:root {
  --color-bg: #f3f6f7;
  --color-surface: #ffffff;
  --color-text: #1e2a2e;
  --color-muted: #5c6f75;
  --color-primary: #2c5f6f;
  --color-primary-dark: #1d4652;
  --color-accent: #e8a33d;
  --color-correct: #2f9e5b;
  --color-wrong: #d1495b;
  --color-border: #d9e2e4;
  --radius: 14px;
  --shadow: 0 2px 10px rgba(30, 42, 46, 0.08);
  font-size: 17px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

h1 {
  font-size: 1.5rem;
  margin: 0.4em 0 0.6em;
}

h2 {
  font-size: 1.15rem;
  margin: 0 0 0.5em;
}

.muted {
  color: var(--color-muted);
  font-size: 0.92rem;
}

.app-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
  padding: 0.6rem 1rem;
  background: var(--color-primary);
  color: white;
  position: sticky;
  top: 0;
  z-index: 10;
}

.app-bar__title {
  font-weight: 700;
  font-size: 1.1rem;
}

.app-bar__identity {
  font-size: 0.85rem;
  opacity: 0.9;
}

.app-bar__nav {
  margin-left: auto;
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.link-button {
  background: none;
  border: none;
  color: inherit;
  cursor: pointer;
  padding: 0.3rem 0.5rem;
  font-size: 0.9rem;
  text-decoration: underline;
  border-radius: 8px;
}

.app-bar .link-button:hover,
.app-bar .link-button:focus-visible {
  background: rgba(255, 255, 255, 0.15);
}

main {
  flex: 1;
  width: min(720px, 100%);
  margin: 0 auto;
  padding: 1rem 1rem 5rem;
}

.screen[hidden] {
  display: none;
}

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1rem 1.1rem;
  margin-bottom: 1rem;
}

fieldset {
  border: none;
  padding: 0;
  margin: 0 0 1rem;
}

legend {
  font-weight: 600;
  padding: 0;
  margin-bottom: 0.4rem;
}

.checkbox-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.2rem;
}

.checkbox-grid label,
fieldset label {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  margin-right: 1rem;
}

.button {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  justify-content: center;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text);
  padding: 0.65rem 1.1rem;
  border-radius: 10px;
  font-size: 1rem;
  cursor: pointer;
  min-height: 44px;
}

.button:hover,
.button:focus-visible {
  border-color: var(--color-primary);
}

.button--primary {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: white;
  font-weight: 600;
}

.button--primary:hover,
.button--primary:focus-visible {
  background: var(--color-primary-dark);
}

.setup-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: 0.8rem;
}

.training-head {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 0.6rem;
}

.timer {
  margin-left: auto;
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  font-size: 1.2rem;
  color: var(--color-primary);
}

.question-card {
  text-align: center;
  padding: 2rem 1.2rem;
}

.question {
  font-size: 1.8rem;
  font-weight: 700;
  margin: 0 0 1rem;
  word-break: break-word;
}

.answer-input {
  width: 100%;
  font-size: 1.3rem;
  padding: 0.7rem 0.8rem;
  border: 2px solid var(--color-border);
  border-radius: 10px;
  text-align: center;
}

.answer-input:focus {
  outline: none;
  border-color: var(--color-primary);
}

.training-actions {
  display: flex;
  gap: 0.6rem;
}

.training-actions .button {
  flex: 1;
}

.feedback-line {
  min-height: 1.6em;
  font-weight: 600;
  text-align: center;
}

.feedback-line.correct {
  color: var(--color-correct);
}

.feedback-line.wrong {
  color: var(--color-wrong);
}

.feedback-line.hint {
  color: var(--color-accent);
}

.result-summary {
  font-size: 1.3rem;
  font-weight: 700;
}

.calendar-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 0.3rem;
  margin-bottom: 1rem;
}

.calendar-day {
  aspect-ratio: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  font-size: 0.85rem;
  position: relative;
}

.calendar-day--trained {
  background: #fff6e3;
  border-color: var(--color-accent);
}

.calendar-day--trained::after {
  content: "★";
  position: absolute;
  bottom: 2px;
  right: 4px;
  font-size: 0.7rem;
  color: var(--color-accent);
}

.calendar-day--empty {
  visibility: hidden;
}

.stacked {
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
}

.inline-form {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.inline-form input,
.inline-form select {
  flex: 1 1 140px;
  padding: 0.5rem 0.6rem;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  font-size: 0.95rem;
}

.list-card__head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 0.6rem;
}

.list-card__global {
  margin-left: auto;
  font-size: 0.85rem;
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
}

/* Ein eigenes "display" auf einem Element setzt sonst die
   Browser-Standardregel fuer [hidden] (display: none) ausser Kraft --
   real gefunden (Playwright-Screenshot zeigte die Checkbox trotz
   .hidden = true weiterhin in "Meine Listen"). */
.list-card__global[hidden] {
  display: none;
}

.card-list {
  list-style: none;
  margin: 0 0 0.6rem;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.card-row {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.card-row input {
  padding: 0.35rem 0.5rem;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  font-size: 0.9rem;
}

.card-row-de,
.card-row-en {
  flex: 1 1 40%;
  min-width: 0;
}

.card-row-grade {
  width: 4.2rem;
}

.card-row-arrow {
  color: var(--color-muted);
}

.offline-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--color-primary-dark);
  color: white;
  text-align: center;
  padding: 0.5rem;
  font-size: 0.9rem;
  z-index: 20;
}

select#profile-grade,
select#child-select,
select#child-list-lang,
select#grade-child-select,
select#grade-child-value {
  padding: 0.5rem 0.6rem;
  border-radius: 8px;
  border: 1px solid var(--color-border);
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-bg: #12191b;
    --color-surface: #1b2528;
    --color-text: #e9f1f2;
    --color-muted: #93a5aa;
    --color-border: #2c3a3e;
    --shadow: 0 2px 10px rgba(0, 0, 0, 0.35);
  }

  .calendar-day--trained {
    background: #3a3120;
  }
}