:root {
  --bg: #f4f1ea;
  --card: #ffffff;
  --card-2: #ece7dc;
  --line: rgba(6, 16, 28, 0.12);
  --text: #0b1726;
  --text-2: #43505f;
  --text-3: #6b7684;
  --brass: #9a7433;
  --brass-soft: rgba(154, 116, 51, 0.12);
  --sea: #0f8a80;
  --sea-soft: rgba(15, 138, 128, 0.12);
  --ok: #1f8a4c;
  --bad: #c43b3b;
  --flag-bg: #e3ddd0;
  --serif: 'Fraunces', Georgia, serif;
  --mono: 'JetBrains Mono', ui-monospace, monospace;
  --radius: 14px;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #06101c;
    --card: #0d1b2c;
    --card-2: #13243a;
    --line: rgba(190, 215, 255, 0.1);
    --text: #f2f5f9;
    --text-2: #b4c0cf;
    --text-3: #7d8a9b;
    --brass: #d4b47c;
    --brass-soft: rgba(212, 180, 124, 0.14);
    --sea: #4fd1c5;
    --sea-soft: rgba(79, 209, 197, 0.14);
    --ok: #5fd38d;
    --bad: #fc6d6d;
    --flag-bg: #1a2c44;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; margin: 0; }
html { -webkit-text-size-adjust: 100%; }
body {
  background: var(--bg);
  color: var(--text);
  font: 16px/1.5 'Inter', system-ui, sans-serif;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
a { color: var(--sea); }
button, input { font: inherit; color: inherit; }
img { display: block; }

/* Kopfzeile */
.topbar {
  position: sticky; top: 0; z-index: 5;
  display: flex; align-items: center; gap: 1.5rem; flex-wrap: wrap;
  padding: 0.8rem max(16px, env(safe-area-inset-left));
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.brand { font-family: var(--serif); font-size: 1.3rem; text-decoration: none; color: var(--text); }
.brand span { color: var(--brass); font-style: italic; }
#nav { display: flex; gap: 0.25rem; overflow-x: auto; scrollbar-width: none; }
#nav a {
  padding: 0.35rem 0.75rem; border-radius: 999px; text-decoration: none;
  color: var(--text-2); font-size: 0.92rem; white-space: nowrap;
}
#nav a[aria-current="true"] { background: var(--sea-soft); color: var(--sea); }
.lang {
  margin-left: auto; border: 1px solid var(--line); background: none; border-radius: 999px;
  padding: 0.3rem 0.8rem; font-size: 0.85rem; color: var(--text-2); cursor: pointer;
}
.lang:hover { border-color: var(--sea); color: var(--sea); }

main { width: 100%; max-width: 960px; margin: 0 auto; padding: 1.5rem 16px 3rem; flex: 1; }
.foot { padding: 1.5rem 16px; text-align: center; font-size: 0.8rem; color: var(--text-3); border-top: 1px solid var(--line); }

/* Startseite */
.intro { padding: 2rem 0 2.5rem; }
.kicker { font-family: var(--mono); font-size: 0.75rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--brass); margin-bottom: 1rem; }
.intro h1 { font-family: var(--serif); font-weight: 300; font-size: clamp(2.4rem, 7vw, 4rem); line-height: 1.05; letter-spacing: -0.02em; }
.intro h1 em { color: var(--brass); }
.lede { color: var(--text-2); font-size: 1.1rem; max-width: 34rem; margin-top: 1rem; }

.tiles { display: grid; gap: 1rem; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); }
.tile {
  display: flex; gap: 1rem; align-items: flex-start; padding: 1.2rem;
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  text-decoration: none; color: inherit; transition: transform 0.15s, border-color 0.15s;
}
.tile:hover { transform: translateY(-2px); border-color: var(--sea); }
.tile h2 { font-family: var(--serif); font-weight: 400; font-size: 1.35rem; }
.tile p { color: var(--text-2); font-size: 0.9rem; margin: 0.2rem 0 0.8rem; }
.tile-icon { width: 52px; height: 52px; object-fit: contain; flex: none; }
.tile-icon.glyph {
  display: grid; place-items: center; border-radius: 10px; background: var(--brass-soft);
  color: var(--brass); font-family: var(--mono); font-size: 1.4rem; font-weight: 500;
}

/* Fortschrittsbalken */
.mastery { display: inline-flex; align-items: center; gap: 0.5rem; font-family: var(--mono); font-size: 0.75rem; color: var(--text-3); }
.mastery .bar { width: 90px; height: 6px; border-radius: 3px; background: var(--card-2); overflow: hidden; }
.mastery .bar span { display: block; height: 100%; background: var(--sea); border-radius: 3px; transition: width 0.3s; }

/* Modulkopf und Werkzeugleisten */
.module-head { display: flex; align-items: center; justify-content: space-between; gap: 1rem; flex-wrap: wrap; margin-bottom: 1rem; }
.module-head h1 { font-family: var(--serif); font-weight: 300; font-size: 2rem; }
.toolbar { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-bottom: 1.25rem; }
h2 { font-family: var(--serif); font-weight: 400; font-size: 1.2rem; margin: 1.5rem 0 0.75rem; }

.segmented {
  display: inline-flex; flex-wrap: wrap; gap: 2px; padding: 3px;
  background: var(--card-2); border-radius: 10px; max-width: 100%;
}
.segmented button {
  border: 0; background: none; padding: 0.4rem 0.8rem; border-radius: 8px;
  font-size: 0.88rem; color: var(--text-2); cursor: pointer;
}
.segmented button[aria-selected="true"] { background: var(--card); color: var(--text); box-shadow: 0 1px 3px rgba(0, 0, 0, 0.15); }

button.primary, .row button, .quiz-next {
  border: 1px solid var(--line); background: var(--card); padding: 0.55rem 1.1rem;
  border-radius: 10px; cursor: pointer;
}
button.primary { background: var(--sea); border-color: var(--sea); color: #04131a; font-weight: 600; }
button.link { background: none; border: 0; color: var(--text-3); text-decoration: underline; cursor: pointer; margin-top: 2rem; font-size: 0.85rem; }
.row { display: flex; gap: 0.5rem; justify-content: center; flex-wrap: wrap; margin: 1rem 0; }
.hint { color: var(--text-3); font-size: 0.85rem; margin-top: 1rem; }

/* Flaggen */
.flag { width: 100%; height: 72px; object-fit: contain; }
.flag.large { height: 160px; }
.flag.nation { width: 100%; aspect-ratio: 4 / 3; height: auto; object-fit: contain; border-radius: 4px; box-shadow: 0 0 0 1px var(--line); }
.flag.nation.large { width: min(280px, 80vw); }

.card-grid { display: grid; gap: 0.75rem; grid-template-columns: repeat(auto-fill, minmax(120px, 1fr)); }
.card-grid.nations { grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); }
.flag-card {
  display: flex; flex-direction: column; align-items: center; gap: 0.5rem; padding: 0.9rem 0.6rem 0.7rem;
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); cursor: pointer;
  text-align: center;
}
figure.flag-card { cursor: default; }
.flag-card:hover { border-color: var(--sea); }
.flag-card-label { font-size: 0.85rem; color: var(--text-2); line-height: 1.25; }
.box-dots { display: flex; gap: 3px; }
.box-dots i { width: 6px; height: 6px; border-radius: 50%; background: color-mix(in srgb, var(--text) 18%, transparent); }
.box-dots i.on { background: var(--sea); }

.search {
  width: 100%; padding: 0.6rem 0.9rem; margin-bottom: 1rem; border-radius: 10px;
  border: 1px solid var(--line); background: var(--card);
}

.flag-detail { display: flex; gap: 1.25rem; align-items: center; text-align: left; }
.flag-detail > img.flag { width: 120px; flex: none; }
.flag-detail .flag.large { width: 160px; height: 160px; }
.flag-detail h3 { font-family: var(--serif); font-weight: 400; font-size: 1.3rem; margin-bottom: 0.3rem; }
.flag-detail p { color: var(--text-2); }
@media (max-width: 520px) {
  .flag-detail { flex-direction: column; text-align: center; }
}

dialog.sheet {
  border: 1px solid var(--line); border-radius: var(--radius); background: var(--card); color: var(--text);
  padding: 1.5rem; width: min(520px, calc(100vw - 32px)); margin: auto;
}
dialog.sheet::backdrop { background: rgba(0, 0, 0, 0.5); }
dialog.sheet form { margin-top: 1.25rem; text-align: right; }

.morse-chip {
  display: inline-flex; gap: 0.5rem; align-items: center; margin-top: 0.75rem;
  border: 1px solid var(--line); background: var(--brass-soft); color: var(--brass);
  border-radius: 999px; padding: 0.3rem 0.8rem; font-family: var(--mono); font-size: 1.1rem; cursor: pointer;
}

/* Quiz */
.quiz { display: flex; flex-direction: column; align-items: center; }
.quiz-stats { display: flex; gap: 1.25rem; flex-wrap: wrap; justify-content: center; font-family: var(--mono); font-size: 0.8rem; color: var(--text-3); margin-bottom: 1rem; }
.prompt { display: flex; flex-direction: column; align-items: center; gap: 0.75rem; text-align: center; margin-bottom: 1.5rem; }
.prompt p { color: var(--text-2); }
.big-label { font-family: var(--serif); font-size: 4.5rem; line-height: 1; }
.big-label.word { font-size: clamp(2rem, 6vw, 3rem); }
.big-label.code { font-family: var(--mono); font-size: clamp(2.5rem, 10vw, 4rem); letter-spacing: 0.15em; color: var(--brass); min-height: 1em; text-align: center; }

.quiz-options { display: grid; gap: 0.6rem; width: 100%; max-width: 640px; grid-template-columns: repeat(2, 1fr); }
.quiz-options.long { grid-template-columns: 1fr; }
.option {
  padding: 0.85rem 1rem; border-radius: var(--radius); border: 1px solid var(--line);
  background: var(--card); cursor: pointer; min-height: 3.2rem; text-align: center;
}
.quiz-options.long .option { text-align: left; }
.quiz-options.flags .option { display: grid; place-items: center; padding: 1rem; }
.quiz-options.flags .flag { height: 90px; }
.option:not(:disabled):hover { border-color: var(--sea); }
.option.right { border-color: var(--ok); background: color-mix(in srgb, var(--ok) 15%, var(--card)); }
.option.wrong { border-color: var(--bad); background: color-mix(in srgb, var(--bad) 15%, var(--card)); }
.option:disabled { cursor: default; }

.quiz-feedback { margin: 1.25rem 0 0.5rem; min-height: 1.5rem; display: flex; flex-direction: column; align-items: center; gap: 0.75rem; text-align: center; max-width: 640px; }
.ok { color: var(--ok); }
.bad { color: var(--bad); }
.quiz-next { margin-top: 0.5rem; }

/* Morsen */
.settings { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 0.6rem 1rem; margin-bottom: 1.25rem; }
.settings summary { cursor: pointer; color: var(--text-2); font-size: 0.9rem; }
.settings-grid { display: grid; gap: 0.75rem 1.5rem; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); margin-top: 0.75rem; }
.setting { display: grid; grid-template-columns: 1fr auto; gap: 0.2rem 0.75rem; font-size: 0.85rem; color: var(--text-2); }
.setting input { grid-column: 1 / -1; accent-color: var(--sea); }
.setting output { font-family: var(--mono); color: var(--text); }

.morse-table { display: grid; gap: 0.5rem; grid-template-columns: repeat(auto-fill, minmax(96px, 1fr)); }
.morse-table.wide { grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); }
.morse-cell {
  display: flex; flex-direction: column; align-items: center; gap: 0.15rem; padding: 0.6rem 0.4rem;
  background: var(--card); border: 1px solid var(--line); border-radius: 10px; cursor: pointer;
}
.morse-cell:hover { border-color: var(--sea); }
.morse-cell .ch { font-family: var(--serif); font-size: 1.5rem; }
.morse-cell .code { font-family: var(--mono); color: var(--brass); letter-spacing: 0.1em; }
.morse-cell .note { font-size: 0.75rem; color: var(--text-3); }

.level { display: flex; flex-direction: column; align-items: center; gap: 0.5rem; margin-bottom: 1rem; font-size: 0.9rem; color: var(--text-2); }
.level input { accent-color: var(--sea); vertical-align: middle; width: 200px; }
.level-chars { display: flex; flex-wrap: wrap; gap: 4px; justify-content: center; }
kbd { font-family: var(--mono); font-size: 0.8rem; padding: 0.1rem 0.4rem; border-radius: 5px; background: var(--card-2); }
.morse-keys { display: grid; grid-template-columns: repeat(auto-fill, minmax(48px, 1fr)); gap: 0.4rem; width: 100%; max-width: 640px; margin: 0 auto; }
.morse-keys .key { padding: 0.7rem 0; border-radius: 8px; border: 1px solid var(--line); background: var(--card); font-family: var(--mono); font-size: 1.1rem; cursor: pointer; }
.morse-keys .key:active { background: var(--sea-soft); }
.morse-prompt { margin-bottom: 0.5rem; }
.code-inline { font-family: var(--mono); color: var(--brass); }
main .quiz-feedback { margin-left: auto; margin-right: auto; }

.morse-key {
  display: block; margin: 1.5rem auto; width: 160px; height: 160px; border-radius: 50%;
  border: 2px solid var(--brass); background: var(--brass-soft); color: var(--brass);
  font-family: var(--mono); font-size: 1rem; letter-spacing: 0.1em; text-transform: uppercase;
  cursor: pointer; user-select: none; -webkit-user-select: none; touch-action: none;
  transition: transform 0.05s;
}
.morse-key.down { transform: scale(0.96); background: var(--brass); color: var(--bg); }
.send-out { min-height: 2rem; text-align: center; font-family: var(--mono); font-size: 1.1rem; }
.send-text { color: var(--text); margin-right: 0.5rem; }

/* Handy: Sprachknopf neben dem Logo, Navigation in eigener Zeile */
@media (max-width: 640px) {
  .topbar { gap: 0.6rem 1rem; }
  .lang { order: 2; }
  #nav { order: 3; width: 100%; }
}