/* Screenshare Doctor project page: a broadcast test card and a signal path.
   SPDX-License-Identifier: MIT */

@font-face {
    font-family: "Red Hat Display";
    src: url("assets/fonts/red-hat-display.woff2") format("woff2");
    font-weight: 300 900;
    font-display: swap;
}
@font-face {
    font-family: "Red Hat Text";
    src: url("assets/fonts/red-hat-text.woff2") format("woff2");
    font-weight: 300 700;
    font-display: swap;
}
@font-face {
    font-family: "Red Hat Mono";
    src: url("assets/fonts/red-hat-mono.woff2") format("woff2");
    font-weight: 300 700;
    font-display: swap;
}

:root {
    --ink: #1b1d24;
    --ink-soft: #4c5260;
    --paper: #f5f6f8;
    --white: #ffffff;
    --rule: #d6d9df;
    --link: #006b7d;
    --pass: #1e7b46;
    --fail: #c4262e;
    --warn: #9a6200;
    --muted: #6a7080;

    /* SMPTE colour bars at 75 % */
    --bar-grey: #c0c0c0;
    --bar-yellow: #c0c000;
    --bar-cyan: #00c0c0;
    --bar-green: #00c000;
    --bar-magenta: #c000c0;
    --bar-red: #c00000;
    --bar-blue: #0000c0;

    --display: "Red Hat Display", "Cantarell", system-ui, sans-serif;
    --text: "Red Hat Text", "Cantarell", system-ui, sans-serif;
    --mono: "Red Hat Mono", ui-monospace, monospace;

    --step--1: 0.875rem;
    --step-0: 1.0625rem;
    --step-1: 1.3rem;
    --step-2: clamp(1.6rem, 1.3rem + 1.2vw, 2.15rem);
    --step-3: clamp(2.2rem, 1.4rem + 3.4vw, 3.9rem);

    --gutter: clamp(1rem, 4vw, 2.5rem);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 4.5rem; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
    margin: 0;
    background: var(--paper);
    color: var(--ink);
    font-family: var(--text);
    font-size: var(--step-0);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

a { color: var(--link); text-underline-offset: 0.18em; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 3px solid var(--bar-cyan); outline-offset: 2px; border-radius: 3px; }

code, pre { font-family: var(--mono); font-size: 0.88em; }
p code, li code, td code, figcaption code {
    background: #e6e8ec;
    padding: 0.08em 0.35em;
    border-radius: 4px;
    overflow-wrap: anywhere;
}

h1, h2, h3 { font-family: var(--display); margin: 0; text-wrap: balance; }
h2 { font-size: var(--step-2); font-weight: 800; line-height: 1.12; letter-spacing: -0.01em; margin-bottom: 0.75rem; }
p { margin: 0 0 1rem; max-width: 66ch; }

.wrap { width: min(1180px, 100% - 2 * var(--gutter)); margin-inline: auto; }
.section-lede { color: var(--ink-soft); max-width: 62ch; }
.fine { font-size: var(--step--1); color: var(--ink-soft); }

main > section { padding-block: clamp(3rem, 7vw, 5.5rem); }

/* ---------- top bar ---------- */

.topbar { position: sticky; top: 0; z-index: 10; background: var(--ink); color: var(--white); }
.topbar-row { display: flex; align-items: center; gap: 1rem 2rem; min-height: 3.5rem; }
.brand {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    color: inherit;
    text-decoration: none;
    font-family: var(--display);
    font-weight: 800;
    font-size: var(--step-1);
}
.brand-mark { width: 1.6rem; height: 1.6rem; }
.topbar nav { margin-left: auto; display: flex; gap: 1.25rem; }
.topbar nav a { color: var(--white); text-decoration: none; font-size: var(--step--1); font-weight: 600; }
.topbar nav a:hover { text-decoration: underline; }
@media (max-width: 640px) { .topbar nav a:not(:last-child) { display: none; } }

/* ---------- hero: headline beside the test card ---------- */

.hero { background: var(--white); border-bottom: 1px solid var(--rule); }
.hero-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
    gap: clamp(2rem, 5vw, 4.5rem);
    align-items: center;
}
@media (max-width: 900px) { .hero-grid { grid-template-columns: minmax(0, 1fr); } }

h1 {
    font-size: var(--step-3);
    font-weight: 850;
    line-height: 1.02;
    letter-spacing: -0.025em;
    margin-bottom: 1.4rem;
}
.lede { font-size: var(--step-1); line-height: 1.5; color: var(--ink-soft); max-width: 36ch; }
@media (max-width: 900px) { .lede { max-width: 50ch; } }

.command {
    display: flex;
    margin: 1.75rem 0 0.6rem;
    border-radius: 8px;
    overflow: hidden;
    background: var(--ink);
    max-width: 40rem;
}
.command code {
    flex: 1;
    min-width: 0;
    padding: 0.85rem 1rem;
    color: #e9ebef;
    font-size: var(--step--1);
    white-space: nowrap;
    overflow-x: auto;
}
.copy {
    border: 0;
    background: var(--bar-cyan);
    color: var(--ink);
    font: 700 var(--step--1) var(--text);
    padding: 0 1.1rem;
    cursor: pointer;
}
.copy:hover { background: #33d6d6; }
.copy[data-state="done"] { background: var(--bar-green); }
.first-run {
    margin: 0;
    padding: 0.7rem 1rem;
    border-left: 3px solid var(--bar-cyan);
    background: var(--paper);
    font-size: var(--step--1);
    overflow-x: auto;
    max-width: 40rem;
}

.card { margin: 0; }
.bars {
    position: relative;
    aspect-ratio: 16 / 10;
    display: grid;
    grid-template-rows: 67fr 8fr 25fr;
    border-radius: 14px;
    overflow: hidden;
    box-shadow: 0 0 0 10px var(--ink), 0 24px 40px -18px rgba(27, 29, 36, 0.6);
    margin: 10px;
}
.bars > div { display: grid; }
.bars i { display: block; }
.bars-top, .bars-mid { grid-template-columns: repeat(7, 1fr); }
.bars-top i:nth-child(1) { background: var(--bar-grey); }
.bars-top i:nth-child(2) { background: var(--bar-yellow); }
.bars-top i:nth-child(3) { background: var(--bar-cyan); }
.bars-top i:nth-child(4) { background: var(--bar-green); }
.bars-top i:nth-child(5) { background: var(--bar-magenta); }
.bars-top i:nth-child(6) { background: var(--bar-red); }
.bars-top i:nth-child(7) { background: var(--bar-blue); }
.bars-mid i:nth-child(1) { background: var(--bar-blue); }
.bars-mid i:nth-child(2n) { background: #131313; }
.bars-mid i:nth-child(3) { background: var(--bar-magenta); }
.bars-mid i:nth-child(5) { background: var(--bar-cyan); }
.bars-mid i:nth-child(7) { background: var(--bar-grey); }
.bars-low { grid-template-columns: 5fr 5fr 5fr 5fr 1.33fr 1.33fr 1.34fr 4fr; }
.bars-low i:nth-child(1) { background: #00214c; }
.bars-low i:nth-child(2) { background: #ffffff; }
.bars-low i:nth-child(3) { background: #32006a; }
.bars-low i:nth-child(4) { background: #131313; }
.bars-low i:nth-child(5) { background: #090909; }
.bars-low i:nth-child(6) { background: #131313; }
.bars-low i:nth-child(7) { background: #1d1d1d; }
.bars-low i:nth-child(8) { background: #131313; }
.ident {
    position: absolute;
    left: 50%;
    top: 33.5%;
    transform: translate(-50%, -50%);
    margin: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.1rem;
    padding: 0.7rem 1.4rem;
    background: rgba(19, 19, 19, 0.92);
    color: var(--white);
    border-radius: 6px;
    font-family: var(--mono);
    font-weight: 600;
    font-size: clamp(0.8rem, 0.6rem + 0.8vw, 1.15rem);
    white-space: nowrap;
}
.ident-state { color: #ff6b6b; font-weight: 500; font-size: 0.85em; }
.ident-state::before {
    content: "";
    display: inline-block;
    width: 0.55em;
    height: 0.55em;
    margin-right: 0.45em;
    border-radius: 50%;
    background: currentColor;
    vertical-align: 0.05em;
}
.card figcaption { margin: 1.4rem 10px 0; font-size: var(--step--1); color: var(--ink-soft); }

/* ---------- the signal path ---------- */

.controls { display: grid; grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr); gap: 1.25rem 2rem; margin: 2rem 0 1.5rem; }
@media (max-width: 900px) { .controls { grid-template-columns: minmax(0, 1fr); } }
.choice { border: 0; margin: 0; padding: 0; min-width: 0; }
.choice legend { font-family: var(--display); font-weight: 700; margin-bottom: 0.6rem; padding: 0; }
.choice-row { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.chip { position: relative; }
.chip input { position: absolute; opacity: 0; inset: 0; margin: 0; cursor: pointer; }
.chip span {
    display: inline-block;
    padding: 0.45rem 0.9rem;
    border: 1.5px solid var(--ink);
    border-radius: 999px;
    background: var(--white);
    font-size: var(--step--1);
    font-weight: 600;
    cursor: pointer;
    transition: background-color 150ms ease, color 150ms ease;
}
.chip input:checked + span { background: var(--ink); color: var(--white); }
.chip input:focus-visible + span { outline: 3px solid var(--bar-cyan); outline-offset: 2px; }
.chip:hover span { background: #e9ebef; }
.chip:hover input:checked + span { background: #2c2f39; }
@media (prefers-reduced-motion: reduce) { .chip span { transition: none; } }

.path-panel {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    background: var(--white);
    border: 1px solid var(--rule);
    border-radius: 14px;
    overflow: hidden;
}
.path {
    list-style: none;
    margin: 0;
    padding: 1.75rem 1.5rem 1.5rem;
    display: grid;
    grid-template-columns: repeat(7, minmax(0, 1fr));
    gap: 0.6rem;
    counter-reset: none;
    background: var(--ink);
    position: relative;
}
.path::before {
    content: "";
    position: absolute;
    left: 2.5rem;
    right: 2.5rem;
    top: 2.95rem;
    height: 3px;
    background: repeating-linear-gradient(to right, #5b6170 0 10px, transparent 10px 16px);
}
.path li {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 0.2rem;
    color: #c9ccd4;
    font-size: 0.8rem;
    line-height: 1.35;
}
.path li::before {
    content: "";
    width: 2.4rem;
    height: 2.4rem;
    margin-bottom: 0.45rem;
    border-radius: 50%;
    border: 3px solid #5b6170;
    background: var(--ink);
    position: relative;
    z-index: 1;
}
.path li b { color: var(--white); font-family: var(--display); font-size: 0.95rem; }
.path li span { overflow-wrap: anywhere; }
.path li[data-order]::before {
    content: attr(data-order);
    display: grid;
    place-items: center;
    border-color: var(--bar-cyan);
    background: var(--bar-cyan);
    color: var(--ink);
    font: 700 1rem var(--mono);
}
.path li[data-order="1"]::before { border-color: var(--bar-yellow); background: var(--bar-yellow); }
.path li:not([data-order]) { opacity: 0.55; }

@media (max-width: 760px) {
    .path { grid-template-columns: minmax(0, 1fr); gap: 0.25rem; padding: 1.25rem; }
    .path::before { left: 2.35rem; right: auto; top: 1.6rem; bottom: 1.6rem; width: 3px; height: auto;
        background: repeating-linear-gradient(to bottom, #5b6170 0 10px, transparent 10px 16px); }
    .path li { flex-direction: row; text-align: left; align-items: center; gap: 0.75rem; }
    .path li::before { margin: 0; flex: none; }
    .path li b { min-width: 6.5rem; }
}

.readout { padding: 1.5rem 1.75rem 1.75rem; }
.readout-title { font-family: var(--display); font-weight: 800; font-size: var(--step-1); margin-bottom: 0.4rem; }
.readout-why { color: var(--ink-soft); }
.readout-label { font-weight: 700; font-size: var(--step--1); margin: 1.25rem 0 0.5rem; }
.checks { margin: 0; padding: 0; list-style: none; counter-reset: check; display: grid; gap: 0.1rem; }
.checks li {
    counter-increment: check;
    display: grid;
    grid-template-columns: 2rem 11.5rem minmax(0, 1fr);
    gap: 0.25rem 0.75rem;
    padding: 0.55rem 0;
    border-top: 1px solid var(--rule);
    font-size: var(--step--1);
}
.checks li::before { content: counter(check); font: 700 0.85rem var(--mono); color: var(--muted); padding-top: 0.1rem; }
.checks li:first-child::before { color: var(--ink); }
.checks code { font-weight: 600; background: none; padding: 0; }
.checks .what { font-weight: 600; }
.checks .note { display: block; font-weight: 400; color: var(--ink-soft); }
@media (max-width: 640px) {
    .checks li { grid-template-columns: 1.6rem minmax(0, 1fr); }
    .checks li > code { grid-column: 2; }
    .checks li > .what { grid-column: 2; }
}
.readout-command {
    margin: 1.25rem 0 0;
    padding: 0.75rem 1rem;
    background: var(--ink);
    color: #e9ebef;
    border-radius: 8px;
    font-size: 0.82rem;
    overflow-x: auto;
}

/* ---------- real output ---------- */

.output { background: var(--white); border-block: 1px solid var(--rule); }
.output-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.2fr); gap: clamp(2rem, 5vw, 4rem); align-items: start; }
@media (max-width: 960px) { .output-grid { grid-template-columns: minmax(0, 1fr); } }
.listing { margin: 1.5rem 0 0; padding: 1rem 1.1rem; background: var(--paper); border-radius: 8px; font-size: 0.8rem; overflow-x: auto; line-height: 1.75; }
.screen { margin: 0; border-radius: 12px; overflow: hidden; background: #0c0c0c; box-shadow: 0 0 0 1px var(--ink); }
.screen img { display: block; width: 100%; height: auto; }

/* ---------- promises ---------- */

.promise-list { list-style: none; margin: 1.5rem 0 0; padding: 0; display: grid; grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr)); gap: 1.5rem 2.5rem; }
.promise-list li { padding-top: 0.9rem; border-top: 4px solid var(--ink); }
.promise-list li:nth-child(1) { border-color: var(--bar-yellow); }
.promise-list li:nth-child(2) { border-color: var(--bar-cyan); }
.promise-list li:nth-child(3) { border-color: var(--bar-green); }
.promise-list li:nth-child(4) { border-color: var(--bar-magenta); }
.promise-list li:nth-child(5) { border-color: var(--bar-red); }
.promise-list b { display: block; font-family: var(--display); font-size: var(--step-1); margin-bottom: 0.25rem; }

/* ---------- GNOME extension ---------- */

.extension { background: var(--white); border-block: 1px solid var(--rule); }
.extension-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: clamp(2rem, 5vw, 4rem); align-items: center; }
@media (max-width: 900px) { .extension-grid { grid-template-columns: minmax(0, 1fr); } }
.menu-figure { margin: 0; padding: 0 0 1.5rem; background: linear-gradient(160deg, #3d4a6b, #2a2f45 60%, #3a2f4f); border-radius: 14px; overflow: hidden; }
.shell-bar {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.35rem 0.9rem;
    background: #0d0d0d;
    color: #f2f2f2;
    font: 600 0.8rem var(--text);
}
.shell-bar .clock { margin-inline: auto; }
.indicator {
    width: 1.5rem;
    height: 1.1rem;
    border-radius: 5px;
    background: rgba(255, 255, 255, 0.18);
    position: relative;
    box-shadow: inset 0 0 0 2px #f2f2f2;
}
.indicator::after {
    content: "";
    position: absolute;
    right: -3px;
    bottom: -3px;
    width: 0.55rem;
    height: 0.55rem;
    border-radius: 50%;
    background: #ff5a52;
    box-shadow: 0 0 0 2px #0d0d0d;
}
.menu {
    width: min(24rem, calc(100% - 2rem));
    margin: 0.5rem 1rem 0 auto;
    padding: 0.6rem 0;
    background: #2b2b2e;
    color: #f2f2f2;
    border-radius: 14px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.45);
    font-size: 0.85rem;
}
.menu p { margin: 0; padding: 0.4rem 1rem; max-width: none; }
.menu hr { border: 0; border-top: 1px solid rgba(255, 255, 255, 0.12); margin: 0.35rem 0.75rem; }
.menu-head { font-weight: 700; }
.menu-context { color: #b5b5bb; font-size: 0.78rem; padding-top: 0 !important; }
.menu-action { border-radius: 8px; margin: 0 0.4rem !important; padding-inline: 0.6rem !important; }
.menu-action:first-of-type { background: rgba(255, 255, 255, 0.08); }
.tag { display: inline-block; min-width: 2.6rem; padding: 0 0.3rem; margin-right: 0.35rem; border-radius: 4px; font: 700 0.68rem var(--mono); text-align: center; }
.tag-fail { background: #e01b24; color: #fff; }
.menu-figure figcaption { margin: 1rem 1rem 0; font-size: var(--step--1); color: #d9dbe3; }

/* ---------- tested ---------- */

.table-scroll { overflow-x: auto; margin: 1.5rem 0 1rem; border-radius: 12px; border: 1px solid var(--rule); background: var(--white); }
table { width: 100%; border-collapse: collapse; font-size: var(--step--1); }
th, td { text-align: left; padding: 0.75rem 1rem; border-bottom: 1px solid var(--rule); vertical-align: top; }
thead th { background: var(--ink); color: var(--white); font-family: var(--display); font-weight: 700; white-space: nowrap; }
tbody tr:last-child > * { border-bottom: 0; }
tbody th { font-family: var(--display); font-weight: 700; white-space: nowrap; }

/* ---------- footer ---------- */

.footer { background: var(--ink); color: #c9ccd4; font-size: var(--step--1); }
.footer-row { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 0.5rem 2rem; padding-block: 1.75rem; }
.footer p { margin: 0; }
.footer a { color: var(--bar-cyan); }
.footer-row::before {
    content: "";
    flex-basis: 100%;
    height: 6px;
    margin-bottom: 1rem;
    background: linear-gradient(to right,
        var(--bar-grey) 0 14.28%, var(--bar-yellow) 0 28.57%, var(--bar-cyan) 0 42.85%,
        var(--bar-green) 0 57.14%, var(--bar-magenta) 0 71.42%, var(--bar-red) 0 85.71%, var(--bar-blue) 0);
    border-radius: 3px;
}
.path li[data-layer="app"] { opacity: 1; }
.path li[data-layer="app"]::before { border-color: var(--white); background: var(--white); }