:root{
  --bg:#eef2f7;
  --panel:#fff;
  --ink:#172033;
  --muted:#64748b;
  --muted-on-tint:#475569;
  --line:#dbe3ed;
  --blue:#2563eb;
  --editor:#0f172a;
  --editor-ink:#e2e8f0;

  --ok:#047857;
  --ok-bg:#ecfdf5;
  --bad:#b91c1c;
  --bad-bg:#fef2f2;
  --warn:#92400e;
  --warn-bg:#fffbeb;
  --tip:#1e40af;
  --tip-bg:#eff6ff;

  --mono:ui-monospace,SFMono-Regular,Consolas,"Liberation Mono",monospace;
}

*{box-sizing:border-box}
[hidden]{display:none !important}

body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font:15px/1.55 Inter,system-ui,sans-serif;
}

.app{max-width:1600px;margin:auto;padding:20px}

.back{
  display:inline-block;
  margin-bottom:12px;
  color:#475569;
  font-size:13px;
  font-weight:650;
  text-decoration:none;
}
.back:hover{color:var(--blue)}

header,.panel{
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:17px;
  box-shadow:0 8px 25px #0f172a10;
}

header{
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:16px;
  padding:15px 18px;
  margin-bottom:17px;
}
header h1{margin:0;font-size:21px}
header p{margin:1px 0;color:var(--muted);font-size:13px}

nav{display:flex;gap:8px;flex-wrap:wrap;align-items:center}

button,.button{
  border:1px solid var(--line);
  border-radius:10px;
  background:#fff;
  padding:9px 13px;
  font:inherit;
  font-weight:750;
  cursor:pointer;
  color:var(--ink);
}
button:hover{border-color:#93c5fd}
button:disabled{cursor:default;opacity:.45}
button:disabled:hover{border-color:var(--line)}
button.small{padding:5px 10px;font-size:13px;border-radius:8px}
.primary{background:var(--blue);border-color:var(--blue);color:#fff}
.primary:hover{border-color:var(--blue)}

:focus-visible{outline:2px solid var(--blue);outline-offset:2px}
textarea:focus-visible,input:focus-visible{outline:2px solid #60a5fa;outline-offset:-2px}

.panel{overflow:hidden;display:flex;flex-direction:column;margin-bottom:17px}

.panel-head{
  min-height:55px;
  padding:10px 14px;
  border-bottom:1px solid var(--line);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:10px 12px;
  flex:none;
  flex-wrap:wrap;
}
.panel-head > strong{margin-right:auto}
.panel-head small{color:var(--muted)}
.head-actions{display:flex;align-items:center;gap:8px;flex-wrap:wrap}

.mini{
  position:relative;
  border:1px solid var(--line);
  border-radius:8px;
  padding:5px 10px;
  font-size:13px;
  font-weight:700;
  color:var(--ink);
  cursor:pointer;
}
.mini:hover{border-color:#93c5fd}
.mini:focus-within{outline:2px solid var(--blue);outline-offset:2px}
.mini input{position:absolute;width:1px;height:1px;opacity:0;pointer-events:none}

.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.hint{color:#475569;font-size:12.5px;margin:0}
.hint.pad{padding:8px 14px 12px}
.foot{text-align:center;margin-top:4px}

/* ---------- Einstellungen ---------- */

.options{padding:12px 16px;gap:10px}
.opt-row{display:flex;flex-wrap:wrap;align-items:center;gap:8px 14px}
.opt-group{display:flex;flex-wrap:wrap;align-items:center;gap:8px 16px}
.opt-label{font-size:13px;font-weight:700;color:#334155}
.dir-info{font-size:13px;color:#475569}

.viewswitch{display:flex;gap:0;flex-wrap:wrap}
.seg{
  border-radius:0;
  padding:6px 12px;
  font-size:13px;
  font-weight:700;
  color:#334155;
}
.seg + .seg{border-left:0}
.seg:first-child{border-radius:9px 0 0 9px}
.seg:last-child{border-radius:0 9px 9px 0}
.seg.is-active{background:var(--blue);border-color:var(--blue);color:#fff}
.seg.is-active:hover{border-color:var(--blue)}

.select{display:flex;align-items:center;gap:7px;font-size:13px;color:#334155;font-weight:650}
select{
  font:inherit;
  font-weight:650;
  color:var(--ink);
  border:1px solid var(--line);
  border-radius:8px;
  background:#fff;
  padding:4px 8px;
  cursor:pointer;
  max-width:100%;
}
.sample-pick select{padding:8px 10px;border-radius:10px;font-weight:750}
.checkbox{display:flex;align-items:center;gap:6px;cursor:pointer;font-size:13px;color:#334155;font-weight:650}
.checkbox input{width:15px;height:15px;accent-color:var(--blue);margin:0}

/* ---------- Meldungen ---------- */
.messages:empty{display:none}
.messages{padding:0 14px 12px;display:flex;flex-direction:column;gap:6px}
.msg{display:grid;grid-template-columns:auto minmax(0,1fr);gap:2px 8px;padding:8px 11px;border-radius:9px;font-size:13px;line-height:1.45;background:var(--bad-bg);color:var(--bad)}
.msg .icon{font-weight:800}
.msg .where{font-weight:750;margin-right:6px;font-variant-numeric:tabular-nums}
.msg .tip{grid-column:2;color:#7f1d1d}
.msg .acts{grid-column:2;display:flex;gap:6px;flex-wrap:wrap;margin-top:4px}
.msg.is-warn{background:var(--warn-bg);color:var(--warn)}
.msg.is-info{background:#f1f5f9;color:#334155}
.notice{padding:9px 14px;border-bottom:1px solid var(--line);background:var(--warn-bg);color:var(--warn);font-size:13px}

/* ---------- Eingabe ---------- */
.input-panel{padding:14px 16px 4px}
.input-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px 12px}
.num-label{font-weight:800;font-size:15px}
.num{
  flex:1 1 420px;min-width:0;
  font:600 20px/1.3 var(--mono);
  color:var(--editor-ink);background:var(--editor);caret-color:#f8fafc;
  border:2px solid var(--editor);border-radius:12px;padding:11px 14px;
}
.num::placeholder{color:#94a3b8;font-weight:400;font-size:15px}
.num.is-bad{border-color:#f87171}
.num:focus-visible{outline:2px solid #60a5fa;outline-offset:2px}
.base-num{width:64px;font:inherit;font-weight:650;border:1px solid var(--line);border-radius:8px;padding:4px 6px;color:var(--ink);background:#fff}
.detect{margin:9px 2px 10px;font-size:13.5px;color:#334155;font-weight:600;min-height:1.2em}

/* ---------- Darstellungen ---------- */
.opts{gap:8px 16px}
.reps{display:flex;flex-direction:column}
.rep{display:grid;grid-template-columns:150px minmax(0,1fr) auto;align-items:start;gap:4px 12px;padding:9px 14px;border-bottom:1px solid #eef2f6}
.rep-label{font-weight:750;font-size:14px;padding-top:9px;color:#334155}
.rep-base{display:flex;align-items:center;gap:7px;padding-top:4px}
.rep-val{
  width:100%;min-height:40px;resize:none;overflow:hidden;
  font:500 15px/1.5 var(--mono);color:var(--editor-ink);background:var(--editor);caret-color:#f8fafc;
  border:0;border-radius:10px;padding:8px 12px;word-break:break-all;white-space:pre-wrap;
  font-variant-ligatures:none;
}
.rep-val:focus-visible{outline:2px solid #60a5fa;outline-offset:2px}
.rep .copy{margin-top:6px}
.rep-msg{grid-column:2 / -1;margin:0;font-size:12.5px;color:#475569}
.rep-msg.is-bad{color:var(--bad);font-weight:650}
.rep-msg.is-warn{color:var(--warn)}
.byte-in .rep-msg,.calc-b .rep-msg{flex-basis:100%}

/* ---------- Werkzeuge ---------- */
.tools-head{min-height:50px}
.width-bar{display:flex;flex-wrap:wrap;align-items:center;gap:8px 14px;padding:10px 14px;border-bottom:1px solid var(--line);background:#f8fafc}
.tabpanel{padding-bottom:6px}
.empty-note{padding:18px 14px}
.sub-block,.block{display:block}
.sub{color:#475569;font-size:12.5px;font-weight:500}
.wrap{word-break:break-all;white-space:pre-wrap}
.mono{font-family:var(--mono);font-size:13px}
.copy-inline{padding:1px 8px;font-size:12px;border-radius:7px;vertical-align:baseline}
button.is-done{border-color:#86efac;color:var(--ok)}

.fields{display:grid;align-content:start;align-self:start;grid-template-columns:minmax(150px,220px) minmax(0,1fr);gap:5px 14px;margin:0;font-size:13.5px}
.fields dt{color:#475569;font-weight:650}
.fields dd{margin:0;min-width:0;word-break:break-word}
.fields.tight{grid-template-columns:minmax(120px,170px) minmax(0,1fr)}
.state{font-size:11.5px;font-weight:800;border-radius:999px;padding:1px 8px;white-space:nowrap}
.state.ok{background:var(--ok-bg);color:var(--ok)}
.state.bad{background:var(--bad-bg);color:var(--bad)}
.state.info{background:#f1f5f9;color:#334155}

/* Bits */
.bitgrid{display:flex;flex-wrap:wrap;gap:10px 14px;padding:14px 14px 4px;justify-content:flex-start}
.byte{display:flex;flex-direction:column;align-items:center;gap:3px}
.byte-cap{font-size:11px;color:#475569;font-weight:700;font-variant-numeric:tabular-nums}
.bits{display:flex;gap:2px}
.bit{
  width:28px;height:34px;padding:0;border-radius:7px;
  font:700 15px/1 var(--mono);color:#334155;background:#f1f5f9;border:1px solid var(--line);
}
.bit.nib{margin-right:5px}
.bit.on{background:var(--blue);border-color:var(--blue);color:#fff}
.bit.sign{box-shadow:inset 0 -3px 0 #f59e0b}
.bit.on.sign{background:#b45309;border-color:#b45309}
.bit:hover{border-color:#93c5fd}
.cols{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.25fr);gap:18px;padding:12px 14px}
.tbl-wrap{overflow-x:auto;min-width:0}
.tbl{border-collapse:collapse;width:100%;font-size:13px}
.tbl caption{text-align:left;font-weight:750;font-size:14px;padding:0 0 6px}
.tbl th,.tbl td{border-bottom:1px solid #eef2f6;padding:6px 8px;text-align:left;vertical-align:top}
.tbl thead th{font-size:12px;color:#475569;font-weight:750;border-bottom:1px solid var(--line);white-space:nowrap}
.tbl tbody th{font-weight:600}
.tbl .nr{font-variant-numeric:tabular-nums;font-family:var(--mono);font-size:12.5px;word-break:break-all}
.tbl tr.nofit th b{color:#475569}
.tbl tr.is-current{background:#eff6ff}
.tbl tr.is-main th{color:var(--blue)}

/* Bytes & Float */
.sub > h2,section.sub h2{font-size:15px;margin:0;padding:14px 14px 8px}
section.sub{border-bottom:1px solid var(--line);padding-bottom:8px}
section.sub:last-child{border-bottom:0}
section.sub .tbl-wrap{padding:0 14px}
.byte-in,.float-in{display:flex;flex-wrap:wrap;align-items:center;gap:8px 12px;padding:10px 14px}
.byte-in input,.float-in input,.calc-b input{
  flex:1 1 260px;min-width:0;font:500 14px/1.4 var(--mono);color:var(--ink);background:#fff;
  border:1px solid var(--line);border-radius:9px;padding:7px 10px;
}
.float-in input.is-bad{border-color:#f87171}
.pattern-float{padding:0 14px}
.pattern-float:empty{display:none}
.pf-line{margin:4px 0 6px;padding:10px 12px;border-radius:10px;background:#eff6ff;color:#1e3a8a;font-size:14px}
.pf-line .big{font-size:17px;font-family:var(--mono)}
.floats{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:12px;padding:4px 14px 10px}
.fcard{border:1px solid var(--line);border-radius:13px;padding:12px;min-width:0}
.fhead{display:flex;flex-wrap:wrap;align-items:baseline;gap:4px 10px;margin-bottom:8px}
.fhead h3{margin:0;font-size:14.5px}
.fbits{font:600 13px/1.6 var(--mono);word-break:break-all;margin-bottom:10px;display:flex;flex-wrap:wrap;gap:0 6px}
.fbits .fs{color:#b91c1c}
.fbits .fe{color:#047857}
.fbits .fm{color:#1d4ed8}

/* Karten */
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(360px,1fr));gap:12px;padding:14px}
.card{border:1px solid var(--line);border-radius:13px;padding:12px 14px;min-width:0}
.card h2{margin:0 0 10px;font-size:15px;display:flex;flex-wrap:wrap;gap:4px 10px;align-items:baseline}
.card-sub{font:600 13px var(--mono);color:#475569}
.glyph{font-size:28px;line-height:1;vertical-align:middle}
.na{grid-column:1 / -1}

/* Bit-Rechner */
.calc-top{display:flex;flex-direction:column;gap:10px;padding:14px 14px 4px}
.calc-a{font-size:14px}
.calc-a code{font-size:14px;font-weight:650}
.ops{display:flex;flex-wrap:wrap;gap:8px 16px}
.opgroup{display:flex;align-items:center;gap:7px;flex-wrap:wrap}
.opg-label{font-size:12px;font-weight:750;color:#475569}
.calc-b{display:flex;flex-wrap:wrap;align-items:center;gap:6px 10px}
.op-desc{margin:6px 14px;font-size:13px;color:#334155}
.calc-grid{padding:4px 14px;overflow-x:auto}
.cg{display:flex;flex-wrap:wrap;gap:10px 12px;align-items:flex-start}
.cg-labels,.cg-byte{display:flex;flex-direction:column;gap:2px}
.cg-cap{font-size:11px;color:#475569;font-weight:700;height:16px;text-align:center;font-variant-numeric:tabular-nums}
.cg-l{height:26px;line-height:26px;font-weight:750;font-size:12.5px;color:#334155;min-width:44px}
.cg-row{display:flex;gap:2px}
.cg-c{width:22px;height:26px;padding:0;display:inline-flex;align-items:center;justify-content:center;border-radius:6px;font:600 13px var(--mono);color:#475569;background:#f8fafc;border:1px solid #eef2f6}
.cg-c.on{color:#0f172a;background:#e2e8f0}
.cg-row.res{margin-top:4px}
.cg-row.res .cg-c{border-color:var(--line);background:#fff;color:#334155}
.cg-row.res .cg-c.on{background:var(--blue);border-color:var(--blue);color:#fff}
.cg-row.res .cg-c.chg{box-shadow:0 0 0 2px #facc15}
.calc-grid .hint{margin-top:8px}
.bit-explain{margin:6px 14px;font-size:13.5px;font-weight:650;color:#1e3a8a;min-height:1.2em}
.calc-notes{display:flex;flex-direction:column;gap:6px;padding:0 14px}
.calc-notes:empty{display:none}
.calc-res{padding:10px 14px}
.calc-acts{display:flex;gap:8px;flex-wrap:wrap;padding:0 14px 12px}
.mask-row{display:flex;flex-wrap:wrap;align-items:center;gap:8px 12px;padding:0 14px 8px}

.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

@media(max-width:1000px){
  .cols{grid-template-columns:1fr}
}
@media(max-width:700px){
  .app{padding:12px}
  header{flex-direction:column;align-items:flex-start}
  .rep{grid-template-columns:minmax(0,1fr) auto}
  .rep-label,.rep-base{grid-column:1 / -1;padding-top:0}
  .rep-msg{grid-column:1 / -1}
  .fields,.fields.tight{grid-template-columns:1fr}
  .fields dt{margin-top:6px}
  .cards,.floats{grid-template-columns:1fr}
  .info-line{flex-basis:100%}
  .bit{width:24px;height:32px;font-size:14px}
  .num{font-size:17px}
}
.info-line{font-size:13px;color:#475569;margin-left:auto;font-variant-numeric:tabular-nums}
.cg-c.nib{margin-right:5px}
.allbases th,.allbases td{padding:3px 8px;vertical-align:baseline}
.allbases code{font-size:12.5px}
.card .fields{grid-template-columns:minmax(110px,160px) minmax(0,1fr)}

/* ---------- Tabs ---------- */
.tabs{display:flex;gap:4px;flex-wrap:wrap}
.tab{border:0;border-radius:9px;padding:7px 12px;font-size:14px;font-weight:700;color:#475569;background:transparent}
.tab:hover{background:#f1f5f9;color:var(--ink)}
.tab[aria-selected="true"]{background:#eff6ff;color:var(--blue)}
.tabpanel:focus-visible{outline:2px solid var(--blue);outline-offset:-2px}
.table-bar{display:flex;flex-wrap:wrap;align-items:center;gap:8px 12px;padding:10px 14px;border-bottom:1px solid var(--line)}