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added 404 website themed page #102

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7e0e7db
added 404 website themed page
Jun 4, 2026
41bb16a
refine 404 page layout and responsiveness
jagdish-15 Jun 5, 2026
1a29ca6
style: auto-format code with Prettier (/format)
github-actions[bot] Jun 5, 2026
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294 changes: 294 additions & 0 deletions frontend/404.html
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Original file line number Diff line number Diff line change
@@ -0,0 +1,294 @@
<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>404 — Not Found | CodePVG</title>
<link rel="icon" type="image/png" href="assets/logo.png" />
<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=Fira+Code:wght@400;500;600;700&family=Space+Mono:wght@400;700&family=Share+Tech+Mono&display=swap"
rel="stylesheet"
/>
<link rel="stylesheet" href="styles/main.css" />
<style>
/* 404-specific overrides */
body {
background: var(--bg);
color: var(--green);
font-family: "Share Tech Mono", "Courier New", monospace;
min-height: 100vh;
display: flex;
align-items: center;
justify-content: center;
overflow: hidden;
position: relative;
}

/* Matrix rain canvas */
#matrix {
position: fixed;
top: 0;
left: 0;
width: 100%;
height: 100%;
z-index: 0;
opacity: 0.18;
}

/* Main panel */
.panel {
position: relative;
z-index: 1;
background: rgba(0, 10, 0, 0.85);
border: 1px solid rgba(0, 255, 65, 0.3);
border-radius: 4px;
padding: 2.5rem 3rem;
max-width: 680px;
width: 90%;
box-shadow:
0 0 40px rgba(0, 255, 65, 0.08),
inset 0 0 60px rgba(0, 0, 0, 0.5);
}

/* Title */
.title {
font-size: 2.4rem;
font-weight: normal;
color: var(--green);
text-shadow:
0 0 20px rgba(0, 255, 65, 0.4),
0 0 40px rgba(0, 255, 65, 0.4);
letter-spacing: 2px;
margin-bottom: 0.4rem;
}

.title .cursor {
display: inline-block;
width: 3px;
height: 2.2rem;
background: var(--green);
vertical-align: middle;
margin-left: 4px;
animation: blink 1s step-end infinite;
box-shadow: 0 0 8px var(--green);
}

@keyframes blink {
50% {
opacity: 0;
}
}

.subtitle {
color: #4a8c4a;
font-size: 0.85rem;
margin-bottom: 2rem;
}

/* Terminal lines */
.terminal-block {
margin-bottom: 1.4rem;
}

.line {
line-height: 1.8;
font-size: 0.95rem;
}

.prompt {
color: var(--green);
text-shadow: 0 0 8px rgba(0, 255, 65, 0.4);
}

.prompt-sym {
color: var(--green-dim);
}

.cmd {
color: #c9e8c9;
}

.error-line {
color: var(--red);
text-shadow: 0 0 8px rgba(255, 68, 68, 0.4);
}

.comment {
color: #4a8c4a;
}

.highlight {
color: var(--green);
font-weight: bold;
text-shadow: 0 0 10px rgba(0, 255, 65, 0.4);
}

.highlight a {
color: inherit;
text-decoration: none;
transition: color 0.15s ease;
}

.highlight a:hover {
color: #66ffaa;
text-shadow: 0 0 12px rgba(0, 255, 65, 0.4);
}

/* Divider */
.divider {
border: none;
border-top: 1px solid rgba(0, 255, 65, 0.3);
margin: 1.4rem 0;
}

/* Button area — centered */
.nav-links {
display: flex;
gap: 1.2rem;
flex-wrap: wrap;
margin-top: 1.8rem;
justify-content: center;
}

/* Scanline overlay */
body::after {
content: "";
position: fixed;
top: 0;
left: 0;
width: 100%;
height: 100%;
background: repeating-linear-gradient(
0deg,
transparent,
transparent 2px,
rgba(0, 0, 0, 0.05) 2px,
rgba(0, 0, 0, 0.05) 4px
);
pointer-events: none;
z-index: 2;
}
</style>
</head>

<body>
<canvas id="matrix"></canvas>

<div class="panel">
<div class="title">404 — Not Found<span class="cursor"></span></div>
<div class="subtitle">
&gt; route resolution failed. filesystem integrity nominal.
</div>

<hr class="divider" />

<div class="terminal-block">
<div class="line">
<span class="prompt">guest@codepvg</span
><span class="prompt-sym">:~$</span>
<span class="cmd" id="cd-line"> cd /unknown-path</span>
</div>
<div class="line error-line">
bash: cd: <span id="path-display">/unknown-path</span>: No such file
or directory
</div>
</div>

<div class="terminal-block">
<div class="line comment"># exit code: 404</div>
<div class="line comment">
# This route doesn't exist. Unlike your rank, which does.
</div>
</div>

<hr class="divider" />

<div class="terminal-block">
<div class="line">
<span class="prompt">guest@codepvg</span
><span class="prompt-sym">:~$</span>
<span class="cmd"> ls /valid-routes</span>
</div>
<div class="line" style="padding-left: 1.2rem">
<span class="highlight"><a href="/leaderboard">leaderboard/</a></span>
&nbsp;&nbsp;
<span class="highlight"
><a href="/registration">registration/</a></span
>
&nbsp;&nbsp;
<span class="highlight"><a href="/about">about/</a></span>
</div>
</div>

<div class="line">
<span class="prompt">guest@codepvg</span
><span class="prompt-sym">:~$</span>
<span
class="cursor"
style="
width: 9px;
height: 1rem;
background: var(--green);
display: inline-block;
vertical-align: middle;
margin-left: 6px;
animation: blink 1s step-end infinite;
"
></span>
</div>

<div class="nav-links">
<a href="/leaderboard" class="btn btn-primary">view_leaderboard</a>
<a href="/registration" class="btn btn-secondary">register_now</a>
</div>
</div>

<script>
// Inject actual bad path
const p = window.location.pathname;
document.getElementById("cd-line").textContent = " cd " + p;
document.getElementById("path-display").textContent = p;

// Matrix rain
const canvas = document.getElementById("matrix");
const ctx = canvas.getContext("2d");

function resize() {
canvas.width = window.innerWidth;
canvas.height = window.innerHeight;
}
resize();
window.addEventListener("resize", resize);

const chars =
"ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789@#$%^&*()アイウエオカキクケコサシスセソタチツテトナニヌネノ";
const fontSize = 14;
let cols = Math.floor(canvas.width / fontSize);
let drops = Array(cols).fill(1);

function drawMatrix() {
ctx.fillStyle = "rgba(0, 0, 0, 0.05)";
ctx.fillRect(0, 0, canvas.width, canvas.height);

ctx.fillStyle = "#00ff41";
ctx.font = fontSize + "px Share Tech Mono, monospace";

cols = Math.floor(canvas.width / fontSize);
if (drops.length < cols)
drops = drops.concat(Array(cols - drops.length).fill(1));

for (let i = 0; i < cols; i++) {
const char = chars[Math.floor(Math.random() * chars.length)];
ctx.fillText(char, i * fontSize, drops[i] * fontSize);
if (drops[i] * fontSize > canvas.height && Math.random() > 0.975)
drops[i] = 0;
drops[i]++;
}
}

setInterval(drawMatrix, 40);
</script>
</body>
</html>
5 changes: 3 additions & 2 deletions server.js
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Original file line number Diff line number Diff line change
@@ -1,6 +1,6 @@
const express = require("express");
const cors = require("cors");
const path = require("path");
const cors = require("cors");

const app = express();
const PORT = process.env.PORT || 3000;
Expand Down Expand Up @@ -57,8 +57,9 @@ app.get("/api/student/:username", async (req, res) => {
}
});

// 404 handler
app.use((req, res) => {
res.status(404).send("Page not found");
res.status(404).sendFile(path.join(__dirname, "frontend", "404.html"));
});

app.listen(PORT, () => {
Expand Down
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