* { box-sizing: border-box; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo", "Segoe UI", sans-serif;
  margin: 0;
  background: #f8fafc;
  color: #1f2937;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.login-card {
  background: #fff;
  padding: 32px 28px;
  border-radius: 8px;
  box-shadow: 0 4px 16px rgba(0,0,0,.08);
  width: 320px;
  max-width: calc(100% - 32px);
}

.login-card h1 {
  margin: 0 0 4px;
  font-size: 1.25rem;
  color: #1f2937;
}

.login-card .subtitle {
  margin: 0 0 20px;
  color: #6b7280;
  font-size: 13px;
}

.login-card form {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.login-card input[type=password] {
  padding: 10px 12px;
  border: 1px solid #d1d5db;
  border-radius: 4px;
  font-size: 15px;
}

.login-card input[type=password]:focus {
  outline: 2px solid #2563eb;
  outline-offset: -2px;
  border-color: transparent;
}

.login-card button {
  background: #2563eb;
  color: #fff;
  border: 0;
  padding: 10px 16px;
  border-radius: 4px;
  font-size: 15px;
  cursor: pointer;
}

.login-card button:hover { background: #1d4ed8; }

.login-card .error {
  background: #fef2f2;
  color: #b91c1c;
  border: 1px solid #fecaca;
  padding: 8px 12px;
  border-radius: 4px;
  font-size: 13px;
  margin-bottom: 12px;
}

.login-card .notice {
  background: #fffbeb;
  color: #92400e;
  border: 1px solid #fde68a;
  padding: 8px 12px;
  border-radius: 4px;
  font-size: 13px;
  margin-bottom: 12px;
}