:root {
  --bg-color: #ffffff;
  --text-color: #000000;
  --background-image: url('https://files.catbox.moe/z87cm9.jpg');
}

body.dark {
  --bg-color: #121212;
  --text-color: #ffffff;
  --background-image: url('https://files.catbox.moe/9r7gmu.jpg');
}

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

body {
  font-family: 'Poppins', sans-serif;
  background-color: var(--bg-color);
  background-image: var(--background-image);
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  color: var(--text-color);
  height: 100vh;
  width: 100vw;
  transition: background-color 0.5s ease, background-image 0.8s ease, color 0.5s ease;
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
  overflow: hidden;
}

/* Tombol toggle mode */
#toggleMode {
  position: fixed;
  top: 20px;
  right: 20px;
  padding: 10px 15px;
  font-size: 20px;
  background: var(--text-color);
  color: var(--bg-color);
  border: none;
  border-radius: 12px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
  cursor: pointer;
  transition: transform 0.3s ease, background 0.3s ease, color 0.3s ease;
  z-index: 999;
}

#toggleMode:hover {
  transform: scale(1.1);
}

/* Kontainer tengah */
.container {
  text-align: center;
  background: rgba(255, 255, 255, 0.15);
  padding: 2rem 3rem;
  border-radius: 20px;
  backdrop-filter: blur(14px);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.25);
  transition: all 0.4s ease;
}

/* Tombol Get Code */
.get-code {
  margin-top: 1.5rem;
  padding: 12px 28px;
  font-size: 16px;
  font-weight: bold;
  background: var(--text-color);
  color: var(--bg-color);
  border: none;
  border-radius: 10px;
  cursor: pointer;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.2);
  transition: all 0.3s ease;
}

.get-code:hover {
  transform: scale(1.07);
  opacity: 0.95;
}