:root{
  --violet:#7c5cff;
  --violet-deep:#5b3fd6;
  --violet-soft:#efeaff;
  --accent-text:#5b3fd6;
  --lav:#f6f4ff;
  --ink:#1e1b31;
  --ink-soft:#6b6785;
  --line:#e6e2f5;
  --surface:#ffffff;
  --surface-2:#fbfaff;
  --glass:rgba(255,255,255,.8);
  --glass-2:rgba(255,255,255,.88);
  --hover:#e2daff;
  --danger:#e1556b;
  --danger-soft:#fdeef1;
  --ok:#2f9e6d;
  --bg:linear-gradient(165deg,#f2eeff 0%,#f8f6ff 42%,#fdfcff 100%);
  --overlay:rgba(30,27,49,.45);
  --aurora-op:.5;
  --radius:18px;
  --shadow-sm:0 2px 10px rgba(80,60,160,.07);
  --shadow-md:0 12px 34px rgba(80,60,160,.13);
  color-scheme:light;
}
:root[data-theme="dark"]{
  --violet:#8a6dff;
  --violet-soft:rgba(138,109,255,.18);
  --accent-text:#c1b0ff;
  --lav:#26213f;
  --ink:#ece9fb;
  --ink-soft:#a7a2c8;
  --line:#332e55;
  --surface:#1e1a35;
  --surface-2:#181530;
  --glass:rgba(30,26,53,.8);
  --glass-2:rgba(30,26,53,.9);
  --hover:#3a3263;
  --danger-soft:rgba(225,85,107,.16);
  --ok:#4cc38a;
  --bg:linear-gradient(165deg,#110f1f 0%,#151228 45%,#1a1630 100%);
  --overlay:rgba(5,4,12,.62);
  --aurora-op:.22;
  --shadow-sm:0 2px 10px rgba(0,0,0,.35);
  --shadow-md:0 12px 34px rgba(0,0,0,.45);
  color-scheme:dark;
}
*{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%}
body{
  font-family:'DM Sans',-apple-system,BlinkMacSystemFont,sans-serif;
  color:var(--ink);background:var(--bg);background-attachment:fixed;min-height:100vh;
}
.hidden{display:none !important}
button{font-family:inherit;cursor:pointer}
:focus-visible{outline:2px solid var(--violet);outline-offset:2px}

/* Aurora blobs */
.aurora{position:fixed;inset:0;overflow:hidden;pointer-events:none;z-index:0}
.aurora span{position:absolute;border-radius:50%;filter:blur(70px);opacity:var(--aurora-op)}
.aurora span:nth-child(1){width:440px;height:440px;background:#c9b8ff;top:-140px;left:-100px;animation:float1 22s ease-in-out infinite}
.aurora span:nth-child(2){width:360px;height:360px;background:#ffd6f0;bottom:-120px;right:-80px;animation:float2 26s ease-in-out infinite}
.aurora span:nth-child(3){width:300px;height:300px;background:#b8e8ff;top:40%;right:12%;animation:float1 30s ease-in-out infinite reverse}
:root[data-theme="dark"] .aurora span:nth-child(1){background:#5a3fd0}
:root[data-theme="dark"] .aurora span:nth-child(2){background:#9a3d86}
:root[data-theme="dark"] .aurora span:nth-child(3){background:#2a6aa0}
@keyframes float1{0%,100%{transform:translate(0,0)}50%{transform:translate(40px,30px)}}
@keyframes float2{0%,100%{transform:translate(0,0)}50%{transform:translate(-36px,-26px)}}
@media(prefers-reduced-motion:reduce){.aurora span{animation:none}}

/* Tool buttons (mic, attach) */
.tool-btn{width:36px;height:36px;flex-shrink:0;border:none;border-radius:50%;background:transparent;
  color:var(--ink-soft);display:flex;align-items:center;justify-content:center;transition:.15s}
.tool-btn svg{width:19px;height:19px}
.tool-btn:hover{background:var(--lav);color:var(--accent-text)}
.tool-btn.recording{color:#fff;background:#e1556b;animation:recPulse 1.2s ease-in-out infinite}
@keyframes recPulse{0%,100%{box-shadow:0 0 0 0 rgba(225,85,107,.45)}50%{box-shadow:0 0 0 7px rgba(225,85,107,0)}}

.attach-preview{display:flex;align-items:center;gap:10px;margin-bottom:8px;padding:8px 12px;
  background:var(--surface);border:1px solid var(--line);border-radius:14px;width:fit-content}
.attach-preview img{width:44px;height:44px;border-radius:8px;object-fit:cover}
#attach-remove{width:22px;height:22px;border:none;border-radius:50%;background:var(--lav);
  color:var(--ink-soft);font-size:1rem;line-height:1}
#attach-remove:hover{background:var(--hover);color:var(--ink)}

.model-badge,.model-badge-inline{border-radius:999px;background:var(--violet-soft);
  color:var(--accent-text);font-size:.72rem;font-weight:600;letter-spacing:.02em}
.model-badge{display:inline-block;padding:2px 10px}
.model-badge-inline{flex-shrink:0;padding:4px 10px;display:flex;align-items:center}

.amasaku{color:var(--accent-text);font-weight:600}
.bubble strong{font-weight:700}
.bubble em{font-style:italic}
.bubble-image{max-width:220px;border-radius:12px;display:block;margin-bottom:6px}

/* Buttons */
.btn{border:none;border-radius:999px;padding:11px 22px;font-size:.92rem;font-weight:500;
  display:inline-flex;align-items:center;justify-content:center;gap:8px;transition:.18s}
.btn.small{padding:8px 16px;font-size:.84rem}
.btn.primary{background:linear-gradient(135deg,var(--violet),var(--violet-deep));color:#fff;box-shadow:0 6px 18px rgba(124,92,255,.32)}
.btn.primary:hover{transform:translateY(-1px);box-shadow:0 10px 24px rgba(124,92,255,.4)}
.btn.primary:disabled{opacity:.65;cursor:not-allowed;transform:none}
.btn.ghost{background:var(--surface);color:var(--ink);border:1px solid var(--line);box-shadow:var(--shadow-sm)}
.btn.ghost:hover{background:var(--lav)}
.btn.danger-ghost{background:transparent;color:var(--danger);border:1px solid var(--danger)}
.btn.danger-ghost:hover{background:var(--danger-soft)}
.btn.full{width:100%}
.icon-btn{width:36px;height:36px;border-radius:50%;border:1px solid var(--line);background:var(--surface);
  color:var(--ink-soft);display:flex;align-items:center;justify-content:center;flex-shrink:0}
.icon-btn:hover{background:var(--lav);color:var(--ink)}
.icon-btn svg{width:18px;height:18px}
.lang-btn{width:auto;padding:0 12px;font-size:.76rem;font-weight:700;letter-spacing:.04em}
.i-sun{display:none}
:root[data-theme="dark"] .i-sun{display:block}
:root[data-theme="dark"] .i-moon{display:none}
.link-btn{background:none;border:none;color:var(--violet);font-weight:500;font-size:.9rem}

#send-btn.stopping{background:#e1556b !important}
#send-btn.stopping:hover{background:#c8455f !important}

/* Nav */
#navbar{position:relative;z-index:10;max-width:1240px;margin:20px auto 0;padding:9px 12px 9px 20px;
  display:flex;align-items:center;justify-content:space-between;height:62px;
  background:var(--glass);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border:1px solid var(--line);border-radius:999px;box-shadow:var(--shadow-md)}
.brand{display:flex;align-items:center;gap:8px;font-size:1.15rem;font-weight:700;color:var(--ink);text-decoration:none;letter-spacing:-.02em}
.brand-icon{width:32px;height:32px;border-radius:9px;object-fit:cover}
.nav-right,.nav-group,.nav-tools{display:flex;align-items:center;gap:10px}
.nav-tools{margin-right:4px}
#nav-name{font-weight:500;font-size:.92rem}
.avatar-btn{width:38px;height:38px;border-radius:50%;border:2px solid var(--surface);padding:0;overflow:hidden;
  background:linear-gradient(135deg,var(--violet),var(--violet-deep));color:#fff;font-weight:700;
  display:flex;align-items:center;justify-content:center;box-shadow:var(--shadow-sm)}
.avatar-btn img{width:100%;height:100%;object-fit:cover}

/* Auth */
.auth-wrap{position:relative;z-index:5;display:flex;justify-content:center;padding:56px 20px}
.auth-card{width:100%;max-width:420px;background:var(--surface);border:1px solid var(--line);
  border-radius:26px;padding:38px 34px;box-shadow:var(--shadow-md)}
.auth-card h2{font-size:1.55rem;text-align:center;letter-spacing:-.02em}
.auth-sub{text-align:center;color:var(--ink-soft);font-size:.93rem;margin:6px 0 24px}
.oauth-row{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.oauth-btn{display:flex;align-items:center;justify-content:center;gap:8px;padding:11px;color:var(--ink);
  border:1px solid var(--line);border-radius:12px;background:var(--surface);font-size:.9rem;font-weight:500;transition:.15s}
.oauth-btn:hover{background:var(--lav);border-color:var(--violet)}
.oauth-note{font-size:.82rem;color:var(--ink-soft);text-align:center;margin-top:10px}
.divider{display:flex;align-items:center;gap:12px;margin:22px 0 18px;color:var(--ink-soft);font-size:.82rem}
.divider::before,.divider::after{content:"";flex:1;height:1px;background:var(--line)}
.field-label{display:block;font-size:.83rem;font-weight:500;color:var(--ink-soft);margin-bottom:6px}
.field{width:100%;padding:12px 15px;margin-bottom:16px;border:1px solid var(--line);border-radius:12px;
  background:var(--surface-2);font-size:.95rem;font-family:inherit;color:var(--ink);transition:.15s}
.field:focus{outline:none;border-color:var(--violet);background:var(--surface);box-shadow:0 0 0 3px rgba(124,92,255,.18)}
.status{text-align:center;font-size:.88rem;min-height:1.3em;margin-top:12px;color:var(--ink-soft)}
.status.error{color:var(--danger)}
.status.ok{color:var(--ok)}
.switch-line{text-align:center;font-size:.9rem;color:var(--ink-soft);margin-top:14px}
.spinner{width:16px;height:16px;border:2px solid rgba(255,255,255,.45);border-top-color:#fff;
  border-radius:50%;animation:spin .7s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}

/* Modal + dashboard */
.modal{position:fixed;inset:0;background:var(--overlay);backdrop-filter:blur(3px);
  display:flex;align-items:center;justify-content:center;z-index:100;padding:20px}
.dash-card{position:relative;width:100%;max-width:620px;max-height:92vh;overflow-y:auto;
  background:var(--surface);border:1px solid var(--line);border-radius:24px;padding:28px;box-shadow:var(--shadow-md)}
.dash-x{position:absolute;top:16px;right:16px;font-size:1.3rem;line-height:1}
.dash-head{display:flex;align-items:center;gap:16px;flex-wrap:wrap;margin-bottom:20px;padding-right:40px}
#modal-avatar{width:68px;height:68px;border-radius:50%;overflow:hidden;flex-shrink:0;
  background:linear-gradient(135deg,var(--violet),var(--violet-deep));color:#fff;font-size:1.6rem;font-weight:700;
  display:flex;align-items:center;justify-content:center}
#modal-avatar img{width:100%;height:100%;object-fit:cover}
.dash-who{flex:1;min-width:140px}
.dash-who h3{font-size:1.2rem;letter-spacing:-.02em}
.dash-who p{color:var(--ink-soft);font-size:.85rem;margin-top:2px}
.tabs{display:flex;gap:4px;padding:4px;background:var(--lav);border-radius:999px;margin-bottom:20px}
.tab{flex:1;border:none;background:none;padding:9px 12px;border-radius:999px;font-size:.88rem;font-weight:500;color:var(--ink-soft);transition:.16s}
.tab.active{background:var(--surface);color:var(--accent-text);box-shadow:var(--shadow-sm)}
.pane-h{font-size:.78rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--ink-soft);margin:22px 0 10px}
.tab-pane>.pane-h:first-child{margin-top:0}
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(105px,1fr));gap:10px;margin-bottom:6px}
.stat{padding:14px 12px;border:1px solid var(--line);border-radius:14px;background:var(--surface-2);display:flex;flex-direction:column;gap:2px}
.stat strong{font-size:1.5rem;letter-spacing:-.02em;color:var(--accent-text)}
.stat span{font-size:.76rem;color:var(--ink-soft);line-height:1.3}
.chart{display:flex;align-items:flex-end;gap:10px;height:130px;padding:6px 4px 0}
.bar{flex:1;height:100%;display:flex;flex-direction:column;align-items:center;justify-content:flex-end;gap:6px}
.bar i{display:block;width:100%;max-width:34px;min-height:4px;border-radius:8px 8px 4px 4px;
  background:linear-gradient(180deg,var(--violet),var(--violet-deep));transition:height .5s ease}
.bar.empty i{background:var(--line)}
.bar span{font-size:.72rem;color:var(--ink-soft)}
.saved-list{display:flex;flex-direction:column;gap:10px}
.saved-item{padding:13px 15px;border:1px solid var(--line);border-radius:14px;background:var(--surface-2);
  display:flex;gap:10px;align-items:flex-start}
.saved-item p{flex:1;font-size:.92rem;line-height:1.5;white-space:pre-wrap;word-break:break-word}
.saved-item small{display:block;color:var(--ink-soft);font-size:.74rem;margin-top:4px}
.saved-item .act{flex-shrink:0;opacity:1}
.field-row{display:flex;gap:10px;align-items:flex-start}
.field-row .field{margin-bottom:0}
#pw-box .field{margin-bottom:10px}
.data-actions{display:flex;flex-wrap:wrap;gap:10px}
.dash-done{margin-top:24px}

/* Toast */
#toast{position:fixed;left:50%;bottom:28px;transform:translate(-50%,20px);z-index:300;
  padding:11px 20px;border-radius:999px;background:var(--ink);color:var(--surface);font-size:.88rem;font-weight:500;
  box-shadow:var(--shadow-md);opacity:0;pointer-events:none;transition:.25s}
#toast.show{opacity:1;transform:translate(-50%,0)}

/* Layout */
.layout{position:relative;z-index:5;max-width:1240px;margin:22px auto;padding:0 20px;
  display:grid;grid-template-columns:268px 1fr;gap:20px;align-items:start}

/* Sidebar */
#sidebar{background:var(--glass);backdrop-filter:blur(12px);border:1px solid var(--line);
  border-radius:var(--radius);padding:18px 14px;box-shadow:var(--shadow-sm);position:sticky;top:20px}
.new-chat{margin-bottom:14px}
.search-wrap{display:flex;align-items:center;gap:8px;padding:9px 13px;border:1px solid var(--line);
  border-radius:11px;background:var(--surface-2);color:var(--ink-soft);margin-bottom:16px}
.search-wrap input{border:none;background:none;outline:none;font-family:inherit;font-size:.88rem;width:100%;color:var(--ink)}
.side-label{font-size:.74rem;font-weight:700;letter-spacing:.09em;text-transform:uppercase;color:var(--ink-soft);margin:0 4px 8px}
.side-empty,.side-hint{font-size:.85rem;color:var(--ink-soft);padding:6px 4px;line-height:1.45}
#chat-list{display:flex;flex-direction:column;gap:2px;max-height:52vh;overflow-y:auto}
.chat-row{display:flex;align-items:center;border-radius:11px;position:relative;transition:.15s}
.chat-row:hover,.chat-row.active{background:var(--violet-soft)}
.chat-row.active .chat-name{color:var(--accent-text);font-weight:500}
.chat-name{flex:1;padding:9px 6px 9px 12px;font-size:.89rem;white-space:nowrap;overflow:hidden;
  text-overflow:ellipsis;cursor:pointer;color:var(--ink)}
.dots-btn{width:26px;height:26px;margin-right:6px;border:none;background:none;border-radius:7px;
  color:var(--ink-soft);display:flex;align-items:center;justify-content:center;opacity:0;flex-shrink:0}
.chat-row:hover .dots-btn,.dots-btn.open{opacity:1}
.dots-btn:hover{background:var(--hover);color:var(--ink)}
.menu{position:fixed;z-index:200;min-width:150px;padding:5px;
  background:var(--surface);border:1px solid var(--line);border-radius:13px;
  box-shadow:var(--shadow-md);display:none}
.menu.open{display:block;animation:pop .13s ease-out}
@keyframes pop{from{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:none}}
.menu-item{display:flex;align-items:center;gap:9px;padding:9px 11px;border-radius:8px;font-size:.87rem;color:var(--ink);cursor:pointer}
.menu-item:hover{background:var(--lav)}
.menu-item.danger{color:var(--danger)}
.menu-item.danger:hover{background:var(--danger-soft)}
.rename-input{flex:1;margin:3px 6px;padding:7px 10px;border:1px solid var(--violet);border-radius:9px;
  background:var(--surface);font-family:inherit;font-size:.88rem;color:var(--ink);outline:none}

/* Panel */
#panel{background:var(--glass-2);backdrop-filter:blur(12px);border:1px solid var(--line);
  border-radius:var(--radius);padding:22px 24px 18px;box-shadow:var(--shadow-md);display:flex;flex-direction:column}
.panel-head{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;
  padding-bottom:16px;border-bottom:1px solid var(--line);margin-bottom:16px}
.panel-head h1{font-size:1.2rem;font-weight:700;letter-spacing:-.02em}
.panel-sub{font-size:.85rem;color:var(--ink-soft);margin-top:3px}
.adapt-pill{display:inline-flex;align-items:center;gap:8px;padding:7px 14px;border-radius:999px;flex-shrink:0;
  background:var(--lav);border:1px solid var(--line);font-size:.8rem;font-weight:500;color:var(--ink-soft)}
.ping{width:7px;height:7px;border-radius:50%;background:var(--violet);
  box-shadow:0 0 0 0 rgba(124,92,255,.55);animation:ping 2s ease-out infinite}
@keyframes ping{70%{box-shadow:0 0 0 8px rgba(124,92,255,0)}100%{box-shadow:0 0 0 0 rgba(124,92,255,0)}}
.segmented{display:inline-flex;gap:4px;padding:4px;background:var(--lav);border-radius:999px}
.seg{border:none;background:none;padding:8px 18px;border-radius:999px;font-size:.84rem;
  font-weight:500;color:var(--ink-soft);transition:.16s}
.seg.active{background:var(--surface);color:var(--accent-text);box-shadow:var(--shadow-sm)}

/* Chat */
#chatbox{height:56vh;min-height:380px;overflow-y:auto;display:flex;flex-direction:column;gap:12px;padding:4px 4px 8px}
.empty-state{margin:auto;text-align:center;max-width:440px;padding:20px}
.empty-orb{width:76px;height:76px;border-radius:50%;margin:0 auto 18px;
  background:linear-gradient(135deg,#a48bff,#7c5cff 55%,#5b3fd6);box-shadow:0 10px 30px rgba(124,92,255,.38);
  animation:breathe 4s ease-in-out infinite}
@keyframes breathe{0%,100%{transform:scale(1)}50%{transform:scale(1.07)}}
.empty-state h2{font-size:1.35rem;margin-bottom:8px;letter-spacing:-.02em}
.empty-state p{color:var(--ink-soft);font-size:.94rem;line-height:1.55;margin-bottom:20px}
.chip-row{display:flex;flex-wrap:wrap;gap:8px;justify-content:center}
.chip{padding:9px 15px;border:1px solid var(--line);border-radius:999px;background:var(--surface);
  font-size:.84rem;color:var(--ink);transition:.15s}
.chip:hover{border-color:var(--violet);color:var(--accent-text);background:var(--violet-soft)}

.row{display:flex;flex-direction:column;max-width:76%;animation:rise .22s ease-out}
.row.user{align-self:flex-end;align-items:flex-end}
.row.bot{align-self:flex-start;align-items:flex-start}
@keyframes rise{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
.bubble{padding:12px 16px;border-radius:17px;font-size:.95rem;line-height:1.5;white-space:pre-wrap;word-break:break-word}
.row.user .bubble{background:linear-gradient(135deg,var(--violet),var(--violet-deep));color:#fff;border-bottom-right-radius:5px}
.row.bot .bubble{background:var(--surface);border:1px solid var(--line);border-bottom-left-radius:5px;box-shadow:var(--shadow-sm)}
.row.bot .bubble.err{border-color:var(--danger);color:var(--danger)}
.acts{display:flex;gap:6px;margin-top:5px;opacity:0;transition:.15s}
.row:hover .acts,.row:focus-within .acts{opacity:1}
@media(hover:none){.acts{opacity:1}}
.act{width:25px;height:25px;border-radius:7px;border:1px solid var(--line);background:var(--surface);
  color:var(--ink-soft);display:flex;align-items:center;justify-content:center}
.act:hover{background:var(--lav);color:var(--accent-text)}
.act.on{color:var(--violet)}
.act svg{width:13px;height:13px}

/* Thinking indicator */
.typing .bubble{display:flex;gap:5px;align-items:center;padding:14px 18px;flex-wrap:wrap}
.dot{width:7px;height:7px;border-radius:50%;background:#b6aee0;animation:bounce 1.25s infinite}
.dot:nth-child(2){animation-delay:.16s}
.dot:nth-child(3){animation-delay:.32s}
.think-text{margin-left:8px;font-size:.88rem;font-style:italic;color:var(--ink-soft);transition:opacity .25s}
.think-text.fade{opacity:0}
@keyframes bounce{0%,62%,100%{transform:translateY(0);opacity:.45}30%{transform:translateY(-5px);opacity:1}}

/* Composer */
#composer{display:flex;align-items:flex-end;gap:10px;padding:10px 10px 10px 20px;margin-top:6px;
  background:var(--surface);border:1px solid var(--line);border-radius:26px;box-shadow:var(--shadow-sm);transition:.18s}
#composer:focus-within{border-color:var(--violet);box-shadow:0 0 0 4px rgba(124,92,255,.14)}
#msg-box{flex:1;border:none;outline:none;resize:none;background:none;font-family:inherit;font-size:.97rem;
  line-height:1.5;padding:10px 0;max-height:150px;color:var(--ink)}
#msg-box::placeholder,.field::placeholder,.search-wrap input::placeholder{color:var(--ink-soft);opacity:.7}
#send-btn{width:42px;height:42px;flex-shrink:0;border:none;border-radius:50%;color:#fff;
  background:linear-gradient(135deg,var(--violet),var(--violet-deep));
  display:flex;align-items:center;justify-content:center;box-shadow:0 5px 15px rgba(124,92,255,.35);transition:.16s}
#send-btn svg{width:19px;height:19px}
#send-btn:hover:not(:disabled){transform:translateY(-1px)}
#send-btn:disabled{opacity:.5;cursor:not-allowed}
.composer-note{text-align:center;font-size:.76rem;color:var(--ink-soft);margin-top:10px;opacity:.85}

@media(max-width:900px){
  .layout{grid-template-columns:1fr}
  #sidebar{position:static}
  #chat-list{max-height:200px}
  .panel-head{flex-direction:column}
  .row{max-width:90%}
}
@media(max-width:600px){
  #nav-name{display:none}
  #navbar{padding-left:14px;margin:12px 12px 0}
  .nav-right,.nav-group,.nav-tools{gap:6px}
  .btn{padding:10px 16px}
  .dash-card{padding:22px 18px}
  .stat strong{font-size:1.25rem}
}