/* ====== قواعد إضافية لمشروع دراسة ====== */

/* 📚 Grammar Links — كباسات القواعد المرتبطة بالدروس */
.grammar-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 16px 0;
}

.grammar-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 20px;
  background: linear-gradient(135deg, #EEF2FF 0%, #E0E7FF 100%);
  border: 1px solid rgba(79, 70, 229, 0.2);
  border-radius: 16px;
  color: #4338CA;
  font-size: 0.9rem;
  font-weight: 500;
  text-decoration: none;
  box-shadow: 0 4px 6px rgba(79, 70, 229, 0.08), 0 2px 4px rgba(79, 70, 229, 0.04);
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  cursor: pointer;
  backdrop-filter: blur(4px);
}

.grammar-btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 16px rgba(79, 70, 229, 0.15), 0 4px 8px rgba(79, 70, 229, 0.08);
  border-color: rgba(79, 70, 229, 0.4);
  background: linear-gradient(135deg, #E0E7FF 0%, #C7D2FE 100%);
  color: #3730A3;
}

.grammar-btn:active {
  transform: translateY(-1px);
  box-shadow: 0 2px 4px rgba(79, 70, 229, 0.1);
}

.grammar-btn .emoji {
  font-size: 1.2em;
  line-height: 1;
}

/* ====== أقسام القواعد حسب المستوى ====== */
.grammar-section {
  margin: 24px 0;
  padding: 20px 24px;
  border-radius: 16px;
  background: var(--md-default-bg-color);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.grammar-section h3 {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 0;
  margin-bottom: 12px;
  font-size: 1.1rem;
}

/* ====== تحسينات عامة ====== */
.md-typeset a {
  word-break: break-word;
}

/* تحسين ظهور الجداول على الشاشات الضيقة */
@media screen and (max-width: 76.1875em) {
  .grammar-links {
    flex-direction: column;
  }
  .grammar-btn {
    width: 100%;
    justify-content: center;
  }
}

/* ====== الوضع المظلم (Dark Mode) ====== */
[data-md-color-scheme="slate"] .grammar-btn {
  background: linear-gradient(135deg, #1E1B4B 0%, #312E81 100%);
  border-color: rgba(129, 140, 248, 0.2);
  color: #A5B4FC;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.2);
}

[data-md-color-scheme="slate"] .grammar-btn:hover {
  background: linear-gradient(135deg, #312E81 0%, #3730A3 100%);
  border-color: rgba(129, 140, 248, 0.4);
  color: #C7D2FE;
  box-shadow: 0 8px 16px rgba(0, 0, 0, 0.3);
}

[data-md-color-scheme="slate"] .grammar-section {
  background: var(--md-default-bg-color);
}

/* ====== تمارين تفاعلية (Interactive Exercises) ====== */

/* Container — Claymorphism card */
.exercise {
  margin: 24px 0;
  padding: 24px;
  background: linear-gradient(135deg, #F8FAFC 0%, #EEF2FF 100%);
  border: 1px solid rgba(79, 70, 229, 0.15);
  border-radius: 16px;
  box-shadow: 0 4px 12px rgba(79, 70, 229, 0.06), 0 2px 4px rgba(79, 70, 229, 0.03);
  transition: box-shadow 0.3s ease;
  position: relative;
}

.exercise:hover {
  box-shadow: 0 6px 20px rgba(79, 70, 229, 0.10), 0 3px 8px rgba(79, 70, 229, 0.05);
}

/* Table inside exercise */
.exercise table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  margin: 8px 0 !important;
  border-radius: 12px;
  overflow: hidden;
}

.exercise table th {
  background: linear-gradient(135deg, #4F46E5 0%, #6366F1 100%);
  color: #FFFFFF;
  font-weight: 600;
  padding: 12px 16px;
  text-align: center;
  border: none;
}

.exercise table td {
  padding: 10px 12px;
  border-bottom: 1px solid #E2E8F0;
  vertical-align: middle;
  text-align: center;
}

.exercise table tbody tr:last-child td {
  border-bottom: none;
}

.exercise table tbody tr:nth-child(even) {
  background: rgba(238, 242, 255, 0.5);
}

/* Input fields — text */
.exercise-input {
  width: 90%;
  max-width: 260px;
  padding: 8px 12px;
  font-size: 1rem;
  font-family: inherit;
  border: 2px solid #CBD5E1;
  border-radius: 10px;
  background: #FFFFFF;
  color: #1E293B;
  transition: all 0.25s ease;
  outline: none;
  text-align: center;
  direction: ltr;
}

.exercise-input:focus {
  border-color: #4F46E5;
  box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.15);
}

.exercise-input.correct {
  border-color: #16A34A;
  background: #F0FDF4;
  box-shadow: 0 0 0 3px rgba(22, 163, 74, 0.12);
}

.exercise-input.wrong {
  border-color: #DC2626;
  background: #FEF2F2;
  box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.10);
}

.exercise-input:disabled {
  opacity: 0.7;
  cursor: not-allowed;
}

/* Radio buttons — choice */
.exercise-radio-label {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 6px 12px;
  margin: 2px;
  border-radius: 8px;
  border: 1px solid #CBD5E1;
  background: #FFFFFF;
  cursor: pointer;
  transition: all 0.2s ease;
  font-size: 0.9rem;
}

.exercise-radio-label:hover {
  border-color: #818CF8;
  background: #EEF2FF;
}

.exercise-radio-label input[type="radio"] {
  margin: 0;
  accent-color: #4F46E5;
}

.exercise-radio-label.correct-highlight {
  border-color: #16A34A;
  background: #F0FDF4;
  font-weight: 600;
}

.exercise-radio-label.wrong-highlight {
  border-color: #DC2626;
  background: #FEF2F2;
}

.exercise-radio-label input[type="radio"]:disabled {
  cursor: not-allowed;
}

/* Select dropdown — match */
.exercise-select {
  padding: 6px 12px;
  font-size: 0.95rem;
  font-family: inherit;
  border: 2px solid #CBD5E1;
  border-radius: 8px;
  background: #FFFFFF;
  color: #1E293B;
  cursor: pointer;
  outline: none;
  transition: all 0.2s ease;
  min-width: 80px;
}

.exercise-select:focus {
  border-color: #4F46E5;
  box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.15);
}

.exercise-select.correct {
  border-color: #16A34A;
  background: #F0FDF4;
}

.exercise-select.wrong {
  border-color: #DC2626;
  background: #FEF2F2;
}

.exercise-select:disabled {
  opacity: 0.7;
  cursor: not-allowed;
}

/* Check button */
.exercise-check-btn {
  display: block;
  margin: 20px auto 0;
  padding: 12px 36px;
  font-size: 1.05rem;
  font-weight: 600;
  font-family: inherit;
  color: #FFFFFF;
  background: linear-gradient(135deg, #4F46E5 0%, #6366F1 100%);
  border: none;
  border-radius: 14px;
  cursor: pointer;
  box-shadow: 0 4px 10px rgba(79, 70, 229, 0.25), 0 2px 4px rgba(79, 70, 229, 0.10);
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

.exercise-check-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(79, 70, 229, 0.30), 0 4px 8px rgba(79, 70, 229, 0.12);
}

.exercise-check-btn:active {
  transform: translateY(0);
  box-shadow: 0 2px 6px rgba(79, 70, 229, 0.20);
}

.exercise-check-btn.reset-mode {
  background: linear-gradient(135deg, #F59E0B 0%, #FBBF24 100%);
  box-shadow: 0 4px 10px rgba(245, 158, 11, 0.25);
}

.exercise-check-btn.reset-mode:hover {
  background: linear-gradient(135deg, #D97706 0%, #F59E0B 100%);
  box-shadow: 0 8px 20px rgba(245, 158, 11, 0.30);
}

/* Score display */
.exercise-results {
  margin-top: 16px;
  animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

.score-display {
  padding: 16px 20px;
  border-radius: 12px;
  margin-bottom: 12px;
  text-align: center;
  font-size: 1.15rem;
  font-weight: 500;
}

.score-display strong {
  font-size: 1.4rem;
  font-weight: 700;
}

.score-label {
  display: block;
  margin-top: 4px;
  font-size: 1rem;
  font-weight: 400;
}

.score-great {
  background: #F0FDF4;
  border: 1px solid #BBF7D0;
  color: #166534;
}

.score-good {
  background: #FEF9C3;
  border: 1px solid #FDE68A;
  color: #854D0E;
}

.score-needs-work {
  background: #FEF2F2;
  border: 1px solid #FECACA;
  color: #991B1B;
}

/* Review list — per-question comparison */
.exercise-review-list {
  margin-top: 8px;
}

.review-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  margin: 6px 0;
  background: #FEF2F2;
  border: 1px solid #FECACA;
  border-radius: 10px;
  font-size: 0.95rem;
  line-height: 1.6;
  direction: ltr;
  text-align: left;
}

.review-item[dir="auto"],
.md-typeset .review-item {
  direction: ltr;
  text-align: left;
}

.review-wrong-mark {
  font-size: 1.1rem;
  flex-shrink: 0;
}

.review-user-answer {
  color: #DC2626;
  text-decoration: line-through;
  font-weight: 600;
}

.review-correct-answer {
  color: #16A34A;
  font-weight: 700;
}

.review-all-correct {
  text-align: center;
  padding: 12px;
  font-size: 1.2rem;
  font-weight: 600;
  color: #166534;
}

/* Answer comparison below input (inline) */
.answer-comparison {
  margin-top: 4px;
  font-size: 0.8rem;
  color: #DC2626;
  direction: ltr;
  text-align: center;
}

.answer-comparison strong {
  color: #16A34A;
  font-weight: 700;
}

/* ====== Dark mode ====== */
[data-md-color-scheme="slate"] .exercise {
  background: linear-gradient(135deg, #1E1B4B 0%, #1E293B 100%);
  border-color: rgba(129, 140, 248, 0.15);
}

[data-md-color-scheme="slate"] .exercise table th {
  background: linear-gradient(135deg, #4338CA 0%, #4F46E5 100%);
}

[data-md-color-scheme="slate"] .exercise table td {
  border-bottom-color: #334155;
}

[data-md-color-scheme="slate"] .exercise table tbody tr:nth-child(even) {
  background: rgba(30, 41, 59, 0.5);
}

[data-md-color-scheme="slate"] .exercise-input {
  background: #1E293B;
  border-color: #475569;
  color: #E2E8F0;
}

[data-md-color-scheme="slate"] .exercise-input:focus {
  border-color: #818CF8;
  box-shadow: 0 0 0 3px rgba(129, 140, 248, 0.15);
}

[data-md-color-scheme="slate"] .exercise-input.correct {
  border-color: #22C55E;
  background: #052E16;
}

[data-md-color-scheme="slate"] .exercise-input.wrong {
  border-color: #EF4444;
  background: #450A0A;
}

[data-md-color-scheme="slate"] .exercise-radio-label {
  background: #1E293B;
  border-color: #475569;
  color: #E2E8F0;
}

[data-md-color-scheme="slate"] .exercise-radio-label:hover {
  border-color: #818CF8;
  background: #312E81;
}

[data-md-color-scheme="slate"] .exercise-radio-label.correct-highlight {
  border-color: #22C55E;
  background: #052E16;
}

[data-md-color-scheme="slate"] .exercise-radio-label.wrong-highlight {
  border-color: #EF4444;
  background: #450A0A;
}

[data-md-color-scheme="slate"] .exercise-select {
  background: #1E293B;
  border-color: #475569;
  color: #E2E8F0;
}

[data-md-color-scheme="slate"] .exercise-select:focus {
  border-color: #818CF8;
}

[data-md-color-scheme="slate"] .exercise-select.correct {
  border-color: #22C55E;
  background: #052E16;
}

[data-md-color-scheme="slate"] .exercise-select.wrong {
  border-color: #EF4444;
  background: #450A0A;
}

[data-md-color-scheme="slate"] .score-great {
  background: #052E16;
  border-color: #166534;
  color: #BBF7D0;
}

[data-md-color-scheme="slate"] .score-good {
  background: #422006;
  border-color: #713F12;
  color: #FDE68A;
}

[data-md-color-scheme="slate"] .score-needs-work {
  background: #450A0A;
  border-color: #7F1D1D;
  color: #FECACA;
}

[data-md-color-scheme="slate"] .review-item {
  background: #450A0A;
  border-color: #7F1D1D;
}

[data-md-color-scheme="slate"] .review-all-correct {
  color: #BBF7D0;
}

/* ====== Responsive ====== */
@media screen and (max-width: 76.1875em) {
  .exercise {
    padding: 16px;
  }
  .exercise table {
    font-size: 0.9rem;
  }
  .exercise table th,
  .exercise table td {
    padding: 8px 6px;
  }
  .exercise-input {
    width: 100%;
    max-width: none;
    font-size: 0.9rem;
  }
  .exercise-check-btn {
    width: 100%;
    text-align: center;
  }
}