body {
  margin: 0;
  padding: 0;
  font-family: 'Poppins', sans-serif;
  background: linear-gradient(135deg, #e8f4ff, #ffffff);
  color: #222;
  line-height: 1.7;
  overflow-x: hidden; /* prevent horizontal scrolling */
}

section, header, .cleanup-box {
  animation: fadeIn 0.8s ease forwards;
}

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

/* ------------------------- HERO + NAVBAR ------------------------- */
.hero-section {
  background-image: linear-gradient(rgba(0,0,0,0.45), rgba(0,0,0,0.45)),
                    url('background_photos/campus5.jpg');
  background-size: cover;
  background-position: center;
  height: 50vh;
  position: relative;
  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 { 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 {
  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: background 0.25s ease, color 0.25s ease;
}

.nav-links a:hover { background: rgba(255,255,255,0.33); }
.contact-btn { background-color: #014f6e; padding: 10px 22px; border-radius: 20px; font-weight: 700; }
.contact-btn:hover { background: #026488; box-shadow: 0 4px 12px rgba(0,0,0,0.25); }

/* HERO TITLE */
.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);
}

/* ------------------------- CLEANUP SECTION ------------------------- */
.cleanup-section {
  display: flex;
  justify-content: center;
  padding: 100px 20px;
}

.cleanup-box {
  width: 80%;
  max-width: 1100px;
  background: rgba(255,255,255,0.85);
  padding: 40px;
  border-radius: 18px;
  box-shadow: 0 12px 30px rgba(0,0,0,0.15);
  backdrop-filter: blur(6px);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

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

h1, h2 { color: #014f6e; font-weight: 700; }

/* ------------------------- FOOTER ------------------------- */
.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 1 300px;
  min-width: 280px;
  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: transform 0.3s ease, box-shadow 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; }

/* ------------------------- RESPONSIVE — TABLETS ------------------------- */
@media (max-width: 900px) {

  /* NAVBAR */
  .navbar { padding: 20px; position: relative; }
  .nav-links {
    display: none;
    position: absolute;
    top: 70px;
    right: 20px;
    width: 230px;
    flex-direction: column;
    background: rgba(0,0,0,0.88);
    padding: 20px;
    border-radius: 14px;
    gap: 18px;
    z-index: 99;
  }
  .nav-links.active { display: flex; }
  .hamburger { display: block; margin-left: auto; }

  /* HERO */
  .hero-section { height: 38vh; }
  .button-label {
    font-size: 3rem;
    position: static;
    margin-top: 50px;
    transform: none;
  }

  /* CLEANUP SECTION */
  .cleanup-section { padding: 60px 15px; }
  .cleanup-box { width: 100%; padding: 25px; }

  /* FOOTER */
  .bottom-container { flex-direction: column; width: 100%; }
  .bottom-box { width: 100%; padding: 25px; }
}

/* ------------------------- SMALL PHONES — 500px ------------------------- */
@media (max-width: 500px) {

  .button-label { font-size: 2.2rem; }
  .logo { width: 85px; }
  .logo-label { font-size: 1rem; line-height: 1.3rem; }
  .logo-label2 { font-size: 1.1rem; }

  h1, h2 { font-size: 1.2rem; }
  p { font-size: 1rem; }
}