/* Layout: the page is a docking workspace. A main menu bar on top, sections are ImGui windows
   (title bar, tabs, tables, check boxes) on the dark viewport background of the tool. */
:root {
  color-scheme: dark;
  /* ImGui "dark" style and ImPlot colors, as in the screenshots */
  --viewport: #141417;
  --window: #0f0f10;
  --title: #0a0a0b;
  --title-active: #294a7a;
  --accent: #4296fa;
  --frame: rgba(41, 74, 122, 0.54);
  --frame-hover: rgba(66, 150, 250, 0.40);
  --header: rgba(66, 150, 250, 0.31);
  --button: rgba(66, 150, 250, 0.40);
  --border: rgba(110, 110, 128, 0.50);
  --row-alt: rgba(255, 255, 255, 0.04);
  --text: #f2f2f5;
  --text-dim: #9a9aa6;
  --plot-blue: #4c72b0;
  --plot-orange: #dd8452;
  --plot-green: #55a868;
  --ok: #27ae60;
  --warn: #e67e22;

  --font-ui: "IBM Plex Mono", ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
  --font-body: "IBM Plex Sans", system-ui, -apple-system, "Segoe UI", sans-serif;

  --step--1: 0.8125rem;
  --step-0: 1rem;
  --step-1: 1.25rem;
  --step-2: 1.625rem;
  --step-3: clamp(1.9rem, 1.4rem + 2.2vw, 2.9rem);
  --gutter: clamp(16px, 3vw, 32px);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 48px; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body {
  margin: 0;
  background: var(--viewport);
  color: var(--text);
  font: 400 var(--step-0)/1.6 var(--font-body);
  -webkit-font-smoothing: antialiased;
}
img, video { max-width: 100%; height: auto; display: block; }
* { scrollbar-color: #3a3a46 #0a0a0b; }
a { color: var(--accent); }
a:focus-visible, button:focus-visible, summary:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
h1, h2, h3 { font-family: var(--font-ui); font-weight: 600; text-wrap: balance; margin: 0; line-height: 1.2; }
p { margin: 0; }
code, .mono { font-family: var(--font-ui); font-size: 0.92em; }

/* ---- main menu bar ---- */
.menubar {
  position: sticky; top: env(safe-area-inset-top, 0px); z-index: 10;
  display: flex; align-items: center; gap: 4px; flex-wrap: wrap;
  padding: 2px var(--gutter);
  background: #18181c;
  border-bottom: 1px solid var(--border);
  font: 500 15px/1 var(--font-ui);
}
.menubar .brand { color: var(--text); text-decoration: none; padding: 7px 10px 7px 0; font-weight: 600; letter-spacing: 0.02em; }
.menubar .brand span { color: var(--accent); }
.menubar a.item { color: var(--text); text-decoration: none; padding: 7px 9px; border-radius: 0; }
.menubar a.item:hover { background: var(--header); }
.menubar .status { margin-left: auto; color: var(--plot-green); font-size: 13px; padding: 7px 0; white-space: nowrap; }
@media (max-width: 720px) { .menubar .status { display: none; } }

.page { padding-inline: var(--gutter); padding-block: 28px 40px; max-width: 1360px; margin: 0 auto; display: grid; gap: 28px; }

/* ---- ImGui window ---- */
.win { background: var(--window); border: 1px solid var(--border); min-width: 0; }
.win > .titlebar {
  display: flex; align-items: center; gap: 8px;
  background: var(--title-active); padding: 3px 8px;
  font: 500 13px/1.5 var(--font-ui); color: var(--text);
}
.win > .titlebar .tri { font-size: 10px; opacity: 0.9; }
.win > .titlebar .x { margin-left: auto; opacity: 0.8; }
.win.inactive > .titlebar { background: var(--title); }
.win > .body { padding: 18px clamp(14px, 2.5vw, 26px) 22px; min-width: 0; }

/* docking tabs */
.tabs { display: flex; gap: 2px; flex-wrap: wrap; background: var(--title); padding: 3px 6px 0; border-bottom: 2px solid var(--title-active); }
.tabs button {
  font: 500 13px/1.5 var(--font-ui); color: var(--text);
  background: #1d2f4a; border: 0; padding: 4px 12px 3px; cursor: pointer;
}
.tabs button[aria-selected="true"] { background: var(--title-active); }
.tabs button:hover { background: var(--frame-hover); }

/* buttons, check boxes, frames */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  font: 500 15px/1 var(--font-ui); color: var(--text); text-decoration: none;
  background: var(--button); border: 0; padding: 10px 16px; cursor: pointer;
}
.btn:hover { background: var(--accent); }
.btn.primary { background: var(--accent); }
.btn.primary:hover { background: #63a9fb; }
.btn small { font-weight: 400; opacity: 0.85; font-size: 12px; }

.checks { list-style: none; margin: 0; padding: 0; display: grid; gap: 7px; }
.checks li { display: grid; grid-template-columns: 18px 1fr; gap: 10px; align-items: start; }
.checks li::before {
  content: "✓"; width: 16px; height: 16px; margin-top: 4px;
  display: grid; place-items: center;
  background: var(--frame); color: var(--accent);
  font: 600 12px/1 var(--font-ui);
}
.checks li strong { font-weight: 600; }

.frame-text { background: var(--frame); padding: 2px 8px; font-family: var(--font-ui); font-size: 14px; }
.dim { color: var(--text-dim); }
.label { font: 500 12px/1.4 var(--font-ui); text-transform: uppercase; letter-spacing: 0.08em; color: var(--text-dim); }

/* ---- hero ---- */
.hero { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: clamp(20px, 3vw, 40px); align-items: center; }
@media (max-width: 960px) { .hero { grid-template-columns: 1fr; } }
.hero h1 { font-size: var(--step-3); letter-spacing: -0.01em; }
.hero h1 em { font-style: normal; color: var(--accent); }
.hero .lead { font-size: var(--step-1); line-height: 1.5; margin-top: 18px; max-width: 34em; color: #d6d6de; }
.hero .cta { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 26px; }
.hero .facts { margin-top: 22px; display: flex; flex-wrap: wrap; gap: 8px 18px; font: 13px/1.4 var(--font-ui); color: var(--text-dim); }
.hero .facts b { color: var(--plot-green); font-weight: 500; }

.media { position: relative; background: #000; }
.media video, .media img { width: 100%; height: auto; aspect-ratio: 1600 / 950; object-fit: cover; }
.caption { font: 13px/1.5 var(--font-ui); color: var(--text-dim); padding: 8px 2px 0; }

/* ---- pillars ---- */
.pillar { display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); gap: clamp(18px, 3vw, 36px); align-items: start; }
.pillar.flip { grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); }
.pillar.flip .media-col { order: 2; }
@media (max-width: 960px) { .pillar, .pillar.flip { grid-template-columns: 1fr; } .pillar.flip .media-col { order: 0; } }
.pillar h2 { font-size: var(--step-2); }
.pillar .intro { margin: 12px 0 18px; max-width: 38em; color: #d6d6de; }
.pillar .checks { margin-bottom: 20px; }

/* ImGui table */

/* ---- feature grid ---- */
.features { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
@media (max-width: 960px) { .features { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 620px) { .features { grid-template-columns: 1fr; } }
.features .win .body { padding: 14px 16px 18px; }
.features p { color: #d0d0d8; font-size: 15px; }
.features p + p { margin-top: 8px; }

/* ---- maker steps ---- */
.steps { counter-reset: step; display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 260px), 1fr)); gap: 16px; margin-top: 22px; }
.steps li { list-style: none; background: #15151a; border: 1px solid var(--border); padding: 14px 16px; }
.steps li::before { counter-increment: step; content: "step " counter(step); display: block; font: 500 12px/1 var(--font-ui); letter-spacing: 0.08em; text-transform: uppercase; color: var(--accent); margin-bottom: 8px; }
.steps ol { margin: 0; padding: 0; }
pre.console {
  margin: 10px 0 0; padding: 10px 12px; background: #0a0a0b; border: 1px solid rgba(110,110,128,.35);
  font: 12.5px/1.5 var(--font-ui); color: #dcdce4; overflow-x: auto; white-space: pre;
}
pre.console .in { color: #8cc4ff; }
pre.console .t { color: var(--text-dim); }

/* ---- gallery ---- */
.gallery { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 420px), 1fr)); gap: 16px; }
.gallery a { display: block; border: 1px solid var(--border); }
.gallery a:hover { border-color: var(--accent); }

/* ---- downloads ---- */
.downloads { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; }
@media (max-width: 1200px) { .downloads { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 620px) { .downloads { grid-template-columns: 1fr; } }
.dl { display: flex; flex-direction: column; }
.dl .body { flex: 1; display: flex; flex-direction: column; gap: 12px; }
.dl h3 { font-size: var(--step-1); }
.dl .meta { font: 13px/1.6 var(--font-ui); color: var(--text-dim); }
.dl .btn { justify-self: start; margin-top: auto; }
.free { display: flex; flex-wrap: wrap; gap: 8px 24px; align-items: baseline; margin-bottom: 18px; }
.free p { max-width: 60em; color: #d0d0d8; }

/* ---- FAQ ---- */
details { border-bottom: 1px solid rgba(110,110,128,.3); }
details summary {
  cursor: pointer; list-style: none; padding: 9px 4px; font: 500 15px/1.4 var(--font-ui);
  display: grid; grid-template-columns: 16px 1fr; gap: 8px;
}
details summary::-webkit-details-marker { display: none; }
details summary::before { content: "▶"; font-size: 10px; line-height: 21px; color: var(--text-dim); }
details[open] summary::before { content: "▼"; }
details summary:hover { background: var(--header); }
details p { padding: 0 4px 12px 28px; color: #d0d0d8; max-width: 62em; }

footer { padding-inline: var(--gutter); padding-block: 22px 30px; border-top: 1px solid var(--border); font: 13px/1.6 var(--font-ui); color: var(--text-dim); }
footer .row { max-width: 1360px; margin: 0 auto; display: flex; flex-wrap: wrap; gap: 8px 24px; justify-content: space-between; }
footer a { color: var(--text-dim); }

/* ---- language switch (EN | DE) in the menu bar ---- */
.menubar .lang { display: flex; margin-left: 12px; border: 1px solid var(--border); }
.menubar .lang a { color: var(--text-dim); text-decoration: none; padding: 5px 8px; font-size: 13px; }
.menubar .lang a:hover { background: var(--header); color: var(--text); }
.menubar .lang a[aria-current="true"] { background: var(--title-active); color: var(--text); }
@media (max-width: 720px) { .menubar .lang { margin-left: auto; } }