/* ===================================================
  Course Hero Section
   =================================================== */
.course-hero {
  position: relative;
  padding: 80px 0 80px;
  overflow: hidden;
}

/* Background layers */

/* Wrapper */
.course-hero__wrapper {
  display: grid;
  align-items: center;
  grid-template-columns: 45% auto;
  gap: 20px 50px;
  margin-top: 60px;
}

/* Thumbnail */
.course-hero__thumbnail {
  background-color: #e9e9fd;
  text-align: center;
  border-radius: 20px;
  position: relative;
  overflow: hidden;
  height: 697px;
}
.course-hero__thumbnail .backdrop {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  z-index: 2;
}
.course-hero__thumbnail .thumb {
  width: 90%;
  height: 90%;
  position: absolute;
  border-radius: 20px;
  object-fit: cover;
  text-align: center;
  z-index: 9;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

/* Content */
.course-hero__content {
  flex: 1;
}

/* Category */
.course-hero__category {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 15px;
}

.course-hero__category span {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-secondary);
  text-transform: uppercase;
  letter-spacing: 1px;
}

/* Title */
.course-hero__title {
  font-size: 36px;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1.3;
  margin-bottom: 20px;
}

/* Description */
.course-hero__description {
  margin-bottom: 25px;
}

.course-hero__description p {
  font-size: 16px;
  line-height: 1.7;
  color: #555;
}

/* Meta */
.course-hero__meta {
  display: flex;
  gap: 30px;
  flex-wrap: wrap;
  margin-bottom: 25px;
}

.course-hero__meta-item {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: 14px;
  font-weight: 700;
  color: var(--color-primary);
  padding: 10px 30px 10px 10px;
  border-right: 2px solid #e5eaf4;
  flex-direction: column;
}
.course-hero__meta-item svg {
  padding: 2px;
  background-color: var(--color-secondary);
  border-radius: 50%;
}
.course-hero__meta-item:last-child {
  border-right: none;
  padding-right: 0;
}
/* ===================================================
  FORM FILTER COURSES
   =================================================== */
.single-courses .course-filter {
  position: relative;
  transform: initial;
  inset: initial;
  margin: 0 auto 2rem;
}

/* ===================================================
  Course Audience Section
   =================================================== */
.course-audience {
  background-color: #ecfcfeb2;
  padding: 40px 0;
}

.course-audience__title {
  font-size: clamp(26px, 2vw, 36px);
  font-weight: 700;
  color: var(--color-primary);
  text-align: center;
  margin-bottom: 40px;
}

.course-audience__list {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.course-audience__item {
  background-color: #fff;
  border-radius: 12px;
  padding: 25px 20px;
  text-align: center;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
  border: 1px solid var(--color-secondary);
}

.course-audience__text {
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-primary);
  margin-bottom: 20px;
}

.course-audience__image {
  width: 120px;
  height: 120px;
  margin: 0 auto;
  border-radius: 50%;

  border: 4px solid transparent;
  border-radius: 50%;
  background: linear-gradient(#fff, #fff) padding-box,
    linear-gradient(148.74deg, #6bf5a2, #36c870, #039d40) border-box;

  overflow: hidden;
}

.course-audience__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ===================================================
  Course Learning Section
   =================================================== */
.course-learning {
  background-color: #f5f9ff;
  padding: 60px 0;
}
.course-learning__title {
  font-size: clamp(26px, 2vw, 36px);
  font-weight: 700;
  color: #1a2b4a;
  text-align: center;
  margin-bottom: 50px;
  line-height: 1.4;
}

.course-learning__highlight {
  color: var(--color-primary);
  font-weight: 700;
  border-radius: 6px;
  margin-top: 5px;
  display: inline-block;
  position: relative;
  z-index: 9999;
  font-size: clamp(32px, 2.5vw, 50px);
  padding: 10px 2rem;
}
.course-learning__highlight svg {
  position: absolute;
  left: 50%;
  top: 45%;
  transform: translate(-50%, -50%);
  z-index: -1;
  width: 100%;
}

.course-learning__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px 65px;
}

.course-learning__item {
  padding-bottom: 25px;
  border-bottom: 1px solid var(--color-primary);
}

.course-learning__item-title {
  font-size: clamp(18px, 1vw, 22px);
  font-weight: 600;
  color: #1a2b4a;
  margin-bottom: 15px;
}

.course-learning__list {
  padding-left: 20px;
  margin: 0;
}

.course-learning__list li {
  font-size: 14px;
  color: #555;
  line-height: 1.8;
  position: relative;
  list-style-type: disc;
}

.course-learning__list li::marker {
  color: #1a2b4a;
}

/* ===================================================
  Teaching Method Section
   =================================================== */
.teaching-method {
  background-color: #1a2b4a;
  padding: 60px 0;
}

.teaching-method__wrapper {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 50px;
}
/* Content */

.teaching-method__title {
  font-size: clamp(26px, 2vw, 36px);
  font-weight: 700;
  color: #fff;
  margin-bottom: 30px;
}

.teaching-method__list {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.teaching-method__item {
  position: relative;
  padding: 1rem;
  padding-left: 1.5rem;
  background-color: #dedada33;
  border-radius: 10px;
  transition: all 0.5s ease;
  overflow: hidden;
  opacity: 0.5;
}

/* Border left bằng ::before */
.teaching-method__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 4px;
  height: 100%;
  background-color: #039d40;
  transform: translateX(-10px);
  transition: all 0.4s;
}

.teaching-method__item:hover::before {
  width: 4px;
  transform: translateX(0);
}


/* Active */
.teaching-method__item.is-active {
  opacity: 1;

}
.teaching-method__item.is-active::before {
  transform: translateX(0);
}

/* Fix font-weight transition - dùng opacity trick */
.teaching-method__item p {
  font-size: 15px;
  line-height: 1.7;
  color: #fff;
  margin: 0;
  opacity: 0.8;
  font-weight: 500;
  transition: color 0.4s ease;
}

.teaching-method__item:hover p {
  opacity: 1;
}

.teaching-method__item p {
  transition: opacity 0.4s ease, color 0.4s ease;
}

/* Image */
.teaching-method__image {
  position: relative;
  height: 600px;
}

.teaching-method__image > img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 12px;
}
/* ===================================================
  Course Roadmap Section
   =================================================== */
.course-roadmap {
  padding: 60px 0;
  background-color: #fff;
}

.course-roadmap__title {
  font-size: clamp(26px, 2vw, 36px);
  font-weight: 700;
  color: var(--color-primary);
  text-align: center;
  margin-bottom: 40px;
}

.course-roadmap__list {
  display: flex;
  flex-direction: column;
  gap: 30px;
}

/* Item */
.course-roadmap__item {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  background-color: #fff;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 2px 15px rgba(0, 0, 0, 0.08);
  min-height: 480px;
}

/* Image */
.course-roadmap__image {
  position: relative;
  background-color: #f1f6fd;
  min-height: 480px;
}

.course-roadmap__image > img {
  width: 90%;
  height: 90%;
  object-fit: cover;
  border-radius: 20px;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

/* Content */
.course-roadmap__content {
  background-color: #e4edfb;
  padding: 30px;
  max-height: 480px;
  overflow-y: auto;
}

.course-roadmap__item-title {
  font-size: clamp(22px, 2vw, 30px);
  font-weight: 700;
  color: #1a2b4a;
  margin-bottom: 20px;
  line-height: 1.4;
  margin-top: 0;
}

.course-roadmap__objective {
  font-size: 15px;
  line-height: 1.7;
  color: #333;
  margin-bottom: 15px;
}

.course-roadmap__objective strong {
  color: #1a2b4a;
}

.course-roadmap__detail {
  font-size: 15px;
  color: #333;
}

.course-roadmap__detail > strong {
  display: block;
  color: #1a2b4a;
  margin-bottom: 10px;
}

.course-roadmap__detail ul {
  padding-left: 20px;
  margin: 0;
}

.course-roadmap__detail li {
  line-height: 1.8;
  color: #555;
  list-style: disc;
}

.course-roadmap__detail li::marker {
  color: #1a2b4a;
}
/* Custom Scrollbar */
.course-roadmap__content::-webkit-scrollbar {
  width: 6px;
}

.course-roadmap__content::-webkit-scrollbar-track {
  background: #f1f1f1;
  border-radius: 10px;
}

.course-roadmap__content::-webkit-scrollbar-thumb {
  background: #1a2b4a;
  border-radius: 10px;
  transition: background 0.3s ease;
}

.course-roadmap__content::-webkit-scrollbar-thumb:hover {
  background: #039d40;
}

/* ===================================================
  Classroom Gallery Section
   =================================================== */
.classroom-gallery {
  padding: 60px 0;
  background-color: #fff;
}

.classroom-gallery__title {
  font-size: clamp(26px, 2vw, 36px);
  font-weight: 700;
  color: var(--color-primary);
  text-align: center;
  margin-bottom: 40px;
}

/* Slider */
.classroom-gallery__slider {
  margin: 0 -10px;
}

.classroom-gallery__item {
  padding: 0 10px;
}

.classroom-gallery__item img {
  width: 100%;
  height: 280px;
  object-fit: cover;
  border-radius: 12px;
}

/* ===================================================
  Course Register Section
   =================================================== */
.course-register {
  padding: 60px 0;
  background-color: var(--color-primary);
}
.course-register__title {
  font-size: clamp(26px, 2vw, 36px);
  font-weight: 700;
  color: #fff;
  text-align: center;
  margin-bottom: 40px;
}
.course-register .main-form {
  background-color: #fff;
  max-width: 992px;
  margin: auto;
}

@media (max-width: 1024px) {
  /* ===================================================
  Course Hero Section
   =================================================== */
  .course-hero__wrapper {
    grid-template-columns: 1fr;
    gap: 30px;
  }

  .course-hero__thumbnail {
    height: 600px;
  }

  .course-hero__title {
    font-size: 28px;
  }

  /* ===================================================
  Course Audience Section
   =================================================== */
  .course-audience__list {
    grid-template-columns: repeat(2, 1fr);
  }

  /* ===================================================
  Course Learning Section
   =================================================== */
  .course-learning__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  /* ===================================================
  Teaching Method Section
   =================================================== */
  .teaching-method__wrapper {
    grid-template-columns: 1fr;
    gap: 15px;
  }
  .teaching-method__content {
    margin-bottom: 1rem;
  }
  .teaching-method__image {
    max-height: 450px;
  }

  /* ===================================================
  Course Roadmap Section
   =================================================== */
  .course-roadmap__item {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  /* ===================================================
  Course Hero Section
   =================================================== */
  .course-hero__title {
    font-size: 26px;
  }

  .course-hero__meta-item {
    border-right: none;
    padding-right: 0;
  }

  /* ===================================================
  Course Audience Section
   =================================================== */
  .course-audience__list {
    grid-template-columns: 1fr;
  }

  /* ===================================================
  Course Learning Section
   =================================================== */
  .course-learning__grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 576px) {
  /* ===================================================
  Course Hero Section
   =================================================== */
  .course-hero {
    padding: 40px 0 60px;
  }

  .course-hero__thumbnail {
    height: 500px;
  }

  .course-hero__title {
    font-size: 24px;
  }

  .course-hero__meta {
    flex-direction: column;
    gap: 15px;
  }

  .course-roadmap__image {
    min-height: 350px;
  }
  .course-roadmap__content {
    padding: 15px;
  }
}