/* App screens (upload · converting · result · error · history). Ported from mockups/app-*.html */
[hidden]{display:none!important}
.app-main{padding-top:24px;padding-bottom:64px}
.app-grid{display:grid;gap:20px}
.app-grid>*{min-width:0}
@media(min-width:1024px){.app-grid{grid-template-columns:minmax(0,1fr) 360px;gap:28px;align-items:start}}
.page-head{display:flex;align-items:end;justify-content:space-between;gap:16px;margin-bottom:16px}
.page-head>*{min-width:0}
.page-head h1{overflow-wrap:anywhere}
.side{display:grid;gap:16px}
.section-label{display:flex;justify-content:space-between;align-items:center;margin-bottom:10px}

/* result view tabs + swatches */
.viewtabs{display:inline-flex;border:var(--border-control);border-radius:var(--radius-md);padding:2px;background:var(--ink-sheet-sunk);gap:2px}
.viewtabs button{font:500 13px var(--font-mono);letter-spacing:.02em;border:1px solid transparent;background:none;padding:0 12px;min-height:34px;border-radius:3px;cursor:pointer;color:var(--ink-muted)}
.viewtabs [aria-selected=true]{background:var(--ink-sheet);border-color:var(--ink-text);color:var(--ink-text)}
@media(pointer:coarse){.viewtabs button{min-height:44px}}
.swatches{display:flex;gap:0;border:var(--border-hair)}
.swatches span{flex:1;height:20px}
.swatches:empty{display:none}

/* state visibility: elements with data-show="a b" show only in those states */
#app[data-state=idle] [data-show]:not([data-show~=idle]){display:none!important}
#app[data-state=ready] [data-show]:not([data-show~=ready]){display:none!important}
#app[data-state=converting] [data-show]:not([data-show~=converting]){display:none!important}
#app[data-state=result] [data-show]:not([data-show~=result]){display:none!important}
#app[data-state=error] [data-show]:not([data-show~=error]){display:none!important}
@media(min-width:768px){#app .viewtabs.only-mobile{display:none!important}}
@media(max-width:767px){#app .viewtabs.only-desktop,#app .btn.only-desktop{display:none!important}}
#app[data-state=error] [data-ruler]{display:none}

/* artboard states (SPEC §5.3) */
.artboard .meta-label-accent{color:var(--ink-accent)}
#app:not([data-state=idle]) .artboard{border-style:solid;border-color:var(--ink-rule)}
#app[data-state=idle] .artboard,#app[data-state=ready] .artboard{cursor:pointer}
#app[data-state=converting] .artboard{overflow:hidden}
#app[data-state=result] .artboard{border-color:var(--ink-text)}
#app[data-state=error] .artboard{border-color:var(--ink-danger)}
.artboard.is-over{border:1px solid var(--ink-accent)!important;background-color:#FDF6F2}
.artboard:focus-visible{border-radius:0}
.board-preview{width:100%;display:grid;place-items:center}
.preview-raster{position:relative;width:min(340px,70%)}
.preview-raster img,.preview-svg img{display:block;width:100%;height:auto;max-height:440px;object-fit:contain}
#app[data-state=converting] .preview-raster img{opacity:.55}
#app[data-state=error] .preview-raster{width:min(300px,64%)}
#app[data-state=error] .preview-raster img{opacity:.4;filter:grayscale(1)}
.preview-svg{width:min(360px,74%)}
.preview-compare{position:relative;width:100%;display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:16px;padding-top:12px;align-self:stretch}
.preview-compare .half{min-width:0;display:grid;gap:10px;align-content:center;text-align:left}
.preview-compare .half .label{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.preview-compare img{display:block;width:100%;height:auto;max-height:420px;object-fit:contain}
.preview-compare .divider{position:absolute;top:0;bottom:0;left:50%;width:1px;background:var(--ink-text)}
.preview-compare .divider i{position:absolute;top:50%;left:-5px;width:11px;height:11px;background:var(--ink-accent);transform:translateY(-50%)}
.artboard-meta .label{max-width:60%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.artboard-meta .link-btn{min-height:24px}
.steps .s{display:flex;gap:6px;align-items:center}
#slow-hint{display:flex;gap:6px;align-items:center}
#slow-hint[hidden]{display:none}
.hint.err[hidden]{display:none}
.copy-ok{color:var(--ink-success)}

/* mobile nav menu */
@media(max-width:767px){
  .nav.is-open .nav-links{display:flex;position:absolute;top:var(--nav-height);left:0;right:0;z-index:20;flex-direction:column;gap:0;background:var(--ink-paper);border-bottom:var(--border-hair);padding:4px var(--container-pad) 12px}
  .nav.is-open .nav-links a{padding:12px 0;min-height:var(--tap-min);border-bottom:var(--border-hair)}
}
.nav{position:relative;z-index:10}

/* history (SPEC §6) — ruled table, not cards */
.history-empty{min-height:340px}
.history{width:100%;border-collapse:collapse;border-top:var(--border-ink)}
.history th{text-align:left;padding:10px 8px;border-bottom:var(--border-hair);font-weight:500}
.history td{padding:8px;border-bottom:var(--border-hair);vertical-align:middle;font-size:14px}
.history td.file{font-family:var(--font-mono);font-size:13px;overflow-wrap:anywhere}
.history td.date{font-family:var(--font-mono);font-size:13px;white-space:nowrap}
.history .thumb{width:40px;height:40px;border:var(--border-hair);background:var(--ink-sheet);display:block;object-fit:contain}
.history .expiring{display:block;color:var(--ink-warning);font-size:11px;letter-spacing:var(--tracking-mono);text-transform:uppercase}
.history td:last-child{text-align:right;width:52px}
@media(max-width:767px){.history .only-desktop{display:none}}
.history th:first-child,.history td:first-child{width:56px}

/* mock auth (app only): chip/avatar when signed in, "Sign in" when out; settings swap for the auth panel */
html:not([data-auth=in]) [data-when=in],html:not([data-auth=out]) [data-when=out]{display:none!important}
html[data-auth=out] #app[data-state=ready] #settings,html:not([data-auth=out]) #auth-panel{display:none!important}