:root{font-family:Inter,Segoe UI,Arial,sans-serif;color:#162033;background:#f1f5f7;line-height:1.5}*{box-sizing:border-box}body{margin:0;min-height:100vh}.auth-shell{min-height:100vh;display:grid;grid-template-columns:minmax(300px,42%) 1fr}.brand-panel{padding:clamp(2rem,7vw,6rem);display:flex;flex-direction:column;justify-content:center;color:#fff;background:linear-gradient(145deg,#062f36,#0b6f69)}.brand-mark{display:grid;place-items:center;width:68px;height:68px;border-radius:20px;background:#b9ef38;color:#163523;font-weight:900;font-size:1.5rem}.eyebrow{font-size:.72rem;letter-spacing:.16em;font-weight:800;color:#56a29d}.brand-panel .eyebrow{margin:2rem 0 .4rem;color:#b9ef38}.brand-panel h1{max-width:530px;margin:0;font-size:clamp(2rem,4vw,4rem);line-height:1.05}.brand-panel p:last-child{max-width:500px;color:#d5efed}.login-panel{padding:2rem;display:grid;place-items:center}.login-card{width:min(430px,100%);padding:clamp(1.5rem,4vw,2.7rem);border-radius:24px;background:#fff;box-shadow:0 24px 70px rgba(21,48,54,.12)}h2{margin:.15rem 0 .5rem;font-size:1.8rem}.intro{margin:0 0 1.7rem;color:#68727f}label{display:grid;gap:.45rem;margin:1rem 0;font-size:.85rem;font-weight:700}input{width:100%;border:1px solid #cad3d7;border-radius:12px;padding:.9rem 1rem;font:inherit;outline:none}input:focus{border-color:#08776f;box-shadow:0 0 0 3px rgba(8,119,111,.12)}button{width:100%;margin-top:1rem;border:0;border-radius:12px;padding:.95rem 1rem;background:#0a706a;color:#fff;font:inherit;font-weight:800;cursor:pointer}button:disabled{opacity:.55;cursor:wait}.secondary{background:#eef4f3;color:#28514e}.message{min-height:1.5rem;margin:.9rem 0 0;color:#a02929;font-size:.87rem}.message.success{color:#237248}.session-card{text-align:center}.session-card p{color:#66717c}@media(max-width:760px){.auth-shell{grid-template-columns:1fr}.brand-panel{min-height:34vh;padding:2rem}.brand-panel h1{font-size:2rem}.brand-panel p:last-child{margin-bottom:0}.login-panel{padding:1rem;align-items:start}.login-card{margin-top:-1.5rem}}