/* Netz-Trainer (ap1.dnsdev.tech/netz/) – baut auf style.css auf */

.mast.compact h1 { font-size: clamp(46px, 10vw, 132px); line-height: 0.92; }
.mast-side { display: grid; gap: 6px; justify-items: start; }
@media (min-width: 720px) { .mast-side { justify-items: end; } }
.mast-side .lang { margin-left: -6px; }
@media (min-width: 720px) { .mast-side .lang { margin: 0 -6px 0 0; } }

/* Modus-Reiter */
.modes {
  display: flex;
  flex-wrap: wrap;
  gap: 0 28px;
  border-bottom: 1.5px solid var(--rule);
}
.modes button {
  font: 13px/1.4 var(--mono);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--soft);
  background: none;
  border: 0;
  border-bottom: 3px solid transparent;
  padding: 18px 0 13px;
  cursor: pointer;
}
.modes button:hover { color: var(--ink); }
@media (max-width: 479px) {
  .modes { gap: 0 16px; }
  .modes button { font-size: 12px; letter-spacing: 0.03em; }
  .task .field input { font-size: 17px; }
}
.modes button[aria-selected="true"] { color: var(--ink); border-bottom-color: var(--accent); }

/* Aufgabe */
.task { padding: 32px 0 44px; border-bottom: 1px solid var(--hair); min-height: 60vh; }
.task-head { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 6px 20px; margin-bottom: 22px; }
.task .ask { margin: 0 0 10px; font-size: 19px; max-width: 60ch; }
.task .ask code, .steps code { font: 0.92em var(--mono); background: var(--hair); padding: 1px 5px; overflow-wrap: anywhere; }
.prompt {
  margin: 0 0 30px;
  font: 700 clamp(30px, 6.5vw, 72px)/1.05 var(--grot);
  letter-spacing: -0.03em;
  overflow-wrap: anywhere;
}
.prompt.v6 { font: 600 clamp(17px, 3.4vw, 34px)/1.25 var(--mono); letter-spacing: 0; }

.netlist { list-style: none; margin: 8px 0 30px; padding: 0; display: grid; gap: 4px; }
.netlist li { font: 700 clamp(22px, 4vw, 40px)/1.15 var(--grot); letter-spacing: -0.02em; }

/* Eingabefelder */
.fields { display: grid; gap: 22px 28px; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); }
.field { display: grid; gap: 6px; align-content: start; }
.field.wide { grid-column: 1 / -1; }
.field input {
  width: 100%;
  font: 20px/1.3 var(--mono);
  color: var(--ink);
  background: transparent;
  border: 0;
  border-bottom: 1.5px solid var(--rule);
  border-radius: 0;
  padding: 8px 0 7px;
}
.field input:focus { outline: none; border-bottom: 3px solid var(--accent); padding-bottom: 5.5px; }
.field input.ok { border-bottom-color: var(--ok); }
.field input.bad { border-bottom-color: var(--off); }
.fb { min-height: 1.4em; font: 13px/1.4 var(--mono); }
.good { color: var(--ok); }
.badmsg { color: var(--off); }

/* VLSM: eine Zeile je Abteilung */
.groups { border-top: 1px solid var(--hair); }
.vrow {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px 20px;
  padding: 18px 0 8px;
  border-bottom: 1px solid var(--hair);
}
.vrow .dept { grid-column: 1 / -1; display: flex; gap: 12px; align-items: baseline; flex-wrap: wrap; }
.vrow .dept strong { font-size: 21px; letter-spacing: -0.01em; }
.vrow .field:nth-child(2) { grid-column: 1 / -1; max-width: 120px; }
@media (min-width: 820px) {
  .vrow { grid-template-columns: minmax(170px, 1.1fr) 100px 1fr 1fr; align-items: start; }
  .vrow .dept { grid-column: auto; display: grid; gap: 2px; padding-top: 22px; }
  .vrow .field:nth-child(2) { grid-column: auto; max-width: none; }
}

/* Knöpfe */
.actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 30px; }
.btn {
  font: 600 15px/1 var(--grot);
  color: var(--ink);
  background: none;
  border: 1.5px solid var(--rule);
  padding: 13px 18px;
  cursor: pointer;
}
.btn.primary { background: var(--ink); color: var(--paper); }
.btn:hover { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn:focus-visible, .modes button:focus-visible, .linkbtn:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
.result { min-height: 1.5em; margin: 16px 0 0; font: 15px/1.5 var(--mono); }

/* Lösungsweg */
.solution { margin-top: 30px; padding-top: 22px; border-top: 1.5px solid var(--rule); }
.solution h2 { margin: 0 0 18px; font: 12px/1.4 var(--mono); text-transform: uppercase; letter-spacing: 0.08em; color: var(--soft); font-weight: 400; }
.solution .steps li { font-size: 17px; }
.steps li.plain { counter-increment: none; border-top: 0; padding-top: 0; }
.steps li.plain::before { content: ""; }
.binlist { list-style: none; margin: 0; padding: 0; display: grid; gap: 6px; font-size: 16px; }
.solwrap { overflow-x: auto; }
.sol { border-collapse: collapse; font: 14px/1.4 var(--mono); min-width: 560px; }
.sol th { text-align: left; font-weight: 400; color: var(--soft); text-transform: uppercase; font-size: 11px; letter-spacing: 0.08em; }
.sol th, .sol td { padding: 7px 18px 7px 0; border-bottom: 1px solid var(--hair); white-space: nowrap; }

/* Fußzeile */
.linkbtn {
  font: inherit;
  letter-spacing: inherit;
  text-transform: inherit;
  color: inherit;
  background: none;
  border: 0;
  padding: 0;
  cursor: pointer;
  text-decoration: underline;
  text-underline-offset: 3px;
}
.linkbtn:hover { color: var(--accent); }