:root{--bg:#07101d;--panel:#0d1929;--panel2:#111f32;--line:#21324a;--text:#edf4ff;--muted:#91a3bb;--blue:#4b8cff;--blue2:#78a8ff;--green:#45d6a1;--red:#ff6878;--shadow:0 20px 60px #0005}*{box-sizing:border-box}body{margin:0;background:radial-gradient(circle at 85% 0,#11294d 0,transparent 34%),var(--bg);color:var(--text);font:15px/1.5 Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",sans-serif}button,input,textarea,select{font:inherit}.hidden{display:none!important}.eyebrow{margin:0 0 5px;color:var(--blue2);font-size:11px;font-weight:800;letter-spacing:.18em}.muted{color:var(--muted)}h1,h2,h3,p{margin-top:0}.brand-mark{display:grid;place-items:center;width:54px;height:54px;margin:auto;border-radius:18px;background:linear-gradient(135deg,var(--blue),#7b5cff);box-shadow:0 12px 30px #4b8cff55;font-weight:900}.brand-mark.small{width:38px;height:38px;margin:0;border-radius:12px}.login-shell{min-height:100vh;display:grid;place-items:center;padding:24px}.login-card{width:min(420px,100%);padding:40px;border:1px solid var(--line);border-radius:24px;background:#0b1727e8;box-shadow:var(--shadow);backdrop-filter:blur(14px);text-align:center}.login-card h1{font-size:34px;margin:14px 0 6px}.login-card label,.login-card input{text-align:left}.login-card label{display:block;color:var(--muted);margin:26px 0 8px}.login-card input{width:100%;margin-bottom:14px}.app{min-height:100vh;display:grid;grid-template-columns:260px 1fr}.sidebar{position:sticky;top:0;height:100vh;padding:24px 18px;border-right:1px solid var(--line);background:#081422}.brand{display:flex;gap:12px;align-items:center;margin-bottom:28px}.brand div{display:grid}.brand small{color:var(--muted)}.full{width:100%}nav{display:grid;gap:8px;margin-top:22px}.nav{display:flex;justify-content:space-between;border:0;border-radius:12px;padding:12px 14px;background:transparent;color:var(--muted);cursor:pointer;text-align:left}.nav:hover,.nav.active{background:#14243a;color:var(--text)}.nav span{color:var(--blue2)}.sidebar-bottom{position:absolute;bottom:20px;left:18px;right:18px;display:flex;align-items:center;justify-content:space-between}.status{font-size:12px;color:var(--green)}main{min-width:0}header{height:92px;padding:20px 32px;display:flex;align-items:center;gap:16px;border-bottom:1px solid var(--line);background:#07101dcc;backdrop-filter:blur(12px);position:sticky;top:0;z-index:5}header h2{margin:0;font-size:25px}header>div{flex:1}.content{padding:28px 32px}.toolbar{display:grid;grid-template-columns:minmax(260px,1fr) 190px 170px;gap:12px;margin-bottom:16px}input,textarea,select{border:1px solid var(--line);border-radius:12px;padding:12px 14px;background:#0c1929;color:var(--text);outline:0}input:focus,textarea:focus,select:focus{border-color:var(--blue);box-shadow:0 0 0 3px #4b8cff20}textarea{resize:vertical}.primary,.ghost,.danger,.icon-btn,.suggestions button{border:0;border-radius:11px;padding:11px 16px;cursor:pointer;color:var(--text)}.primary{background:linear-gradient(135deg,var(--blue),#6f67ff);font-weight:750;box-shadow:0 8px 22px #4b8cff28}.primary:hover{filter:brightness(1.08)}.ghost,.icon-btn,.suggestions button{background:#14243a}.danger{background:#421b28;color:#ff9baa}.icon-btn{padding:8px 12px;font-size:20px}.chips{display:flex;gap:8px;overflow:auto;padding:0 0 18px}.chip{white-space:nowrap;border:1px solid var(--line);border-radius:99px;padding:7px 12px;background:transparent;color:var(--muted);cursor:pointer}.chip.active,.chip:hover{border-color:var(--blue);color:var(--text);background:#4b8cff18}.notes-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:16px}.note-card{min-height:205px;padding:20px;border:1px solid var(--line);border-radius:18px;background:linear-gradient(145deg,#0e1c2e,#0b1726);cursor:pointer;transition:.2s;overflow:hidden}.note-card:hover{transform:translateY(-3px);border-color:#42699f;box-shadow:0 14px 35px #0004}.note-meta{display:flex;justify-content:space-between;gap:10px;color:var(--muted);font-size:12px}.note-card h3{margin:15px 0 9px;font-size:19px}.note-card .excerpt{display:-webkit-box;-webkit-line-clamp:4;-webkit-box-orient:vertical;overflow:hidden;color:#b8c7da}.tags{display:flex;gap:6px;flex-wrap:wrap;margin-top:15px}.tag{border-radius:99px;padding:4px 8px;background:#1a2b43;color:#9fc0ff;font-size:11px}.empty{padding:80px 24px;text-align:center;color:var(--muted)}.empty-icon{font-size:42px;color:var(--blue)}.ask-layout{display:grid;grid-template-columns:minmax(260px,360px) minmax(400px,1fr);gap:24px}.ask-intro,.chat-card{border:1px solid var(--line);border-radius:20px;background:var(--panel);padding:24px}.ask-intro h3{font-size:28px}.suggestions{display:grid;gap:10px;margin-top:28px}.suggestions button{text-align:left;color:#c9d8eb}.chat-card{min-height:620px;display:grid;grid-template-rows:1fr auto}.chat-log{overflow:auto;display:flex;flex-direction:column;gap:12px;padding-right:6px}.message{max-width:86%;padding:12px 15px;border-radius:16px;background:#17283e;white-space:pre-wrap}.message.user{align-self:flex-end;background:#285fc0}.message.loading{color:var(--muted)}.ask-form{display:grid;grid-template-columns:1fr auto;gap:10px;padding-top:16px;border-top:1px solid var(--line)}dialog{width:min(780px,calc(100% - 30px));padding:0;border:1px solid var(--line);border-radius:22px;background:var(--panel);color:var(--text);box-shadow:var(--shadow)}dialog::backdrop{background:#02060dcc;backdrop-filter:blur(4px)}#noteForm{padding:26px}.dialog-head,.dialog-actions{display:flex;align-items:center;justify-content:space-between}.dialog-head h3{font-size:24px;margin:0}.form-row{display:grid;grid-template-columns:1fr 2fr;gap:12px}#noteForm label{display:grid;gap:7px;margin:16px 0;color:#b9c8da}.dialog-actions{margin-top:20px}.error{min-height:20px;margin:8px 0 0;color:#ff8794}.toast{position:fixed;right:24px;bottom:24px;padding:12px 16px;border:1px solid #31624f;border-radius:12px;background:#143528;color:#b8ffe1;transform:translateY(120px);opacity:0;transition:.25s;z-index:20}.toast.show{transform:none;opacity:1}#mobileMenu{display:none}@media(max-width:850px){.app{grid-template-columns:1fr}.sidebar{position:fixed;z-index:20;width:260px;transform:translateX(-100%);transition:.2s}.sidebar.open{transform:none;box-shadow:var(--shadow)}#mobileMenu{display:block}header{padding:16px 18px}.content{padding:20px 16px}.toolbar{grid-template-columns:1fr 1fr}.toolbar input{grid-column:1/-1}.ask-layout{grid-template-columns:1fr}.chat-card{min-height:520px}}@media(max-width:520px){headerNewBtn{display:none}.toolbar,.form-row{grid-template-columns:1fr}.ask-form{grid-template-columns:1fr}.login-card{padding:28px 22px}.notes-grid{grid-template-columns:1fr}}