/* Robot Chess. Same fonts and colours as andresledezma.dev. */

@font-face { font-family: "Archivo"; src: url("/fonts/archivo.woff2") format("woff2"); font-weight: 100 900; font-stretch: 62% 125%; font-display: swap; }
@font-face { font-family: "IBM Plex Sans"; src: url("/fonts/ibm-plex-sans-latin-400-normal.woff2") format("woff2"); font-weight: 400; font-display: swap; }
@font-face { font-family: "IBM Plex Sans"; src: url("/fonts/ibm-plex-sans-latin-400-italic.woff2") format("woff2"); font-weight: 400; font-style: italic; font-display: swap; }
@font-face { font-family: "IBM Plex Sans"; src: url("/fonts/ibm-plex-sans-latin-600-normal.woff2") format("woff2"); font-weight: 600; font-display: swap; }
@font-face { font-family: "IBM Plex Mono"; src: url("/fonts/ibm-plex-mono-latin-400-normal.woff2") format("woff2"); font-weight: 400; font-display: swap; }
@font-face { font-family: "IBM Plex Mono"; src: url("/fonts/ibm-plex-mono-latin-500-normal.woff2") format("woff2"); font-weight: 500; font-display: swap; }

:root {
  --bg: #f6f7f9;
  --surface: #ffffff;
  --ink: #1b2430;
  --muted: #5a6572;
  --line: #e0e4e9;
  --accent: #1f4e9b;
  --accent-ink: #ffffff;
  --accent-soft: #e9eff8;
  --ok: #1d7f53;
  --ok-soft: #e6f4ec;
  --nok: #b3392b;
  --nok-soft: #fbeceb;
  --warn-soft: #fbf3e6;
  --band: #1d2836;
  --band-ink: #f3f5f8;
  --band-muted: #b4bfcb;
  --orange: #d38b3d;
  --code-bg: #f9fafb;
  --sans: "IBM Plex Sans", "Helvetica Neue", Arial, sans-serif;
  --display: "Archivo", "Helvetica Neue", Arial, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  --code-line: 20px;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0f141a; --surface: #161d25; --ink: #e5e9ee; --muted: #9aa5b1; --line: #26303b;
    --accent: #8fb4ec; --accent-ink: #0f141a; --accent-soft: #1a2636; --ok: #4cc38a; --ok-soft: #12261d; --nok: #f07a6a; --nok-soft: #2a1715;
    --warn-soft: #2a2114; --band: #172230; --band-ink: #eef1f5; --band-muted: #a7b3c0; --orange: #dc9a52; --code-bg: #111820; color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #0f141a; --surface: #161d25; --ink: #e5e9ee; --muted: #9aa5b1; --line: #26303b;
  --accent: #8fb4ec; --accent-ink: #0f141a; --accent-soft: #1a2636; --ok: #4cc38a; --ok-soft: #12261d; --nok: #f07a6a; --nok-soft: #2a1715;
  --warn-soft: #2a2114; --band: #172230; --band-ink: #eef1f5; --band-muted: #a7b3c0; --orange: #dc9a52; --code-bg: #111820; color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }
html, body { height: 100%; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 400 15px/1.55 var(--sans); display: flex; flex-direction: column; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
h1, h3 { margin: 0; }
p { margin: 0; }
code, pre { font-family: var(--mono); font-size: 13px; }
[hidden] { display: none !important; }

/* Header */
.top { display: flex; align-items: center; gap: 16px; padding: 10px max(16px, env(safe-area-inset-left)); background: var(--band); color: var(--band-ink); border-bottom: 3px solid var(--orange); }
.top h1 { font: 700 1.25rem/1 var(--display); font-stretch: 110%; letter-spacing: 0.01em; }
.top .back { color: var(--band-muted); font-size: 0.9rem; }
.top .back:hover { color: var(--band-ink); }
.built-with { margin-left: auto; display: inline-flex; align-items: center; gap: 8px; padding: 5px 12px 5px 8px; border: 1px solid rgba(255, 255, 255, 0.22); border-radius: 999px; font-size: 0.82rem; color: var(--band-ink); white-space: nowrap; }
.built-with b { font-weight: 600; }
a.built-with:hover { text-decoration: none; border-color: rgba(255, 255, 255, 0.5); }

/* Layout */
.app { flex: 1; min-height: 0; display: grid; grid-template-columns: minmax(0, 1fr) 470px; }
.stage { position: relative; min-height: 0; background: #07090c; }
#view { display: block; width: 100%; height: 100%; touch-action: none; }
.panel { display: flex; flex-direction: column; min-height: 0; overflow: auto; background: var(--surface); border-left: 1px solid var(--line); }
@media (max-width: 900px) {
  body { height: auto; display: block; }
  .app { display: block; }
  .stage { height: 58vh; min-height: 320px; }
  .panel { border-left: 0; border-top: 1px solid var(--line); overflow: visible; }
  .top .back { display: none; }
}
@media (max-width: 480px) {
  .built-with span { display: none; }
  .built-with { padding: 5px; }
}

/* Overlays on the 3D view */
.views { position: absolute; top: 10px; left: 10px; display: flex; gap: 4px; flex-wrap: wrap; }
.views button { background: rgba(20, 26, 34, 0.78); color: #dfe5ec; border: 1px solid rgba(255, 255, 255, 0.14); }
.views button.on { background: #1f4e9b; color: #fff; border-color: #1f4e9b; }
.readout { position: absolute; left: 10px; bottom: 10px; white-space: pre; padding: 4px 10px; border-radius: 6px; background: rgba(29, 40, 54, 0.82); color: #f3f5f8; font: 500 12.5px/1.4 var(--mono); pointer-events: none; }
.readout:empty { display: none; }
.drag-tip { position: absolute; right: 10px; bottom: 10px; max-width: 280px; padding: 6px 10px; border-radius: 6px; background: rgba(20, 26, 34, 0.82); color: #dfe5ec; font-size: 12.5px; pointer-events: none; }
.loading { position: absolute; inset: 0; display: grid; place-items: center; color: #c9d1db; font-size: 1rem; background: #07090c; }

/* Buttons */
button, select { font: 500 13.5px/1 var(--sans); color: var(--ink); background: var(--surface); border: 1px solid var(--line); border-radius: 6px; padding: 8px 12px; cursor: pointer; min-height: 34px; }
button:hover:not(:disabled), select:hover { border-color: var(--muted); }
button:disabled { opacity: 0.45; cursor: default; }
button.primary { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); font-weight: 600; }
button.small { padding: 6px 10px; min-height: 30px; font-size: 12.5px; }
.seg { display: inline-flex; border: 1px solid var(--line); border-radius: 6px; overflow: hidden; }
.seg button { border: 0; border-radius: 0; border-right: 1px solid var(--line); }
.seg button:last-child { border-right: 0; }
.seg button.on { background: var(--accent); color: var(--accent-ink); }

/* Status */
.status { padding: 14px 16px; border-bottom: 1px solid var(--line); display: grid; gap: 8px; }
.turn { font: 600 1.02rem/1.3 var(--sans); display: flex; align-items: center; gap: 8px; }
.turn::before { content: ""; width: 10px; height: 10px; border-radius: 50%; background: var(--muted); flex: none; }
.turn.you::before { background: #2f9e5b; }
.turn.cpu::before { background: var(--orange); }
.hint { padding: 8px 10px; border-radius: 6px; background: var(--ok-soft); border-left: 3px solid #2f9e5b; font-size: 14px; }
.hint b { font-weight: 600; }
.message { padding: 8px 10px; border-radius: 6px; font-size: 14px; background: var(--accent-soft); }
.message.bad { background: var(--nok-soft); }
.message.warn { background: var(--warn-soft); }
.message.good { background: var(--ok-soft); }
.message ul { margin: 4px 0 0; padding-left: 18px; }

/* Tabs */
.tabs { display: flex; border-bottom: 1px solid var(--line); padding: 0 8px; position: sticky; top: 0; background: var(--surface); z-index: 1; }
.tabs button { border: 0; border-radius: 0; background: none; padding: 12px 12px 10px; border-bottom: 2px solid transparent; color: var(--muted); font-weight: 600; }
.tabs button[aria-selected="true"] { color: var(--ink); border-bottom-color: var(--accent); }
.tab { padding: 14px 16px 24px; display: grid; gap: 10px; align-content: start; }
.sub { font-size: 12px; text-transform: uppercase; letter-spacing: 0.06em; color: var(--muted); font-weight: 600; margin-top: 6px; }
.note { font-size: 13px; color: var(--muted); }
.row { display: flex; align-items: center; gap: 10px; }
.row.wrap { flex-wrap: wrap; gap: 6px; }
.label { font-size: 13px; color: var(--muted); min-width: 84px; }

/* Program tab */
.toolbar { display: flex; gap: 6px; flex-wrap: wrap; }
.toolbar select { margin-left: auto; max-width: 170px; }
.editor { display: flex; border: 1px solid var(--line); border-radius: 8px; background: var(--code-bg); overflow: hidden; height: 360px; }
.gutter { margin: 0; padding: 10px 8px 10px 10px; min-width: 38px; text-align: right; color: var(--muted); font-size: 12.5px; line-height: var(--code-line); user-select: none; overflow: hidden; border-right: 1px solid var(--line); opacity: 0.8; }
.code { position: relative; flex: 1; min-width: 0; }
.code textarea { position: absolute; inset: 0; width: 100%; height: 100%; resize: none; border: 0; outline: 0; margin: 0; padding: 10px 12px; background: transparent; color: var(--ink); font: 400 13px/var(--code-line) var(--mono); white-space: pre; overflow: auto; tab-size: 2; }
.line-mark { position: absolute; left: 0; right: 0; top: 10px; height: var(--code-line); pointer-events: none; }
.line-mark.run { background: rgba(47, 158, 91, 0.2); border-left: 3px solid #2f9e5b; }
.line-mark.err { background: rgba(179, 57, 43, 0.16); border-left: 3px solid var(--nok); }
.syntax { font-size: 13px; color: var(--nok); }
.log { margin: 0; padding: 0; list-style: none; max-height: 190px; overflow: auto; border: 1px solid var(--line); border-radius: 8px; font: 400 12.5px/1.45 var(--mono); }
.log:empty::before { content: "Run a program to see what the robot does."; display: block; padding: 8px 10px; color: var(--muted); font-family: var(--sans); }
.log li { padding: 3px 10px; border-bottom: 1px solid var(--line); white-space: pre-wrap; }
.log li:last-child { border-bottom: 0; }
.log li.bad { color: var(--nok); background: var(--nok-soft); }
.log li.warn { background: var(--warn-soft); }
.log li.good { color: var(--ok); }
.log li.info { color: var(--muted); }
.cpu summary { cursor: pointer; font-size: 13.5px; font-weight: 600; }
.cpu pre { margin: 8px 0 0; padding: 10px 12px; border: 1px solid var(--line); border-radius: 8px; background: var(--code-bg); max-height: 260px; overflow: auto; line-height: 1.5; }

/* Jog tab */
.pose { display: grid; grid-template-columns: repeat(4, 1fr); gap: 6px; }
.pose div { border: 1px solid var(--line); border-radius: 6px; padding: 6px 8px; display: grid; gap: 1px; }
.pose span { font-size: 11px; color: var(--muted); font-weight: 600; }
.pose b { font: 500 14px/1.2 var(--mono); }
.jog-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: 6px; }
.jog-grid button { padding: 8px 4px; font-family: var(--mono); touch-action: manipulation; user-select: none; -webkit-user-select: none; }
@media (max-width: 380px) { .jog-grid { grid-template-columns: repeat(4, 1fr); } }
.points { list-style: none; margin: 0; padding: 0; display: grid; gap: 6px; }
.points li { display: flex; align-items: center; gap: 6px; border: 1px solid var(--line); border-radius: 6px; padding: 6px 8px; font: 400 12.5px/1.3 var(--mono); }
.points li b { min-width: 30px; }
.points li span { flex: 1; color: var(--muted); }

/* Game tab */
.moves { margin: 0; padding-left: 28px; font: 400 13px/1.7 var(--mono); columns: 2; }
.moves:empty::before { content: "No moves yet."; color: var(--muted); font-family: var(--sans); }

/* Guide */
.guide { font-size: 14.5px; }
.guide details { border: 1px solid var(--line); border-radius: 8px; padding: 0 12px; }
.guide details[open] { padding-bottom: 12px; }
.guide summary { cursor: pointer; font-weight: 600; padding: 10px 0; }
.guide details > * + * { margin-top: 8px; }
.guide ul, .guide ol { padding-left: 20px; margin-bottom: 0; }
.guide li + li { margin-top: 4px; }
.guide pre { padding: 10px 12px; background: var(--code-bg); border: 1px solid var(--line); border-radius: 6px; overflow: auto; line-height: 1.5; }
.guide code { background: var(--code-bg); border: 1px solid var(--line); border-radius: 4px; padding: 0 4px; }
.ref { border-collapse: collapse; width: 100%; font-size: 13.5px; }
.ref td { border-top: 1px solid var(--line); padding: 6px 4px; vertical-align: top; }
.ref td:first-child { white-space: nowrap; padding-right: 12px; }