.auth-body {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  height: 100dvb;
  background: linear-gradient(135deg, #1a1a1a 0%, #000 100%);
  padding: 20px;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
}

.auth-card {
  background: var(--panel);
  padding: 40px 30px;
  border-radius: 20px;
  width: 100%;
  max-width: 400px;
  display: flex;
  flex-direction: column;
  gap: 18px;
  box-shadow: 0 20px 40px rgba(0,0,0,0.5);
  border: 1px solid var(--border);
  margin: auto;
}

.auth-card h1 {
  text-align: center;
  color: var(--accent);
  font-size: clamp(28px, 8vw, 32px);
  margin-bottom: 6px;
}

/* ✅ форма: нормальные расстояния */
.auth-card form{
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.auth-card input {
  width: 100%;
  padding: 14px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: #111;
  color: white;
  font-size: 16px;
  outline: none;
  margin: 0;
}

.auth-card input:focus {
  border-color: var(--accent);
}

.auth-card button {
  width: 100%;
  padding: 14px;
  border: none;
  border-radius: 10px;
  background: var(--accent);
  color: white;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  margin-top: 4px;
}

.switch {
  text-align: center;
  color: #888;
  font-size: 14px;
}

.switch span {
  color: var(--accent);
  cursor: pointer;
  font-weight: 500;
}

#msg {
  color: #f44;
  text-align: center;
  font-size: 14px;
  min-height: 20px;
}

#login_error, #reg_error{
  margin-top: 8px;
  min-height: 18px;
}

/* ✅ чуть компактнее на маленьких экранах */
@media (max-width: 420px) {
  .auth-card {
    padding: 28px 18px;
    border-radius: 18px;
    gap: 16px;
  }
  .auth-card form {
    gap: 14px;
  }
}