:root {
  --nova-bg: #050508;
  --nova-panel: rgba(16, 16, 24, .82);
  --nova-paper: #f5f2eb;
  --nova-muted: #9c99a8;
  --nova-violet: #7657ff;
  --nova-blue: #35b9ff;
  --nova-line: rgba(255, 255, 255, .13);
  --nova-safe-bottom: env(safe-area-inset-bottom, 0px);
}

* { box-sizing: border-box; }
html { min-height: 100%; overflow-x: clip; background: var(--nova-bg); scrollbar-gutter: stable; }
body { min-height: 100%; margin: 0; overflow-x: clip; overflow-y: visible; color: var(--nova-paper); font-family: Arial, Helvetica, sans-serif; -webkit-font-smoothing: antialiased; }
button, textarea { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
button:focus-visible, a:focus-visible, textarea:focus-visible { outline: 2px solid var(--nova-blue); outline-offset: 3px; }
.nova-loading { min-height: 100dvh; display: grid; place-items: center; color: var(--nova-muted); font: 700 11px/1.5 "Courier New", monospace; letter-spacing: .22em; }
.nova-shell { min-height: 100dvh; background: radial-gradient(circle at 85% -10%, rgba(118,87,255,.25), transparent 34%), radial-gradient(circle at 5% 90%, rgba(53,185,255,.12), transparent 28%), var(--nova-bg); }
.nova-topbar { min-height: 76px; padding: 12px max(24px, env(safe-area-inset-left)) 12px max(24px, env(safe-area-inset-right)); display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 20px; border-bottom: 1px solid var(--nova-line); backdrop-filter: blur(18px); position: sticky; top: 0; z-index: 10; background: rgba(5,5,8,.78); }
.nova-back { justify-self: start; min-height: 44px; display: inline-flex; align-items: center; color: var(--nova-muted); text-decoration: none; font-size: 10px; font-weight: 800; letter-spacing: .16em; }
.nova-brand { text-align: center; }
.nova-mark { display: block; font-size: 25px; font-weight: 950; letter-spacing: .22em; background: linear-gradient(110deg, #fff, #b5a5ff 52%, #35b9ff); color: transparent; background-clip: text; }
.nova-status { display: block; margin-top: 3px; color: var(--nova-muted); font: 700 7px/1.3 "Courier New", monospace; letter-spacing: .15em; }
.nova-actions { justify-self: end; display: flex; gap: 8px; }
.nova-icon-button, .nova-install, .nova-account { min-width:44px; min-height:44px; display:inline-flex; align-items:center; justify-content:center; border:1px solid var(--nova-line); border-radius:999px; background:transparent; color:var(--nova-paper); cursor:pointer; text-decoration:none; }
.nova-install,.nova-account { padding-inline:15px; font-size:9px; font-weight:900; letter-spacing:.12em; }
.nova-icon-button:hover,.nova-install:hover,.nova-account:hover { border-color:rgba(118,87,255,.8); background:rgba(118,87,255,.13); }
.nova-workspace { width: min(1180px, calc(100% - 48px)); min-height: calc(100dvh - 76px); margin: 0 auto; display: grid; grid-template-columns: 290px minmax(0, 1fr); }
.nova-profile { padding: 54px 34px 40px 0; border-right: 1px solid var(--nova-line); }
.nova-orb { width: 92px; aspect-ratio: 1; border-radius: 50%; display: grid; place-items: center; font-size: 31px; font-weight: 950; background: radial-gradient(circle at 32% 25%, #fff, #8a73ff 23%, #30205e 55%, #09090e 73%); box-shadow: 0 0 60px rgba(118,87,255,.38), inset 0 0 24px rgba(255,255,255,.2); }
.nova-profile h1 { margin: 34px 0 13px; font-size: 42px; letter-spacing: -.055em; }
.nova-profile-copy { color: var(--nova-muted); font-size: 14px; line-height: 1.7; }
.nova-traits { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 28px; }
.nova-trait { padding: 8px 9px; border: 1px solid var(--nova-line); color: #c9c4d7; font: 700 8px/1 "Courier New", monospace; letter-spacing: .08em; text-transform: uppercase; }
.nova-memory { margin-top: 32px; padding-top: 24px; border-top: 1px solid var(--nova-line); }
.nova-memory strong { display: block; color: #c6baff; font: 800 9px/1.4 "Courier New", monospace; letter-spacing: .13em; }
.nova-memory p { margin: 10px 0 0; color: var(--nova-muted); font-size: 12px; line-height: 1.55; }
.nova-platform { margin-top:22px; padding:18px; border:1px solid var(--nova-line); border-radius:14px; background:rgba(255,255,255,.025); }
.nova-platform strong { color:#8fd6ff; font:800 9px "Courier New",monospace; letter-spacing:.12em; }
.nova-platform p { margin:9px 0 0; color:var(--nova-muted); font-size:12px; line-height:1.55; }
.nova-chat { min-width: 0; min-height: calc(100dvh - 76px); display: grid; grid-template-rows: auto 1fr auto; }
.nova-intro { padding: 50px 54px 30px; }
.nova-kicker { color: #aa98ff; font: 800 9px/1.4 "Courier New", monospace; letter-spacing: .19em; }
.nova-intro h2 { max-width: 770px; margin: 17px 0 12px; font-size: clamp(30px, 4vw, 56px); line-height: .97; letter-spacing: -.05em; }
.nova-intro p { max-width: 680px; margin: 0; color: var(--nova-muted); line-height: 1.7; }
.nova-messages { min-height: 240px; padding: 12px 54px 32px; scroll-behavior: smooth; }
.nova-message { max-width: min(720px, 88%); margin: 14px 0; padding: 17px 19px; border: 1px solid var(--nova-line); border-radius: 18px; line-height: 1.65; white-space: pre-wrap; overflow-wrap: anywhere; }
.nova-message.user { margin-left: auto; background: linear-gradient(135deg, rgba(118,87,255,.25), rgba(53,185,255,.08)); border-bottom-right-radius: 5px; }
.nova-message.assistant { background: var(--nova-panel); border-bottom-left-radius: 5px; }
.nova-message.system { max-width: 100%; color: #ffb3c0; background: rgba(255,61,90,.08); }
.nova-message-label { display: block; margin-bottom: 7px; color: var(--nova-muted); font: 800 8px/1.2 "Courier New", monospace; letter-spacing: .15em; }
.nova-typing { opacity: .65; }
.nova-composer-wrap { padding: 18px 54px calc(24px + var(--nova-safe-bottom)); border-top: 1px solid var(--nova-line); background: rgba(5,5,8,.78); backdrop-filter: blur(18px); }
.nova-composer { min-height: 64px; display: grid; grid-template-columns: minmax(0,1fr) auto; align-items: end; gap: 12px; padding: 10px 10px 10px 18px; border: 1px solid var(--nova-line); border-radius: 20px; background: rgba(255,255,255,.035); }
.nova-composer textarea { width: 100%; max-height: 160px; min-height: 42px; resize: none; border: 0; outline: 0; padding: 10px 0; background: transparent; color: var(--nova-paper); line-height: 1.5; }
.nova-composer textarea::placeholder { color: #777382; }
.nova-send { min-width: 116px; min-height: 44px; border: 0; border-radius: 14px; color: #fff; background: linear-gradient(110deg, var(--nova-violet), #5544e8 55%, #247ec7); font-size: 9px; font-weight: 950; letter-spacing: .14em; cursor: pointer; }
.nova-send:disabled { opacity: .45; cursor: wait; }
.nova-note { margin: 10px 2px 0; color: #777382; font-size: 10px; line-height: 1.45; }
.nova-installer { position:fixed; inset:0; z-index:100; padding:24px; display:grid; place-items:center; background:rgba(2,2,5,.76); backdrop-filter:blur(14px); }
.nova-installer[hidden] { display:none; }
.nova-installer-card { width:min(720px,100%); padding:32px; border:1px solid var(--nova-line); border-radius:24px; background:linear-gradient(145deg,#12121d,#08080d); box-shadow:0 35px 110px rgba(0,0,0,.65); }
.nova-installer-head { display:grid; grid-template-columns:1fr auto; align-items:start; gap:20px; }
.nova-installer-head .nova-kicker { grid-column:1; }
.nova-installer-head h2 { grid-column:1; margin:12px 0 0; font-size:clamp(38px,7vw,72px); line-height:.88; letter-spacing:-.06em; }
.nova-installer-head button { grid-column:2; grid-row:1/3; }
.nova-installer-copy { margin:28px 0 0; color:var(--nova-muted); line-height:1.7; }
.nova-installer-steps { margin:24px 0 0; padding-left:22px; color:#d5d1df; line-height:1.8; }
.nova-installer-actions { display:flex; flex-wrap:wrap; gap:10px; margin-top:28px; }
.nova-install-action { min-height:48px; padding:0 20px; border:0; border-radius:999px; background:linear-gradient(110deg,var(--nova-violet),var(--nova-blue)); color:white; cursor:pointer; text-decoration:none; display:inline-flex; align-items:center; font-size:9px; font-weight:900; letter-spacing:.12em; }
.nova-install-action.danger { border:1px solid rgba(255,61,90,.45);background:rgba(255,61,90,.1);color:#ff9cad; }
.nova-install-action.secondary { border:1px solid var(--nova-line); background:transparent; }

@media (max-width: 900px) {
  .nova-workspace { width: 100%; grid-template-columns: 1fr; }
  .nova-profile { display: none; }
  .nova-intro, .nova-messages, .nova-composer-wrap { padding-inline: 28px; }
}

@media (max-width: 600px) {
  .nova-topbar { min-height: 68px; padding-inline: 14px; grid-template-columns: 50px 1fr auto; gap: 8px; }
  .nova-back { width: 44px; overflow: hidden; font-size: 0; }
  .nova-back::before { content: "←"; font-size: 21px; }
  .nova-status { font-size: 6px; }
  .nova-install { min-width: 44px; width: 44px; padding: 0; font-size: 0; }
  .nova-install::before { content: "+"; font-size: 20px; }
  .nova-account { display:none; }
  .nova-chat { min-height: calc(100dvh - 68px); }
  .nova-intro { padding: 30px 16px 18px; }
  .nova-intro h2 { font-size: clamp(30px, 10vw, 45px); }
  .nova-intro p { font-size: 14px; }
  .nova-messages { padding: 4px 16px 20px; }
  .nova-message { max-width: 94%; padding: 14px 15px; font-size: 14px; }
  .nova-composer-wrap { padding: 12px 12px calc(14px + var(--nova-safe-bottom)); }
  .nova-composer { grid-template-columns: 1fr 52px; padding-left: 14px; }
  .nova-send { min-width: 52px; width: 52px; font-size: 0; }
  .nova-send::before { content: "↑"; font-size: 20px; }
  .nova-installer { padding:12px; }
  .nova-installer-card { padding:24px 20px; border-radius:18px; }
  .nova-installer-actions { display:grid; }
  .nova-install-action { justify-content:center; }
}

@media (prefers-reduced-motion: reduce) {
  .nova-messages { scroll-behavior: auto; }
}