* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Poppins', sans-serif;
}

body {
  background: #0b1220;
  background-image:
    radial-gradient(circle at top, #1d4ed8 0%, transparent 40%),
    radial-gradient(circle at bottom, #06b6d4 0%, transparent 35%);
  color: #fff;
  min-height: 100vh;
}

.container {
  width: 100%;
  max-width: 700px;
  margin: auto;
  padding: 20px;
}

.header {
  text-align: center;
  margin: 30px 0;
}

.header h1 {
  font-size: 34px;
  color: #00e5ff;
  text-shadow: 0 0 15px #00e5ff;
}

.header p {
  color: #9ca3af;
  margin-top: 8px;
}

.card {
  background: rgba(17, 24, 39, .8);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(0, 229, 255, .2);
  border-radius: 18px;
  padding: 20px;
  margin-bottom: 20px;
  box-shadow: 0 0 20px rgba(0, 229, 255, .15);
}

.card h2 {
  margin-bottom: 15px;
  color: #00e5ff;
}

#saldo {
  margin: 15px 0;
  color: #22c55e;
  font-size: 34px;
  text-align: center;
}

input,
select {
  width: 100%;
  padding: 14px;
  margin-top: 10px;
  margin-bottom: 15px;
  border: none;
  border-radius: 12px;
  background: #1f2937;
  color: #fff;
  outline: none;
  font-size: 15px;
  transition: .3s;
}

input:focus,
select:focus {
  border: 1px solid #00e5ff;
  box-shadow: 0 0 12px #00e5ff;
}

button {
  width: 100%;
  padding: 14px;
  border: none;
  border-radius: 12px;
  background: linear-gradient(90deg, #06b6d4, #2563eb);
  color: #fff;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: .3s;
}

button:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 18px #06b6d4;
}

button:active {
  transform: scale(.98);
}

#depositResult,
#history {
  margin-top: 18px;
  padding: 15px;
  border-radius: 12px;
  background: #111827;
  border: 1px solid rgba(255, 255, 255, .08);
  word-break: break-word;
  overflow: auto;
}

img {
  max-width: 100%;
  border-radius: 12px;
}

table {
  width: 100%;
  border-collapse: collapse;
}

table th,
table td {
  padding: 10px;
  text-align: left;
  border-bottom: 1px solid rgba(255, 255, 255, .08);
}

::-webkit-scrollbar {
  width: 6px;
}

::-webkit-scrollbar-thumb {
  background: #06b6d4;
  border-radius: 20px;
}

@media(max-width:600px) {
  
  .header h1 {
    font-size: 28px;
  }
  
  .card {
    padding: 16px;
  }
  
  button {
    font-size: 15px;
  }
  
  #saldo {
    font-size: 28px;
  }
  
}