:root{--ink:#132540;--muted:#58677a;--blue:#2563eb;--paper:#fff;--surface:#f5f7fa;--line:#dce3ec}*{box-sizing:border-box}body{margin:0;font-family:Inter,system-ui,sans-serif;color:var(--ink);background:white}header{height:72px;padding:0 4vw;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line)}.brand{font-size:26px;font-weight:800;letter-spacing:-1px}.brand span{font-size:13px;font-weight:500;letter-spacing:0;margin-left:12px;color:var(--muted)}#version{font-size:13px;color:var(--muted)}main{max-width:1600px;margin:auto}.hero{min-height:calc(100dvh - 72px);display:flex;align-items:flex-start;padding:clamp(20px,4vh,40px) 12vw}.eyebrow{color:var(--blue);font-weight:700;font-size:14px}h1{font-size:clamp(44px,5vw,72px);line-height:1.08;letter-spacing:-3px;margin:14px 0}h1 span{color:var(--blue)}.hero p:not(.eyebrow){font-size:18px;line-height:1.7;max-width:620px;color:var(--muted)}.upload{position:relative;display:inline-block;margin-top:16px;background:var(--blue);color:white;padding:16px 24px;border-radius:8px;font-weight:700;cursor:pointer}.upload input{position:absolute;inset:0;width:100%;height:100%;opacity:0;cursor:pointer}.upload:focus-within{outline:3px solid var(--ink);outline-offset:4px}.hero small{display:block;margin-top:12px;color:var(--muted)}.workspace{display:grid;grid-template-columns:240px minmax(0,1fr)}.hidden{display:none!important}aside{padding:22px;border-right:1px solid var(--line);background:var(--surface);overflow:auto;max-height:calc(100vh - 72px)}.filebox{display:grid;gap:8px;overflow-wrap:anywhere}.filebox span,.muted,.example{font-size:12px;color:var(--muted)}aside h3{font-size:12px;margin-top:28px}.tab{width:100%;text-align:left;margin:3px 0;overflow-wrap:anywhere}.tab.active,.history-entry.active{background:#e8efff;color:#174db4;font-weight:700}.history-entry{font-size:12px;padding:10px;border-radius:6px;line-height:1.6;overflow-wrap:anywhere}.content{min-width:0;display:grid;grid-template-rows:auto minmax(0,1fr) auto;height:calc(100vh - 72px)}.toolbar{padding:14px 20px;display:flex;justify-content:space-between;gap:12px;border-bottom:1px solid var(--line)}.file-actions{display:flex;gap:8px;flex-wrap:wrap}button,#download,#confirm-download{font:inherit;font-size:13px;border:1px solid var(--line);background:white;padding:10px 14px;border-radius:7px;cursor:pointer;color:var(--ink);text-decoration:none;font-weight:600}button:disabled{opacity:.45;cursor:default}button:focus-visible,a:focus-visible,input:focus-visible{outline:3px solid #2563eb;outline-offset:3px}#download.result,#confirm-download,.apply-plan,#ask{background:var(--blue);color:white;border-color:var(--blue)}.preview{min-height:0;display:flex;flex-direction:column}.preview-title{padding:14px 20px;font-size:14px;font-weight:700}.preview-title span{font-weight:400;color:var(--muted);margin-left:12px}#table{overflow:auto;padding:0 20px 20px;min-height:0}table{border-collapse:collapse;width:100%;font-size:13px}th,td{border:1px solid var(--line);padding:10px;text-align:left;white-space:nowrap}th{background:var(--surface);position:sticky;top:0}.chat{display:flex;flex-direction:column;min-height:0;max-height:min(30dvh,260px);border-top:1px solid var(--line);padding:16px 20px;background:var(--surface)}.chat form{display:flex;gap:8px;flex-shrink:0}.chat input{min-width:0;flex:1;padding:13px;border:1px solid var(--line);border-radius:7px;font:inherit;font-size:14px}.example{display:block;margin-top:9px}#messages{flex:1;min-height:0;overflow:auto;margin-bottom:12px;overscroll-behavior:contain}.bot,.user,.plan{padding:14px;border-radius:9px;margin:8px 0;max-width:90%;font-size:14px;line-height:1.5;overflow-wrap:anywhere}.bot,.plan{background:white;border:1px solid var(--line)}.user{background:var(--ink);color:white;margin-left:auto}.plan ol{padding:0;list-style:none;counter-reset:actions}.plan li{counter-increment:actions;display:flex;gap:12px;padding:9px 0}.plan li:before{content:counter(actions,decimal-leading-zero);color:var(--blue);font-weight:700}.plan li small{display:block;color:var(--muted);margin-top:4px}.plan button{margin-top:12px}.plan-meta{color:var(--muted);font-size:12px}.result strong{color:var(--blue)}.confirm-overlay{position:fixed;inset:0;background:#13254088;display:grid;place-items:center;padding:20px;z-index:10}.confirm-card{max-width:520px;background:white;padding:28px;border-radius:12px}.confirm-card p{line-height:1.6;color:var(--muted)}.confirm-actions{display:flex;gap:8px;flex-wrap:wrap}#toast{position:fixed;right:20px;bottom:20px;background:var(--ink);color:white;padding:12px 18px;border-radius:8px;display:none;max-width:calc(100vw - 40px)}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%)}@media(max-width:800px){header{padding:0 18px}.brand span{display:block;margin:2px 0;font-size:11px}.hero{padding:24px}h1{letter-spacing:-2px}.workspace{grid-template-columns:1fr;height:calc(100dvh - 72px);grid-template-rows:auto minmax(0,1fr)}aside{max-height:96px;border-right:0;border-bottom:1px solid var(--line);padding:12px;display:grid;grid-template-columns:1fr 1fr;gap:10px}aside h3{margin:8px 0}#history{max-height:110px;overflow:auto}.content{height:100%;min-height:0;grid-template-rows:auto minmax(0,1fr) auto}.toolbar{flex-wrap:wrap;padding:8px;gap:6px}.bot,.user,.plan{max-width:100%}.chat{padding:12px;max-height:min(28dvh,200px)}}@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important}}
.plan .message-label{margin:0 0 8px}.action-title{margin:0;font-weight:600}.action-detail{display:block;margin:5px 0 0;color:var(--muted);font-size:12px}.history-entry{max-width:100%}
.plan ol{margin:12px 0}.plan li{align-items:flex-start}.plan-meta{margin-top:10px}#version-navigation{margin:0 0 10px}
.workspace .content{height:calc(100dvh - 72px);grid-template-columns:minmax(0,1fr)}
.workspace aside{max-height:calc(100dvh - 72px)}
.feedback-dock{position:fixed;right:max(12px,env(safe-area-inset-right,0px));bottom:max(12px,env(safe-area-inset-bottom,0px));z-index:2}
#open-feedback{display:grid;place-items:center;width:44px;height:44px;padding:0;border-radius:50%;color:var(--muted);background:var(--paper)}
/* Reserve horizontal space only, so feedback never covers the composer. */
.chat{min-width:0;padding-right:76px;padding-bottom:max(16px,env(safe-area-inset-bottom,0px))}
.chat form{min-width:0}
#pending-review:not([hidden]){display:flex;align-items:center;justify-content:space-between;gap:10px;flex-shrink:0;margin:0 0 10px;font-size:12px;color:var(--muted)}
#review-plan{padding:7px 10px;flex-shrink:0}
#plan-dialog{width:min(620px,calc(100vw - 32px));max-height:calc(100dvh - 32px);padding:20px;border:1px solid var(--line);border-radius:12px;color:var(--ink);background:var(--paper);overflow:hidden}
#plan-dialog[open]{display:flex;flex-direction:column}
#plan-dialog::backdrop{background:#13254088}
.plan-heading{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-shrink:0}
.plan-heading h2{margin:0;font-size:20px}
#close-plan{font-size:12px;font-weight:500}
#plan-review{min-height:0;overflow:auto;overscroll-behavior:contain;margin-top:12px}
#plan-review .plan{max-width:100%;margin:0;border:0;padding:4px 4px 12px}
#plan-review .apply-plan{display:block}
.plan li:before{flex-shrink:0;white-space:nowrap}
.plan li>div{min-width:0}
#plan-error{font-size:13px;overflow-wrap:anywhere;flex-shrink:0}
#plan-error:empty{display:none}
#feedback-dialog .confirm-card{width:min(520px,100%);max-height:calc(100dvh - 40px);overflow:auto}
#feedback-dialog .feedback-heading{margin-bottom:20px}
#feedback-dialog .feedback-eyebrow{margin:0 0 8px;color:var(--blue);font-size:11px;font-weight:700;letter-spacing:.08em}
#feedback-dialog h2{margin:0;font-size:24px;letter-spacing:-.6px}
#feedback-dialog #feedback-intro{margin:8px 0 0;font-size:14px;line-height:1.5}
#feedback-dialog .feedback-types{min-width:0;border:0;padding:0;margin:0 0 20px}
#feedback-dialog legend,#feedback-dialog .feedback-label{display:block;margin-bottom:8px;font-size:12px;font-weight:600}
#feedback-dialog .feedback-options{display:flex;gap:6px;padding:4px;border-radius:9px;background:var(--surface);border:1px solid var(--line)}
#feedback-dialog .feedback-options label{position:relative;flex:1;min-width:0}
#feedback-dialog .feedback-options input{position:absolute;opacity:0;width:1px;height:1px}
#feedback-dialog .feedback-options span{display:block;padding:9px 12px;border:1px solid transparent;border-radius:6px;text-align:center;font-size:13px;font-weight:600;color:var(--muted);cursor:pointer}
#feedback-dialog .feedback-options input:checked+span{color:var(--blue);background:var(--paper);border-color:var(--line)}
#feedback-dialog .feedback-options input:focus-visible+span{outline:3px solid var(--blue);outline-offset:2px}
#feedback-dialog textarea{display:block;width:100%;min-width:0;min-height:112px;max-height:35vh;resize:vertical;padding:12px 14px;border:1px solid var(--line);border-radius:8px;font:inherit;font-size:14px;line-height:1.5;color:var(--ink);background:var(--paper)}
#feedback-dialog textarea::placeholder{color:var(--muted)}
#feedback-dialog #feedback-counter{display:block;margin-top:7px;text-align:right;font-size:11px;color:var(--muted)}
#feedback-dialog #feedback-privacy{margin-top:14px;padding-top:12px;border-top:1px solid var(--line)}
#feedback-dialog #feedback-privacy p{margin:0 0 5px;font-size:11px;line-height:1.5}
#feedback-dialog #feedback-status{margin:14px 0 0;font-size:13px;line-height:1.5;overflow-wrap:anywhere}
#feedback-dialog #feedback-status:empty{display:none}
#feedback-dialog #feedback-status[data-state="success"]{padding:11px 12px;border:1px solid var(--line);border-radius:8px;color:var(--ink);background:var(--surface)}
#feedback-dialog #feedback-status[data-state="error"]{padding:11px 12px;border-left:3px solid var(--ink);background:var(--surface);color:var(--ink)}
#feedback-dialog .feedback-actions{display:flex;justify-content:flex-end;flex-wrap:wrap;gap:8px;margin-top:20px}
#feedback-dialog #send-feedback{background:var(--blue);border-color:var(--blue);color:var(--paper)}
#feedback-dialog #close-feedback{border-color:transparent;background:transparent;color:var(--muted)}
@media(max-width:480px){#feedback-dialog{padding:12px}#feedback-dialog .feedback-card{width:100%;max-height:calc(100dvh - 24px);padding:20px}#feedback-dialog h2{font-size:21px}}
#feedback-dialog select:focus-visible,#feedback-dialog textarea:focus-visible{outline:3px solid var(--blue);outline-offset:3px}
#toast{bottom:calc(76px + env(safe-area-inset-bottom,0px));z-index:3}
@media(max-width:800px){.workspace .content{height:100%;min-height:0}.workspace aside{max-height:96px}.chat{padding-right:68px;padding-bottom:max(12px,env(safe-area-inset-bottom,0px))}#feedback-dialog .confirm-card{padding:20px}}
@media(max-width:480px){#plan-dialog{padding:14px;width:calc(100vw - 24px);max-height:calc(100dvh - 24px)}.plan-heading{align-items:flex-start}.plan-heading h2{font-size:18px}#pending-review:not([hidden]){gap:6px}}
#beta-privacy{margin-top:12px;max-width:620px;font-size:13px;color:var(--muted)}
#beta-privacy summary{cursor:pointer;line-height:1.5}
#beta-privacy p{font-size:13px;line-height:1.5}
.chat .example,#version-navigation{flex-shrink:0}
@media(max-height:700px) and (min-width:801px){.hero{padding-top:16px;padding-bottom:16px}h1{font-size:clamp(44px,7vh,60px);margin:12px 0}}
@media(max-height:480px){.workspace{height:auto}.workspace .content{height:400px;min-height:0}.workspace aside{max-height:96px}}
.hero #upload-state:empty{display:none}
@media(max-height:700px){.hero{padding-top:16px;padding-bottom:12px}.hero small{margin-top:8px}.hero h1{margin:12px 0}.hero .upload{margin-top:12px}}