/* GS Commander: a page set like a 1986 computer magazine */
@font-face {
    font-family: "Shaston";
    src: url("fonts/Shaston640.ttf") format("truetype");
    font-display: swap;
}

:root {
    --desk: #3a332c;
    --paper: #f4eddc;
    --paper-dark: #e8dcc0;
    --ink: #1f1b16;
    --ink-soft: #4a4238;
    --red: #c3261f;
    --blue: #1f3f8f;
    --rule: #1f1b16;
    --case: #d8cfbd;
    --case-edge: #b9ae99;
    --bezel: #1c1a18;
    --g1: #5ebd3e; --g2: #ffb900; --g3: #f78200;
    --g4: #e23838; --g5: #973999; --g6: #009cdf;
    --serif: "Source Serif 4", "Times New Roman", Georgia, serif;
    --head: "Archivo", "Helvetica Neue", Arial, sans-serif;
    --screen: "Shaston", "Monaco", monospace;
}

* { box-sizing: border-box; }

html { background: var(--desk); }

body {
    margin: 0;
    padding: 40px 16px 60px;
    background:
        radial-gradient(ellipse at 30% 0%, rgba(255,255,255,.06), transparent 60%),
        var(--desk);
    color: var(--ink);
    font-family: var(--serif);
    font-size: 17px;
    line-height: 1.5;
}

/* the sheet of paper */
.page {
    max-width: 1080px;
    margin: 0 auto;
    padding: 34px 48px 40px;
    background-color: var(--paper);
    background-image:
        radial-gradient(rgba(80,60,30,.05) 1px, transparent 1px),
        radial-gradient(rgba(80,60,30,.04) 1px, transparent 1px);
    background-size: 7px 7px, 11px 11px;
    background-position: 0 0, 3px 5px;
    box-shadow: 0 2px 0 #d9ceb4, 0 20px 50px rgba(0,0,0,.45);
}

a { color: var(--blue); }
a:hover { color: var(--red); }

/* masthead */
.folio {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    flex-wrap: wrap;
    font-family: var(--head);
    font-size: 12px;
    font-weight: 700;
    letter-spacing: .14em;
    text-transform: uppercase;
    border-bottom: 1px solid var(--rule);
    padding-bottom: 6px;
}
.masthead {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 16px;
    flex-wrap: wrap;
    padding: 10px 0 8px;
}
.masthead .title {
    font-family: var(--head);
    font-stretch: 62%;
    font-weight: 900;
    font-size: clamp(40px, 8vw, 86px);
    line-height: .85;
    letter-spacing: -.01em;
    text-transform: uppercase;
    margin: 0;
}
.masthead .title span { color: var(--red); }
.masthead .issue {
    font-family: var(--head);
    font-stretch: 75%;
    font-weight: 700;
    font-size: 15px;
    text-align: right;
    text-transform: uppercase;
    line-height: 1.25;
}
.stripes {
    height: 18px;
    background: linear-gradient(to bottom,
        var(--g1) 0 16.66%, var(--g2) 16.66% 33.33%, var(--g3) 33.33% 50%,
        var(--g4) 50% 66.66%, var(--g5) 66.66% 83.33%, var(--g6) 83.33% 100%);
    border-top: 3px solid var(--rule);
    border-bottom: 3px solid var(--rule);
}

/* the article's head */
.kicker {
    display: inline-block;
    margin: 26px 0 0;
    padding: 3px 10px 2px;
    background: var(--red);
    color: var(--paper);
    font-family: var(--head);
    font-weight: 800;
    font-size: 13px;
    letter-spacing: .16em;
    text-transform: uppercase;
}
h1 {
    font-family: var(--head);
    font-stretch: 68%;
    font-weight: 900;
    font-size: clamp(56px, 12vw, 136px);
    line-height: .86;
    letter-spacing: -.015em;
    text-transform: uppercase;
    margin: 12px 0 10px;
}
.dek {
    font-style: italic;
    font-size: clamp(20px, 2.6vw, 27px);
    line-height: 1.3;
    max-width: 820px;
    margin: 0 0 12px;
}
.byline {
    font-family: var(--head);
    font-size: 13px;
    font-weight: 700;
    letter-spacing: .12em;
    text-transform: uppercase;
    border-top: 3px double var(--rule);
    border-bottom: 1px solid var(--rule);
    padding: 7px 0 6px;
    margin-bottom: 26px;
}

/* body copy in columns */
.columns {
    column-count: 3;
    column-gap: 34px;
    column-rule: 1px solid rgba(31,27,22,.35);
    text-align: justify;
    hyphens: auto;
}
.columns p { margin: 0 0 .8em; }
.columns > :first-child { margin-top: 0; }
.dropcap::first-letter {
    float: left;
    font-family: var(--head);
    font-stretch: 68%;
    font-weight: 900;
    font-size: 5.2em;
    line-height: .78;
    padding: 6px 8px 0 0;
    color: var(--red);
}
h2 {
    font-family: var(--head);
    font-stretch: 75%;
    font-weight: 900;
    font-size: 25px;
    line-height: 1.05;
    text-transform: uppercase;
    text-align: left;
    margin: 1.1em 0 .4em;
    break-after: avoid;
    break-inside: avoid;
}
h2::before {
    content: "";
    display: block;
    width: 44px;
    height: 5px;
    background: var(--red);
    margin-bottom: 8px;
}
h3 {
    font-family: var(--head);
    font-weight: 800;
    font-size: 15px;
    letter-spacing: .08em;
    text-transform: uppercase;
    margin: 0 0 6px;
}
.columns ul { margin: 0 0 .8em; padding-left: 1.1em; text-align: left; }
.columns li { margin-bottom: .2em; }
kbd {
    font-family: var(--screen);
    font-size: .82em;
    padding: 0 .35em;
    border: 1px solid var(--ink-soft);
    border-bottom-width: 2px;
    border-radius: 3px;
    background: #fbf7ec;
    white-space: nowrap;
}

/* a screenshot: a photo of the monitor */
figure { margin: 0 0 1.1em; break-inside: avoid; }
.monitor {
    background: linear-gradient(#e2dac9, var(--case));
    border: 1px solid var(--case-edge);
    border-radius: 14px;
    padding: 14px 14px 22px;
    box-shadow: inset 0 -6px 0 rgba(0,0,0,.08), 3px 4px 0 rgba(31,27,22,.18);
    position: relative;
}
.monitor::after {           /* the power light */
    content: "";
    position: absolute;
    right: 18px;
    bottom: 8px;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: #5ebd3e;
    box-shadow: 0 0 4px #5ebd3e;
}
.monitor .glass {
    background: var(--bezel);
    border-radius: 10px;
    padding: 10px;
}
.monitor img {
    display: block;
    width: 100%;
    height: auto;
    aspect-ratio: 4 / 3;      /* as the IIgs monitor showed 640 by 200 */
    image-rendering: pixelated;
    border-radius: 8px / 10px;
    filter: saturate(1.08) contrast(1.03);
}
figcaption {
    font-family: var(--head);
    font-size: 13.5px;
    line-height: 1.35;
    text-align: left;
    margin-top: 8px;
    color: var(--ink-soft);
}
figcaption b {
    color: var(--red);
    font-weight: 800;
    letter-spacing: .06em;
    text-transform: uppercase;
    margin-right: .3em;
}

/* the opening spread: big screenshot and the facts box */
.lead {
    display: grid;
    grid-template-columns: minmax(0, 2fr) minmax(0, 1fr);
    gap: 34px;
    margin-bottom: 30px;
    align-items: start;
}
.box {
    background: var(--paper-dark);
    border-top: 6px solid var(--rule);
    padding: 14px 16px 12px;
    font-family: var(--head);
    font-size: 14.5px;
    line-height: 1.4;
}
.box dl { margin: 0; }
.box dt {
    font-weight: 800;
    font-size: 11.5px;
    letter-spacing: .14em;
    text-transform: uppercase;
    color: var(--red);
    margin-top: 10px;
}
.box dt:first-child { margin-top: 0; }
.box dd { margin: 2px 0 0; }
.box .get {
    display: block;
    margin-top: 14px;
    padding: 9px 10px 8px;
    background: var(--ink);
    color: var(--paper);
    text-align: center;
    font-weight: 800;
    letter-spacing: .1em;
    text-transform: uppercase;
    text-decoration: none;
}
.box .get:hover { background: var(--red); color: var(--paper); }

/* full-width pieces between the column blocks */
.spread { margin: 34px 0 30px; }
.spread-head {
    display: flex;
    align-items: baseline;
    gap: 16px;
    flex-wrap: wrap;
    border-top: 6px solid var(--rule);
    border-bottom: 1px solid var(--rule);
    padding: 8px 0 6px;
    margin-bottom: 20px;
}
.spread-head h2 { margin: 0; font-size: 34px; }
.spread-head h2::before { display: none; }
.spread-head p { margin: 0; font-style: italic; font-size: 18px; }
.grid2 {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 26px 30px;
}
.grid3 {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 26px 26px;
}

/* the quick reference card: the ten keys */
.card {
    border: 2px solid var(--rule);
    background: #fbf7ec;
    padding: 14px 16px 10px;
    margin: 0 0 1.1em;
    break-inside: avoid;
    text-align: left;
}
.card table { width: 100%; border-collapse: collapse; font-size: 15px; }
.card td { padding: 3px 0; border-bottom: 1px dotted rgba(31,27,22,.4); vertical-align: top; }
.card td:first-child { width: 4.2em; }
.card tr:last-child td { border-bottom: 0; }
.keybar {
    display: grid;
    grid-template-columns: repeat(10, 1fr);
    border: 2px solid var(--rule);
    margin: 0 0 24px;
    font-family: var(--screen);
    font-size: 14px;
    background: #0d1f9b;
}
.keybar span {
    padding: 6px 4px 5px;
    color: #000;
    background: #2ed2d2;
    border-right: 2px solid #0d1f9b;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: clip;
}
.keybar span:last-child { border-right: 0; }
.keybar b { color: #fff; background: #000; padding: 0 3px; margin-right: 3px; font-weight: normal; }

/* the order coupon */
.coupon {
    position: relative;
    margin: 40px 0 26px;
    border: 3px dashed var(--ink);
    padding: 22px 26px 20px;
    background: #fbf7ec;
    display: grid;
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
    gap: 24px;
}
.coupon .scissors {
    position: absolute;
    top: -17px;
    left: 26px;
    background: var(--paper);
    padding: 0 6px;
    font-size: 24px;
    line-height: 1;
}
.coupon h2 { margin-top: 0; font-size: 30px; }
.coupon h2::before { display: none; }
.coupon p { margin: 0 0 .6em; }
.coupon .lines {
    font-family: var(--head);
    font-size: 14px;
    text-align: left;
}
.coupon .lines div {
    border-bottom: 1px solid var(--ink);
    padding: 12px 0 3px;
    color: var(--ink-soft);
}
.coupon .check { font-family: var(--head); font-size: 15px; line-height: 1.8; }
.coupon .check span { font-family: var(--screen); margin-right: 6px; }
.buttons { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 12px; }
.buttons a {
    padding: 9px 16px 8px;
    border: 2px solid var(--ink);
    font-family: var(--head);
    font-weight: 800;
    font-size: 14px;
    letter-spacing: .1em;
    text-transform: uppercase;
    text-decoration: none;
    color: var(--ink);
}
.buttons a.main { background: var(--ink); color: var(--paper); }
.buttons a:hover { background: var(--red); border-color: var(--red); color: var(--paper); }

.footer {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    flex-wrap: wrap;
    border-top: 1px solid var(--rule);
    padding-top: 8px;
    font-family: var(--head);
    font-size: 12px;
    font-weight: 700;
    letter-spacing: .12em;
    text-transform: uppercase;
}
.note {
    font-size: 13.5px;
    color: var(--ink-soft);
    font-style: italic;
    margin: 0 0 14px;
}

.back {
    display: block;
    max-width: 1080px;
    margin: 0 auto 14px;
    color: #e8dcc0;
    font-family: var(--head);
    font-size: 13px;
    letter-spacing: .1em;
    text-transform: uppercase;
    text-decoration: none;
}
.back:hover { color: #fff; }

/* narrower screens */
@media (max-width: 900px) {
    .page { padding: 26px 26px 30px; }
    .columns { column-count: 2; }
    .lead { grid-template-columns: 1fr; }
    .grid3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .keybar { grid-template-columns: repeat(5, 1fr); }
    .keybar span:nth-child(5) { border-right: 0; }
    .keybar span:nth-child(-n+5) { border-bottom: 2px solid #0d1f9b; }
}
@media (max-width: 620px) {
    body { padding: 0 0 30px; font-size: 16.5px; }
    .back { padding: 12px 16px 0; }
    .page { padding: 20px 16px 24px; box-shadow: none; }
    .columns { column-count: 1; text-align: left; }
    .grid2, .grid3 { grid-template-columns: 1fr; }
    .coupon { grid-template-columns: 1fr; padding: 20px 16px 16px; }
    .masthead .issue { text-align: left; }
    .monitor { padding: 9px 9px 16px; border-radius: 10px; }
    .monitor .glass { padding: 6px; border-radius: 7px; }
    .keybar { font-size: 12px; }
}

/* the index: more software by the author, as a magazine's index page */
.index {
    margin: 0 0 26px;
    border-top: 6px solid var(--rule);
}
.index-head {
    display: flex;
    align-items: baseline;
    gap: 16px;
    flex-wrap: wrap;
    border-bottom: 1px solid var(--rule);
    padding: 8px 0 6px;
    margin-bottom: 14px;
}
.index-head h2 { margin: 0; font-size: 34px; }
.index-head h2::before { display: none; }
.index-head p { margin: 0; font-style: italic; font-size: 18px; }
.index-cols {
    column-count: 4;
    column-gap: 30px;
    column-rule: 1px solid rgba(31,27,22,.35);
}
.index-group { break-inside: avoid; margin-bottom: 14px; }
.index-group h3 { color: var(--red); font-size: 12.5px; margin-bottom: 4px; }
.index-group ul { list-style: none; margin: 0; padding: 0; }
.index-group li { font-family: var(--head); font-size: 14.5px; line-height: 1.75; }
.index-group a {
    display: flex;
    gap: 6px;
    color: var(--ink);
    text-decoration: none;
}
.index-group a::after {          /* a dotted leader to the arrow */
    content: "";
    flex: 1;
    border-bottom: 2px dotted rgba(31,27,22,.45);
    margin-bottom: 7px;
}
.index-group a span { order: 0; }
.index-group a:hover { color: var(--red); }
.index-group a:hover::after { border-color: var(--red); }
@media (max-width: 900px) { .index-cols { column-count: 3; } }
@media (max-width: 620px) { .index-cols { column-count: 2; } }

/* the box in 3D (its faces are pictures made by GS Commander's docs/boxart) */
.box-row {
    display: grid;
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
    gap: 40px;
    align-items: center;
}
.box-stage {
    --W: min(300px, 62vw);
    --H: calc(var(--W) * 1180 / 900);
    --D: calc(var(--W) * 170 / 900);
    position: relative;
    margin: 0;
    padding: 50px 0 10px;
    perspective: 1600px;
    background: radial-gradient(ellipse 70% 60% at 50% 45%, #fbf7ec 0%, rgba(244,237,220,0) 70%);
}
.box3d {
    position: relative;
    width: var(--W);
    height: var(--H);
    margin: 0 auto;
    transform-style: preserve-3d;
    transition: transform .9s cubic-bezier(.3,.1,.2,1);
    cursor: grab;
    touch-action: pan-y;
    user-select: none;
    -webkit-user-select: none;
}
.box3d.dragging { transition: none; cursor: grabbing; }
.bf { position: absolute; overflow: hidden; backface-visibility: hidden; background: #f4f0e6; }
.bf img { display: block; width: 100%; height: 100%; pointer-events: none; -webkit-user-drag: none; }
.bf::after { content: ""; position: absolute; inset: 0; pointer-events: none; }
.b-front, .b-back { width: var(--W); height: var(--H); }
.b-front { transform: translateZ(calc(var(--D) / 2)); }
.b-back { transform: rotateY(180deg) translateZ(calc(var(--D) / 2)); }
.b-left, .b-right { width: var(--D); height: var(--H); left: calc((var(--W) - var(--D)) / 2); }
.b-left { transform: rotateY(-90deg) translateZ(calc(var(--W) / 2)); }
.b-right { transform: rotateY(90deg) translateZ(calc(var(--W) / 2)); }
.b-top, .b-bottom { width: var(--W); height: var(--D); top: calc((var(--H) - var(--D)) / 2); }
.b-top { transform: rotateX(90deg) translateZ(calc(var(--H) / 2)); }
.b-bottom { transform: rotateX(-90deg) translateZ(calc(var(--H) / 2)); background: #d9d2c2; }
/* light from the front right: the sides darker, the top lighter */
.b-front::after { background: linear-gradient(105deg, rgba(0,0,0,.08), rgba(255,255,255,0) 40%, rgba(255,255,255,.12) 100%); }
.b-back::after { background: rgba(0,0,0,.06); }
.b-left::after { background: rgba(40,30,20,.28); }
.b-right::after { background: rgba(40,30,20,.12); }
.b-top::after { background: rgba(255,255,255,.18); }
.box-floor {
    width: calc(var(--W) * 1.25);
    height: 34px;
    margin: 14px auto 0;
    background: radial-gradient(ellipse at center, rgba(40,30,20,.45) 0%, rgba(40,30,20,0) 70%);
    filter: blur(3px);
}
.box-stage figcaption { text-align: center; margin-top: 10px; }
.box-text p { margin: 0 0 .8em; font-size: 18px; }
@media (prefers-reduced-motion: reduce) { .box3d { transition: none; } }
@media (max-width: 900px) { .box-row { grid-template-columns: 1fr; } }