body {
  margin: 0;
  min-height: 100svh;
  display: flex;
  justify-content: center;
  align-items: center;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto;
  background: #f5f7fa;
}

.login-card {
  background: white;
  padding: 45px;
  border-radius: 20px;
  width: 100%;
  max-width: 400px;
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.08);
}

@media (max-width: 600px) {
  .login-card {
    margin: 20px;
    padding: 35px;
  }
}

.login-title {
  text-align: center;
  margin-bottom: 35px;
}

.login-title h2 {
  font-weight: 700;
  margin-bottom: 6px;
}

.login-title small {
  color: #666;
}

.form-control {
  border-radius: 12px;
  padding: 12px;
}

.password-wrapper {
  position: relative;
}

.password-toggle-btn {
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  border: none;
  background: transparent;
  cursor: pointer;
  font-size: 1.2rem;
  user-select: none;
}

.btn-login {
  background: #1f8f4e;
  color: white;
  font-weight: 600;
  border-radius: 12px;
  padding: 12px;
}

.btn-login:hover {
  background: #166c39;
}

.alert {
  font-size: 0.9rem;
}

.footer {
  position: fixed;
  bottom: 10px;
  left: 0;
  width: 100%;
  text-align: center;
  font-size: 0.8rem;
  color: #888;
}

[data-bs-theme="dark"] body {
  background: #0b1220;
  color: #e5e7eb;
}

[data-bs-theme="dark"] .login-card {
  background: #111827;
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.35);
  border: 1px solid #1f2937;
}

[data-bs-theme="dark"] .login-title small {
  color: #94a3b8;
}

[data-bs-theme="dark"] .form-control {
  background: #0f172a;
  color: #e5e7eb;
  border-color: #334155;
}

[data-bs-theme="dark"] .form-control::placeholder {
  color: #94a3b8;
}

[data-bs-theme="dark"] .footer {
  color: #94a3b8;
}