@font-face {
    font-family: "IBM Plex Sans";
    src: url("/assets/fonts/IBMPlexSans-Regular.ttf") format("truetype");
    font-weight: 400;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: "IBM Plex Sans";
    src: url("/assets/fonts/IBMPlexSans-Bold.ttf") format("truetype");
    font-weight: 600;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: "JetBrains Mono";
    src: url("/assets/fonts/JetBrainsMono-Regular.ttf") format("truetype");
    font-weight: 400;
    font-style: normal;
    font-display: swap;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html, body { height: 100%; overflow: hidden; }

body {
    background: #0d1116;
    color: #e6eaf2;
    font-family: "IBM Plex Sans", system-ui, sans-serif;
}

canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
}

.container {
    position: relative;
    z-index: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100%;
    text-align: center;
}

.content {
    max-width: 800px;
    padding: 2rem;
}

h1 {
    font-weight: 600;
    font-size: clamp(2.5rem, 5vw, 4rem);
    letter-spacing: 0.04em;
    margin-bottom: 1.2rem;
}

.subtitle {
    font-size: clamp(1.1rem, 2vw, 1.4rem);
    color: #b8c2d9;
    margin-bottom: 2rem;
}

.tagline {
    font-family: "JetBrains Mono", monospace;
    font-size: 0.95rem;
    color: #8fa0c6;
    line-height: 1.8;
    letter-spacing: 0.03em;
}

.error-code {
    font-family: "JetBrains Mono", monospace;
    font-weight: 600;
    font-size: clamp(6rem, 15vw, 12rem);
    letter-spacing: 0.08em;
    color: #e6eaf2;
    line-height: 1;
    margin-bottom: 1rem;
}

.home-link {
    display: inline-block;
    margin-top: 2rem;
    padding: 0.7rem 2rem;
    font-family: "JetBrains Mono", monospace;
    font-size: 0.9rem;
    color: #e6eaf2;
    border: 1px solid #8fa0c6;
    text-decoration: none;
    letter-spacing: 0.05em;
    transition: background 0.2s, border-color 0.2s;
    pointer-events: auto;
}

.home-link:hover {
    background: rgba(143, 160, 198, 0.15);
    border-color: #e6eaf2;
}