/* Farben und Schrift zentral ändern: an NAVTEX Online angelehnt. */
:root {
  --bg: #151611;
  --shell: #393a30;
  --panel: #2e3027;
  --border: #727567;
  --text: #e9e6ce;
  --muted: #c7c8b8;
  --green: #00ff00;
  --yellow: #e9de58;
  --black: #080c07;
  --blue: #8cabb7;
  --red: #ad504a;
  --lamp-off: #481714;
  --lamp-on: #ff3333;
  --sans: Helvetica, Arial, sans-serif;
  --mono: "Courier New", Courier, monospace;
}
/* Grundlayout und Seitenrahmen */
* {
  box-sizing: border-box;
}
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 19px/1.5 var(--sans);
}
.shell {
  max-width: 1280px;
  margin: 24px auto;
  padding: 24px;
  border: 1px solid var(--border);
  background: var(--shell);
  box-shadow: 0 8px 35px #0005;
}
/* Kopfzeile mit UTC-Uhr */
.topbar {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  border-bottom: 1px solid var(--border);
  padding-bottom: 22px;
}
.eyebrow {
  font-size: 13px;
  letter-spacing: 2px;
  margin: 0 0 8px;
  color: var(--muted);
}
h1 {
  font-size: clamp(27px, 3vw, 42px);
  line-height: 1.15;
  letter-spacing: 1px;
  margin: 0 0 8px;
}
h1 span {
  color: var(--green);
  font-weight: 400;
}
.topbar p:last-child {
  margin: 0;
  font-size: 17px;
}
.clock {
  min-width: 205px;
  align-self: center;
  text-align: right;
  font-size: 24px;
}
.clock small {
  display: block;
  font: 18px/2 var(--mono);
  color: var(--green);
}
/* Bereichsauswahl */
.tabs {
  display: flex;
  gap: 8px;
  margin: 20px 0;
}
.tabs button {
  flex: 1;
  background: #25271f;
  color: var(--text);
  border-color: var(--border);
}
.tabs .selected {
  background: var(--yellow);
  color: #16190e;
  border-color: var(--yellow);
}
/* Bedienfelder und gemeinsame Typografie */
.panel {
  padding: 20px;
  margin: 16px 0;
  border: 1px solid var(--border);
  background: var(--panel);
}
h2 {
  margin: 0 0 18px;
  font-size: 16px;
  letter-spacing: 0.7px;
}
h3 {
  color: var(--yellow);
  font-size: 21px;
  margin: 24px 0 8px;
}
.section-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 15px;
}
.section-head h2 {
  margin: 0;
}
.controls,
.training-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 24px;
}
label {
  display: block;
  font-size: 17px;
  font-weight: 600;
}
label span {
  display: block;
  color: var(--green);
  font: 22px var(--mono);
  margin: 7px 0 12px;
}
.hint {
  font-size: 15px;
  color: var(--muted);
  margin: 12px 0 0;
  font-weight: 400;
}
.check {
  display: flex;
  align-items: center;
  gap: 9px;
  font-size: 16px;
  font-weight: 400;
}
.check input {
  width: 20px;
  height: 20px;
  accent-color: var(--green);
}
input[type="range"] {
  width: 100%;
  height: 26px;
  accent-color: var(--text);
  cursor: pointer;
}
select,
input:not([type]),
textarea {
  width: 100%;
  background: #10150e;
  color: var(--green);
  border: 1px solid var(--border);
  padding: 11px;
  font: 18px/1.5 var(--sans);
  border-radius: 0;
}
select {
  margin-top: 8px;
  min-height: 50px;
}
textarea {
  resize: vertical;
  font: 23px/1.65 var(--mono);
  margin: 10px 0 0;
  min-height: 105px;
}
textarea::placeholder {
  color: #9baf94;
}
button {
  font: 700 15px/1.3 var(--sans);
  letter-spacing: 0.4px;
  padding: 14px 20px;
  min-height: 49px;
  cursor: pointer;
  border: 1px solid #939687;
  color: #191d18;
  background: var(--text);
  border-radius: 0;
}
button:hover:not(:disabled) {
  filter: brightness(1.13);
}
button:disabled {
  opacity: 0.4;
  cursor: default;
}
button.primary {
  background: var(--yellow);
  border: 2px solid var(--green);
  box-shadow: inset 0 0 0 2px var(--panel);
}
button.danger {
  background: var(--red);
  color: white;
}
.actions,
.transport {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 18px;
}
.transport .hint {
  margin: 0;
}
button.subtle {
  background: transparent;
  color: var(--text);
  padding: 8px 12px;
  font-size: 13px;
  min-height: 40px;
}
:focus-visible {
  outline: 3px solid var(--yellow);
  outline-offset: 4px;
}
/* Audioanzeige, rote Morselampe und Wiedergabesteuerung */
.monitor {
  padding: 20px;
  background: var(--black);
  border: 1px solid var(--border);
}
.monitor-top {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  color: var(--green);
  font: 15px var(--mono);
}
#lamp {
  display: inline-block;
  width: 10px;
  height: 10px;
  background: var(--lamp-off);
  border-radius: 50%;
  margin-right: 8px;
}
#lamp.on {
  background: var(--lamp-on);
  box-shadow: 0 0 12px var(--lamp-on);
}
.monitor-body {
  display: flex;
  gap: 28px;
  align-items: center;
  min-height: 114px;
}
#signal {
  color: var(--green);
  font: 44px var(--mono);
  min-width: 130px;
}
#status {
  font-size: 23px;
  margin: 0;
}
#detail {
  margin-top: 5px;
}
progress {
  display: block;
  width: 100%;
  height: 5px;
  accent-color: var(--green);
}
.monitor .transport button {
  padding: 9px 18px;
  min-height: 43px;
  background: var(--blue);
}
.monitor .transport .danger {
  background: var(--red);
}
/* Zeichenkarten und Lösungen */
.alphabet {
  display: grid;
  grid-template-columns: repeat(10, 1fr);
  gap: 8px;
  margin-top: 16px;
}
.alphabet button {
  padding: 9px 2px;
  background: #10150e;
  color: var(--green);
  min-height: 79px;
}
.alphabet b {
  font: 700 25px var(--sans);
  display: block;
}
.alphabet small {
  display: block;
  color: var(--text);
  font: 19px var(--mono);
  margin-top: 7px;
}
.alphabet.hide-patterns small {
  visibility: hidden;
}
details {
  margin-top: 20px;
}
summary {
  cursor: pointer;
  color: var(--text);
  font-size: 17px;
  padding: 8px 0;
}
.badge {
  font: 15px var(--mono);
  color: var(--yellow);
}
.result {
  margin-top: 20px;
  padding: 18px;
  border: 1px solid var(--border);
  background: var(--black);
  overflow-wrap: anywhere;
}
.result h3 {
  margin: 0 0 12px;
}
.solution {
  color: var(--green);
  font: 23px/1.65 var(--mono);
  white-space: pre-wrap;
}
.comparison {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 12px;
}
.comparison span {
  display: flex;
  flex-direction: column;
  min-width: 28px;
  text-align: center;
  font: 20px/1.5 var(--mono);
  background: #183115;
  color: var(--green);
  padding: 3px;
}
.comparison .error {
  background: #49251e;
  color: #ffcfaa;
}
/* Trainingsverlauf */
.table-wrap {
  overflow-x: auto;
}
table {
  width: 100%;
  border-collapse: collapse;
  font-size: 16px;
}
th,
td {
  text-align: left;
  padding: 12px 10px;
  border-bottom: 1px solid #646757;
}
th {
  color: var(--yellow);
  font-size: 14px;
}
.prose {
  max-width: 920px;
}
.prose p {
  margin: 8px 0 18px;
}
a {
  color: var(--yellow);
}
footer {
  font-size: 13px;
  color: var(--muted);
  padding: 10px 0 0;
  display: flex;

  gap: 12px;
}
[hidden] {
  display: none !important;
}
/* Anpassung an Tablets und schmale Bildschirme */
@media (max-width: 900px) {
  .shell {
    margin: 10px;
    padding: 16px;
  }
  .controls,
  .training-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .topbar {
    flex-wrap: wrap;
  }
  .clock {
    text-align: left;
    font-size: 20px;
  }
  .alphabet {
    grid-template-columns: repeat(7, 1fr);
  }
  .tabs button {
    padding: 12px 7px;
    font-size: 13px;
  }
  .section-head {
    flex-wrap: wrap;
  }
}
@media (max-width: 520px) {
  body {
    font-size: 18px;
  }
  .shell {
    margin: 0;
    border: 0;
    padding: 12px;
  }
  .panel,
  .monitor {
    padding: 16px;
  }
  .controls,
  .training-grid {
    gap: 18px 14px;
  }
  .alphabet {
    grid-template-columns: repeat(5, 1fr);
  }
  .monitor-top {
    font-size: 14px;
    flex-wrap: wrap;
  }
  .monitor-body {
    gap: 14px;
  }
  #signal {
    min-width: 75px;
    font-size: 32px;
  }
  #status {
    font-size: 19px;
  }
  .tabs {
    gap: 5px;
  }
  .tabs button {
    font-size: 12px;
  }
  footer {
    display: block;
  }
  .badge {
    font-size: 11px;
  }
  .actions button {
    flex-grow: 1;
  }
  label {
    font-size: 15px;
  }
}

/* Buchstabe oben, sein vollständiges Klangmuster darunter. */
#signal small {
  display: block;
  margin-top: 6px;
  color: var(--text);
  font: 24px/1.4 var(--mono);
  letter-spacing: 2px;
  white-space: nowrap;
}
@media (max-width: 520px) {
  #signal small {
    font-size: 19px;
    letter-spacing: 1px;
  }
  .monitor-body {
    flex-wrap: wrap;
    padding: 18px 0;
  }
}

/* Persönliches Profil: große Eingabe und gut erreichbare Vorleseoption. */
.profile-controls {
  display: flex;
  align-items: end;
  flex-wrap: wrap;
  gap: 18px 24px;
}
.profile-controls > label:first-child {
  flex: 1 1 280px;
  max-width: 460px;
}
#userName {
  width: 100%;
  min-height: 50px;
  margin-top: 8px;
  background: #10150e;
  color: var(--green);
  border: 1px solid var(--border);
  padding: 11px;
  font: 18px/1.5 var(--sans);
}
.profile-controls .check {
  min-height: 50px;
}
.encouragement {
  border-left: 4px solid var(--yellow);
  padding: 12px 16px;
  color: var(--yellow);
  background: #26291d;
  font: 22px/1.5 var(--sans);
}

/* Bluetooth-Hilfe: Pegel bewusst separat vom Morse-Tempo einstellbar. */
.bluetooth-controls {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px 36px;
}
.bluetooth-level {
  flex: 1 1 240px;
  max-width: 420px;
}
.bluetooth-level span {
  margin-bottom: 5px;
}