/* PK Exam — Plugin-specific styles (design system base is in pk-design-system.css) */

.pk-exams-wrap,
.pk-exam-start-wrap,
.pk-result-wrap,
.pk-leaderboard-wrap { margin: 20px 0; }

.pk-section-title {
    font-size: 1.4em; margin: 0 0 15px;
    border-bottom: 2px solid var(--pk-primary, #6366f1);
    padding-bottom: 8px; color: var(--pk-text, #1e293b);
    font-family: var(--pk-font-sans, 'Inter', sans-serif);
}

/* ── Exam list grid ─────────────────────────────────────── */
.pk-exams-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 20px; }
.pk-exam-card { display: flex; flex-direction: column; }
.pk-exam-title { margin: 0 0 10px; font-size: 1.05em; line-height: 1.35; }
.pk-exam-title a { color: var(--pk-primary, #6366f1); text-decoration: none; }
.pk-exam-title a:hover { text-decoration: underline; color: var(--pk-primary-dark, #4f46e5); }
.pk-exam-excerpt { color: var(--pk-text-secondary, #64748b); font-size: .9em; margin: 0 0 12px; flex: 1; line-height: 1.5; }

/* ── Meta chips ─────────────────────────────────────────── */
.pk-exam-meta { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 12px; }
.pk-meta-item { background: var(--pk-bg, #f8fafc); border-radius: 4px; padding: 4px 10px; font-size: .82em; color: var(--pk-text-secondary, #64748b); white-space: nowrap; }
.pk-exam-cats { margin-bottom: 14px; display: flex; flex-wrap: wrap; gap: 4px; }
.pk-tag { display: inline-block; background: var(--pk-primary-bg, #eef2ff); color: var(--pk-primary, #6366f1); border-radius: 3px; padding: 2px 8px; font-size: .8em; }

/* ── Exam start card ────────────────────────────────────── */
.pk-exam-info-card { max-width: 520px; }
.pk-exam-info-title { margin: 0 0 12px; font-size: 1.25em; color: var(--pk-text, #1e293b); }
.pk-exam-info-desc { color: var(--pk-text-secondary, #64748b); font-size: .9em; margin: 0 0 16px; line-height: 1.5; }
.pk-exam-info-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-bottom: 20px; }
.pk-info-item { background: var(--pk-bg, #f8fafc); border: 1px solid var(--pk-border, #e2e8f0); border-radius: 6px; padding: 12px; text-align: center; }
.pk-info-value { font-size: 1.5em; font-weight: 700; color: var(--pk-primary, #6366f1); line-height: 1.2; }
.pk-info-label { font-size: .8em; color: var(--pk-text-muted, #94a3b8); margin-top: 4px; }

/* ── Result ─────────────────────────────────────────────── */
.pk-result-wrap { text-align: center; padding: 30px 20px; }
.pk-result-exam-title { margin: 0 0 16px; font-size: 1.2em; }
.pk-score-circle { width: 120px; height: 120px; border-radius: 50%; border: 6px solid var(--pk-primary, #6366f1); display: flex; flex-direction: column; align-items: center; justify-content: center; margin: 20px auto; background: var(--pk-primary-bg, #eef2ff); }
.pk-score-value { font-size: 2em; font-weight: 700; color: var(--pk-primary, #6366f1); line-height: 1; }
.pk-score-total { font-size: .85em; color: var(--pk-text-secondary, #64748b); margin-top: 2px; }
.pk-score-pct { font-size: 1.1em; color: var(--pk-text, #1e293b); margin: 6px 0; }
.pk-result-pass { color: var(--pk-success, #10b981); font-size: 1.3em; font-weight: 700; margin-top: 16px; }
.pk-result-fail { color: var(--pk-danger, #ef4444); font-size: 1.3em; font-weight: 700; margin-top: 16px; }
.pk-result-detail { font-size: .95em; color: var(--pk-text, #1e293b); margin: 8px 0 0; }
.pk-result-date { font-size: .85em; color: var(--pk-text-muted, #94a3b8); margin-top: 10px; }

/* ── Leaderboard ────────────────────────────────────────── */
.pk-leaderboard-table-wrap { overflow-x: auto; }
.pk-leaderboard-table { width: 100%; border-collapse: collapse; min-width: 360px; }
.pk-leaderboard-table th, .pk-leaderboard-table td { padding: 10px 14px; border: 1px solid var(--pk-border, #e2e8f0); text-align: left; font-size: .9em; }
.pk-leaderboard-table th { background: var(--pk-primary, #6366f1); color: #fff; font-weight: 600; white-space: nowrap; }
.pk-leaderboard-table tbody tr:nth-child(even) { background: var(--pk-bg, #f8fafc); }
.pk-leaderboard-table tbody tr:hover { background: var(--pk-primary-bg, #eef2ff); }
.pk-lb-medal { display: inline-block; font-weight: 700; border-radius: 3px; padding: 1px 6px; }
.pk-lb-gold { background: #fff9c4; color: #f9a825; }
.pk-lb-silver { background: #f5f5f5; color: #757575; }
.pk-lb-bronze { background: #fbe9e7; color: #bf360c; }

.pk-error { color: var(--pk-danger, #ef4444); font-style: italic; }
.pk-start-status, .pk-result-loading { font-size: .9em; color: var(--pk-text-secondary, #64748b); }

/* ── Exam taking (answer questions) ────────────────────── */
.pk-exam-taking-wrap { max-width: 720px; margin: 20px 0; }
.pk-exam-taking-header { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 12px; margin-bottom: 20px; position: sticky; top: 0; background: var(--pk-surface, #fff); padding: 10px 0; z-index: 5; border-bottom: 1px solid var(--pk-border, #e2e8f0); }
.pk-exam-countdown { display: flex; align-items: center; gap: 8px; font-size: .95em; }
.pk-countdown-display { font-weight: 700; font-variant-numeric: tabular-nums; font-size: 1.1em; }
.pk-question-card { border: 1px solid var(--pk-border, #e2e8f0); border-radius: 8px; padding: 16px; margin-bottom: 16px; background: var(--pk-surface, #fff); }
.pk-question-header { display: flex; justify-content: space-between; margin-bottom: 8px; font-size: .85em; color: var(--pk-text-muted, #94a3b8); }
.pk-question-index { font-weight: 700; color: var(--pk-primary, #6366f1); }
.pk-question-text { font-size: 1.02em; color: var(--pk-text, #1e293b); line-height: 1.6; margin-bottom: 10px; white-space: pre-wrap; }
.pk-question-image { max-width: 100%; border-radius: 6px; margin-bottom: 10px; }
.pk-subquestion-list { margin: 0 0 10px 20px; color: var(--pk-text-secondary, #64748b); font-size: .95em; }
.pk-mcq-options { display: flex; flex-direction: column; gap: 8px; }
.pk-mcq-option { display: flex; align-items: center; gap: 8px; padding: 8px 10px; border: 1px solid var(--pk-border, #e2e8f0); border-radius: 6px; cursor: pointer; }
.pk-mcq-option:hover { background: var(--pk-bg, #f8fafc); }
.pk-answer-textarea { width: 100%; border: 1px solid var(--pk-border, #e2e8f0); border-radius: 6px; padding: 10px; font-family: inherit; font-size: .98em; resize: vertical; }
.pk-exam-submit-bar { position: sticky; bottom: 0; background: var(--pk-surface, #fff); border-top: 1px solid var(--pk-border, #e2e8f0); padding: 14px 0; display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.pk-save-status { font-size: .85em; color: var(--pk-success, #10b981); min-height: 1.2em; }

@media (max-width: 480px) {
    .pk-exam-info-grid, .pk-exams-grid { grid-template-columns: 1fr; }
    .pk-score-circle { width: 96px; height: 96px; }
    .pk-score-value { font-size: 1.6em; }
}

/* ── Countdown timer ────────────────────────────────── */
.pk-exam-countdown { display: flex; align-items: center; gap: 12px; margin: 16px 0; padding: 12px 16px; background: var(--pk-bg,#f8fafc); border-radius: var(--pk-radius,8px); border: 1px solid var(--pk-border,#e2e8f0); }
.pk-countdown-label { font-size: .9em; color: var(--pk-text-secondary,#64748b); }
.pk-countdown-display { font-family: var(--pk-font-mono,'JetBrains Mono','Courier New',monospace); font-size: 1.6em; font-weight: 700; transition: color .5s; }
/* ── Confetti container ─────────────────────────────── */
#pk-confetti-wrap { position: fixed; top: 0; left: 0; width: 0; height: 0; pointer-events: none; z-index: 9999; }