/* Cosmos Ultra — clean layering, contrast and user-approved cinematic assets */
:root{--bg:#06050b;--side:#080711;--surface:#110d1d;--surface2:#1c112b;--surface3:#211735;--hair:#3a2752;--text:#f9f6ff;--muted:#a79cb8;--soft:#e1d8f1;--blue:#c199ff;--violet:#a04afc;--ring:0 0 0 3px rgba(163,83,250,.22)}
.sidebar{background:linear-gradient(160deg,#090611,#140821 70%,#08050c);border-right-color:rgba(189,135,255,.16)}
.brand{padding-bottom:19px;gap:13px}.brand-mark.cosmos-lotus{width:48px!important;height:48px!important;box-shadow:none!important;background:transparent!important;padding:0!important;border:0!important}.brand-mark.cosmos-lotus img{width:100%;height:100%;object-fit:contain;filter:drop-shadow(0 0 12px rgba(174,102,255,.6))}.brand-name{font-size:20px;font-weight:850;letter-spacing:.045em}.brand-kicker{font-size:9px;letter-spacing:.21em}
.sidebar-btn{border-radius:14px;padding:13px 15px;font-weight:620;transition:background .2s,border .2s,box-shadow .2s,color .2s,transform .2s}.sidebar-btn.active{color:white;background:linear-gradient(120deg,rgba(95,14,204,.57),rgba(72,19,144,.48));box-shadow:inset 0 0 0 1px #ae68ff,0 0 24px rgba(127,37,255,.16)}.sidebar-btn.active svg{color:#f7e8ff}.sidebar-btn:hover{transform:translateX(2px);background:rgba(147,65,254,.13)}
.new-btn,.primary-action,.send{background:linear-gradient(115deg,#6413DC,#A43AFB 70%,#B953F4)!important;color:#fff!important;border:1px solid #d18bff!important;box-shadow:0 6px 26px rgba(123,45,255,.21)!important}.new-btn:hover,.primary-action:hover,.send:hover{box-shadow:0 7px 33px rgba(145,55,255,.39)!important}
.cosmos-scene{background:radial-gradient(ellipse 75% 48% at 70% 16%,rgba(69,11,130,.24),transparent 75%),#07050c}
.cosmos-aurora{opacity:.58}.cosmos-galaxy{width:min(41vw,540px);height:auto;aspect-ratio:700 / 890;top:2%;right:-9%;border-radius:0;background-image:linear-gradient(90deg,#07050c 0%,rgba(7,5,12,.10) 50%,transparent),url('/assets/nebula.webp')!important;background-size:cover;background-position:center;mix-blend-mode:screen;opacity:.38;filter:saturate(1.25) brightness(.86);mask-image:linear-gradient(to bottom,transparent,black 9%,black 65%,transparent)}
.cosmos-ship{width:min(18vw,250px)!important;height:auto!important;min-width:142px;right:7%!important;top:9%!important;filter:drop-shadow(0 0 20px rgba(178,82,255,.6))}.cosmos-ship img.rocket-art{width:100%;height:auto;display:block}.cosmos-ship-trail{width:140px;left:-126px;top:58%;background:linear-gradient(90deg,transparent,#aa5cff,#fff);height:3px}
.main{background:#07060c}.stage{isolation:isolate}.research-chat-stage{background:transparent!important}.research-chat-top{backdrop-filter:blur(22px)}.research-chat-feed{scrollbar-color:#694090 transparent}
.composer,.research-chat-composer,.research-composer,.research-chat-input,.research-message-assistant{box-shadow:0 12px 50px rgba(0,0,0,.2)}
.device-card{background:linear-gradient(150deg,rgba(108,38,181,.12),rgba(11,9,18,.7));border-color:rgba(167,94,255,.3)}
/* light universe: preserve legible panels and celestial hero */
html.cosmos-light,body.cosmos-light,body[data-cosmos-theme="light"]{--bg:#faf8ff;--side:#f8f5ff;--surface:#ffffff;--surface2:#f3ecff;--surface3:#eee5ff;--hair:#d9c8ef;--text:#181025;--muted:#675c79;--soft:#493b62;--blue:#6930c3;--violet:#8240e9}
body.cosmos-light .cosmos-galaxy,body[data-cosmos-theme="light"] .cosmos-galaxy{background-image:linear-gradient(90deg,#faf8ff 0%,rgba(250,248,255,.15) 60%,transparent),url('/assets/nebula-light.webp')!important;mix-blend-mode:multiply;opacity:.33;filter:saturate(.8) brightness(1.1)}
body.cosmos-light .sidebar,body[data-cosmos-theme="light"] .sidebar{background:linear-gradient(155deg,#fff,#f2eaff)}
body.cosmos-light .brand-mark.cosmos-lotus img{filter:drop-shadow(0 2px 9px rgba(98,42,170,.6))}
@media(max-width:1050px){.cosmos-galaxy{width:78vw;right:-28%;opacity:.35}.cosmos-ship{opacity:.75;right:5%!important;top:12%!important}}
@media(max-width:650px){.cosmos-galaxy{width:110vw;right:-55%;top:7%;opacity:.28}.cosmos-ship{min-width:125px;right:0!important;top:10%!important;opacity:.6}}
@media(prefers-reduced-motion:reduce){.sidebar-btn,.new-btn,.primary-action,.send{transition:none!important}}

body[data-cosmos-theme="light"] .main{background:#faf8ff!important}
body[data-cosmos-theme="light"] .cosmos-scene{background:radial-gradient(circle at 75% 15%,#e6ceff 0%,transparent 68%),#fdfbff!important}
body[data-cosmos-theme="light"] .inspector{background:#faf8ff!important}

body[data-cosmos-theme="light"] .brand-name{color:#28173d!important}
body[data-cosmos-theme="light"] .brand-kicker{color:#786589!important}
body[data-cosmos-theme="light"] .sidebar-btn{color:#55426c!important}
body[data-cosmos-theme="light"] .sidebar-btn.active{color:#581bb1!important;background:#f2e5ff!important;border-color:#a663ff!important;box-shadow:0 3px 18px rgba(155,88,234,.18)!important}
body[data-cosmos-theme="light"] .cosmos-galaxy{mix-blend-mode:multiply!important;opacity:.22!important}