:root{
  --bg:#0b0d12; --bg2:#11141c; --bg3:#171b25; --line:#242938;
  --fg:#e7eaf3; --muted:#8b93a7; --accent:#6ea8ff; --accent2:#a78bfa;
  --ok:#4ade80; --warn:#fbbf24; --bad:#f87171;
  --radius:14px; --mono:ui-monospace,SFMono-Regular,Menlo,monospace;
}
*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0; background:var(--bg); color:var(--fg);
  font:15px/1.6 -apple-system,BlinkMacSystemFont,"Segoe UI",Inter,Roboto,sans-serif;
  -webkit-font-smoothing:antialiased;
}
button,input,textarea,select{font:inherit;color:inherit}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
.muted{color:var(--muted)}

/* ---------------- login ---------------- */
.login-body{display:grid;place-items:center;padding:24px}
.login{width:min(360px,100%);text-align:center;display:flex;flex-direction:column;gap:12px}
.login-mark{
  width:96px;height:96px;display:block;
  margin:0 auto 4px;align-self:center;   /* .login is a flex column — both centre it */
  filter:drop-shadow(0 6px 26px rgba(34,176,236,.35))
}
.login h1{margin:0;font-size:24px;letter-spacing:-.02em}
.login p{margin:0 0 8px}
.login input,.login button{
  padding:13px 16px;border-radius:var(--radius);border:1px solid var(--line);background:var(--bg2)
}
.login input:focus{outline:2px solid var(--accent);outline-offset:-1px}
.login button{background:var(--accent);color:#08111f;font-weight:650;border:0;cursor:pointer}
.login button:disabled{opacity:.5;cursor:not-allowed}
.err{color:var(--bad);font-size:14px;margin:0}

/* ---------------- layout ---------------- */
.app{display:flex;height:100dvh;overflow:hidden}
.side{
  width:270px;flex:0 0 270px;background:var(--bg2);border-right:1px solid var(--line);
  display:flex;flex-direction:column;transition:margin-left .2s ease
}
.side.hidden{margin-left:-270px}
.side-top{display:flex;gap:8px;padding:12px}
.new{
  flex:1;padding:10px;border-radius:10px;border:1px solid var(--line);
  background:var(--bg3);cursor:pointer;text-align:left
}
.new:hover{border-color:var(--accent)}
.convs{flex:1;overflow-y:auto;padding:0 8px 8px}
.conv{
  padding:9px 10px;border-radius:9px;cursor:pointer;display:flex;gap:8px;align-items:center;
  white-space:nowrap;overflow:hidden
}
.conv:hover{background:var(--bg3)}
.conv.on{background:var(--bg3);box-shadow:inset 2px 0 0 var(--accent)}
.conv span{overflow:hidden;text-overflow:ellipsis;flex:1}
.conv .del{opacity:0;color:var(--muted);padding:0 4px;background:none;border:0;cursor:pointer}
.conv:hover .del{opacity:1}
.side-foot{padding:12px;border-top:1px solid var(--line);display:flex;justify-content:space-between;font-size:13px}

.main{flex:1;display:flex;flex-direction:column;min-width:0}
.bar{
  display:flex;gap:10px;align-items:center;padding:10px 14px;
  border-bottom:1px solid var(--line);background:var(--bg)
}
.bar-title{flex:1;font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.icon{background:none;border:0;cursor:pointer;padding:6px 8px;border-radius:8px;color:var(--muted)}
.icon:hover{background:var(--bg3);color:var(--fg)}
.pin{
  background:var(--bg2);border:1px solid var(--line);border-radius:9px;padding:6px 8px;
  max-width:190px;font-size:13px
}
#closeSide{display:none}

/* ---------------- thread ---------------- */
.thread{flex:1;overflow-y:auto;padding:22px 16px 8px;scroll-behavior:smooth}
.empty{max-width:520px;margin:12vh auto;text-align:center;color:var(--muted)}
.empty-mark{
  width:84px;height:84px;display:block;margin:0 auto 4px;align-self:center;
  filter:drop-shadow(0 6px 24px rgba(34,176,236,.3))
}
.empty h2{color:var(--fg);margin:.4em 0 .3em;font-size:22px}

.msg{max-width:760px;margin:0 auto 20px}
.msg .who{
  font-size:12px;color:var(--muted);margin-bottom:6px;display:flex;gap:8px;
  align-items:center;flex-wrap:wrap
}
.badge{
  border:1px solid var(--line);background:var(--bg2);border-radius:999px;padding:1px 9px;font-size:11px
}
.badge.model{border-color:rgba(110,168,255,.45);color:var(--accent)}
.badge.cat{border-color:rgba(167,139,250,.45);color:var(--accent2)}
.bubble{padding:12px 15px;border-radius:var(--radius);background:var(--bg2);border:1px solid var(--line)}
.msg.user .bubble{background:linear-gradient(180deg,#1b2740,#182339);border-color:#2a3a5c}
.msg.user{max-width:760px}
.bubble p{margin:.55em 0}
.bubble p:first-child{margin-top:0}
.bubble p:last-child{margin-bottom:0}
.bubble pre{
  background:#0a0c11;border:1px solid var(--line);border-radius:10px;padding:12px;
  overflow-x:auto;font-family:var(--mono);font-size:13px
}
.bubble code{font-family:var(--mono);font-size:.9em;background:#0a0c11;padding:1px 5px;border-radius:5px}
.bubble pre code{background:none;padding:0}
.bubble ul,.bubble ol{margin:.5em 0;padding-left:1.35em}
.bubble table{border-collapse:collapse;width:100%;display:block;overflow-x:auto}
.bubble th,.bubble td{border:1px solid var(--line);padding:6px 9px;text-align:left}
.bubble img{max-width:100%;border-radius:10px}
.thumbs{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:8px}
.thumbs img{width:78px;height:78px;object-fit:cover;border-radius:9px;border:1px solid var(--line)}

.event{
  max-width:760px;margin:0 auto 18px;font-size:13px;color:var(--muted);
  border-left:2px solid var(--line);padding:2px 0 2px 12px
}
.event.handoff{border-left-color:var(--accent2)}
.event.warn{border-left-color:var(--warn);color:var(--warn)}
.event.bad{border-left-color:var(--bad);color:var(--bad)}
.event details summary{cursor:pointer;color:var(--accent2)}
.event details .brief{
  margin-top:8px;padding:10px 12px;background:var(--bg2);border:1px solid var(--line);
  border-radius:10px;color:var(--fg);max-height:320px;overflow:auto
}
.cursor{display:inline-block;width:7px;height:1.05em;background:var(--accent);
  vertical-align:-2px;animation:blink 1s steps(2) infinite}
@keyframes blink{50%{opacity:0}}

/* ---------------- composer ---------------- */
.composer{border-top:1px solid var(--line);padding:12px 16px 16px;background:var(--bg)}
.composer-row{
  max-width:760px;margin:0 auto;display:flex;gap:8px;align-items:flex-end;
  background:var(--bg2);border:1px solid var(--line);border-radius:var(--radius);padding:6px 6px 6px 4px
}
.composer-row:focus-within{border-color:var(--accent)}
#input{
  flex:1;background:none;border:0;resize:none;padding:8px 4px;max-height:220px;outline:none
}
.send{
  width:36px;height:36px;border-radius:10px;border:0;background:var(--accent);color:#08111f;
  font-size:17px;cursor:pointer;flex:0 0 auto
}
.send:disabled{opacity:.4;cursor:not-allowed}
.attachments{max-width:760px;margin:0 auto 8px;display:flex;gap:8px;flex-wrap:wrap}
.attachments figure{position:relative;margin:0}
.attachments img{width:64px;height:64px;object-fit:cover;border-radius:9px;border:1px solid var(--line)}
.attachments button{
  position:absolute;top:-6px;right:-6px;width:20px;height:20px;border-radius:50%;
  border:1px solid var(--line);background:var(--bg3);cursor:pointer;line-height:1;font-size:12px
}
.composer-note{max-width:760px;margin:6px auto 0;font-size:12px;color:var(--muted);min-height:1.2em}

/* ---------------- status page ---------------- */
.page{max-width:960px;margin:0 auto;padding:24px 16px 60px}
.page h1{font-size:24px;margin:0 0 4px}
.page h2{font-size:16px;margin:28px 0 10px;color:var(--muted);font-weight:600}
.card{background:var(--bg2);border:1px solid var(--line);border-radius:var(--radius);padding:14px;margin-bottom:10px}
.card.off{opacity:.5}
.card h3{margin:0 0 4px;font-size:15px;display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.meter{height:7px;background:var(--bg3);border-radius:4px;overflow:hidden;margin:9px 0 6px}
.meter i{display:block;height:100%;background:linear-gradient(90deg,var(--ok),var(--accent))}
.meter i.low{background:linear-gradient(90deg,var(--warn),var(--bad))}
.kv{font-size:13px;color:var(--muted);display:flex;gap:14px;flex-wrap:wrap}
.pill{font-size:11px;border-radius:999px;padding:1px 9px;border:1px solid var(--line)}
.pill.free{color:var(--ok);border-color:rgba(74,222,128,.4)}
.pill.paid{color:var(--warn);border-color:rgba(251,191,36,.4)}
.pill.down{color:var(--bad);border-color:rgba(248,113,113,.4)}
.back{display:inline-block;margin-bottom:16px}
pre.dump{
  background:var(--bg3);border:1px solid var(--line);border-radius:10px;padding:12px;
  overflow:auto;font-family:var(--mono);font-size:12px;max-height:420px
}

@media (max-width:820px){
  .side{position:fixed;z-index:20;height:100dvh;box-shadow:0 0 40px rgba(0,0,0,.6)}
  .side.hidden{margin-left:-270px}
  #closeSide{display:block}
  .pin{max-width:130px}
  .thread{padding:16px 12px 8px}
}

/* ---------------- waiting states ---------------- */
/* Three dots in the answer bubble from the moment you hit send. Before this the
   thread stayed empty through the routing call and looked frozen. */
.dots{display:inline-flex;gap:5px;align-items:center;height:1.2em}
.dots i{
  width:7px;height:7px;border-radius:50%;background:var(--accent);
  animation:bounce 1.2s ease-in-out infinite
}
.dots i:nth-child(2){animation-delay:.16s;background:var(--accent2)}
.dots i:nth-child(3){animation-delay:.32s}
@keyframes bounce{0%,60%,100%{opacity:.25;transform:translateY(0)}30%{opacity:1;transform:translateY(-4px)}}

.spin{
  display:inline-block;width:11px;height:11px;margin-right:7px;vertical-align:-1px;
  border:2px solid var(--line);border-top-color:var(--accent);border-radius:50%;
  animation:spin .7s linear infinite
}
@keyframes spin{to{transform:rotate(360deg)}}

@media (prefers-reduced-motion:reduce){
  .dots i,.spin{animation:none}
  .dots i{opacity:.6}
}

/* ---------------- usage chip ---------------- */
.usage{
  font-size:12px;color:var(--muted);border:1px solid var(--line);background:var(--bg2);
  border-radius:999px;padding:3px 10px;white-space:nowrap;text-decoration:none;flex:0 0 auto
}
.usage:hover{border-color:var(--accent);color:var(--fg);text-decoration:none}
.usage.low{color:var(--warn);border-color:rgba(251,191,36,.45)}
@media (max-width:820px){ .usage{display:none} }


/* ---------------- brand ---------------- */
.brand{
  display:flex;align-items:center;gap:10px;
  padding:14px 12px 6px;                 /* 12px matches .side-top, so the logo
                                            lines up with the New chat button */
  font-weight:650;font-size:16px;letter-spacing:-.01em
}
.brand img{
  width:28px;height:28px;flex:0 0 auto;display:block;
  filter:drop-shadow(0 2px 8px rgba(34,176,236,.35))
}