:root {
    --bg: #0d1117;
    --panel: #12161d;
    --term-bg: #1c2029;
    --edge: #262c36;
    --text: #c9d1d9;
    --muted: #8b949e;
    --accent: #4dc4ff;
    --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    padding: 0 1.25rem 4rem;
    background: var(--bg);
    color: var(--text);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

.wrap { max-width: 62rem; margin: 0 auto; }

header { padding: 3.5rem 0 2rem; }

h1 {
    margin: 0 0 .5rem;
    font-size: clamp(1.75rem, 4vw, 2.6rem);
    letter-spacing: -.02em;
    line-height: 1.15;
}

.sub { margin: 0 0 1.25rem; color: var(--muted); font-size: 1.05rem; max-width: 46rem; }

.chips { display: flex; flex-wrap: wrap; gap: .4rem; margin-bottom: 1.5rem; }

.chip {
    font-family: var(--mono);
    font-size: .74rem;
    color: var(--muted);
    border: 1px solid var(--edge);
    border-radius: 999px;
    padding: .2rem .65rem;
}

a { color: var(--accent); }

/* ---- terminal ---- */

.terminal {
    background: var(--panel);
    border: 1px solid var(--edge);
    border-radius: 10px;
    overflow: hidden;
}

.bar {
    display: flex;
    align-items: center;
    gap: .75rem;
    padding: .55rem .75rem;
    border-bottom: 1px solid var(--edge);
    background: #0f1319;
}

.lights { display: flex; gap: .38rem; padding-right: .25rem; }
.lights i { width: .7rem; height: .7rem; border-radius: 50%; display: block; }
.lights i:nth-child(1) { background: #ff5f57; }
.lights i:nth-child(2) { background: #febc2e; }
.lights i:nth-child(3) { background: #28c840; }

#tabs { display: flex; gap: .25rem; flex-wrap: wrap; }

#tabs button, #toggle {
    font-family: var(--mono);
    font-size: .78rem;
    color: var(--muted);
    background: transparent;
    border: 1px solid transparent;
    border-radius: 6px;
    padding: .22rem .6rem;
    cursor: pointer;
}

#tabs button:hover, #toggle:hover { color: var(--text); background: #1b212a; }
#tabs button.active { color: #0d1117; background: var(--accent); font-weight: 600; }

#toggle { margin-left: auto; border-color: var(--edge); min-width: 4.2rem; }

.screen-wrap { background: var(--term-bg); padding: .85rem 1rem; overflow-x: auto; }

#screen {
    margin: 0;
    font-family: var(--mono);
    /* 100 columns at ~0.6em per glyph; shrink to fit, then scroll. */
    font-size: clamp(7px, 1.16vw, 13.5px);
    line-height: 1.28;
    color: #c4c7cc;
    white-space: pre;
    tab-size: 8;
}

.track { height: 2px; background: var(--edge); }
#progress { height: 100%; width: 0; background: var(--accent); transition: width .1s linear; }

#blurb {
    margin: 1rem 0 0;
    color: var(--muted);
    font-size: .93rem;
    min-height: 3.4rem;
}

#blurb strong { color: var(--text); font-weight: 600; }

/* ---- prose ---- */

section { margin-top: 3.5rem; }

h2 {
    font-size: 1.15rem;
    margin: 0 0 1rem;
    padding-bottom: .5rem;
    border-bottom: 1px solid var(--edge);
}

table { width: 100%; border-collapse: collapse; font-size: .92rem; }
th, td { text-align: left; padding: .5rem .6rem; border-bottom: 1px solid var(--edge); vertical-align: top; }
th { color: var(--muted); font-weight: 600; width: 11rem; }
td code, p code, li code { font-family: var(--mono); font-size: .86em; color: var(--accent); }

.note {
    margin-top: 1.25rem;
    padding: .85rem 1rem;
    border-left: 2px solid var(--edge);
    color: var(--muted);
    font-size: .9rem;
}

footer {
    margin-top: 4rem;
    padding-top: 1.25rem;
    border-top: 1px solid var(--edge);
    color: var(--muted);
    font-size: .85rem;
}

@media (max-width: 640px) {
    header { padding-top: 2.25rem; }
    #toggle { margin-left: 0; }
    th { width: auto; }
}