/* US States trainer (/states). Builds on styles.css (brand tokens, buttons,
   hand map, flag zoom); colours come from the same light/dark tokens. */
body.us-page {
  height: 100dvh;
  overflow: hidden;
}

/* Mitternacht app bar in both themes (tokens switched in styles.css). */
.us-header {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 8px 16px;
  min-height: 52px;
  background: var(--night);
  color: var(--text);
  border-bottom: 1px solid var(--line);
  flex-shrink: 0;
}
.us-header .app-logo { margin-right: -4px; }
.us-header h1 { margin: 0; font-size: 18px; font-weight: 700; letter-spacing: 0.01em; white-space: nowrap; }
.us-back {
  color: var(--text-2);
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.02em;
  text-decoration: none;
  white-space: nowrap;
  padding: 4px 10px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  transition: border-color 0.15s ease, color 0.15s ease;
}
.us-back:hover { color: var(--text); border-color: var(--signal); }
.us-header-stats {
  display: flex;
  gap: 14px;
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--text-2);
  font-variant-numeric: tabular-nums;
}
.us-header-stats[hidden] { display: none; }
.us-streak { color: var(--accent-text); }
.us-header-actions { margin-left: auto; display: flex; align-items: center; gap: 10px; }
.us-header-actions [hidden] { display: none; }

.us-main {
  flex: 1 1 auto;
  min-height: 0;
  display: flex;
}
.us-panel {
  width: 380px;
  flex-shrink: 0;
  overflow-y: auto;
  background: var(--surface);
  border-right: 1px solid var(--line);
}
.us-view { padding: 18px 20px 28px; }
.us-view[hidden] { display: none; }
.us-map-panel {
  position: relative;
  flex: 1 1 auto;
  min-width: 0;
  display: flex;
}
.us-map-panel #map { position: absolute; inset: 0; }
.us-map-hint {
  position: absolute;
  left: 50%;
  bottom: 18px;
  transform: translateX(-50%);
  z-index: 4;
  margin: 0;
  padding: 7px 15px;
  border-radius: 999px;
  background: rgba(11, 16, 32, 0.88);
  color: var(--light);
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.02em;
  pointer-events: none;
  white-space: nowrap;
}
.us-map-hint[hidden] { display: none; }

/* ── Setup ── */
.us-setup h2 { margin: 0 0 6px; font-size: 23px; font-weight: 700; line-height: 1.2; }
.us-lead { margin: 0 0 18px; color: var(--text-2); font-size: 14px; line-height: 1.45; }
.us-hint { color: var(--text-3); font-size: 12px; line-height: 1.4; }
.us-field { border: 0; margin: 0 0 16px; padding: 0; }
.us-field[hidden] { display: none; }
.us-field legend {
  padding: 0;
  margin-bottom: 7px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-3);
}
.us-task-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.us-task {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 3px;
  padding: 10px 10px 10px 34px;
  border: 1px solid var(--line);
  border-radius: 10px;
  cursor: pointer;
  background: var(--surface-2);
  transition: border-color 0.15s, background 0.15s, box-shadow 0.15s;
}
.us-task input { position: absolute; left: 10px; top: 11px; margin: 0; accent-color: var(--signal); }
.us-task strong { font-size: 13px; font-weight: 700; color: var(--text); }
.us-task span { font-family: var(--font-body); font-size: 11.5px; font-weight: 400; color: var(--text-3); line-height: 1.3; }
.us-task:hover { border-color: var(--line-strong); }
.us-task:has(input:checked) { border-color: var(--signal); background: var(--surface); box-shadow: inset 0 0 0 1px var(--signal); }

.us-chips { display: flex; flex-wrap: wrap; gap: 6px; }
.us-chip { position: relative; cursor: pointer; }
.us-chip input { position: absolute; opacity: 0; pointer-events: none; }
.us-chip span {
  display: inline-block;
  padding: 6px 12px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--text-2);
  background: var(--surface);
  transition: all 0.15s;
}
.us-chip:hover span { border-color: var(--text-3); color: var(--text); }
/* Selected chips invert; Signalgelb stays reserved for the start button. */
.us-chip input:checked + span { background: var(--text); border-color: var(--text); color: var(--surface); }
.us-chip input:focus-visible + span { outline: 3px solid var(--signal); outline-offset: 2px; }

.us-options { display: flex; flex-direction: column; gap: 7px; margin: 4px 0 18px; }
.us-options .checkbox { font-size: 13px; }
.us-start { width: 100%; padding: 13px; font-size: 15px; letter-spacing: 0.05em; text-transform: uppercase; }
.us-start:disabled { opacity: 0.5; cursor: not-allowed; }
.us-error { color: var(--wrong); font-size: 13px; margin: 8px 0 0; }
.us-error[hidden] { display: none; }

.us-mastery { margin-top: 24px; padding-top: 18px; border-top: 1px solid var(--line); }
.us-mastery h3 { margin: 0 0 12px; font-size: 12px; font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase; color: var(--text-3); }
.us-mastery-row { display: grid; grid-template-columns: 70px 1fr 54px; align-items: center; gap: 8px; font-family: var(--font-display); font-weight: 600; font-size: 13px; margin-bottom: 7px; }
.us-mastery-bar { height: 8px; border-radius: 999px; background: var(--surface-3); overflow: hidden; }
.us-mastery-bar div { height: 100%; background: var(--correct-bright); border-radius: 999px; transition: width 0.3s; }
.us-mastery-count { text-align: right; font-variant-numeric: tabular-nums; color: var(--text-3); }
.us-mastery .us-hint { margin: 8px 0 10px; }

.us-explore {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 16px;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--surface-2);
}
.us-explore[hidden] { display: none; }
.us-explore strong { font-family: var(--font-display); font-weight: 700; }
.us-explore img { width: 96px; border-radius: 4px; border: 1px solid var(--line); cursor: zoom-in; }
.us-explore div { display: flex; flex-direction: column; gap: 2px; }
.us-explore-hint { margin: 10px 0 0; }
.us-explore-plate { width: 96px; margin-left: auto; border-radius: 4px; cursor: zoom-in; }
.us-explore-plate[hidden] { display: none; }
.us-plates-note { margin: 8px 0 0; }
.us-plates-note[hidden] { display: none; }
.us-credits { margin-top: 14px; font-size: 12px; color: var(--text-3); }
.us-credits summary { cursor: pointer; font-family: var(--font-display); font-weight: 600; }
.us-credits ul { margin: 6px 0 0; padding-left: 18px; line-height: 1.5; }
.us-credits a { color: inherit; }

/* ── Question ── */
.us-progress-track { height: 6px; border-radius: 999px; background: var(--surface-3); overflow: hidden; margin-bottom: 14px; }
.us-progress-fill { height: 100%; width: 0; background: var(--signal); border-radius: inherit; transition: width 0.3s; }
.us-task-prompt { margin: 0 0 12px; font-family: var(--font-display); font-size: 12px; font-weight: 700; color: var(--text-3); text-transform: uppercase; letter-spacing: 0.1em; }
.us-clue { display: flex; flex-direction: column; align-items: center; gap: 10px; margin-bottom: 14px; }
.us-clue-flag {
  max-width: 100%;
  max-height: 210px;
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 2px 4px rgba(11, 16, 32, 0.06), 0 12px 28px rgba(11, 16, 32, 0.12);
  background: var(--surface-2);
  cursor: zoom-in;
}
.us-clue-plate {
  max-width: 100%;
  max-height: 170px;
  border-radius: 8px;
  box-shadow: 0 2px 12px rgba(11, 16, 32, 0.14);
  cursor: zoom-in;
}
.us-plates-blurred .us-clue-plate { filter: blur(6px); cursor: default; }
.us-plates-blurred .us-choices-plate img { filter: blur(4.5px); }
.us-options .checkbox[hidden] { display: none; }
.us-clue-flag[hidden], .us-clue-plate[hidden], .us-clue-name[hidden], .us-clue-map[hidden] { display: none; }
.us-clue-name { margin: 0; font-family: var(--font-display); font-size: 28px; font-weight: 700; text-align: center; }
/* The hand map's focus blue (its legend-chip edge, dark enough for white text),
   so the clue matches the highlighted state. */
.us-clue-map {
  margin: 0;
  padding: 8px 14px;
  border-radius: 8px;
  background: #3a6aa3;
  color: #fff;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 14px;
}
body.dark-mode .us-clue-map { background: #2f5f98; }

.us-choices { display: grid; grid-template-columns: 1fr; gap: 8px; margin-bottom: 10px; }
.us-choices[hidden] { display: none; }
.us-choices-flag, .us-choices-plate { grid-template-columns: 1fr 1fr; }
button.us-choice {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 44px;
  padding: 8px 12px;
  text-align: left;
  background: var(--surface);
  border: 1px solid var(--line-strong);
  border-radius: 10px;
  font-size: 15px;
}
.us-choices-flag .us-choice, .us-choices-plate .us-choice { flex-direction: column; align-items: stretch; padding: 6px; gap: 4px; }
.us-choices-flag .us-choice img, .us-choices-plate .us-choice img { width: 100%; aspect-ratio: 3 / 2; object-fit: contain; background: var(--surface-2); border-radius: 4px; }
.us-choice-key {
  display: inline-grid;
  place-items: center;
  width: 22px;
  height: 22px;
  border-radius: 6px;
  background: var(--surface-3);
  color: var(--text-3);
  font-size: 12px;
  flex-shrink: 0;
}
.us-choices-flag .us-choice-key, .us-choices-plate .us-choice-key { width: 100%; height: 18px; background: none; }
button.us-choice:not(:disabled):hover { border-color: var(--signal); background: var(--surface-2); }
.us-choice:disabled { cursor: default; opacity: 0.6; }
button.us-choice.is-correct { opacity: 1; border-color: var(--correct); background: var(--correct-soft); box-shadow: 0 0 0 2px var(--correct) inset; }
button.us-choice.is-wrong { opacity: 1; border-color: var(--wrong); background: var(--wrong-soft); box-shadow: 0 0 0 2px var(--wrong) inset; }

.us-type-form { display: flex; gap: 8px; margin-bottom: 10px; }
.us-type-form[hidden] { display: none; }
.us-type-form input {
  flex: 1;
  min-width: 0;
  padding: 10px 12px;
  font-size: 16px;
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  background: var(--surface);
  color: var(--text);
}
.us-type-form input:focus { outline: none; border-color: var(--signal); box-shadow: 0 0 0 3px color-mix(in srgb, var(--signal) 22%, transparent); }

.us-question-actions { display: flex; justify-content: center; }
.us-question-actions [hidden] { display: none; }

.us-feedback {
  margin-top: 12px;
  padding: 14px;
  border-radius: 12px;
  border: 1px solid var(--line);
  border-left-width: 4px;
  background: var(--surface-2);
}
.us-feedback[hidden] { display: none; }
.us-feedback[data-result="correct"] { border-color: var(--line); border-left-color: var(--correct); }
.us-feedback[data-result="wrong"] { border-color: var(--line); border-left-color: var(--wrong); }
.us-feedback-title { margin: 0 0 10px; font-family: var(--font-display); font-size: 17px; font-weight: 700; }
/* Last answer kept under the next question: quieter, no continue button. */
.us-feedback[data-previous] { opacity: 0.85; }
.us-feedback[data-previous] .us-feedback-title { font-size: 13px; margin-bottom: 8px; }
.us-continue[hidden] { display: none; }
.us-feedback[data-result="correct"] .us-feedback-title { color: var(--correct); }
.us-feedback[data-result="wrong"] .us-feedback-title { color: var(--wrong); }
.us-feedback-answer { display: flex; align-items: center; gap: 12px; }
.us-feedback-answer img { width: 104px; border-radius: 4px; border: 1px solid var(--line); cursor: zoom-in; }
.us-feedback-answer div { display: flex; flex-direction: column; gap: 2px; }
.us-feedback-answer strong { font-family: var(--font-display); font-size: 19px; font-weight: 700; }
.us-feedback-plate { width: 104px; margin-left: auto; border-radius: 4px; cursor: zoom-in; }
.us-feedback-plate[hidden] { display: none; }
.us-feedback-other { margin: 10px 0 0; font-size: 13px; line-height: 1.4; }
.us-feedback-other[hidden] { display: none; }
.us-continue { width: 100%; margin-top: 12px; padding: 11px; }

/* ── Recap ── */
.us-recap h2 { margin: 0 0 4px; font-size: 24px; font-weight: 700; }
.us-recap-list { list-style: none; margin: 14px 0; padding: 0; display: flex; flex-direction: column; gap: 4px; }
.us-recap-list li {
  display: grid;
  grid-template-columns: 44px 1fr auto;
  grid-template-rows: auto auto;
  column-gap: 10px;
  align-items: center;
  padding: 6px 8px;
  border-radius: 8px;
  background: var(--surface-2);
  cursor: pointer;
}
.us-recap-list li:hover { background: var(--surface-3); }
.us-recap-list img { grid-row: span 2; width: 44px; border-radius: 3px; border: 1px solid var(--line); }
.us-recap-list span { font-family: var(--font-display); font-weight: 600; font-size: 14px; }
.us-recap-list small { grid-column: 2; color: var(--text-3); font-size: 11.5px; }
.us-recap-list b { grid-row: 1 / span 2; grid-column: 3; font-size: 18px; }
.us-recap-list li.is-correct b { color: var(--correct); }
.us-recap-list li.is-wrong b { color: var(--wrong); }
.us-recap-actions { display: flex; flex-wrap: wrap; gap: 8px; }
.us-recap-actions [hidden] { display: none; }

/* ── Phones: panel on top, map below ── */
@media (max-width: 760px) {
  body.us-page { height: auto; min-height: 100dvh; overflow: auto; }
  .us-header { flex-wrap: wrap; gap: 6px 12px; padding: 6px 12px; position: sticky; top: 0; z-index: 20; }
  .us-header h1 { font-size: 16px; }
  /* Phones: the bar has to fit back link, title and language in one row. */
  .us-header .app-logo { display: none; }
  .us-header-stats { font-size: 12px; gap: 10px; }
  /* During a round the header is one line: back, title, stats, end round. */
  body:has(.us-main[data-view="question"]) .us-header { flex-wrap: nowrap; }
  body:has(.us-main[data-view="question"]) .us-header h1,
  body:has(.us-main[data-view="question"]) .us-header .lang-switch { display: none; }
  body:has(.us-main[data-view="question"]) .us-header { gap: 8px; }
  .us-back { padding: 4px 0; border: 0; border-radius: 0; font-size: 13px; }
  .us-back:hover { text-decoration: underline; }
  .us-header-stats > span, .us-header-actions button { white-space: nowrap; }
  .us-header-actions button.small { padding: 4px 8px; }
  .us-main { flex-direction: column; }
  .us-panel { width: auto; border-right: 0; border-bottom: 1px solid var(--line); overflow: visible; }
  .us-map-panel { min-height: 62dvh; }
  .us-task { padding: 8px 8px 8px 30px; }
  .us-task input { left: 8px; top: 9px; }
  .us-task strong { font-size: 12.5px; }
  .us-task span { font-size: 11px; }
  .us-view { padding: 14px 14px 18px; }
  .us-setup h2 { font-size: 20px; }
  .us-lead { margin-bottom: 12px; font-size: 13px; }
  /* Keep the start button reachable while scrolling the options. */
  .us-start {
    position: sticky;
    bottom: 10px;
    z-index: 5;
    box-shadow: 0 8px 22px rgba(11, 16, 32, 0.3);
  }
  .play-legal-links { display: none; }

  /* Question: everything on one screen, the map takes what the card leaves. */
  body.us-page:has(.us-main[data-view="question"]) { height: 100dvh; overflow: hidden; }
  .us-main[data-view="question"] { flex: 1 1 auto; min-height: 0; }
  .us-main[data-view="question"] .us-panel { flex-shrink: 0; max-height: 58dvh; overflow-y: auto; }
  .us-main[data-view="question"] .us-map-panel { min-height: 0; flex: 1 1 auto; }
  .us-question .us-clue { flex-direction: row; justify-content: center; gap: 12px; margin-bottom: 10px; }
  .us-clue-flag { max-height: 84px; max-width: 46%; }
  .us-clue-plate { max-height: 96px; max-width: 70%; }
  .us-clue-name { font-size: 21px; }
  .us-task-prompt { margin-bottom: 8px; font-size: 11px; }
  .us-progress-track { margin-bottom: 10px; }
  .us-choices:not(.us-choices-flag) { grid-template-columns: 1fr 1fr; }
  button.us-choice { font-size: 14px; min-height: 40px; padding: 6px 8px; }
  .us-choices-flag .us-choice img, .us-choices-plate .us-choice img { aspect-ratio: 2 / 1; }
  .us-feedback-plate { width: 72px; }
  .us-feedback { margin-top: 8px; padding: 10px; }
  .us-feedback-answer img { width: 72px; }
  .us-feedback-answer strong { font-size: 16px; }
  .us-map-hint { bottom: 10px; font-size: 12px; }
}