/* NEORV32 demo page: same palette as the fpa viewer (light + dark). */
:root{
  --bg:#fbfcfd;--ink:#1d2733;--muted:#5d6b7c;--line:#d9dee5;--panel:#ffffff;--chip:#eef2f7;
  --bus:#1f5fa8;--sel:#e8820c;--danger:#d43d3d;--ok:#2e9d5b;
  --glow:#f59e0b;--led-on:#36d26b;--led-off:#2b3440;--term-bg:#10151b;--term-ink:#d7e0ea;
  --shadow:0 1px 2px rgba(20,30,40,.10),0 4px 14px rgba(20,30,40,.06);
  color-scheme:light;
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --bg:#15181c;--ink:#e3e8ee;--muted:#98a4b1;--line:#2d343c;--panel:#1c2026;--chip:#262c34;
  --bus:#6aa8ff;--sel:#ffa94d;--danger:#ff6b6b;--ok:#5cc98a;--led-off:#262c34;--term-bg:#0d1014;
  --shadow:0 1px 2px rgba(0,0,0,.4),0 6px 20px rgba(0,0,0,.3);color-scheme:dark;}}
:root[data-theme="dark"]{
  --bg:#15181c;--ink:#e3e8ee;--muted:#98a4b1;--line:#2d343c;--panel:#1c2026;--chip:#262c34;
  --bus:#6aa8ff;--sel:#ffa94d;--danger:#ff6b6b;--ok:#5cc98a;--led-off:#262c34;--term-bg:#0d1014;
  --shadow:0 1px 2px rgba(0,0,0,.4),0 6px 20px rgba(0,0,0,.3);color-scheme:dark;}
*{box-sizing:border-box}
[hidden]{display:none!important}
html,body{margin:0;height:100%;background:var(--bg);color:var(--ink);
  font:14px/1.45 "Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif}
body{display:flex;flex-direction:column;min-height:100%}
a{color:var(--bus)}
code,.mono{font-family:ui-monospace,"SFMono-Regular",Menlo,Consolas,monospace;font-size:.92em}
button,.btn{font:inherit;font-size:13px;color:var(--ink);background:var(--chip);border:1px solid var(--line);
  border-radius:6px;height:30px;padding:0 10px;cursor:pointer;display:inline-flex;align-items:center;gap:6px}
button:hover:not(:disabled),.btn:hover{border-color:var(--muted)}
button:disabled{opacity:.5;cursor:default}
button:focus-visible,.btn:focus-within,input:focus-visible{outline:2px solid var(--bus);outline-offset:1px}

/* header */
.intro{display:flex;gap:18px;align-items:flex-start;justify-content:space-between;padding:12px 16px 10px;
  border-bottom:1px solid var(--line);background:var(--panel)}
.intro h1{font-size:17px;margin:0 0 4px}
.intro p{margin:0;color:var(--muted);font-size:13px;max-width:1100px}
.intro p b{color:var(--ink);font-weight:600}
.intro nav{display:flex;gap:12px;align-items:center;white-space:nowrap;font-size:13px}

/* split layout */
.split{flex:1;display:flex;min-height:0}
.diagram{flex:1;min-width:0;display:flex;flex-direction:column;border-right:1px solid var(--line)}
.diagram .bar{display:flex;gap:14px;align-items:center;padding:6px 12px;font-size:12px;color:var(--muted);
  border-bottom:1px solid var(--line);flex-wrap:wrap}
.diagram .bar .sw{display:inline-block;width:14px;height:10px;border-radius:3px;vertical-align:-1px;margin-right:4px}
.sw.glow{background:var(--glow);box-shadow:0 0 6px var(--glow)}
.sw.off{border:1px dashed var(--muted);opacity:.6}
#level{margin-left:auto}
#level .warn{color:var(--sel)}
#fpa{flex:1;width:100%;border:0;display:block;background:var(--bg)}
.sim{width:clamp(420px,36vw,620px);overflow:auto;padding:10px;display:flex;flex-direction:column;gap:10px}
.card{background:var(--panel);border:1px solid var(--line);border-radius:10px;padding:10px 12px;box-shadow:var(--shadow);
  transition:box-shadow .3s,border-color .3s}
.card.flash{border-color:var(--glow);box-shadow:0 0 0 3px color-mix(in srgb,var(--glow) 45%,transparent)}
.card-h{display:flex;align-items:baseline;gap:8px;margin-bottom:8px}
.card-h h2{font-size:13px;margin:0;text-transform:uppercase;letter-spacing:.5px}
.hint{color:var(--muted);font-size:12px;flex:1}
.row{display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.sub{color:var(--muted);font-size:12px;margin-top:6px}
.switch{display:inline-flex;align-items:center;gap:6px;font-size:13px;cursor:pointer;user-select:none}
.speed{margin-left:auto;font-variant-numeric:tabular-nums;font-size:13px}
.speed b{font-size:15px}

/* terminal */
.term{position:relative;background:var(--term-bg);color:var(--term-ink);border-radius:7px;height:300px;overflow:auto;
  padding:8px 10px;font:12px/1.3 ui-monospace,"SFMono-Regular",Menlo,Consolas,monospace;white-space:pre;cursor:text;
  outline:none;border:1px solid transparent}
.term-wrap{position:relative}
.term-wrap:focus-within .term{border-color:var(--bus)}
.term.bell{animation:bell .25s}
@keyframes bell{50%{background:#3a1d1d}}
#term-cur::after{content:"";display:inline-block;width:.6em;height:1.1em;vertical-align:-.2em;background:var(--term-ink);opacity:.25}
.term-wrap:focus-within #term-cur::after{opacity:.85;animation:blink 1s steps(1) infinite}
@keyframes blink{50%{opacity:0}}
#term-in{position:absolute;left:10px;bottom:10px;width:1px;height:1px;opacity:0;border:0;padding:0;resize:none;
  pointer-events:none;font-size:16px;overflow:hidden}

/* LEDs */
.leds{display:flex;gap:10px;justify-content:space-between;padding:0 4px}
.led{display:flex;flex-direction:column;align-items:center;gap:3px;font-size:11px;color:var(--muted)}
.led i{width:22px;height:22px;border-radius:50%;background:var(--led-off);border:1px solid var(--line);
  transition:background .05s,box-shadow .05s}
.led.on i{background:var(--led-on);box-shadow:0 0 10px var(--led-on),inset 0 -3px 6px rgba(0,0,0,.2)}
#gpio-hex{font-size:12px;color:var(--muted)}

/* programs */
.progs{list-style:none;margin:0 0 8px;padding:0;display:flex;flex-direction:column;gap:4px}
.progs button{width:100%;height:auto;min-height:30px;padding:5px 9px;display:grid;grid-template-columns:1fr auto;
  text-align:left;gap:1px 10px;background:transparent}
.progs button:hover:not(:disabled){background:var(--chip)}
.progs button.cur{border-color:var(--bus)}
.progs .n{font-weight:600;font-family:ui-monospace,"SFMono-Regular",Menlo,Consolas,monospace;font-size:12.5px}
.progs .z{color:var(--muted);font-size:11.5px;text-align:right}
.progs .d{grid-column:1/3;color:var(--muted);font-size:12px}
.file{position:relative}
.status{font-size:13px;margin-top:8px;min-height:1.4em}
.status.err{color:var(--danger)}
.status.ok{color:var(--ok)}
.progress{height:6px;background:var(--chip);border-radius:3px;overflow:hidden;margin-top:6px}
.progress div{height:100%;width:0;background:var(--bus);transition:width .1s}

/* activity stats */
.stats{width:100%;border-collapse:collapse;font-size:12.5px}
.stats td{padding:2px 4px}
.stats td.l{white-space:nowrap;width:1%}
.stats td.v{text-align:right;width:1%;white-space:nowrap;font-variant-numeric:tabular-nums;color:var(--muted)}
.stats .b{height:8px;background:var(--chip);border-radius:4px;overflow:hidden}
.stats .b i{display:block;height:100%;width:0;background:var(--glow)}
.stats tr.sel td{background:color-mix(in srgb,var(--glow) 18%,transparent)}

footer{padding:8px 16px;color:var(--muted);font-size:12px;border-top:1px solid var(--line);background:var(--panel)}

/* narrow screens: stack the diagram above the simulation */
@media (max-width:980px){
  html,body{height:auto}
  .intro{flex-direction:column;gap:6px}
  .split{flex-direction:column;height:auto}
  .diagram{flex:none;border-right:0;border-bottom:1px solid var(--line);height:72vh;min-height:420px}
  .sim{width:auto;overflow:visible}
  .term{height:260px}
}