body {
  margin: 0;
  padding: 0;
  font-family: 'Poppins', sans-serif;
  background: linear-gradient(135deg, #f5f8ff, #e0f0ff);
  color: #222;
  line-height: 1.7;
}

/* fade-in animation */
section, header, .lesson-box {
  animation: fadeIn 0.8s ease forwards;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}



.hero-section {
  background-image: linear-gradient(rgba(0, 0, 0, 0.45), rgba(0, 0, 0, 0.45)), 
                    url('background_photos/campus6.jpg');
  background-size: cover;
  background-position: center;
  height: 50vh;
  position: relative;
  font-family: Poppins;
  box-shadow: 0 8px 25px rgba(0,0,0,0.25);
}


.navbar {
  display: flex;
  align-items: center;
  padding: 20px 50px;
  gap: 20px;
}

.hamburger {
  display: none;
  font-size: 2rem;
  color: white;
  cursor: pointer;
}

/* LOGO GROUP */
.logo-group {
  display: flex;
  align-items: center;
  gap: 15px;
}

.logo {
  width: 110px;
}

.logo-label {
  font-size: 1.3rem;
  font-weight: 700;
  color: white;
  line-height: 1.4rem;
}

.logo-label2 {
  font-size: 1.5rem;
  font-weight: 800;
}

/* NAV LINKS */
.nav-links {
  list-style: none;
  display: flex;
  gap: 25px;
  margin-left: auto;
}

.nav-links a {
  text-decoration: none;
  color: white;
  font-weight: 600;
  padding: 8px 14px;
  border-radius: 6px;
  transition: 0.3s ease;
}

.nav-links a:hover {
  background: rgba(255, 255, 255, 0.25);
}

/* CONTACT BUTTON */
.contact-btn {
  background-color: #014f6e;
  padding: 10px 22px;
  border-radius: 20px;
  font-weight: 700;
  transition: 0.3s ease;
}

.contact-btn:hover {
  background: rgba(255,255,255,0.4);
}


.button-label {
  position: absolute;
  top: 65%;
  left: 50%;
  transform: translate(-50%, -50%);
  color: white;
  font-size: 5rem;
  font-weight: 700;
  text-align: center;
  text-shadow: 0 8px 25px rgba(0,0,0,0.55);
}


/* LESSON SECTION */

.lesson-section {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  padding: 100px 20px;
  gap: 30px;
  background: linear-gradient(to right, #e73d51ff, #014f6eff);
}

.lesson-container {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 30px;
  width: 80%;
  max-width: 1200px;
}

/* GLASS CARD STYLE */
.lesson-box {
  flex: 1;
  min-width: 300px;
  background: rgba(255,255,255,0.85);
  padding: 30px;
  border-radius: 22px;
  box-shadow: 0 12px 30px rgba(0,0,0,0.15);
  backdrop-filter: blur(6px);
  transition: 0.3s ease;
}

.lesson-box:hover {
  transform: translateY(-6px);
  box-shadow: 0 18px 40px rgba(0,0,0,0.22);
}

/* LESSON IMAGE */
.lesson-image {
  width: 100%;
  max-width: 500px;
  border-radius: 16px;
  object-fit: cover;
  box-shadow: 0 10px 25px rgba(0,0,0,0.25);
  transition: 0.3s ease;
}

.lesson-image:hover {
  transform: scale(1.03);
}


/* LESSON 2 (TEXT LESSON) */
.lesson2-section {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  padding: 60px 20px 100px;
  gap: 30px;
}

.lesson2-section p {
  background: rgba(255,255,255,0.85);
  padding: 30px;
  border-radius: 22px;
  box-shadow: 0 12px 30px rgba(0,0,0,0.15);
  backdrop-filter: blur(6px);
  font-size: 1.1rem;
  line-height: 1.8;
  color: #222;
  max-width: 900px;
  margin: auto;
}

.lesson2-section b {
  font-size: 1.3rem;
  color: #014f6e;
}


/* ============================
   FOOTER (BOTTOM SECTION)
   ============================ */
.bottom-section {
  display: flex;
  justify-content: center;
  padding: 60px 20px;
}

.bottom-container {
  display: flex;
  gap: 40px;
  flex-wrap: wrap;
  width: 85%;
  max-width: 1100px;
}

.bottom-box {
  flex: 1;
  min-width: 300px;
  background: rgba(255,255,255,0.85);
  padding: 35px;
  border-radius: 18px;
  text-align: left;
  box-shadow: 0 10px 25px rgba(0,0,0,0.15);
  backdrop-filter: blur(6px);
  transition: 0.3s ease;
}

.bottom-box:hover {
  transform: translateY(-6px);
  box-shadow: 0 16px 38px rgba(0,0,0,0.24);
}

.bottom-box h2 {
  margin-bottom: 10px;
  color: #014f6e;
}




/* LESSON STEPS */
.lesson-step {
  display: flex;
  gap: 20px;
  margin-bottom: 40px;
  background: rgba(255,255,255,0.85);
  padding: 25px;
  border-radius: 20px;
  box-shadow: 0 12px 30px rgba(0,0,0,0.15);
  backdrop-filter: blur(6px);
  transition: transform 0.3s, box-shadow 0.3s;
}

.lesson-step:hover {
  transform: translateY(-6px);
  box-shadow: 0 18px 40px rgba(0,0,0,0.22);
}

.step-number {
  font-size: 2rem;
  font-weight: 700;
  color: #e73d51ff;
  flex-shrink: 0;
  width: 50px;
  height: 50px;
  background: #014f6eff;
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.step-content h3 {
  margin-top: 0;
  margin-bottom: 10px;
  color: #014f6eff;
}

.step-content p {
  margin: 0;
  font-size: 1.1rem;
  line-height: 1.6;
}

/* RESPONSIVE */
@media (max-width: 900px) {
  .lesson-step {
    flex-direction: column;
    align-items: flex-start;
  }
  .step-number {
    margin-bottom: 15px;
  }
}