* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

body {
  background-color: #ffffff;
  color: #000000;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.auth-card {
  width: 100%;
  max-width: 400px;
  border: 2px solid #000000;
  border-radius: 12px;
  padding: 32px;
  background-color: #ffffff;
}

.logo {
  font-size: 22px;
  font-weight: 800;
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 20px;
}

.auth-card h2 {
  font-size: 22px;
  font-weight: 800;
  margin-bottom: 20px;
}

.form-group {
  margin-bottom: 16px;
}

.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 700;
  margin-bottom: 6px;
}

.form-group input {
  width: 100%;
  padding: 10px 14px;
  border: 2px solid #000000;
  border-radius: 8px;
  font-size: 14px;
  outline: none;
}

.form-group input:focus {
  border-color: #2563eb;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 20px;
  border-radius: 8px;
  border: 2px solid #000000;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  background-color: #ffffff;
  color: #000000;
  transition: background-color 0.25s ease, color 0.25s ease;
}

.btn-full {
  width: 100%;
  margin-top: 8px;
}

.btn:hover {
  background-color: #000000;
  color: #ffffff;
}

.alert-error {
  padding: 10px 12px;
  border: 1.5px solid #ef4444;
  background-color: #fef2f2;
  color: #991b1b;
  border-radius: 6px;
  font-size: 13px;
  margin-bottom: 16px;
  font-weight: 500;
}

.switch-mode {
  margin-top: 20px;
  font-size: 13px;
  text-align: center;
}

.switch-mode a {
  color: #2563eb;
  font-weight: 700;
  text-decoration: none;
  margin-left: 4px;
}