*{margin:0;padding:0;box-sizing:border-box}
:root{
--bg:#060504;
--bg-secondary:#0e0b08;
--bg2:rgba(14,11,8,.96);
--bg3:rgba(22,17,12,.98);
--bg-input:rgba(16,12,8,.92);
--bg-hover:rgba(91,200,245,.03);
--bg-glass:rgba(41,161,212,.03);
--text:#f0e8d8;
--text2:#9a8870;
--text3:#4a3e30;
--accent:#1a8fd1;
--accent2:#0f5fa8;
--accent-bright:#5bc8f5;
--accent-dim:rgba(26,143,209,.08);
--accent-glow:rgba(26,143,209,.25);
--merge:#29A1D4;
--merge-dim:rgba(41,161,212,.08);
--merge-glow:rgba(41,161,212,.25);
--search:#5bc8f5;
--search-dim:rgba(91,200,245,.08);
--search-glow:rgba(91,200,245,.25);
--border:rgba(41,161,212,.08);
--border2:rgba(41,161,212,.14);
--radius:16px;
--radius-sm:10px;
--radius-xs:7px;
--font:-apple-system,BlinkMacSystemFont,"SF Pro Display","Inter","Segoe UI",sans-serif;
--mono:"SF Mono","JetBrains Mono","Fira Code",Consolas,monospace;
--sidebar-w:272px;
--ease:cubic-bezier(.4,0,.2,1);
--t:all .25s cubic-bezier(.4,0,.2,1);
--tf:all .12s cubic-bezier(.4,0,.2,1);
}
.light{
--bg:#f8f3ec;
--bg2:rgba(252,248,242,.98);
--bg3:rgba(248,243,236,.99);
--bg-input:rgba(255,252,246,.95);
--bg-hover:rgba(26,143,209,.04);
--bg-glass:rgba(26,143,209,.025);
--text:#1a1208;
--text2:#6a5540;
--text3:#a89070;
--accent:#1a7fc1;
--accent2:#0d4f90;
--accent-dim:rgba(26,127,193,.06);
--accent-glow:rgba(26,127,193,.15);
--border:rgba(26,143,209,.1);
--border2:rgba(26,143,209,.15);
}
body{
font-family:var(--font);background:var(--bg);color:var(--text);
height:100vh;overflow:hidden;-webkit-font-smoothing:antialiased;
}
#bg-canvas{position:fixed;inset:0;z-index:0;pointer-events:none;opacity:.35}
.light #bg-canvas{opacity:.06}

#app{display:flex;height:100vh;position:relative;z-index:1}


/* ── sidebar ── */
#sidebar{
width:var(--sidebar-w);min-width:var(--sidebar-w);
background:linear-gradient(180deg,#0a0804 0%,#0e0c07 100%);
border-right:1px solid rgba(41,161,212,.12);
box-shadow:0 0 60px rgba(41,161,212,.06);
display:flex;flex-direction:column;height:100vh;overflow:hidden;
animation:sideIn .4s var(--ease);
}
@keyframes sideIn{from{opacity:0;transform:translateX(-16px)}}

.sidebar-header{padding:16px 16px 12px;display:flex;align-items:center;justify-content:space-between}
.logo-wrap{display:flex;align-items:center;gap:10px}
.logo-icon{
width:42px;height:42px;border-radius:12px;
background:linear-gradient(135deg,#1a8fd1,#0d4f90);
border:1px solid rgba(41,161,212,.3);
box-shadow:0 0 18px rgba(41,161,212,.5),0 0 40px rgba(15,95,168,.25);
display:flex;align-items:center;justify-content:center;
color:#fff;position:relative;overflow:hidden;
}
.logo-icon::after{
content:'';position:absolute;inset:0;
background:linear-gradient(135deg,rgba(200,240,255,.18),transparent);
}
.logo-icon img{width:28px;height:28px;object-fit:contain;position:relative;z-index:1}

@keyframes gShift{0%,100%{background-position:0% 50%}50%{background-position:100% 50%}}
.sidebar-header h1{
font-size:15px;font-weight:700;letter-spacing:-.2px;
background:linear-gradient(135deg,#ffffff,var(--accent-bright));
-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;
}

.sidebar-section{padding:10px 14px;border-bottom:1px solid var(--border)}
.sidebar-section-header{
display:flex;align-items:center;gap:7px;
font-size:10px;font-weight:700;text-transform:uppercase;
letter-spacing:1px;color:var(--text3);margin-bottom:8px;
}
#model-search{
width:100%;background:var(--bg-glass);border:1px solid var(--border);
border-radius:var(--radius-xs);padding:7px 11px;color:var(--text);
font-size:12px;font-family:var(--font);outline:none;transition:var(--tf);
}
#model-search::placeholder{color:var(--text3)}
#model-search:focus{border-color:var(--accent);background:var(--accent-dim)}

.model-list{flex:1;overflow-y:auto;padding:4px 8px}
.model-item{
display:flex;align-items:center;gap:8px;
padding:8px 10px;border-radius:var(--radius-xs);
cursor:pointer;transition:var(--tf);border:1px solid transparent;
margin-bottom:1px;
}
.model-item:hover{background:var(--bg-hover);border-color:var(--border)}
.model-item.active{background:var(--accent-dim);border-color:rgba(41,161,212,.15)}
.model-item-dot{width:7px;height:7px;border-radius:50%;flex-shrink:0}
.model-item-name{
  flex:1;font-size:12px;font-weight:600;
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
  color:var(--text2);
  transition:color .2s;
}
.model-item:hover .model-item-name {
  background:linear-gradient(90deg, var(--mc, var(--text)), color-mix(in srgb, var(--mc, var(--text)) 60%, #fff), var(--mc, var(--text)));
  background-size:200% auto;
  -webkit-background-clip:text;
  -webkit-text-fill-color:transparent;
  background-clip:text;
  animation:modelNameShimmer .8s linear;
}
.model-item.active .model-item-name{
  background:linear-gradient(90deg, var(--mc, var(--accent)), color-mix(in srgb, var(--mc, var(--accent)) 55%, #fff) 50%, var(--mc, var(--accent)));
  background-size:200% auto;
  -webkit-background-clip:text;
  -webkit-text-fill-color:transparent;
  background-clip:text;
  animation:modelNameShimmer 2.5s linear infinite;
}
@keyframes modelNameShimmer {
  0%   { background-position: 200% center }
  100% { background-position: -200% center }
}
.model-item-tier{
font-size:8px;font-weight:700;padding:1px 5px;border-radius:4px;
text-transform:uppercase;letter-spacing:.5px;
}
.tier-flagship{background:rgba(41,161,212,.1);color:#29A1D4}
.tier-reasoning{background:rgba(41,161,212,.1);color:#5bc8f5}
.tier-standard{background:rgba(160,110,40,.08);color:#1a8fd1}
.tier-fast{background:rgba(140,160,50,.08);color:#8a9a32}
.model-item.hidden{display:none}

/* merge / search sections */
#merge-section,#search-section{border-bottom:1px solid var(--border)}
.merge-header{cursor:pointer}
.merge-header:hover .merge-toggle{opacity:1}
.merge-toggle{
margin-left:auto;font-size:9px;font-weight:700;
padding:2px 8px;border-radius:6px;
background:var(--bg-glass);color:var(--text3);
transition:var(--tf);letter-spacing:.5px;
}
.merge-toggle.on{background:var(--merge-dim);color:var(--merge);box-shadow:0 0 12px var(--merge-dim)}
.merge-desc{font-size:10px;color:var(--text3);line-height:1.5;margin-top:6px;padding:0 2px;display:none}
.merge-desc.visible{display:block}
#merge-section.active{background:var(--merge-dim);border-color:rgba(41,161,212,.1)}
#merge-section.active .sidebar-section-header{color:var(--merge)}
#merge-section.active .merge-desc{color:var(--text2)}
.search-header{cursor:pointer}
.search-toggle{font-size:10px;font-weight:700;letter-spacing:.05em;color:var(--text3);margin-left:auto;padding:2px 8px;border-radius:10px;background:var(--bg-hover);transition:var(--t)}
.search-toggle.on{color:var(--accent);background:var(--accent-dim)}
.search-desc{font-size:10px;color:var(--text3);line-height:1.5;margin-top:6px;padding:0 2px;display:none}
.search-desc.visible{display:block}
#search-section.active{background:var(--search-dim);border-color:rgba(41,161,212,.1)}
#search-section.active .sidebar-section-header{color:var(--accent)}
#search-section.active .search-desc{color:var(--text2)}
.search-sources{margin:6px 0 10px;padding:10px 12px;background:var(--search-dim);border:1px solid rgba(41,161,212,.12);border-radius:var(--radius-xs)}
.search-sources-title{font-size:11px;font-weight:600;color:var(--accent);margin-bottom:6px;display:flex;align-items:center;gap:5px}
.search-source-link{display:block;font-size:11px;color:var(--accent-bright);text-decoration:none;padding:3px 0;opacity:.85;transition:var(--tf)}
.search-source-link:hover{opacity:1;text-decoration:underline}

/* chat list */
#chat-list{flex:1;overflow-y:auto;padding:6px 8px}
.chat-item{
padding:8px 10px;border-radius:var(--radius-xs);
cursor:pointer;font-size:12px;color:var(--text2);
transition:var(--tf);margin-bottom:1px;
display:flex;align-items:center;gap:8px;
border:1px solid transparent;
}
.chat-item:hover{background:var(--bg-hover);color:var(--text);border-color:var(--border)}
.chat-item.active{background:var(--accent-dim);color:var(--text);border-color:rgba(41,161,212,.12)}
.chat-item .chat-preview{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.chat-item .chat-time{font-size:10px;color:var(--text3);flex-shrink:0}
.chat-item .chat-delete{
opacity:0;width:20px;height:20px;border-radius:5px;
background:transparent;border:none;color:var(--text3);
cursor:pointer;display:flex;align-items:center;justify-content:center;
font-size:14px;transition:var(--tf);flex-shrink:0;
}
.chat-item:hover .chat-delete{opacity:.5}
.chat-item .chat-delete:hover{opacity:1;background:rgba(239,68,68,.1);color:#ef4444}

.sidebar-footer{padding:10px 12px;border-top:1px solid var(--border)}

.memory-indicator{
padding:8px 12px;margin:4px 8px;border-radius:var(--radius-xs);
background:var(--bg-glass);border:1px solid var(--border);
display:flex;align-items:center;gap:6px;
font-size:10px;color:var(--text3);cursor:pointer;
transition:var(--tf);
}
.memory-indicator:hover{border-color:var(--border2);color:var(--text2);background:var(--bg-hover)}
.memory-indicator svg{opacity:.5;flex-shrink:0}

.btn-primary{
display:flex;align-items:center;justify-content:center;gap:7px;
width:100%;padding:9px 14px;border-radius:var(--radius-sm);
background:linear-gradient(135deg,#1a8fd1,#0d4f90);
border:1px solid rgba(41,161,212,.22);
color:#fff;font-size:12px;font-weight:700;
cursor:pointer;transition:var(--t);
box-shadow:0 2px 12px rgba(41,161,212,.2);
}
.btn-primary:hover{
transform:translateY(-1px);
box-shadow:0 4px 20px rgba(41,161,212,.35);
background:linear-gradient(135deg,#5bc8f5,#1a8fd1);
}

/* ── main ── */
#main{flex:1;display:flex;flex-direction:column;min-width:0;overflow:hidden}

#chat-header{
padding:12px 20px;
border-bottom:1px solid var(--border);
display:flex;align-items:center;gap:12px;
background:rgba(10,8,4,.8);
backdrop-filter:blur(20px);
}
#header-model-badge{
font-size:11px;font-weight:700;padding:3px 10px;
border-radius:20px;border:1px solid var(--border2);
background:var(--accent-dim);color:var(--accent-bright);
letter-spacing:.3px;
}
#chat-title{
flex:1;font-size:13px;font-weight:600;color:var(--text2);
overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}
#theme-toggle{color:var(--text3)}

.online-counter{
    display:flex;
    align-items:center;
    gap:8px;
    padding:0 12px;
    font-size:12px;
    font-weight:700;
    color:var(--text2);
    margin-left:auto;
    user-select:none;
}
.online-dot{
    width:8px;
    height:8px;
    border-radius:50%;
    background:#22c55e;
    position:relative;
    flex-shrink:0;
    box-shadow:0 0 4px rgba(34,197,94,.35);
}

.online-dot::before{
    content:'';
    position:absolute;
    inset:-4px;
    border-radius:50%;
    border:2px solid rgba(34,197,94,.6);
    animation:onlinePulse 2s infinite;
}

@keyframes onlinePulse{
    0%{
        transform:scale(1);
        opacity:.4;
    }
    100%{
        transform:scale(2.8);
        opacity:0;
    }
}

/* ── messages ── */
#messages{flex:1;overflow-y:auto;padding:12px 0;scroll-behavior:smooth}
.message{
padding:6px 24px;
animation:msgIn .35s var(--ease);
}
@keyframes msgIn{from{opacity:0;transform:translateY(12px)}}
.message-inner{max-width:760px;margin:0 auto}
.msg-user .message-inner{display:flex;flex-direction:column;align-items:flex-end}
.msg-user .bubble{
display:inline-block;max-width:72%;
background:linear-gradient(135deg,rgba(41,161,212,.14),rgba(140,70,0,.1));
border:1px solid rgba(41,161,212,.15);
border-radius:18px 18px 4px 18px;
padding:10px 16px;font-size:14px;line-height:1.6;color:var(--text);
}
.msg-ai .message-inner{display:flex;gap:10px;align-items:flex-start}
.ai-avatar{
width:28px;height:28px;border-radius:9px;flex-shrink:0;
background:linear-gradient(135deg,#1a8fd1,#0d4f90);
border:1px solid rgba(41,161,212,.22);
box-shadow:0 0 12px rgba(41,161,212,.3);
display:flex;align-items:center;justify-content:center;
overflow:hidden;
}
.ai-avatar img{width:18px;height:18px;object-fit:contain}
.ai-content{flex:1;min-width:0;padding-top:4px}
.ai-content .model-label{
font-size:10px;font-weight:700;color:var(--text3);
text-transform:uppercase;letter-spacing:.8px;margin-bottom:6px;
}
.ai-content .prose{font-size:14px;line-height:1.7;color:var(--text)}

/* markdown */
.prose h1,.prose h2,.prose h3{font-weight:700;margin:1.2em 0 .5em;color:var(--text)}
.prose h1{font-size:20px}.prose h2{font-size:17px}.prose h3{font-size:15px}
.prose p{margin:.6em 0}
.prose ul,.prose ol{padding-left:20px;margin:.6em 0}
.prose li{margin:.3em 0}
.prose blockquote{border-left:3px solid var(--accent);padding-left:14px;color:var(--text2);margin:.8em 0;font-style:italic}
.prose code{
background:rgba(41,161,212,.08);border:1px solid rgba(41,161,212,.1);
border-radius:5px;padding:1px 6px;
font-family:var(--mono);font-size:12px;color:var(--accent-bright);
}
.prose pre{margin:.8em 0;border-radius:var(--radius-sm);overflow:hidden}
.prose pre code{
display:block;padding:16px;overflow-x:auto;
background:rgba(10,7,4,.8);border:1px solid var(--border2);border-radius:var(--radius-sm);
color:#c8e8ff;line-height:1.6;font-size:12px;white-space:pre;
}
.prose table{width:100%;border-collapse:collapse;margin:.8em 0;font-size:13px}
.prose th{background:var(--accent-dim);padding:8px 12px;text-align:left;font-weight:700;border:1px solid var(--border2);color:var(--accent-bright)}
.prose td{padding:8px 12px;border:1px solid var(--border);color:var(--text2)}
.prose a{color:var(--accent-bright);text-decoration:none}
.prose a:hover{text-decoration:underline}

/* ── spinner ── */
.spinner{
width:16px;height:16px;border-radius:50%;
border:2px solid rgba(41,161,212,.15);
border-top-color:var(--accent);
animation:spin .8s linear infinite;
}
@keyframes spin{to{transform:rotate(360deg)}}

/* typing */
.typing{display:inline-flex;gap:5px;padding:6px 0;align-items:center}
.typing span{
width:6px;height:6px;border-radius:50%;
background:var(--mc,var(--accent));
animation:bounce 1.4s ease-in-out infinite;
box-shadow:0 0 6px color-mix(in srgb,var(--mc,var(--accent)) 20%,transparent);
}
.typing span:nth-child(2){animation-delay:.12s}
.typing span:nth-child(3){animation-delay:.24s}
@keyframes bounce{0%,60%,100%{transform:translateY(0) scale(.7);opacity:.3}30%{transform:translateY(-6px) scale(1);opacity:1}}

/* ── input ── */
#input-area{padding:12px 24px 20px}
.input-wrap{
display:flex;gap:8px;align-items:flex-end;
background:var(--bg-input);backdrop-filter:blur(40px) saturate(1.5);
-webkit-backdrop-filter:blur(40px) saturate(1.5);
border:1px solid var(--border2);border-radius:var(--radius);
padding:6px 6px 6px 14px;transition:var(--t);
box-shadow:0 2px 16px rgba(0,0,0,.2);
}
.input-wrap:focus-within{
border-color:var(--accent);
box-shadow:0 0 0 3px var(--accent-dim),0 2px 20px rgba(0,0,0,.25);
}
.input-model-dot{
width:4px;min-height:16px;border-radius:3px;
background:var(--accent);flex-shrink:0;
align-self:stretch;margin:4px 0;transition:background var(--tf);
}
#user-input{
flex:1;background:transparent;border:none;color:var(--text);
font-size:14px;font-family:var(--font);resize:none;
max-height:180px;line-height:1.5;outline:none;padding:7px 0;
}
#user-input::placeholder{color:var(--text3)}

.btn-send{
width:34px;height:34px;border-radius:10px;
background:var(--bg3);border:1px solid var(--border);
color:var(--text3);cursor:pointer;
display:flex;align-items:center;justify-content:center;
transition:var(--t);flex-shrink:0;
}
.btn-send:hover:not(:disabled){color:#fff;background:linear-gradient(135deg,#1a8fd1,#0d4f90);transform:scale(1.06);box-shadow:0 0 14px var(--accent-glow)}
.btn-send:disabled{opacity:.2;cursor:not-allowed;transform:none}

.btn-stop{
width:34px;height:34px;border-radius:10px;
background:rgba(239,68,68,.08);border:1px solid rgba(239,68,68,.15);
color:#ef4444;cursor:pointer;
display:flex;align-items:center;justify-content:center;
transition:var(--t);flex-shrink:0;
}
.btn-stop:hover{background:rgba(239,68,68,.15);transform:scale(1.06)}
.hidden{display:none!important}

.input-footer{display:flex;justify-content:space-between;align-items:center;margin-top:6px}
.input-hint{font-size:10px;color:var(--text3)}
.input-hint kbd{
padding:1px 5px;border-radius:3px;
background:var(--bg-glass);border:1px solid var(--border);
font-family:var(--font);font-size:9px;
}
.input-status{font-size:10px;color:var(--merge);opacity:0;transition:var(--tf)}
.input-status.visible{opacity:1}

/* ── buttons ── */
.btn-icon{
width:30px;height:30px;border-radius:var(--radius-xs);
background:transparent;border:1px solid var(--border);
color:var(--text2);cursor:pointer;
display:flex;align-items:center;justify-content:center;
transition:var(--tf);
}
.btn-icon:hover{background:var(--bg-hover);color:var(--text);border-color:var(--border2)}

/* ── welcome ── */
.welcome{
display:flex;flex-direction:column;align-items:center;justify-content:center;
height:100%;text-align:center;padding:32px 20px;
animation:wIn .7s var(--ease);
}
@keyframes wIn{from{opacity:0;transform:translateY(24px) scale(.97);filter:blur(6px)}to{opacity:1;transform:none;filter:none}}
.welcome-icon{
width:72px;height:72px;border-radius:22px;
background:linear-gradient(135deg,#1a8fd1,#0d4f90);
border:1px solid rgba(41,161,212,.3);
box-shadow:0 0 35px rgba(41,161,212,.55),0 0 70px rgba(15,95,168,.25);
display:flex;align-items:center;justify-content:center;
position:relative;overflow:hidden;margin-bottom:20px;
}
.welcome-icon img{width:44px;height:44px;object-fit:contain;position:relative;z-index:1}
.welcome-icon::after{
content:'';position:absolute;inset:0;
background:linear-gradient(135deg,rgba(180,235,255,.2),transparent);
}
.welcome h2{
font-size:28px;font-weight:800;letter-spacing:-.4px;margin-bottom:6px;
background:linear-gradient(135deg,#ffffff,var(--accent-bright));
-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;
}
.welcome p{color:var(--text2);font-size:13px;max-width:380px;line-height:1.7}

.provider-grid{
display:grid;grid-template-columns:repeat(5,1fr);gap:8px;
margin-top:20px;max-width:400px;width:100%;
}
.provider-card{
padding:10px 8px;border-radius:var(--radius-sm);
background:var(--bg-glass);border:1px solid var(--border);
cursor:pointer;transition:var(--t);text-align:center;
}
.provider-card:hover{
border-color:var(--pc,var(--border2));
background:color-mix(in srgb,var(--pc,var(--accent)) 5%,transparent);
transform:translateY(-2px);box-shadow:0 6px 20px rgba(0,0,0,.25);
}
.provider-dot{width:8px;height:8px;border-radius:50%;margin:0 auto 6px}
.provider-name{font-size:10px;font-weight:700;color:var(--text2)}
.provider-count{font-size:9px;color:var(--text3);margin-top:2px}

.suggestion-grid{
display:grid;grid-template-columns:1fr 1fr;gap:8px;
margin-top:20px;max-width:440px;width:100%;
}
.suggest{
padding:12px 14px;border-radius:var(--radius-sm);
background:var(--bg-glass);border:1px solid var(--border);
cursor:pointer;transition:var(--t);text-align:left;
}
.suggest:hover{border-color:var(--border2);background:var(--bg-hover);transform:translateY(-1px);box-shadow:0 6px 20px rgba(0,0,0,.2)}
.suggest-title{font-size:12px;font-weight:600;color:var(--text);margin-bottom:3px}
.suggest-desc{font-size:10px;color:var(--text3);line-height:1.4}

.merge-card{
margin-top:20px;padding:14px 18px;border-radius:var(--radius-sm);
background:var(--merge-dim);border:1px solid rgba(41,161,212,.15);
cursor:pointer;transition:var(--t);max-width:440px;width:100%;
}
.merge-card:hover{transform:translateY(-1px);box-shadow:0 6px 20px rgba(41,161,212,.1)}
.merge-card-title{
font-size:13px;font-weight:700;color:var(--merge);
display:flex;align-items:center;gap:8px;margin-bottom:4px;
}
.merge-card-desc{font-size:11px;color:var(--text2);line-height:1.5}

.welcome .hint{margin-top:16px;font-size:10px;color:var(--text3)}

/* ── toast ── */
#toast-container{
position:fixed;bottom:70px;left:50%;transform:translateX(-50%);z-index:200;
display:flex;flex-direction:column;gap:6px;align-items:center;
}
.toast{
padding:8px 16px;border-radius:10px;
background:var(--bg3);backdrop-filter:blur(16px);
border:1px solid var(--border2);color:var(--text);font-size:12px;font-weight:500;
animation:tIn .25s var(--ease);box-shadow:0 6px 24px rgba(0,0,0,.35);
}
.toast.ok{border-color:rgba(34,197,94,.2);color:#22c55e}
.toast.err{border-color:rgba(239,68,68,.2);color:#ef4444}
@keyframes tIn{from{opacity:0;transform:translateY(8px) scale(.96)}to{opacity:1;transform:none}}
@keyframes tOut{from{opacity:1;transform:none}to{opacity:0;transform:translateY(-8px) scale(.96)}}

/* ── scrollbar ── */
::-webkit-scrollbar{width:4px}
::-webkit-scrollbar-track{background:transparent}
::-webkit-scrollbar-thumb{background:rgba(41,161,212,.1);border-radius:8px}
::-webkit-scrollbar-thumb:hover{background:rgba(41,161,212,.2)}

/* ── mobile ── */
.mobile-only{display:none!important}
#sidebar-overlay{
position:fixed;inset:0;background:rgba(0,0,0,.6);backdrop-filter:blur(4px);
z-index:99;opacity:0;pointer-events:none;transition:opacity .25s;
}
#sidebar-overlay.active{opacity:1;pointer-events:auto}

@media(max-width:768px){
.mobile-only{display:flex!important}
#sidebar{position:fixed;left:0;top:0;bottom:0;transform:translateX(-100%);transition:transform .3s var(--ease);box-shadow:0 0 60px rgba(0,0,0,.5);z-index:101}
#sidebar.open{transform:translateX(0)}
.message{padding:4px 14px}
#input-area{padding:8px 14px 14px}
.input-footer{display:none}
.provider-grid{grid-template-columns:repeat(3,1fr)}
.suggestion-grid{grid-template-columns:1fr}
}

/* ── ambient glow orbs ── */
.glow-orb{position:fixed;border-radius:50%;pointer-events:none;z-index:0;filter:blur(90px);animation:orbF 24s ease-in-out infinite}
@keyframes orbF{0%,100%{transform:translate(0,0) scale(1)}25%{transform:translate(30px,-40px) scale(1.08)}50%{transform:translate(-20px,20px) scale(.92)}75%{transform:translate(40px,30px) scale(1.04)}}

/* ── floating particles ── */
@keyframes floatUp{
0%{transform:translateY(0) translateX(0);opacity:0}
10%{opacity:.5}
90%{opacity:.5}
100%{transform:translateY(-140px) translateX(20px);opacity:0}
}

::selection{background:rgba(41,161,212,.25);color:#fff}

/* ── message layout (from original, re-themed) ── */
.message{
padding:6px 24px;margin-bottom:2px;
display:flex;gap:12px;
animation:msgIn .4s var(--ease) both;
}
.message.merge-mode{--mc:var(--merge)}.search-mode{--mc:var(--accent)}
@keyframes msgIn{from{opacity:0;transform:translateY(12px) scale(.99);filter:blur(3px)}to{opacity:1;transform:none;filter:none}}
.message:hover .msg-actions{opacity:1}

.msg-avatar{
width:30px;height:30px;border-radius:8px;
display:flex;align-items:center;justify-content:center;
flex-shrink:0;margin-top:1px;overflow:hidden;
}
.message.user .msg-avatar{background:linear-gradient(135deg,var(--accent2),var(--accent));color:#fff}
.message.assistant .msg-avatar{
background:linear-gradient(135deg,#1a8fd1,#0d4f90);
color:#fff;
box-shadow:0 0 12px rgba(41,161,212,.3);
}
.msg-avatar img{width:18px;height:18px;object-fit:contain}
.msg-body{flex:1;min-width:0;max-width:720px;position:relative}
.msg-role{
font-size:10px;font-weight:700;margin-bottom:3px;
text-transform:uppercase;letter-spacing:.5px;
display:flex;align-items:center;gap:6px;
color:var(--mc,var(--accent));
}
.msg-time{font-size:9px;color:var(--text3);font-weight:400;text-transform:none;letter-spacing:0}
.msg-content{font-size:14px;line-height:1.75;color:var(--text);white-space:pre-wrap;word-wrap:break-word}
.msg-content code{
background:var(--accent-dim);padding:1px 6px;border-radius:4px;
font-family:var(--mono);font-size:12px;color:var(--accent-bright);
border:1px solid rgba(41,161,212,.1);
}
.msg-content pre{
background:rgba(3,8,16,.92);backdrop-filter:blur(20px);
padding:0;border-radius:var(--radius-sm);
overflow:hidden;margin:10px 0;border:1px solid var(--border2);
}
.code-bar{
display:flex;align-items:center;justify-content:space-between;
padding:6px 12px;background:rgba(5,15,30,.65);border-bottom:1px solid var(--border);
font-size:10px;color:var(--text3);font-family:var(--font);
}
.code-copy{
padding:2px 8px;border-radius:5px;
background:transparent;border:1px solid var(--border);
color:var(--text3);font-size:10px;font-weight:600;
cursor:pointer;transition:var(--tf);font-family:var(--font);
}
.code-copy:hover{color:var(--text);border-color:var(--border2)}
.code-copy.ok{color:#22c55e;border-color:rgba(34,197,94,.3)}
.msg-content pre code{display:block;padding:14px 16px;overflow-x:auto;background:none;border:none;color:#c8e8ff;line-height:1.6}

.msg-content.streaming::after{content:'▍';color:var(--mc,var(--accent));animation:blink 1s step-end infinite}
@keyframes blink{0%,100%{opacity:1}50%{opacity:0}}

.msg-actions{position:absolute;right:0;top:0;display:flex;gap:3px;opacity:0;transition:var(--tf)}
.msg-act{
width:26px;height:26px;border-radius:6px;
background:var(--bg3);border:1px solid var(--border);
color:var(--text3);cursor:pointer;
display:flex;align-items:center;justify-content:center;
transition:var(--tf);font-size:11px;
}
.msg-act:hover{color:var(--text);border-color:var(--border2);background:var(--bg-hover)}
.msg-act.ok{color:#22c55e;border-color:rgba(34,197,94,.3)}

/* merge sources */
.merge-sources{margin:8px 0;padding:12px 14px;border-radius:var(--radius-sm);background:var(--merge-dim);border:1px solid rgba(41,161,212,.1)}
.merge-sources-title{font-size:10px;font-weight:700;color:var(--merge);text-transform:uppercase;letter-spacing:.8px;margin-bottom:10px;display:flex;align-items:center;gap:6px}
.merge-source{padding:8px 10px;border-radius:var(--radius-xs);background:var(--bg-glass);border:1px solid var(--border);margin-bottom:6px;font-size:12px;color:var(--text2);line-height:1.6;max-height:120px;overflow:hidden;position:relative;cursor:pointer;transition:var(--tf)}
.merge-source:hover{border-color:var(--border2)}
.merge-source.expanded{max-height:none}
.merge-source-name{font-size:10px;font-weight:700;color:var(--merge);margin-bottom:4px;display:flex;align-items:center;gap:5px}
.merge-source-name .dot{width:5px;height:5px;border-radius:50%;background:var(--merge)}

/* reasoning */
.reasoning-block{margin:8px 0;border-radius:var(--radius-sm);background:var(--accent-dim);border:1px solid rgba(41,161,212,.12);overflow:hidden;transition:var(--tf)}
.reasoning-block.streaming{border-color:rgba(41,161,212,.25);animation:rpulse 1.5s ease-in-out infinite}
@keyframes rpulse{0%,100%{box-shadow:0 0 0 0 rgba(41,161,212,0)}50%{box-shadow:0 0 12px 2px rgba(41,161,212,.1)}}
.reasoning-summary{padding:8px 12px;font-size:10px;font-weight:700;color:var(--accent-bright);cursor:pointer;display:flex;align-items:center;gap:6px;text-transform:uppercase;letter-spacing:.8px;transition:var(--tf);user-select:none}
.reasoning-summary:hover{color:var(--text)}
.reasoning-summary svg{opacity:.6;transition:transform .25s var(--ease)}
.reasoning-block[open] .reasoning-summary svg{transform:rotate(90deg)}
.reasoning-content{padding:0 12px 10px;font-size:12px;line-height:1.7;color:var(--text2);border-top:1px solid rgba(41,161,212,.08);padding-top:8px}
.reasoning-content code{background:var(--accent-dim);padding:1px 5px;border-radius:4px;font-family:var(--mono);font-size:11px;color:var(--accent-bright);border:1px solid rgba(41,161,212,.08)}

/* merge status */
.merge-status{padding:8px 0;font-size:11px;color:var(--merge);display:flex;align-items:center;gap:8px}
.merge-spinner{width:14px;height:14px;border:2px solid var(--merge-dim);border-top-color:var(--merge);border-radius:50%;animation:spin .8s linear infinite}

/* ── Text shimmer animation ── */
@keyframes textShimmer {
  0%   { background-position: 200% center }
  100% { background-position: -200% center }
}
.sidebar-header h1 {
  background: linear-gradient(90deg, #5bc8f5 0%, #ffffff 30%, #1a8fd1 50%, #ffffff 70%, #5bc8f5 100%);
  background-size: 200% auto;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: textShimmer 4s linear infinite;
}
.welcome h2 {
  background: linear-gradient(90deg, #5bc8f5 0%, #ffffff 30%, #1a8fd1 50%, #ffffff 70%, #5bc8f5 100%);
  background-size: 200% auto;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ── Character drop-in ── */
@keyframes charDrop {
  from { opacity: 0; transform: translateY(-18px) scale(.8); filter: blur(4px); }
  to   { opacity: 1; transform: translateY(0)    scale(1);  filter: blur(0);   }
}

/* ── Ripple on mouse move ── */
@keyframes rippleOut {
  0%   { width: 8px;   height: 8px;   opacity: .7; }
  100% { width: 120px; height: 120px; opacity: 0;  }
}