*{box-sizing:border-box}body{margin:0;background:#0c0e15;color:#ececf4;font-family:Inter,Segoe UI,Arial,sans-serif;font-size:14px}.app-shell{display:flex;height:100vh;min-height:650px}.sidebar{width:310px;background:#141722;border-right:1px solid #262b39;display:flex;flex-direction:column;padding:27px 22px;gap:35px}.brand{display:flex;align-items:center;gap:13px;font-size:18px}.brand-icon,.sparkle{background:linear-gradient(140deg,#9879ff,#40d1d1);background-clip:text;color:transparent;font-size:36px}.brand small,.topbar small{display:block;font-size:12px;color:#969cab;margin-top:5px}.sidebar-section{flex:1}.section-heading{font-weight:700;color:#d1d3df;margin-bottom:13px}.sidebar p{color:#9aa1b2;line-height:1.6;margin:0 0 18px}.sidebar label{display:block;color:#bcbfcf;margin:12px 0 9px}.sidebar input[type=password],.sidebar input[type=file]{width:100%;background:#1d2230;color:#e8e8f2;border:1px solid #32394b;border-radius:9px;padding:11px;font:inherit}.sidebar input[type=file]{font-size:11px}.secondary-btn,.send-btn{background:#7960e8;color:white;border:0;padding:12px 16px;border-radius:10px;cursor:pointer;font-weight:650}.secondary-btn{width:100%;margin-top:12px}.secondary-btn:disabled,.send-btn:disabled{opacity:.5;cursor:wait}.text-btn{border:0;background:none;color:#a995ff;cursor:pointer;padding:5px}.sidebar-bottom{color:#8b91a3;font-size:11px;line-height:1.5}.dot{display:inline-block;width:7px;height:7px;border-radius:50%;background:#40c9a2;margin-right:7px}.document-list{margin:12px 0;max-height:31vh;overflow:auto}.doc-row{display:flex;justify-content:space-between;gap:8px;padding:9px 2px;border-bottom:1px solid #303443;font-size:12px;overflow-wrap:anywhere}.delete-btn{background:none;border:none;color:#e898a2;font-size:18px;cursor:pointer}.main{flex:1;min-width:0;display:flex;flex-direction:column}.topbar{height:82px;flex-shrink:0;border-bottom:1px solid #232838;display:flex;justify-content:space-between;align-items:center;padding:0 35px}.topbar strong{font-size:16px}.chat-area{flex:1;overflow-y:auto;padding:32px max(30px,calc((100% - 790px)/2));display:flex;flex-direction:column;gap:24px}.empty-state{margin:auto;text-align:center;max-width:550px}.sparkle{font-size:60px}.empty-state h1{font-size:31px;font-weight:650;margin:15px 0}.empty-state p{color:#999fb1;line-height:1.7}.examples{display:flex;gap:12px;justify-content:center;margin-top:28px;flex-wrap:wrap}.examples button{border:1px solid #373e54;border-radius:11px;background:#191e2d;color:#c9cee1;padding:13px;cursor:pointer}.bubble{max-width:100%;border:1px solid #252b3c;border-radius:14px;padding:17px 19px;white-space:pre-wrap;overflow-wrap:anywhere;line-height:1.65}.bubble.user{background:#25213b;margin-left:9%;border-color:#3e365f}.bubble.assistant{background:#161b29;margin-right:7%}.bubble-role{color:#b9a6ff;font-weight:700;font-size:12px;margin-bottom:10px}.sources{display:flex;flex-wrap:wrap;gap:7px;margin-top:15px;padding-top:12px;border-top:1px solid #313649}.source{background:#262c3c;color:#c6c3ff;border-radius:6px;padding:4px 8px;font-size:11px;text-decoration:none}.source:hover{text-decoration:underline}.composer{padding:18px max(30px,calc((100% - 790px)/2)) 20px;flex-shrink:0}.compose-box{background:#191e2c;border:1px solid #3c4154;border-radius:14px;padding:12px}.compose-box textarea{background:transparent;border:none;outline:none;color:#f4f4fa;width:100%;resize:vertical;font:inherit;line-height:1.6;min-height:60px}.compose-actions{display:flex;justify-content:space-between;align-items:center;gap:10px}.toggle{color:#aab0c2;font-size:12px;cursor:pointer}.toggle input{accent-color:#9176ff}.composer>small{display:block;text-align:center;color:#777f91;margin-top:12px}@media(max-width:770px){.app-shell{display:block;height:auto}.sidebar{width:100%;padding:18px;gap:15px;border-right:0}.sidebar-section{max-height:245px;overflow:auto}.sidebar-bottom{display:none}.main{height:78vh;min-height:520px}.chat-area{padding:20px}.composer{padding:14px}.topbar{padding:0 18px}.empty-state h1{font-size:23px}}

/* Responsive polish — October 2026 */
:root { color-scheme:dark; }
html,body { height:100%; }
body { -webkit-font-smoothing:antialiased; }
button,input,textarea { font-family:inherit; }
button { transition:background-color .18s ease, transform .18s ease, border-color .18s ease; }
button:hover:not(:disabled) { filter:brightness(1.13); }
button:focus-visible,input:focus-visible,textarea:focus-visible { outline:2px solid #a999ff; outline-offset:3px; }
.sidebar { flex:0 0 310px; overflow-y:auto; }
.brand strong { letter-spacing:-.3px; }
.sidebar-section { min-height:0; }
.sidebar label { font-size:12px; font-weight:600; }
.sidebar input[type=password]:focus,.sidebar input[type=file]:focus { border-color:#a994ff; }
.sidebar input[type=file]::file-selector-button { color:#eeeafb; background:#34304e; border:0; border-radius:5px; padding:7px 9px; margin-right:10px; cursor:pointer; }
#uploadStatus { overflow-wrap:anywhere; }
.topbar { gap:18px; }
.topbar>div { min-width:0; }
.topbar small { line-height:1.4; }
.topbar button { white-space:nowrap; }
.bubble { width:fit-content; min-width:min(240px,100%); max-width:92%; }
.bubble.user { align-self:flex-end; margin-left:0; }
.bubble.assistant { align-self:flex-start; margin-right:0; }
.bubble-content { white-space:pre-wrap; overflow-wrap:anywhere; }
.send-btn { min-width:88px; }
.compose-box:focus-within { border-color:#8876da; box-shadow:0 0 0 3px #8876da20; }
@media(min-width:771px) { .app-shell { height:100dvh; min-height:480px; } .main { min-height:0; } .chat-area { min-height:0; } }
@media(max-width:770px) {
 .app-shell { display:flex; flex-direction:column; min-height:100dvh; height:100dvh; overflow:hidden; }
 .sidebar { flex:none; width:100%; max-height:40dvh; overflow-y:auto; padding:14px 18px; gap:10px; border-bottom:1px solid #262b39; }
 .brand { font-size:16px; }
 .brand-icon { font-size:26px; }
 .sidebar-section { max-height:none; overflow:visible; }
 .sidebar-section>p { margin-bottom:8px; }
 .document-list { max-height:100px; }
 .main { flex:1; height:auto; min-height:0; }
 .topbar { height:66px; padding:0 18px; }
 .topbar small { font-size:11px; }
 .chat-area { min-height:0; padding:18px; }
 .composer { padding:12px 14px max(12px,env(safe-area-inset-bottom)); }
 .bubble { max-width:96%; }
}
@media(max-width:420px) {
 .sidebar { max-height:35dvh; }
 .topbar strong { font-size:14px; }
 .topbar small { max-width:200px; }
 .compose-actions { flex-wrap:wrap; }
 .send-btn { margin-left:auto; }
 .empty-state h1 { font-size:21px; }
}
@media(prefers-reduced-motion:reduce) { button { transition:none; } }

#loginPanel input { display:block; width:100%; margin:7px 0 12px; padding:11px; border-radius:10px; background:#181b2b; color:#f4f4ff; border:1px solid #46445e; }
#adminPanel[hidden],#loginPanel[hidden] {display:none!important;}
#adminPanel .doc-row {display:flex;align-items:center;gap:6px;flex-wrap:wrap;overflow-wrap:anywhere;}
#adminPanel .doc-row div {flex:1;min-width:120px;}