*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #111;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  color: #ddd;
}

#login-card {
  background: #1e1e2e;
  border: 1px solid #333;
  border-radius: 12px;
  padding: 40px 36px;
  width: 360px;
  max-width: 95vw;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

h1 {
  font-size: 22px;
  color: #fff;
  text-align: center;
}

.subtitle {
  text-align: center;
  font-size: 13px;
  color: #777;
  margin-top: -12px;
}

#login-form {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.field label {
  font-size: 12px;
  color: #aaa;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.field input {
  padding: 10px 12px;
  background: #2a2a3e;
  border: 1px solid #444;
  border-radius: 6px;
  color: #fff;
  font-size: 15px;
}

.field input:focus {
  outline: none;
  border-color: #5a8dee;
}

#error-msg {
  background: #3a1a1a;
  border: 1px solid #7a3a3a;
  color: #ffaaaa;
  padding: 9px 12px;
  border-radius: 6px;
  font-size: 13px;
}

#error-msg.hidden { display: none; }

#btn-login {
  padding: 11px;
  background: #2d6a4f;
  border: 1px solid #4a9e7a;
  border-radius: 6px;
  color: #aeffd6;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  margin-top: 4px;
}

#btn-login:hover { background: #3d8a6a; }
#btn-login:disabled { opacity: 0.6; cursor: not-allowed; }