:root {
  --bg: #f4f6f8;
  --ink: #2c3540;
  --accent: #7456a8;
  --accent-dark: #563a83;
  --border: #dde2e8;
  --card: #ffffff;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  font-family: "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--ink);
}

#app {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

header.top-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 24px;
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
  color: #fff;
  flex-wrap: wrap;
  gap: 10px;
  position: sticky;
  top: 0;
  z-index: 5;
}
header.top-bar h1 { margin: 0; font-size: 18px; }
header.top-bar .subtitle { font-size: 12px; opacity: 0.85; margin-top: 2px; }

.progress-wrap { display: flex; align-items: center; gap: 10px; }
.progress-bar-track { width: 140px; height: 8px; background: rgba(255,255,255,0.3); border-radius: 6px; overflow: hidden; }
.progress-bar-fill { height: 100%; background: #ffd166; width: 0%; transition: width 0.3s ease; }
.progress-label { font-size: 12px; white-space: nowrap; }

main.content {
  flex: 1;
  display: flex;
  justify-content: center;
  padding: 26px 18px 90px;
}

.sheet {
  max-width: 760px;
  width: 100%;
}

.card {
  background: var(--card);
  border-radius: 12px;
  box-shadow: 0 2px 10px rgba(0,0,0,0.06);
  padding: 24px 28px;
  margin-bottom: 20px;
}

.card h2 {
  margin-top: 0;
  font-size: 16px;
  color: var(--accent-dark);
  border-bottom: 1px solid var(--border);
  padding-bottom: 10px;
}

.card .hint {
  font-size: 12.5px;
  color: #6b7785;
  margin-top: -4px;
  margin-bottom: 14px;
}

.field-row {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 12px;
}
.field-row .field { flex: 1; min-width: 140px; }
.field label { display: block; font-size: 12.5px; color: #6b7785; margin-bottom: 4px; }
.field input[type="text"], .field textarea {
  width: 100%;
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 14px;
  font-family: inherit;
  background: #fbfbfc;
}
.field input[type="text"]:focus, .field textarea:focus {
  outline: none;
  border-color: var(--accent);
  background: #fff;
}

table.plural-table { width: 100%; border-collapse: collapse; margin-bottom: 4px; }
table.plural-table th, table.plural-table td {
  border: 1px solid var(--border);
  padding: 8px 10px;
  text-align: left;
}
table.plural-table th { background: #f1ecf8; color: var(--accent-dark); font-size: 13px; }
table.plural-table input[type="text"] {
  width: 100%;
  border: none;
  background: transparent;
  font-size: 14px;
  padding: 4px 2px;
}
table.plural-table input[type="text"]:focus { outline: 1px solid var(--accent); border-radius: 4px; }

.sentence-line {
  display: flex;
  align-items: baseline;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 12px;
  font-size: 14.5px;
}
.sentence-line input[type="text"] {
  flex: 1;
  min-width: 140px;
  border: none;
  border-bottom: 1.5px dotted #a9a0bb;
  background: transparent;
  font-size: 14.5px;
  padding: 4px 2px;
  font-family: inherit;
}
.sentence-line input[type="text"]:focus { outline: none; border-bottom-color: var(--accent); }

.word-bank {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 16px;
}
.word-chip {
  background: #f1ecf8;
  color: var(--accent-dark);
  border-radius: 14px;
  padding: 4px 12px;
  font-size: 12.5px;
  font-weight: 600;
}

textarea { resize: vertical; min-height: 50px; }

footer.bottom-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: #ffffff;
  border-top: 1px solid var(--border);
  padding: 12px 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
}

button.action-btn {
  background: var(--accent);
  color: #fff;
  border: none;
  padding: 10px 22px;
  border-radius: 20px;
  font-size: 14px;
  cursor: pointer;
}
button.action-btn:hover { background: var(--accent-dark); }
button.action-btn.secondary {
  background: #fff;
  color: var(--accent-dark);
  border: 1px solid var(--border);
}
button.action-btn.secondary:hover { background: #f1ecf8; }

.finish-note {
  text-align: center;
  font-weight: 600;
  color: var(--accent-dark);
  background: #f1ecf8;
  border-radius: 10px;
  padding: 12px 16px;
  margin-bottom: 20px;
  display: none;
}
.finish-note.visible { display: block; }

@media print {
  header.top-bar, footer.bottom-bar { display: none !important; }
  main.content { padding: 0; }
  .card { box-shadow: none; border: 1px solid #ccc; }
}