/* OSD/OS's landing page, in the app's own look: Video 1's blue, white
   letters, double rules and hard shadows. Headings, labels and buttons are
   in VCR OSD Mono, the deck's letters; running text in the system's own
   face, which reads better small. Nothing here is smaller than 12 px. */

@font-face {
    font-family: "VCR OSD Mono";
    src: url("fonts/VCR_OSD_MONO_1.001.ttf") format("truetype");
    font-weight: 400;
    font-style: normal;
    font-display: swap;
}

:root {
    --bg: #0110c5;
    --surface: #030b89;
    --shadow: #000675;
    --shadow-deep: #000451;
    --line: #99a5f6;
    --ink: #ffffff;
    --muted: #d0d6ff;
    --deck: "VCR OSD Mono", "Courier New", monospace;
    --text: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

* { box-sizing: border-box; }

html {
    scroll-behavior: smooth;
    scroll-padding-top: 100px;
}

body {
    margin: 0;
    background: var(--bg);
    color: var(--ink);
    font-family: var(--text);
    -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; cursor: pointer; }
a, button, summary { -webkit-tap-highlight-color: transparent; }
a:focus-visible, button:focus-visible, summary:focus-visible {
    outline: 3px solid var(--ink);
    outline-offset: 4px;
}
img { display: block; max-width: 100%; }
p { font-size: 16px; line-height: 1.65; color: var(--muted); }
h1, h2, h3 { font-family: var(--deck); font-weight: 400; letter-spacing: 0; margin: 0; }
[hidden] { display: none !important; }

.icon-defs { position: absolute; width: 0; height: 0; overflow: hidden; }
.pixel-icon {
    display: inline-block;
    width: 16px;
    height: 16px;
    fill: currentColor;
    vertical-align: -2px;
    flex-shrink: 0;
    shape-rendering: crispEdges;
}

.skip {
    position: absolute;
    top: -80px;
    left: 16px;
    padding: 14px;
    background: var(--ink);
    color: var(--bg);
    font-family: var(--deck);
    z-index: 10;
}
.skip:focus { top: 12px; }

.wrap {
    width: min(1240px, calc(100% - 80px));
    margin: auto;
}

/* --- The bar on top. */
.header {
    max-width: 1400px;
    margin: auto;
    min-height: 92px;
    padding: 12px 36px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 16px 28px;
    border-bottom: 3px double var(--ink);
}
.wordmark img { height: 60px; width: 176px; object-fit: contain; }
.header nav {
    display: flex;
    flex-wrap: wrap;
    gap: 8px 22px;
    font-family: var(--deck);
    font-size: 16px;
    text-transform: uppercase;
}
.header nav a { padding: 4px 6px; }
.header nav a:hover, .footer-links a:hover { background: var(--ink); color: var(--bg); }
.nav-setup {
    font-family: var(--deck);
    font-size: 16px;
    text-transform: uppercase;
    border: 2px solid var(--ink);
    padding: 12px 14px;
    box-shadow: 4px 4px 0 var(--shadow);
    white-space: nowrap;
}
.nav-setup:hover { background: var(--ink); color: var(--bg); }

/* --- Labels in the deck's letters. */
.eyebrow, .section-label, .micro, .mini-label, .small-title, .tags {
    font-family: var(--deck);
    font-size: 14px;
    line-height: 1.5;
    color: var(--ink);
    margin: 0;
}
.eyebrow { display: flex; align-items: center; gap: 10px; }
.led {
    display: inline-block;
    width: 8px;
    height: 8px;
    background: currentColor;
    flex-shrink: 0;
}
.section-label {
    display: table;
    background: var(--ink);
    color: var(--bg);
    padding: 7px 10px;
    margin-bottom: 27px;
    font-size: 15px;
}

/* --- The opening. */
.hero {
    padding-top: 48px;
    padding-bottom: 48px;
    display: grid;
    grid-template-columns: 0.95fr 1.05fr;
    align-items: center;
    gap: 35px;
}
h1 {
    font-size: clamp(42px, 5.25vw, 76px);
    line-height: 1.08;
    margin: 27px 0;
    text-shadow: 3px 3px 0 var(--shadow);
}
h1 em { font-style: normal; }
.hero-copy p { font-size: 18px; max-width: 460px; margin: 25px 0; }
.actions { display: flex; align-items: center; gap: 22px; flex-wrap: wrap; }
.button {
    display: inline-flex;
    align-items: center;
    gap: 20px;
    font-family: var(--deck);
    font-size: 18px;
    text-transform: uppercase;
    padding: 15px 19px;
    border: 2px solid var(--ink);
    box-shadow: 5px 5px 0 var(--shadow);
}
.primary { background: var(--ink); color: var(--bg); }
.primary:hover { background: #d3d8ff; }
.text-link {
    display: inline-block;
    font-family: var(--deck);
    font-size: 15px;
    text-transform: uppercase;
    border-bottom: 1px solid #bfc8ff;
    padding-bottom: 7px;
}
.text-link:hover { border-bottom-color: var(--ink); }
.micro { font-size: 12px; margin-top: 24px; }
.micro span { padding-inline: 5px; }

.hero-photo {
    margin: 0;
    position: relative;
    align-self: stretch;
    min-height: 440px;
    border: 4px double var(--ink);
    box-shadow: 8px 8px 0 var(--shadow);
    background: #000;
}
.hero-photo > img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.hero-photo::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(0deg, #000b, transparent 25%, transparent 80%, #0007);
    pointer-events: none;
}
.photo-label, .hero-photo figcaption {
    position: absolute;
    z-index: 1;
    font-family: var(--deck);
    font-size: 12px;
    color: var(--ink);
    margin: 0;
}
.photo-label {
    top: 12px;
    left: 12px;
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--bg);
    padding: 9px;
}
.hero-photo figcaption { bottom: 17px; left: 15px; }

/* --- The strip of words. */
.signal-strip {
    list-style: none;
    margin: 0;
    padding: 17px 35px;
    display: flex;
    justify-content: space-around;
    flex-wrap: wrap;
    gap: 12px 24px;
    background: var(--ink);
    color: var(--bg);
    font-family: var(--deck);
    font-size: 15px;
}
.signal-strip li::before {
    content: "";
    display: inline-block;
    width: 6px;
    height: 6px;
    background: currentColor;
    margin-right: 12px;
    vertical-align: 2px;
}

/* --- Sections. */
.intro-section, .hardware-section, .faq-section { padding-block: 64px; }
.section-intro {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 35px;
    margin-bottom: 35px;
}
h2 {
    font-size: clamp(30px, 3.2vw, 46px);
    line-height: 1.15;
    text-transform: uppercase;
}
h3 { font-size: 23px; line-height: 1.2; text-transform: uppercase; }
.section-intro > p { max-width: 390px; margin: 0 0 3px; }

/* The experience: the screen and the three points. */
.experience-grid {
    display: grid;
    grid-template-columns: 1.05fr 1fr;
    gap: 44px;
    align-items: center;
}
.screen-demo {
    margin: 0;
    padding: 13px;
    background: var(--bg);
    border: 4px double var(--ink);
    box-shadow: 7px 7px 0 var(--shadow);
}
.deck-label, .deck-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    font-family: var(--deck);
    font-size: 12px;
    color: var(--ink);
    margin: 0;
}
.deck-label { border-bottom: 2px solid var(--ink); padding-bottom: 11px; margin-bottom: 10px; }
.deck-footer { padding-top: 12px; }
.deck-footer .pixel-icon { width: 12px; height: 12px; }
.screen-demo img, .theme-monitor img {
    width: 100%;
    height: auto;
    aspect-ratio: 4 / 3;
    object-fit: contain;
    background: #000;
    /* The recordings are the app's own 320×240 and 640×480 frames: shown
       larger, their pixels stay pixels. */
    image-rendering: pixelated;
}
.feature-list article {
    display: flex;
    gap: 22px;
    padding-block: 23px;
    border-bottom: 1px dashed var(--line);
}
.feature-list article:first-child { padding-top: 0; }
.feature-list article:last-child { border: 0; padding-bottom: 0; }
.feature-num { font-family: var(--deck); font-size: 17px; margin-top: 3px; }
.feature-list p { margin: 12px 0; }
.tags { font-size: 12px; }

/* The themes. */
.themes-section {
    background: var(--surface);
    border-block: 3px double var(--ink);
    padding-block: 64px;
}
.theme-workbench {
    display: grid;
    grid-template-columns: 0.72fr 1fr;
    gap: 50px;
    align-items: center;
}
.small-title { margin-bottom: 19px; }
.theme-buttons {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 9px;
    margin-bottom: 30px;
}
.theme-buttons button {
    display: flex;
    align-items: center;
    gap: 12px;
    text-align: left;
    background: transparent;
    border: 1px solid #c1c7ff;
    padding: 13px 10px;
    font-family: var(--deck);
    font-size: 15px;
    text-transform: uppercase;
}
/* The theme's two colours: its letters on its ground. */
.theme-buttons button::before {
    content: "";
    width: 14px;
    height: 10px;
    flex-shrink: 0;
    background: var(--swatch-paper, var(--bg));
    border: 2px solid var(--swatch-ink, var(--ink));
    box-sizing: border-box;
}
.theme-buttons button[aria-pressed="true"] {
    background: var(--ink);
    border-color: var(--ink);
    color: var(--bg);
    box-shadow: 3px 3px 0 var(--shadow-deep);
}
.theme-buttons button:hover { background: var(--ink); color: var(--bg); }
.theme-monitor {
    margin: 0;
    border: 4px double var(--ink);
    background: var(--bg);
    padding: 12px;
    box-shadow: 7px 7px 0 var(--shadow-deep);
}
.monitor-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding-bottom: 13px;
    font-family: var(--deck);
    font-size: 12px;
}
.monitor-top .led { width: 6px; height: 6px; margin-right: 5px; }
.monitor-top button {
    display: flex;
    align-items: center;
    gap: 8px;
    background: none;
    border: 0;
    padding: 4px 0;
    font-family: var(--deck);
    font-size: 12px;
    text-transform: uppercase;
}
.monitor-top button .pixel-icon { width: 12px; height: 12px; }
.theme-monitor figcaption {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 10px;
    padding-top: 13px;
    font-family: var(--deck);
}
.theme-monitor figcaption span:first-child { font-size: 18px; text-transform: uppercase; }
.theme-monitor figcaption span:last-child { font-size: 12px; }

/* The hardware. */
.hardware-tabs { display: flex; border-bottom: 2px solid var(--ink); }
.hardware-tabs button {
    flex: 1;
    text-align: left;
    background: none;
    border: 1px solid var(--ink);
    border-bottom: 0;
    padding: 16px;
    font-family: var(--deck);
    font-size: 16px;
    text-transform: uppercase;
}
.hardware-tabs button[aria-selected="true"] { background: var(--ink); color: var(--bg); }
.hardware-panel {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    padding: 34px;
    background: var(--bg);
    border: 2px solid var(--ink);
    border-top: 0;
    box-shadow: 7px 7px 0 var(--shadow);
}
.mini-label { font-size: 12px; }
.hardware-panel h3 { font-size: 30px; margin: 19px 0 15px; }
.hardware-panel p { max-width: 380px; margin-bottom: 24px; }
dl { margin: 0; }
dl > div { padding: 15px 0; border-bottom: 1px dashed var(--line); }
dl > div:first-child { padding-top: 0; }
dt {
    font-family: var(--deck);
    font-size: 12px;
    color: #c2cbff;
    text-transform: uppercase;
    margin-bottom: 9px;
}
dd { margin: 0; font-size: 16px; line-height: 1.5; }
.hardware-note { font-size: 13px; margin-top: 22px; }

/* The three steps. */
.setup-section {
    background: var(--surface);
    border-block: 3px double var(--ink);
    padding-block: 64px;
}
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
.steps article {
    display: flex;
    flex-direction: column;
    padding: 23px;
    background: var(--bg);
    border: 2px solid var(--ink);
    box-shadow: 5px 5px 0 var(--shadow-deep);
}
.step-number { font-family: var(--deck); font-size: 22px; margin-bottom: 23px; }
.steps h3 { font-size: 25px; }
.steps p { margin: 15px 0 25px; }
.steps a {
    display: flex;
    justify-content: space-between;
    gap: 10px;
    margin-top: auto;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--ink);
    font-family: var(--deck);
    font-size: 15px;
    text-transform: uppercase;
}
.steps a:hover { text-decoration: underline; }
.setup-note { display: flex; align-items: center; gap: 12px; margin-top: 39px; }
.setup-note p { font-size: 14px; margin: 0; }
.setup-note a { text-decoration: underline; }

/* The questions. */
.faq-section { display: grid; grid-template-columns: 0.8fr 1.2fr; gap: 55px; }
.faq details { border-bottom: 1px solid var(--ink); }
.faq summary {
    display: flex;
    justify-content: space-between;
    gap: 20px;
    padding: 20px 0;
    list-style: none;
    cursor: pointer;
    font-family: var(--deck);
    font-size: 17px;
    line-height: 1.4;
    text-transform: uppercase;
}
.faq summary::-webkit-details-marker { display: none; }
.faq-sign { position: relative; flex-shrink: 0; }
.faq details[open] .faq-sign svg { visibility: hidden; }
.faq details[open] .faq-sign::after {
    content: "";
    position: absolute;
    left: 0;
    top: 7px;
    width: 16px;
    height: 2px;
    background: currentColor;
}
.faq p { margin: 0 25px 24px 0; }
.faq p a { text-decoration: underline; }

/* The closing. */
.closing {
    position: relative;
    overflow: hidden;
    padding: 40px;
    background: var(--bg);
    border: 4px double var(--ink);
    box-shadow: 8px 8px 0 var(--shadow);
}
.closing h2 { font-size: clamp(36px, 4.5vw, 60px); margin: 23px 0 30px; }
.color-bars {
    position: absolute;
    right: 40px;
    bottom: 40px;
    width: 170px;
    height: 110px;
    display: flex;
    border: 2px solid var(--ink);
}
.color-bars i { flex: 1; background: #fff; }
.color-bars i:nth-child(2) { background: #ffff00; }
.color-bars i:nth-child(3) { background: #00ffff; }
.color-bars i:nth-child(4) { background: #00ff00; }
.color-bars i:nth-child(5) { background: #ff00ff; }
.color-bars i:nth-child(6) { background: #ff0000; }

/* The foot. */
.footer {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 30px;
    padding-top: 45px;
    padding-bottom: 30px;
}
.footer p { font-size: 13px; line-height: 1.7; }
.footer-links {
    display: flex;
    flex-wrap: wrap;
    gap: 8px 22px;
    align-items: flex-start;
    padding-top: 8px;
    font-family: var(--deck);
    font-size: 14px;
    text-transform: uppercase;
}
.footer-links a { padding: 4px 6px; }
.footer .legal {
    flex-basis: 100%;
    margin: 0;
    padding-top: 22px;
    border-top: 1px solid var(--line);
    font-size: 12px;
}

/* --- Narrower screens. */
@media (max-width: 1050px) {
    .header { padding-inline: 24px; }
    .header nav { font-size: 14px; gap: 8px 16px; }
    .wrap { width: calc(100% - 48px); }
    .hero { gap: 25px; }
    .hero-photo { min-height: 410px; }
    h1 { font-size: clamp(40px, 5.3vw, 60px); }
    .hero-copy p { font-size: 16px; }
    .signal-strip { font-size: 13px; }
    .theme-workbench { gap: 30px; }
    .theme-buttons button { font-size: 13px; }
    .hardware-panel { gap: 30px; }
    .steps { gap: 18px; }
    .steps article { padding: 18px; }
    .steps h3 { font-size: 23px; }
    .color-bars { width: 110px; height: 80px; }
}

@media (max-width: 720px) {
    html { scroll-padding-top: 20px; }
    .header { padding: 12px 16px; gap: 10px 16px; }
    .wordmark img { width: 143px; height: 49px; }
    .header nav { order: 3; flex-basis: 100%; font-size: 13px; }
    .nav-setup { font-size: 13px; padding: 10px; box-shadow: 3px 3px 0 var(--shadow); }
    .wrap { width: calc(100% - 32px); }
    .hero { padding-block: 33px; gap: 30px; grid-template-columns: 1fr; }
    .eyebrow { font-size: 12px; }
    h1 { font-size: clamp(36px, 9.6vw, 60px); line-height: 1.1; margin-block: 24px; }
    .hero-copy p { font-size: 17px; max-width: 450px; }
    .button { font-size: 16px; padding: 14px; gap: 14px; }
    .text-link { font-size: 13px; }
    .actions { gap: 20px; }
    .hero-photo { min-height: 290px; aspect-ratio: 1.2; box-shadow: 5px 5px 0 var(--shadow); }
    .signal-strip { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; padding: 19px 18px; font-size: 12px; }
    .signal-strip li::before { margin-right: 8px; }
    .intro-section, .hardware-section, .faq-section, .themes-section, .setup-section { padding-block: 42px; }
    .section-label { font-size: 13px; margin-bottom: 22px; }
    .section-intro { display: block; margin-bottom: 28px; }
    .section-intro > p { margin-top: 20px; max-width: 440px; }
    h2 { font-size: 30px; line-height: 1.2; }
    .experience-grid, .theme-workbench, .hardware-panel, .faq-section { grid-template-columns: 1fr; }
    .experience-grid { gap: 30px; }
    .feature-list article { gap: 16px; }
    .feature-list h3 { font-size: 22px; }
    .theme-buttons { grid-template-columns: repeat(2, 1fr); gap: 7px; margin-bottom: 20px; }
    .theme-buttons button { font-size: 12px; padding: 12px 8px; gap: 8px; }
    .theme-monitor { padding: 9px; }
    .hardware-tabs button { font-size: 12px; padding: 12px 6px; line-height: 1.5; }
    .hardware-panel { padding: 25px 19px; gap: 24px; }
    .hardware-panel h3 { font-size: 26px; }
    .steps { grid-template-columns: 1fr; gap: 22px; }
    .steps article { padding: 22px; }
    .step-number { margin-bottom: 18px; }
    .setup-note { align-items: flex-start; }
    .setup-note .led { margin-top: 6px; }
    .faq-section { gap: 20px; }
    .faq summary { font-size: 15px; }
    .closing { padding: 28px 20px 100px; }
    .closing h2 { font-size: 32px; }
    .closing .eyebrow { font-size: 12px; }
    .color-bars { right: 25px; bottom: 23px; width: 100px; height: 40px; }
    .footer { padding-top: 35px; gap: 20px; }
    .footer-links { gap: 6px 14px; font-size: 13px; }
}

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
}