:root {
  --bg: #d8e8f0;
  --surface: rgba(226, 239, 246, 0.94);
  --surface-strong: #ffffff;
  --ink: #1f2528;
  --muted: #3f4c52;
  --heading: #476b90;
  --accent: #7a9c63;
  --accent-strong: #658751;
  --line: rgba(71, 107, 144, 0.16);
  --success: #6f985e;
  --error: #996f8c;
  --shadow: 0 20px 40px rgba(77, 101, 124, 0.12);
  --font-ui: "Switzer-Variable", "Switzer-Regular", "Helvetica Neue", Arial, sans-serif;
  --font-transliteration: "Times New Roman", Georgia, serif;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  font-family: var(--font-ui);
  color: var(--ink);
  background:
    radial-gradient(circle at top left, rgba(183, 212, 104, 0.28), transparent 22rem),
    radial-gradient(circle at bottom right, rgba(162, 119, 152, 0.2), transparent 24rem),
    linear-gradient(180deg, #dbeaf1 0%, #d4e5ef 50%, #c9dde8 100%);
}

button,
input,
audio {
  font: inherit;
}

.app-shell {
  max-width: 1440px;
  margin: 0 auto;
  padding: 1.25rem;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 1rem;
  padding: 1.25rem 1.5rem 0.5rem;
}

.eyebrow {
  margin: 0 0 0.35rem;
  color: var(--accent);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: none;
}

.topbar h1 {
  margin: 0;
  font-size: clamp(2rem, 3vw, 3rem);
  line-height: 1;
  color: var(--heading);
}

h2,
h3,
h4 {
  color: var(--heading);
}

.main-nav {
  display: flex;
  align-self: end;
  gap: 0.35rem;
  flex-wrap: wrap;
  margin-bottom: -0.5rem;
  position: relative;
  z-index: 2;
}

.main-nav a,
.button,
.control-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.45rem;
  padding: 0.55rem 0.9rem;
  border: 0;
  background: var(--surface-strong);
  color: var(--ink);
  text-decoration: none;
  cursor: pointer;
  box-shadow: 0 0 0 1px rgba(71, 107, 144, 0.12) inset;
  transition: transform 120ms ease, background 120ms ease, box-shadow 120ms ease;
}

.control-button {
  min-height: 2.15rem;
  padding: 0.4rem 0.75rem;
  font-size: 0.95rem;
}

.main-nav a.active,
.main-nav a:hover,
.button:hover,
.control-button:hover,
.control-button.active {
  background: #edf6ef;
  box-shadow: 0 0 0 1px rgba(111, 152, 94, 0.28) inset;
  transform: translateY(-1px);
}

.main-nav a {
  min-height: 2.8rem;
  padding: 0.7rem 1.2rem 0.9rem;
  background: linear-gradient(180deg, rgba(197, 218, 228, 0.96), rgba(178, 202, 216, 0.94));
  box-shadow:
    0 -1px 0 rgba(255, 255, 255, 0.42) inset,
    0 0 0 1px rgba(71, 107, 144, 0.18) inset;
}

.main-nav a:hover {
  background: linear-gradient(180deg, rgba(207, 225, 200, 0.96), rgba(190, 214, 182, 0.94));
}

.main-nav a.active {
  background: var(--surface);
  box-shadow:
    0 -1px 0 rgba(255, 255, 255, 0.35) inset,
    0 0 0 1px rgba(71, 107, 144, 0.14) inset;
  transform: translateY(1px);
}

.button.primary {
  background: var(--accent);
  color: #f5fbf4;
  box-shadow: none;
}

.button.primary:hover {
  background: var(--accent-strong);
}

.view-root {
  padding: 0;
}

.panel {
  background: var(--surface);
  box-shadow: var(--shadow);
}

.hero,
.impressum,
.quiz-layout {
  padding: 1.5rem;
}

.hero {
  display: grid;
  grid-template-columns: 1.3fr 0.9fr;
  gap: 1.25rem;
  padding: 1.5rem;
}

.hero-copy,
.hero-side,
.quiz-intro,
.quiz-board,
.impressum {
  padding: 1.5rem;
  background: rgba(240, 247, 251, 0.88);
}

.hero-copy p,
.quiz-intro p,
.impressum p,
.impressum li,
.info-body p {
  font-size: 1.05rem;
  line-height: 1.65;
}

.hero-actions {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-top: 1.5rem;
}

.hero-side {
  display: grid;
  align-content: start;
  padding: 1rem 1.25rem;
  background: var(--surface-strong);
  position: relative;
  min-height: 12rem;
}

.hero-side-brand {
  display: grid;
  gap: 1rem;
  max-width: calc(100% - 11.5rem);
}

.hero-copy {
  padding: 0;
  background: transparent;
}

.feature-stat {
  padding: 1rem 1.1rem;
  background: linear-gradient(180deg, rgba(204, 226, 196, 0.92), rgba(188, 214, 178, 0.86));
  box-shadow: 0 1px 0 rgba(71, 107, 144, 0.08) inset;
}

.feature-stat strong {
  display: block;
  font-size: 1.5rem;
}

.hero-logo-link {
  display: inline-block;
  width: 161px;
  max-width: 100%;
  overflow: hidden;
  text-decoration: none;
}

.hero-logo {
  display: block;
  width: 161px;
  max-width: none;
  height: auto;
  margin-left: -10px;
}

.hero-side-note {
  margin: 0;
  color: var(--muted);
  font-size: 0.98rem;
}

.hero-side-note a {
  color: inherit;
}

.hero-anniversary-link {
  display: block;
  position: absolute;
  top: 1rem;
  right: 1.25rem;
  max-width: 12rem;
  text-decoration: none;
  padding-left: 1rem;
}

.hero-anniversary-mark {
  display: block;
  width: 100%;
  height: auto;
}

.quiz-layout {
  display: grid;
  gap: 1.25rem;
  padding: 1.5rem;
}

.quiz-intro h2,
.impressum h2 {
  margin-top: 0;
}

.quiz-toolbar {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  align-items: center;
  margin-top: 1rem;
}

.status {
  min-height: 1.5rem;
  font-weight: 700;
}

.status.success {
  color: var(--success);
}

.status.error {
  color: var(--error);
}

.quiz-board {
  display: grid;
}

.cards-stack {
  display: grid;
  gap: 1rem;
}

.card {
  position: relative;
  display: grid;
  gap: 1rem;
  padding: 1rem 1rem 1rem 2.4rem;
  background: var(--surface-strong);
  box-shadow: 0 0 0 1px rgba(71, 107, 144, 0.08) inset;
  cursor: grab;
}

.card.dragging {
  opacity: 0.55;
  cursor: grabbing;
}

.card::before {
  content: "";
  position: absolute;
  top: 1rem;
  bottom: 1rem;
  left: 0.8rem;
  width: 0.55rem;
  background:
    repeating-linear-gradient(
      to bottom,
      rgba(96, 123, 133, 0.78) 0,
      rgba(96, 123, 133, 0.78) 0.22rem,
      transparent 0.22rem,
      transparent 0.46rem
    );
  opacity: 0.7;
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: start;
  gap: 1rem;
}

.card-title-wrap h3,
.card-title-wrap p {
  margin: 0;
}

.card-title-wrap p {
  color: var(--muted);
}

.order-badge {
  min-width: 2.1rem;
  min-height: 2.1rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: #d5e6c7;
  font-weight: 700;
}

.card-controls,
.move-controls,
.toggle-row,
.zoom-controls {
  display: flex;
  gap: 0.65rem;
  flex-wrap: wrap;
  align-items: center;
}

.toggle-row .control-button {
  background: linear-gradient(180deg, rgba(197, 218, 228, 0.96), rgba(178, 202, 216, 0.94));
  box-shadow:
    0 -1px 0 rgba(255, 255, 255, 0.42) inset,
    0 0 0 1px rgba(71, 107, 144, 0.18) inset;
}

.toggle-row .control-button:hover {
  background: linear-gradient(180deg, rgba(207, 225, 200, 0.96), rgba(190, 214, 182, 0.94));
  box-shadow:
    0 -1px 0 rgba(255, 255, 255, 0.42) inset,
    0 0 0 1px rgba(111, 152, 94, 0.22) inset;
}

.toggle-row .control-button.active {
  background: rgba(236, 245, 249, 0.94);
  box-shadow: 0 0 0 1px rgba(71, 107, 144, 0.16) inset;
}

.scan-frame {
  overflow: auto;
  padding: 0.75rem;
  background: linear-gradient(180deg, #d3e3ec, #e5f0f5);
  box-shadow: 0 0 0 1px rgba(71, 107, 144, 0.08) inset;
  min-height: 16rem;
  max-height: 26rem;
  touch-action: pan-x pan-y;
}

.scan-strip {
  display: flex;
  gap: 0.75rem;
  width: 100%;
  transform-origin: top left;
}

.scan-page {
  position: relative;
  flex: 0 0 100%;
}

.scan-strip img {
  display: block;
  height: auto;
  width: 100%;
  max-width: none;
  box-shadow: 0 12px 28px rgba(28, 21, 17, 0.18);
}

.scan-highlight {
  position: absolute;
  background: rgba(183, 212, 104, 0.34);
  box-shadow: 0 0 0 2px rgba(122, 156, 99, 0.4);
  pointer-events: none;
}

.card-body {
  display: grid;
  gap: 0.85rem;
}

.card-columns {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(20rem, 0.8fr);
  gap: 1rem;
  align-items: start;
}

.scan-column,
.text-column {
  display: grid;
  gap: 0.85rem;
  min-height: 0;
}

.text-column {
  min-width: 0;
  grid-template-rows: auto minmax(0, 1fr);
}

.transliteration,
.info-panel {
  padding: 1rem;
  background: rgba(236, 245, 249, 0.94);
  box-shadow: 0 0 0 1px rgba(71, 107, 144, 0.08) inset;
  min-height: 10rem;
}

.quiz-intro,
.quiz-board {
  padding: 0;
  background: transparent;
}

.scroll-panel {
  overflow: auto;
  min-height: 0;
  max-height: 32rem;
}

.transliteration pre {
  margin: 0;
  white-space: pre-wrap;
  line-height: 1.45;
  font-family: var(--font-transliteration);
}

.transliteration-lines {
  display: grid;
  gap: 0.35rem;
  font-family: var(--font-transliteration);
}

.trans-line {
  line-height: 1.55;
}

.trans-line.break {
  min-height: 0.8rem;
}

.trans-word {
  display: inline-block;
  padding: 0 0.08rem;
}

.trans-word.alignable {
  cursor: crosshair;
}

.trans-word.active,
.trans-word.alignable:hover {
  background: rgba(183, 212, 104, 0.3);
}

.info-panel[hidden],
.transliteration[hidden] {
  display: none;
}

.info-body h3 {
  margin-top: 0;
}

.info-body h4 {
  margin-bottom: 0.6rem;
}

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

.impressum ul {
  padding-left: 1.2rem;
}

@media (max-width: 980px) {
  .hero,
  .card-columns {
    grid-template-columns: 1fr;
  }

  .topbar {
    align-items: start;
    flex-direction: column;
  }

  .main-nav {
    align-self: stretch;
  }

  .hero-side {
    min-height: 0;
  }

  .hero-side-brand {
    max-width: 100%;
  }

  .hero-anniversary-link {
    position: static;
    justify-self: end;
    margin-top: 0.25rem;
  }

  .scan-frame {
    max-height: 22rem;
  }
}