:root{--ink:#172033;--muted:#6b7280;--surface:#ffffff;--soft:#f4f7fb;--line:#e5e9f0;--accent:#635bff;--accent-2:#8b5cf6;--accent-soft:#eeedff;--shadow:0 24px 70px rgba(23,32,51,.12)}*{box-sizing:border-box}body{margin:0;font-family:Inter,system-ui,sans-serif;color:var(--ink);background:linear-gradient(135deg,#f7f8fc,#eef2f8);min-height:100vh}.shell{background:var(--surface);border:1px solid rgba(255,255,255,.8);border-radius:28px;box-shadow:var(--shadow);display:grid;grid-template-columns:1fr 1fr}.brand-panel{background:linear-gradient(145deg,#171d35,#25204b);color:white;display:flex;flex-direction:column;justify-content:center;min-height:560px}.brand-mark{width:58px;height:58px;border-radius:17px;background:linear-gradient(135deg,var(--accent),var(--accent-2));display:grid;place-items:center;font-weight:800;font-size:27px;margin-bottom:28px;box-shadow:0 12px 30px rgba(99,91,255,.3)}.eyebrow{font-size:11px;font-weight:800;letter-spacing:.16em;margin:0 0 12px;opacity:.72}.brand-panel h1{font-size:48px;line-height:1;margin:0 0 22px;letter-spacing:-.05em}.brand-panel h1 span{font-weight:500;opacity:.82}.tagline{font-size:20px;line-height:1.55;color:rgba(255,255,255,.76);margin:0}.login-panel{display:flex;align-items:center;background:white}.login-panel h2{font-size:34px;letter-spacing:-.04em;margin:0 0 8px}.muted{color:var(--muted);font-size:14px}label{display:block;font-size:13px;font-weight:600;color:#30394c}input{display:block;width:100%;margin-top:8px;padding:14px 15px;border:1px solid var(--line);border-radius:12px;background:#fbfcfe;color:var(--ink);outline:none;font:inherit;transition:.2s}input:focus{border-color:var(--accent);box-shadow:0 0 0 4px var(--accent-soft)}.primary-btn{width:100%;border:0;border-radius:12px;padding:14px 16px;background:linear-gradient(135deg,var(--accent),var(--accent-2));color:white;font-weight:700;font-size:14px;cursor:pointer;box-shadow:0 10px 24px rgba(99,91,255,.22);transition:transform .15s,box-shadow .15s}.primary-btn:hover{transform:translateY(-1px);box-shadow:0 13px 28px rgba(99,91,255,.28)}.message{min-height:20px;font-size:13px;color:#b42318}.signup-cta{margin-top:24px;padding-top:22px;border-top:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:16px;font-size:13px;color:var(--muted)}.signup-cta a{color:var(--accent);font-weight:700;text-decoration:none;white-space:nowrap}.signup-cta a:hover{text-decoration:underline}.signup-cta strong{font-size:16px;margin-left:4px}.demo-note{margin-top:24px;padding-top:18px;border-top:1px solid var(--line);font-size:11px;color:#98a0ae}@media(max-width:800px){.shell{grid-template-columns:1fr}.brand-panel{min-height:auto;padding:36px!important}.login-panel{padding:36px!important}.brand-panel h1{font-size:40px}.signup-cta{align-items:flex-start;flex-direction:column;gap:8px}}