:root{--ink:#0e0c09;--ink2:#17130e;--ink3:#201a13;--paper:#f4efe6;--copper:#c9713a;--copper-hot:#e08a4c;--cream:#ece5d8;--mute:#a3988a;--line:rgba(236,229,216,.12);--red:#e0563a;--amber:#d9a441;--green:#5aa06a}
*{box-sizing:border-box}html,body{margin:0;height:100%}
body{background:var(--ink);color:var(--cream);font:15px/1.55 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif}
.serif{font-family:Georgia,"Times New Roman",serif;letter-spacing:-.01em}
.mono{font-family:ui-monospace,SFMono-Regular,Menlo,monospace}
a{color:var(--copper-hot)}
button{font-family:inherit}

/* ---------- login ---------- */
.login-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px;
  background:radial-gradient(1200px 700px at 70% -10%,rgba(201,113,58,.14),transparent 60%),var(--ink)}
.login-card{width:100%;max-width:400px;background:linear-gradient(160deg,var(--ink3),var(--ink2));border:1px solid var(--line);border-radius:18px;padding:34px 32px;box-shadow:0 40px 90px -40px #000}
.login-card .mark{display:flex;flex-direction:column;align-items:center;margin-bottom:20px}
.login-card .mark img{width:88px;filter:drop-shadow(0 8px 20px rgba(0,0,0,.5))}
.brandname{font-family:Georgia,serif;font-size:34px;font-weight:700;margin:12px 0 2px}
.brandname b{color:var(--copper-hot)}
.tagline{font:12px/1 ui-monospace,monospace;letter-spacing:.14em;color:var(--mute);text-transform:none}
.z0{color:var(--copper-hot);font-weight:800;font-size:1.22em;line-height:0}
label{display:block;font:11px/1 ui-monospace,monospace;letter-spacing:.08em;color:var(--mute);text-transform:uppercase;margin:16px 0 6px}
input{width:100%;background:rgba(0,0,0,.28);border:1px solid var(--line);border-radius:10px;padding:12px 13px;color:var(--cream);font-size:15px}
input:focus{outline:none;border-color:var(--copper)}
.btn{width:100%;margin-top:22px;cursor:pointer;border:none;border-radius:11px;padding:13px;font-size:15px;font-weight:600;
  color:#fff5ea;background:linear-gradient(120deg,#c9713a,#b25a28);box-shadow:0 12px 30px -12px rgba(201,113,58,.55)}
.btn:hover{transform:translateY(-1px)}
.err{margin-top:14px;color:#f2a08c;font-size:13px;text-align:center}
.lfoot{margin-top:20px;text-align:center;color:var(--mute);font:11px/1.4 ui-monospace,monospace}

/* ---------- app shell ---------- */
.app{display:flex;height:100vh}
.side{width:270px;flex:none;background:linear-gradient(180deg,var(--ink2),var(--ink));border-right:1px solid var(--line);display:flex;flex-direction:column;padding:18px 14px}
.side .top{display:flex;align-items:center;gap:10px;padding:4px 6px 14px}
.side .top img{width:40px}
.side .top .n{font-family:Georgia,serif;font-size:22px;font-weight:700}
.side .top .n b{color:var(--copper-hot)}
.side .top .n small{display:block;font:9px/1 ui-monospace,monospace;letter-spacing:.14em;color:var(--mute);text-transform:uppercase;margin-top:3px}
.side h4{font:10px/1 ui-monospace,monospace;letter-spacing:.1em;color:var(--mute);text-transform:uppercase;margin:16px 8px 8px}
.doc{all:unset;cursor:pointer;display:block;padding:8px 9px;border-radius:8px;font-size:13px;color:var(--cream)}
.doc:hover{background:rgba(236,229,216,.05)}
.doc .k{float:right;font:9px/1 ui-monospace,monospace;color:#f2a08c;background:rgba(224,86,58,.14);border:1px solid rgba(224,86,58,.3);padding:3px 5px;border-radius:5px}
.side .docs{overflow:auto;flex:1;margin:0 -4px;padding:0 4px}
.side .out{margin-top:auto;padding-top:12px;border-top:1px solid var(--line)}
.side .out a{font:11px/1 ui-monospace,monospace;color:var(--mute);text-decoration:none}
.side .out a:hover{color:var(--copper-hot)}

.chat{flex:1;display:flex;flex-direction:column;min-width:0}
.chhead{padding:14px 26px;border-bottom:1px solid var(--line);display:flex;align-items:center;gap:12px}
.chead img{width:34px}
.chead .ttl{font-family:Georgia,serif;font-size:18px}
.chead .sub{font:11px/1 ui-monospace,monospace;color:var(--mute);margin-top:2px}
.stream{flex:1;overflow:auto;padding:26px 26px 8px}
.thread{max-width:820px;margin:0 auto}
.msg{display:flex;gap:14px;margin:0 0 22px}
.msg .av{flex:none;width:34px;height:34px;border-radius:50%;overflow:hidden;background:var(--ink3);border:1px solid var(--line);display:flex;align-items:center;justify-content:center}
.msg .av img{width:34px}
.msg.user .av{background:linear-gradient(120deg,#3a3228,#25201a);color:var(--cream);font:13px/1 ui-monospace,monospace;font-weight:700}
.msg .body{flex:1;min-width:0}
.msg .who{font:11px/1 ui-monospace,monospace;letter-spacing:.06em;color:var(--mute);text-transform:uppercase;margin-bottom:5px}
.msg .txt{font-size:15px;line-height:1.62;color:#efe8db}
.msg .txt p{margin:0 0 10px}
.msg .txt strong{color:#fff}
.msg .txt code{font-family:ui-monospace,monospace;font-size:13px;background:rgba(236,229,216,.07);padding:1px 5px;border-radius:4px}
.msg .txt .cite{display:inline-block;font:11px/1 ui-monospace,monospace;color:var(--copper-hot);background:rgba(201,113,58,.1);border:1px solid var(--line);border-radius:20px;padding:3px 8px;margin:2px 3px 2px 0;cursor:pointer}

.composer{padding:14px 26px 22px;border-top:1px solid var(--line)}
.composer .box{max-width:820px;margin:0 auto;display:flex;gap:10px;align-items:flex-end;background:linear-gradient(160deg,var(--ink3),var(--ink2));border:1px solid var(--line);border-radius:16px;padding:10px 12px}
.composer textarea{flex:1;background:transparent;border:none;resize:none;color:var(--cream);font:15px/1.5 inherit;max-height:160px;outline:none}
.composer .send{flex:none;cursor:pointer;border:none;border-radius:11px;width:40px;height:40px;color:#fff5ea;background:linear-gradient(120deg,#c9713a,#b25a28);font-size:18px}
.composer .send:disabled{opacity:.4;cursor:default}
.suggest{max-width:820px;margin:0 auto 12px;display:flex;flex-wrap:wrap;gap:8px}
.suggest button{cursor:pointer;background:rgba(236,229,216,.05);border:1px solid var(--line);color:var(--cream);border-radius:20px;padding:8px 13px;font-size:13px}
.suggest button:hover{border-color:var(--copper)}
.hintline{max-width:820px;margin:0 auto 10px;color:var(--mute);font:11px/1.4 ui-monospace,monospace}

/* ---------- d0nna loader (avatar-based) ---------- */
.loader{display:inline-flex;align-items:center;gap:12px}
.loader .lav{position:relative;width:34px;height:34px;border-radius:50%;overflow:hidden}
.loader .lav img{width:34px;display:block;animation:breathe 2.2s ease-in-out infinite}
.loader .lav::after{content:"";position:absolute;top:0;left:-60%;width:60%;height:100%;
  background:linear-gradient(105deg,transparent,rgba(224,138,76,.55),transparent);
  animation:glint 1.5s linear infinite;mix-blend-mode:screen}
@keyframes glint{0%{left:-60%}100%{left:120%}}
@keyframes breathe{0%,100%{transform:scale(1)}50%{transform:scale(1.06)}}
.dots{display:inline-flex;gap:5px}
.dots i{width:7px;height:7px;border-radius:50%;background:var(--copper-hot);opacity:.4;animation:bounce 1.2s infinite}
.dots i:nth-child(2){animation-delay:.15s}.dots i:nth-child(3){animation-delay:.3s}
@keyframes bounce{0%,60%,100%{transform:translateY(0);opacity:.4}30%{transform:translateY(-5px);opacity:1}}
.loadword{font:12px/1 ui-monospace,monospace;color:var(--mute)}

/* full-screen boot loader */
.boot{position:fixed;inset:0;background:var(--ink);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:18px;z-index:99;transition:opacity .5s}
.boot img{width:96px;animation:breathe 2.2s ease-in-out infinite}
.boot .ring{position:absolute;width:150px;height:150px;border-radius:50%;border:2px solid transparent;border-top-color:var(--copper);border-right-color:rgba(201,113,58,.4);animation:spin 1s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.boot .bt{font:12px/1 ui-monospace,monospace;letter-spacing:.14em;color:var(--mute);text-transform:uppercase}

/* modal */
.modal{position:fixed;inset:0;background:rgba(4,3,2,.72);backdrop-filter:blur(3px);display:none;align-items:center;justify-content:center;padding:30px;z-index:60}
.modal.on{display:flex}
.sheet{background:var(--ink2);border:1px solid var(--line);border-radius:14px;max-width:820px;width:100%;max-height:86vh;overflow:auto;padding:24px 26px}
.sheet h3{margin:0 0 12px;font-family:Georgia,serif;font-size:20px}
.sheet pre{white-space:pre-wrap;font:13px/1.5 ui-monospace,monospace;color:#e6ded0;margin:0}
.x{float:right;cursor:pointer;color:var(--mute);font-size:22px;line-height:1}
@media(max-width:820px){.side{display:none}.stream{padding:18px}}