:root {
  --bg: #0b0d14;
  --bg2: #11141e;
  --panel: #151926;
  --panel2: #1b2031;
  --line: rgba(255,255,255,.08);
  --line2: rgba(255,255,255,.14);
  --txt: #e9ecf5;
  --muted: #8e96ad;
  --acc: #22d3ee;
  --acc2: #8b5cf6;
  --ok: #34d399;
  --warn: #fbbf24;
  --bad: #f87171;
  --r: 16px;
  color-scheme: dark;
}
* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; }
body {
  background: radial-gradient(1200px 600px at 80% -10%, rgba(139,92,246,.16), transparent 60%),
              radial-gradient(900px 500px at -10% 10%, rgba(34,211,238,.10), transparent 60%), var(--bg);
  color: var(--txt);
  font: 15px/1.45 "Segoe UI", system-ui, -apple-system, Roboto, "Helvetica Neue", Arial, sans-serif;
  display: flex; flex-direction: column; min-height: 100vh;
}
a { color: var(--acc); }
button, input, select { font: inherit; color: inherit; }
[hidden] { display: none !important; }

/* ---------- Kopf ---------- */
.top { display: flex; align-items: center; gap: 16px; padding: 10px 18px; border-bottom: 1px solid var(--line); background: rgba(11,13,20,.75); backdrop-filter: blur(10px); position: sticky; top: 0; z-index: 20; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--txt); flex: none; }
.brand b { display: block; font-size: 16px; letter-spacing: -.01em; }
.brand small { display: block; color: var(--muted); font-size: 11px; letter-spacing: .12em; text-transform: uppercase; margin-top: -2px; }
.devs { display: flex; gap: 6px; flex: 1; min-width: 0; overflow-x: auto; scrollbar-width: none; }
.devs button { display: flex; align-items: center; gap: 8px; padding: 7px 12px; border-radius: 999px; background: transparent; border: 1px solid var(--line); cursor: pointer; white-space: nowrap; color: var(--muted); }
.devs button.is-on { background: var(--panel2); border-color: var(--line2); color: var(--txt); }
.devs button i, .net i { width: 8px; height: 8px; border-radius: 50%; background: #555c70; flex: none; }
.devs button i.on { background: var(--ok); box-shadow: 0 0 0 3px rgba(52,211,153,.2); }
.devs button i.run { background: var(--acc); box-shadow: 0 0 0 3px rgba(34,211,238,.25); animation: pulse 1s infinite; }
.top-r { display: flex; align-items: center; gap: 12px; flex: none; }
.net { display: flex; align-items: center; gap: 7px; color: var(--muted); font-size: 13px; }
.net.on i { background: var(--ok); }
.net.off i { background: var(--bad); }
@keyframes pulse { 50% { opacity: .45; } }

.btn { border: 1px solid var(--line2); background: var(--panel2); border-radius: 10px; padding: 8px 14px; cursor: pointer; transition: background .15s, border-color .15s, transform .1s; }
.btn:hover { border-color: rgba(255,255,255,.28); }
.btn:active { transform: scale(.98); }
.btn.ghost { background: transparent; }
.btn.primary { background: linear-gradient(135deg, var(--acc), var(--acc2)); border: 0; color: #fff; font-weight: 700; }
.btn.big { padding: 12px 22px; font-size: 16px; border-radius: 12px; }
.btn.sm { padding: 5px 10px; font-size: 13px; border-radius: 8px; }
.btn.danger:hover { border-color: var(--bad); color: var(--bad); }
.btn:disabled { opacity: .5; cursor: default; }
.icon-btn { width: 34px; height: 34px; border-radius: 10px; border: 1px solid var(--line); background: transparent; cursor: pointer; font-size: 18px; line-height: 1; }

main { flex: 1; width: 100%; max-width: 1400px; margin: 0 auto; padding: 18px; }

/* ---------- Willkommen ---------- */
.welcome { display: grid; place-items: center; min-height: calc(100vh - 150px); }
.w-card { width: 100%; max-width: 620px; background: linear-gradient(180deg, var(--panel), var(--bg2)); border: 1px solid var(--line); border-radius: 24px; padding: 34px; box-shadow: 0 40px 80px -40px rgba(0,0,0,.8); text-align: center; }
.w-card h1 { margin: 0 0 10px; font-size: clamp(26px, 4vw, 34px); letter-spacing: -.02em; background: linear-gradient(135deg, #fff 30%, var(--acc)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.lead { color: var(--muted); margin: 0 auto 22px; max-width: 520px; }
.lead b { color: var(--txt); }
.steps { list-style: none; padding: 0; margin: 0 0 22px; text-align: left; display: grid; gap: 10px; }
.steps li { display: flex; gap: 12px; align-items: flex-start; padding: 12px 14px; border-radius: 14px; background: rgba(255,255,255,.03); border: 1px solid var(--line); }
.steps li > span { flex: none; width: 28px; height: 28px; border-radius: 50%; display: grid; place-items: center; font-weight: 800; font-size: 13px; background: linear-gradient(135deg, var(--acc), var(--acc2)); color: #fff; }
.steps b { display: block; }
.steps small { color: var(--muted); }
.pair { display: grid; gap: 14px; justify-items: center; }
.code { display: flex; gap: 8px; align-items: center; }
.code span { color: var(--muted); font-size: 20px; }
.code input { width: 48px; height: 60px; text-align: center; font-size: 28px; font-weight: 700; border-radius: 12px; border: 1px solid var(--line2); background: var(--bg); outline: none; caret-color: var(--acc); }
.code input:focus { border-color: var(--acc); box-shadow: 0 0 0 3px rgba(34,211,238,.2); }
.pcname { display: flex; flex-direction: column; gap: 4px; color: var(--muted); font-size: 13px; text-align: left; width: 100%; max-width: 330px; }
.err { color: var(--bad); margin: 0; }
#pair-cancel { margin-top: 12px; }

/* ---------- Gerät ---------- */
.dev { display: grid; grid-template-columns: minmax(0, 1fr) 420px; gap: 18px; align-items: start; }
.stage-col { position: sticky; top: 76px; display: flex; flex-direction: column; gap: 10px; min-width: 0; }
.tools { display: flex; gap: 6px; flex-wrap: wrap; background: var(--panel); border: 1px solid var(--line); border-radius: 14px; padding: 6px; }
.tool { display: flex; align-items: center; gap: 7px; padding: 7px 11px; border-radius: 10px; border: 0; background: transparent; color: var(--muted); cursor: pointer; }
.tool svg { width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.tool:hover { color: var(--txt); background: rgba(255,255,255,.04); }
.tool.is-on { background: linear-gradient(135deg, rgba(34,211,238,.22), rgba(139,92,246,.22)); color: var(--txt); box-shadow: inset 0 0 0 1px rgba(34,211,238,.4); }
.tools .sep { flex: 1; }
.stage-wrap { display: grid; place-items: center; height: calc(100vh - 200px); min-height: 380px; background: repeating-linear-gradient(45deg, rgba(255,255,255,.015) 0 10px, transparent 10px 20px), var(--bg2); border: 1px solid var(--line); border-radius: 20px; padding: 18px; overflow: hidden; }
.phone { position: relative; border-radius: 26px; padding: 10px; background: #05060a; box-shadow: 0 0 0 2px #2a3044, 0 30px 70px -30px rgba(0,0,0,.9), 0 0 60px -20px rgba(34,211,238,.35); }
.phone canvas { display: block; border-radius: 18px; background: #0d1018; touch-action: none; cursor: crosshair; }
.phone.t-move canvas { cursor: grab; }
.phone.t-live canvas { cursor: pointer; }
.phone-hint { position: absolute; left: 10px; right: 10px; bottom: 22px; text-align: center; font-size: 12px; color: var(--muted); pointer-events: none; padding: 0 16px; }
.stage-help { margin: 0; color: var(--muted); font-size: 13px; text-align: center; min-height: 1.2em; }

.side { display: flex; flex-direction: column; gap: 14px; min-width: 0; }
.card { background: var(--panel); border: 1px solid var(--line); border-radius: var(--r); padding: 16px; }
.card h3 { margin: 0 0 10px; font-size: 14px; text-transform: uppercase; letter-spacing: .08em; color: var(--muted); display: flex; align-items: center; gap: 8px; }
.run-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 10px; position: relative; }
.run-head h2 { margin: 0; font-size: 20px; }
.run-head small { color: var(--muted); }
.menu { position: absolute; right: 0; top: 40px; background: var(--panel2); border: 1px solid var(--line2); border-radius: 12px; padding: 6px; z-index: 5; box-shadow: 0 20px 40px -10px rgba(0,0,0,.7); }
.menu button { display: block; width: 100%; text-align: left; padding: 8px 12px; border: 0; background: transparent; border-radius: 8px; cursor: pointer; white-space: nowrap; color: var(--bad); }
.menu button:hover { background: rgba(255,255,255,.05); }
.checks { display: grid; gap: 6px; margin: 12px 0; }
.chk { display: flex; align-items: center; gap: 8px; font-size: 13px; padding: 7px 10px; border-radius: 10px; background: rgba(255,255,255,.03); }
.chk::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--ok); flex: none; }
.chk.bad { background: rgba(248,113,113,.08); color: #fecaca; }
.chk.bad::before { background: var(--bad); }
.chk.warn { background: rgba(251,191,36,.08); color: #fde68a; }
.chk.warn::before { background: var(--warn); }

.startbtn { width: 100%; display: flex; align-items: center; justify-content: center; gap: 12px; padding: 18px; border-radius: 16px; border: 0; cursor: pointer; font-size: 20px; font-weight: 800; color: #fff; background: linear-gradient(135deg, #10b981, #22d3ee); box-shadow: 0 16px 40px -18px rgba(16,185,129,.9); transition: transform .1s, filter .15s; position: relative; }
.startbtn small { position: absolute; right: 14px; font-size: 11px; font-weight: 700; opacity: .7; border: 1px solid rgba(255,255,255,.5); border-radius: 6px; padding: 1px 6px; }
.startbtn:hover { filter: brightness(1.08); }
.startbtn:active { transform: scale(.98); }
.startbtn .sb-ic { width: 0; height: 0; border-left: 16px solid #fff; border-top: 10px solid transparent; border-bottom: 10px solid transparent; }
.startbtn.running { background: linear-gradient(135deg, #ef4444, #f97316); box-shadow: 0 16px 40px -18px rgba(239,68,68,.9); }
.startbtn.running .sb-ic { width: 16px; height: 16px; border: 0; background: #fff; border-radius: 3px; }
.startbtn.waiting { background: linear-gradient(135deg, #f59e0b, #f97316); }
.startbtn:disabled { filter: grayscale(.8) brightness(.7); cursor: not-allowed; }
.stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; margin-top: 12px; }
.stats div { text-align: center; padding: 8px; border-radius: 12px; background: rgba(255,255,255,.03); }
.stats b { display: block; font-size: 20px; font-variant-numeric: tabular-nums; }
.stats small { color: var(--muted); font-size: 12px; }

.seg { display: grid; grid-template-columns: 1fr 1fr; background: var(--bg2); border-radius: 12px; padding: 4px; border: 1px solid var(--line); }
.seg button { border: 0; background: transparent; padding: 8px; border-radius: 9px; cursor: pointer; color: var(--muted); font-weight: 600; }
.seg button.is-on { background: var(--panel2); color: var(--txt); box-shadow: 0 2px 8px rgba(0,0,0,.3); }
.hint { color: var(--muted); font-size: 12.5px; margin: 8px 0 0; }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 12px; }
label { display: flex; flex-direction: column; gap: 4px; font-size: 12.5px; color: var(--muted); }
label small { font-size: 11px; opacity: .8; }
input, select { background: var(--bg2); border: 1px solid var(--line2); border-radius: 9px; padding: 7px 9px; outline: none; min-width: 0; color: var(--txt); }
input:focus, select:focus { border-color: var(--acc); }

.pts-head { display: flex; justify-content: space-between; align-items: center; }
.pts-head h3 { margin: 0; }
.badge { background: var(--panel2); border-radius: 999px; padding: 1px 8px; font-size: 12px; color: var(--txt); letter-spacing: 0; }
.pts { list-style: none; padding: 0; margin: 12px 0 0; display: grid; gap: 8px; }
.pt { border: 1px solid var(--line); border-radius: 12px; padding: 10px; background: var(--bg2); display: grid; gap: 8px; transition: border-color .15s; }
.pt.sel { border-color: var(--acc); box-shadow: 0 0 0 3px rgba(34,211,238,.12); }
.pt.off { opacity: .55; }
.pt.fire { border-color: var(--ok); }
.pt-row { display: flex; align-items: center; gap: 8px; }
.pt-num { width: 26px; height: 26px; border-radius: 50%; display: grid; place-items: center; font-weight: 800; font-size: 12px; color: #fff; flex: none; }
.pt-name { flex: 1; min-width: 0; background: transparent; border-color: transparent; padding: 4px 6px; font-weight: 600; }
.pt-name:hover { border-color: var(--line2); }
.pt-row .ib { width: 28px; height: 28px; border: 0; background: transparent; border-radius: 8px; cursor: pointer; color: var(--muted); flex: none; }
.pt-row .ib:hover { background: rgba(255,255,255,.06); color: var(--txt); }
.pt-row .ib.del:hover { color: var(--bad); }
.pt-f { display: grid; grid-template-columns: 1.1fr 1fr 1fr .8fr; gap: 6px; }
.pt-f label { font-size: 11px; }
.pt-f input, .pt-f select { padding: 5px 7px; font-size: 13px; }
.pt-xy { font-size: 11px; color: var(--muted); font-variant-numeric: tabular-nums; }
.sw { position: relative; width: 34px; height: 20px; flex: none; }
.sw input { opacity: 0; width: 0; height: 0; position: absolute; }
.sw span { position: absolute; inset: 0; border-radius: 999px; background: #3a4155; cursor: pointer; transition: background .15s; }
.sw span::after { content: ""; position: absolute; width: 14px; height: 14px; left: 3px; top: 3px; border-radius: 50%; background: #fff; transition: transform .15s; }
.sw input:checked + span { background: var(--ok); }
.sw input:checked + span::after { transform: translateX(14px); }
.empty { color: var(--muted); font-size: 13px; margin: 10px 0 0; }
.prof { display: flex; gap: 6px; }
.prof select { flex: 1; }

.toasts { position: fixed; right: 18px; bottom: 18px; display: grid; gap: 8px; z-index: 50; }
.toast { background: var(--panel2); border: 1px solid var(--line2); border-left: 4px solid var(--acc); padding: 10px 14px; border-radius: 10px; box-shadow: 0 16px 40px -12px rgba(0,0,0,.8); max-width: 360px; animation: tin .2s ease-out; }
.toast.bad { border-left-color: var(--bad); }
.toast.ok { border-left-color: var(--ok); }
@keyframes tin { from { opacity: 0; transform: translateY(8px); } }
.foot { text-align: center; color: var(--muted); font-size: 12px; padding: 14px; }
.foot a { color: var(--muted); }

@media (max-width: 980px) {
  .dev { grid-template-columns: 1fr; }
  .stage-col { position: static; }
  .stage-wrap { height: 70vh; }
}
@media (max-width: 560px) {
  main { padding: 12px; }
  .top { flex-wrap: wrap; padding: 10px 12px; }
  .devs { order: 3; flex-basis: 100%; }
  .w-card { padding: 22px 16px; }
  .code input { width: 40px; height: 52px; font-size: 24px; }
  .grid2 { grid-template-columns: 1fr; }
  .pt-f { grid-template-columns: 1fr 1fr; }
  .tool span { display: none; }
}