@font-face {
    font-family: "Quicksand";
    src: local("Quicksand");
    font-display: swap;
}
@font-face {
    font-family: "TerminalGrotesque";
    src: url("/static/terminal-grotesque_open.otf") format("opentype");
    font-style: normal;
    font-display: swap;
}

:root {
    --bg-main: #101820;
    --bg-content: #18222d;
    --accent: #00ff99;
    --accent-soft: #33ffbb;
    --text-main: #e0ffe0;
    --text-link: #00e6e6;
    --text-link-hover: #fff;
    --border: #222c38;
    --header-bg: #16202a;
    --footer-bg: #16202a;
    --shadow: 0 2px 16px rgba(0,0,0,0.15);
    --radius: 10px;
    --font-main: 'Quicksand', 'Segoe UI', Arial, sans-serif;
    --font-mono: 'Fira Mono', 'Consolas', monospace;
}

html, body {
    height: 100%;
    margin: 0;
    padding: 0;
    background: var(--bg-main);
    color: var(--text-main);
    font-family: var(--font-main);
    font-size: 18px;
    line-height: 1.6;
    min-height: 100vh;
    box-sizing: border-box;
    scroll-behavior: smooth;
}

body {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    min-height: 100vh;
    background-size: 20px 20px;
    cursor: crosshair;
}

a {
    color: var(--text-link);
    text-decoration: underline;
    transition: color 0.2s;
    font-weight: 500;
}
a:hover, a:focus {
    color: var(--text-link-hover);
    background: var(--accent);
    text-decoration: none;
    border-radius: var(--radius);
    padding: 0 2px;
}

canvas {
    display: block;
    z-index: -3;
}

#topbar {
    width: 100%;
    text-align: center;
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    background: var(--header-bg);
    color: var(--accent);
    font-family: var(--font-mono);
    font-size: 1.2em;
    letter-spacing: 0.05em;
    box-shadow: var(--shadow);
    animation: slideDown 1.2s cubic-bezier(.68,-0.55,.27,1.55) backwards;
}

@keyframes slideDown {
    0% { transform: translateY(-50px); opacity: 0; }
    100% { transform: translateY(0); opacity: 1; }
}

.button, .btn {
    display: inline-block;
    padding: 10px 18px;
    margin: 0 4px;
    border: none;
    border-radius: var(--radius);
    background: var(--accent);
    color: #101820;
    font-size: 1em;
    font-family: var(--font-main);
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s, color 0.2s, box-shadow 0.2s;
    box-shadow: 0 1px 4px rgba(0,0,0,0.08);
}
.button:hover, .btn:hover {
    background: var(--accent-soft);
    color: #000;
}

.content {
    background: var(--bg-content);
    color: var(--text-main);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 32px 6vw;
    margin: 32px 0;
    width: 90vw;
    max-width: 900px;
    text-align: left;
    font-size: 1.1em;
    overflow-x: auto;
}

.content img {
    max-width: 100%;
    border-radius: 6px;
    box-shadow: 0 1px 8px rgba(0,0,0,0.12);
    margin: 16px 0;
    display: block;
}

h1, h2, h3, h4 {
    color: var(--accent);
    font-family: var(--font-mono);
    font-weight: 700;
    margin-top: 1.5em;
    margin-bottom: 0.5em;
    text-align: center;
    letter-spacing: 0.03em;
}
h1 { font-size: 2.2em; }
h2 { font-size: 1.5em; }
h3 { font-size: 1.2em; }

#footer {
    color: var(--text-main);
    width: 100vw;
    font-size: 0.95em;
    background: var(--footer-bg);
    text-align: center;
    padding: 18px 10px 10px 10px;
    position: relative;
    border-top: 1px solid var(--border);
    border-radius: 0 0 var(--radius) var(--radius);
    box-shadow: 0 -1px 8px rgba(0,0,0,0.08);
    margin-top: auto;
}
#footer a {
    color: var(--accent);
    font-size: inherit;
    text-decoration: underline;
}
#footer a:hover {
    color: var(--text-link-hover);
    background: var(--accent-soft);
}

header, footer, div.page {
    width: 100%;
    max-width: 760px;
    margin: 0 auto;
    background: var(--header-bg);
    padding: 20px 30px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

header h1 {
    color: var(--accent);
    margin: 0;
    font-weight: 700;
    font-size: 2.5em;
    letter-spacing: 0.04em;
}

header nav ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    gap: 18px;
    justify-content: center;
}

header nav ul li {
    display: inline;
    margin: 0;
    padding: 0;
}

div.page {
    background: var(--bg-content);
}

#grid-canvas,
#particle-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    pointer-events: none;
}

#grid-canvas {
    z-index: -20;
}

#particle-canvas {
    background-color: transparent;
    z-index: 10002;
}

#coords {
    position: fixed;
    bottom: 16px;
    right: 16px;
    background: rgba(16, 24, 32, 0.85);
    color: var(--accent);
    padding: 8px 14px;
    border-radius: 6px;
    font-family: var(--font-mono);
    font-size: 1em;
    z-index: 1001;
    box-shadow: 0 1px 8px rgba(0,0,0,0.18);
    transition: all 0.2s ease;
    cursor: crosshair;
    user-select: none;
    opacity: 0.95;
}
#coords.decrypted {
    background: rgba(16, 24, 32, 0.98);
    color: #fff;
}