/* ===== LAYOUT DESKTOP ===== */

#ung_dung {
  display: flex;
  min-height: 100vh;
}

/* SIDEBAR */
.thanh_ben {
  width: var(--do-rong-sidebar);
  min-height: 100vh;
  background: var(--nen-sidebar);
  border-right: 1px solid #e2e8f0;
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  z-index: var(--z-sidebar);
  box-shadow: 2px 0 8px rgba(0,0,0,0.06);
  overflow-y: auto;
}

.vung_logo_sidebar {
  padding: var(--khoang-lg) var(--khoang-md);
  border-bottom: 1px solid #e2e8f0;
  display: flex;
  align-items: center;
  gap: var(--khoang-md);
  background: var(--nen-header);
}

.logo_sidebar {
  width: 48px;
  height: 48px;
  object-fit: contain;
  flex-shrink: 0;
}

.ten_app_sidebar {
  font-size: 20px;
  font-weight: 800;
  color: var(--mau-chinh);
  line-height: 1.2;
}

.thong_tin_nguoi_dung_sidebar {
  padding: var(--khoang-md) var(--khoang-md) var(--khoang-lg);
  border-bottom: 1px solid #e2e8f0;
  background: linear-gradient(135deg, #f0fdf4, #e6f4f1);
}

.ten_nguoi_dung {
  font-weight: 700;
  font-size: var(--font-co-vua);
  color: var(--mau-chinh);
}

.chuc_danh_nguoi_dung {
  font-size: var(--font-co-nho);
  color: var(--chu-phu);
  margin-top: 2px;
}

/* Nút Thoát + Tìm kiếm trong sidebar — đồng nhất */
.hang_nut_sidebar {
  display: flex;
  gap: var(--khoang-xs);
  margin-top: var(--khoang-sm);
}

.nut_dang_xuat_sidebar,
.nut_tim_kiem_sidebar {
  flex: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--khoang-xs);
  margin-top: 0;
  padding: 6px 8px;
  background: none;
  border: 1px solid var(--mau-chinh-nhe);
  border-radius: var(--goc-vua);
  font-size: 12px;
  font-weight: 800;
  color: var(--mau-chinh);
  cursor: pointer;
  transition: var(--chuyen-tiep);
  font-family: var(--font-chinh);
  white-space: nowrap;
  min-height: 32px;
}

.nut_dang_xuat_sidebar:hover,
.nut_tim_kiem_sidebar:hover {
  background: var(--mau-chinh);
  color: white;
}

.menu_sidebar {
  flex: 1;
  padding: var(--khoang-xl) var(--khoang-sm) var(--khoang-md);
  display: flex;
  flex-direction: column;
  gap: var(--khoang-xs);
  border-top: 1px solid transparent;
  margin-top: var(--khoang-sm);
}

.muc_menu_sidebar {
  display: flex;
  align-items: center;
  gap: var(--khoang-md);
  padding: 10px var(--khoang-md);
  border-radius: var(--goc-vua);
  cursor: pointer;
  transition: var(--chuyen-tiep);
  border: none;
  background: none;
  text-align: left;
  width: 100%;
  font-family: var(--font-chinh);
  font-size: var(--font-co-vua);
  font-weight: 500;
  color: var(--chu-chinh);
}

.muc_menu_sidebar:hover {
  background: var(--mau-chinh-nhat);
  color: var(--mau-chinh);
}

.muc_menu_sidebar.hoat_dong {
  background: var(--mau-chinh);
  color: white;
  font-weight: 600;
  box-shadow: var(--bong-chinh);
}

.bieu_tuong_menu {
  font-size: 18px;
  flex-shrink: 0;
  width: 24px;
  text-align: center;
}

/* MAIN CONTENT - Desktop */
.vung_noi_dung_chinh {
  margin-left: var(--do-rong-sidebar);
  flex: 1;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.thanh_tren_desktop {
  display: none;
  height: var(--cao-header);
  background: var(--nen-header);
  border-bottom: 1px solid #e2e8f0;
  align-items: center;
  padding: 0 var(--khoang-xl);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--bong-nhe);
}

.tieu_de_trang {
  font-size: 26px;
  font-weight: 800;
  line-height: 1.2;
  color: var(--mau-chinh);
}

.noi_dung_chinh {
  flex: 1;
  padding: var(--khoang-xl);
  overflow-y: auto;
}

.man_hinh_tim_kiem {
  padding: 18px;
  background: #ffffff;
  border: 1px solid #e2e8f0;
  border-radius: 14px;
  box-shadow: var(--bong-nhe);
}

.dau_tim_kiem {
  margin-bottom: 14px;
}

.nhan_tim_kiem {
  color: var(--chu-phu);
  font-size: 12px;
  font-weight: 900;
  text-transform: uppercase;
}

.tieu_de_tim_kiem {
  margin: 2px 0 0;
  color: var(--mau-chinh);
  font-size: 20px;
  font-weight: 900;
  line-height: 1.15;
}

/* Mobile: chữ Tra cứu nhỏ hơn */
body.man_hinh_doc .tieu_de_tim_kiem {
  font-size: 16px;
}

.cum_tim_kiem_desktop {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 128px;
  gap: 10px;
}

.o_tim_kiem_desktop,
.nut_tim_kiem_desktop {
  min-height: 44px;
  border-radius: var(--goc-vua);
  font-family: var(--font-chinh);
  font-size: 14px;
  font-weight: 800;
}

.o_tim_kiem_desktop {
  border: 1.5px solid var(--mau-chinh-nhe);
  background: #f8fffe;
  color: var(--chu-chinh);
  padding: 0 14px;
}

.nut_tim_kiem_desktop {
  border: 1px solid var(--mau-chinh);
  background: var(--mau-chinh);
  color: #ffffff;
}

/* SECTION */
.muc_section {
  margin-bottom: 28px;
  background: #ffffff;
  border-radius: var(--goc-lon);
  border: 1px solid #e2e8f0;
  box-shadow: var(--bong-nhe);
  overflow: hidden;
}

.tieu_de_section {
  font-size: var(--font-co-xl);
  font-weight: 700;
  color: #ffffff;
  background: linear-gradient(90deg, var(--mau-chinh) 0%, #047a60 100%);
  padding: 12px 20px;
  display: flex;
  align-items: center;
  gap: var(--khoang-sm);
  margin: 0;
  letter-spacing: 0.01em;
}

/* GRID NÚT - Desktop */
.luoi_nut {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: var(--khoang-md);
  padding: var(--khoang-md);
  background: #f8fffe;
}

.the_nut {
  display: flex;
  flex-direction: column;
  min-height: 52px;
  padding: 8px 14px;
  background: white;
  border: 1.5px solid #e2e8f0;
  border-radius: var(--goc-vua);
  cursor: pointer;
  transition: var(--chuyen-tiep);
  text-align: left;
  font-family: var(--font-chinh);
  color: var(--chu-chinh);
  box-shadow: 0 1px 3px rgba(0,0,0,0.07);
  text-decoration: none;
  width: 100%;
  justify-content: center;
}

.the_nut:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(2,91,72,0.18);
  border-color: var(--mau-chinh);
  background: var(--mau-chinh-nhat);
}

.the_nut:active {
  transform: translateY(-1px);
}

.dau_nut {
  display: flex;
  align-items: center;
  gap: var(--khoang-sm);
}

.chu_nut {
  display: flex;
  flex-direction: column;
  gap: 3px;
  flex: 1;
}

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

.ten_nut {
  font-size: 20px;
  font-weight: 700;
  color: var(--chu-chinh);
  line-height: 1.25;
  text-align: left;
}

.mo_ta_nut {
  display: none;
}

/* Nút có thumbnail (Topic Đào Tạo) */
.the_nut_topic {
  padding: 0;
  overflow: hidden;
}

.the_nut_topic .noi_dung_nut_topic {
  padding: var(--khoang-md);
}

.the_nut_topic .anh_topic {
  height: 140px;
  width: 100%;
  object-fit: cover;
}

body.giao_dien_chuyen_nghiep .thanh_ben {
  background: #f8fffe;
  border-right: 1px solid #d8ebe4;
  box-shadow: 2px 0 8px rgba(0, 0, 0, 0.06);
}

body.giao_dien_chuyen_nghiep .vung_logo_sidebar {
  min-height: 72px;
  padding: 12px;
  gap: 10px;
  background: #e8fff3;
  border-bottom: 1px solid #cfe7df;
}

body.giao_dien_chuyen_nghiep .logo_sidebar {
  width: 44px;
  height: 44px;
  flex: 0 0 44px;
}

body.giao_dien_chuyen_nghiep .ten_app_sidebar {
  color: #025b48;
  font-size: 17px;
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: 0;
  text-transform: uppercase;
}

body.giao_dien_chuyen_nghiep .thong_tin_nguoi_dung_sidebar {
  padding: 8px 12px 0;
  background: transparent;
  border-bottom: 0;
}

body.giao_dien_chuyen_nghiep .ten_nguoi_dung {
  color: #025b48;
  font-size: 16px;
  font-weight: 900;
  line-height: 1.3;
}

body.giao_dien_chuyen_nghiep .chuc_danh_nguoi_dung {
  color: #64748b;
  font-size: 12px;
  font-weight: 800;
  line-height: 1.25;
  text-transform: uppercase;
}

/* Professional mode sidebar buttons — unified .hang_nut_sidebar handles both */

body.giao_dien_chuyen_nghiep .menu_sidebar {
  padding: 0 12px 16px;
  gap: 4px;
}

body.giao_dien_chuyen_nghiep .muc_menu_sidebar {
  gap: 0;
  min-height: 0;
  margin-bottom: 4px;
  padding: 10px 14px;
  border-radius: 8px;
  color: #1f2937;
  font-size: 14px;
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: 0;
  text-transform: uppercase;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

body.giao_dien_chuyen_nghiep .muc_menu_sidebar:hover {
  background: #edf8f5;
  color: #025b48;
}

body.giao_dien_chuyen_nghiep .muc_menu_sidebar.hoat_dong {
  background: #025b48;
  color: #ffffff;
  box-shadow: 0 8px 20px rgba(2, 91, 72, 0.18);
}

body.giao_dien_chuyen_nghiep .luoi_nut {
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 12px;
  padding: 12px;
  background: #f8fffe;
}

body.giao_dien_chuyen_nghiep .the_nut {
  min-height: 76px;
  padding: 12px 14px;
  border-radius: 8px;
  box-shadow: none;
  border: 1px solid #b3d9d0;
}

body.giao_dien_chuyen_nghiep .the_nut:hover {
  transform: none;
  box-shadow: 0 1px 0 rgba(2,91,72,0.08), 0 10px 24px rgba(15, 23, 42, 0.06);
  background: #f7fbfb;
}

body.giao_dien_chuyen_nghiep .tieu_de_section {
  background: linear-gradient(90deg, #025b48 0%, #04604e 100%);
  min-height: 48px;
  padding: 10px 16px;
  font-size: 14px;
  font-weight: 900;
  line-height: 1.3;
  letter-spacing: 0;
  text-transform: uppercase;
}

body.giao_dien_chuyen_nghiep .ten_nut {
  color: #025b48;
  font-size: 13px;
  font-weight: 900;
  line-height: 1.25;
  letter-spacing: 0;
  text-transform: uppercase;
}

body.giao_dien_chuyen_nghiep .mo_ta_nut {
  color: #374151;
  font-size: 12px;
  font-weight: 600;
  line-height: 1.35;
  text-transform: uppercase;
}