/* ──────────────────────────────────────────────────────────────────
   PohLang Playground – Quiz & Challenges Styles
   ────────────────────────────────────────────────────────────────── */

/* ── Wrappers ─────────────────────────────────────────────────────── */
.quiz-wrapper,
.challenges-wrapper {
  max-width: 860px;
  margin: 0 auto;
  padding: 32px 20px 48px;
  min-height: calc(100vh - 190px);
}

/* ── Difficulty badges ────────────────────────────────────────────── */
.difficulty-beginner     { color: #3fb950; }
.difficulty-intermediate { color: #d29922; }
.difficulty-advanced     { color: #f85149; }

/* ═══════════════════════════════════════════════════════════════════
   QUIZ
   ═══════════════════════════════════════════════════════════════════ */

/* Landing screen */
.quiz-landing {
  text-align: center;
  padding: 48px 24px;
}

.quiz-landing-icon {
  font-size: 72px;
  margin-bottom: 16px;
  animation: float 3s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(-8px); }
}

.quiz-landing h2 {
  font-size: 28px;
  color: var(--text);
  margin-bottom: 12px;
}

.quiz-landing p {
  color: var(--muted);
  font-size: 16px;
  max-width: 480px;
  margin: 0 auto 28px;
  line-height: 1.6;
}

.quiz-features {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 32px;
}

.quiz-feature-item {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px 20px;
  display: flex;
  gap: 8px;
  align-items: center;
  font-size: 14px;
  color: var(--text);
}

.quiz-start-btn {
  font-size: 16px;
  padding: 12px 32px;
}

/* Quiz header (progress / score) */
.quiz-header {
  margin-bottom: 20px;
}

.quiz-progress-bar {
  height: 6px;
  background: var(--border);
  border-radius: 3px;
  overflow: hidden;
  margin-bottom: 10px;
}

.quiz-progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  border-radius: 3px;
  transition: width 0.4s ease;
}

.quiz-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  color: var(--muted);
}

.quiz-streak.hot {
  color: #ff7b39;
  font-weight: 700;
  animation: pulse 0.6s ease infinite alternate;
}

@keyframes pulse {
  from { transform: scale(1); }
  to   { transform: scale(1.15); }
}

/* Quiz card */
.quiz-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 28px;
  animation: slideIn 0.3s ease;
}

@keyframes slideIn {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: translateY(0); }
}

.quiz-card-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
}

.quiz-category {
  font-size: 12px;
  font-weight: 600;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  background: rgba(110,165,255,0.12);
  padding: 4px 10px;
  border-radius: 20px;
}

.quiz-difficulty {
  font-size: 12px;
  font-weight: 600;
  text-transform: capitalize;
}

.quiz-question {
  font-size: 18px;
  color: var(--text);
  line-height: 1.55;
  margin-bottom: 24px;
}

.quiz-question code {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 2px 6px;
  font-family: 'Consolas', 'Monaco', monospace;
  font-size: 15px;
  color: var(--accent-2);
}

/* Answer options */
.quiz-options {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 16px;
}

.quiz-option {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  padding: 12px 16px;
  font-size: 14px;
  text-align: left;
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s, transform 0.1s;
  font-weight: 400;
}

.quiz-option:hover:not(:disabled) {
  border-color: var(--accent);
  background: var(--hover);
  transform: translateX(4px);
}

.quiz-option:disabled {
  cursor: default;
  transform: none;
}

.quiz-option.correct {
  border-color: var(--success);
  background: rgba(63,185,80,0.12);
  color: var(--success);
  font-weight: 600;
}

.quiz-option.incorrect {
  border-color: var(--error);
  background: rgba(248,81,73,0.12);
  color: var(--error);
}

/* Feedback */
.quiz-feedback {
  display: flex;
  gap: 12px;
  padding: 16px;
  border-radius: 8px;
  margin: 16px 0;
  animation: slideIn 0.25s ease;
}

.feedback-correct {
  background: rgba(63,185,80,0.12);
  border: 1px solid rgba(63,185,80,0.3);
}

.feedback-incorrect {
  background: rgba(248,81,73,0.12);
  border: 1px solid rgba(248,81,73,0.3);
}

.feedback-icon {
  font-size: 22px;
  flex-shrink: 0;
}

.feedback-body strong {
  color: var(--text);
  display: block;
  margin-bottom: 4px;
}

.feedback-body p {
  color: var(--muted);
  font-size: 13px;
  margin: 0;
  line-height: 1.5;
}

.feedback-body code {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 1px 5px;
  font-family: monospace;
  font-size: 12px;
  color: var(--accent-2);
}

.quiz-next-btn {
  display: block;
  margin-top: 8px;
  width: 100%;
  padding: 12px;
  font-size: 15px;
}

/* Results */
.quiz-results {
  text-align: center;
  animation: slideIn 0.4s ease;
}

.results-badge {
  display: inline-block;
  font-size: 28px;
  font-weight: 700;
  padding: 12px 28px;
  border-radius: 50px;
  margin-bottom: 16px;
  border: 2px solid transparent;
}

.badge-gold   { background: rgba(210,153,34,0.15); border-color: #d29922; color: #d29922; }
.badge-silver { background: rgba(139,200,255,0.15); border-color: var(--accent-2); color: var(--accent-2); }
.badge-bronze { background: rgba(63,185,80,0.12); border-color: var(--success); color: var(--success); }

.results-title   { font-size: 26px; color: var(--text); margin-bottom: 8px; }
.results-message { color: var(--muted); font-size: 15px; margin-bottom: 24px; }

.results-stats {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 20px;
  margin-bottom: 32px;
}

.results-stat {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px 24px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  min-width: 100px;
}

.stat-value { font-size: 22px; font-weight: 700; color: var(--text); }
.stat-label { font-size: 12px; color: var(--muted); text-transform: uppercase; letter-spacing: 0.5px; }

/* Review list */
.results-review {
  text-align: left;
  margin-bottom: 28px;
}

.results-review h3 {
  font-size: 15px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 12px;
}

.review-item {
  display: flex;
  gap: 10px;
  padding: 10px 12px;
  border-radius: 6px;
  margin-bottom: 6px;
  align-items: flex-start;
  font-size: 13px;
}

.review-correct  { background: rgba(63,185,80,0.08); }
.review-incorrect { background: rgba(248,81,73,0.08); }

.review-icon { flex-shrink: 0; font-size: 15px; }

.review-q { color: var(--text); display: block; }
.review-answer { color: var(--success); font-size: 12px; font-style: italic; display: block; margin-top: 2px; }

/* ═══════════════════════════════════════════════════════════════════
   CHALLENGES
   ═══════════════════════════════════════════════════════════════════ */

.challenges-header {
  margin-bottom: 28px;
}

.challenges-title-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 8px;
}

.challenges-title-row h2 { font-size: 22px; color: var(--text); }

.challenges-score {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 6px 16px;
  font-size: 14px;
  font-weight: 600;
  color: var(--accent);
}

.challenges-desc {
  color: var(--muted);
  font-size: 14px;
  line-height: 1.6;
  margin-bottom: 12px;
}

.challenges-overall-bar {
  height: 6px;
  background: var(--border);
  border-radius: 3px;
  overflow: hidden;
  margin-bottom: 6px;
}

.challenges-overall-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  border-radius: 3px;
  transition: width 0.5s ease;
}

.challenges-progress-text {
  font-size: 12px;
  color: var(--muted);
}

/* Challenge cards grid */
.challenges-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 18px;
}

.challenge-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: border-color 0.2s, transform 0.2s, box-shadow 0.2s;
}

.challenge-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0,0,0,0.3);
}

.challenge-done {
  border-color: rgba(63,185,80,0.4);
  background: rgba(63,185,80,0.04);
}

.challenge-card-top {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.challenge-emoji { font-size: 24px; }
.challenge-difficulty { font-size: 11px; font-weight: 600; text-transform: capitalize; }
.challenge-badge { font-size: 11px; color: var(--success); font-weight: 600; margin-left: auto; }

.challenge-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  margin: 0;
}

.challenge-desc {
  font-size: 13px;
  color: var(--muted);
  line-height: 1.55;
  flex: 1;
}

.challenge-desc code {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 1px 5px;
  font-size: 12px;
  color: var(--accent-2);
  font-family: 'Consolas', monospace;
}

.challenge-points {
  font-size: 12px;
  color: var(--muted);
  font-weight: 500;
}

.challenge-open-btn {
  padding: 9px 14px;
  font-size: 13px;
  border-radius: 6px;
  text-align: center;
}

/* Challenge overlay / modal */
.challenge-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.75);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  animation: fadeIn 0.2s;
}

.challenge-modal {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 14px;
  width: 100%;
  max-width: 900px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: 0 20px 60px rgba(0,0,0,0.5);
  animation: slideIn 0.25s ease;
  display: flex;
  flex-direction: column;
}

.challenge-modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  font-weight: 600;
  color: var(--text);
  font-size: 15px;
  position: sticky;
  top: 0;
  background: var(--panel);
  z-index: 10;
}

.challenge-modal-body {
  display: grid;
  grid-template-columns: 320px 1fr;
  flex: 1;
  overflow: hidden;
}

.challenge-modal-desc {
  padding: 20px;
  border-right: 1px solid var(--border);
  overflow-y: auto;
}

.challenge-modal-desc p {
  color: var(--text);
  font-size: 14px;
  line-height: 1.6;
  margin-bottom: 14px;
}

.challenge-modal-desc code {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 2px 6px;
  font-family: 'Consolas', monospace;
  font-size: 13px;
  color: var(--accent-2);
}

.challenge-hint-details {
  margin-bottom: 14px;
}

.challenge-hint-details summary {
  cursor: pointer;
  color: var(--accent);
  font-size: 13px;
  font-weight: 600;
  padding: 6px 0;
  user-select: none;
}

.challenge-hint-details p {
  margin-top: 8px;
  font-size: 13px;
  color: var(--muted);
  line-height: 1.55;
}

.challenge-expected {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px;
}

.challenge-expected strong {
  font-size: 12px;
  color: var(--muted);
  display: block;
  margin-bottom: 6px;
  text-transform: uppercase;
  letter-spacing: 0.4px;
}

.challenge-expected pre {
  margin: 0;
  background: transparent;
  border: none;
  padding: 0;
  min-height: unset;
  max-height: unset;
  font-size: 13px;
  color: var(--success);
}

/* Challenge editor section */
.challenge-editor-section {
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.challenge-editor-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.challenge-editor {
  flex: 1;
  min-height: 200px;
  background: var(--bg);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 8px;
  font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
  font-size: 13px;
  line-height: 1.6;
  padding: 14px;
  resize: vertical;
  tab-size: 4;
}

.challenge-editor:focus {
  outline: 2px solid var(--accent);
  outline-offset: -1px;
}

.challenge-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.challenge-actions button {
  flex: 1;
  min-width: 100px;
}

.challenge-output {
  margin: 0;
  background: #0a0d12;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 12px;
  min-height: 48px;
  max-height: 120px;
  overflow: auto;
  font-size: 13px;
  color: var(--text);
}

/* Challenge result banner */
.challenge-result {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 500;
  animation: slideIn 0.25s ease;
}

.challenge-result.hidden { display: none; }

.result-pass  { background: rgba(63,185,80,0.15); border: 1px solid rgba(63,185,80,0.4); color: var(--success); }
.result-fail  { background: rgba(248,81,73,0.10); border: 1px solid rgba(248,81,73,0.3); color: var(--error); }
.result-error { background: rgba(210,153,34,0.10); border: 1px solid rgba(210,153,34,0.3); color: var(--warning); }

.result-pass code, .result-fail code {
  background: rgba(255,255,255,0.1);
  border-radius: 3px;
  padding: 1px 5px;
  font-family: monospace;
  font-size: 12px;
}

/* ── Responsive ───────────────────────────────────────────────────── */
@media (max-width: 700px) {
  .challenge-modal-body {
    grid-template-columns: 1fr;
  }

  .challenge-modal-desc {
    border-right: none;
    border-bottom: 1px solid var(--border);
  }

  .challenges-grid {
    grid-template-columns: 1fr;
  }

  .results-stats {
    gap: 12px;
  }

  .quiz-card {
    padding: 18px;
  }

  .quiz-question {
    font-size: 15px;
  }
}