/* ===== Global Reset ===== */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

/* ===== Body & Layout ===== */
body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background-color: #0e0e0e;
  color: #e0e0e0;
  line-height: 1.6;
  min-height: 100vh;
}

/* ===== Header Banner ===== */
header {
  background-color: #121212;
  border-bottom: 2px solid #00ffc3;
  padding: 1.5rem 0;
  text-align: center;
  box-shadow: 0 2px 10px rgba(0, 255, 195, 0.2);
}

header h1 {
  font-size: 2.5rem;
  color: #00ffc3;
  margin-bottom: 0.25rem;
}

header p {
  font-size: 1.1rem;
  color: #cccccc;
}

/* ===== Container Layout ===== */
.container {
  max-width: 800px;
  margin: auto;
  padding: 2rem;
  text-align: center;
}

/* ===== Buttons ===== */
.button-group {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-top: 2rem;
}

.button {
  background-color: #00ffc3;
  color: #000;
  padding: 0.8rem 1.5rem;
  border: none;
  border-radius: 8px;
  font-weight: bold;
  font-size: 1rem;
  text-decoration: none;
  transition: all 0.3s ease;
  box-shadow: 0 0 10px #00ffc3aa;
}

.button:hover {
  background-color: #00c2a8;
  box-shadow: 0 0 15px #00ffc3;
}

/* ===== Footer ===== */
footer {
  background-color: #121212;
  text-align: center;
  padding: 1rem;
  font-size: 0.9rem;
  color: #777;
  border-top: 1px solid #222;
  margin-top: 3rem;
}