html,
body {
  margin: 0;
  padding: 0;
  min-height: 100%;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, Ubuntu, sans-serif;
  background: radial-gradient(circle at top, #13202c, #080c11 65%);
  color: #f0f4f8;
}

.login-page {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 70vh;
  padding: 24px;
}

.login-card {
  width: min(400px, 100%);
  background: rgba(9, 16, 23, 0.88);
  border: 1px solid rgba(46, 77, 110, 0.4);
  border-radius: 18px;
  padding: 32px;
  box-shadow: 0 20px 45px rgba(0, 0, 0, 0.35);
}

.login-card h1 {
  margin: 0;
  font-size: 24px;
  letter-spacing: 0.04em;
  color: #cde0ff;
}

.login-card p {
  margin: 8px 0 24px;
  color: #8fa3bb;
}

.field {
  display: flex;
  flex-direction: column;
  margin-bottom: 18px;
  gap: 6px;
}

.field span {
  font-size: 14px;
  font-weight: 600;
  color: #a6c0de;
}

.field input {
  padding: 12px;
  border-radius: 10px;
  border: 1px solid rgba(62, 94, 128, 0.65);
  background: rgba(13, 21, 31, 0.92);
  color: #f0f4f8;
  font-size: 15px;
}

.field input:focus {
  outline: none;
  border-color: #4c8dff;
  box-shadow: 0 0 0 3px rgba(76, 141, 255, 0.25);
}

button[type='submit'] {
  width: 100%;
  padding: 12px;
  border-radius: 12px;
  border: 0;
  font-size: 16px;
  font-weight: 600;
  background: linear-gradient(135deg, #2563eb, #1d4ed8);
  color: #f9fbff;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

button[type='submit']:hover:not([disabled]) {
  transform: translateY(-1px);
  box-shadow: 0 12px 24px rgba(37, 99, 235, 0.35);
}

button[type='submit'][disabled] {
  opacity: 0.55;
  cursor: wait;
}

.error {
  margin: 0 0 18px;
  padding: 10px 12px;
  border-radius: 10px;
  background: rgba(220, 38, 38, 0.15);
  color: #fca5a5;
  border: 1px solid rgba(220, 38, 38, 0.35);
  font-size: 14px;
}

@media (max-width: 480px) {
  .login-card {
    padding: 24px 20px;
  }
}