/* ═══════════════════════════════════════════════════════════════
   sm-drawer.css — SenseMake.uk Shared Framework
   Slide-out info drawer + teacher notes modal
   ═══════════════════════════════════════════════════════════════ */

/* ── Help trigger button ───────────────────────────────────────── */
.sm-help-btn {
  position: fixed;
  top: calc(var(--sm-top-offset) + 8px);
  right: 12px;
  z-index: 200;
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 5px 12px;
  background: var(--sm-surface);
  color: var(--sm-text);
  border: 1.5px solid var(--sm-border);
  border-radius: 7px;
  font-family: var(--sm-font);
  font-size: 11px;
  font-weight: 600;
  cursor: pointer;
  transition: background var(--sm-transition-fast), border-color var(--sm-transition-fast);
  user-select: none;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
}
.sm-help-btn:hover {
  background: var(--sm-surface-raised);
  border-color: var(--sm-text-muted);
}
.sm-help-btn .sm-icon {
  width: 14px;
  height: 14px;
}

/* ── Drawer overlay ────────────────────────────────────────────── */
.sm-drawer-overlay {
  display: none;
  position: fixed;
  top: var(--sm-top-offset);
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.2);
  z-index: 250;
}
.sm-drawer-overlay.open { display: block; }

[data-theme="dark"] .sm-drawer-overlay {
  background: rgba(0, 0, 0, 0.4);
}

/* ── Drawer panel ──────────────────────────────────────────────── */
.sm-drawer {
  position: fixed;
  top: var(--sm-top-offset);
  right: 0;
  bottom: 0;
  width: 340px;
  max-width: 90vw;
  background: var(--sm-surface);
  box-shadow: -4px 0 20px rgba(0, 0, 0, 0.12);
  z-index: 300;
  transform: translateX(100%);
  transition: transform 0.28s cubic-bezier(0.4, 0, 0.2, 1);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
.sm-drawer.open { transform: translateX(0); }

[data-theme="dark"] .sm-drawer {
  box-shadow: -4px 0 20px rgba(0, 0, 0, 0.4);
}

/* ── Drawer header ─────────────────────────────────────────────── */
.sm-drawer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px 10px;
  border-bottom: 1px solid var(--sm-border);
  background: var(--sm-surface-raised);
  flex-shrink: 0;
}
.sm-drawer-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--sm-text);
  margin: 0;
  line-height: 1.3;
}
.sm-drawer-subtitle {
  font-size: 11px;
  color: var(--sm-text-muted);
  margin: 2px 0 0;
}

.sm-drawer-close {
  background: none;
  border: none;
  font-size: 16px;
  color: var(--sm-text-muted);
  cursor: pointer;
  padding: 4px 6px;
  border-radius: 4px;
  line-height: 1;
  transition: background var(--sm-transition-fast), color var(--sm-transition-fast);
}
.sm-drawer-close:hover {
  background: var(--sm-border);
  color: var(--sm-text);
}

/* ── Drawer body ───────────────────────────────────────────────── */
.sm-drawer-body {
  flex: 1;
  padding: 14px 16px;
  overflow-y: auto;
  font-size: 13px;
  color: var(--sm-text);
  line-height: 1.65;
}

.sm-drawer-body h3 {
  font-size: 13px;
  font-weight: 700;
  color: var(--sm-text);
  margin: 16px 0 6px;
}
.sm-drawer-body h3:first-child { margin-top: 0; }

.sm-drawer-body p {
  margin: 0 0 10px;
}

.sm-drawer-body ol,
.sm-drawer-body ul {
  padding-left: 18px;
  margin: 0 0 10px;
}
.sm-drawer-body li {
  margin-bottom: 5px;
  color: var(--sm-text);
}
.sm-drawer-body li strong {
  color: var(--sm-text);
}

.sm-drawer-divider {
  border: none;
  border-top: 1px solid var(--sm-border);
  margin: 14px 0;
}

/* ── Questions list ────────────────────────────────────────────── */
.sm-questions-list {
  padding-left: 18px;
}
.sm-questions-list li {
  color: var(--sm-text-muted);
  margin-bottom: 6px;
  font-style: italic;
}

/* ── Teacher Notes link (bottom of drawer) ─────────────────────── */
.sm-drawer-footer {
  flex-shrink: 0;
  padding: 10px 16px;
  border-top: 1px solid var(--sm-border);
  background: var(--sm-surface-raised);
}

.sm-notes-link {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 10px;
  border: 1.5px solid var(--sm-border);
  border-radius: 6px;
  background: var(--sm-surface);
  color: var(--sm-text);
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: background var(--sm-transition-fast), border-color var(--sm-transition-fast);
  width: 100%;
  text-align: left;
  font-family: var(--sm-font);
}
.sm-notes-link:hover {
  background: var(--sm-surface-raised);
  border-color: var(--sm-text-muted);
}

.sm-notes-link .sm-icon {
  width: 14px;
  height: 14px;
}

.sm-notes-dot {
  width: 6px;
  height: 6px;
  background: var(--sm-indigo);
  border-radius: 50%;
  margin-left: auto;
  display: none;
}
.sm-notes-dot.visible { display: block; }

/* ── Teacher Notes Modal ───────────────────────────────────────── */
.sm-notes-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.4);
  z-index: 500;
  align-items: center;
  justify-content: center;
}
.sm-notes-overlay.open {
  display: flex;
}

[data-theme="dark"] .sm-notes-overlay {
  background: rgba(0, 0, 0, 0.6);
}

.sm-notes-modal {
  width: 90%;
  max-width: 520px;
  max-height: 80vh;
  background: var(--sm-surface);
  border-radius: 12px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

[data-theme="dark"] .sm-notes-modal {
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
}

.sm-notes-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  border-bottom: 1px solid var(--sm-border);
}
.sm-notes-header h3 {
  margin: 0;
  font-size: 14px;
  font-weight: 700;
  color: var(--sm-text);
}
.sm-notes-close {
  background: none;
  border: none;
  font-size: 18px;
  color: var(--sm-text-muted);
  cursor: pointer;
  padding: 2px 6px;
  border-radius: 4px;
  line-height: 1;
}
.sm-notes-close:hover {
  background: var(--sm-border);
  color: var(--sm-text);
}

.sm-notes-body {
  flex: 1;
  padding: 14px 16px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  overflow-y: auto;
}

.sm-notes-textarea {
  width: 100%;
  min-height: 200px;
  padding: 10px 12px;
  border: 1.5px solid var(--sm-border);
  border-radius: 8px;
  background: var(--sm-bg);
  color: var(--sm-text);
  font-family: var(--sm-font);
  font-size: 13px;
  line-height: 1.6;
  resize: vertical;
  transition: border-color var(--sm-transition-fast);
}
.sm-notes-textarea:focus {
  outline: none;
  border-color: var(--sm-indigo);
}
.sm-notes-textarea::placeholder {
  color: var(--sm-text-muted);
}

.sm-notes-actions {
  display: flex;
  justify-content: space-between;
  padding: 10px 16px;
  border-top: 1px solid var(--sm-border);
  gap: 8px;
}

.sm-notes-clear {
  padding: 6px 14px;
  border: 1.5px solid var(--sm-border);
  border-radius: 6px;
  background: var(--sm-surface);
  color: var(--sm-incorrect);
  font-family: var(--sm-font);
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: background var(--sm-transition-fast);
}
.sm-notes-clear:hover {
  background: var(--sm-incorrect-bg);
}

.sm-notes-save {
  padding: 6px 14px;
  border: none;
  border-radius: 6px;
  background: var(--sm-indigo);
  color: #fff;
  font-family: var(--sm-font);
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: background var(--sm-transition-fast);
}
.sm-notes-save:hover {
  background: var(--sm-indigo-hover);
}