/* =========================================================================
   LMS riêng — Catalog khóa học (template-lms-catalog.php)
   TÍCH HỢP trong khung site (header/footer thương hiệu). Màu emerald/gold.
   ========================================================================= */
.lms-catalog { padding-block: clamp(1.5rem, 1rem + 2vw, 3rem); }

.lms-cat-head {
  display: flex; flex-wrap: wrap; align-items: flex-end; justify-content: space-between;
  gap: 1.25rem; margin-bottom: clamp(1.75rem, 1rem + 1.5vw, 2.5rem);
  padding-bottom: clamp(1.25rem, 1rem + 1vw, 1.75rem); border-bottom: 1px solid var(--border);
}
.lms-cat-head-text { max-width: 660px; }
.lms-cat-head .eyebrow { color: var(--emerald); font-weight: 700; letter-spacing: 0.06em; text-transform: uppercase; font-size: 0.78rem; margin-bottom: 0.4rem; }
.lms-cat-title {
  margin: 0; font-family: var(--font-display); font-weight: 800;
  font-size: clamp(1.7rem, 1.1rem + 2.4vw, 2.6rem); line-height: 1.12; letter-spacing: -0.015em; color: var(--emerald-deep);
}
.lms-cat-sub { margin: 0.7rem 0 0; color: var(--muted-foreground); line-height: 1.65; font-size: 1.02rem; }
.lms-cat-stats { display: flex; flex-wrap: wrap; align-items: center; gap: 0.5rem 1.75rem; margin: 1rem 0 0; }
.lms-cat-stats span { display: inline-flex; align-items: baseline; gap: 0.35rem; font-size: 0.9rem; font-weight: 600; color: var(--muted-foreground); }
.lms-cat-stats strong { font-family: var(--font-display); font-weight: 800; font-size: 1.2rem; color: var(--emerald-deep); }
.lms-search {
  display: inline-flex; align-items: center; gap: 0.55rem; width: min(320px, 100%); flex: 0 0 auto;
  padding: 0.7rem 1.1rem; background: #fff; border: 1px solid var(--border);
  border-radius: 999px; box-shadow: var(--shadow-soft); color: var(--muted-foreground);
  transition: border-color 0.15s ease;
}
.lms-search:focus-within { border-color: var(--emerald); }
.lms-search input { flex: 1 1 auto; border: 0; outline: 0; background: transparent; font-size: 0.95rem; color: var(--ink); }

/* Khóa nổi bật — hero ngang (ảnh trái · nội dung phải) */
.lms-feature { overflow: hidden; padding: 0 !important; display: grid; grid-template-columns: 1fr; box-shadow: var(--shadow-elegant); }
@media (min-width: 768px) { .lms-feature { grid-template-columns: 44% 1fr; align-items: stretch; } }
.lms-feature-media { position: relative; display: block; aspect-ratio: 16 / 10; background: color-mix(in srgb, var(--emerald) 8%, var(--cream)); }
@media (min-width: 768px) { .lms-feature-media { aspect-ratio: auto; height: 100%; min-height: 280px; } }
.lms-feature-media img { width: 100%; height: 100%; object-fit: cover; display: block; }
.lms-feature-media > svg { width: 48px; height: 48px; color: color-mix(in srgb, var(--emerald) 40%, #fff); position: absolute; inset: 0; margin: auto; }
.lms-feature-badge { position: absolute; top: 1rem; left: 1rem; display: inline-flex; align-items: center; gap: 0.3rem; padding: 0.35rem 0.8rem; border-radius: 999px; background: var(--emerald-deep); color: #fff; font-size: 0.78rem; font-weight: 700; box-shadow: 0 6px 16px -6px rgba(0, 0, 0, 0.3); }
.lms-feature-badge svg { width: 0.9rem; height: 0.9rem; color: var(--gold); fill: var(--gold); }
.lms-feature-price {
  position: absolute; top: 1rem; right: 1rem; padding: 0.4rem 0.9rem; border-radius: 999px;
  background: var(--gold); color: var(--emerald-deep); font-family: var(--font-display);
  font-weight: 700; font-size: 0.9rem; box-shadow: 0 6px 16px -6px rgba(0, 0, 0, 0.25);
}
.lms-feature-price.is-free { background: var(--emerald); color: #fff; }
.lms-feature-body { padding: clamp(1.4rem, 1rem + 1.5vw, 2.1rem); display: flex; flex-direction: column; }
.lms-feature-body .chip { margin-bottom: 0.7rem; align-self: flex-start; }
.lms-feature-title { margin: 0 0 0.85rem; font-family: var(--font-display); font-weight: 800; font-size: clamp(1.35rem, 1rem + 1.5vw, 2rem); line-height: 1.18; }
.lms-feature-title a { color: var(--emerald-deep); text-decoration: none; }
.lms-feature-title a:hover { color: var(--gold); }
.lms-feature .lms-course-meta { margin: 0 0 1rem; }
.lms-feature-excerpt { margin: 0 0 1.5rem; line-height: 1.7; color: var(--ink); }
.lms-feature-foot { display: flex; flex-wrap: wrap; align-items: center; gap: 0.85rem 1.25rem; margin-top: auto; }
.lms-feature-cta { display: inline-flex; align-items: center; gap: 0.4rem; }
.lms-feature-inst { font-size: 0.9rem; color: var(--muted-foreground); }
.lms-feature-inst strong { color: var(--emerald-deep); }

.lms-section-h { margin: clamp(1.75rem, 1rem + 2vw, 2.5rem) 0 1.5rem; font-family: var(--font-display); font-weight: 800; font-size: 1.3rem; color: var(--emerald-deep); }

/* Lưới "Khóa học khác" */
.lms-cat-more { margin-top: clamp(1.5rem, 1rem + 1.5vw, 2.25rem); }
.lms-cat-more .lms-section-h { position: relative; padding-left: 0.95rem; }
.lms-cat-more .lms-section-h::before { content: ""; position: absolute; left: 0; top: 0.18em; bottom: 0.18em; width: 4px; border-radius: 12px; background: linear-gradient(var(--emerald), var(--gold)); }
.lms-empty { padding: 3rem 0; text-align: center; color: var(--muted-foreground); }

/* =========================================================================
   LMS riêng — Trang chi tiết khóa học (single-cph_course.php)
   ========================================================================= */
.lms-course { padding-block: clamp(1.25rem, 0.9rem + 1.5vw, 2.5rem); }

/* --- Header + hàng thông tin khóa --- */
.lms-course-head { margin: 0.5rem 0 1.75rem; padding-bottom: 1.35rem; border-bottom: 1px solid var(--border); }
.lms-course-head .chip { margin-bottom: 0.7rem; }
.lms-course-title {
  margin: 0; font-family: var(--font-display); font-weight: 800;
  font-size: clamp(1.65rem, 1.15rem + 2.2vw, 2.6rem); line-height: 1.14;
  letter-spacing: -0.012em; color: var(--emerald-deep);
}
.lms-course-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 0.55rem 0.7rem; margin-top: 1rem; }
.lms-course-meta-item { display: inline-flex; align-items: center; gap: 0.4rem; font-size: 0.9rem; font-weight: 600; color: var(--emerald-deep); background: color-mix(in srgb, var(--emerald) 7%, #fff); border: 1px solid color-mix(in srgb, var(--emerald) 16%, var(--border)); padding: 0.38rem 0.78rem; border-radius: 99px; }
.lms-course-meta-item svg { color: var(--emerald); width: 1rem; height: 1rem; }
.lms-course-meta-item.is-free { color: #fff; background: var(--emerald); border-color: var(--emerald); }
.lms-course-meta-item.is-free svg { color: #fff; }
a.lms-course-meta-item { text-decoration: none; transition: border-color 0.15s ease; }
a.lms-course-meta-item:hover { border-color: var(--gold); }
.lms-course-rating strong { font-weight: 800; color: var(--emerald-deep); }
.lms-course-rating span { color: var(--muted-foreground); font-weight: 600; }

.lms-course-layout { display: grid; grid-template-columns: 1fr; gap: clamp(1.5rem, 1rem + 2vw, 2.5rem); }
@media (min-width: 1024px) { .lms-course-layout { grid-template-columns: minmax(0, 1fr) 360px; align-items: start; } }

/* --- Ảnh hero 16:9 --- */
.lms-course-thumb {
  border-radius: var(--radius-lg, 1.25rem); overflow: hidden; border: 1px solid var(--border);
  box-shadow: var(--shadow-elegant); margin-bottom: 1.75rem; aspect-ratio: 16 / 9; background: var(--cream);
}
.lms-course-thumb img { width: 100%; height: 100%; object-fit: cover; display: block; }

/* --- Tabs dạng segmented pill --- */
.lms-course-tabs { margin-bottom: 1.75rem; display: inline-flex; flex-wrap: wrap; gap: 0.25rem; padding: 0.3rem; background: var(--cream); border: 1px solid var(--border); border-radius: 99px; font-weight: 600; max-width: 100%; }
.lms-course-tabs a { text-decoration: none; color: var(--muted-foreground); padding: 0.5rem 1.05rem; border-radius: 99px; white-space: nowrap; transition: background 0.15s ease, color 0.15s ease; }
.lms-course-tabs a:hover { color: var(--emerald-deep); }
.lms-course-tabs a.is-active { color: var(--emerald-deep); background: #fff; box-shadow: var(--shadow-soft); }

.lms-course-section { margin-bottom: 2.4rem; }
.lms-course-desc { line-height: 1.78; color: var(--text, #374151); font-size: 1.02rem; }

/* --- Tiêu đề mục có vạch nhấn + tổng giáo trình --- */
.lms-section-head { display: flex; align-items: flex-end; justify-content: space-between; flex-wrap: wrap; gap: 0.5rem; }
.lms-course .lms-section-h { position: relative; padding-left: 0.95rem; }
.lms-course .lms-section-h::before { content: ""; position: absolute; left: 0; top: 0.18em; bottom: 0.18em; width: 4px; border-radius: 12px; background: linear-gradient(var(--emerald), var(--gold)); }
.lms-cur-summary { display: inline-flex; align-items: center; gap: 0.4rem; font-size: 0.88rem; font-weight: 700; color: var(--muted-foreground); padding-bottom: 0.4rem; }
.lms-cur-summary svg { color: var(--emerald); }

/* --- Giáo trình --- */
.lms-curriculum { list-style: none; margin: 0; padding: 0; display: grid; gap: 0.55rem; }
.lms-cur-item a {
  display: flex; align-items: center; gap: 0.9rem; padding: 0.9rem 1.05rem;
  border: 1px solid var(--border); border-radius: var(--radius-md, 1rem); background: #fff;
  text-decoration: none; color: inherit;
  transition: border-color 0.18s ease, box-shadow 0.18s ease, transform 0.18s ease;
}
.lms-cur-item a:hover { border-color: color-mix(in srgb, var(--emerald) 40%, var(--border)); box-shadow: var(--shadow-soft); transform: translateY(-1px); }
.lms-cur-num {
  flex: 0 0 auto; width: 2.15rem; height: 2.15rem; display: inline-flex; align-items: center; justify-content: center;
  border-radius: 12px; background: color-mix(in srgb, var(--emerald) 12%, var(--cream)); color: var(--emerald-deep);
  font-family: var(--font-display); font-weight: 700; font-size: 0.92rem;
}
.lms-cur-main { flex: 1 1 auto; display: flex; flex-direction: column; gap: 0.15rem; min-width: 0; }
.lms-cur-title { font-weight: 600; color: var(--emerald-deep); line-height: 1.35; }
.lms-cur-dur { font-size: 0.78rem; color: var(--muted-foreground); }
.lms-cur-icon { flex: 0 0 auto; width: 2rem; height: 2rem; display: inline-flex; align-items: center; justify-content: center; border-radius: 50%; background: var(--cream); color: var(--muted-foreground); }
.lms-cur-item.is-preview .lms-cur-icon { color: var(--emerald); background: color-mix(in srgb, var(--emerald) 10%, #fff); }

/* --- Sidebar đăng ký: thẻ premium --- */
.lms-course-side { display: block; }
@media (min-width: 1024px) { .lms-course-side { position: sticky; top: var(--header-h, 5rem); } }
.lms-enroll { padding: 1.6rem !important; position: relative; overflow: hidden; box-shadow: var(--shadow-elegant); }
/* (Đã gỡ dải gradient ở đỉnh thẻ ghi danh theo yêu cầu — gọn, chuyên nghiệp hơn.) */
.lms-enroll-price { font-family: var(--font-display); font-weight: 800; font-size: 1.95rem; color: var(--emerald-deep); margin-bottom: 1.1rem; line-height: 1; }
.lms-enroll-price.is-free { color: var(--emerald); }
.lms-enroll-price del { display: block; font-size: 1rem; font-weight: 500; color: var(--muted-foreground); margin-bottom: 0.2rem; }
.lms-enroll-form { margin-bottom: 0.5rem; }
.lms-enroll-btn { width: 100%; justify-content: center; padding-block: 0.95rem; font-size: 1.02rem; }
.cph-course-includes { margin-top: 1.25rem; padding-top: 1.25rem; border-top: 1px solid var(--border); }

/* --- Thanh đăng ký dính (chỉ mobile) --- */
.lms-course-sticky { display: none; }
@media (max-width: 1023px) {
  .single-cph_course .mobile-cta-bar { display: none !important; }
  .lms-course-sticky {
    display: flex; align-items: center; gap: 1rem; position: fixed; left: 0; right: 0; bottom: 0; z-index: 60;
    padding: 0.7rem clamp(1rem, 0.5rem + 2vw, 1.5rem);
    padding-bottom: calc(0.7rem + env(safe-area-inset-bottom, 0px));
    background: #fff; border-top: 1px solid var(--border); box-shadow: 0 -8px 24px -18px rgba(0,0,0,0.3);
  }
  .lms-course-sticky-info { display: flex; flex-direction: column; line-height: 1.2; min-width: 0; }
  .lms-course-sticky-label { font-size: 0.72rem; color: var(--muted-foreground); }
  .lms-course-sticky-info strong { font-family: var(--font-display); font-weight: 800; font-size: 1.2rem; color: var(--emerald-deep); }
  .lms-course-sticky-info strong.is-free { color: var(--emerald); }
  .lms-course-sticky > .btn-gold, .lms-course-sticky-form { margin-left: auto; }
  .lms-course-sticky-btn { white-space: nowrap; padding: 0.72rem 1.6rem; }
  .single-cph_course .site-footer { padding-bottom: 5rem; }
}

/* =========================================================================
   LMS riêng — Trình học bài (single-cph_lesson.php)
   ========================================================================= */
.lms-lesson { max-width: 100%; }
.lms-lesson-bar {
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
  padding: 0.85rem clamp(1rem, 0.5rem + 2vw, 2rem); background: var(--emerald-deep); color: #fff;
}
.lms-lesson-back { display: inline-flex; align-items: center; gap: 0.5rem; color: #fff; text-decoration: none; font-weight: 600; min-width: 0; }
.lms-lesson-back span { max-width: 56vw; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.lms-lesson-back:hover { color: var(--gold); }
.lms-lesson-progress { font-size: 0.85rem; opacity: 0.9; white-space: nowrap; }

.lms-lesson-layout { display: grid; grid-template-columns: 1fr; align-items: start; }
@media (min-width: 1024px) { .lms-lesson-layout { grid-template-columns: 330px 1fr; } }

/* Sidebar giáo trình — mobile = accordion thu gọn, desktop = dính */
.lms-lesson-nav { background: #fff; border-bottom: 1px solid var(--border); }
.lms-lesson-nav-toggle {
  display: flex; align-items: center; justify-content: space-between; gap: 0.75rem; width: 100%;
  padding: 1rem clamp(1rem, 0.5rem + 2vw, 1.25rem); background: var(--cream); border: 0;
  cursor: pointer; text-align: left; font: inherit; color: inherit;
}
.lms-lesson-nav-htext { display: flex; flex-direction: column; gap: 0.12rem; min-width: 0; }
.lms-lesson-nav-h { font-family: var(--font-display); font-weight: 800; color: var(--emerald-deep); font-size: 1.02rem; }
.lms-lesson-nav-count { font-size: 0.8rem; color: var(--muted-foreground); font-weight: 600; }
.lms-lesson-nav-chev { flex: 0 0 auto; color: var(--emerald-deep); transition: transform 0.2s ease; }
.lms-lesson-nav.is-open .lms-lesson-nav-chev { transform: rotate(180deg); }
.lms-lesson-nav-prog { height: 4px; background: color-mix(in srgb, var(--emerald) 14%, #fff); }
.lms-lesson-nav-prog span { display: block; height: 100%; background: linear-gradient(90deg, var(--emerald), var(--gold)); transition: width 0.4s ease; }
.lms-lesson-nav-list { list-style: none; margin: 0; padding: 0.75rem; display: none; gap: 0.3rem; max-height: 60vh; overflow-y: auto; }
.lms-lesson-nav.is-open .lms-lesson-nav-list { display: grid; }
.lms-lesson-nav a { display: flex; align-items: center; gap: 0.7rem; padding: 0.6rem; border-radius: 12px; text-decoration: none; color: var(--ink); transition: background 0.15s ease; }
.lms-lesson-nav a:hover { background: var(--cream); }
.lms-lesson-nav li.is-active a { background: color-mix(in srgb, var(--emerald) 10%, var(--cream)); box-shadow: inset 3px 0 0 var(--emerald); }
.lms-lesson-nav-num {
  flex: 0 0 auto; width: 1.85rem; height: 1.85rem; display: inline-flex; align-items: center; justify-content: center;
  border-radius: 12px; background: color-mix(in srgb, var(--emerald) 12%, #fff); color: var(--emerald-deep); font-weight: 700; font-size: 0.8rem;
}
.lms-lesson-nav li.is-active .lms-lesson-nav-num { background: var(--emerald-deep); color: #fff; }
.lms-lesson-nav li.is-done .lms-lesson-nav-num { background: var(--emerald); color: #fff; }
.lms-lesson-nav-num svg { width: 1rem; height: 1rem; }
.lms-lesson-nav-main { display: flex; flex-direction: column; gap: 0.12rem; min-width: 0; }
.lms-lesson-nav-title { font-size: 0.9rem; font-weight: 600; line-height: 1.35; color: var(--ink); }
.lms-lesson-nav li.is-active .lms-lesson-nav-title { color: var(--emerald-deep); }
.lms-lesson-nav-sub { display: flex; align-items: center; gap: 0.6rem; font-size: 0.74rem; color: var(--muted-foreground); }
.lms-lesson-nav-dur { display: inline-flex; align-items: center; gap: 0.25rem; }
.lms-lesson-nav-dur svg { width: 0.8rem; height: 0.8rem; }
.lms-lesson-nav-free { font-weight: 700; color: var(--emerald); }
@media (min-width: 1024px) {
  .lms-lesson-nav { position: sticky; top: var(--header-h, 5rem); max-height: calc(100vh - var(--header-h, 5rem)); overflow-y: auto; border-right: 1px solid var(--border); border-bottom: 0; padding: 1.25rem 0.85rem; }
  .lms-lesson-nav-toggle { background: transparent; padding: 0 0.6rem 0.85rem; pointer-events: none; cursor: default; }
  .lms-lesson-nav-chev { display: none; }
  .lms-lesson-nav-prog { display: none; }
  .lms-lesson-nav-list { display: grid !important; padding: 0.6rem 0 0; max-height: none; overflow: visible; }
}

.lms-lesson-main { background: #fff; min-width: 0; }
.lms-lesson-body { max-width: 840px; margin-inline: auto; padding: clamp(1.75rem, 1rem + 2.5vw, 3rem) clamp(1rem, 0.5rem + 2vw, 2rem) 3rem; }
.lms-lesson-eyebrow { display: inline-block; margin-bottom: 0.5rem; font-weight: 700; font-size: 0.8rem; letter-spacing: 0.04em; text-transform: uppercase; color: var(--emerald); }
.lms-lesson-title { margin: 0 0 1.4rem; font-family: var(--font-display); font-weight: 800; font-size: clamp(1.5rem, 1rem + 1.8vw, 2.1rem); line-height: 1.18; color: var(--emerald-deep); }
.lms-lesson-video { aspect-ratio: 16/9; margin-bottom: 1.75rem; border-radius: 12px; overflow: hidden; background: #000; box-shadow: var(--shadow-elegant); }
.lms-lesson-video iframe, .lms-lesson-video video { width: 100%; height: 100%; border: 0; display: block; object-fit: contain; background: #000; }
.lms-lesson-content { font-size: 1.0625rem; line-height: 1.8; color: #243a2d; }
.lms-lesson-content > :first-child { margin-top: 0; }
.lms-lesson-content h2, .lms-lesson-content h3, .lms-lesson-content h4 { font-family: var(--font-display); color: var(--emerald-deep); margin: 1.75rem 0 0.7rem; line-height: 1.3; }
.lms-lesson-content h2 { font-size: 1.4rem; }
.lms-lesson-content h3 { font-size: 1.15rem; }
.lms-lesson-content p { margin: 0 0 1.1rem; }
.lms-lesson-content ul, .lms-lesson-content ol { margin: 0 0 1.1rem; padding-left: 1.35rem; }
.lms-lesson-content li { margin-bottom: 0.4rem; }
.lms-lesson-content a { color: var(--emerald); text-decoration: underline; text-underline-offset: 2px; }
.lms-lesson-content a:hover { color: var(--emerald-deep); }
.lms-lesson-content strong { color: var(--emerald-deep); }
.lms-lesson-content img { border-radius: 12px; max-width: 100%; height: auto; }
.lms-lesson-content blockquote { margin: 1.25rem 0; padding: 0.85rem 1.25rem; border-left: 3px solid var(--emerald); background: var(--cream); border-radius: 0 12px 12px 0; color: var(--ink); }
.lms-lesson-foot { display: flex; align-items: center; justify-content: space-between; gap: 1rem; flex-wrap: wrap; margin-top: 2.5rem; padding-top: 1.5rem; border-top: 1px solid var(--border); }
.lms-lesson-prev { display: inline-flex; align-items: center; gap: 0.4rem; color: var(--muted-foreground); text-decoration: none; font-weight: 600; }
.lms-lesson-prev:hover { color: var(--emerald-deep); }
.lms-lesson-next { display: inline-flex; align-items: center; gap: 0.4rem; }
@media (max-width: 1023px) {
  .single-cph_lesson .mobile-cta-bar { display: none !important; }
  .single-cph_lesson .floating-contact { bottom: 1rem; }
}

/* =========================================================================
   LMS riêng — TIẾN ĐỘ + GHI DANH + KHÓA NỘI DUNG (B4) + DASHBOARD (B5)
   ========================================================================= */

/* --- Thanh tiến độ dùng chung (sidebar khóa + dashboard) --- */
.lms-progress { height: 8px; border-radius: 99px; background: color-mix(in srgb, var(--emerald) 14%, #fff); overflow: hidden; }
.lms-progress-bar { height: 100%; border-radius: 99px; background: linear-gradient(90deg, var(--emerald), var(--emerald)); transition: width 0.4s ease; }
.lms-progress-text { margin: 0.5rem 0 0; font-size: 0.85rem; font-weight: 600; color: var(--muted-foreground); }

/* --- Sidebar khóa: trạng thái đã ghi danh --- */
.lms-enroll-state { display: flex; align-items: center; justify-content: space-between; gap: 0.5rem; margin-bottom: 0.85rem; }
.lms-enroll-badge { display: inline-flex; align-items: center; gap: 0.35rem; font-weight: 700; color: var(--emerald-deep); background: color-mix(in srgb, var(--emerald) 14%, #fff); padding: 0.3rem 0.7rem; border-radius: 99px; font-size: 0.85rem; }
.lms-enroll-badge svg { color: var(--emerald); }
.lms-enroll-done { font-weight: 700; font-size: 0.85rem; }
.lms-enroll .lms-progress { margin-top: 0.25rem; }
.lms-enroll .lms-enroll-btn { margin-top: 1rem; }
.lms-enroll-mine { display: block; text-align: center; margin-top: 0.7rem; font-weight: 600; font-size: 0.9rem; color: var(--emerald-deep); text-decoration: none; }
.lms-enroll-mine:hover { color: var(--gold); text-decoration: underline; }
.lms-enroll-note { margin: 0.6rem 0 0; font-size: 0.82rem; color: var(--muted-foreground); text-align: center; }

/* --- Giáo trình (trang chi tiết): trạng thái bài --- */
.lms-cur-main { gap: 0.2rem; }
.lms-cur-tags { display: flex; align-items: center; gap: 0.5rem; flex-wrap: wrap; }
.lms-cur-tag.is-free { font-size: 0.72rem; font-weight: 700; color: var(--emerald); background: color-mix(in srgb, var(--emerald) 12%, #fff); padding: 0.05rem 0.45rem; border-radius: 99px; }
.lms-cur-item.is-done .lms-cur-num { background: var(--emerald); color: #fff; }
.lms-cur-item.is-done .lms-cur-icon { color: var(--emerald); }
.lms-cur-item.is-locked { opacity: 0.72; }
.lms-cur-item.is-locked .lms-cur-icon { color: var(--muted-foreground); }
.lms-cur-item.is-locked a:hover { transform: none; }

/* --- Lesson sidebar: tick hoàn thành + khóa --- */
.lms-lesson-nav li.is-locked { opacity: 0.65; }
.lms-lesson-nav li.is-locked .lms-lesson-nav-num { background: color-mix(in srgb, var(--ink) 8%, #fff); color: var(--muted-foreground); }

/* --- Lesson topbar: thanh tiến độ mini --- */
.lms-lesson-progress-wrap { display: inline-flex; align-items: center; gap: 0.6rem; }
.lms-lesson-progress-bar { width: clamp(80px, 18vw, 160px); height: 6px; border-radius: 99px; background: rgba(255,255,255,0.25); overflow: hidden; }
.lms-lesson-progress-bar span { display: block; height: 100%; background: var(--gold); border-radius: 99px; transition: width 0.4s ease; }

/* --- Lesson: nút hoàn thành --- */
.lms-complete-form { display: inline-flex; align-items: center; gap: 0.75rem; flex-wrap: wrap; justify-content: flex-end; }
.lms-done-flag { display: inline-flex; align-items: center; gap: 0.4rem; font-weight: 700; color: var(--emerald); }
.lms-done-flag svg { color: var(--emerald); }

/* --- Lesson: panel KHÓA (chưa ghi danh) --- */
.lms-lesson-locked { text-align: center; max-width: 460px; margin: 1rem auto; padding: 2.5rem 1.5rem; border: 1px dashed color-mix(in srgb, var(--emerald) 30%, var(--border)); border-radius: 12px; background: var(--cream); }
.lms-lesson-locked-ico { display: inline-flex; align-items: center; justify-content: center; width: 64px; height: 64px; border-radius: 50%; background: color-mix(in srgb, var(--emerald) 12%, #fff); color: var(--emerald-deep); margin-bottom: 1rem; }
.lms-lesson-locked-ico svg { width: 30px; height: 30px; }
.lms-lesson-locked h2 { margin: 0 0 0.5rem; font-family: var(--font-display); color: var(--emerald-deep); font-size: 1.3rem; }
.lms-lesson-locked p { margin: 0 0 1.25rem; color: var(--muted-foreground); }
.lms-lesson-locked .btn-gold { display: inline-flex; align-items: center; gap: 0.4rem; }
.lms-lesson-locked-alt { display: block; margin-top: 0.8rem; font-weight: 600; color: var(--emerald-deep); text-decoration: none; }
.lms-lesson-locked-alt:hover { color: var(--gold); text-decoration: underline; }

/* =========================================================================
   Dashboard "Khóa học của tôi" (template-lms-dashboard.php)
   ========================================================================= */
.lms-dash-head { margin-bottom: 1.5rem; }
.lms-dash-head h1 { margin: 0 0 0.5rem; font-family: var(--font-display); font-weight: 800; color: var(--emerald-deep); font-size: clamp(1.6rem, 1.1rem + 2vw, 2.3rem); }
.lms-dash-hi { margin: 0; color: var(--muted-foreground); }

.lms-dash-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; margin-bottom: 2rem; }
.lms-dash-stat { background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 1.25rem 1rem; text-align: center; }
.lms-dash-stat-num { display: block; font-family: var(--font-display); font-weight: 800; font-size: 1.9rem; color: var(--emerald-deep); line-height: 1; }
.lms-dash-stat-lbl { display: block; margin-top: 0.5rem; font-size: 0.82rem; color: var(--muted-foreground); }

.lms-dash-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 1.25rem; }
.lms-dash-card { padding: 0 !important; overflow: hidden; display: flex; flex-direction: column; }
.lms-dash-card-media { position: relative; display: block; aspect-ratio: 16/10; background: var(--cream); overflow: hidden; }
.lms-dash-card-media img { width: 100%; height: 100%; object-fit: cover; }
.lms-dash-card-media > svg { width: 40px; height: 40px; color: color-mix(in srgb, var(--emerald) 40%, #fff); position: absolute; inset: 0; margin: auto; }
.lms-dash-card-flag { position: absolute; top: 0.75rem; left: 0.75rem; display: inline-flex; align-items: center; gap: 0.3rem; background: var(--emerald-deep); color: #fff; font-size: 0.75rem; font-weight: 700; padding: 0.25rem 0.6rem; border-radius: 99px; }
.lms-dash-card-flag svg { width: 0.9rem; height: 0.9rem; color: var(--gold); }
.lms-dash-card-body { padding: 1.25rem; display: flex; flex-direction: column; gap: 0.75rem; flex: 1 1 auto; }
.lms-dash-card-body h3 { margin: 0; font-size: 1.05rem; line-height: 1.35; }
.lms-dash-card-body h3 a { color: var(--emerald-deep); text-decoration: none; }
.lms-dash-card-body h3 a:hover { color: var(--gold); }
.lms-dash-card-btn { margin-top: auto; justify-content: center; }
.lms-dash-card.is-complete .lms-progress-bar { background: linear-gradient(90deg, var(--gold), #D9B04E); }

.lms-dash-empty { text-align: center; padding: 3rem 1.5rem; }
.lms-dash-empty-ico { display: inline-flex; align-items: center; justify-content: center; width: 72px; height: 72px; border-radius: 50%; background: color-mix(in srgb, var(--emerald) 12%, #fff); color: var(--emerald-deep); margin-bottom: 1rem; }
.lms-dash-empty-ico svg { width: 34px; height: 34px; }
.lms-dash-empty h2 { margin: 0 0 0.5rem; font-family: var(--font-display); color: var(--emerald-deep); }
.lms-dash-empty p { margin: 0 0 1.25rem; color: var(--muted-foreground); }
.lms-dash-empty .btn-gold { display: inline-flex; align-items: center; gap: 0.4rem; }

@media (max-width: 560px) {
  .lms-dash-stats { grid-template-columns: 1fr 1fr; }
  .lms-dash-stat:first-child { grid-column: 1 / -1; }
  .lms-complete-form { width: 100%; justify-content: space-between; }
}

/* --- Tài liệu tải về (C1) --- */
.lms-materials { margin: 2rem 0 0; padding: 1.25rem 1.35rem; background: var(--cream); border: 1px solid var(--border); border-radius: 12px; }
.lms-materials-h { display: flex; align-items: center; gap: 0.5rem; margin: 0 0 0.85rem; font-family: var(--font-display); font-weight: 800; font-size: 1.05rem; color: var(--emerald-deep); }
.lms-materials-h svg { color: var(--emerald); }
.lms-materials-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 0.5rem; }
.lms-materials-list a { display: flex; align-items: center; gap: 0.75rem; padding: 0.7rem 0.85rem; background: #fff; border: 1px solid var(--border); border-radius: 12px; text-decoration: none; color: var(--emerald-deep); transition: border-color 0.15s ease, transform 0.15s ease; }
.lms-materials-list a:hover { border-color: var(--emerald); transform: translateX(2px); }
.lms-mat-ext { flex: 0 0 auto; min-width: 2.8rem; height: 1.7rem; display: inline-flex; align-items: center; justify-content: center; padding: 0 0.4rem; font-size: 0.68rem; font-weight: 800; letter-spacing: 0.02em; color: #fff; background: var(--emerald); border-radius: 12px; }
.lms-mat-name { flex: 1 1 auto; font-weight: 600; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.lms-mat-size { flex: 0 0 auto; font-size: 0.8rem; color: var(--muted-foreground); }
.lms-mat-dl { flex: 0 0 auto; color: var(--emerald); }

/* =========================================================================
   Đánh giá khóa học (C2)
   ========================================================================= */
/* Dải sao hiển thị (hỗ trợ điểm lẻ bằng lớp phủ %) */
.cph-stars { position: relative; display: inline-flex; line-height: 0; white-space: nowrap; }
.cph-stars-bg { display: inline-flex; }
.cph-stars-bg svg { color: #d8d8d8; fill: #d8d8d8; }
.cph-stars-fg { position: absolute; inset: 0; display: inline-flex; width: var(--pct, 0%); overflow: hidden; }
.cph-stars-fg svg { color: var(--gold); fill: var(--gold); }

/* Sao dưới tiêu đề khóa */
.lms-course-rating { font-size: 0.95rem; }

/* Thẻ khóa: sao nhỏ */
.course-card-rate { color: var(--emerald-deep) !important; font-weight: 700; }
.course-card-rate svg { color: var(--gold); }
.course-card-rate span { color: var(--muted-foreground); font-weight: 500; }

/* Tổng hợp điểm */
.lms-review-summary { display: grid; grid-template-columns: auto 1fr; gap: 1.5rem; align-items: center; padding: 1.25rem; background: var(--cream); border: 1px solid var(--border); border-radius: 12px; margin-bottom: 1.5rem; }
.lms-review-score { text-align: center; }
.lms-review-avg { display: block; font-family: var(--font-display); font-weight: 800; font-size: 2.6rem; color: var(--emerald-deep); line-height: 1; }
.lms-review-count { display: block; margin-top: 0.35rem; font-size: 0.82rem; color: var(--muted-foreground); }
.lms-review-dist { display: grid; gap: 0.3rem; }
.lms-review-distrow { display: grid; grid-template-columns: 2.4rem 1fr 2rem; align-items: center; gap: 0.6rem; font-size: 0.82rem; color: var(--muted-foreground); }
.lms-review-distbar { height: 7px; border-radius: 99px; background: color-mix(in srgb, var(--emerald) 12%, #fff); overflow: hidden; }
.lms-review-distbar span { display: block; height: 100%; background: var(--gold); border-radius: 99px; }
.lms-review-distn { text-align: right; }

/* Danh sách review */
.lms-review-list { list-style: none; margin: 0 0 1.5rem; padding: 0; display: grid; gap: 1rem; }
.lms-review-item { padding: 1rem 1.1rem; border: 1px solid var(--border); border-radius: 12px; background: #fff; }
.lms-review-head { display: flex; align-items: center; gap: 0.7rem; flex-wrap: wrap; margin-bottom: 0.4rem; }
.lms-review-author { font-weight: 700; color: var(--emerald-deep); }
.lms-review-date { font-size: 0.8rem; color: var(--muted-foreground); margin-left: auto; }
.lms-review-body { margin: 0; color: #243a2d; line-height: 1.6; }
.lms-review-empty, .lms-review-note { color: var(--muted-foreground); }
.lms-review-note { display: inline-flex; align-items: center; gap: 0.4rem; padding: 0.75rem 1rem; background: var(--cream); border-radius: 12px; }
.lms-review-note svg { color: var(--emerald); }
.lms-review-flash { display: inline-flex; align-items: center; gap: 0.4rem; padding: 0.7rem 1rem; border-radius: 12px; font-weight: 600; margin-bottom: 1rem; }
.lms-review-flash.is-ok { color: var(--emerald-deep); background: color-mix(in srgb, var(--emerald) 12%, #fff); }
.lms-review-flash.is-ok svg { color: var(--emerald); }
.lms-review-flash.is-err { color: #b32d2e; background: #fdecec; }

/* Form đánh giá */
.lms-review-form { margin-top: 1.5rem; padding: 1.25rem; border: 1px solid var(--border); border-radius: 12px; }
.lms-review-form-h { margin: 0 0 0.5rem; font-weight: 700; color: var(--emerald-deep); }
.lms-review-form textarea { width: 100%; margin: 0.5rem 0 0.85rem; padding: 0.75rem 0.85rem; border: 1px solid var(--border); border-radius: 12px; font: inherit; resize: vertical; }
.lms-review-form textarea:focus { outline: none; border-color: var(--emerald); box-shadow: 0 0 0 3px color-mix(in srgb, var(--emerald) 22%, transparent); }

/* Input chọn sao (radio, kỹ thuật row-reverse) */
.cph-rate-input { display: inline-flex; flex-direction: row-reverse; gap: 0.15rem; }
.cph-rate-input input { position: absolute; opacity: 0; width: 0; height: 0; }
.cph-rate-input label { cursor: pointer; color: #d8d8d8; line-height: 0; }
.cph-rate-input label svg { width: 28px; height: 28px; fill: currentColor; }
.cph-rate-input label:hover,
.cph-rate-input label:hover ~ label,
.cph-rate-input input:checked ~ label { color: var(--gold); }
.cph-rate-input input:focus-visible ~ label { outline: 2px solid var(--emerald); outline-offset: 2px; }

@media (max-width: 560px) {
  .lms-review-summary { grid-template-columns: 1fr; gap: 1rem; }
}

/* =========================================================================
   Chứng nhận hoàn thành (C3)
   ========================================================================= */
.lms-cert-actions { display: flex; align-items: center; justify-content: space-between; gap: 1rem; flex-wrap: wrap; margin-bottom: 1.25rem; }
.lms-cert-valid { display: inline-flex; align-items: center; gap: 0.4rem; font-weight: 700; color: var(--emerald-deep); background: color-mix(in srgb, var(--emerald) 12%, #fff); padding: 0.45rem 0.9rem; border-radius: 99px; }
.lms-cert-valid svg { color: var(--emerald); }
.lms-cert-actions .btn-gold { display: inline-flex; align-items: center; gap: 0.4rem; }

/* Tấm chứng nhận */
.lms-cert { max-width: 880px; margin: 0 auto; aspect-ratio: 1.414 / 1; background:
  radial-gradient(circle at 0 0, color-mix(in srgb, var(--emerald) 8%, #fff), #fff 38%),
  radial-gradient(circle at 100% 100%, color-mix(in srgb, var(--gold) 16%, #fff), #fff 38%), #fff;
  border: 2px solid var(--emerald-deep); border-radius: 12px; box-shadow: var(--shadow-soft); padding: clamp(0.6rem, 2vw, 1rem); }
.lms-cert-inner { height: 100%; border: 1px solid var(--gold); border-radius: 12px; padding: clamp(1.25rem, 4vw, 3rem); display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; }
.lms-cert-top { margin-bottom: clamp(0.5rem, 2vw, 1.25rem); }
.lms-cert-brand { display: block; font-family: var(--font-display); font-weight: 800; font-size: clamp(1.1rem, 1rem + 1vw, 1.6rem); color: var(--emerald-deep); letter-spacing: 0.04em; }
.lms-cert-kicker { display: block; margin-top: 0.35rem; font-size: clamp(0.7rem, 0.6rem + 0.4vw, 0.85rem); font-weight: 700; letter-spacing: 0.22em; color: var(--gold); }
.lms-cert-intro { margin: 0.4rem 0; color: var(--muted-foreground); font-size: clamp(0.85rem, 0.8rem + 0.3vw, 1rem); }
.lms-cert-name { margin: 0.25rem 0; font-family: var(--font-display); font-weight: 800; font-size: clamp(1.6rem, 1rem + 3.5vw, 2.8rem); color: var(--emerald-deep); }
.lms-cert-course { margin: 0.25rem 0 0; font-weight: 700; font-size: clamp(1.05rem, 0.9rem + 1vw, 1.5rem); color: #243a2d; max-width: 90%; }
.lms-cert-meta { display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: clamp(1rem, 4vw, 3rem); width: 100%; margin-top: clamp(1.25rem, 4vw, 2.5rem); }
.lms-cert-meta-item { display: flex; flex-direction: column; gap: 0.2rem; }
.lms-cert-meta-lbl { font-size: 0.72rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--muted-foreground); }
.lms-cert-meta-val { font-weight: 700; color: var(--emerald-deep); border-top: 1px solid var(--border); padding-top: 0.3rem; }
.lms-cert-seal { width: clamp(54px, 12vw, 84px); height: clamp(54px, 12vw, 84px); border-radius: 50%; display: inline-flex; align-items: center; justify-content: center; color: var(--gold); background: color-mix(in srgb, var(--gold) 14%, #fff); border: 2px solid var(--gold); }
.lms-cert-seal svg { width: 55%; height: 55%; }
.lms-cert-foot { display: flex; align-items: center; justify-content: space-between; gap: 1rem; flex-wrap: wrap; width: 100%; margin-top: clamp(1rem, 3vw, 2rem); padding-top: 0.85rem; border-top: 1px dashed var(--border); font-size: 0.78rem; color: var(--muted-foreground); }
.lms-cert-foot strong { color: var(--emerald-deep); letter-spacing: 0.05em; }
.lms-cert-verify-url { font-size: 0.72rem; }

/* Không hợp lệ / khách */
.lms-cert-invalid { max-width: 520px; margin: 1rem auto; text-align: center; padding: 2.5rem 1.5rem; }
.lms-cert-invalid-ico { display: inline-flex; align-items: center; justify-content: center; width: 72px; height: 72px; border-radius: 50%; background: var(--cream); color: var(--emerald-deep); margin-bottom: 1rem; }
.lms-cert-invalid-ico svg { width: 34px; height: 34px; }
.lms-cert-invalid h1 { margin: 0 0 0.5rem; font-family: var(--font-display); font-size: 1.4rem; color: var(--emerald-deep); }
.lms-cert-invalid p { margin: 0 0 1.25rem; color: var(--muted-foreground); }
.lms-cert-invalid .btn-gold { display: inline-flex; align-items: center; gap: 0.4rem; }

/* Chứng nhận của tôi */
.lms-cert-mine { list-style: none; margin: 0; padding: 0; display: grid; gap: 1rem; }
.lms-cert-mine li { display: flex; align-items: center; gap: 1rem; padding: 1.1rem 1.25rem; }
.lms-cert-mine-ico { flex: 0 0 auto; width: 52px; height: 52px; border-radius: 50%; display: inline-flex; align-items: center; justify-content: center; color: var(--gold); background: color-mix(in srgb, var(--gold) 14%, #fff); }
.lms-cert-mine-body { flex: 1 1 auto; min-width: 0; }
.lms-cert-mine-body h3 { margin: 0 0 0.2rem; font-size: 1.05rem; color: var(--emerald-deep); }
.lms-cert-mine-date { font-size: 0.82rem; color: var(--muted-foreground); }
.lms-cert-mine .btn-gold { flex: 0 0 auto; display: inline-flex; align-items: center; gap: 0.4rem; }

/* Liên kết chứng nhận ở dashboard / sidebar */
.lms-dash-certlink, .lms-enroll-cert, .lms-dash-cert { display: inline-flex; align-items: center; gap: 0.4rem; font-weight: 700; text-decoration: none; }
.lms-dash-certlink { margin-top: 0.75rem; color: var(--emerald-deep); }
.lms-dash-certlink:hover { color: var(--gold); }
.lms-dash-certlink svg { color: var(--gold); }
/* Nút "Xem chứng nhận" — nút phụ tông vàng (premium), full-width khớp nút chính.
   Dùng chung cho sidebar trang khóa (.lms-enroll-cert) lẫn dashboard (.lms-dash-cert). */
.lms-dash-cert,
.lms-enroll-cert {
  display: flex; box-sizing: border-box;
  align-items: center; justify-content: center; gap: 0.45rem;
  width: 100%;
  margin-top: 0.6rem; padding: 0.62rem 1rem;
  font-size: 0.85rem; font-weight: 800; text-decoration: none;
  color: var(--emerald-deep);
  background: color-mix(in srgb, var(--gold) 12%, #fff);
  border: 1px solid color-mix(in srgb, var(--gold) 55%, var(--border));
  border-radius: 12px;
  transition: background 0.2s var(--ease-out, ease), border-color 0.2s, transform 0.2s, box-shadow 0.2s, color 0.2s;
}
.lms-dash-cert svg,
.lms-enroll-cert svg { color: var(--gold); transition: transform 0.2s var(--ease-out, ease); }
.lms-dash-cert:hover, .lms-dash-cert:focus-visible,
.lms-enroll-cert:hover, .lms-enroll-cert:focus-visible {
  background: color-mix(in srgb, var(--gold) 24%, #fff);
  border-color: var(--gold);
  color: var(--emerald-deep);
  transform: translateY(-1px);
  box-shadow: 0 9px 20px -13px color-mix(in srgb, var(--gold) 65%, transparent);
}
.lms-dash-cert:hover svg,
.lms-enroll-cert:hover svg { transform: scale(1.08); }

@media (max-width: 560px) {
  .lms-cert { aspect-ratio: auto; }
  .lms-cert-meta { grid-template-columns: 1fr; gap: 1rem; }
  .lms-cert-mine li { flex-wrap: wrap; }
}

/* IN ẤN — chỉ còn tấm chứng nhận */
@media print {
  .site-header, .site-footer, .mobile-cta-bar, .floating-contact, .kh-sticky, .lms-cert-actions { display: none !important; }
  body { background: #fff !important; }
  .lms-cert-wrap { padding: 0 !important; max-width: none !important; }
  .lms-cert { max-width: 100%; box-shadow: none; aspect-ratio: 1.414 / 1; }
  @page { size: A4 landscape; margin: 10mm; }
}

/* =========================================================================
   Quiz / Bài tập làm bài (C4)
   ========================================================================= */
.lms-quiz { margin: 2rem 0 0; padding: 1.5rem; background: var(--cream); border: 1px solid var(--border); border-radius: 12px; }
.lms-quiz-top { margin-bottom: 1.25rem; }
.lms-quiz-h { display: flex; align-items: center; gap: 0.5rem; margin: 0 0 0.25rem; font-family: var(--font-display); font-weight: 800; font-size: 1.2rem; color: var(--emerald-deep); }
.lms-quiz-h svg { color: var(--gold); }
.lms-quiz-sub { margin: 0; font-size: 0.9rem; color: var(--muted-foreground); }
.lms-quiz-sub strong { color: var(--emerald-deep); }

.lms-quiz-q { margin: 0 0 1.1rem; padding: 1.1rem 1.2rem; background: #fff; border: 1px solid var(--border); border-radius: 12px; transition: border-color 0.2s ease; }
.lms-quiz-q legend { display: flex; align-items: baseline; gap: 0.5rem; font-weight: 700; color: var(--emerald-deep); padding: 0; line-height: 1.45; }
.lms-quiz-qnum { flex: 0 0 auto; width: 1.6rem; height: 1.6rem; display: inline-flex; align-items: center; justify-content: center; background: var(--emerald-deep); color: #fff; border-radius: 50%; font-size: 0.8rem; }
.lms-quiz-multi { font-size: 0.78rem; font-weight: 700; color: var(--muted-foreground); }
.lms-quiz-opt { display: flex; align-items: center; gap: 0.7rem; margin-top: 0.6rem; padding: 0.6rem 0.8rem; border: 1px solid var(--border); border-radius: 12px; cursor: pointer; transition: background 0.15s ease, border-color 0.15s ease; }
.lms-quiz-opt:hover { border-color: var(--emerald); background: color-mix(in srgb, var(--emerald) 5%, #fff); }
.lms-quiz-opt input { position: absolute; opacity: 0; width: 0; height: 0; }
.lms-quiz-mark { flex: 0 0 auto; width: 1.15rem; height: 1.15rem; border: 2px solid var(--border); border-radius: 50%; display: inline-flex; align-items: center; justify-content: center; transition: all 0.15s ease; }
.lms-quiz-opt input[type="checkbox"] ~ .lms-quiz-mark { border-radius: 12px; }
.lms-quiz-opt input:checked ~ .lms-quiz-mark { border-color: var(--emerald); background: var(--emerald); }
.lms-quiz-opt input:checked ~ .lms-quiz-mark::after { content: ""; width: 0.4rem; height: 0.4rem; background: #fff; border-radius: 50%; }
.lms-quiz-opt input[type="checkbox"]:checked ~ .lms-quiz-mark::after { border-radius: 12px; }
.lms-quiz-opt input:focus-visible ~ .lms-quiz-mark { outline: 2px solid var(--emerald); outline-offset: 2px; }
.lms-quiz-opt-text { flex: 1 1 auto; }

/* Trạng thái chấm */
.lms-quiz-q.is-correct { border-color: var(--emerald); background: color-mix(in srgb, var(--emerald) 6%, #fff); }
.lms-quiz-q.is-wrong { border-color: #e0a3a3; background: #fdf3f3; }
.lms-quiz-q.is-correct legend::after { content: "✓ Đúng"; margin-left: auto; color: var(--emerald); font-size: 0.85rem; }
.lms-quiz-q.is-wrong legend::after { content: "✗ Chưa đúng"; margin-left: auto; color: #b32d2e; font-size: 0.85rem; }
.lms-quiz.is-passed .lms-quiz-opt { cursor: default; }

.lms-quiz-actions { display: flex; align-items: center; gap: 1rem; flex-wrap: wrap; margin-top: 0.5rem; }
.lms-quiz-submit, .lms-quiz-next { display: inline-flex; align-items: center; gap: 0.4rem; }
.lms-quiz-feedback { font-weight: 600; }
.lms-quiz-feedback.is-pass { color: var(--emerald-deep); }
.lms-quiz-feedback.is-fail { color: #b32d2e; }
.lms-quiz-feedback.is-warn { color: #b6791f; }
.lms-quiz-passed-flag { display: inline-flex; align-items: center; gap: 0.4rem; font-weight: 700; color: var(--emerald); }

/* Gợi ý ở chân bài khi có quiz */
.lms-foot-hint { display: inline-flex; align-items: center; gap: 0.35rem; font-weight: 600; color: var(--muted-foreground); text-decoration: none; }
.lms-foot-hint:hover { color: var(--emerald-deep); }
.lms-foot-right { display: inline-flex; align-items: center; gap: 0.9rem; }

/* =========================================================================
   2026 LMS UX refresh — catalog, course detail, lesson room
   ========================================================================= */
.lms-catalog {
  padding-block: clamp(1.25rem, 1rem + 2vw, 3.25rem) clamp(2.5rem, 2rem + 3vw, 5rem);
}

.lms-cat-head {
  position: relative;
  align-items: stretch;
  gap: clamp(1.25rem, 1rem + 2vw, 2.5rem);
  margin-bottom: clamp(1.5rem, 1rem + 2vw, 2.75rem);
  padding: clamp(1.25rem, 1rem + 2vw, 2.25rem);
  border: 1px solid color-mix(in srgb, var(--emerald) 18%, var(--border));
  border-radius: 12px;
  background:
    linear-gradient(135deg, color-mix(in srgb, var(--sky-soft) 78%, #fff) 0%, #fff 48%, color-mix(in srgb, var(--ivory) 70%, #fff) 100%);
  box-shadow: var(--shadow-soft);
  overflow: hidden;
}

.lms-cat-head::before {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: 4px;
  background: linear-gradient(90deg, var(--emerald), var(--teal), var(--gold));
}

.lms-cat-title { letter-spacing: 0; max-width: 760px; }
.lms-cat-sub { max-width: 660px; }

.lms-cat-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.75rem;
  width: min(560px, 100%);
  margin-top: 1.15rem;
}

.lms-cat-stats span {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  min-width: 0;
  padding: 0.85rem 0.95rem;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.72);
  color: var(--muted-foreground);
  font-size: 0.82rem;
  font-weight: 700;
}

.lms-cat-stats strong {
  color: var(--emerald-deep);
  font-family: var(--font-display);
  font-size: 1.35rem;
  line-height: 1;
}

.lms-search {
  align-self: flex-start;
  width: min(360px, 100%);
  border-radius: 12px;
  box-shadow: none;
}

.lms-feature {
  border-radius: 12px;
  border-color: color-mix(in srgb, var(--emerald) 18%, var(--border));
}

.lms-feature-media::after {
  content: "";
  position: absolute;
  inset: auto 0 0;
  height: 40%;
  background: linear-gradient(180deg, transparent, rgba(23, 99, 58, 0.62));
}

.lms-feature-badge,
.lms-feature-price { border-radius: 12px; }
.lms-feature-title { letter-spacing: 0; }

.lms-cat-more-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 1.1rem;
}

.lms-cat-more-head .lms-section-h { margin: 0; }

.single-cph_course .lms-course {
  padding-block: clamp(1rem, 0.8rem + 1.5vw, 2.25rem) 4rem;
}

.single-cph_course .lms-course-head {
  position: relative;
  margin: 0.4rem 0 1.4rem;
  padding: clamp(1.25rem, 1rem + 2vw, 2rem);
  border: 1px solid color-mix(in srgb, var(--emerald) 18%, var(--border));
  border-radius: 12px;
  background:
    linear-gradient(135deg, color-mix(in srgb, var(--sky-soft) 65%, #fff), #fff 52%, color-mix(in srgb, var(--ivory) 55%, #fff));
  box-shadow: var(--shadow-soft);
}

.single-cph_course .lms-course-title { max-width: 920px; letter-spacing: 0; }
.single-cph_course .lms-course-layout { gap: clamp(1.25rem, 1rem + 2vw, 2.25rem); }

.lms-course-thumb,
.lms-enroll,
.lms-course-section,
.lms-review-item,
.lms-review-form,
.lms-review-summary,
.cph-instructor-card {
  border-radius: 12px !important;
}

.lms-course-thumb { margin-bottom: 1.15rem; }

.lms-course-tabs {
  position: sticky;
  top: calc(var(--header-h-scrolled, 3.75rem) + 0.75rem);
  z-index: 8;
  width: 100%;
  justify-content: flex-start;
  margin-bottom: 1.35rem;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(14px);
  box-shadow: var(--shadow-soft);
}

.lms-course-tabs a { border-radius: 12px; }

.lms-course-section {
  padding: clamp(1.1rem, 0.9rem + 1vw, 1.5rem);
  border: 1px solid var(--border);
  background: #fff;
  box-shadow: var(--shadow-soft);
}

.lms-course-section .lms-section-h { margin: 0 0 1.5rem; } /* thêm khoảng trống dưới tiêu đề mục cho thoáng, chuyên nghiệp */
.lms-course-desc > :first-child { margin-top: 0; }
.lms-course-desc > :last-child { margin-bottom: 0; }

.lms-cur-item a {
  border-radius: 12px;
  background: color-mix(in srgb, var(--sky-soft) 18%, #fff);
}

.lms-cur-num,
.lms-cur-icon { border-radius: 12px; }

.lms-enroll {
  border-color: color-mix(in srgb, var(--gold) 30%, var(--border));
  background: linear-gradient(180deg, #fff, color-mix(in srgb, var(--ivory) 34%, #fff));
}

.cph-course-includes__list li {
  align-items: flex-start;
  gap: 0.65rem;
}

.lms-lesson {
  background: color-mix(in srgb, var(--sky-soft) 22%, #fff);
}

.lms-lesson-bar {
  position: sticky;
  top: var(--header-h-scrolled, 3.75rem);
  z-index: 20;
  background: linear-gradient(90deg, var(--emerald-deep), color-mix(in srgb, var(--teal) 42%, var(--emerald-deep)));
  box-shadow: 0 12px 30px -28px rgba(0, 0, 0, 0.5);
}

.lms-lesson-layout { min-height: calc(100vh - var(--header-h-scrolled, 3.75rem)); }

.lms-lesson-nav {
  background: #fff;
  border-right: 1px solid var(--border);
}

@media (min-width: 1024px) {
  .lms-lesson-nav {
    position: sticky;
    top: calc(var(--header-h-scrolled, 3.75rem) + 50px);
  }
}

.lms-lesson-nav a,
.lms-materials-list a,
.lms-quiz-q,
.lms-quiz-opt,
.lms-lesson-locked,
.lms-materials,
.lms-quiz {
  border-radius: 12px;
}

.lms-lesson-main { background: transparent; }
.lms-lesson-body {
  max-width: 900px;
  margin-block: clamp(1rem, 1vw, 1.5rem) 3rem;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: #fff;
  box-shadow: var(--shadow-soft);
}

.lms-lesson-title { letter-spacing: 0; }
.lms-lesson-video { border-radius: 12px; }

@media (max-width: 767px) {
  .lms-cat-head { padding: 1.1rem; }
  .lms-cat-stats { grid-template-columns: 1fr; }
  .lms-search { width: 100%; }
  .lms-feature-body { padding: 1.1rem; }
  .lms-course-meta-item { width: 100%; justify-content: flex-start; }
  .lms-course-tabs {
    overflow-x: auto;
    flex-wrap: nowrap;
    top: 0.5rem;
  }
  .lms-course-tabs a { flex: 0 0 auto; }
  .lms-course-section { padding: 1rem; }
  .lms-lesson-bar { top: 0; align-items: flex-start; flex-direction: column; }
  .lms-lesson-back span { max-width: 82vw; }
  .lms-lesson-nav { max-height: none; border-right: 0; border-bottom: 1px solid var(--border); }
  .lms-lesson-body { margin: 0; border-width: 1px 0 0; border-radius: 0; }
  .lms-lesson-foot { align-items: stretch; flex-direction: column; }
  .lms-complete-form, .lms-foot-right { width: 100%; justify-content: stretch; }
  .lms-lesson-next, .lms-complete-form .btn-gold { width: 100%; justify-content: center; }
}

/* =========================================================================
   ĐĂNG NHẬP / ĐĂNG KÝ — trang Tài khoản (template-lms-auth.php)
   ====================================================================== */
.lms-auth { max-width: 60rem; }
.lms-auth-head { text-align: center; margin-bottom: 1.75rem; }
.lms-auth-head h1 { margin: 0 0 0.5rem; font-family: var(--font-display, inherit); color: var(--emerald-deep); }
.lms-auth-head p { margin: 0 auto; max-width: 36rem; color: var(--muted-foreground); }

.lms-auth-alert {
  max-width: 40rem; margin: 0 auto 1.5rem; padding: 0.85rem 1.1rem;
  border: 1px solid color-mix(in srgb, #c0392b 30%, var(--border));
  background: color-mix(in srgb, #c0392b 7%, #fff); color: #a32d22;
  border-radius: 12px; font-weight: 600; text-align: center;
}

.lms-auth-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 1.25rem;
  align-items: start;
}
.lms-auth-grid.is-single { grid-template-columns: minmax(0, 30rem); justify-content: center; }

.lms-auth-card { padding: 1.75rem; }
.lms-auth-card h2 {
  margin: 0 0 1.1rem; font-family: var(--font-display, inherit);
  font-size: 1.3rem; color: var(--emerald-deep);
}

.lms-auth-form { display: flex; flex-direction: column; gap: 0.9rem; }
.lms-auth-field { display: flex; flex-direction: column; gap: 0.35rem; }
.lms-auth-field span { font-size: 0.85rem; font-weight: 600; color: var(--emerald-deep); }
.lms-auth-field input {
  width: 100%; padding: 0.7rem 0.85rem; font: inherit;
  border: 1px solid var(--border); border-radius: 12px; background: #fff;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.lms-auth-field input:focus {
  outline: none; border-color: var(--emerald);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--emerald) 22%, transparent);
}

.lms-auth-remember {
  display: inline-flex; align-items: center; gap: 0.45rem;
  font-size: 0.85rem; color: var(--muted-foreground);
}
.lms-auth-remember input { accent-color: var(--emerald); }

.lms-auth-submit { justify-content: center; margin-top: 0.3rem; }
.lms-auth-forgot {
  align-self: center; font-size: 0.85rem; color: var(--emerald);
  text-decoration: none;
}
.lms-auth-forgot:hover { text-decoration: underline; }
.lms-auth-terms { margin: 0.2rem 0 0; font-size: 0.78rem; color: var(--muted-foreground); }

/* Honeypot: ẩn hoàn toàn khỏi người dùng (bot vẫn nhìn thấy & điền). */
.lms-auth-hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

@media (max-width: 767px) {
  .lms-auth-grid { grid-template-columns: 1fr; }
}

/* =========================================================================
   TRANG KHÓA — Nội dung chi tiết (outcomes / đối tượng / yêu cầu / FAQ)
   ====================================================================== */

/* "Bạn sẽ học được gì" — lưới 2 cột, tích xanh */
.lms-outcomes {
  list-style: none; margin: 0; padding: 0;
  display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0.75rem 1.5rem;
}
.lms-outcomes li { display: flex; align-items: flex-start; gap: 0.6rem; line-height: 1.55; }
.lms-outcomes li .icon-sm {
  flex: 0 0 auto; margin-top: 0.18rem; color: #fff;
  background: var(--emerald); border-radius: 999px; padding: 3px; width: 1.3rem; height: 1.3rem;
}

/* Bullet list dùng chung (đối tượng / yêu cầu) */
.lms-bullets { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 0.6rem; }
.lms-bullets li { display: flex; align-items: flex-start; gap: 0.6rem; line-height: 1.55; }
.lms-bullets li .icon-sm { flex: 0 0 auto; margin-top: 0.18rem; color: var(--emerald); }

/* Đối tượng + Yêu cầu: 2 cột */
.lms-ar-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1.5rem 2rem; }
.lms-ar-col .lms-section-h { margin-top: 0; font-size: 1.15rem; }

/* FAQ accordion */
.lms-faq { display: flex; flex-direction: column; gap: 0.6rem; }
.lms-faq-item {
  border: 1px solid var(--border); border-radius: 12px; background: #fff; overflow: hidden;
}
.lms-faq-item summary {
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
  padding: 0.95rem 1.1rem; cursor: pointer; list-style: none;
  font-weight: 700; color: var(--emerald-deep); font-family: var(--font-display, inherit);
}
.lms-faq-item summary::-webkit-details-marker { display: none; }
.lms-faq-item summary .icon-sm { flex: 0 0 auto; color: var(--emerald); transition: transform 0.25s var(--ease-out, ease); }
.lms-faq-item[open] summary .icon-sm { transform: rotate(180deg); }
.lms-faq-item summary:hover { background: color-mix(in srgb, var(--emerald) 5%, #fff); }
.lms-faq-a { padding: 0 1.1rem 1.05rem; color: var(--muted-foreground); line-height: 1.7; }

@media (max-width: 640px) {
  .lms-outcomes, .lms-ar-grid { grid-template-columns: 1fr; }
}

/* =========================================================================
   GIÁO TRÌNH THEO CHƯƠNG (gập-mở)
   ====================================================================== */
.lms-chapters { display: flex; flex-direction: column; gap: 0.7rem; }
.lms-chapter { border: 1px solid var(--border); border-radius: 12px; overflow: hidden; background: #fff; }
.lms-chapter-head {
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
  padding: 0.9rem 1.1rem; cursor: pointer; list-style: none;
  background: color-mix(in srgb, var(--emerald) 5%, #fff);
  font-family: var(--font-display, inherit); font-weight: 700; color: var(--emerald-deep);
}
.lms-chapter-head::-webkit-details-marker { display: none; }
.lms-chapter-head:hover { background: color-mix(in srgb, var(--emerald) 9%, #fff); }
.lms-chapter-title { min-width: 0; overflow: hidden; text-overflow: ellipsis; }
.lms-chapter-meta { display: inline-flex; align-items: center; gap: 0.5rem; flex: 0 0 auto; font-size: 0.85rem; font-weight: 600; color: var(--muted-foreground); }
.lms-chapter-meta em { font-style: normal; font-weight: 700; color: var(--emerald); }
.lms-chapter-meta .icon-sm { transition: transform 0.25s var(--ease-out, ease); color: var(--emerald); }
.lms-chapter[open] .lms-chapter-meta .icon-sm { transform: rotate(180deg); }
/* Danh sách bài bên trong chương: bỏ viền ngoài (đã có viền chương) */
.lms-chapter .lms-curriculum { border: 0; border-radius: 0; }
.lms-chapter .lms-curriculum .lms-cur-item:first-child { border-top: 1px solid var(--border); }

/* =========================================================================
   GHI CHÚ BÀI HỌC (tự động lưu)
   ====================================================================== */
.lms-notes-sec { margin: 1.5rem 0; }
.lms-notes-h { display: flex; align-items: center; gap: 0.5rem; font-size: 1.05rem; font-weight: 700; color: var(--emerald-deep); font-family: var(--font-display, inherit); margin: 0 0 1.4rem; }
.lms-notes-h .icon-sm { color: var(--emerald); }
.lms-notes-text {
  width: 100%; padding: 0.85rem 0.95rem; font: inherit; line-height: 1.6;
  border: 1px solid var(--border); border-radius: 12px; background: color-mix(in srgb, var(--gold) 5%, #fff);
  resize: vertical; min-height: 6rem; transition: border-color 0.2s, box-shadow 0.2s;
}
.lms-notes-text:focus { outline: none; border-color: var(--emerald); box-shadow: 0 0 0 3px color-mix(in srgb, var(--emerald) 18%, transparent); }
.lms-notes-foot { display: flex; align-items: center; justify-content: space-between; gap: 1rem; margin-top: 0.6rem; }
.lms-notes-status { font-size: 0.82rem; color: var(--muted-foreground); }
.lms-notes-status.is-ok { color: var(--emerald); font-weight: 600; }
.lms-notes-status.is-err { color: #c0392b; font-weight: 600; }
.lms-notes-save { padding: 0.5rem 1rem; font-size: 0.85rem; }

/* Sidebar trình học — chương gập-mở */
.lms-lesson-nav-chaptered { display: flex; flex-direction: column; gap: 0.3rem; }
.lms-navch { border-bottom: 1px solid var(--border); }
.lms-navch:last-child { border-bottom: 0; }
.lms-navch-head {
  display: flex; align-items: center; justify-content: space-between; gap: 0.6rem;
  padding: 0.7rem 0.9rem; cursor: pointer; list-style: none;
  font-weight: 700; font-size: 0.9rem; color: var(--emerald-deep);
}
.lms-navch-head::-webkit-details-marker { display: none; }
.lms-navch-head span { min-width: 0; overflow: hidden; text-overflow: ellipsis; }
.lms-navch-head .icon-sm { flex: 0 0 auto; color: var(--emerald); transition: transform 0.25s var(--ease-out, ease); }
.lms-navch[open] .lms-navch-head .icon-sm { transform: rotate(180deg); }
.lms-navch > ul { list-style: none; margin: 0; padding: 0; }

/* =========================================================================
   LỘ TRÌNH HỌC — single-cph_path
   ====================================================================== */
.lms-path { padding-block: clamp(1.5rem, 3vw, 2.5rem); max-width: 60rem; }
.lms-path-head { margin-bottom: 1.5rem; }
.lms-path-title { font-family: var(--font-display, inherit); font-weight: 800; font-size: clamp(1.6rem, 1.2rem + 1.8vw, 2.4rem); color: var(--emerald-deep); margin: 0.6rem 0 0.5rem; }
.lms-path-excerpt { color: var(--muted-foreground); max-width: 44rem; line-height: 1.6; margin: 0 0 0.9rem; }
.lms-path-meta { display: flex; flex-wrap: wrap; gap: 0.5rem 1.25rem; }
.lms-path-prog { height: 8px; border-radius: 999px; background: color-mix(in srgb, var(--emerald) 14%, #fff); overflow: hidden; margin-top: 0.9rem; max-width: 28rem; }
.lms-path-prog span { display: block; height: 100%; border-radius: 999px; background: linear-gradient(90deg, var(--emerald), var(--gold)); }
.lms-path-desc { margin-bottom: 1.75rem; line-height: 1.75; }

/* Stepper dọc */
.lms-path-steps { list-style: none; margin: 0; padding: 0; counter-reset: step; }
.lms-path-step { position: relative; display: grid; grid-template-columns: 2.6rem 1fr; gap: 1rem; padding-bottom: 1.5rem; }
.lms-path-step:not(:last-child)::before {
  content: ""; position: absolute; left: 1.3rem; top: 2.6rem; bottom: 0; width: 2px;
  background: color-mix(in srgb, var(--emerald) 22%, var(--border)); transform: translateX(-50%);
}
.lms-path-step-num {
  position: relative; z-index: 1; display: flex; align-items: center; justify-content: center;
  width: 2.6rem; height: 2.6rem; border-radius: 999px; flex: 0 0 auto;
  background: #fff; border: 2px solid color-mix(in srgb, var(--emerald) 35%, var(--border));
  font-family: var(--font-display, inherit); font-weight: 800; color: var(--emerald-deep);
}
.lms-path-step.is-complete .lms-path-step-num { background: var(--emerald); border-color: var(--emerald); color: #fff; }

/* Thẻ khóa trong lộ trình: ngang */
.lms-path-card { display: grid; grid-template-columns: 9rem 1fr auto; gap: 1rem; align-items: center; padding: 0.85rem; }
.lms-path-card-media { display: block; border-radius: 12px; overflow: hidden; aspect-ratio: 16/10; background: color-mix(in srgb, var(--emerald) 10%, var(--cream)); }
.lms-path-card-media img { width: 100%; height: 100%; object-fit: cover; display: block; }
.lms-path-card-media .icon { width: 2rem; height: 2rem; color: var(--emerald); margin: auto; display: block; }
.lms-path-card-body { min-width: 0; }
.lms-path-card-body h3 { margin: 0 0 0.4rem; font-size: 1.08rem; font-family: var(--font-display, inherit); }
.lms-path-card-body h3 a { color: var(--emerald-deep); text-decoration: none; }
.lms-path-card-body h3 a:hover { color: var(--emerald); }
.lms-path-card-meta { list-style: none; margin: 0 0 0.5rem; padding: 0; display: flex; flex-wrap: wrap; gap: 0.3rem 1rem; font-size: 0.82rem; color: var(--muted-foreground); }
.lms-path-card-meta li { display: inline-flex; align-items: center; gap: 0.3rem; }
.lms-path-card-meta .icon-sm { color: var(--emerald); }
.lms-path-card-cta { flex: 0 0 auto; }

@media (max-width: 680px) {
  .lms-path-card { grid-template-columns: 1fr; }
  .lms-path-card-media { aspect-ratio: 16/7; }
  .lms-path-card-cta { width: 100%; }
  .lms-path-card-cta .btn-gold, .lms-path-card-cta .btn-ghost { width: 100%; justify-content: center; }
}

/* =========================================================================
   DASHBOARD — Hero "Tiếp tục học" + gợi ý khóa (Phase 1.1)
   ====================================================================== */
.lms-dash-hero {
  display: grid; grid-template-columns: 1fr; gap: 0; margin: 0 0 2rem;
  border-radius: 12px; overflow: hidden;
  background: linear-gradient(135deg, var(--emerald-deep), var(--emerald));
  color: #fff; box-shadow: var(--shadow-elegant, 0 22px 50px -30px rgba(15,43,28,.5));
}
@media (min-width: 720px) { .lms-dash-hero { grid-template-columns: 17rem 1fr; align-items: stretch; } }
.lms-dash-hero-media { display: block; overflow: hidden; background: rgba(0,0,0,.15); }
.lms-dash-hero-media img { width: 100%; height: 100%; min-height: 11rem; object-fit: cover; display: block; }
.lms-dash-hero-body { padding: clamp(1.25rem, 3vw, 2rem); display: flex; flex-direction: column; justify-content: center; min-width: 0; }
.lms-dash-hero-eyebrow { font-size: 0.8rem; font-weight: 800; letter-spacing: 0.02em; color: var(--gold); margin-bottom: 0.5rem; }
.lms-dash-hero-title { font-family: var(--font-display); font-weight: 800; font-size: clamp(1.2rem, 1rem + 1vw, 1.65rem); color: #fff; margin: 0 0 1.25rem; line-height: 1.2; }
.lms-dash-hero-prog { background: rgba(255,255,255,0.25) !important; margin-bottom: 0.5rem; }
.lms-dash-hero-prog .lms-progress-bar { background: var(--gold) !important; }
.lms-dash-hero .lms-progress-text { color: rgba(255,255,255,0.88); }
.lms-dash-hero-btn { align-self: flex-start; margin-top: 1rem; }
.lms-dash-suggest { margin-top: 3rem; }
.lms-dash-suggest .lms-section-h { margin-top: 0; }

/* =========================================================================
   MODAL CHÚC MỪNG HOÀN THÀNH KHÓA + confetti (Phase 1.2)
   ====================================================================== */
.lms-congrats { position: fixed; inset: 0; z-index: 9999; display: flex; align-items: center; justify-content: center; padding: 1.25rem; background: rgba(10,30,20,.55); -webkit-backdrop-filter: blur(3px); backdrop-filter: blur(3px); animation: lmsFadeIn .25s ease; }
.lms-congrats.is-closing { animation: lmsFadeOut .25s ease forwards; }
.lms-congrats-box { position: relative; max-width: 30rem; width: 100%; background: #fff; border-radius: 12px; padding: clamp(1.75rem, 4vw, 2.5rem); text-align: center; box-shadow: var(--shadow-elegant, 0 30px 60px -25px rgba(15,43,28,.6)); overflow: hidden; animation: lmsPop .35s var(--ease-out, ease); }
.lms-congrats-close { position: absolute; top: 0.5rem; right: 0.8rem; background: none; border: 0; font-size: 1.7rem; line-height: 1; color: var(--muted-foreground); cursor: pointer; z-index: 2; }
.lms-congrats-ico { display: inline-flex; align-items: center; justify-content: center; width: 4rem; height: 4rem; border-radius: 50%; background: color-mix(in srgb, var(--gold) 22%, #fff); color: var(--gold); margin-bottom: 1rem; }
.lms-congrats-ico .icon { width: 2.2rem; height: 2.2rem; }
.lms-congrats-box h2 { font-family: var(--font-display); font-weight: 800; color: var(--emerald-deep); font-size: 1.5rem; margin: 0 0 0.6rem; }
.lms-congrats-box p { color: var(--muted-foreground); line-height: 1.6; margin: 0 0 1.5rem; }
.lms-congrats-actions { display: flex; flex-wrap: wrap; gap: 0.6rem; justify-content: center; }
.lms-congrats-confetti { position: absolute; inset: 0; pointer-events: none; overflow: hidden; }
.lms-congrats-confetti i { position: absolute; top: -12%; width: 8px; height: 14px; border-radius: 2px; opacity: .9; animation: lmsConfetti 2.8s linear infinite; }
.lms-congrats-confetti i:nth-child(3n) { background: var(--gold); }
.lms-congrats-confetti i:nth-child(3n+1) { background: var(--emerald); }
.lms-congrats-confetti i:nth-child(3n+2) { background: var(--teal, #2bb3a3); }
.lms-congrats-confetti i:nth-child(1){left:6%;animation-delay:0s}
.lms-congrats-confetti i:nth-child(2){left:16%;animation-delay:.3s}
.lms-congrats-confetti i:nth-child(3){left:27%;animation-delay:.6s}
.lms-congrats-confetti i:nth-child(4){left:38%;animation-delay:.15s}
.lms-congrats-confetti i:nth-child(5){left:48%;animation-delay:.9s}
.lms-congrats-confetti i:nth-child(6){left:58%;animation-delay:.45s}
.lms-congrats-confetti i:nth-child(7){left:68%;animation-delay:1.1s}
.lms-congrats-confetti i:nth-child(8){left:78%;animation-delay:.2s}
.lms-congrats-confetti i:nth-child(9){left:88%;animation-delay:.75s}
.lms-congrats-confetti i:nth-child(10){left:94%;animation-delay:1.3s}
.lms-congrats-confetti i:nth-child(11){left:34%;animation-delay:1.5s}
.lms-congrats-confetti i:nth-child(12){left:62%;animation-delay:1.7s}
@keyframes lmsConfetti { 0%{transform:translateY(0) rotate(0);opacity:1} 100%{transform:translateY(115vh) rotate(560deg);opacity:0} }
@keyframes lmsFadeIn { from{opacity:0} to{opacity:1} }
@keyframes lmsFadeOut { from{opacity:1} to{opacity:0} }
@keyframes lmsPop { from{transform:scale(.92);opacity:0} to{transform:scale(1);opacity:1} }
@media (prefers-reduced-motion: reduce) { .lms-congrats-confetti i { animation: none; display: none; } .lms-congrats, .lms-congrats-box { animation: none; } }

/* =========================================================================
   HỎI ĐÁP bài học (Phase 1.3)
   ====================================================================== */
.lms-qa { margin: 1.75rem 0; }
.lms-qa-h { display: flex; align-items: center; gap: 0.5rem; font-size: 1.15rem; font-weight: 800; color: var(--emerald-deep); font-family: var(--font-display, inherit); margin: 0 0 1.1rem; }
.lms-qa-h .icon-sm { color: var(--emerald); }
.lms-qa-count { color: var(--muted-foreground); font-weight: 600; }
.lms-qa-form textarea { width: 100%; padding: 0.8rem 0.95rem; font: inherit; line-height: 1.6; border: 1px solid var(--border); border-radius: 12px; background: #fff; resize: vertical; min-height: 3.4rem; transition: border-color .2s, box-shadow .2s; }
.lms-qa-form textarea:focus { outline: none; border-color: var(--emerald); box-shadow: 0 0 0 3px color-mix(in srgb, var(--emerald) 16%, transparent); }
.lms-qa-form-foot { display: flex; justify-content: flex-end; margin-top: 0.55rem; }
.lms-qa-ask { margin-bottom: 1.5rem; }
.lms-qa-login { color: var(--muted-foreground); }
.lms-qa-login a { color: var(--emerald); font-weight: 700; }
.lms-qa-empty { color: var(--muted-foreground); }
.lms-qa-list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 1.25rem; }
.lms-qa-item { border-top: 1px solid var(--border); padding-top: 1.25rem; }
.lms-qa-q { display: flex; gap: 0.8rem; }
.lms-qa-avatar { flex: 0 0 auto; width: 2.4rem; height: 2.4rem; border-radius: 50%; background: var(--emerald-deep); color: #fff; display: flex; align-items: center; justify-content: center; font-weight: 800; font-size: 0.95rem; }
.lms-qa-main { min-width: 0; flex: 1 1 auto; }
.lms-qa-meta { margin: 0 0 0.3rem; font-size: 0.85rem; color: var(--muted-foreground); }
.lms-qa-meta strong { color: var(--emerald-deep); font-weight: 700; }
.lms-qa-badge { display: inline-block; background: var(--gold); color: var(--emerald-deep); font-size: 0.68rem; font-weight: 800; padding: 0.1rem 0.45rem; border-radius: 999px; vertical-align: middle; }
.lms-qa-date { opacity: 0.8; }
.lms-qa-text { line-height: 1.65; color: var(--ink, #25372e); white-space: pre-line; }
.lms-qa-answers { list-style: none; margin: 0.85rem 0 0; padding: 0 0 0 0.95rem; border-left: 2px solid var(--border); display: flex; flex-direction: column; gap: 0.85rem; }
.lms-qa-answer.is-instructor { border-left: 2px solid var(--gold); margin-left: -0.95rem; padding-left: 0.95rem; }
.lms-qa-reply-toggle { margin-top: 0.7rem; background: none; border: 0; padding: 0; color: var(--emerald); font-weight: 700; font-size: 0.85rem; cursor: pointer; }
.lms-qa-reply-toggle:hover { text-decoration: underline; }
.lms-qa-reply { margin-top: 0.7rem; }