:root{color-scheme:dark;--bg:#212121;--surface:#2f2f2f;--surface-2:#171717;--surface-3:#262626;--text:#ececec;--muted:#b4b4b4;--muted-2:#8b8b8b;--border:rgba(255,255,255,.10);--border-2:rgba(255,255,255,.16);--accent:#10a37f;--danger:#ef4444;--shadow:0 18px 60px rgba(0,0,0,.38)}*{box-sizing:border-box}html,body{height:100%;margin:0;background:var(--bg);color:var(--text);font:16px/1.48 ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Arial,sans-serif}button,input,textarea{font:inherit}.hidden{display:none!important}button{touch-action:manipulation}.login{min-height:100dvh;display:grid;place-items:center;padding:24px;background:radial-gradient(circle at 50% -20%,rgba(255,255,255,.08),transparent 36%),var(--bg)}.login-card{width:min(420px,100%);padding:30px 26px;border:1px solid var(--border);border-radius:28px;background:#171717;box-shadow:var(--shadow)}.logo{width:54px;height:54px;border-radius:50%;display:grid;place-items:center;background:#fff;color:#111;font-weight:800;font-size:26px}.login h1{margin:20px 0 6px;font-size:28px;font-weight:650;letter-spacing:-.03em}.login p{margin:0 0 24px;color:var(--muted)}.login form{display:grid;gap:12px}.login input{width:100%;border:1px solid var(--border-2);background:#2f2f2f;color:var(--text);border-radius:16px;padding:14px 16px;outline:none}.login input:focus{border-color:rgba(255,255,255,.32)}.login button{border:0;border-radius:16px;background:#fff;color:#111;font-weight:650;padding:13px 16px}.error{min-height:22px;margin-top:12px;color:#ff8a8a;font-size:14px}.app{height:100dvh;display:grid;grid-template-rows:auto 1fr auto;background:var(--bg)}header{position:sticky;top:0;z-index:2;display:flex;align-items:center;justify-content:space-between;gap:12px;padding:calc(10px + env(safe-area-inset-top)) 12px 10px;border-bottom:1px solid rgba(255,255,255,.06);background:rgba(33,33,33,.86);backdrop-filter:blur(20px)}.title{font-size:16px;font-weight:650;letter-spacing:-.01em}.status{max-width:44vw;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;font-size:12px;color:var(--muted-2)}.actions{display:flex;gap:6px;flex-wrap:wrap;justify-content:flex-end}.actions button{border:1px solid var(--border);border-radius:999px;background:#2f2f2f;color:var(--text);font-size:13px;font-weight:520;padding:7px 10px}.actions button:active,.session-main:active,.session-actions button:active{transform:scale(.985)}main{overflow-y:auto;padding:18px 14px 24px;scroll-behavior:smooth}.msg{display:flex;margin:0 auto 18px;max-width:820px}.msg.user{justify-content:flex-end}.msg.assistant{justify-content:flex-start}.bubble{max-width:88%;white-space:pre-wrap;word-wrap:break-word}.user .bubble{background:#2f2f2f;border:1px solid rgba(255,255,255,.06);color:var(--text);border-radius:22px;padding:11px 15px}.assistant .bubble{background:transparent;color:var(--text);border:0;border-radius:0;padding:2px 0;max-width:100%}.system .bubble{max-width:100%;margin:auto;background:transparent;border:0;color:var(--muted-2);font-size:13px;text-align:center}.bubble pre{overflow:auto;background:#171717;border:1px solid var(--border);border-radius:14px;padding:12px;white-space:pre}.bubble code{background:#171717;border:1px solid rgba(255,255,255,.10);border-radius:7px;padding:1px 5px}.bubble pre code{border:0;padding:0}.composer{display:grid;grid-template-columns:1fr auto;gap:10px;padding:10px 12px calc(12px + env(safe-area-inset-bottom));background:linear-gradient(180deg,rgba(33,33,33,0),var(--bg) 24%)}.composer:before{content:'';position:fixed;left:0;right:0;bottom:0;height:calc(76px + env(safe-area-inset-bottom));pointer-events:none;background:var(--bg);z-index:-1}.composer textarea{width:100%;max-height:180px;resize:none;border:1px solid var(--border-2);outline:none;border-radius:24px;background:#2f2f2f;color:var(--text);padding:13px 16px;box-shadow:0 1px 0 rgba(255,255,255,.04) inset}.composer textarea::placeholder{color:#9b9b9b}.composer textarea:focus{border-color:rgba(255,255,255,.30)}.composer button{width:46px;height:46px;border:0;border-radius:50%;background:#fff;color:#111;font-weight:800;padding:0;font-size:23px}.composer button:disabled{opacity:.38}.typing{opacity:.75}.typing:after{content:'●';letter-spacing:3px;animation:pulse 1.1s infinite}@keyframes pulse{0%,100%{opacity:.35}50%{opacity:1}}a{color:#9ad3ff}.modal{position:fixed;inset:0;z-index:10;background:rgba(0,0,0,.48);backdrop-filter:blur(10px);display:grid;place-items:end center;padding:12px}.modal-card{width:min(760px,100%);max-height:min(82dvh,760px);overflow:hidden;border:1px solid var(--border);border-radius:24px;background:#171717;box-shadow:var(--shadow);display:grid;grid-template-rows:auto 1fr}.modal-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:16px 16px 12px;border-bottom:1px solid rgba(255,255,255,.07)}.modal-head strong{font-size:18px;font-weight:650;letter-spacing:-.02em}.modal-head small{display:block;color:var(--muted-2);font-size:12px;margin-top:2px}.modal-close{width:36px;height:36px;border-radius:50%;border:1px solid var(--border);background:#2f2f2f;color:var(--text);font-size:23px}.session-list{overflow:auto;padding:10px}.session-row{display:grid;grid-template-columns:1fr auto;gap:10px;align-items:center;border-radius:18px;padding:8px;margin:0 0 6px;background:transparent;border:1px solid transparent}.session-row:hover,.session-row.current{background:#212121;border-color:var(--border)}.session-main{min-width:0;display:grid;gap:2px;text-align:left;background:transparent;color:var(--text);border:0;border-radius:14px;padding:7px}.session-title{font-size:14px;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.session-preview{font-size:13px;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.session-meta{font-size:11px;color:var(--muted-2);font-family:ui-monospace,SFMono-Regular,Menlo,monospace;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.session-actions{display:flex;gap:6px}.session-actions button{border:1px solid var(--border);border-radius:999px;background:#2f2f2f;color:var(--text);font-size:12px;padding:7px 9px}.session-actions .delete{color:#ffb4b4}.empty{padding:24px;color:var(--muted);text-align:center}@media(min-width:800px){main{padding-left:max(22px,calc((100vw - 860px)/2));padding-right:max(22px,calc((100vw - 860px)/2))}.composer{padding-left:max(22px,calc((100vw - 860px)/2));padding-right:max(22px,calc((100vw - 860px)/2))}.modal{place-items:center}}@media(max-width:430px){.actions button{font-size:12px;padding:7px 8px}.session-row{grid-template-columns:1fr}.session-actions{padding-left:7px}.bubble{max-width:92%}.status{max-width:36vw}}