/* Reset */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Segoe UI", "SolaimanLipi", Arial, sans-serif;
}

body {
  background: linear-gradient(135deg, #16a085, #2980b9);
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  flex-direction: column;
}

/* Container Box */
.container {
  background: rgba(255, 255, 255, 0.12);
  padding: 40px;
  border-radius: 20px;
  text-align: center;
  box-shadow: 0 12px 30px rgba(0,0,0,0.25);
  width: 750px;
  max-width: 95%;
  backdrop-filter: blur(12px);
  border: 1px solid rgba(255,255,255,0.25);
  animation: fadeIn 1s ease-in-out;
}

/* Logo */
.logo img {
  width: 180px;
  margin-bottom: 15px;
}

/* Title */
.title {
  font-size: 28px;
  color: #fff;
  margin-bottom: 8px;
}
.subtitle {
  color: #f0f0f0;
  margin-bottom: 25px;
  font-size: 16px;
}

/* Section Title */
.section-title {
  margin: 20px 0 15px 0;
  font-size: 22px;
  color: #fff;
  font-weight: 600;
}

/* Button Group */
.button-group {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 15px;
  margin-bottom: 25px;
}

.button-group a {
  background: linear-gradient(135deg, #1abc9c, #16a085);
  color: white;
  padding: 12px 24px;
  border-radius: 10px;
  font-size: 15px;
  text-decoration: none;
  box-shadow: 0 4px 12px rgba(0,0,0,0.25);
  transition: all 0.3s ease;
}
.button-group a:hover {
  transform: translateY(-3px) scale(1.05);
  background: linear-gradient(135deg, #16a085, #1abc9c);
  box-shadow: 0 6px 18px rgba(0,0,0,0.35);
}

/* WhatsApp Floating Button */
.whatsapp-float {
  position: fixed;
  width: 60px;
  height: 60px;
  bottom: 25px;
  right: 25px;
  background: #25d366;
  border-radius: 50%;
  box-shadow: 0 4px 12px rgba(0,0,0,0.25);
  display: flex;
  justify-content: center;
  align-items: center;
  transition: 0.3s;
  z-index: 1000;
}
.whatsapp-float img {
  width: 35px;
  height: 35px;
}
.whatsapp-float:hover {
  transform: scale(1.1);
  background: #20ba5a;
}

/* Footer */
footer {
  margin-top: 30px;
  padding: 12px;
  width: 100%;
  background: rgba(0,0,0,0.6);
  color: white;
  text-align: center;
  font-size: 14px;
  border-top: 1px solid rgba(255,255,255,0.2);
}

/* Animation */
@keyframes fadeIn {
  from