style.css

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background: linear-gradient(135deg, #F3F4F9, #C9D6E3);
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  color: #333;
  position: relative;
}

.container {
  background: #ffffff;
  border-radius: 20px;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.15);
  padding: 40px;
  width: 450px;
  text-align: center;
  position: relative;
  max-width: 500px; /* Lebar maksimal di desktop */
}

h1 {
  font-size: 30px;
  margin-bottom: 25px;
  color: #2D3A3A;
  font-weight: 700;
}

input, select {
  padding: 15px;
  margin: 12px 0;
  width: 100%;
  font-size: 18px;
  border-radius: 10px;
  border: 1px solid #D1D1D1;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.05);
  transition: all 0.3s ease;
}

input:focus, select:focus {
  border: 1px solid #4CAF50;
  outline: none;
  box-shadow: 0 0 8px rgba(0, 180, 50, 0.2);
}

.currency-selectors {
  display: flex;
  justify-content: space-between;
  gap: 15px;
}

span {
  font-size: 20px;
  font-weight: 600;
  color: #555;
}

button {
  padding: 15px 25px;
  background-color: #4CAF50;
  color: white;
  border: none;
  border-radius: 10px;
  width: 100%;
  font-size: 20px;
  font-weight: 600;
  cursor: pointer;
  transition: background-color 0.3s ease, transform 0.2s;
}

button:hover {
  background-color: #45a049;
  transform: translateY(-2px); /* Efek hover tombol */
}

button:active {
  transform: translateY(0); /* Efek tombol ketika ditekan */
}

#result {
  margin-top: 30px;
  font-size: 24px;
  font-weight: bold;
  color: #333;
  text-transform: uppercase;
}

/* Watermark dengan Copyright */
body::after {
  content: "© 2025 Powered by Teggar";
  font-size: 16px;
  font-weight: 400;
  color: rgba(0, 0, 0, 0.2);
  position: absolute;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  z-index: -1;
  opacity: 0.5;
  pointer-events: none;
  user-select: none;
  letter-spacing: 2px;
  text-transform: uppercase;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

/* Media Query untuk Layar Lebih Kecil */
@media (max-width: 768px) {
  .container {
    padding: 30px;
    width: 100%;
    max-width: 100%;
  }

  h1 {
    font-size: 24px;
  }

  input, select {
    font-size: 16px;
  }

  button {
    font-size: 18px;
  }
}