/* ===== COURSE CARD (standard) ===== */
.course-card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition-normal);
}
.course-card:hover { box-shadow: var(--shadow-card-hover); transform: translateY(-4px); border-color: transparent; }
.course-card__media { position: relative; aspect-ratio: 4/2.7; overflow: hidden; background: var(--gray-100); }
.course-card__media img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.course-card:hover .course-card__media img { transform: scale(1.06); }
.course-card__price-tag {
  position: absolute; top: 12px; right: 12px;
  background: var(--white); color: var(--primary-900);
  font-weight: 700; font-size: 0.82rem;
  padding: 6px 12px; border-radius: var(--radius-pill);
}
.course-card__price-tag.free { background: var(--success); color: var(--white); }
.course-card__body { padding: var(--space-6); }
.course-card__title { font-family: var(--font-heading); font-size: 1.15rem; margin: var(--space-2) 0 var(--space-2); color: var(--primary-900); }
.course-card__desc { font-size: 0.88rem; color: var(--gray-600); margin-bottom: var(--space-4); }
.course-card__meta { display: flex; align-items: center; justify-content: space-between; font-size: 0.8rem; color: var(--gray-600); border-top: 1px solid var(--gray-100); padding-top: var(--space-4); }
.course-card__lecturer { display: flex; align-items: center; gap: var(--space-2); }
.course-card__lecturer img { width: 26px; height: 26px; border-radius: 50%; object-fit: cover; }
.course-card__rating { color: var(--gold-700); font-weight: 700; }

/* Featured (large) course card */
.course-card--featured { display: grid; grid-template-columns: 1.1fr 1fr; }
.course-card--featured .course-card__media { aspect-ratio: auto; }
.course-card--featured .course-card__body { display: flex; flex-direction: column; justify-content: center; padding: var(--space-8); }
.course-card--featured .course-card__title { font-size: 1.6rem; }
@media (max-width: 767px) { .course-card--featured { grid-template-columns: 1fr; } }

/* Compact course card */
.course-card--compact { display: flex; gap: var(--space-4); border-radius: var(--radius-md); }
.course-card--compact .course-card__media { width: 110px; flex-shrink: 0; aspect-ratio: 1/1; border-radius: var(--radius-md); }
.course-card--compact .course-card__body { padding: var(--space-3) var(--space-3) var(--space-3) 0; }
.course-card--compact .course-card__title { font-size: 0.98rem; margin-top: 0; }

/* ===== LECTURE CARD ===== */
.lecture-card { background: var(--white); border-radius: var(--radius-lg); overflow: hidden; border: 1px solid var(--gray-200); transition: var(--transition-normal); }
.lecture-card:hover { box-shadow: var(--shadow-card-hover); }
.lecture-card__thumb { position: relative; aspect-ratio: 16/9; background: var(--primary-900); overflow: hidden; }
.lecture-card__thumb img { width: 100%; height: 100%; object-fit: cover; opacity: 0.85; }
.play-btn {
  position: absolute; top: 50%; left: 50%; transform: translate(-50%,-50%);
  width: 52px; height: 52px; border-radius: 50%;
  background: rgba(255,255,255,0.92); display: flex; align-items: center; justify-content: center;
  transition: var(--transition-fast);
}
.lecture-card:hover .play-btn { background: var(--gold-500); transform: translate(-50%,-50%) scale(1.08); }
.play-btn svg { width: 18px; height: 18px; fill: var(--primary-900); margin-left: 2px; }
.lecture-card__body { padding: var(--space-5); }
.lecture-card__title { font-family: var(--font-heading); font-size: 1.05rem; color: var(--primary-900); margin-bottom: var(--space-1); }
.lecture-card__meta { font-size: 0.8rem; color: var(--gray-600); display: flex; gap: var(--space-3); flex-wrap: wrap; }

/* ===== LECTURER CARD ===== */
.lecturer-card { text-align: center; background: var(--white); border-radius: var(--radius-lg); border: 1px solid var(--gray-200); padding: var(--space-8) var(--space-6); transition: var(--transition-normal); }
.lecturer-card:hover { box-shadow: var(--shadow-card-hover); transform: translateY(-4px); }
.lecturer-card__portrait { width: 108px; height: 108px; border-radius: 50%; margin: 0 auto var(--space-4); overflow: hidden; border: 3px solid var(--gold-200); }
.lecturer-card__portrait img { width: 100%; height: 100%; object-fit: cover; }
.lecturer-card__name { font-family: var(--font-heading); font-size: 1.15rem; color: var(--primary-900); }
.lecturer-card__role { font-size: 0.85rem; color: var(--gold-700); font-weight: 600; margin: var(--space-1) 0 var(--space-3); }
.lecturer-card__stats { display: flex; justify-content: center; gap: var(--space-6); font-size: 0.78rem; color: var(--gray-600); border-top: 1px solid var(--gray-100); padding-top: var(--space-4); margin-top: var(--space-4); }
.lecturer-card__stats b { display: block; color: var(--primary-900); font-size: 1rem; }
.lecturer-card__social { display: flex; justify-content: center; gap: var(--space-3); margin-top: var(--space-4); }
.lecturer-card__social a { width: 32px; height: 32px; border-radius: 50%; background: var(--gray-50); display: flex; align-items: center; justify-content: center; transition: var(--transition-fast); }
.lecturer-card__social a:hover { background: var(--gold-500); }

/* ===== STATS CARD ===== */
.stat-block { text-align: left; }
.stat-block .num { font-family: var(--font-heading); font-size: 2.6rem; color: var(--gold-600); font-weight: 700; line-height: 1; }
.stat-block .label { font-size: 0.85rem; color: var(--gray-600); margin-top: var(--space-1); }

/* ===== TESTIMONIAL ===== */
.testimonial-quote-mark { font-family: var(--font-heading); font-size: 5rem; color: var(--gold-500); line-height: 0.5; }

/* ===== TABS ===== */
.tabs { display: flex; gap: var(--space-2); border-bottom: 1px solid var(--gray-200); flex-wrap: wrap; }
.tab-btn { padding: 12px 20px; font-size: 0.9rem; font-weight: 600; color: var(--gray-600); border-bottom: 2px solid transparent; }
.tab-btn.active { color: var(--primary-900); border-color: var(--gold-600); }
.tab-panel { display: none; }
.tab-panel.active { display: block; }

/* ===== ACCORDION ===== */
.accordion-item { border: 1px solid var(--gray-200); border-radius: var(--radius-md); margin-bottom: var(--space-3); overflow: hidden; }
.accordion-header { display: flex; align-items: center; justify-content: space-between; padding: var(--space-5); background: var(--gray-50); font-weight: 700; color: var(--primary-900); }
.accordion-header .num { color: var(--gold-700); margin-right: var(--space-3); font-family: var(--font-heading); }
.accordion-header .chevron { transition: transform var(--transition-fast); }
.accordion-item.open .chevron { transform: rotate(180deg); }
.accordion-body { max-height: 0; overflow: hidden; transition: max-height var(--transition-normal); }
.accordion-item.open .accordion-body { max-height: 600px; }
.accordion-lecture { display: flex; align-items: center; justify-content: space-between; padding: var(--space-3) var(--space-5); border-top: 1px solid var(--gray-100); font-size: 0.88rem; color: var(--gray-600); }

/* ===== MODAL ===== */
.modal-overlay { position: fixed; inset: 0; background: rgba(7,27,58,0.55); display: none; align-items: center; justify-content: center; z-index: var(--z-modal); padding: var(--space-4); }
.modal-overlay.open { display: flex; }
.modal { background: var(--white); border-radius: var(--radius-lg); max-width: 560px; width: 100%; max-height: 88vh; overflow-y: auto; padding: var(--space-8); }
.modal-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: var(--space-6); }
.modal-close { font-size: 1.4rem; color: var(--gray-400); }

/* ===== TOAST ===== */
.toast-stack { position: fixed; top: 24px; right: 24px; z-index: var(--z-toast); display: flex; flex-direction: column; gap: var(--space-3); }
.toast { background: var(--white); border-left: 4px solid var(--success); box-shadow: var(--shadow-card-hover); border-radius: var(--radius-md); padding: var(--space-4) var(--space-5); font-size: 0.88rem; min-width: 260px; animation: toastIn 0.3s ease; }
.toast.error { border-color: var(--error); }
@keyframes toastIn { from { opacity: 0; transform: translateX(20px); } to { opacity: 1; transform: translateX(0); } }

/* ===== TABLE ===== */
.data-table { width: 100%; background: var(--white); border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-card); }
.data-table thead { background: var(--primary-900); }
.data-table th { color: var(--white); text-align: left; font-size: 0.75rem; letter-spacing: 0.05em; text-transform: uppercase; padding: var(--space-4) var(--space-5); }
.data-table td { padding: var(--space-4) var(--space-5); font-size: 0.88rem; border-bottom: 1px solid var(--gray-100); color: var(--gray-800); }
.data-table tbody tr:hover { background: var(--gray-50); }
.data-table tbody tr:last-child td { border-bottom: none; }

/* ===== PROGRESS BAR ===== */
.progress-track { background: var(--gray-100); border-radius: var(--radius-pill); height: 8px; overflow: hidden; }
.progress-fill { height: 100%; background: linear-gradient(90deg, var(--gold-600), var(--gold-500)); border-radius: var(--radius-pill); transition: width 0.6s ease; }

/* ===== PAGINATION ===== */
.pagination { display: flex; gap: var(--space-2); justify-content: center; margin-top: var(--space-10); }
.pagination button { width: 40px; height: 40px; border-radius: var(--radius-md); font-weight: 600; font-size: 0.9rem; color: var(--gray-600); border: 1px solid var(--gray-200); }
.pagination button.active { background: var(--primary-900); color: var(--white); border-color: var(--primary-900); }
.pagination button:hover:not(.active) { border-color: var(--gold-600); color: var(--gold-700); }

/* ===== EMPTY / LOADING STATE ===== */
.empty-state, .loading-state { text-align: center; padding: var(--space-20) var(--space-6); color: var(--gray-600); }
.empty-state svg { margin: 0 auto var(--space-4); }
.spinner { width: 34px; height: 34px; border: 3px solid var(--gray-200); border-top-color: var(--gold-600); border-radius: 50%; margin: 0 auto var(--space-4); animation: spin 0.8s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }