* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  color: #1b2430;
  background: #fbf9f3;
}

.hidden { display: none !important; }

.a-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 28px;
  background: #1b2430;
  color: #fdfbf6;
}

.a-brand { font-weight: 700; }
.a-status { font-size: 13px; color: #d8c48a; }

#a-app { max-width: 1100px; margin: 0 auto; padding: 28px 24px 60px; }

.a-layout { display: grid; grid-template-columns: 1.6fr 1fr; gap: 20px; align-items: start; }

.a-editor-col h1 {
  margin: 0 0 6px;
  font-size: 1.5rem;
  font-family: Georgia, "Iowan Old Style", "Palatino Linotype", "Book Antiqua", serif;
}
.a-prompt { background: #f4ead2; border: 1px solid #ecdfc0; border-radius: 8px; padding: 12px 14px; font-size: 0.92rem; }
.a-muted { color: #6b6456; font-size: 0.85rem; }
.a-flag { color: #a3403a; font-size: 0.85rem; font-weight: 700; }

.a-lang-row {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.82rem;
  font-weight: 600;
  color: #6b6456;
  margin: 12px 0 4px;
}
.a-lang-row select {
  padding: 5px 8px;
  border: 1px solid #e4dfd0;
  border-radius: 6px;
  font-size: 0.85rem;
  font-family: inherit;
  background: #fffdf8;
  color: #1b2430;
}

#a-content {
  width: 100%;
  min-height: 420px;
  margin-top: 14px;
  padding: 16px;
  border: 1px solid #e4dfd0;
  border-radius: 10px;
  font-size: 15px;
  line-height: 1.6;
  font-family: inherit;
  resize: vertical;
  background: #fffdf8;
}

.a-toolbar {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-top: 10px;
  flex-wrap: wrap;
}

.a-toolbar-spacer { flex: 1; }

.a-btn {
  border: none;
  border-radius: 7px;
  padding: 9px 16px;
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  font-family: inherit;
}

.a-btn-primary { background: #1b2430; color: #fdfbf6; }
.a-btn-primary:hover { background: #262f3d; }
.a-btn-ghost { background: #f4ead2; color: #1b2430; border: 1px solid #ecdfc0; }
.a-btn-ghost:hover { background: #efe1bc; }

.a-panel {
  background: #fffdf8;
  border: 1px solid #e4dfd0;
  border-radius: 10px;
  padding: 18px;
  font-size: 13.5px;
  line-height: 1.55;
  min-height: 200px;
  position: sticky;
  top: 20px;
}

.a-panel .ll-section { margin-bottom: 14px; }
.a-panel .ll-label { display: block; font-size: 10px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.06em; color: #8d8672; margin-bottom: 4px; }
.a-panel .ll-hint-list { margin: 0; padding-left: 18px; }
.a-panel .ll-hint-list li { margin-bottom: 8px; }
.a-panel .ll-error { color: #a3403a; }

.a-panel .ll-followup-thread:not(:empty) {
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px solid #e4dfd0;
}
.a-panel .ll-followup-you {
  background: #f4ead2;
  border-left: 3px solid #a6802d;
  border-radius: 4px;
  padding: 8px 10px;
  font-size: 13px;
  color: #1b2430;
  margin-bottom: 10px;
}
.a-panel .ll-followup-answer { margin-bottom: 16px; }
.a-panel .ll-followup-row {
  display: flex;
  gap: 6px;
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px solid #e4dfd0;
}
.a-panel .ll-followup-input {
  flex: 1;
  min-width: 0;
  padding: 7px 10px;
  border: 1px solid #e4dfd0;
  border-radius: 6px;
  font-size: 13px;
  font-family: inherit;
  color: #1b2430;
  background: #fff;
}
.a-panel .ll-followup-input:disabled { opacity: 0.6; }
.a-panel .ll-followup-btn {
  border: none;
  background: #1b2430;
  color: #f4ead2;
  font-size: 12.5px;
  font-weight: 600;
  padding: 0 14px;
  border-radius: 6px;
  cursor: pointer;
}
.a-panel .ll-followup-btn:hover { background: #262f3d; }
.a-panel .ll-followup-btn:disabled { opacity: 0.6; cursor: default; }

.a-autosave {
  font-size: 0.82rem;
  color: #6b6456;
  background: #f4ead2;
  border: 1px solid #ecdfc0;
  border-radius: 7px;
  padding: 8px 11px;
  margin: 12px 0 0;
}

.a-btn-done { background: #e3ede3; border-color: #cfe0cf; color: #3d6b42; }

.assignment-level { display: block; font-size: 13px; color: #6b7280; margin-bottom: 12px; }

.assignment-level select {
  display: block;
  /* Matches the practice page: enough air between the label and the box that
     they read as a pair rather than as one crowded block. */
  margin-top: 6px;
  max-width: 420px;
  width: 100%;
  padding: 8px 11px;
  border: 1px solid #ddd7c8;
  border-radius: 8px;
  font: inherit;
  font-size: 13px;
}

.assignment-level .field-hint { display: block; margin-top: 5px; font-size: 12px; }