:root{font-family:system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;color-scheme:light;--bg:#fff;--surface:#f9f9f9;--soft:#f4f4f5;--input:#f4f4f5;--sidebar:#f8f8f8;--text:#232323;--muted:#747474;--border:#e7e7e8;--purple:#7855ca;--blue:#f2edfc;--shadow:0 4px 22px #00000010}html[data-theme="dark"]{color-scheme:dark;--bg:#212121;--surface:#242424;--soft:#303030;--input:#303030;--sidebar:#171717;--text:#ececec;--muted:#aeaeae;--border:#383838;--blue:#363046;--shadow:0 4px 26px #0004}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text)}button,textarea,select,input{font:inherit;color:inherit}button{cursor:pointer}button:disabled{opacity:.5;cursor:default}#screen{height:100dvh;display:flex;overflow:hidden}#sidebar{background:var(--sidebar);width:272px;min-width:272px;display:flex;flex-direction:column;border-right:1px solid var(--border);z-index:21}.sidebar-head{padding:20px 17px 12px;display:flex;align-items:center;justify-content:space-between}.brand{font-weight:750;display:flex;gap:10px;align-items:center;font-size:17px;letter-spacing:-.3px}.logo,.welcome-mark{color:#fff;background:linear-gradient(135deg,#9065e8,#2ba8ce);display:grid;place-items:center;border-radius:13px;width:36px;height:36px;font-size:26px;box-shadow:0 3px 14px #7855ca2e}.side-new{margin:9px 14px 20px;border:1px solid var(--border);background:var(--bg);border-radius:12px;padding:13px 14px;text-align:left;font-weight:650;display:flex;gap:10px;align-items:center}.plusmini{margin-left:auto;color:var(--muted)}.side-label{color:var(--muted);font-size:12px;padding:0 19px 8px}#historyList{padding:0 9px;flex:1;overflow:auto}.history-item{width:100%;text-align:left;padding:12px 10px;border:0;border-radius:10px;background:transparent;font-size:14px;display:flex;justify-content:space-between;gap:4px}.history-item.active,.history-item:hover{background:var(--soft)}.history-item span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.history-item button{background:none;border:0;color:var(--muted);padding:1px 5px}.side-footer{padding:18px;color:var(--muted);border-top:1px solid var(--border);font-size:12px}.side-footer small{display:block;margin-top:3px}.app{flex:1;min-width:0;display:flex;flex-direction:column}.topbar{height:65px;min-height:65px;display:flex;align-items:center;justify-content:space-between;padding:0 25px;border-bottom:1px solid var(--border);gap:8px}.top-left,.top-right{display:flex;align-items:center;gap:12px}.top-left strong{font-size:17px}.chev{color:var(--purple);font-size:17px}.top-right{font-size:12px;color:var(--muted);gap:8px}.status-dot{background:#b8b8b8;width:7px;height:7px;border-radius:50%}.status-dot.ready{background:#3bb685}.icon-btn{display:grid;place-items:center;width:34px;height:34px;border:0;background:none;border-radius:9px;font-size:23px}.icon-btn:hover{background:var(--soft)}.workspace{width:100%;max-width:910px;margin:auto;min-height:0;flex:1;display:flex;flex-direction:column}.main-tabs{padding:14px 28px 0;display:flex;align-items:center;gap:5px}.main-tab{background:none;border:0;border-radius:9px;padding:9px 15px;font-size:13px;color:var(--muted);font-weight:650}.main-tab.active{background:var(--soft);color:var(--text)}.chat-panel{flex:1;min-height:0;display:flex;flex-direction:column}.messages{flex:1;min-height:0;overflow:auto;padding:17px max(22px,calc((100% - 760px)/2)) 22px;scroll-behavior:smooth;display:flex;flex-direction:column;gap:23px}.welcome{margin:auto;text-align:center;width:100%;max-width:570px;padding-bottom:60px}.welcome-mark{width:54px;height:54px;font-size:36px;margin:0 auto 20px;border-radius:18px}.welcome-mark.sm{width:42px;height:42px;min-width:42px;font-size:26px;margin:0}.welcome h1{font-size:29px;font-weight:720;letter-spacing:-.8px;margin:0 0 10px}.welcome p{color:var(--muted);line-height:1.55;font-size:14px;margin:0 auto 24px;max-width:500px}.examples{display:flex;gap:8px;justify-content:center;flex-wrap:wrap}.examples button{border:1px solid var(--border);padding:10px 13px;border-radius:12px;background:var(--bg);font-size:12px}.examples button:hover{background:var(--soft)}.msg{display:flex;flex-direction:column;gap:6px}.msg.user{align-items:flex-end}.msg.assistant{align-items:flex-start}.msg-body{font-size:15px;line-height:1.67;max-width:100%;overflow-wrap:anywhere;white-space:pre-wrap}.msg.user .msg-body{background:var(--soft);border-radius:20px;padding:11px 16px;max-width:85%}.msg.assistant .msg-body{padding:3px 0}.msg.error .msg-body{color:#cb4856}.msg-meta{color:var(--muted);font-size:11px;margin-top:3px}.msg-file{display:inline-flex;align-items:center;gap:4px;border:1px solid var(--border);border-radius:10px;padding:5px 8px;font-size:11px;margin:4px 5px 0 0}.source-list{border:1px solid var(--border);padding:13px;background:var(--surface);border-radius:13px;width:100%;max-width:720px;font-size:12px;line-height:1.5}.source-list strong{display:block;margin-bottom:7px}.source-list a{display:block;word-break:break-word;color:var(--purple);margin:7px 0}.source-list .source-date{font-size:11px;color:var(--muted)}.source-warning{border-color:#ddadad}.composer-wrap{padding:0 25px 11px;max-width:820px;width:100%;margin:auto}.settings-row{display:flex;gap:14px;align-items:center;min-height:31px;padding:0 10px}.settings-row details{position:relative;font-size:12px}.settings-row summary{color:var(--muted);list-style:none;cursor:pointer;padding:4px 2px}.settings-row summary::-webkit-details-marker{display:none}.options-body{position:absolute;bottom:27px;left:0;background:var(--bg);width:min(335px,calc(100vw - 45px));border:1px solid var(--border);border-radius:13px;box-shadow:var(--shadow);padding:14px;z-index:10;display:flex;flex-direction:column;gap:12px}.options-body label{display:grid;gap:6px;font-size:12px;color:var(--muted)}.options-body select,.options-body input{padding:10px;border:1px solid var(--border);border-radius:9px;background:var(--surface);color:var(--text);width:100%;font-size:13px}.option-foot{font-size:11px;color:var(--muted);line-height:1.45}.attachment-tray{display:flex;gap:7px;flex-wrap:wrap;padding:8px 4px}.attachment-tray[hidden]{display:none}.attach-chip{display:flex;align-items:center;gap:7px;background:var(--soft);border:1px solid var(--border);border-radius:12px;padding:8px;font-size:12px;max-width:100%}.attach-chip img{width:34px;height:34px;border-radius:7px;object-fit:cover}.attach-chip span{max-width:150px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.attach-chip button{border:0;background:none;color:var(--muted);font-size:18px;padding:0 4px}.composer{display:flex;align-items:flex-end;gap:12px;background:var(--input);border:1px solid var(--border);border-radius:27px;padding:10px 10px 10px 12px;min-height:66px}.composer:focus-within{outline:1px solid #9e91b0}.composer textarea{flex:1;resize:none;outline:0;border:0;background:transparent;line-height:1.5;padding:8px 0;min-height:39px;max-height:170px;font-size:15px}.composer button{border:0;border-radius:50%;height:36px;width:36px;min-width:36px;display:grid;place-items:center}.add-file{background:var(--bg);border:1px solid var(--border)!important;color:var(--text);font-size:26px;line-height:1}.send-btn{background:var(--text);color:var(--bg)}.disclaimer{color:var(--muted);font-size:10px;text-align:center;margin-top:9px;line-height:1.35}.code-pre{white-space:pre-wrap;overflow:auto;background:var(--soft);padding:12px;border-radius:12px;font:13px/1.55 ui-monospace,Menlo,Consolas,monospace}.copy-small{background:var(--soft);border:1px solid var(--border);border-radius:7px;color:var(--text);padding:5px 9px;font-size:11px;margin:4px 0}.lab-panel{flex:1;min-height:0;overflow:auto;padding:30px max(25px,calc((100% - 760px)/2))}.lab-panel[hidden]{display:none}.lab-heading{display:flex;gap:12px;align-items:center;margin-bottom:17px}.lab-heading h2{margin:0 0 4px;font-size:22px}.lab-heading p{margin:0;color:var(--muted);font-size:13px}.lab-panel textarea{width:100%;min-height:250px;font:13px/1.6 ui-monospace,Menlo,Consolas,monospace;background:var(--surface);border:1px solid var(--border);border-radius:13px;padding:16px;resize:vertical}.labactions{display:flex;gap:8px;flex-wrap:wrap;padding:12px 0}.labactions button{padding:10px 14px;font-size:12px;border:1px solid var(--border);background:var(--surface);border-radius:10px}.labactions .primary{background:var(--purple);border-color:var(--purple);color:white}.lab-panel #laboutput{padding:15px;border-radius:13px;background:var(--soft);white-space:pre-wrap;font:13px/1.6 ui-monospace,monospace}.muted{font-size:12px;color:var(--muted);line-height:1.5}#overlay{display:none}.mobile-close{display:none}@media(max-width:800px){#sidebar{position:absolute;top:0;bottom:0;left:0;transform:translateX(-101%);transition:transform .18s ease;box-shadow:var(--shadow)}#sidebar.open{transform:translateX(0)}#overlay.open{display:block;position:fixed;inset:0;background:#0006;z-index:20}.mobile-close{display:grid}.topbar{padding:0 15px}.main-tabs{padding:8px 14px 0}.messages{padding:12px 19px 19px}.composer-wrap{padding:0 12px 8px}.welcome h1{font-size:26px}.lab-panel{padding:18px}}@media(max-width:360px){.top-right{font-size:10px}.main-tab{padding:9px}.msg.user .msg-body{max-width:94%}.composer-wrap{padding:0 7px 8px}} 

/* Nexo AI 2.1: PIN fixed near the top, never over the message composer. */
.topbar{position:relative;z-index:30}
.pin-top{position:relative;flex-shrink:0}
.pin-top>summary{display:flex;align-items:center;gap:4px;list-style:none;border:1px solid var(--border);border-radius:12px;background:var(--soft);padding:8px 10px;cursor:pointer;font-size:12px;color:var(--text);font-weight:650;white-space:nowrap}
.pin-top>summary::-webkit-details-marker{display:none}
.pin-top[open]>summary{outline:1px solid var(--purple)}
.pin-panel{position:absolute;right:0;top:calc(100% + 12px);z-index:60;background:var(--bg);color:var(--text);width:min(300px,calc(100vw - 30px));padding:15px;border:1px solid var(--border);border-radius:15px;box-shadow:var(--shadow);display:grid;gap:10px;font-size:13px}
.pin-panel:before{content:"";position:absolute;top:-7px;right:20px;width:12px;height:12px;background:var(--bg);border-left:1px solid var(--border);border-top:1px solid var(--border);transform:rotate(45deg)}
.pin-panel label{font-weight:650}
.pin-panel input{border:1px solid var(--border);border-radius:9px;padding:12px;background:var(--surface);min-width:0;width:100%;font-size:16px;color:var(--text)}
.pin-panel small{font-size:11px;color:var(--muted);line-height:1.4}
.pin-panel button{background:var(--purple);border:0;border-radius:10px;color:#fff;padding:10px;font-size:13px;font-weight:650}
@media(max-width:580px){.pin-top>summary{padding:8px}.pin-top>summary span{display:none}.top-right{gap:5px}.topbar{padding:0 13px}}

/* ZIP project output and quick action */
.main-tabs{flex-wrap:wrap}
.zip-prompt{margin-left:auto;border:1px solid var(--border);color:var(--text);background:var(--surface)}
.zip-prompt:hover{border-color:var(--purple)}
.project-download{padding:14px;border:1px solid var(--border);border-radius:14px;background:var(--surface);margin:8px 0 0;width:min(100%,500px);display:grid;gap:6px}
.project-download-title{font-weight:700;font-size:14px}
.project-download-note{font-size:12px;color:var(--muted)}
.project-download-button{border:0;border-radius:10px;background:var(--purple);color:white;font-size:14px;font-weight:650;padding:12px 14px;margin-top:5px;max-width:240px}
@media(max-width:480px){.main-tabs{gap:4px;padding:10px 10px 0}.main-tab{font-size:12px;padding:8px 9px}.zip-prompt{margin-left:0}.project-download-button{max-width:100%}}

/* Previsualización aislada del HTML generado. */
.project-download .secondary-preview{margin-right:8px;background:var(--surface-2,#eceef3);color:var(--text,#161616);border:1px solid var(--border,#ddd)}
.project-download button[disabled]{opacity:.45;cursor:not-allowed}
.project-modal{position:fixed;inset:0;z-index:9999;background:rgba(0,0,0,.75);display:flex;align-items:stretch;justify-content:center;padding:12px}
.project-modal-panel{background:#fff;color:#17202a;border-radius:18px;display:flex;flex-direction:column;width:min(100%,900px);height:100%;overflow:hidden}
.project-modal-header{display:flex;align-items:center;justify-content:space-between;padding:12px 16px;border-bottom:1px solid #e7e7e7}
.project-modal-header button{border-radius:9px;border:1px solid #d1d5db;background:#f4f5f8;padding:8px 12px;color:#151515}
.project-modal-note{padding:8px 16px;margin:0;color:#56606a;font-size:13px}
.project-preview-frame{border:0;flex:1;width:100%;background:white}
@media(max-width:650px){.project-modal{padding:0}.project-modal-panel{border-radius:0}.project-download .secondary-preview{margin:4px 0}}