.login-overlay {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  background: rgba(15, 23, 42, 0.72);
  z-index: 100;
}

.login-card {
  width: 100%;
  max-width: 420px;
  background: #131a2a;
  padding: 2rem;
  border-radius: 12px;
  box-shadow: 0 18px 40px rgba(15, 23, 42, 0.35);
  border: 1px solid rgba(148, 163, 184, 0.2);
  font-family: 'Inter', 'Segoe UI', sans-serif;
  line-height: 1.2;
}

.login-title {
  margin: 0 0 1rem;
  color: #e2e8f0;
  line-height: 1.2;
}

.login-form {
  display: grid;
  gap: 1rem;
  margin: 0;
}

.login-field {
  display: grid;
  gap: 0.35rem;
  margin: 0;
}

.login-field label {
  display: block;
  margin: 0;
  font-weight: 600;
  color: #94a3b8;
  line-height: 1.2;
}

.login-input,
.login-submit {
  width: 100%;
  height: 44px;
  font: inherit;
  margin: 0;
  min-width: 0;
  box-sizing: border-box;
}

.login-input {
  padding: 0 0.75rem;
  border-radius: 8px;
  border: 1px solid rgba(148, 163, 184, 0.2);
  background: #111827;
  color: #e2e8f0;
  transition: border-color 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.login-input::placeholder {
  color: #94a3b8;
}

.login-input:focus {
  outline: none;
  border-color: #2563eb;
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.2);
}

.login-submit {
  cursor: pointer;
  border-radius: 8px;
  border: none;
  padding: 0 1rem;
  font-weight: 600;
  color: #fff;
  background: #2563eb;
  transition: transform 0.15s ease, background 0.15s ease;
}

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

.login-message {
  display: none;
  padding: 0.4rem 0.75rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.9rem;
  margin-top: 0.75rem;
  background: rgba(239, 68, 68, 0.15);
  color: #ef4444;
}

.login-message.is-visible,
.login-message:not(:empty) {
  display: block;
}

.login-message.flash-success {
  background: rgba(34, 197, 94, 0.12);
  color: #22c55e;
}

.login-message.flash-warning {
  background: rgba(245, 158, 11, 0.18);
  color: #f59e0b;
}

.login-message.flash-error {
  background: rgba(239, 68, 68, 0.15);
  color: #ef4444;
}

.login-switch-link {
  display: inline-flex;
  align-items: center;
  margin-top: 0.85rem;
  color: #93c5fd;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
}

.login-switch-link:hover {
  color: #bfdbfe;
}