 0;
}

body {
height: 100vh;
background: linear-gradient(135deg, black, #e4f0ff);
min-height: 100vh;
background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 50%, #dee2e6 100%);
display: flex;
align-items: center;
justify-content: center;
font-family: 'Segoe UI', sans-serif;
overflow: hidden;
font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
overflow-x: hidden;
position: relative;
padding: 1rem;
}

@media (prefers-reduced-motion: reduce) {
body *,
body *::before,
body *::after {
animation-duration: 0.01ms !important;
animation-iteration-count: 1 !important;
transition-duration: 0.01ms !important;
}
}

.light-blur {
position: absolute;
width: 500px;
height: 500px;
background: radial-gradient(circle at center, transparent);
width: min(500px, 90vw);
height: min(500px, 90vw);
background: radial-gradient(circle at center, rgba(232, 146, 23, 0.08) 0%, transparent 70%);
border-radius: 50%;
filter: blur(80px);
top: 20%;
left: 10%;
animation: drift 10s ease-in-out infinite alternate;
filter: blur(60px);
top: 15%;
left: 5%;
animation: drift 12s ease-in-out infinite alternate;
z-index: 0;
pointer-events: none;
}

@keyframes drift {
0% { transform: translate(0, 0); }
100% { transform: translate(60px, 30px); }
100% { transform: translate(40px, 25px); }
}

.glass-card {
background: rgba(255, 255, 255, 0.25);
background: rgba(255, 255, 255, 0.85);
backdrop-filter: blur(12px);
-webkit-backdrop-filter: blur(12px);
padding: 2.5rem 3rem;
border-radius: 20px;
border: 1px solid rgba(255, 255, 255, 0.3);
max-width: 500px;
padding: 2rem 2.5rem;
border-radius: 16px;
border: 1px solid rgba(222, 226, 230, 0.8);
max-width: 520px;
width: 100%;
text-align: center;
z-index: 1;
box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
box-shadow: 0 4px 24px rgba(0, 0, 0, 0.06), 0 1px 3px rgba(0, 0, 0, 0.04);
}

h1 {
font-size: 2.5em;
color: rgb(52, 51, 51);
font-size: clamp(1.75rem, 5vw, 2.5rem);
color: #222832;
margin-bottom: 0.5rem;
font-weight: 600;
line-height: 1.2;
}

.card-content p {
font-size: clamp(0.95rem, 2.5vw, 1.1rem);
color: #495057;
margin-bottom: 1rem;
line-height: 1.5;
}

p {
font-size: 1.1em;
color: rgb(52, 51, 51);
margin-bottom: 1.4rem;
.card-content p:last-of-type {
margin-bottom: 1.25rem;
}

a {
display: inline-block;
margin: 0.4rem;
padding: 0.6rem 1rem;
.card-content strong {
color: #222832;
}

.actions {
display: flex;
flex-wrap: wrap;
gap: 0.75rem;
justify-content: center;
margin-bottom: 1.25rem;
}

a.cta {
display: inline-flex;
align-items: center;
justify-content: center;
min-height: 44px;
padding: 0.6rem 1.25rem;
border-radius: 8px;
text-decoration: none;
background: #d0bfff;
color: #1f1f1f;
font-weight: 600;
transition: background 0.3s ease;
font-size: 0.95rem;
transition: background-color 0.2s ease, color 0.2s ease, box-shadow 0.2s ease;
cursor: pointer;
}

a.cta-primary {
background: #e89217;
color: #1a1a1a;
}

a.cta-primary:hover {
background: #d48314;
box-shadow: 0 2px 8px rgba(232, 146, 23, 0.35);
}

a.cta-secondary {
background: #f8f9fa;
color: #222832;
border: 1px solid #dee2e6;
}

a:hover {
background: #c1aaff;
a.cta-secondary:hover {
background: #e9ecef;
border-color: #ced4da;
}

a.cta:focus {
outline: 2px solid #e89217;
outline-offset: 2px;
}

.language-section {
margin-top: 1.5rem;
padding-top: 1.25rem;
border-top: 1px solid #e9ecef;
}

.language-section label {
display: block;
margin-bottom: 0.5rem;
color: #495057;
font-size: 0.9rem;
}

select {
margin-top: 1rem;
padding: 0.5rem;
padding: 0.5rem 2rem 0.5rem 0.75rem;
border-radius: 6px;
border: 1px solid #ccc;
font-size: 1em;
border: 1px solid #dee2e6;
font-size: 1rem;
background: #fff;
color: #222832;
min-height: 40px;
cursor: pointer;
}

select:focus {
outline: 2px solid #e89217;
outline-offset: 2px;
}

#footer {
margin-top: 1rem;
font-size: 0.85rem;
color: #6c757d;
}

/* Tablet */
@media (max-width: 768px) {
body {
padding: 1.5rem;
}

.glass-card {
padding: 1.75rem 2rem;
}

.actions {
flex-direction: column;
align-items: stretch;
}

a.cta {
width: 100%;
}
}

/* Mobile */
@media (max-width: 480px) {
body {
padding: 1rem;
}

.glass-card {
padding: 1.5rem 1.25rem;
border-radius: 12px;
}

.light-blur {
width: 70vw;
height: 70vw;
top: 10%;
}
}

/* Small phones */
@media (max-width: 320px) {
.glass-card {
padding: 1.25rem 1rem;
}
}
</style>
</head>
<body>
<div class="light-blur"></div>
<div class="glass-card">
<div class="light-blur" aria-hidden="true"></div>
<main class="glass-card" role="main" aria-labelledby="title">
<h1 id="title">404 - Page Not Found</h1>
<p id="message">This page might’ve wandered off or was never here at all.</p>
<p id="suggestion">Maybe it was deleted, renamed, or never existed in the first place.</p>
<p><strong id="what-do">What can you do?</strong></p>
<a href="./intro.html" id="home">⬅️ Back to Home</a>
<a href="https://github.com/numfocus/DISCOVER-Cookbook/issues" id="report">🐞 Report the Issue</a>

<div>
<label for="language-switcher" style="display:block; margin-top:1.5rem; color:#444;">🌐 Switch Language:</label>
<select id="language-switcher">
<div class="card-content">
<p id="message">This page might've wandered off or was never here at all.</p>
<p id="suggestion">Maybe it was deleted, renamed, or never existed in the first place.</p>
<p><strong id="what-do">What can you do?</strong></p>
</div>
<div class="actions">
<a href="./intro.html" id="home" class="cta cta-primary" aria-label="Back to home page">Back to Home</a>
<a href="https://github.com/numfocus/DISCOVER-Cookbook/issues" id="report" class="cta cta-secondary" target="_blank" rel="noopener noreferrer" aria-label="Report this issue on GitHub">Report the Issue</a>
</div>
<div class="language-section">
<label for="language-switcher">Switch language</label>
<select id="language-switcher" aria-label="Choose page language">
<option value="en">English</option>
<option value="es">Español</option>
</select>
</div>

<p id="footer" style="margin-top: 1.2rem;">If you think this is an error, let us know by creating an issue.</p>
</div>
<p id="footer">If you think this is an error, let us know by creating an issue.</p>
</main>

<script>
const translations = {
en: {
title: "404 - Page Not Found",
message: "This page might’ve wandered off or was never here at all.",
message: "This page might've wandered off or was never here at all.",
suggestion: "Maybe it was deleted, renamed, or never existed in the first place.",
whatDo: "What can you do?",
home: "⬅️ Back to Home",
report: "🐞 Report the Issue",
home: "Back to Home",
report: "Report the Issue",
footer: "If you think this is an error, let us know by creating an issue."
},
es: {
title: "404 - Página no encontrada",
message: "Esta página se ha perdido o nunca existió.",
suggestion: "Tal vez fue eliminada, renombrada o nunca existió.",
whatDo: "¿Qué puedes hacer?",
home: "⬅️ Volver al inicio",
report: "🐞 Informar del problema",
home: "Volver al inicio",
report: "Informar del problema",
footer: "Si crees que esto es un error, infórmanos creando un issue."
}
};
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