*{box-sizing:border-box;margin:0;padding:0}
:root{
  --bg:#ffffff;--sidebar:#ffffff;--line:#e8e8ec;--line2:#f0f0f4;
  --fg:#202124;--fg2:#333333;--muted:#70757a;--soft:#f7f7f9;
  --black:#000000;--blue:#1a73e8;--green:#27c98a;--radius:16px;
  --shadow:0 1px 3px rgba(60,64,67,.1),0 4px 18px rgba(60,64,67,.08);
}
html,body{height:100%}
body{font-family:"Inter",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Arial,sans-serif;background:var(--bg);color:var(--fg);font-size:15px;line-height:1.5;-webkit-font-smoothing:antialiased}
button{font:inherit;color:inherit;background:none;border:none;cursor:pointer}
textarea,input{font:inherit;color:inherit;outline:none}
.icon-btn{width:36px;height:36px;border-radius:10px;display:grid;place-items:center;font-size:18px;color:var(--muted);transition:background .15s}
.icon-btn:hover{background:var(--soft)}
.text-btn{color:var(--fg2);font-weight:600;font-size:13px;padding:4px 6px}
.text-btn:hover{color:var(--fg)}
.app-shell{display:flex;height:100vh;overflow:hidden}

/* ============ sidebar ============ */
.sidebar{width:286px;flex:0 0 auto;background:var(--sidebar);border-right:1px solid var(--line);display:flex;flex-direction:column;padding:14px 12px;gap:10px;overflow-y:auto}
.brand{display:flex;align-items:center;justify-content:space-between;padding:4px 6px 2px}
.brand-text strong{font-size:19px;font-weight:800;letter-spacing:-.3px}
.new-chat-btn{display:flex;align-items:center;gap:8px;background:var(--black);color:#fff;border-radius:999px;padding:10px 16px;font-weight:600;font-size:14px;justify-content:center;transition:transform .12s}
.new-chat-btn:hover{transform:translateY(-1px)}
.side-search input{width:100%;background:var(--soft);border:1px solid var(--line);border-radius:10px;padding:9px 12px;font-size:13.5px}
.side-search input::placeholder{color:var(--muted)}
.side-quick .side-row{width:100%;display:flex;align-items:center;gap:10px;padding:9px 10px;border-radius:10px;font-size:14px;color:var(--fg2)}
.side-quick .side-row:hover{background:var(--soft)}
.side-caption{font-size:11px;font-weight:700;letter-spacing:.6px;text-transform:uppercase;color:var(--muted);padding:8px 10px 2px}
.chat-history{display:flex;flex-direction:column;gap:2px;overflow-y:auto;min-height:40px;max-height:190px}
.hist-empty{font-size:12.5px;color:var(--muted);padding:8px 10px}
.hist-item{display:flex;align-items:center;gap:8px;padding:8px 10px;border-radius:10px;font-size:13.5px;color:var(--fg2);text-align:left;white-space:nowrap;overflow:hidden}
.hist-item:hover{background:var(--soft)}
.hist-item.active{background:#eef4ff;color:#1a4fa0}
.hist-item span.t{overflow:hidden;text-overflow:ellipsis}
.hist-item .x{margin-left:auto;color:var(--muted);font-size:12px;padding:2px 4px;border-radius:6px}
.hist-item .x:hover{color:#d93025;background:#fce8e6}
.side-nav{display:flex;flex-direction:column;gap:1px;border-top:1px solid var(--line);padding-top:6px}
.nav-item{display:flex;align-items:center;gap:10px;padding:9px 10px;border-radius:10px;font-size:14px;color:var(--fg2);text-align:left}
.nav-item:hover{background:var(--soft)}
.nav-item.active{background:#eef4ff;color:#1a4fa0;font-weight:600}
.nav-item span{width:20px;text-align:center}
.nav-count{margin-left:auto;background:var(--soft);border-radius:999px;font-size:11px;padding:1px 8px;font-weight:700;color:var(--muted)}
.sidebar-bottom{margin-top:auto;border-top:1px solid var(--line);padding-top:8px;display:flex;flex-direction:column;gap:1px}
.sidebar-bottom .side-row{width:100%;display:flex;align-items:center;gap:10px;padding:8px 10px;border-radius:10px;font-size:13.5px;color:var(--fg2)}
.sidebar-bottom .side-row:hover{background:var(--soft)}
.sidebar-bottom .dim{color:var(--muted)}
.user-row{display:flex;align-items:center;gap:10px;padding:10px;border-radius:12px;margin-top:4px}
.user-row:hover{background:var(--soft)}
.avatar{width:34px;height:34px;border-radius:50%;background:linear-gradient(135deg,#1a73e8,#6d4aff);color:#fff;display:grid;place-items:center;font-weight:700;font-size:14px;flex:0 0 auto}
.small-avatar{width:32px;height:32px;font-size:13px}
.user-meta{min-width:0;flex:1}
.user-meta strong{display:block;font-size:13.5px}
.user-meta small{display:block;font-size:11.5px;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.chev{color:var(--muted)}
.status-chip{display:flex;align-items:center;gap:8px;padding:6px 10px;font-size:12px;color:var(--muted)}
.status-dot{width:8px;height:8px;border-radius:50%;background:#e35d64;flex:0 0 auto}
.status-dot.on{background:var(--green)}

/* ============ main ============ */
.main-area{flex:1;min-width:0;display:flex;flex-direction:column;overflow:hidden}
.topbar{display:flex;align-items:center;gap:12px;padding:10px 22px;border-bottom:1px solid var(--line);flex:0 0 auto;background:var(--bg)}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13.5px;color:var(--muted)}
.breadcrumb strong{color:var(--fg);font-weight:600}
.crumb-sep{color:var(--line)}
.top-actions{margin-left:auto;display:flex;align-items:center;gap:10px}
.pro-btn{border:1px solid var(--line);border-radius:999px;padding:7px 16px;font-size:13px;font-weight:600;background:var(--black);color:#fff}
.pro-btn:hover{opacity:.9}
.menu-btn{display:none}
.content{flex:1;overflow-y:auto;padding:34px 48px 80px;scroll-behavior:smooth}
.view{display:none;max-width:880px;margin:0 auto;animation:fade .18s ease}
.view.active{display:block}
@keyframes fade{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}
.page-intro{margin-bottom:22px}
.page-intro .eyebrow{font-size:11px;font-weight:700;letter-spacing:.8px;text-transform:uppercase;color:var(--blue);margin-bottom:6px}
.page-intro h1{font-size:30px;font-weight:800;letter-spacing:-.4px}
.page-intro p{color:var(--muted);margin-top:6px;font-size:14.5px}
.page-intro.slim{margin-bottom:12px}

/* ============ home hero ============ */
.home-hero{text-align:center;margin:44px 0 26px}
.greet-icon{font-size:30px;letter-spacing:4px;color:var(--fg);opacity:.85;margin-bottom:10px;font-weight:700}
.home-hero h1{font-size:34px;font-weight:800;letter-spacing:-.5px}
.greet-sub{color:var(--muted);margin-top:8px;font-size:16px}

/* big composer */
.big-composer{border:1px solid var(--line);border-radius:24px;padding:18px 18px 14px;background:var(--bg);box-shadow:var(--shadow);transition:border-color .15s,box-shadow .15s}
.big-composer:focus-within{border-color:#d5d9e0;box-shadow:0 2px 8px rgba(60,64,67,.14),0 12px 32px rgba(60,64,67,.10)}
.big-composer textarea{width:100%;border:none;background:transparent;resize:none;font-size:16px;min-height:84px;padding:2px 4px}
.big-composer textarea::placeholder{color:#9aa0a6}
.big-composer.small textarea{min-height:44px;font-size:15px}
.attach-preview{display:flex;align-items:center;gap:10px;background:var(--soft);border:1px solid var(--line);border-radius:12px;padding:8px;margin-bottom:10px;width:fit-content;max-width:100%}
.attach-preview img{width:52px;height:52px;object-fit:cover;border-radius:8px}
.attach-preview .rm{color:var(--muted);padding:2px 8px;border-radius:8px}
.attach-preview .rm:hover{color:#d93025}
.composer-controls{display:flex;align-items:center;gap:8px;margin-top:10px;border-top:1px solid var(--line2);padding-top:12px}
.ctl-left{display:flex;align-items:center;gap:6px;flex-wrap:wrap}
.ctl-btn{display:flex;align-items:center;gap:7px;padding:8px 13px;border-radius:999px;font-size:13.5px;color:var(--fg2);font-weight:500}
.ctl-btn:hover{background:var(--soft)}
.ctl-btn.on{background:#eef4ff;color:#1a4fa0;font-weight:600}
.ctl-right{margin-left:auto;display:flex;align-items:center;gap:12px}
.model-label{color:var(--muted);font-size:12px;font-weight:500}
.send-round{width:44px;height:44px;border-radius:50%;background:var(--black);color:#fff;font-size:19px;display:grid;place-items:center;transition:transform .12s}
.send-round:hover{transform:scale(1.05)}
.send-round:disabled{background:#d5d9e0;cursor:default;transform:none}

/* quick pills */
.quick-row{display:flex;gap:8px;flex-wrap:wrap;justify-content:center;margin:20px 0 6px}
.pill{border:1px solid var(--line);border-radius:999px;padding:8px 16px;font-size:13.5px;color:var(--fg2);background:var(--bg)}
.pill:hover{background:var(--soft);border-color:#d5d9e0}
.pill.more{color:var(--muted)}

/* models */
.models-section{margin:34px 0 8px}
.models-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px}
.models-title{display:flex;align-items:center;gap:9px}
.models-title h2{font-size:17px;font-weight:700}
.green-dot{width:9px;height:9px;border-radius:50%;background:var(--green);box-shadow:0 0 8px rgba(39,201,138,.6)}
.models-carousel{display:flex;align-items:center;gap:10px}
.models-track{display:flex;gap:12px;overflow-x:auto;scroll-behavior:smooth;scrollbar-width:none;flex:1;padding:4px 2px}
.models-track::-webkit-scrollbar{display:none}
.car-arrow{width:34px;height:34px;border-radius:50%;border:1px solid var(--line);font-size:18px;color:var(--fg2);display:grid;place-items:center;flex:0 0 auto}
.car-arrow:hover{background:var(--soft)}
.model-card{border:1px solid var(--line);border-radius:18px;padding:16px;width:214px;flex:0 0 auto;text-align:left;background:var(--bg);transition:border-color .15s,box-shadow .15s}
.model-card:hover{border-color:#c9d4e8;box-shadow:var(--shadow)}
.model-card.active{border-color:var(--black);box-shadow:0 0 0 1px var(--black)}
.m-icon{width:34px;height:34px;border-radius:10px;display:grid;place-items:center;font-size:16px;margin-bottom:10px;color:#fff}
.m-icon.dark{background:#202124}.m-icon.green{background:#27ae60}.m-icon.blue{background:linear-gradient(135deg,#1a73e8,#4285f4)}.m-icon.orange{background:#d97757}
.model-card strong{display:block;font-size:14.5px;margin-bottom:4px}
.model-card small{color:var(--muted);font-size:12.5px;line-height:1.45;display:block}

/* sections */
.section-heading{display:flex;align-items:center;justify-content:space-between;margin:36px 0 14px}
.section-heading h2{font-size:17px;font-weight:700}
.section-heading p{color:var(--muted);font-size:13px;margin-top:2px}
.home-footer{display:flex;justify-content:space-between;color:var(--muted);font-size:12.5px;margin-top:44px;padding-top:16px;border-top:1px solid var(--line2)}

/* panels */
.panel{background:var(--bg);border:1px solid var(--line);border-radius:18px;padding:22px;box-shadow:var(--shadow)}
.panel-title{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.panel-title .panel-icon{width:40px;height:40px;border-radius:12px;background:var(--soft);display:grid;place-items:center;font-size:18px}
.panel-title h3{font-size:16px;font-weight:700}
.panel-title p{color:var(--muted);font-size:12.5px}
.panel label{display:block;font-size:12.5px;font-weight:600;color:var(--muted);margin:12px 0 6px}
.panel input,.panel textarea{width:100%;border:1px solid var(--line);border-radius:12px;padding:11px 14px;font-size:14px;background:var(--bg)}
.panel input:focus,.panel textarea:focus{border-color:var(--blue)}
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-bottom:18px}
.primary-btn{background:var(--black);color:#fff;border-radius:999px;padding:11px 22px;font-weight:600;font-size:14px;display:inline-flex;align-items:center;gap:8px;justify-content:center}
.primary-btn:hover{opacity:.92}
.full-btn{width:100%;margin-top:16px}
.secondary-btn{border:1px solid var(--line);border-radius:999px;padding:8px 16px;font-size:13px;font-weight:600;color:var(--fg2)}
.secondary-btn:hover{background:var(--soft)}
.mode-toggle{display:flex;gap:6px;margin-top:14px}
.mode-btn{border:1px solid var(--line);border-radius:999px;padding:7px 14px;font-size:12.5px;color:var(--muted)}
.mode-btn.active{background:#eef4ff;color:#1a4fa0;border-color:#c9d9ff;font-weight:600}
.tiny-note{color:var(--muted);font-size:12px;margin-top:10px;line-height:1.5}

/* tasks */
.task-list{display:flex;flex-direction:column;gap:8px}
.task-row{display:flex;align-items:center;gap:12px;border:1px solid var(--line);border-radius:14px;padding:12px 14px;background:var(--bg)}
.task-row:hover{background:var(--soft);cursor:pointer}
.task-icon{width:34px;height:34px;border-radius:10px;background:var(--soft);display:grid;place-items:center;font-size:15px;flex:0 0 auto}
.task-main{flex:1;min-width:0}
.task-main strong{display:block;font-size:13.5px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.task-main small{color:var(--muted);font-size:12px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;display:block}
.task-meta{display:flex;flex-direction:column;align-items:flex-end;gap:4px}
.status-tag{font-size:11px;font-weight:700;padding:2px 10px;border-radius:999px;background:var(--soft);color:var(--muted);text-transform:capitalize}
.status-tag.completed{background:#e6f7ef;color:#1a8a5c}
.status-tag.failed{background:#fce8e6;color:#d93025}
.status-tag.running,.status-tag.queued{background:#fef7e0;color:#b08000}
.status-tag.good{background:#e6f7ef;color:#1a8a5c}
.status-tag.neutral{background:var(--soft);color:var(--muted)}
.task-time{font-size:11px;color:var(--muted)}
.empty-state{border:1px dashed var(--line);border-radius:14px;padding:26px;text-align:center;color:var(--muted)}
.empty-state span{font-size:22px;display:block;margin-bottom:6px}
.empty-state strong{color:var(--fg2);display:block;font-size:14px}
.empty-state small{font-size:12.5px}

/* browser preview */
.browser-preview .preview-screen{background:#0b0d12;border-radius:12px;min-height:190px;display:flex;flex-direction:column;overflow:hidden}
.browser-chrome{display:flex;align-items:center;gap:6px;background:#171a21;padding:8px 12px}
.browser-chrome i{width:9px;height:9px;border-radius:50%;background:#40434c}
.browser-chrome span{color:#8b8f9a;font-size:11px;margin-left:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.preview-placeholder{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;color:#9aa0b4;gap:6px;padding:20px}
.preview-placeholder .globe{font-size:26px}
.preview-placeholder strong{font-size:13px;color:#c8cad1}
.preview-placeholder small{font-size:11.5px}
.preview-screen img{width:100%;display:block}
.live-chip{font-size:11px;font-weight:700;padding:3px 12px;border-radius:999px;background:var(--soft);color:var(--muted);text-transform:capitalize}
.live-chip.active{background:#e6f7ef;color:#1a8a5c}
.preview-actions{display:flex;gap:8px;margin-top:12px}
.result-content{padding:6px 2px}
.result-content h3{font-size:15px;margin-bottom:8px}
.result-url{color:var(--blue);font-size:12.5px;display:block;margin-bottom:8px;word-break:break-all}
.result-content p{font-size:13.5px;color:var(--fg2)}
.result-text{white-space:pre-wrap;font-size:13px;color:var(--fg2);background:var(--soft);border-radius:12px;padding:14px;max-height:280px;overflow-y:auto;margin-top:10px}

/* chat */
.chat-panel{max-width:760px;margin:0 auto}
.chat-messages{min-height:280px;display:flex;flex-direction:column;gap:14px;margin-bottom:16px}
.chat-welcome{text-align:center;margin:auto;padding:36px 0}
.chat-welcome h2{font-size:20px;margin-top:10px}
.ai-badge.large{width:52px;height:52px;margin:0 auto;border-radius:16px;background:var(--black);color:#fff;display:grid;place-items:center;font-size:22px}
.msg{display:flex;gap:12px;max-width:100%}
.msg .who{width:30px;height:30px;border-radius:50%;flex:0 0 auto;display:grid;place-items:center;font-size:13px;font-weight:700;color:#fff}
.msg.user .who{background:#1a73e8}
.msg.ai .who{background:var(--black)}
.msg .b{background:var(--soft);border-radius:14px;padding:12px 14px;white-space:pre-wrap;font-size:14px;line-height:1.55}
.msg.user .b{background:#eef4ff}

/* misc cards */
.workspace-card{display:flex;align-items:center;gap:16px;border:1px solid var(--line);border-radius:18px;padding:22px;box-shadow:var(--shadow)}
.workspace-icon{width:44px;height:44px;border-radius:12px;background:linear-gradient(135deg,#1a73e8,#6d4aff);color:#fff;display:grid;place-items:center;font-weight:700}
.workspace-icon.big{width:52px;height:52px;font-size:20px}
.workspace-card-copy{flex:1}
.workspace-card-copy h3{font-size:16px}
.workspace-card-copy p{color:var(--muted);font-size:13px;margin:3px 0 8px}
.workspace-badge{font-size:11px;font-weight:800;letter-spacing:.6px;color:var(--muted)}
.notice-card{display:flex;gap:14px;border:1px solid var(--line);border-radius:18px;padding:18px;background:var(--soft);margin-top:16px}
.notice-card span{font-size:20px}
.notice-card strong{font-size:14px}
.notice-card p{color:var(--muted);font-size:13px;margin-top:4px}
.skill-library{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:12px}
.library-skill{border:1px solid var(--line);border-radius:16px;padding:18px;text-align:left}
.library-skill:hover{background:var(--soft)}
.skill-icon{width:36px;height:36px;border-radius:10px;display:grid;place-items:center;margin-bottom:10px;color:#fff}
.skill-icon.blue{background:#1a73e8}.skill-icon.violet{background:#7c5cff}.skill-icon.mint{background:#0aa} .skill-icon.amber{background:#f4a300}
.library-skill strong{display:block;font-size:14px}
.library-skill p{color:var(--muted);font-size:12.5px;margin:4px 0 10px}
.library-skill button{color:var(--blue);font-size:13px;font-weight:600}
.knowledge-list{margin-top:12px}
.knowledge-item{border:1px solid var(--line);border-radius:12px;padding:12px;margin-bottom:8px}
.integration-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:14px}
.integration-card{border:1px solid var(--line);border-radius:16px;padding:16px;display:flex;flex-wrap:wrap;gap:12px;align-items:center}
.integration-logo{width:38px;height:38px;border-radius:10px;display:grid;place-items:center;font-weight:700;color:#fff}
.integration-logo.google{background:#4285f4}.integration-logo.github{background:#24292e}.integration-logo.vercel{background:#000}.integration-logo.cloudflare{background:#f6821f}.integration-logo.browseruse{background:#1a73e8}.integration-logo.gemini{background:#8b5cf6}
.integration-card strong{font-size:14px}
.integration-card small{display:block;color:var(--muted);font-size:12px}
.integration-card p{width:100%;color:var(--muted);font-size:12px;margin-top:4px}
.integration-inline{font-size:11px;color:var(--muted);font-weight:600}
.settings-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.provider-logo{width:38px;height:38px;border-radius:10px;display:grid;place-items:center;color:#fff;font-weight:700}
.provider-logo.gemini{background:#8b5cf6}.provider-logo.browseruse{background:#1a73e8}.provider-logo.custom{background:#24292e}.provider-logo.local{background:#27ae60}
.config-row{display:flex;justify-content:space-between;padding:9px 0;border-bottom:1px solid var(--line2);font-size:13px}
.config-row span{color:var(--muted)}
.help-box{background:var(--soft);border-radius:12px;padding:12px;font-size:12.5px;color:var(--fg2);margin:12px 0}
.help-box code{background:#e4e7ec;border-radius:6px;padding:1px 6px;font-size:12px}
.external-link{color:var(--blue);font-size:13px;font-weight:600;text-decoration:none}
.security-note{display:flex;gap:14px;border:1px solid var(--line);border-radius:18px;padding:18px;margin-top:16px}
.panel-copy{color:var(--muted);font-size:13px}

/* toast */
.toast{position:fixed;bottom:26px;left:50%;transform:translate(-50%,16px);background:var(--black);color:#fff;padding:11px 20px;border-radius:12px;font-size:13.5px;opacity:0;pointer-events:none;transition:all .25s;z-index:99}
.toast.show{opacity:1;transform:translate(-50%,0)}

/* modal */
.modal-scrim{position:fixed;inset:0;background:rgba(0,0,0,.4);display:none;place-items:center;z-index:90;padding:20px}
.modal-scrim.show{display:grid}
.modal{background:var(--bg);border-radius:20px;padding:26px;max-width:420px;width:100%;box-shadow:0 24px 60px rgba(0,0,0,.25)}
.modal h3{font-size:17px;margin-bottom:8px}
.modal p{color:var(--muted);font-size:13.5px;margin-bottom:14px}
.modal .close-x{float:right;color:var(--muted);font-size:20px}

/* mobile */
.sidebar-scrim{position:fixed;inset:0;background:rgba(0,0,0,.35);display:none;z-index:60}
.sidebar-scrim.show{display:block}
.mobile-nav{display:none}
@media (max-width:1080px){.two-col,.settings-grid{grid-template-columns:1fr}}
@media (max-width:820px){
  .sidebar{position:fixed;left:0;top:0;bottom:0;z-index:70;transform:translateX(-104%);transition:transform .22s;box-shadow:0 0 40px rgba(0,0,0,.18)}
  .sidebar.open{transform:none}
  .menu-btn{display:grid}
  .content{padding:22px 16px 96px}
  .home-hero{margin:16px 0 18px}
  .home-hero h1{font-size:24px}
  .mobile-nav{display:flex;position:fixed;left:0;right:0;bottom:0;background:var(--bg);border-top:1px solid var(--line);z-index:50;padding:6px 8px calc(6px + env(safe-area-inset-bottom))}
  .mobile-nav-item{flex:1;display:flex;flex-direction:column;align-items:center;gap:2px;padding:6px;color:var(--muted);font-size:10.5px}
  .mobile-nav-item span{font-size:17px}
  .mobile-nav-item.active{color:var(--blue);font-weight:700}
  .breadcrumb{display:none}
  .pro-btn{font-size:12px;padding:6px 12px}
}