:root {
  --bg: #0a0e1a;
  --card: #111827;
  --border: #1f2d45;
  --orange: #f97316;
  --teal: #06b6d4;
  --text: #e2e8f0;
  --muted: #64748b;
  --danger: #ef4444;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, 'Segoe UI', sans-serif;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}
.auth-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 28px;
  width: 100%;
  max-width: 400px;
}
.auth-title {
  font-size: 22px;
  font-weight: 800;
  color: var(--orange);
  margin-bottom: 6px;
}
.auth-sub { font-size: 13px; color: var(--muted); margin-bottom: 20px; }
.auth-field { margin-bottom: 14px; }
.auth-field label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  color: var(--muted);
  margin-bottom: 6px;
}
.auth-field input {
  width: 100%;
  padding: 10px 12px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: #0f172a;
  color: var(--text);
  font-size: 15px;
}
.auth-field input:focus {
  outline: none;
  border-color: var(--teal);
}
.btn {
  display: inline-block;
  padding: 10px 18px;
  border: none;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  width: 100%;
  margin-top: 8px;
}
.btn-primary { background: var(--orange); color: #fff; }
.btn-primary:hover { filter: brightness(1.08); }
.auth-error {
  background: rgba(239, 68, 68, 0.12);
  border: 1px solid var(--danger);
  color: #fecaca;
  padding: 10px 12px;
  border-radius: 8px;
  font-size: 13px;
  margin-bottom: 16px;
}
.auth-links {
  margin-top: 18px;
  font-size: 13px;
  color: var(--muted);
  text-align: center;
}
.auth-links a { color: var(--teal); text-decoration: none; }
.auth-links a:hover { text-decoration: underline; }