:root {
  --bg: #0e0f12;
  --fg: #e6e6e6;
  --muted: #8a8f99;
  --card: #16181d;
  --accent: #6ea8fe;
  --error: #ff6b6b;
  --border: #262932;
}
@media (prefers-color-scheme: light) {
  :root {
    --bg: #f7f7f8;
    --fg: #1c1d20;
    --muted: #6b7280;
    --card: #ffffff;
    --accent: #2563eb;
    --error: #b00020;
    --border: #e5e7eb;
  }
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--fg);
  min-height: 100vh;
}

.topbar {
  display: flex;
  align-items: center;
  padding: 14px 22px;
  border-bottom: 1px solid var(--border);
}
.brand { font-weight: 600; letter-spacing: 0.2px; }
.brand-accent { color: var(--muted); }

main {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 48px 22px;
}

.card {
  width: 100%;
  max-width: 420px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 28px;
}
.card h1 { margin: 0 0 8px; font-size: 22px; }
.card p { margin: 8px 0; line-height: 1.5; }
.muted { color: var(--muted); font-size: 14px; }
.error {
  background: rgba(255, 107, 107, 0.12);
  border: 1px solid var(--error);
  color: var(--error);
  padding: 10px 12px;
  border-radius: 6px;
  margin: 12px 0;
  font-size: 14px;
}

label { display: block; margin: 16px 0 6px; font-size: 14px; }
input[type="email"] {
  width: 100%;
  padding: 10px 12px;
  background: var(--bg);
  color: var(--fg);
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 15px;
}
input[type="email"]:focus { outline: 2px solid var(--accent); outline-offset: 1px; }

.btn {
  display: inline-block;
  padding: 10px 16px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 14px;
  cursor: pointer;
  background: var(--card);
  color: var(--fg);
}
.btn-primary {
  background: var(--accent);
  color: white;
  border-color: var(--accent);
  margin-top: 16px;
}
.btn-primary:hover { filter: brightness(1.05); }