body {
  margin: 0;
  padding: 0;
  height: 100vh;
  
  justify-content: center;
  align-items: center;
  background: #f2f2f2; /* optional: light background */
}

.container {
  max-width: 400px;
  width: 100%;
  margin: 50px auto;
  padding: 20px;
  
  border-radius: 8px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.05);
}

h2 {
  margin-bottom: 15px;
  text-align: center;
}

.form-row {
  margin-bottom: 10px;
}

input {
  width: 100%;
  padding: 8px 12px;
  border-radius: 6px;
  border: 1px solid #ccc;
}

button {
  width: 100%;
  padding: 10px;
  background: #2d8cff;
  color: #fff;
  border: none;
  border-radius: 6px;
  cursor: pointer;
}

button:hover {
  opacity: 0.9;
}

.flash {
  padding: 10px;
  background: #ffcccc;
  color: #900;
  border-radius: 6px;
  margin-bottom: 10px;
  text-align: center;
}

.header {
  margin-bottom: 20px;
  text-align: center;
}

.header h1 {
  margin: 0;
  font-size: 1.8em;
}

.header div a, .header div span {
  margin-left: 10px;
  color: #555;
  text-decoration: none;
}

.header div a:hover {
  color: #2d8cff;
}


:root {
    --bg: #f5f7fb;
    --card: #ffffff;
    --primary: #2d8cff;
    --muted: #7b8a93;
    --vip: #ffd966;
    --danger: #ff4d4f;
    --border-radius: 10px;
    --shadow: 0 6px 12px rgba(0,0,0,0.08);
    --font: 'Inter', 'Segoe UI', Roboto, sans-serif;
}