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

body {
  font-family: 'Segoe UI', sans-serif;
  background: #0f1624;
  color: #fff;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.container {
  background: #111b27;
  padding: 20px;
  border-radius: 12px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.3);
  width: 90%;
  max-width: 600px;
  text-align: center;
}

h1 {
  margin-bottom: 15px;
  color: #00c3ff;
  font-size: 24px;
}

p {
  color: #aaa;
  margin-bottom: 20px;
  font-size: 14px;
}

input {
  width: 100%;
  padding: 12px;
  margin: 10px 0;
  border: none;
  border-radius: 6px;
  background: #1e2a38;
  color: #fff;
  font-size: 16px;
}

input::placeholder {
  color: #888;
}

button {
  background: #00c3ff;
  color: white;
  border: none;
  padding: 12px 20px;
  font-size: 16px;
  border-radius: 6px;
  cursor: pointer;
  width: 100%;
  margin-top: 10px;
}

button:hover {
  background: #00a8d4;
}

header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 30px;
  border-bottom: 1px solid #333;
  padding-bottom: 10px;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 20px;
}

table th, table td {
  padding: 12px;
  text-align: left;
  border-bottom: 1px solid #333;
}

table th {
  background: #1e2a38;
}

footer {
  margin-top: 30px;
  font-size: 14px;
  color: #aaa;
}

@media (max-width: 480px) {
  .container {
    padding: 15px;
  }
  h1 {
    font-size: 20px;
  }
  input, button {
    font-size: 14px;
    padding: 10px;
  }
}