:root { color-scheme: dark; }
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Inter", "Segoe UI", sans-serif;
  background: #09090b;
  color: #e4e4e7;
  min-height: 100vh;
  display: flex; align-items: center; justify-content: center;
}
.container {
  max-width: 24rem;
  width: 100%;
  padding: 2.5rem 2rem;
  background: #18181b;
  border: 1px solid #27272a;
  border-radius: 12px;
  border-top: 4px solid #3b82f6;
}
.header { text-align: center; margin-bottom: 1.5rem; }
.logo {
  display: inline-block;
  background: #3b82f6;
  color: #fff;
  font-weight: 700;
  font-size: 1.5rem;
  padding: 0.5rem 1rem;
  border-radius: 8px;
  margin-bottom: 0.75rem;
}
h1 { margin: 0; font-size: 1.25rem; font-weight: 600; }
.subtitle { margin: 0.25rem 0 0; color: #a1a1aa; font-size: 0.875rem; }
.error {
  background: rgba(127, 29, 29, 0.4);
  border: 1px solid #7f1d1d;
  color: #fca5a5;
  padding: 0.5rem 0.75rem;
  border-radius: 8px;
  margin-bottom: 1rem;
  font-size: 0.875rem;
}
form { display: flex; flex-direction: column; gap: 0.5rem; }
label { font-size: 0.875rem; font-weight: 500; }
input[type="email"] {
  background: #09090b;
  border: 1px solid #27272a;
  border-radius: 8px;
  padding: 0.5rem 0.75rem;
  color: inherit;
  font-size: 0.875rem;
}
input[type="email"]:focus { outline: 2px solid #3b82f6; outline-offset: 0; }
button {
  margin-top: 0.5rem;
  background: #3b82f6;
  color: #fff;
  border: 0;
  padding: 0.5rem 1rem;
  border-radius: 8px;
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
}
button:hover { background: #2563eb; }
footer {
  margin-top: 1.5rem;
  text-align: center;
  color: #71717a;
  font-size: 0.75rem;
}