:root{--bg:#0b0d10;--card:#14181d;--border:#262c34;--fg:#e6e9ee;--muted:#9aa4b2;--accent:#4f8cff;color-scheme:dark}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--fg);font:15px/1.5 system-ui,-apple-system,Segoe UI,Roboto,sans-serif}.shell{max-width:720px;margin:0 auto;padding:48px 20px}.card{background:var(--card);border:1px solid var(--border);border-radius:12px;padding:24px;margin-bottom:16px}h1{font-size:22px;margin:0 0 4px}h2{font-size:15px;text-transform:uppercase;letter-spacing:.04em;margin:0 0 12px}.muted,h2{color:var(--muted)}.row{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:8px 0;border-top:1px solid var(--border)}.row:first-of-type{border-top:none}.btn{display:inline-block;padding:10px 16px;border-radius:8px;border:1px solid var(--border);background:#1c2229;color:var(--fg);font-size:14px;cursor:pointer;text-decoration:none}.btn.primary{background:var(--accent);border-color:var(--accent);color:#fff}.btn.small{padding:6px 12px;font-size:13px}.stack{display:flex;flex-direction:column;gap:12px}.tag{display:inline-block;padding:2px 8px;border-radius:999px;background:#1c2229;border:1px solid var(--border);font-size:12px;color:var(--muted)}.banner{background:#12251b;border:1px solid #1f5137;color:#a7e8c4}.auth{min-height:calc(100vh - 96px);display:flex;flex-direction:column;align-items:center;justify-content:center}.auth-card{width:100%;max-width:400px;background:var(--card);border:1px solid var(--border);border-radius:16px;padding:36px 32px;box-shadow:0 16px 48px rgba(0,0,0,.4)}.brand{display:flex;align-items:center;gap:10px;margin-bottom:28px}.brand-mark{width:40px;height:40px;border-radius:10px;display:grid;place-items:center;background:linear-gradient(135deg,var(--accent),#8bb6ff);color:#fff;font-weight:700;font-size:20px;letter-spacing:-.02em}.brand-name{font-size:16px;font-weight:600;letter-spacing:-.01em}.auth-title{font-size:24px;font-weight:650;margin:0 0 6px;letter-spacing:-.01em}.auth-sub{color:var(--muted);margin:0 0 28px;font-size:14px}.btn.provider{display:flex;align-items:center;justify-content:center;gap:10px;width:100%;padding:12px 16px;font-weight:500;transition:border-color .15s ease,background .15s ease}.btn.provider:hover{border-color:#3a424d;background:#222932}.btn.provider svg{width:18px;height:18px;flex-shrink:0}.auth-error{background:#2a1618;border:1px solid #5a2b2b;color:#f0a5a5;border-radius:8px;padding:10px 12px;font-size:13px;margin-bottom:20px}