:root { --bg: #0f1218; --card: #171b23; --line: #262c38; --text: #e7eaf0; --muted: #8b93a3; --accent: #3b82f6; --bad: #f05d5d; }
@media (prefers-color-scheme: light) { :root { --bg: #f4f5f8; --card: #fff; --line: #e2e5eb; --text: #151821; --muted: #667085; } }
* { box-sizing: border-box; }
body { margin: 0; min-height: 100vh; display: grid; place-items: center; background: var(--bg); color: var(--text); font: 15px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, sans-serif; padding: 16px; }
.card { width: 100%; max-width: 340px; background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 28px; display: grid; gap: 10px; }
.logo { display: flex; align-items: center; gap: 10px; font-weight: 650; font-size: 17px; margin-bottom: 10px; }
label { font-size: 13px; color: var(--muted); }
input { font: inherit; padding: 10px 12px; border-radius: 8px; border: 1px solid var(--line); background: var(--bg); color: var(--text); }
input:focus { outline: 2px solid var(--accent); outline-offset: 1px; }
button { font: inherit; font-weight: 600; padding: 10px; border: 0; border-radius: 8px; background: var(--accent); color: #fff; cursor: pointer; margin-top: 6px; }
.err { color: var(--bad); margin: 0; font-size: 14px; }