:root{--white:#fff;--porcelain:#f6f6fa;--violet-wash:#f0effa;--indigo:#151581;--lavender:#7272a8;--graphite:#292824;--fog:#dcdce8;--gradient:linear-gradient(105deg,#667fff,#cea2ff 52%,#ff85b1);--shadow:0 8px 34px rgba(36,36,41,.07),0 1px 2px rgba(37,36,41,.09);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--indigo);background:var(--white);font-weight:400}*{box-sizing:border-box}html{scroll-padding-top:24px}body{margin:0;min-width:320px;background:var(--white);font-size:16px;line-height:1.5}button,input,textarea,select{font:inherit;color:inherit}a,button{transition:color .2s ease,background-color .2s ease,box-shadow .2s ease,opacity .2s ease}.app-shell{min-height:100vh;display:grid;grid-template-columns:264px minmax(0,1fr);background:var(--white)}.sidebar{position:sticky;top:0;z-index:10;height:100vh;padding:28px 20px 20px;border-inline-end:1px solid var(--fog);background:var(--white);display:flex;flex-direction:column;gap:28px}.brand{display:flex;align-items:center;gap:10px;color:var(--indigo);font-family:Manrope,Inter,sans-serif;font-size:17px;font-weight:500;letter-spacing:-.02em;text-decoration:none}.brand::before{content:"";width:18px;height:18px;border-radius:50%;background:var(--gradient);box-shadow:inset 0 0 0 5px var(--white);outline:1px solid var(--fog)}.sidebar nav{display:flex;flex:1;flex-direction:column;gap:4px}.nav-item{min-height:44px;padding:11px 14px;border-radius:999px;color:var(--lavender);text-decoration:none}.nav-item:hover{background:var(--porcelain);color:var(--indigo)}.nav-item.active{background:var(--violet-wash);color:var(--indigo)}.nav-label,.eyebrow{margin:22px 14px 6px;color:var(--lavender);font-size:12px;font-weight:500;letter-spacing:.02em}.content{width:100%;max-width:1200px;margin:0 auto;padding:52px clamp(24px,5vw,72px) 72px}header{margin-block-end:32px}header .eyebrow{margin:0 0 10px}h1,h2,p{margin-top:0}h1,h2{font-family:Manrope,Inter,sans-serif;font-weight:400;letter-spacing:-.035em}h1{max-width:760px;margin-bottom:0;color:var(--indigo);font-size:clamp(34px,4.2vw,52px);line-height:1.02}h2{color:var(--indigo);font-size:22px;line-height:1.15}.card,.message,.timeline-item,.auth-card{border:0;background:var(--porcelain);border-radius:24px;padding:24px}.history-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:20px;margin:36px 0 24px}.messages{min-height:56vh;display:flex;flex-direction:column;gap:12px;padding:8px 0 28px}.message{max-width:min(76%,680px)}.message.assistant{border-start-start-radius:8px}.message.user{align-self:flex-end;border-end-end-radius:8px;background:var(--indigo);color:var(--white)}.message span,.timeline-item span,.muted,.status{color:var(--lavender);font-size:12px}.message.user span{color:#d2d2ee}.message p{margin:7px 0 0;white-space:pre-wrap}.composer{position:sticky;bottom:18px;display:flex;gap:10px;padding:9px;border:1px solid transparent;border-radius:26px;background:linear-gradient(var(--white),var(--white)) padding-box,var(--gradient) border-box;box-shadow:var(--shadow)}.composer textarea{flex:1;min-height:52px;max-height:180px;border:0;background:transparent;padding:13px 14px;resize:none;outline:none}.composer textarea::placeholder{color:var(--lavender)}.primary-button,.ghost-button{min-height:44px;padding:10px 18px;border-radius:999px;cursor:pointer;font-weight:500}.primary-button{border:1px solid var(--indigo);background:var(--white);color:var(--indigo)}.primary-button:hover{background:var(--indigo);color:var(--white)}.ghost-button{border:1px solid var(--fog);background:var(--white);color:var(--indigo)}.ghost-button:hover{background:var(--violet-wash);border-color:var(--violet-wash)}button:disabled{cursor:wait;opacity:.55}label{display:grid;gap:7px;margin-bottom:14px;color:var(--indigo);font-size:14px}input,textarea,select{width:100%;min-height:44px;padding:11px 14px;border:1px solid var(--fog);border-radius:16px;background:var(--white)}.timeline{display:grid;gap:12px}.timeline-item{background:var(--white);box-shadow:inset 0 0 0 1px var(--fog)}.timeline-item a{color:var(--indigo);text-underline-offset:4px}.badge{display:inline-block;margin-bottom:18px;padding:6px 12px;border-radius:999px;background:var(--violet-wash);color:var(--indigo);font-size:12px;font-weight:500}.center-state,.empty-state{max-width:720px;margin:0 auto;padding:16vh 20px;text-align:center}.center-state p,.empty-state p{color:var(--lavender)}.auth-page{min-height:100vh;display:grid;place-items:center;padding:20px;background:var(--white)}.auth-card{width:min(100%,440px);padding:36px;background:var(--porcelain);box-shadow:var(--shadow)}.auth-card .eyebrow{margin:0 0 10px}.auth-card h1{margin-bottom:32px;font-size:clamp(34px,8vw,46px)}.form-error{padding-inline-start:14px;border-inline-start:3px solid var(--indigo);color:var(--graphite)}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}:focus-visible{outline:2px solid var(--indigo);outline-offset:3px}dl{display:grid;grid-template-columns:140px minmax(0,1fr);gap:16px}dt{color:var(--lavender)}dd{margin:0}@media(prefers-reduced-motion:reduce){*,*::before,*::after{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important}}@media(max-width:760px){.app-shell{display:block}.sidebar{position:static;width:100%;height:auto;padding:14px 16px;border-inline-end:0;border-block-end:1px solid var(--fog);gap:14px}.sidebar nav{display:grid;grid-template-columns:1fr 1fr;gap:4px}.nav-label{grid-column:1/-1;margin-top:10px}.sidebar form{display:none}.content{padding:34px 16px 110px}header{margin-block-end:24px}.history-grid{grid-template-columns:1fr}.message{max-width:92%;padding:18px}.composer{bottom:8px;border-radius:22px}.composer .primary-button{padding-inline:14px}dl{grid-template-columns:1fr;gap:4px}dd{margin-bottom:14px}}