:root {
  color-scheme: dark;
  --bg: #07111f;
  --panel: rgba(10, 22, 41, 0.9);
  --line: rgba(154, 180, 220, 0.2);
  --text: #eef4ff;
  --muted: #94a6c4;
  --accent: #6ee7ff;
  --danger: #ff9c9c;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.38);
  font-family: Inter, "Segoe UI", system-ui, sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(59, 169, 255, 0.18), transparent 24%),
    radial-gradient(circle at bottom right, rgba(110, 231, 255, 0.1), transparent 28%),
    linear-gradient(180deg, #06101d 0%, #09172c 100%);
}

body,
input,
button {
  font: inherit;
}

.auth-shell {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
}

.auth-card {
  width: min(440px, 100%);
  padding: 32px;
  border: 1px solid var(--line);
  border-radius: 24px;
  background: var(--panel);
  box-shadow: var(--shadow);
  backdrop-filter: blur(20px);
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 12px;
}

h1 {
  margin: 0;
  font-size: 32px;
}

.auth-copy {
  margin: 12px 0 0;
  color: var(--muted);
  line-height: 1.7;
}

.auth-error {
  margin-top: 18px;
  padding: 12px 14px;
  border-radius: 14px;
  border: 1px solid rgba(255, 156, 156, 0.2);
  background: rgba(255, 156, 156, 0.08);
  color: var(--danger);
}

.auth-form {
  display: grid;
  gap: 10px;
  margin-top: 22px;
}

.auth-form label {
  color: var(--muted);
  font-size: 14px;
}

.auth-form input,
.auth-form button {
  border: 1px solid var(--line);
  border-radius: 14px;
}

.auth-form input {
  padding: 13px 14px;
  color: var(--text);
  background: rgba(14, 28, 50, 0.9);
}

.auth-form button {
  margin-top: 6px;
  padding: 12px 14px;
  color: #07213c;
  font-weight: 700;
  cursor: pointer;
  background: linear-gradient(135deg, var(--accent), #89f0ff);
}

.hidden {
  display: none;
}

@media (max-width: 640px) {
  .auth-card {
    padding: 24px;
  }

  h1 {
    font-size: 26px;
  }
}