/* ========================================
   LMS: 과정 상세 페이지
   ✦ 2단 레이아웃 + 스티키 사이드바
======================================== */

.cd-page { padding-top: 60px; }

/* ───── 브레드크럼 ───── */
.cd-breadcrumb {
    display: flex; align-items: center; gap: 8px;
    font-size: 17px; color: var(--text-3); margin-bottom: 24px;
}
.cd-breadcrumb a { color: var(--text-3); }
.cd-breadcrumb a:hover { color: var(--primary); }
.cd-breadcrumb i { font-size: 8px; }
.cd-breadcrumb span { color: var(--text); font-weight: 600; }

/* ───── 2단 레이아웃 ───── */
.cd-layout { display: flex; gap: 32px; align-items: flex-start; }
.cd-main { flex: 1; min-width: 0; }
.cd-sidebar { width: 340px; flex-shrink: 0; position: sticky; top: 100px; }

/* ───── 과정 히어로 ───── */
.cd-hero {
    border-radius: var(--radius); overflow: hidden;
    border: 1px solid var(--border-light); margin-bottom: 32px;
}
.cd-hero-visual {
    height: 240px;
    display: flex; align-items: center; justify-content: center;
    font-size: 72px; color: rgba(255,255,255,.3);
    background: linear-gradient(135deg, var(--g1, #667eea), var(--g2, #764ba2));
}
.cd-hero-info { padding: 28px; }
.cd-hero-meta { display: flex; align-items: center; gap: 10px; margin-bottom: 12px; }
.cd-hero-category {
    font-size: 16px; font-weight: 700; color: var(--primary);
    padding: 4px 12px; border-radius: 20px;
    background: var(--primary-bg); border: 1px solid var(--primary-lighter);
}
.cd-hero-badge {
    font-size: 16px; font-weight: 800; padding: 4px 10px; border-radius: 6px;
    color: #fff; letter-spacing: .5px;
}
.cd-hero-badge.hot { background: var(--danger); }
.cd-hero-badge.new { background: var(--success); }
.cd-hero-badge.best { background: var(--warning); }
.cd-hero-title {
    font-size: 30px; font-weight: 800; color: var(--text);
    line-height: 1.4; margin-bottom: 12px; letter-spacing: -.3px;
}
.cd-hero-desc { font-size: 19px; color: var(--text-2); line-height: 1.7; margin-bottom: 20px; }
.cd-hero-stats {
    display: flex; gap: 20px; flex-wrap: wrap;
    font-size: 17px; color: var(--text-3); font-weight: 500; margin-bottom: 16px;
}
.cd-hero-stats i { color: var(--primary-light); margin-right: 4px; }
.cd-hero-rating { display: flex; align-items: center; gap: 8px; }
.cd-hero-rating strong { font-size: 16px; color: var(--warning); }
.cd-hero-rating span { font-size: 17px; color: var(--text-3); }

/* ───── 탭 ───── */
.cd-tabs {
    display: flex; border-bottom: 2px solid var(--border-light);
    margin-bottom: 28px; gap: 0;
}
.cd-tab {
    padding: 14px 24px; font-size: 16px; font-weight: 600;
    color: var(--text-3); background: none; border: none;
    border-bottom: 2px solid transparent; margin-bottom: -2px;
    cursor: pointer; transition: var(--transition);
}
.cd-tab:hover { color: var(--primary); }
.cd-tab.active {
    color: var(--primary);
    border-bottom-color: var(--primary);
}

.cd-tab-content { display: none; }
.cd-tab-content.active { display: block; }

/* ───── 커리큘럼 아코디언 ───── */
.cd-chapter {
    border: 1px solid var(--border-light); border-radius: var(--radius-sm);
    margin-bottom: 12px; overflow: hidden;
}
.cd-chapter-header {
    display: flex; justify-content: space-between; align-items: center;
    padding: 16px 20px; cursor: pointer;
    background: var(--surface-2); transition: var(--transition);
}
.cd-chapter-header:hover { background: var(--surface-3); }
.cd-chapter-title { font-size: 17px; font-weight: 700; color: var(--text); }
.cd-chapter-meta { display: flex; align-items: center; gap: 12px; font-size: 16px; color: var(--text-3); }
.cd-chapter-toggle { transition: transform .3s; }
.cd-chapter.open .cd-chapter-toggle { transform: rotate(180deg); }
.cd-chapter-body { display: none; }
.cd-chapter.open .cd-chapter-body { display: block; }

.cd-lesson {
    display: flex; align-items: center; gap: 12px;
    padding: 12px 20px; border-top: 1px solid var(--border-light);
    font-size: 16px; color: var(--text-2); transition: var(--transition);
}
.cd-lesson:hover { background: var(--primary-bg); }
.cd-lesson-icon {
    width: 32px; height: 32px; border-radius: 8px;
    display: flex; align-items: center; justify-content: center;
    font-size: 16px; flex-shrink: 0;
}
.cd-lesson-icon.video { background: #eef2ff; color: var(--primary); }
.cd-lesson-icon.text { background: #ecfdf5; color: var(--success); }
.cd-lesson-icon.quiz { background: #fffbeb; color: var(--warning); }
.cd-lesson-title { flex: 1; font-weight: 500; }
.cd-lesson-duration { font-size: 16px; color: var(--text-3); }
.cd-lesson-preview {
    font-size: 17px; color: var(--primary); font-weight: 600;
    padding: 3px 10px; border-radius: 20px;
    background: var(--primary-bg);
}

/* ───── 과정소개 ───── */
.cd-desc-content { font-size: 17px; color: var(--text-2); line-height: 1.8; }
.cd-desc-content h2, .cd-desc-content h3 { color: var(--text); margin: 24px 0 12px; }
.cd-desc-content ul, .cd-desc-content ol { padding-left: 24px; margin: 12px 0; }
.cd-desc-content li { margin-bottom: 8px; }

/* ───── 강사소개 ───── */
.cd-instructor-card {
    display: flex; gap: 24px; padding: 24px;
    border: 1px solid var(--border-light); border-radius: var(--radius);
}
.cd-instructor-photo {
    width: 80px; height: 80px; border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    display: flex; align-items: center; justify-content: center;
    font-size: 32px; color: rgba(255,255,255,.7); flex-shrink: 0;
}
.cd-instructor-info { flex: 1; }
.cd-instructor-name { font-size: 18px; font-weight: 700; color: var(--text); margin-bottom: 4px; }
.cd-instructor-bio { font-size: 16px; color: var(--text-2); line-height: 1.6; }

/* ───── 수강후기 ───── */
.cd-review {
    padding: 20px 0; border-bottom: 1px solid var(--border-light);
}
.cd-review:last-child { border-bottom: none; }
.cd-review-header { display: flex; align-items: center; gap: 12px; margin-bottom: 8px; }
.cd-review-name { font-size: 16px; font-weight: 600; color: var(--text); }
.cd-review-date { font-size: 16px; color: var(--text-3); }
.cd-review-content { font-size: 16px; color: var(--text-2); line-height: 1.6; }
.cd-reviews-empty { text-align: center; padding: 40px; color: var(--text-3); font-size: 16px; }

/* ───── 사이드바 ───── */
.cd-sidebar-card {
    background: var(--surface); border-radius: var(--radius);
    border: 1px solid var(--border-light); padding: 28px;
    box-shadow: var(--shadow);
}
.cd-sidebar-price { margin-bottom: 20px; }
.cd-sidebar-discount {
    display: inline-block; padding: 4px 12px; border-radius: 6px;
    background: var(--danger-bg); color: var(--danger);
    font-size: 16px; font-weight: 800; margin-bottom: 8px;
}
.cd-sidebar-final {
    display: block; font-size: 32px; font-weight: 900; color: var(--text);
}
.cd-sidebar-original { font-size: 16px; color: var(--text-3); }
.cd-enroll-btn { width: 100%; font-size: 16px; }
.cd-sidebar-enrolled {
    text-align: center; padding: 16px;
    background: var(--success-bg); border-radius: var(--radius-sm);
}
.cd-sidebar-enrolled i { color: var(--success); font-size: 24px; display: block; margin-bottom: 8px; }
.cd-sidebar-enrolled span { display: block; font-size: 16px; color: var(--success); font-weight: 600; margin-bottom: 12px; }
.cd-sidebar-enrolled .btn { width: 100%; }
.cd-sidebar-info {
    margin-top: 24px; padding-top: 24px;
    border-top: 1px solid var(--border-light);
}
.cd-sidebar-info li {
    display: flex; align-items: center; gap: 12px;
    padding: 10px 0; font-size: 16px; color: var(--text-2);
}
.cd-sidebar-info li i { color: var(--primary-light); width: 16px; text-align: center; }
.cd-sidebar-info li span { flex: 1; }
.cd-sidebar-info li strong { color: var(--text); font-weight: 600; }

.cd-sidebar-refund {
    display: flex; align-items: center; justify-content: center; gap: 6px;
    margin-top: 16px; padding: 10px 0;
    font-size: 17px; font-weight: 600; color: var(--text-3);
    border: 1px solid var(--border-light); border-radius: var(--radius-xs);
    text-decoration: none; transition: var(--transition);
}
.cd-sidebar-refund:hover { color: var(--point); border-color: var(--point); }
.cd-sidebar-refund i { font-size: 16px; }

/* ───── 반응형 ───── */
@media (max-width: 1024px) {
    .cd-layout { flex-direction: column; }
    .cd-sidebar { width: 100%; position: static; order: -1; }
    .cd-hero-visual { height: 180px; }
}
@media (max-width: 768px) {
    .cd-hero-title { font-size: 22px; }
    .cd-hero-stats { gap: 12px; }
    .cd-tabs { overflow-x: auto; }
    .cd-tab { white-space: nowrap; padding: 12px 16px; }
    .cd-instructor-card { flex-direction: column; }
}