:root {
  --paper: #faf6ec;
  --paper-edge: #efe8d6;
  --ink: #2b2620;
  --ink-muted: #6b6252;
  --rule: #d9d0b8;
  --paper-correct: #2f7a5c;
  --paper-correct-bg: rgba(47, 122, 92, 0.1);
  --paper-off: #a8631f;
  --paper-off-bg: rgba(168, 99, 31, 0.12);
}

.worksheet {
  background: var(--paper);
  color: var(--ink);
  font-family: Georgia, "Times New Roman", serif;
  border-radius: var(--radius-lg);
  padding: 36px 40px 44px;
  box-shadow: var(--shadow);
  border: 1px solid var(--paper-edge);
}

/* ── Header ────────────────────────────────────────────────── */
.worksheet-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 24px;
  flex-wrap: wrap;
  border-bottom: 3px double var(--rule);
  padding-bottom: 18px;
  margin-bottom: 30px;
}

.worksheet-kicker {
  margin: 0 0 4px;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 0.72rem;
  color: var(--ink-muted);
  font-family: Georgia, serif;
}

.worksheet-title-block h2 {
  margin: 0;
  font-size: 1.8rem;
  color: var(--ink);
}

.worksheet-fields {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
}

.worksheet-field {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 0.8rem;
  color: var(--ink-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.worksheet-field input {
  font-family: Georgia, serif;
  font-size: 1rem;
  color: var(--ink);
  text-transform: none;
  letter-spacing: normal;
  border: none;
  border-bottom: 1px solid var(--ink-muted);
  background: transparent;
  padding: 4px 2px;
  width: 200px;
}

.worksheet-field input:focus {
  outline: none;
  border-bottom-color: var(--ink);
}

/* ── Exercises ─────────────────────────────────────────────── */
.exercise {
  margin-bottom: 40px;
}

.exercise h3 {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 0 0 10px;
  font-size: 1.25rem;
  color: var(--ink);
}

.ex-number {
  flex-shrink: 0;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  border: 2px solid var(--ink);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
}

.ex-instructions {
  margin: 0 0 18px;
  color: var(--ink-muted);
  line-height: 1.65;
  max-width: 70ch;
}

.ex-instructions em {
  color: var(--ink);
  font-style: italic;
}

/* ── Staff diagrams ────────────────────────────────────────── */
.staff-holder {
  background: #fffdf7;
  border: 1px solid var(--rule);
  border-radius: 10px;
  padding: 12px 8px;
  overflow-x: auto;
}

.staff-svg {
  display: block;
  margin: 0 auto;
  width: 100%;
  max-width: 480px;
  height: auto;
}

.staff-line { stroke: var(--ink); stroke-width: 1.4; }
.staff-ledger { stroke: var(--ink); stroke-width: 1.4; }
.staff-clef { fill: var(--ink); }
.staff-note { fill: var(--ink); }
.staff-note-number {
  fill: var(--paper-correct);
  font-family: Georgia, serif;
  font-weight: 700;
  font-size: 13px;
  text-anchor: middle;
}

/* ── Blanks ────────────────────────────────────────────────── */
.blank-row {
  display: flex;
  flex-wrap: wrap;
  gap: 20px 28px;
  margin-top: 16px;
  justify-content: center;
}

.blank-item {
  display: flex;
  align-items: baseline;
  gap: 6px;
  font-size: 1rem;
}

.blank-item .blank-number {
  color: var(--ink-muted);
  font-weight: 700;
}

.blank-item input {
  width: 46px;
  text-align: center;
  font-family: Georgia, serif;
  font-size: 1.1rem;
  color: var(--ink);
  background: transparent;
  border: none;
  border-bottom: 2px solid var(--ink);
  padding: 2px 0;
  text-transform: uppercase;
}

.blank-item input:focus {
  outline: none;
  border-bottom-color: var(--paper-correct);
}

.blank-item .blank-feedback {
  font-size: 0.82rem;
  margin-left: 2px;
  min-width: 1em;
}

.blank-item.is-correct input {
  border-bottom-color: var(--paper-correct);
  background: var(--paper-correct-bg);
}

.blank-item.is-correct .blank-feedback {
  color: var(--paper-correct);
}

.blank-item.is-off input {
  border-bottom-color: var(--paper-off);
  background: var(--paper-off-bg);
}

.blank-item.is-off .blank-feedback {
  color: var(--paper-off);
  font-style: italic;
}

/* ── Note values ───────────────────────────────────────────── */
.note-values {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
  justify-content: center;
}

.note-value-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  background: #fffdf7;
  border: 1px solid var(--rule);
  border-radius: 10px;
  padding: 16px 18px;
  min-width: 130px;
}

.note-value-item svg {
  display: block;
}

.note-symbol-head {
  fill: none;
  stroke: var(--ink);
  stroke-width: 2.4;
}

.note-symbol-head.is-filled {
  fill: var(--ink);
}

.note-symbol-stem {
  stroke: var(--ink);
  stroke-width: 2.2;
}

.note-symbol-flag {
  fill: none;
  stroke: var(--ink);
  stroke-width: 2.4;
  stroke-linecap: round;
}

.note-value-item select {
  font-family: Georgia, serif;
  font-size: 0.92rem;
  color: var(--ink);
  border: none;
  border-bottom: 2px solid var(--ink);
  background: transparent;
  padding: 4px 2px;
  text-align: center;
}

.note-value-item.is-correct select {
  border-bottom-color: var(--paper-correct);
  background: var(--paper-correct-bg);
}

.note-value-item.is-off select {
  border-bottom-color: var(--paper-off);
  background: var(--paper-off-bg);
}

.note-value-item .blank-feedback {
  font-size: 0.8rem;
  min-height: 1.1em;
}

.note-value-item.is-correct .blank-feedback { color: var(--paper-correct); }
.note-value-item.is-off .blank-feedback { color: var(--paper-off); font-style: italic; }

/* ── Vocabulary ────────────────────────────────────────────── */
.vocab-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.vocab-row {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
  padding: 10px 0;
  border-bottom: 1px dashed var(--rule);
}

.vocab-definition {
  flex: 1 1 320px;
  color: var(--ink);
  line-height: 1.5;
}

.vocab-row select {
  font-family: Georgia, serif;
  font-size: 0.95rem;
  color: var(--ink);
  border: none;
  border-bottom: 2px solid var(--ink);
  background: transparent;
  padding: 4px 2px;
  min-width: 170px;
}

.vocab-row.is-correct select {
  border-bottom-color: var(--paper-correct);
  background: var(--paper-correct-bg);
}

.vocab-row.is-off select {
  border-bottom-color: var(--paper-off);
  background: var(--paper-off-bg);
}

.vocab-row .blank-feedback {
  font-size: 0.82rem;
  flex-basis: 100%;
}

.vocab-row.is-correct .blank-feedback { color: var(--paper-correct); }
.vocab-row.is-off .blank-feedback { color: var(--paper-off); font-style: italic; }

/* ── Actions + results ─────────────────────────────────────── */
.worksheet-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  justify-content: center;
  margin-top: 12px;
  padding-top: 24px;
  border-top: 3px double var(--rule);
}

.check-btn {
  font-family: Georgia, serif;
  border: none;
  border-radius: var(--radius-sm);
  background: linear-gradient(180deg, var(--paper-correct) 0%, #245f47 100%);
  color: #fff;
  font-weight: 700;
  font-size: 1.02rem;
  padding: 14px 30px;
  cursor: pointer;
  transition: transform 140ms ease, box-shadow 140ms ease;
}

.check-btn:hover,
.check-btn:focus-visible {
  transform: translateY(-2px);
  outline: none;
}

.secondary-btn {
  font-family: Georgia, serif;
  border: 1px solid var(--ink-muted);
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--ink);
  font-weight: 700;
  font-size: 0.95rem;
  padding: 13px 24px;
  cursor: pointer;
  transition: background 140ms ease, transform 140ms ease;
}

.secondary-btn:hover,
.secondary-btn:focus-visible {
  background: rgba(43, 38, 32, 0.06);
  transform: translateY(-1px);
  outline: none;
}

.results-summary {
  margin: 22px auto 0;
  text-align: center;
  font-size: 1.1rem;
  font-weight: 700;
  max-width: 60ch;
  color: var(--ink);
}

@media (max-width: 760px) {
  .worksheet {
    padding: 26px 18px 32px;
  }

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

  .worksheet-field input {
    width: 100%;
  }

  .staff-svg {
    min-width: 360px;
  }
}

/* ── Print ─────────────────────────────────────────────────── */
@media print {
  .app-nav,
  .topbar,
  .worksheet-actions,
  .results-summary {
    display: none !important;
  }

  body {
    background: #fff;
  }

  .app-shell {
    width: 100%;
    padding: 0;
  }

  .worksheet {
    box-shadow: none;
    border: none;
    padding: 0;
  }

  .blank-item.is-correct input,
  .blank-item.is-off input,
  .note-value-item.is-correct select,
  .note-value-item.is-off select,
  .vocab-row.is-correct select,
  .vocab-row.is-off select {
    background: transparent;
  }

  .blank-feedback {
    display: none !important;
  }
}