:root{--navy:#212749;--cyan:#00fef7;--electric:#1b37ff;--white:#fff;--muted:hsla(0,0%,100%,.72);--card:hsla(0,0%,100%,.08);--stroke:hsla(0,0%,100%,.16)}*{box-sizing:border-box}body,html{margin:0;min-height:100%}body{font-family:Montserrat,Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;background:radial-gradient(circle at top left,rgba(0,254,247,.18),transparent 30rem),radial-gradient(circle at bottom right,rgba(27,55,255,.22),transparent 34rem),var(--navy);color:var(--white)}button,input,textarea{font:inherit}button{cursor:pointer}.main-shell{min-height:100vh;display:grid;place-items:center;padding:32px 18px}.chat-card{width:min(980px,100%);min-height:min(820px,calc(100vh - 64px));display:grid;grid-template-rows:auto 1fr auto;overflow:hidden;border:1px solid var(--stroke);border-radius:32px;background:linear-gradient(145deg,hsla(0,0%,100%,.13),hsla(0,0%,100%,.055));box-shadow:0 28px 90px rgba(0,0,0,.28);-webkit-backdrop-filter:blur(22px);backdrop-filter:blur(22px)}.hero{padding:30px clamp(22px,5vw,48px) 24px;border-bottom:1px solid var(--stroke)}.brand{display:inline-flex;align-items:center;gap:10px;margin-bottom:22px;color:var(--cyan);font-size:.78rem;font-weight:800;letter-spacing:.13em;text-transform:uppercase}.brand-dot{width:10px;height:10px;border-radius:999px;background:var(--cyan);box-shadow:0 0 22px var(--cyan)}h1{margin:0 0 12px;max-width:780px;font-size:clamp(2rem,5vw,4.15rem);line-height:.98;letter-spacing:-.055em}.subtitle{max-width:800px;margin:0;color:var(--muted);font-size:clamp(.98rem,1.8vw,1.12rem);line-height:1.65}.messages{flex-direction:column;gap:16px;min-height:360px;overflow-y:auto;padding:28px clamp(18px,5vw,48px)}.bubble-row,.messages{display:flex}.bubble-row.user{justify-content:flex-end}.bubble-row.assistant{justify-content:flex-start}.bubble{max-width:min(78%,680px);padding:15px 18px;border-radius:22px;line-height:1.55;white-space:pre-wrap}.user .bubble{color:var(--white);background:linear-gradient(135deg,var(--electric),#334cff);border-bottom-right-radius:8px}.assistant .bubble{color:hsla(0,0%,100%,.92);background:hsla(0,0%,100%,.105);border:1px solid hsla(0,0%,100%,.12);border-bottom-left-radius:8px}.handoff-panel,.recommendation-card{margin-top:6px;align-self:flex-start;width:min(680px,100%);padding:18px;border:1px solid rgba(0,254,247,.35);border-radius:24px;background:rgba(0,254,247,.08)}.recommendation-card{border-color:rgba(0,254,247,.46);background:linear-gradient(145deg,rgba(0,254,247,.12),hsla(0,0%,100%,.075))}.recommendation-kicker{margin:0 0 8px;color:var(--cyan);font-size:.76rem;font-weight:800;letter-spacing:.12em;text-transform:uppercase}.recommendation-card h2{margin:0 0 10px;font-size:clamp(1.35rem,3vw,2rem);letter-spacing:-.035em}.handoff-panel p,.recommendation-card>p:not(.recommendation-kicker){margin:0 0 14px;color:hsla(0,0%,100%,.86);line-height:1.55}.actions{display:flex;flex-wrap:wrap;gap:12px}.primary-button,.secondary-button,.send-button{display:inline-flex;align-items:center;justify-content:center;border:0;border-radius:999px;font-weight:800;line-height:1.1;text-decoration:none;transition:transform .16s ease,opacity .16s ease,box-shadow .16s ease,border-color .16s ease,background .16s ease}.primary-button:hover,.secondary-button:hover,.send-button:hover{transform:translateY(-1px)}.primary-button:disabled,.secondary-button:disabled,.send-button:disabled{cursor:not-allowed;opacity:.55;transform:none}.primary-button{padding:13px 18px;color:#07122d;background:var(--cyan);box-shadow:0 12px 34px rgba(0,254,247,.22)}.secondary-button{padding:13px 18px;color:var(--white);background:hsla(0,0%,100%,.08);border:1px solid hsla(0,0%,100%,.28);box-shadow:inset 0 1px 0 hsla(0,0%,100%,.08)}.secondary-button:hover{background:hsla(0,0%,100%,.13);border-color:rgba(0,254,247,.46)}.composer{display:grid;grid-template-columns:1fr auto;grid-gap:12px;gap:12px;padding:20px clamp(18px,5vw,48px) 28px;border-top:1px solid var(--stroke)}.input{width:100%;min-height:54px;max-height:140px;resize:vertical;padding:16px 18px;border:1px solid hsla(0,0%,100%,.18);border-radius:22px;outline:none;color:var(--white);background:hsla(0,0%,100%,.095)}.input::placeholder{color:hsla(0,0%,100%,.48)}.input:focus{border-color:rgba(0,254,247,.62);box-shadow:0 0 0 4px rgba(0,254,247,.08)}.send-button{min-width:116px;padding:0 24px;color:#07122d;background:var(--white)}.error{margin:0 clamp(18px,5vw,48px) 18px;color:#ffd2d2}@media (max-width:680px){.main-shell{padding:0;place-items:stretch}.chat-card{min-height:100vh;border-radius:0;border-left:0;border-right:0}.bubble{max-width:92%}.composer{grid-template-columns:1fr}.send-button{min-height:52px}}