:root{--bg:#f6f5f2;--panel:#fff;--ink:#16181b;--muted:#5d636b;--line:#e3e1dc;--accent:#1f5eff;--accent-ink:#fff;--warn:#8a5a00;--warn-bg:#fff4dc;--ok:#106b3a;--radius:16px;--shadow:0 1px 2px rgb(0 0 0/.04),0 8px 24px -12px rgb(0 0 0/.12);font-synthesis:none}
@media (prefers-color-scheme:dark){:root{--bg:#111214;--panel:#1a1c1f;--ink:#eceef1;--muted:#a1a7b0;--line:#2b2e33;--accent:#6b93ff;--accent-ink:#0b0d10;--warn:#ffcf6b;--warn-bg:#2d2412;--ok:#5fd19a}}
*{box-sizing:border-box}
html,body{height:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:15px/1.5 -apple-system,BlinkMacSystemFont,"SF Pro Text","Segoe UI",Roboto,sans-serif;-webkit-font-smoothing:antialiased}
[hidden]{display:none!important}
button,input,textarea,select{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.visually-hidden{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.muted{color:var(--muted)}.small{font-size:13px}
.error{color:#c23b22;min-height:1.2em;margin:4px 0}
.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}
.brand{font-weight:700;letter-spacing:-.02em;font-size:18px}.brand span{font-weight:500;font-size:11px;text-transform:uppercase;letter-spacing:.12em;color:var(--muted);margin-left:6px;vertical-align:2px}
button{cursor:pointer;border:0;background:none}
.primary{background:var(--ink);color:var(--bg);border-radius:999px;padding:10px 18px;font-weight:600;transition:transform .15s,opacity .15s}
.primary:hover{opacity:.9}.primary:active{transform:scale(.98)}.primary:disabled{opacity:.4;cursor:default}
.primary.small,.ghost.small{padding:7px 13px;font-size:13px}
.ghost{border:1px solid var(--line);border-radius:999px;padding:9px 15px;background:var(--panel);text-decoration:none;display:inline-flex;align-items:center}
.ghost[aria-pressed=true]{background:var(--ink);color:var(--bg);border-color:var(--ink)}
input,textarea,select{width:100%;background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:11px 13px}
label{display:block;font-weight:600;font-size:14px;margin:12px 0 6px}

.gate{min-height:100%;display:grid;place-items:center;padding:24px}
.gate-card{width:min(420px,100%);padding:32px}.gate-card h1{font-size:26px;letter-spacing:-.03em;margin:18px 0 6px}.gate-card .primary{width:100%;margin-top:8px}

.topbar{position:sticky;top:0;z-index:5;display:flex;align-items:center;gap:12px;padding:12px 20px;border-bottom:1px solid var(--line);background:color-mix(in srgb,var(--bg) 85%,transparent);backdrop-filter:blur(14px)}
.home-body{max-width:760px;margin:0 auto;padding:40px 20px}
.home-body h1{font-size:clamp(28px,5vw,40px);letter-spacing:-.035em;margin:0 0 20px}
.new-project{padding:20px}.row{display:flex;gap:10px}.row input{flex:1}
.section-title{font-size:15px;color:var(--muted);font-weight:600;margin:36px 0 10px}
.project-list{list-style:none;margin:0;padding:0;display:grid;gap:8px}
.project-list button{width:100%;text-align:left;padding:14px 16px;border-radius:12px;background:var(--panel);border:1px solid var(--line);display:flex;justify-content:space-between;gap:12px}

.workspace{height:100dvh;display:flex;flex-direction:column}
.title-wrap{flex:1;min-width:0}.project-title{font-weight:650;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.tabs{display:none;gap:4px;background:var(--panel);border:1px solid var(--line);border-radius:999px;padding:3px}
.tabs button{padding:6px 12px;border-radius:999px;font-size:13px}.tabs button[aria-selected=true]{background:var(--ink);color:var(--bg)}
.panes{flex:1;min-height:0;display:grid;grid-template-columns:minmax(340px,420px) 1fr}
.chat-pane{display:flex;flex-direction:column;min-height:0;border-right:1px solid var(--line);background:var(--panel)}
.messages{flex:1;overflow:auto;list-style:none;margin:0;padding:20px;display:flex;flex-direction:column;gap:10px}
.msg{max-width:88%;padding:10px 14px;border-radius:18px;white-space:pre-wrap;overflow-wrap:anywhere}
.msg.user{align-self:flex-end;background:var(--ink);color:var(--bg);border-bottom-right-radius:6px}
.msg.assistant{align-self:flex-start;background:var(--bg);border:1px solid var(--line);border-bottom-left-radius:6px}
.msg .meta{display:block;font-size:11px;opacity:.7;margin-top:4px}
.msg.intro{align-self:stretch;max-width:none;background:transparent;border:1px dashed var(--line);color:var(--muted)}
.hold-banner,.proposal-banner{display:flex;align-items:center;gap:12px;justify-content:space-between;margin:0 16px 10px;padding:10px 14px;border-radius:12px;background:var(--warn-bg);color:var(--warn);font-size:13px}
.proposal-banner{margin:10px 16px 0}
.composer{padding:12px 16px 16px;border-top:1px solid var(--line);padding-bottom:max(16px,env(safe-area-inset-bottom))}
.composer textarea{resize:vertical;min-height:72px;max-height:40vh}
.composer-meta{display:flex;justify-content:space-between;gap:10px;min-height:20px;margin-top:6px}
.composer-bar{display:flex;align-items:center;gap:8px;margin-top:6px}.composer-bar .spacer{flex:1}

.preview-pane{display:flex;flex-direction:column;min-height:0;min-width:0}
.preview-bar{display:flex;flex-wrap:wrap;align-items:center;gap:8px;padding:10px 16px;border-bottom:1px solid var(--line)}
.preview-bar select{width:auto;padding:7px 10px;border-radius:999px;font-size:13px}
.spacer{flex:1}
.seg{display:flex;border:1px solid var(--line);border-radius:999px;overflow:hidden}.seg button{padding:6px 12px;font-size:13px}.seg button[aria-pressed=true]{background:var(--ink);color:var(--bg)}
.badge{font-size:12px;padding:3px 9px;border-radius:999px;border:1px solid var(--line);color:var(--muted)}.badge.current{color:var(--ok);border-color:currentColor}.badge.proposal{color:var(--warn);border-color:currentColor}
.stage{flex:1;min-height:0;position:relative;display:flex;justify-content:center;background:repeating-conic-gradient(var(--bg) 0 25%,color-mix(in srgb,var(--line) 40%,var(--bg)) 0 50%) 0 0/24px 24px;overflow:auto;padding:16px}
.stage iframe{width:100%;height:100%;min-height:600px;border:0;border-radius:12px;background:#fff;box-shadow:var(--shadow);transition:width .3s cubic-bezier(.2,.8,.2,1)}
.stage.mobile iframe{width:390px;max-width:100%}
.empty{position:absolute;inset:0;display:grid;place-items:center;color:var(--muted);text-align:center;padding:24px}
.warnings{padding:0 16px 10px;margin:6px 0 0}

@media (max-width:860px){
  .tabs{display:flex}
  .panes{grid-template-columns:1fr}
  .panes[data-view=chat] .preview-pane,.panes[data-view=preview] .chat-pane{display:none}
  .chat-pane{border-right:0}
  .stage{padding:8px}.stage iframe{min-height:0}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}

.attachments{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:8px}.attachments:empty{display:none}
.chip{display:flex;align-items:center;gap:8px;padding:6px 8px;border:1px solid var(--line);border-radius:12px;background:var(--bg);font-size:12px;max-width:100%}
.chip img{width:40px;height:40px;object-fit:cover;border-radius:8px;background:var(--line)}
.chip select{width:auto;padding:4px 6px;border-radius:8px;font-size:12px}
.chip .name{max-width:120px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.chip button{padding:2px 6px;border-radius:6px;color:var(--muted)}
.chip.uploading{opacity:.6}
.msg .files{display:flex;flex-wrap:wrap;gap:6px;margin-top:8px}
.msg .files img{width:72px;height:72px;object-fit:cover;border-radius:10px;border:1px solid rgb(255 255 255/.25)}
.msg .files span{font-size:11px;padding:4px 8px;border-radius:8px;background:rgb(255 255 255/.15)}

.dictation{display:flex;flex-wrap:wrap;align-items:center;gap:8px 10px;margin-bottom:8px;padding:10px 12px;border-radius:12px;background:var(--bg);border:1px solid var(--line);font-size:13px}
.dictation-status{flex:1;min-width:140px}.dictation-actions{display:flex;gap:6px;margin-left:auto}
.rec-dot{width:10px;height:10px;border-radius:50%;background:#d93025}
.dictation[data-state=listening] .rec-dot{animation:pulse 1.2s ease-in-out infinite}
.dictation[data-state=paused] .rec-dot,.dictation[data-state=notice] .rec-dot{background:var(--muted)}
.dictation[data-state=notice] .dictation-actions,.dictation[data-state=notice] .wave{display:none}
.wave{display:inline-flex;align-items:center;gap:2px;height:18px}.wave i{width:3px;height:6px;border-radius:2px;background:var(--ink);opacity:.7}
.dictation[data-state=listening] .wave i{animation:wave 1s ease-in-out infinite}.wave i:nth-child(2){animation-delay:.15s}.wave i:nth-child(3){animation-delay:.3s}.wave i:nth-child(4){animation-delay:.45s}.wave i:nth-child(5){animation-delay:.6s}
#mic[aria-pressed=true]{background:#d93025;color:#fff;border-color:#d93025}
@keyframes pulse{50%{opacity:.35}}@keyframes wave{50%{height:18px}}
@media (max-width:860px){.dictation-actions{width:100%;justify-content:flex-end}}