:root {
    --x3z3-bg: #0f1115;
    --x3z3-surface: #15181f;
    --x3z3-surface-hover: #1b2029;
    --x3z3-border: #2a2f3a;
    --x3z3-text: #f2f4f7;
    --x3z3-muted: #9ca3af;
    --x3z3-dim: #555d6b;
    --x3z3-accent: #7dd3fc;
    --x3z3-online: #22c55e;
}

* {
    box-sizing: border-box;
}

html,
body {
    min-height: 100%;
    margin: 0;
    background: var(--x3z3-bg);
}

body {
    color: var(--x3z3-text);
    font-family: Consolas, "Courier New", monospace;
}


/* Layout */

.x3z3-page {
    width: min(700px, calc(100% - 40px));
    margin: 0 auto;
    padding: 80px 0 50px;
}

.x3z3-centred {
    min-height: 100vh;
    display: flex;
    align-items: center;
}

.x3z3-shell {
    width: 100%;
}


/* Typography */

.x3z3-prompt {
    margin-bottom: 18px;
    color: var(--x3z3-accent);
    font-size: 14px;
}

.x3z3-title {
    margin: 0;
    font-size: clamp(52px, 10vw, 96px);
    line-height: 0.9;
    letter-spacing: -4px;
}

.x3z3-title-small {
    margin: 0;
    font-size: 42px;
    line-height: 1;
    letter-spacing: -2px;
}

.x3z3-subtitle {
    margin-top: 20px;
    color: var(--x3z3-muted);
    font-size: 16px;
    line-height: 1.6;
}

.x3z3-muted {
    color: var(--x3z3-muted);
}


/* Status */

.x3z3-status {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-top: 30px;
    padding: 8px 12px;
    border: 1px solid var(--x3z3-border);
    border-radius: 6px;
    background: var(--x3z3-surface);
    color: #cbd5e1;
    font-size: 13px;
}

.x3z3-status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--x3z3-online);
    box-shadow: 0 0 12px rgba(34, 197, 94, 0.8);
}


/* Forms */

.x3z3-input,
.x3z3-textarea {
    width: 100%;
    padding: 12px 14px;
    border: 1px solid var(--x3z3-border);
    border-radius: 6px;
    background: var(--x3z3-surface);
    color: var(--x3z3-text);
    font: inherit;
    font-size: 14px;
    outline: none;
}

.x3z3-textarea {
    min-height: 120px;
    resize: vertical;
}

.x3z3-input:focus,
.x3z3-textarea:focus {
    border-color: var(--x3z3-accent);
}


/* Buttons */

.x3z3-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 12px;
}

.x3z3-button {
    padding: 10px 14px;
    border: 1px solid var(--x3z3-border);
    border-radius: 6px;
    background: var(--x3z3-surface);
    color: var(--x3z3-text);
    font: inherit;
    cursor: pointer;
}

.x3z3-button:hover {
    background: var(--x3z3-surface-hover);
}


/* Panels */

.x3z3-panel {
    margin-top: 28px;
    padding: 20px;
    border: 1px solid var(--x3z3-border);
    border-radius: 8px;
    background: var(--x3z3-surface);
}


/* Footer */

.x3z3-footer {
    margin-top: 55px;
    color: var(--x3z3-dim);
    font-size: 12px;
}


/* Responsive */

@media (max-width: 600px) {

    .x3z3-page {
        padding-top: 50px;
    }

    .x3z3-actions {
        flex-direction: column;
    }

    .x3z3-button {
        width: 100%;
    }
}
```