:root {
  --bg: #e8f5e9;
  --card: #ffffff;
  --primary: #2e7d32;
  --primary-hover: #1b5e20;
  --text: #1b4332;
  --muted: #6b7280;
  --shadow: 0 8px 24px rgba(0,0,0,.15);
}

body {
  margin: 0;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background: linear-gradient(135deg, #a8e6cf, #dcedc1);
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
}

.card {
  background: var(--card);
  padding: 40px 30px;
  border-radius: 16px;
  box-shadow: var(--shadow);
  width: 100%;
  max-width: 420px;
  text-align: center;
}

h1 {
  margin-bottom: 8px;
  color: var(--primary);
}

p {
  color: var(--muted);
  margin-bottom: 24px;
}

label {
  display: block;
  margin: 12px 0 6px;
  font-weight: 600;
  text-align: left;
  color: var(--text);
}

input {
  width: 100%;
  padding: 12px;
  border-radius: 8px;
  border: 1px solid #cbd5e1;
  margin-bottom: 16px;
  font-size: 15px;
}

input:focus {
  border-color: var(--primary);
  outline: none;
  box-shadow: 0 0 0 2px rgba(46,125,50,0.2);
}

button, .btn {
  display: inline-block;
  width: 100%;
  padding: 12px;
  border: none;
  border-radius: 8px;
  background: var(--primary);
  color: white;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s ease;
}

button:hover, .btn:hover {
  background: var(--primary-hover);
}

.actions {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 16px;
}

.actions .btn {
  width: auto;
  padding: 10px 16px;
  font-size: 14px;
}

.small {
  font-size: 14px;
  color: var(--muted);
  margin: 16px 0 8px;
}

.alert {
  background: #c8e6c9;
  padding: 12px;
  border-radius: 8px;
  margin-bottom: 16px;
  text-align