/* `hidden` must win over any display rule below (flex/grid boxes stayed visible as empty frames). */
[hidden] { display: none !important; }

/* Syntakt Firmware Workbench - plain CSS for every page. No build step, no external fonts.
   Dark first, with a light scheme through prefers-color-scheme.
   Accent: Syntakt red. Frames moved by an insert: amber. */

:root {
  color-scheme: dark light;

  --bg: #121314;
  --panel: #1b1d1f;
  --well: #15171a;
  --line: #2c2f33;
  --ink: #e9eaec;
  --ink-dim: #8d939b;

  --accent: #e5432d;          /* borders, strokes, focus rings */
  --accent-text: #ff7a63;     /* accent as text, contrast >= 7:1 on --bg */
  --accent-strong: #cf3a26;   /* filled buttons, white label */
  --accent-soft: rgba(229, 67, 45, 0.16);

  --moved: #d9a03a;
  --moved-text: #e8b95c;      /* amber as text, contrast >= 7:1 on --bg */
  --moved-soft: rgba(217, 160, 58, 0.14);

  --ok: #56d98a;
  --bad: #ff8a80;
  --warn-bg: #2a2109;
  --warn-line: #a87c1b;
  --warn-ink: #f5e2b6;

  --axis: #3a4048;
  --radius: 10px;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
}
@media (prefers-color-scheme: light) {
  :root {
    --bg: #f6f7f9;
    --panel: #ffffff;
    --well: #eef0f4;
    --line: #d3d7e0;
    --ink: #16181d;
    --ink-dim: #565c68;

    --accent: #cf3a26;
    --accent-text: #ad2d1b;
    --accent-strong: #cf3a26;
    --accent-soft: rgba(207, 58, 38, 0.10);

    --moved: #b07d18;
    --moved-text: #74520c;
    --moved-soft: rgba(176, 125, 24, 0.12);

    --ok: #15803d;
    --bad: #b91c1c;
    --warn-bg: #fff6e5;
    --warn-line: #e0a93a;
    --warn-ink: #4a3405;

    --axis: #b9bfcc;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  padding: 0 16px 64px;
  background: var(--bg);
  color: var(--ink);
  font: 16px/1.55 system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  overflow-x: hidden;
}

.page-head, .safety, main, .page-foot { max-width: 980px; margin: 0 auto; }

h1 { font-size: clamp(1.5rem, 4.5vw, 2.1rem); margin: 32px 0 8px; letter-spacing: -0.01em; }
h2 { font-size: clamp(1.1rem, 3vw, 1.35rem); margin: 0 0 10px; letter-spacing: -0.01em; }
h3 { font-size: 1rem; margin: 20px 0 6px; }
p { margin: 0 0 12px; }
code, kbd { font-family: var(--mono); font-size: 0.9em; }
kbd {
  border: 1px solid var(--line); border-bottom-width: 2px; border-radius: 4px;
  padding: 0 5px; background: var(--well);
}
.lede { color: var(--ink-dim); max-width: 68ch; }
.hint { color: var(--ink-dim); max-width: 72ch; }
.small { font-size: 0.86rem; }
.dim { color: var(--ink-dim); }

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

:where(a, button, input, summary, [tabindex]):focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 2px;
  border-radius: 4px;
}

.visually-hidden {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

.crumb { max-width: 980px; margin: 0 auto; padding-top: 18px; font-size: 0.86rem; }

/* ---- safety box ---------------------------------------------------------- */

.safety {
  background: var(--warn-bg);
  color: var(--warn-ink);
  border: 1px solid var(--warn-line);
  border-left-width: 6px;
  border-radius: var(--radius);
  padding: 16px 20px;
  margin-bottom: 28px;
}
.safety h2 { margin-bottom: 10px; }
.safety ul { margin: 0; padding-left: 20px; }
.safety li { margin-bottom: 8px; }
.safety li:last-child { margin-bottom: 0; }
.safety code, .safety kbd { background: rgba(127, 127, 127, 0.18); }

/* ---- sections and steps -------------------------------------------------- */

.step, .panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 20px;
}
.step.is-locked { opacity: 0.45; }
.step.is-locked::after {
  content: "Complete the previous step to unlock this one.";
  display: block; margin-top: 12px; font-size: 0.86rem; color: var(--ink-dim);
}
.step-num {
  display: inline-grid; place-items: center;
  width: 1.7em; height: 1.7em; margin-right: 8px;
  border-radius: 50%; background: var(--accent-strong); color: #fff;
  font-size: 0.8em; font-weight: 700;
}

/* ---- buttons and drop zone ----------------------------------------------- */

.btn {
  display: inline-block;
  font: inherit; font-size: 0.92rem;
  padding: 8px 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--well);
  color: var(--ink);
  cursor: pointer;
  text-decoration: none;
}
.btn:hover:not(:disabled) { border-color: var(--accent); }
.btn:disabled { cursor: not-allowed; opacity: 0.45; }
.btn-primary { background: var(--accent-strong); color: #fff; border-color: var(--accent-strong); font-weight: 600; }
.btn-small { padding: 4px 10px; font-size: 0.82rem; }

input[type="radio"], input[type="checkbox"], input[type="range"] { accent-color: var(--accent); }

.drop {
  border: 2px dashed var(--line);
  border-radius: var(--radius);
  background: var(--well);
  padding: 24px 16px;
  text-align: center;
}
.drop.is-over { border-color: var(--accent); background: var(--accent-soft); }
.drop p { color: var(--ink-dim); }

.status { min-height: 1.5em; font-size: 0.92rem; margin-top: 12px; }
.status.ok { color: var(--ok); font-weight: 600; }
.status.bad { color: var(--bad); font-weight: 600; }
.build-progress { display: block; width: 100%; max-width: 420px; height: 10px; margin: 6px 0 12px; accent-color: var(--accent); }
.status .hash { font-family: var(--mono); font-size: 0.8rem; word-break: break-all; display: block; font-weight: 400; color: var(--ink-dim); }

/* ---- hub ----------------------------------------------------------------- */

.mod-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 440px), 1fr));
  gap: 16px;
  margin: 4px 0 0;
  padding: 0;
  list-style: none;
}
.mod-card {
  background: var(--well);
  border: 1px solid var(--line);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius);
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.mod-card.is-research { border-left-color: var(--line); }
.mod-card h3 { margin: 0; font-size: 1.05rem; }
.mod-card p { margin: 0; color: var(--ink-dim); font-size: 0.92rem; }
.mod-card .touches { font-size: 0.86rem; }
.mod-card .go { margin-top: auto; padding-top: 8px; }
.tag {
  display: inline-block; font-size: 0.72rem; letter-spacing: 0.06em; text-transform: uppercase;
  border: 1px solid var(--line); border-radius: 999px; padding: 1px 8px; color: var(--ink-dim);
}
.tag.is-available { color: var(--accent-text); border-color: var(--accent); }

/* ---- the frame strip ----------------------------------------------------- */

.strip {
  display: grid;
  grid-template-columns: repeat(32, 1fr);
  gap: 2px;
  margin-top: 4px;
}
.cell {
  display: block;
  line-height: 0;
  height: 48px;
  background: var(--well);
  border: 1px solid transparent;
  border-radius: 3px;
  padding: 2px;
  position: relative;
  cursor: pointer;
  font: inherit;
  color: inherit;
}
.cell:hover:not(:disabled) { border-color: var(--ink-dim); }
.cell.is-custom { background: var(--accent-soft); }
.cell.is-moved { background: var(--moved-soft); }
.cell.is-locked { opacity: 0.45; }
.cell.is-selected { border-color: var(--ink); }
.cell.is-selected::after {
  content: ""; position: absolute; left: 50%; bottom: -8px; transform: translateX(-50%);
  border: 5px solid transparent; border-bottom-color: var(--ink);
}
.cell.is-over { border-color: var(--accent); box-shadow: 0 0 0 2px var(--accent) inset; }

svg.wave { display: block; width: 100%; height: 100%; }
svg.wave path { fill: none; vector-effect: non-scaling-stroke; }
svg.wave path.trace { stroke: var(--ink-dim); stroke-width: 1.5; }
svg.wave path.axis { stroke: var(--axis); stroke-width: 1; }
.is-custom svg.wave path.trace { stroke: var(--accent); }
.is-moved svg.wave path.trace { stroke: var(--moved); }

.axis-row { display: flex; justify-content: space-between; color: var(--ink-dim); font-size: 0.7rem; margin-top: 6px; }
.legend { display: flex; gap: 16px; color: var(--ink-dim); font-size: 0.78rem; margin-top: 8px; flex-wrap: wrap; }
.legend i { display: inline-block; width: 10px; height: 10px; border-radius: 2px; margin-right: 5px; vertical-align: -1px; }

/* ---- settings ------------------------------------------------------------ */

details.settings {
  margin-top: 16px; border: 1px solid var(--line); border-radius: 8px; padding: 10px 14px;
  background: var(--well);
}
details.settings summary { cursor: pointer; color: var(--ink-dim); font-size: 0.92rem; }
details.settings[open] summary { margin-bottom: 12px; }
.setgrid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; font-size: 0.92rem; }
.setgrid small { color: var(--ink-dim); display: block; margin-top: 4px; line-height: 1.45; }
.setgrid input[type="range"] { width: 100%; }
.setgrid label { display: block; }
.setgrid .buttons { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 12px; }

/* ---- editor -------------------------------------------------------------- */

.editor {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 18px;
  margin-top: 18px;
  align-items: stretch;
}
.big {
  height: 190px; background: var(--well); border: 1px solid var(--line);
  border-radius: 8px; padding: 10px;
}
.big.is-over { border-color: var(--accent); box-shadow: 0 0 0 2px var(--accent) inset; }
.side h3 { margin: 0; font-size: 1.15rem; }
.side h3 small { color: var(--ink-dim); font-weight: 400; margin-left: 8px; font-size: 0.85rem; }
.side .state { margin: 4px 0 12px; font-size: 0.9rem; color: var(--ink-dim); }
.side .state.is-custom { color: var(--accent-text); }
.side .state.is-moved { color: var(--moved-text); }
.modes { display: flex; gap: 14px; flex-wrap: wrap; font-size: 0.9rem; }
.modes label { display: inline-flex; gap: 5px; align-items: center; cursor: pointer; }
.consequence { color: var(--ink-dim); font-size: 0.82rem; margin-top: 8px; min-height: 3.4em; }
.limiter { margin-top: 14px; font-size: 0.9rem; }
.limiter input[type="range"] { width: 100%; }
.limiter small { color: var(--ink-dim); display: block; line-height: 1.45; }
.nav { display: flex; gap: 6px; margin-top: 12px; }
.chord { margin-top: 12px; font-size: 0.9rem; }
.chord summary { cursor: pointer; color: var(--ink-dim); }
.chord label { display: block; margin-top: 8px; }
.chord select {
  display: block; width: 100%; margin-top: 3px; padding: 4px 6px; font: inherit;
  color: var(--ink); background: var(--well); border: 1px solid var(--line); border-radius: 6px;
}
.chord small { color: var(--ink-dim); display: block; line-height: 1.45; margin-top: 6px; }
.chord .btn { margin-top: 10px; }

/* ---- your changes -------------------------------------------------------- */

.changes { margin-top: 18px; border-top: 1px solid var(--line); padding-top: 14px; }
.changes h3 { margin: 0 0 8px; font-size: 0.95rem; }
.chg {
  display: grid; grid-template-columns: 24px 1fr auto; gap: 10px; align-items: center;
  padding: 8px 10px; background: var(--well); border-left: 3px solid var(--accent);
  border-radius: 6px; margin-top: 6px; font-size: 0.9rem;
}
.chg.is-base { border-left-color: var(--moved); }
.chg .n { color: var(--ink-dim); }
.chg small { color: var(--ink-dim); }
.chg .buttons { display: flex; gap: 6px; }
.empty { color: var(--ink-dim); font-size: 0.9rem; }

.ask {
  margin-top: 10px; padding: 12px; border: 1px solid var(--accent); border-radius: 8px;
  background: var(--accent-soft); font-size: 0.9rem;
}
.ask .buttons { display: flex; gap: 8px; margin-top: 10px; flex-wrap: wrap; }

/* ---- firmware step ------------------------------------------------------- */

.fw-files { list-style: none; padding: 0; margin: 12px 0 0; }
.fw-files li {
  display: flex; gap: 10px; align-items: baseline; flex-wrap: wrap;
  padding: 8px 10px; background: var(--well); border: 1px solid var(--line);
  border-radius: 8px; margin-top: 8px; font-size: 0.9rem;
}
.fw-files .name { font-family: var(--mono); font-size: 0.82rem; word-break: break-all; }
.fw-files .mods { color: var(--ink-dim); font-size: 0.85rem; flex-basis: 100%; margin: 0; }
.fw-problem {
  border-left: 3px solid var(--bad); background: var(--well); border-radius: 6px;
  padding: 10px 12px; margin-top: 10px; font-size: 0.9rem;
}
.fw-problem details { margin-top: 6px; }
.fw-problem summary { cursor: pointer; color: var(--ink-dim); font-size: 0.85rem; }
.fw-problem ul { margin: 6px 0 0; padding-left: 20px; color: var(--ink-dim); font-size: 0.82rem; font-family: var(--mono); }

/* ---- checklist ----------------------------------------------------------- */

.checklist { list-style: none; padding: 0; margin: 16px 0 0; }
.checklist li {
  display: grid; grid-template-columns: 1.4em 1fr; gap: 8px;
  padding: 6px 0; border-bottom: 1px solid var(--line); font-size: 0.92rem;
}
.checklist li:last-child { border-bottom: 0; }
.checklist .mark { font-weight: 700; text-align: center; }
.checklist li.ok .mark { color: var(--ok); }
.checklist li.bad .mark { color: var(--bad); }
.checklist .detail { display: block; color: var(--ink-dim); font-size: 0.82rem; font-family: var(--mono); word-break: break-all; }

.build-row { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; margin-top: 16px; }
.download-row { margin-top: 16px; }
.after { border-top: 1px solid var(--line); margin-top: 20px; padding-top: 4px; }
.after p { color: var(--ink-dim); max-width: 72ch; }

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

.page-foot {
  margin-top: 36px; padding-top: 16px;
  border-top: 1px solid var(--line);
  color: var(--ink-dim); font-size: 0.85rem;
}

/* ---- narrow screens ------------------------------------------------------ */

@media (max-width: 720px) {
  .editor { grid-template-columns: 1fr; }
  .setgrid { grid-template-columns: 1fr; }
  .cell { height: 38px; }
  .big { height: 150px; }
}
@media (max-width: 480px) {
  body { padding: 0 12px 48px; }
  .step, .panel { padding: 14px; }
  .cell { height: 32px; }
  .strip { gap: 1px; }
}

/* ---- workbench: the loaded image ----------------------------------------- */

.restore {
  display: flex; gap: 12px; align-items: center; flex-wrap: wrap;
  background: var(--well); border: 1px solid var(--line);
  border-radius: 8px; padding: 10px 12px; font-size: 0.9rem; color: var(--dim);
}

.drop-small { padding: 14px 12px; margin-top: 10px; }
.drop-small p { margin-bottom: 8px; }

.fw-file {
  background: var(--well); border: 1px solid var(--line); border-left: 3px solid var(--accent);
  border-radius: 8px; padding: 12px 14px; margin-top: 12px;
}
.fw-file p { margin: 0 0 6px; }
.fw-file p:last-child { margin-bottom: 0; }
.fw-headline { font-size: 0.95rem; }
.fw-meta { display: flex; gap: 14px; flex-wrap: wrap; color: var(--ink-dim); font-size: 0.82rem; }
.fw-meta .name, .fw-meta .hash { font-family: var(--mono); word-break: break-all; }
.fw-file .buttons { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 10px; }

#stock-extra > div > .hint { margin-top: 4px; }

/* ---- workbench: tool cards and the queue --------------------------------- */

.mod-card .card-state { color: var(--ink); font-size: 0.86rem; }
.mod-card.is-queued { border-left-color: var(--accent); }
.mod-card.is-queued .card-state { color: var(--accent-text); font-weight: 600; }
.mod-card.is-present .card-state { color: var(--moved-text); }
.mod-card.is-blocked { border-left-color: var(--bad); }
.mod-card.is-blocked .card-state { color: var(--bad); }
.mod-card.is-locked { border-left-color: var(--line); }
.mod-card.is-locked .card-state { color: var(--ink-dim); }
.mod-card .go { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }

.queue-group {
  background: var(--well); border: 1px solid var(--line); border-left: 3px solid var(--accent);
  border-radius: 8px; padding: 10px 12px; margin-top: 8px;
}
.queue-head { display: flex; gap: 12px; align-items: center; justify-content: space-between; flex-wrap: wrap; }
.queue-head h4 { margin: 0; font-size: 0.95rem; }
.queue-head .buttons { display: flex; gap: 6px; }
.queue-lines { margin: 8px 0 0; padding-left: 20px; color: var(--ink-dim); font-size: 0.88rem; }
.queue-lines li { margin-bottom: 2px; }

/* ---- workbench: one tool view -------------------------------------------- */

#view-tool .crumb { padding-top: 0; margin-bottom: 12px; }
#tool-title:focus-visible { outline: 3px solid var(--accent); outline-offset: 4px; }
#image-head:focus-visible, #build-head:focus-visible { outline: 3px solid var(--accent); outline-offset: 4px; }
.tool-done-row { margin-top: 18px; border-top: 1px solid var(--line); padding-top: 16px; }
.tool-note {
  border: 1px solid var(--warn-line); background: var(--warn-bg); color: var(--warn-ink);
  border-radius: 8px; padding: 10px 12px; margin-bottom: 14px; font-size: 0.9rem;
}
.tool-note p { margin: 0; }

/* ---- workbench: the "add the official file too" recommendation ------------ */

.advice {
  margin-top: 14px; padding: 12px 14px;
  border: 1px solid var(--line); border-left: 3px solid var(--ink-dim);
  border-radius: 8px; background: var(--well);
}
.advice > p:first-child { margin: 0; color: var(--ink); font-size: 0.92rem; }
.advice.is-have { border-left-color: var(--ok); }
.advice.is-have > p:first-child { color: var(--ink-dim); }
.advice .drop-small { margin-top: 10px; }
.advice .status { margin-top: 8px; }

/* ---- plain-language layer: one instruction per step ---------------------- */

.lead-line {
  font-size: 1.02rem; font-weight: 600; color: var(--ink); margin: 0 0 10px;
}
.safety details { margin-top: 10px; }
.safety summary { cursor: pointer; font-size: 0.9rem; }
.safety details p { margin-top: 8px; }

.steps-list { margin: 8px 0 16px; padding-left: 22px; color: var(--ink); }
.steps-list li { margin-bottom: 6px; }

.checks { margin-top: 12px; border: 1px solid var(--line); border-radius: 8px; padding: 8px 12px; background: var(--well); }
.checks > summary { cursor: pointer; color: var(--ink-dim); font-size: 0.9rem; }
.checks[open] > summary { margin-bottom: 4px; }

.warn-line {
  border: 1px solid var(--warn-line); background: var(--warn-bg); color: var(--warn-ink);
  border-radius: 8px; padding: 10px 12px; margin: 16px 0 12px; font-size: 0.92rem; max-width: 60ch;
}
.download-row { margin-top: 16px; }

.fw-file details { margin-top: 8px; }
.fw-file summary { cursor: pointer; color: var(--ink-dim); font-size: 0.82rem; }
.fw-file details ul { margin: 6px 0 0; padding-left: 20px; color: var(--ink-dim); font-size: 0.8rem; }
.fw-meta { color: var(--ink-dim); font-size: 0.85rem; word-break: break-all; }
.limiter details { margin-top: 4px; }
.limiter summary { cursor: pointer; color: var(--ink-dim); font-size: 0.8rem; }

/* ---- tool cards: facts + "More about this tool" ----------------------------------------- */
.mod-card .tags { display: flex; gap: 6px; flex-wrap: wrap; }
.tag.is-proven { color: var(--ok, #58c27d); border-color: currentColor; }
.facts { display: grid; grid-template-columns: max-content 1fr; gap: 4px 14px; margin: 4px 0 0; font-size: 0.88rem; }
.facts dt { color: var(--ink); font-weight: 600; }
.facts dd { margin: 0; color: var(--ink-dim); }
.about-more { margin-top: 4px; font-size: 0.88rem; }
.about-more summary { cursor: pointer; color: var(--ink); }
.about-more h4 { margin: 12px 0 2px; font-size: 0.9rem; color: var(--ink); }
.about-more p { margin: 0; }
@media (max-width: 560px) { .facts { grid-template-columns: 1fr; } .facts dd { margin-bottom: 6px; } }
/* a single tool gets the whole row instead of leaving half of it empty */
.mod-grid > .mod-card:only-child { grid-column: 1 / -1; }