:root{
  --bg:#f7f7f8;--panel:#fff;--ink:#15171c;--muted:#6f7683;--line:#e4e6ea;
  --sidebar:#0c0f15;--sidebar-ink:#f4f6fa;--sidebar-muted:#8f98a8;
  --brand:#d946ef;--brand-2:#8b5cf6;--brand-3:#f472b6;--danger:#e5484d;
  --shadow:0 18px 50px rgba(15,17,22,.12);
}
*{box-sizing:border-box}
html,body{height:100%}
body{margin:0;background:var(--bg);color:var(--ink);font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;-webkit-font-smoothing:antialiased}
button,input,textarea,select{font:inherit}
button{cursor:pointer}
button:disabled{cursor:not-allowed;opacity:.45}
.hidden{display:none!important}
svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.9;stroke-linecap:round;stroke-linejoin:round}

.auth-screen{position:relative;min-height:100dvh;display:grid;place-items:center;overflow:hidden;padding:28px 20px;background:radial-gradient(circle at 12% 18%,rgba(217,70,239,.26),transparent 30%),radial-gradient(circle at 82% 78%,rgba(139,92,246,.3),transparent 34%),linear-gradient(160deg,#08090d 0%,#10131a 52%,#171021 100%)}
.auth-glow{position:absolute;border-radius:999px;filter:blur(90px);opacity:.5;pointer-events:none}
.auth-glow-a{width:340px;height:340px;top:-80px;left:-90px;background:#d946ef}
.auth-glow-b{width:360px;height:360px;right:-100px;bottom:-120px;background:#8b5cf6}
.auth-layout{position:relative;z-index:1;width:min(100%,1020px);display:grid;grid-template-columns:1.05fr .95fr;gap:36px;align-items:center}
.auth-story{max-width:480px;color:#fff;padding:18px}
.brand-lockup{display:flex;align-items:center;gap:10px}
.brand-mark{display:grid;place-items:center;width:42px;height:42px;border-radius:14px;background:linear-gradient(135deg,#f472b6,var(--brand),var(--brand-2));color:#fff;font-weight:900;font-size:22px;box-shadow:0 10px 30px rgba(217,70,239,.35)}
.brand-word{font-size:24px;font-weight:800;letter-spacing:-.03em}
.brand-lockup.compact .brand-mark{width:34px;height:34px;border-radius:11px;font-size:17px}
.brand-lockup.compact .brand-word{font-size:20px}
.auth-story h1{margin:40px 0 0;font-size:clamp(42px,5vw,66px);line-height:.98;letter-spacing:-.055em;font-weight:800}
.auth-story h1 span{background:linear-gradient(90deg,#f9a8d4,#d946ef,#a78bfa);-webkit-background-clip:text;background-clip:text;color:transparent}
.auth-story>p{margin:22px 0 0;max-width:410px;color:#aab2c3;font-size:16px;line-height:1.65}
.auth-points{margin-top:36px;display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.auth-points>div{padding:14px;border:1px solid rgba(255,255,255,.09);border-radius:14px;background:rgba(255,255,255,.035);backdrop-filter:blur(12px)}
.auth-points strong,.auth-points span{display:block}
.auth-points strong{font-size:15px}
.auth-points span{margin-top:4px;font-size:11px;line-height:1.35;color:#9aa3b5}
.auth-card{width:100%;max-width:430px;justify-self:end;padding:30px;border-radius:26px;background:rgba(255,255,255,.96);color:var(--ink);box-shadow:0 30px 90px rgba(0,0,0,.45);backdrop-filter:blur(22px)}
.auth-mobile-brand{display:none}
.auth-tabs{display:grid;grid-template-columns:1fr 1fr;gap:6px;padding:4px;margin-bottom:24px;border-radius:12px;background:#f0f1f5}
.auth-tab{border:0;border-radius:9px;padding:9px 12px;background:transparent;color:#6b7280;font-size:13px;font-weight:700}
.auth-tab.active{background:#fff;color:var(--ink);box-shadow:0 2px 8px rgba(15,23,42,.08)}
.auth-card h2{margin:0;font-size:25px;letter-spacing:-.03em}
.auth-subtitle{margin:7px 0 22px;color:var(--muted);font-size:13px}
.auth-form{display:grid;gap:14px}
.auth-form label{display:grid;gap:7px;font-size:12px;font-weight:700;color:#3f4652}
.auth-form input{width:100%;height:46px;border:1px solid #dfe3ea;border-radius:12px;padding:0 13px;font-size:14px;outline:none;transition:border-color .15s,box-shadow .15s}
.auth-form input:focus{border-color:#c084fc;box-shadow:0 0 0 4px rgba(168,85,247,.1)}
.button{border:0;border-radius:12px;height:44px;display:inline-flex;align-items:center;justify-content:center;gap:9px;font-weight:700;font-size:13px}
.button-primary{background:linear-gradient(100deg,var(--brand),var(--brand-2));color:#fff;box-shadow:0 12px 26px -12px rgba(168,85,247,.85)}
.button-primary:hover{filter:brightness(1.04)}
.button-ghost{border:1px solid #e0e3ea;background:#fff;color:#262b35}
.button-ghost:hover{background:#fafafa}
.button-link{background:transparent;color:#8b5cf6;width:100%;margin-top:8px}
.auth-submit{margin-top:4px;height:48px}
.auth-divider{display:flex;align-items:center;gap:12px;margin:18px 0;color:#a0a6b1;font-size:11px}
.auth-divider::before,.auth-divider::after{content:"";flex:1;height:1px;background:#eceef2}
.auth-google svg{width:18px;height:18px}
.auth-status{min-height:18px;margin-top:10px;font-size:12px;color:var(--danger)}
.auth-status.success{color:#15803d}
.auth-legal{margin:20px 0 0;padding-top:18px;border-top:1px solid #eef0f4;color:#9aa0ab;font-size:10.5px;line-height:1.55;text-align:center}

.app{height:100dvh;display:grid;grid-template-columns:280px minmax(0,1fr);overflow:hidden;background:var(--bg)}
.sidebar{min-height:0;display:flex;flex-direction:column;background:radial-gradient(circle at 20% 0%,rgba(217,70,239,.1),transparent 35%),var(--sidebar);color:var(--sidebar-ink);padding:18px 14px 14px;border-right:1px solid rgba(255,255,255,.055)}
.sidebar-head{display:flex;align-items:center;justify-content:space-between;padding:2px 4px 18px}
.sidebar-close{display:none}
.new-chat{display:flex;align-items:center;justify-content:flex-start;gap:9px;width:100%;height:44px;padding:0 13px;border:1px solid rgba(255,255,255,.09);border-radius:12px;background:linear-gradient(100deg,rgba(217,70,239,.95),rgba(139,92,246,.95));color:#fff;font-weight:750;font-size:13px;box-shadow:0 12px 26px -16px rgba(217,70,239,.9)}
.new-chat svg{width:17px;height:17px;stroke-width:2.2}
.sidebar-search{position:relative;margin:14px 0 8px}
.sidebar-search svg{position:absolute;left:12px;top:50%;width:16px;height:16px;transform:translateY(-50%);color:#737d90;stroke-width:1.8}
.sidebar-search input{width:100%;height:38px;border:1px solid rgba(255,255,255,.08);border-radius:10px;background:rgba(255,255,255,.04);color:#e8eaf0;padding:0 12px 0 37px;outline:none;font-size:12px}
.sidebar-search input::placeholder{color:#6f788a}
.sidebar-search input:focus{border-color:rgba(217,70,239,.4);background:rgba(255,255,255,.06)}
.conversation-list{flex:1;min-height:0;overflow-y:auto;padding:4px 0 12px;scrollbar-width:thin;scrollbar-color:#2b3242 transparent}
.conversation-item{width:100%;display:block;text-align:left;border:0;border-radius:10px;background:transparent;color:#c8ceda;padding:9px 10px;margin-bottom:2px}
.conversation-item:hover{background:rgba(255,255,255,.055)}
.conversation-item.active{background:rgba(255,255,255,.09);color:#fff}
.conversation-item strong{display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:12.5px;font-weight:650}
.conversation-item small{display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;margin-top:3px;color:#798396;font-size:10.5px}
.conversation-empty{color:#6f788a;font-size:11.5px;line-height:1.6;padding:14px 10px}
.search-results{max-height:240px;overflow-y:auto;margin:2px 0 8px;padding:6px;border:1px solid rgba(255,255,255,.08);border-radius:12px;background:#131821}
.search-result{display:block;width:100%;border:0;border-radius:8px;background:transparent;color:#dfe3eb;text-align:left;padding:8px;font-size:11.5px;line-height:1.45}
.search-result:hover{background:rgba(255,255,255,.06)}
.search-result strong{display:block;color:#fff;font-size:12px;margin-bottom:2px}
.search-result mark{background:rgba(217,70,239,.35);color:#fff;border-radius:3px}
.sidebar-foot{padding-top:12px;border-top:1px solid rgba(255,255,255,.07)}
.wallet-pill{display:flex;align-items:center;gap:9px;padding:9px 10px;border-radius:12px;background:linear-gradient(120deg,rgba(217,70,239,.13),rgba(139,92,246,.13));border:1px solid rgba(217,70,239,.18)}
.wallet-icon{display:grid;place-items:center;width:28px;height:28px;border-radius:9px;background:linear-gradient(135deg,#f472b6,var(--brand-2));color:#fff;font-size:12px;font-weight:900}
.wallet-pill small,.wallet-pill strong{display:block}
.wallet-pill small{color:#8f98a9;font-size:9.5px}
.wallet-pill strong{color:#fff;font-size:13px;margin-top:1px}
.monthly-usage{color:#747e90;font-size:10px;margin:9px 3px 12px}
.user-card{display:flex;align-items:center;gap:9px;padding:8px 4px 2px}
.user-avatar{display:grid;place-items:center;width:32px;height:32px;flex:0 0 32px;border-radius:50%;background:#262d3a;color:#e9ebf1;font-size:12px;font-weight:800}
.user-meta{min-width:0;flex:1}
.user-meta strong{display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:#e9ebf1;font-size:11.5px}
.user-meta small{display:block;color:#788294;font-size:9.5px;margin-top:2px}
.icon-button{display:grid;place-items:center;width:34px;height:34px;flex:0 0 34px;border:0;border-radius:9px;background:transparent;color:#7d8698}
.icon-button:hover{background:rgba(255,255,255,.07);color:#fff}
.icon-button svg{width:17px;height:17px;stroke-width:1.8}
.logout-button{color:#7f8795}.logout-button:hover{color:#fff}

.main{min-width:0;min-height:0;display:flex;flex-direction:column;background:var(--bg)}
.chat-header{height:62px;flex:0 0 62px;display:flex;align-items:center;gap:10px;padding:0 20px;border-bottom:1px solid rgba(20,22,28,.06);background:rgba(247,247,249,.88);backdrop-filter:blur(16px)}
.menu-button{display:none;color:#3e4450}
.chat-heading{min-width:0;flex:1}
.chat-heading h1{margin:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:15px;font-weight:750;letter-spacing:-.015em}
.chat-heading p{margin:2px 0 0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:#8b919c;font-size:10.5px}
.header-actions{display:flex;align-items:center;gap:5px}
.header-actions .icon-button{color:#6b7280}
.header-actions .icon-button:hover{background:#eceef3;color:#111827}
.model-select{height:34px;border:1px solid #e1e4ea;border-radius:9px;background:#fff;color:#3f4652;padding:0 26px 0 9px;font-size:11.5px;font-weight:650;outline:none}
.mode-badge{padding:4px 7px;border-radius:6px;background:#fef3c7;color:#92400e;font-size:9px;font-weight:800;letter-spacing:.02em;text-transform:uppercase}
.chat-scroll{flex:1;min-height:0;overflow-y:auto;scroll-behavior:smooth}
.messages{width:min(780px,100%);margin:0 auto;padding:34px 24px 18px}
.welcome{width:min(760px,100%);margin:0 auto;padding:8vh 24px 30px;text-align:center}
.welcome-mark{display:grid;place-items:center;width:54px;height:54px;margin:0 auto 17px;border-radius:17px;background:linear-gradient(135deg,#f472b6,var(--brand),var(--brand-2));color:#fff;font-size:26px;font-weight:900;box-shadow:0 16px 38px -18px rgba(217,70,239,.8)}
.welcome h2{margin:0;font-size:27px;letter-spacing:-.04em}
.welcome>p{margin:8px 0 0;color:var(--muted);font-size:13px}
.suggestions{display:grid;grid-template-columns:1fr 1fr;gap:9px;margin-top:28px;text-align:left}
.suggestions button{min-height:88px;display:flex;flex-direction:column;align-items:flex-start;justify-content:center;gap:4px;border:1px solid #e3e6ec;border-radius:14px;background:#fff;color:var(--ink);padding:14px 15px;box-shadow:0 1px 2px rgba(16,24,40,.02);transition:transform .15s,border-color .15s,box-shadow .15s}
.suggestions button:hover{transform:translateY(-1px);border-color:#d8b4fe;box-shadow:0 10px 24px -20px rgba(139,92,246,.7)}
.suggestions span{color:#a855f7;font-size:9.5px;font-weight:800;text-transform:uppercase;letter-spacing:.06em}
.suggestions strong{font-size:12.5px}
.suggestions small{color:#8b919c;font-size:10.5px;line-height:1.35}

.message{display:flex;align-items:flex-start;gap:12px;margin-bottom:28px;animation:message-in .24s ease-out}
.message.user{flex-direction:row-reverse}
.message-avatar{display:grid;place-items:center;width:30px;height:30px;flex:0 0 30px;border-radius:9px;background:linear-gradient(135deg,#f472b6,var(--brand-2));color:#fff;font-size:12px;font-weight:900}
.message.user .message-avatar{background:#242a35;color:#dfe3eb;border-radius:50%}
.message-inner{min-width:0;max-width:min(680px,calc(100% - 42px))}
.message.user .message-inner{display:flex;flex-direction:column;align-items:flex-end}
.message-name{margin:0 0 4px;color:#8b919c;font-size:10px;font-weight:650}
.message.user .message-name{text-align:right}
.message-body{color:#20242c;font-size:14px;line-height:1.68;word-break:break-word}
.message.user .message-body{padding:10px 14px;border-radius:16px 16px 5px 16px;background:#e9e7ef;white-space:pre-wrap}
.message.assistant .message-body{padding-top:1px}
.message-body>:first-child{margin-top:0}
.message-body>:last-child{margin-bottom:0}
.message-body p{margin:0 0 11px}
.message-body ul,.message-body ol{margin:0 0 12px;padding-left:22px}
.message-body li{margin:4px 0}
.message-body h1,.message-body h2,.message-body h3{margin:18px 0 8px;letter-spacing:-.02em;line-height:1.3}
.message-body h1{font-size:20px}.message-body h2{font-size:17px}.message-body h3{font-size:15px}
.message-body blockquote{margin:12px 0;padding:8px 13px;border-left:3px solid #d8b4fe;background:#faf7ff;color:#5b546b;border-radius:0 8px 8px 0}
.message-body pre{position:relative;overflow-x:auto;margin:13px 0;padding:13px 14px;border-radius:12px;background:#111722;color:#e8eaf1;font-size:12px;line-height:1.55}
.message-body code{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.9em;background:#f1f0f5;border-radius:4px;padding:1px 4px}
.message-body pre code{background:transparent;padding:0;color:inherit}
.message-body table{width:100%;border-collapse:collapse;margin:12px 0;font-size:12px}
.message-body th,.message-body td{border:1px solid #e6e8ee;padding:7px 9px;text-align:left}
.message-body th{background:#f7f7f9;font-weight:700}
.message-body a{color:#7c3aed;text-decoration:underline;text-underline-offset:2px}
.message-attachments{display:flex;flex-wrap:wrap;gap:6px;margin-top:8px}
.message.user .message-attachments{justify-content:flex-end}
.message-attachment{padding:4px 8px;border-radius:7px;background:#fff;border:1px solid #e2e5eb;color:#626977;font-size:9.5px}
.message-meta{margin-top:5px;color:#9ba1ad;font-size:9.5px}
.typing-cursor::after{content:"▍";color:#a855f7;animation:blink .9s step-end infinite}
@keyframes blink{50%{opacity:.2}}
@keyframes message-in{from{opacity:0;transform:translateY(5px)}to{opacity:1;transform:translateY(0)}}

.composer-wrap{flex:0 0 auto;width:min(820px,100%);margin:0 auto;padding:8px 18px calc(12px + env(safe-area-inset-bottom))}
.attachment-list{display:flex;flex-wrap:wrap;gap:6px;padding:0 2px 7px}
.attachment-chip{display:flex;align-items:center;gap:6px;border:1px solid #e0e3ea;background:#fff;border-radius:9px;padding:5px 6px 5px 9px;color:#555d6a;font-size:10.5px;max-width:260px}
.attachment-chip span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.attachment-chip button{border:0;background:transparent;color:#9aa0ab;font-size:14px;line-height:1;padding:0 2px}
.composer{display:flex;align-items:flex-end;gap:4px;min-height:54px;padding:6px;border:1px solid #dfe2e9;border-radius:17px;background:#fff;box-shadow:0 12px 30px -24px rgba(15,23,42,.45)}
.composer:focus-within{border-color:#d8b4fe;box-shadow:0 0 0 4px rgba(168,85,247,.07),0 12px 30px -24px rgba(15,23,42,.45)}
.composer textarea{flex:1;min-height:40px;max-height:190px;resize:none;border:0;background:transparent;color:var(--ink);padding:10px 7px;outline:none;font-size:14px;line-height:1.45}
.composer textarea::placeholder{color:#9aa0ab}
.composer-button{display:grid;place-items:center;width:38px;height:38px;flex:0 0 38px;border:0;border-radius:10px;background:transparent;color:#7d8592}
.composer-button:hover{background:#f4f4f7;color:#3f4652}
.composer-button.recording{background:#fdf2f8;color:#db2777}
.composer-button svg{width:18px;height:18px;stroke-width:1.8}
.send-button{display:grid;place-items:center;width:38px;height:38px;flex:0 0 38px;border:0;border-radius:11px;background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;box-shadow:0 8px 18px -10px rgba(168,85,247,.85)}
.send-button:disabled{background:#e9eaf0;color:#a3a9b6;box-shadow:none}
.send-button svg{width:18px;height:18px;stroke-width:2}
.send-button .stop-icon{display:none}
.send-button.streaming .send-icon{display:none}
.send-button.streaming .stop-icon{display:block}
.send-button.streaming{background:#111722}
.composer-meta{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:7px 5px 0;color:#9ba1ad;font-size:9.5px}
.mobile-overlay{display:none}
.toast{position:fixed;left:50%;bottom:26px;z-index:100;max-width:min(420px,calc(100vw - 32px));padding:10px 14px;border-radius:10px;background:#171b24;color:#f1f3f7;font-size:12px;box-shadow:var(--shadow);opacity:0;pointer-events:none;transform:translate(-50%,12px);transition:.2s}
.toast.show{opacity:1;transform:translate(-50%,0)}
.toast.error{background:#7f1d1d}

@media(max-width:880px){
  .auth-layout{grid-template-columns:1fr;max-width:430px;gap:0}
  .auth-story{display:none}
  .auth-card{justify-self:center;max-width:430px}
  .auth-mobile-brand{display:flex;align-items:center;gap:9px;margin-bottom:20px;font-size:19px;font-weight:800;letter-spacing:-.03em}
  .app{display:block}
  .sidebar{position:fixed;z-index:40;left:0;top:0;bottom:0;width:min(300px,86vw);transform:translateX(-105%);transition:transform .25s cubic-bezier(.22,1,.36,1);box-shadow:20px 0 60px rgba(0,0,0,.35)}
  body.sidebar-open .sidebar{transform:translateX(0)}
  .mobile-overlay{position:fixed;inset:0;z-index:30;background:rgba(5,7,12,.5);backdrop-filter:blur(2px)}
  body.sidebar-open .mobile-overlay{display:block}
  .sidebar-close{display:grid;color:#aeb6c5}
  .menu-button{display:grid}
  .main{height:100dvh}
  .chat-header{padding:0 10px}
  .header-actions{gap:1px}
  .model-select{max-width:100px}
  .chat-heading p{display:none}
  .messages{padding:22px 14px 10px}
  .welcome{padding:5vh 16px 24px}
  .welcome h2{font-size:24px}
  .suggestions{grid-template-columns:1fr}
  .composer-wrap{padding:7px 10px calc(9px + env(safe-area-inset-bottom))}
  .composer-meta span:last-child{display:none}
  .message-inner{max-width:calc(100% - 36px)}
}
@media(max-width:520px){
  .auth-card{padding:20px;border-radius:20px}
  .header-actions .model-select{max-width:98px}
  .header-actions .icon-button{width:30px;height:30px}
  .chat-header{gap:6px}
  .send-button{width:36px;height:36px}
  .composer-button{width:34px;height:34px;flex-basis:34px}
}
.sidebar .sidebar-close{display:none}
@media(max-width:880px){.sidebar .sidebar-close{display:grid;color:#aeb6c5}}
.sidebar .sidebar-close{display:none}
@media(max-width:880px){.sidebar .sidebar-close{display:grid;color:#aeb6c5}}

.sidebar .sidebar-close{display:none!important}
@media(max-width:880px){.sidebar .sidebar-close{display:grid!important;color:#aeb6c5}}
.sidebar .sidebar-close{display:none!important}
@media(max-width:880px){.sidebar .sidebar-close{display:grid!important;color:#aeb6c5}}

.brand-mark img,.welcome-mark img,.wallet-icon img,.message-avatar img{width:100%;height:100%;object-fit:contain;border-radius:inherit;display:block}
.site-link{display:flex;align-items:center;justify-content:center;gap:8px;width:100%;padding:10px;border:1px solid rgba(255,255,255,.1);border-radius:10px;background:rgba(255,255,255,.05);color:#dbe1eb;text-decoration:none;font-size:11.5px;font-weight:700}
.site-link:hover{background:rgba(255,255,255,.1);color:#fff}
.site-link svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:1.9;stroke-linecap:round;stroke-linejoin:round}
.attachment-chip img{width:22px;height:22px;flex:0 0 22px;object-fit:cover;border-radius:5px}
.message-image-link{display:inline-block;line-height:0}
.message-image{display:block;max-width:220px;max-height:160px;object-fit:cover;border:1px solid #e2e5eb;border-radius:10px}