/* ==========================
        HERO
========================== */

.program-hero {
  position: relative;

  min-height: 80vh;

  display: flex;
  align-items: center;
  justify-content: center;

  overflow: hidden;

  background:
    linear-gradient(rgba(15, 76, 129, 0.75), rgba(15, 76, 129, 0.75)),
    url("../../img/programs/program-hero.jpg");

  background-size: cover;
  background-position: center;
}

/* วงกลมตกแต่ง */

.program-hero::before {
  content: "";

  position: absolute;

  width: 500px;
  height: 500px;

  border-radius: 50%;

  background: rgba(255, 255, 255, 0.08);

  top: -200px;
  right: -100px;
}

.program-hero::after {
  content: "";

  position: absolute;

  width: 350px;
  height: 350px;

  border-radius: 50%;

  background: rgba(255, 255, 255, 0.05);

  bottom: -150px;
  left: -100px;
}

.hero-content {
  position: relative;
  z-index: 2;

  text-align: center;
  color: white;

  max-width: 900px;

  padding: 20px;

  display: flex;
  flex-direction: column;
  align-items: center;

  font-family: var(--font-heading);
}

.hero-subtitle {
  font-size: 1.4rem;

  letter-spacing: 4px;

  font-weight: 600;

  text-transform: uppercase;
}

.hero-content h1 {
  font-size: clamp(3rem, 6vw, 5.5rem);
  text-shadow: 0 4px 20px rgba(0, 0, 0, 0.25);

  line-height: 1.1;

  margin: 20px 0;

  font-weight: 800;
}

.hero-content p {
  font-size: 1.8rem;

  line-height: 1.8;

  max-width: 700px;

  margin: 0 auto;

  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);

  font-family: var(--font-body);
}
/* 
.hero-btn {
  display: inline-flex;

  align-items: center;
  justify-content: center;

  margin-top: 35px;

  padding: 14px 32px;

  background: #ffffff;

  color: var(--primary);

  border-radius: 50px;

  text-decoration: none;

  font-weight: 600;

  transition: 0.3s ease;
}

.hero-btn:hover {
  transform: translateY(-4px);

  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.15);
} */

/* ==========================
        program-selection
========================== */

.program-card {
  background: #fff;
  border-radius: 16px;
  padding: 40px 20px;
  text-align: center;
  cursor: pointer;
  min-height: 220px;

  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);

  transition:
    transform 0.3s ease,
    box-shadow 0.3s ease;

  font-family: var(--font-heading);
}

.program-card:hover {
  transform: translateY(-8px);

  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.12);
}

.program-card i {
  font-size: 2rem;
  margin-bottom: 15px;
  color: #0d3b8e;
}

.program-card h3 {
  margin: 0;
  font-size: 1.5rem;
}

.program-selection {
  padding: 80px 0;
  font-family: "DB Heavent", sans-serif;
}

.program-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-top: 50px;
}

.section-header p {
  font-size: 1.5rem;
  color: #666;
}

/* ==========================
    Grade Selection Section
========================== */

.grade-selection {
  padding: 80px 0;
  background: #f8fafc;
  font-family: "DB Heavent", sans-serif;
}

.grade-grid {
  display: grid;

  grid-template-columns: repeat(6, 1fr);

  gap: 20px;

  margin-top: 50px;
}

.grade-card {
  background: #ffffff;

  padding: 25px;

  border-radius: 14px;

  text-align: center;

  font-weight: 700;

  cursor: pointer;

  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);

  transition: all 0.3s ease;
}

.grade-card:hover {
  transform: translateY(-5px);

  background: #0d3b8e;

  color: white;
}

/* ==========================
    Document List Section
========================== */

.document-list {
  padding: 80px 0;
  font-family: var(--font-body);
}

.document-grid {
  display: grid;

  grid-template-columns: repeat(2, 1fr);

  gap: 24px;

  margin-top: 50px;
}

.document-card {
  background: #fff;

  border-radius: 16px;

  padding: 25px;

  display: flex;

  align-items: center;

  justify-content: space-between;

  gap: 20px;

  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);

  transition: 0.3s ease;
}

.document-card:hover {
  transform: translateY(-5px);

  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.12);
}

.document-icon i {
  font-size: 2rem;

  color: #dc2626;
}

.document-btn {
  background: #0d3b8e;

  color: #fff;

  text-decoration: none;

  padding: 10px 18px;

  border-radius: 8px;

  font-weight: 600;
}

/* ==========================
    Help Section
========================== */

.help-section {
  padding: 80px 0;
}

.help-card {
  background: #f8fafc;

  padding: 50px;

  border-radius: 20px;

  text-align: center;

  font-family: "DB Heavent", sans-serif;
}

/* ==========================
     display
========================== */
.grade-selection,
.document-list {
  display: none;
}

/* ==========================
    Active State
========================== */

.program-card.active {
  background: #0d3b8e;
  color: #fff;
}

.program-card.active i {
  color: #fff;
}

.document-btn.disabled {
  background: #999;
  pointer-events: none;
  cursor: not-allowed;
}

.empty-state {
  text-align: center;
  padding: 3rem 1rem;
}

.empty-state i {
  font-size: 3rem;
  margin-bottom: 1rem;
}

.empty-state h3 {
  margin-bottom: 0.5rem;
}

.empty-state p {
  opacity: 0.8;
}

/* Tablet */
@media (max-width: 992px) {
  .program-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .grade-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* Mobile */
@media (max-width: 576px) {
  .program-grid {
    grid-template-columns: 1fr;
  }

  .grade-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .document-grid {
    grid-template-columns: 1fr;
  }

  .document-card {
    flex-direction: column;

    text-align: center;
  }
}