/* English Grammar Exercises v1.0.1 */

.egx-exercise {
  box-sizing: border-box;
  width: 100%;
  margin: 0;
  font-family: inherit;
  font-size: 15px;
  line-height: 1.35;
  --egx-surface: #ffffff;
  --egx-border: rgba(17, 24, 39, 0.18);
  --egx-text: #111827;
  --egx-muted: #6b7280;
  --egx-green: rgba(22, 163, 74, 0.85);
  --egx-green-bg: rgba(22, 163, 74, 0.12);
  --egx-red: rgba(220, 38, 38, 0.85);
  --egx-red-bg: rgba(220, 38, 38, 0.12);
  --egx-blue: rgba(37, 99, 235, 0.85);
  --egx-blue-bg: rgba(37, 99, 235, 0.10);
  /* Brand accent (lighter than #5b9b3c for hover/selection) */
  --egx-accent: #74aa59;
  --egx-accent-bg: rgba(116, 170, 89, 0.12);
}

.egx-exercise * {
  box-sizing: border-box;
}

.egx-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 6px 0 10px 0;
  flex-wrap: wrap;
}

.egx-instructions {
  display: flex;
  align-items: baseline;
  gap: 10px;
  flex-wrap: wrap;
  min-width: 0;
}

.egx-instructions-text {
  font-weight: 700;
  color: var(--egx-text) !important;
}

.egx-progress {
  color: var(--egx-muted) !important;
  font-weight: 700;
}

.egx-btn {
  appearance: none;
  border: 1px solid var(--egx-border);
  background: #ffffff;
  color: var(--egx-text) !important;
  -webkit-text-fill-color: var(--egx-text);
  border-radius: 10px;
  padding: 8px 12px;
  font-weight: 700;
  font-size: 13px;
  text-transform: none !important;
  line-height: 1.2;
  cursor: pointer;
  transition: transform 80ms ease, box-shadow 80ms ease;
}

.egx-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 18px rgba(17, 24, 39, 0.10);
}

.egx-btn:active {
  transform: translateY(0);
  box-shadow: none;
}

.egx-btn-secondary {
  background: #ffffff;
}

.egx-questions {
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: 0 0 10px 0;
}

.egx-question {
  border: 1px solid rgba(17, 24, 39, 0.12);
  background: #ffffff;
  border-radius: 14px;
  padding: 12px;
}

.egx-q-title {
  font-weight: 800;
  font-size: 16px;
  color: var(--egx-text) !important;
  margin: 0 0 10px 0;
}

.egx-q-note {
  margin: -4px 0 10px 0;
  color: var(--egx-muted) !important;
  font-weight: 600;
  font-size: 13px;
}

.egx-options {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.egx-option {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  text-align: left;
  padding: 10px 12px;
  border-radius: 12px;
  border: 1px solid var(--egx-border);
  background: #ffffff;
  cursor: pointer;
  user-select: none;
  transition: transform 80ms ease, box-shadow 80ms ease;
  color: var(--egx-text) !important;
  -webkit-text-fill-color: var(--egx-text) !important;
  font-weight: 700;
  font-size: 14px;
  text-transform: none !important;
  line-height: 1.3;
}

.egx-option:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 18px rgba(17, 24, 39, 0.10);
}

.egx-option:not(:disabled):hover {
  border-color: var(--egx-accent);
  background: var(--egx-accent-bg);
}

.egx-option:disabled {
  opacity: 0.85;
  cursor: default;
}

.egx-option:disabled:hover {
  transform: none;
  box-shadow: none;
}

.egx-option-check {
  width: 16px;
  height: 16px;
  border-radius: 4px;
  border: 1px solid rgba(17, 24, 39, 0.30);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
  font-size: 12px;
  font-weight: 900;
  color: #ffffff;
}

.egx-option.egx-selected {
  border-color: var(--egx-accent);
  background: var(--egx-accent-bg);
}

.egx-option.egx-correct {
  border-color: var(--egx-green);
  background: var(--egx-green-bg);
}

.egx-option.egx-correct .egx-option-check {
  border-color: var(--egx-green);
  background: var(--egx-green);
}

.egx-option.egx-correct .egx-option-check::after {
  content: "✓";
  line-height: 1;
}

.egx-option.egx-wrong {
  border-color: var(--egx-red);
  background: var(--egx-red-bg);
}

.egx-option.egx-wrong .egx-option-check {
  border-color: var(--egx-red);
  background: var(--egx-red);
}

.egx-option.egx-wrong .egx-option-check::after {
  content: "×";
  line-height: 1;
}

.egx-feedback {
  margin-top: 10px;
  border-radius: 12px;
  border: 1px solid rgba(220, 38, 38, 0.35);
  background: rgba(220, 38, 38, 0.06);
  padding: 10px 12px;
}

.egx-feedback-title {
  font-weight: 900;
  color: rgba(220, 38, 38, 0.95) !important;
  margin: 0 0 6px 0;
}

.egx-feedback-body {
  color: var(--egx-text) !important;
  font-weight: 600;
  font-size: 14px;
}

.egx-finish {
  margin-top: 12px;
}

.egx-finish-box {
  border: 1px solid rgba(17, 24, 39, 0.12);
  background: #ffffff;
  border-radius: 14px;
  padding: 14px;
}

.egx-finish-title {
  font-weight: 900;
  font-size: 16px;
  color: var(--egx-text) !important;
}

.egx-finish-sub {
  margin-top: 6px;
  color: var(--egx-muted) !important;
  font-weight: 700;
}

.egx-finish-actions {
  margin-top: 10px;
}

@keyframes egx-pop {
  0% { transform: scale(1); }
  40% { transform: scale(1.03); }
  100% { transform: scale(1); }
}

@keyframes egx-shake {
  0% { transform: translateX(0); }
  25% { transform: translateX(-4px); }
  50% { transform: translateX(4px); }
  75% { transform: translateX(-3px); }
  100% { transform: translateX(0); }
}

.egx-anim-correct {
  animation: egx-pop 180ms ease;
}

.egx-anim-wrong {
  animation: egx-shake 220ms ease;
}

/* Ensure hidden answers wrapper is actually hidden. */
.egx-answers[hidden] {
  display: none !important;
}