:root {
  --green-bg: #e6f5ea;
  --green-main: #7ac48b;
  --green-dark: #2f7b4a;
  --accent: #fffbea;
  --text-main: #234;
  --danger: #c0392b;
  --radius: 16px;
  --shadow-soft: 0 4px 10px rgba(0,0,0,0.04);
  --border-soft: 1px solid rgba(0,0,0,0.06);
  --font-main: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --blue: #1e88e5;
  --deep-green: #2e7d32;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: var(--font-main);
  background: var(--green-bg);
  color: var(--text-main);
  min-height: 100vh;
}
.page {
  max-width: 1100px;
  margin: 0 auto;
  padding: 16px 16px 80px;
}
header {
  display: flex;
  align-items: center;
  gap: 16px;
}
.logo {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: #fff;
  border: 3px solid var(--green-main);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  flex-shrink: 0;
  position: relative;
}
.logo img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}
.logo-fallback {
  position: absolute;
  font-size: 9px;
  text-align: center;
  color: var(--green-dark);
  padding: 4px;
}
.title-wrap {
  flex: 1;
  text-align: center;
}
h1 {
  margin: 0;
  font-size: 2rem;
  color: var(--green-dark);
  letter-spacing: 0.04em;
}
.subtitle {
  font-size: 0.9rem;
  margin-top: 2px;
  opacity: 0.9;
}
.grid {
  display: grid;
  grid-template-columns: minmax(0, 3fr) minmax(260px, 2fr);
  gap: 16px;
  margin-top: 16px;
}
@media (max-width: 860px) {
  .grid { grid-template-columns: 1fr; }
}
.card {
  background: #fff;
  padding: 14px 14px 12px;
  border-radius: var(--radius);
  box-shadow: var(--shadow-soft);
  border: var(--border-soft);
}
.card h2 {
  margin: 0 0 8px;
  font-size: 1.05rem;
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--green-dark);
}
.mt { margin-top: 14px; }
.small-label {
  font-size: 0.8rem;
  opacity: 0.9;
}
label {
  font-size: 0.85rem;
  display: block;
  margin: 6px 0 2px;
}
input[type="text"], select {
  width: 100%;
  padding: 7px 9px;
  border-radius: 10px;
  border: 1px solid #c8e6c9;
  font-size: 0.9rem;
  outline: none;
}
input[type="text"]:focus, select:focus {
  border-color: var(--green-main);
  box-shadow: 0 0 0 2px rgba(122,196,139,0.18);
}
.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 6px;
}
.btn-row-tight {
  margin-top: 4px;
}
button {
  border: none;
  border-radius: 999px;
  padding: 7px 14px;
  font-size: 0.85rem;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--green-main);
  color: #fff;
  transition: transform 0.05s, box-shadow 0.08s, background 0.15s;
}
button.secondary {
  background: #ffffff;
  color: var(--green-dark);
  border: 1px solid var(--green-main);
}
button:active {
  transform: translateY(1px);
  box-shadow: 0 2px 4px rgba(0,0,0,0.12) inset;
}

/* Schreibbereich */
.writing-area {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin-top: 6px;
}
.writing-column label {
  font-weight: 500;
}
.writing-input {
  width: 100%;
  padding: 10px 10px;
  font-size: 1.1rem;
  border-radius: 12px;
  border: 1px solid #b7e0bf;
}
.writing-input::placeholder {
  color: #b0b0b0;
}
.writing-pad-wrap {
  margin-top: 8px;
}
#writingPad {
  width: 100%;
  max-width: 100%;
  border-radius: 12px;
  background: #ffffff;
  border: 1px solid #c8e6c9;
  box-shadow: 0 2px 4px rgba(0,0,0,0.04);
  cursor: crosshair;
}

/* Sichtbare Wortpaare */
.pair-wrapper { margin-top: 6px; }
.pair-display {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin-top: 6px;
}
.word-card {
  border-radius: 20px;
  padding: 18px 10px;
  background: var(--accent);
  border: 2px solid var(--green-main);
  text-align: center;
  cursor: pointer;
  box-shadow: 0 3px 6px rgba(0,0,0,0.06);
}
.word-icon {
  font-size: 2.2rem;
  display: block;
  margin-bottom: 4px;
}
.word-text {
  font-size: 2.4rem;
  font-weight: 800;
  color: var(--green-dark);
  letter-spacing: 0.05em;
}
.diff-left { color: var(--blue); }
.diff-right { color: var(--deep-green); }

.hint {
  font-size: 0.8rem;
  opacity: 0.85;
  margin-top: 4px;
}
.feedback {
  margin-top: 6px;
  font-size: 0.9rem;
  min-height: 20px;
}
.feedback.ok { color: var(--green-dark); }
.feedback.bad { color: var(--danger); }
.praise {
  font-size: 0.86rem;
  margin-top: 4px;
}
.praise span {
  padding: 2px 8px;
  border-radius: 999px;
  background: rgba(122,196,139,0.12);
  margin-right: 3px;
  margin-top: 2px;
  display: inline-block;
}

/* Statistik */
.stat-box {
  background: var(--accent);
  padding: 8px;
  border-radius: 12px;
  font-size: 0.8rem;
  margin-top: 4px;
}
.progress-wrap {
  margin: 4px 0;
  background: #fff;
  border-radius: 999px;
  overflow: hidden;
  border: 1px solid #f1e9c5;
  height: 10px;
}
.progress-bar {
  height: 100%;
  width: 0;
  background: var(--green-main);
  transition: width 0.25s ease;
}

/* Urkunde */
.certificate {
  margin-top: 10px;
  padding: 16px 10px 26px;
  border-radius: 22px;
  border: 2px solid var(--green-main);
  background: radial-gradient(circle at top, #ffffff 0%, #f3fff7 50%, #ffffff 100%);
  text-align: center;
  display: none;
  position: relative;
  box-shadow: 0 4px 10px rgba(0,0,0,0.06);
}
.cert-ribbon {
  position: absolute;
  top: -10px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--green-main);
  color: #fff;
  padding: 3px 18px;
  border-radius: 999px;
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.certificate h3 {
  margin: 10px 0 4px;
  color: var(--green-dark);
  font-size: 1.35rem;
}
.cert-line {
  margin: 2px 0;
  font-size: 0.85rem;
}
.cert-name {
  margin: 4px 0;
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--green-dark);
}
.cert-meta {
  margin: 4px 0;
  font-size: 0.8rem;
}
.cert-praise {
  margin: 6px 20px 2px;
  font-size: 0.85rem;
}
.stamp {
  position: absolute;
  right: 10px;
  bottom: 10px;
  display: flex;
  align-items: center;
  gap: 4px;
}
.stamp img {
  height: 30px;
  width: 30px;
  object-fit: contain;
}
.stamp-fallback {
  font-size: 0.7rem;
  padding: 3px 7px;
  border-radius: 999px;
  border: 1px dashed var(--green-dark);
  opacity: 0.7;
}

/* Druckbare Statistik */
.print-stats {
  margin-top: 6px;
  padding: 8px;
  background: #fdfaf2;
  border-radius: 10px;
  border: 1px solid #f1e9c5;
  font-size: 0.8rem;
}
.print-stats h3 {
  margin: 0 0 4px;
  font-size: 0.95rem;
  color: var(--green-dark);
}
.ps-hinweis {
  font-size: 0.7rem;
  color: #666;
}

/* Whiteboard */
.whiteboard-wrapper { margin-top: 6px; }
.whiteboard-wrapper.hidden { display: none; }
#whiteboard {
  width: 100%;
  max-width: 100%;
  border-radius: 12px;
  background: #ffffff;
  border: 1px solid #c8e6c9;
  box-shadow: 0 2px 4px rgba(0,0,0,0.04);
  cursor: crosshair;
}

/* Footer */
footer {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 4px 12px 6px;
  font-size: 0.7rem;
  text-align: center;
  color: #345;
  background: rgba(230,245,234,0.98);
  border-top: 1px solid rgba(0,0,0,0.04);
  backdrop-filter: blur(4px);
}

@media print {
  body { background: #fff; }
  footer { display: none; }
  .page { padding-bottom: 10px; }
  .card, header {
    box-shadow: none;
    border: none;
  }
}