/* ── LESSON PLAN FEATURE ──────────────────────────────────────────── */

/* Button in Book Detail view */
.detail-lp-action {
  display: flex;
  justify-content: flex-end;
  padding-top: 0;
  margin-top: -0.25rem;  /* tuck closer to curriculum section */
}

.btn-lesson-plan {
  background: transparent;
  color: var(--gray-mid, #6b7280);
  border: 1px solid var(--border, #d1d5db);
  border-radius: 6px;
  padding: 0.28rem 0.65rem;
  font-size: 0.76rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.15s;
  white-space: nowrap;
}
.btn-lesson-plan:hover {
  background: var(--surface-alt, #f3f4f6);
  color: var(--green-dark, #2d6a4f);
  border-color: var(--green-mid, #40916c);
}

/* ── Lesson Plan Modal overlay ───────────────────────────── */
#lp-modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.55);
  z-index: 1200;
  align-items: center;
  justify-content: center;
}
#lp-modal-overlay.open { display: flex; }

.lp-modal {
  background: var(--surface, #fff);
  border-radius: 10px;
  box-shadow: 0 8px 32px rgba(0,0,0,0.28);
  width: min(680px, 96vw);
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  overscroll-behavior: contain;
}

.lp-modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.9rem 1.1rem 0.75rem;
  border-bottom: 1px solid var(--border, #e5e7eb);
  gap: 0.5rem;
}
.lp-modal-header h3 {
  margin: 0;
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-dark, #111827);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.lp-modal-close {
  background: none;
  border: none;
  font-size: 1.3rem;
  cursor: pointer;
  color: var(--gray-mid, #6b7280);
  line-height: 1;
  padding: 0 0.2rem;
  flex-shrink: 0;
}
.lp-modal-close:hover { color: var(--text-dark, #111827); }

/* ── Form panel ──────────────────────────────────────── */
#lp-form-panel {
  padding: 1rem 1.1rem;
  overflow-y: auto;
  flex: 1;
}

.lp-field-group {
  margin-bottom: 0.9rem;
}
.lp-field-group label {
  display: block;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--gray-mid, #6b7280);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 0.35rem;
}

/* Teacher type radios */
.lp-type-row {
  display: flex;
  gap: 1.25rem;
  flex-wrap: wrap;
}
.lp-type-row label {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.88rem;
  font-weight: 500;
  text-transform: none;
  letter-spacing: 0;
  color: var(--text-dark, #111827);
  cursor: pointer;
}
.lp-type-row input[type="radio"] { cursor: pointer; }

/* Select row */
.lp-selects-row {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}
.lp-selects-row .lp-field-group { flex: 1; min-width: 120px; }
.lp-selects-row select {
  width: 100%;
  padding: 0.4rem 0.5rem;
  border: 1px solid var(--border, #d1d5db);
  border-radius: 5px;
  font-size: 0.88rem;
  background: var(--surface, #fff);
  color: var(--text-dark, #111827);
}

/* Notes textarea */
#lp-notes {
  width: 100%;
  box-sizing: border-box;
  padding: 0.4rem 0.5rem;
  border: 1px solid var(--border, #d1d5db);
  border-radius: 5px;
  font-size: 0.88rem;
  resize: vertical;
  min-height: 60px;
  font-family: inherit;
  color: var(--text-dark, #111827);
  background: var(--surface, #fff);
}

/* Form actions */
.lp-form-actions {
  display: flex;
  justify-content: flex-end;
  gap: 0.6rem;
  padding: 0.75rem 1.1rem 0.9rem;
  border-top: 1px solid var(--border, #e5e7eb);
  background: var(--surface, #fff);
}
.lp-btn-cancel {
  background: var(--surface-alt, #f3f4f6);
  border: 1px solid var(--border, #d1d5db);
  border-radius: 6px;
  padding: 0.42rem 0.9rem;
  font-size: 0.85rem;
  cursor: pointer;
  color: var(--text-dark, #111827);
}
.lp-btn-cancel:hover { background: var(--border, #e5e7eb); }
.lp-btn-generate {
  background: var(--green-dark, #2d6a4f);
  color: #fff;
  border: none;
  border-radius: 6px;
  padding: 0.42rem 1.1rem;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s;
}
.lp-btn-generate:hover { background: var(--green-mid, #40916c); }

/* ── Result panel ────────────────────────────────────── */
#lp-result-panel {
  padding: 0.75rem 1.1rem 0;
  overflow-y: auto;
  flex: 1;
  display: none;
}

.lp-spinner {
  padding: 2.5rem 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.85rem;
  color: var(--gray-mid, #6b7280);
  font-size: 0.88rem;
}

.lp-spinner-ring {
  width: 32px;
  height: 32px;
  border: 3px solid var(--border, #e5e7eb);
  border-top-color: var(--green-dark, #2d6a4f);
  border-radius: 50%;
  animation: lp-spin 0.75s linear infinite;
  flex-shrink: 0;
}

@keyframes lp-spin {
  to { transform: rotate(360deg); }
}
.lp-error {
  padding: 1rem;
  background: #fff5f5;
  border: 1px solid #fca5a5;
  border-radius: 6px;
  color: #b91c1c;
  font-size: 0.88rem;
  margin-bottom: 1rem;
}

/* Generated plan text */
#lp-result-body {
  font-size: 0.88rem;
  line-height: 1.65;
  color: var(--text-dark, #111827);
}
#lp-result-body h2 {
  font-size: 0.95rem;
  font-weight: 700;
  margin: 1.1rem 0 0.3rem;
  color: var(--green-dark, #2d6a4f);
  border-bottom: 1px solid var(--border, #e5e7eb);
  padding-bottom: 0.2rem;
}
#lp-result-body h3 {
  font-size: 0.88rem;
  font-weight: 700;
  margin: 0.8rem 0 0.2rem;
}
#lp-result-body p  { margin: 0.3rem 0; }
#lp-result-body ul, #lp-result-body ol {
  margin: 0.3rem 0 0.3rem 1.3rem;
  padding: 0;
}
#lp-result-body li { margin-bottom: 0.2rem; }

/* Result actions */
.lp-result-actions {
  display: flex;
  gap: 0.6rem;
  padding: 0.75rem 0 0.9rem;
  border-top: 1px solid var(--border, #e5e7eb);
  margin-top: 0.75rem;
  background: var(--surface, #fff);
  position: sticky;
  bottom: 0;
}
.lp-btn-back {
  background: var(--surface-alt, #f3f4f6);
  border: 1px solid var(--border, #d1d5db);
  border-radius: 6px;
  padding: 0.42rem 0.9rem;
  font-size: 0.85rem;
  cursor: pointer;
  color: var(--text-dark, #111827);
}
.lp-btn-back:hover { background: var(--border, #e5e7eb); }
.lp-btn-copy, .lp-btn-print {
  background: var(--green-dark, #2d6a4f);
  color: #fff;
  border: none;
  border-radius: 6px;
  padding: 0.42rem 0.9rem;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s;
  margin-left: auto;
}
.lp-btn-copy  { margin-left: auto; }
.lp-btn-print { margin-left: 0; }
.lp-btn-copy:hover, .lp-btn-print:hover { background: var(--green-mid, #40916c); }