:root{
  --bg:#f6f5f2; --panel:#ffffff; --surface:#ffffff; --ink:#18171a; --muted:#6f6b72; --line:#e6e3dd;
  --soft:#f1efea; --accent:#e8572a; --accent-soft:#fdeee7; --btn:#18171a; --btn-ink:#ffffff;
  --user:#18171a; --user-ink:#ffffff; --danger:#c0362c; --ok:#2f7d4f; --code:#f4f2ee;
  --mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,monospace; color-scheme:light;
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --bg:#111013; --panel:#18171b; --surface:#1e1d22; --ink:#f1eff2; --muted:#9c97a0; --line:#2b2a30;
  --soft:#232227; --accent:#ff7a4d; --accent-soft:#3a2219; --btn:#f1eff2; --btn-ink:#18171a;
  --user:#2d2c33; --user-ink:#f1eff2; --danger:#ff7b70; --ok:#6fcf97; --code:#232227; color-scheme:dark;}}
:root[data-theme="dark"]{
  --bg:#111013; --panel:#18171b; --surface:#1e1d22; --ink:#f1eff2; --muted:#9c97a0; --line:#2b2a30;
  --soft:#232227; --accent:#ff7a4d; --accent-soft:#3a2219; --btn:#f1eff2; --btn-ink:#18171a;
  --user:#2d2c33; --user-ink:#f1eff2; --danger:#ff7b70; --ok:#6fcf97; --code:#232227; color-scheme:dark;}
[hidden]{display:none!important}
*{box-sizing:border-box}
html,body{height:100%;margin:0}
body{background:var(--bg);color:var(--ink);font:14px/1.55 Inter,system-ui,-apple-system,sans-serif;overflow:hidden;-webkit-font-smoothing:antialiased}
button,input,textarea,select{font:inherit;color:inherit}
button{cursor:pointer}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;flex:none}
.brand{font-weight:700;letter-spacing:-.03em;font-size:17px}
.brand.big{font-size:40px;line-height:1}
.dot{display:inline-block;width:.42em;height:.42em;border-radius:50%;background:var(--accent);margin-left:.1em}

/* Login */
#login{height:100%;display:grid;place-items:center;padding:24px 16px;background:radial-gradient(55% 45% at 85% 0%,var(--accent-soft),transparent 70%),var(--bg)}
.login-card{width:100%;max-width:360px;display:grid;gap:14px}
.login-card p{margin:0 0 6px;color:var(--muted)}
.field{display:grid;gap:6px}
.field label{font-size:12px;font-weight:600;color:var(--muted)}
.field input{padding:12px 14px;border:1.5px solid var(--line);border-radius:12px;background:var(--surface);outline:none}
.field input:focus{border-color:var(--accent)}
.btn{padding:12px 16px;border:0;border-radius:999px;background:var(--btn);color:var(--btn-ink);font-weight:600}
.err{color:var(--danger);font-size:13px;min-height:1.2em}

/* Layout */
#app{height:100%;display:grid;grid-template-columns:1fr 6px var(--chat-w,420px)}
#app.nochat{grid-template-columns:1fr 0 0}
#app.nochat #chat,#app.nochat #divider{display:none}
#preview{display:flex;flex-direction:column;min-width:0;min-height:0}
.bar{display:flex;align-items:center;gap:4px;padding:6px 8px;background:var(--panel);border-bottom:1px solid var(--line)}
.ib{display:inline-grid;place-items:center;width:32px;height:32px;border:0;border-radius:8px;background:transparent;color:var(--muted)}
.ib:hover{background:var(--soft);color:var(--ink)}
.tb{display:inline-flex;align-items:center;gap:6px;height:32px;padding:0 10px;border:0;border-radius:8px;background:transparent;color:var(--muted);font-size:13px;font-weight:500}
.tb:hover{background:var(--soft);color:var(--ink)}
.tb svg{width:16px;height:16px}
.grow{flex:1}
#urlForm{display:flex;align-items:center;flex:0 1 380px;min-width:120px;height:32px;margin:0 4px;padding:0 10px;border-radius:8px;background:var(--soft);font:12.5px var(--mono)}
#urlForm .host{color:var(--muted)}
#url{flex:1;min-width:0;border:0;background:transparent;outline:none;padding:0}
.frame-wrap{flex:1;min-height:0;background:var(--surface)}
#frame{width:100%;height:100%;border:0;display:block;background:#fff}
#divider{cursor:col-resize;background:var(--line);transition:background .15s}
#divider:hover,#divider.on{background:var(--accent)}
body.dragging{cursor:col-resize;user-select:none}
body.dragging iframe{pointer-events:none}

/* Chat */
#chat{display:flex;flex-direction:column;min-height:0;min-width:0;background:var(--panel)}
.chat-head{position:relative;display:flex;align-items:center;gap:6px;padding:8px 8px 8px 14px;border-bottom:1px solid var(--line)}
#chatSel{flex:1;min-width:0;height:32px;margin-left:8px;padding:0 8px;border:1px solid var(--line);border-radius:8px;background:var(--surface);text-overflow:ellipsis}
.menu{position:absolute;right:8px;top:44px;z-index:5;display:grid;min-width:180px;padding:4px;border:1px solid var(--line);border-radius:10px;background:var(--surface);box-shadow:0 8px 30px rgb(0 0 0/.12)}
.menu button{text-align:left;padding:8px 10px;border:0;border-radius:6px;background:transparent}
.menu button:hover{background:var(--soft)}
#busyBanner{display:flex;align-items:center;gap:8px;padding:8px 14px;background:var(--accent-soft);font-size:13px}
#busyBanner button{margin-left:auto;border:0;background:transparent;text-decoration:underline;color:inherit}
#scroller{flex:1;overflow-y:auto;overscroll-behavior:contain}
#messages{display:flex;flex-direction:column;gap:14px;padding:16px 14px 24px}
.empty{margin:auto;padding:40px 12px;text-align:center;color:var(--muted)}
.empty h2{margin:0 0 6px;color:var(--ink);font-size:20px;letter-spacing:-.02em}
.empty .ideas{display:grid;gap:6px;margin-top:16px}
.empty .ideas button{padding:9px 12px;border:1px solid var(--line);border-radius:10px;background:var(--surface);text-align:left;color:var(--ink)}
.empty .ideas button:hover{border-color:var(--accent)}
.msg{display:flex;flex-direction:column;gap:6px;min-width:0}
.msg.user{align-items:flex-end}
.msg.user .bubble{max-width:92%;padding:9px 13px;border-radius:14px 14px 4px 14px;background:var(--user);color:var(--user-ink);white-space:pre-wrap;overflow-wrap:anywhere}
.msg.assistant .bubble{overflow-wrap:anywhere}
.bubble p{margin:0 0 .6em}.bubble p:last-child{margin-bottom:0}
.bubble h3{margin:.8em 0 .3em;font-size:14px}
.bubble ul,.bubble ol{margin:.2em 0 .6em;padding-left:1.3em}
.bubble code{font:12.5px var(--mono);padding:1px 5px;border-radius:5px;background:var(--code)}
.bubble pre{margin:.4em 0 .8em;padding:10px 12px;border-radius:10px;background:var(--code);overflow-x:auto}
.bubble pre code{padding:0;background:none}
.bubble a{color:var(--accent)}
.tbl{overflow-x:auto}.bubble table{border-collapse:collapse;margin:.4em 0 .8em;font-size:13px}
.bubble th,.bubble td{border:1px solid var(--line);padding:4px 8px;text-align:left}
.thinking{color:var(--muted);font-style:italic}
.act{font:12px/1.5 var(--mono);color:var(--muted)}
.act summary{cursor:pointer;list-style:none;display:inline-flex;align-items:center;gap:6px;padding:2px 8px;border-radius:999px;background:var(--soft)}
.act summary{max-width:100%}
.act summary .n{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.act summary::-webkit-details-marker{display:none}
#modelSel{height:32px;padding:0 6px;border:1px solid var(--line);border-radius:8px;background:var(--surface);font-size:12px;color:var(--muted)}
.status{display:flex;align-items:center;gap:8px;min-width:0;font-size:13px;color:var(--muted)}
.status .st-text{min-width:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;color:var(--ink);font-weight:500}
.status .st-meta{flex:none;font-size:12px;font-variant-numeric:tabular-nums}
.status.thinking .st-text{background:linear-gradient(90deg,var(--muted) 0%,var(--ink) 50%,var(--muted) 100%);background-size:200% 100%;-webkit-background-clip:text;background-clip:text;color:transparent;animation:shimmer 2.2s linear infinite}
@keyframes shimmer{from{background-position:200% 0}to{background-position:-200% 0}}
.act ul{margin:6px 0 0;padding:0 0 0 10px;list-style:none;border-left:2px solid var(--line);max-height:220px;overflow-y:auto}
.act li{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.act .live{color:var(--ink)}
.spin{width:10px;height:10px;border-radius:50%;border:2px solid var(--muted);border-top-color:transparent;animation:spin .8s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.commits{display:flex;flex-wrap:wrap;gap:6px}
.commit{display:inline-flex;gap:6px;align-items:center;max-width:100%;padding:3px 9px;border-radius:999px;background:var(--accent-soft);font-size:12px;text-decoration:none;color:var(--ink)}
.commit b{font:500 11.5px var(--mono);color:var(--accent)}
.commit span{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.chip{display:inline-flex;align-items:center;gap:6px;max-width:220px;padding:4px 10px;border-radius:999px;background:var(--soft);font-size:12px;text-decoration:none;color:inherit}
.chip span{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.chip button{border:0;background:none;padding:0;color:var(--muted)}
.msg.user .files{display:flex;flex-wrap:wrap;gap:6px;justify-content:flex-end}
.msg img.thumb{max-width:180px;max-height:140px;border-radius:10px;border:1px solid var(--line)}

.composer{margin:0 10px 10px;padding:8px;border:1px solid var(--line);border-radius:16px;background:var(--surface)}
.composer:focus-within{border-color:var(--muted)}
.pending{display:flex;flex-wrap:wrap;gap:6px}
.pending:not(:empty){margin-bottom:6px}
#input{width:100%;resize:none;border:0;outline:none;background:transparent;padding:4px 6px;max-height:220px;line-height:1.5}
.composer-row{display:flex;align-items:center;gap:2px}
.hint{flex:1;font-size:11px;color:var(--muted);padding-left:6px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
#mic.on{color:var(--danger);background:var(--soft)}
.send{display:grid;place-items:center;width:34px;height:34px;border:0;border-radius:50%;background:var(--btn);color:var(--btn-ink)}
.send:disabled{opacity:.35;cursor:default}

/* Modal y toast */
dialog{width:min(860px,calc(100vw - 32px));max-height:min(80vh,760px);padding:0;border:1px solid var(--line);border-radius:14px;background:var(--panel);color:var(--ink);box-shadow:0 20px 60px rgb(0 0 0/.25)}
dialog::backdrop{background:rgb(0 0 0/.35)}
.modal-head{display:flex;align-items:center;padding:10px 10px 10px 18px;border-bottom:1px solid var(--line)}
.modal-head h3{flex:1;margin:0;font-size:15px}
#modalBody{padding:14px 18px 18px;overflow:auto;max-height:calc(min(80vh,760px) - 54px)}
#modalBody pre{margin:0 0 14px;padding:10px 12px;border-radius:10px;background:var(--code);font:12px/1.5 var(--mono);white-space:pre-wrap;overflow-wrap:anywhere}
#modalBody h4{margin:0 0 6px;font-size:13px;color:var(--muted)}
.hist{display:grid;gap:2px;margin:0 0 14px;padding:0;list-style:none}
.hist li{display:flex;gap:10px;align-items:baseline;padding:6px 8px;border-radius:8px}
.hist li:hover{background:var(--soft)}
.hist b{font:500 12px var(--mono);color:var(--accent)}
.hist a{text-decoration:none;color:inherit}
.hist span{flex:1}
.hist em{font-style:normal;font-size:12px;color:var(--muted);white-space:nowrap}
.btn.small{padding:8px 14px;font-size:13px}
.btn.ghost{background:var(--soft);color:var(--ink)}
#toast{position:fixed;left:50%;bottom:24px;transform:translateX(-50%);z-index:20;max-width:calc(100vw - 32px);padding:10px 16px;border-radius:12px;background:var(--btn);color:var(--btn-ink);font-size:13px;box-shadow:0 8px 30px rgb(0 0 0/.2)}

#tabs{display:none}
@media (max-width:820px){
  #app{grid-template-columns:1fr!important;grid-template-rows:1fr auto}
  #divider,#toggleChat,.tb span,.hint{display:none}
  #preview,#chat{grid-row:1;grid-column:1}
  #app[data-tab="app"] #chat,#app[data-tab="chat"] #preview{display:none}
  #app.nochat #chat{display:flex}
  #tabs{display:grid;grid-template-columns:1fr 1fr;border-top:1px solid var(--line);background:var(--panel);padding-bottom:env(safe-area-inset-bottom)}
  #tabs button{padding:12px;border:0;background:transparent;font-weight:600;color:var(--muted)}
  #tabs button.on{color:var(--ink);box-shadow:inset 0 2px 0 var(--accent)}
  #urlForm{flex:1}
}