/* ============================================================
   studio.css — the Studio (studio.html)
   Built on the tokens in main.css, so both themes come for free.
   Layout state is driven by data-* attributes on .studio:
     data-panel="right|bottom"   where the Preview/Terminal panel sits
     data-side="open|closed"     side bar (a drawer on phones)
     data-panel-open="true|false"
   ============================================================ */

/* ---------- page frame ---------- */
.studio-page .nav{background:color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter:blur(20px) saturate(180%);-webkit-backdrop-filter:blur(20px) saturate(180%);
  border-bottom-color:var(--line)}
.studio-page .bot-fab{bottom:calc(clamp(14px,3vw,26px) + 26px);transform:scale(.86)}
.studio-page .bot-fab:hover{transform:scale(.94) rotate(6deg)}
.st-main{padding-top:var(--nav-h)}

.studio{
  --side-w:250px; --panel-size:340px;
  --st-act:46px; --st-top:44px; --st-status:24px; --st-tabs:36px;
  --st-hover:color-mix(in srgb, var(--text) 6%, transparent);
  --st-sel:color-mix(in srgb, var(--brand) 22%, transparent);
  position:relative;z-index:2;display:flex;flex-direction:column;
  height:calc(100dvh - var(--nav-h));min-height:540px;
  background:var(--bg);color:var(--text);font-size:13px;line-height:1.45;
  border-bottom:1px solid var(--line);overflow:hidden;outline:none;
}
.studio svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:1.8;
  stroke-linecap:round;stroke-linejoin:round;flex:none}
.studio kbd{font-family:var(--f-mono);font-size:.68rem;padding:.05rem .35rem;border-radius:5px;
  border:1px solid var(--line-hi);color:var(--text-dim);background:var(--surface)}
.st-flex{flex:1}
.studio [hidden]{display:none!important}

/* ---------- shared controls ---------- */
.st-icon{display:inline-grid;place-items:center;width:30px;height:30px;border-radius:7px;
  color:var(--text-soft);transition:background var(--d-fast),color var(--d-fast)}
.st-icon:hover{background:var(--st-hover);color:var(--text)}
.st-icon.sm{width:24px;height:24px;border-radius:5px}
.st-icon.sm svg{width:15px;height:15px}
.st-btn{display:inline-flex;align-items:center;gap:.4rem;height:30px;padding:0 .8rem;border-radius:8px;
  border:1px solid var(--line-hi);background:var(--surface);color:var(--text);font-size:12.5px;font-weight:550;
  white-space:nowrap;transition:background var(--d-fast),border-color var(--d-fast),transform var(--d-fast)}
.st-btn:hover{background:var(--surface-hi);border-color:var(--brand)}
.st-btn:active{transform:scale(.97)}
.st-btn svg{width:13px;height:13px}
.st-btn-primary,.st-btn-run{background:var(--brand);border-color:transparent;color:#fff;
  box-shadow:0 6px 18px -8px rgba(13,148,136,.9)}
.st-btn-primary:hover,.st-btn-run:hover{background:var(--brand-hi);border-color:transparent}
.st-btn-run kbd,.st-btn-primary kbd{color:#fff;border-color:rgba(255,255,255,.35);background:rgba(0,0,0,.22)}
.st-btn-stop{color:var(--rose);border-color:rgba(251,113,133,.45)}
.st-btn-stop:hover{border-color:var(--rose);background:rgba(251,113,133,.1)}
.st-btn-danger{background:var(--rose);border-color:transparent;color:#fff}
.st-btn-danger:hover{background:#f43f5e;border-color:transparent}
.studio :focus-visible{outline:2px solid var(--brand-hi);outline-offset:-2px;border-radius:5px}

/* ---------- title bar ---------- */
.st-top{display:flex;align-items:center;gap:.5rem;height:var(--st-top);padding:0 .6rem 0 .5rem;
  border-bottom:1px solid var(--line);background:var(--bg);flex:none}
.st-brand{display:flex;align-items:center;gap:.5rem;padding-right:.4rem;font-family:var(--f-display);
  font-weight:600;font-size:.95rem;letter-spacing:-.02em}
.st-brand-mark{display:grid;place-items:center;width:26px;height:26px;border-radius:7px;
  background:var(--grad-brand);color:#07070b;font:700 .62rem var(--f-mono)}
.st-project select{appearance:none;height:30px;max-width:240px;padding:0 1.9rem 0 .7rem;border-radius:8px;
  border:1px solid var(--line);background:var(--surface);font-size:12.5px;color:var(--text);cursor:pointer;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%236e7489' stroke-width='2.4' stroke-linecap='round'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right .55rem center;background-size:13px}
.st-project select:hover{border-color:var(--line-hi)}
.st-project select option{background:var(--bg-elev);color:var(--text)}
.st-mobile-only{display:none}

/* ---------- body grid ---------- */
.st-body{position:relative;display:flex;flex:1;min-height:0}
.st-activity{display:flex;flex-direction:column;align-items:center;gap:.2rem;width:var(--st-act);
  padding:.4rem 0;border-right:1px solid var(--line);background:var(--bg);flex:none}
.st-act{position:relative;display:grid;place-items:center;width:38px;height:38px;border-radius:9px;
  color:var(--text-dim);transition:color var(--d-fast),background var(--d-fast)}
.st-act svg{width:20px;height:20px;stroke-width:1.6}
.st-act:hover{color:var(--text)}
.st-act.active{color:var(--text);background:var(--st-hover)}
.st-act.active::before{content:"";position:absolute;left:-4px;top:8px;bottom:8px;width:2px;border-radius:2px;
  background:var(--brand)}

/* side bar */
.st-side{width:var(--side-w);min-width:160px;max-width:60vw;display:flex;flex-direction:column;
  background:var(--bg);flex:none;min-height:0;overflow:hidden}
.studio[data-side="closed"] .st-side,.studio[data-side="closed"] .st-sash-side{display:none}
.st-view{display:flex;flex-direction:column;flex:1;min-height:0}
.st-view-head{display:flex;align-items:center;gap:.1rem;height:34px;padding:0 .5rem 0 .9rem;flex:none;
  font:600 .66rem var(--f-body);letter-spacing:.12em;text-transform:uppercase;color:var(--text-dim)}
.st-view-body{flex:1;overflow-y:auto;padding:.2rem .9rem 1rem}

/* ---------- file tree ---------- */
.st-tree-title{padding:.2rem .9rem .35rem;font-weight:650;font-size:.72rem;text-transform:uppercase;
  letter-spacing:.06em;color:var(--text-soft);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;flex:none}
.st-tree{flex:1;overflow:auto;padding-bottom:.6rem;outline:none;position:relative}
.st-tree.drop-root{background:color-mix(in srgb, var(--brand) 8%, transparent)}
.st-row{position:relative;display:flex;align-items:center;gap:.35rem;height:24px;
  padding:0 .3rem 0 calc(.55rem + var(--d,0) * 14px);cursor:pointer;color:var(--text-soft);
  white-space:nowrap;user-select:none;border:1px solid transparent}
.st-row:hover{background:var(--st-hover);color:var(--text)}
.st-row.active{color:var(--text);background:var(--st-sel)}
.st-row.selected{border-color:color-mix(in srgb, var(--brand) 55%, transparent)}
.st-row.drop{background:color-mix(in srgb, var(--brand) 18%, transparent);border-color:var(--brand)}
.st-chev{width:12px;height:12px;display:grid;place-items:center;color:var(--text-dim);flex:none;
  transition:transform var(--d-fast)}
.st-chev svg{width:12px;height:12px;stroke-width:2.4}
.st-row.open .st-chev{transform:rotate(90deg)}
.st-ficon{display:inline-grid;place-items:center;min-width:16px;height:14px;padding:0 2px;border-radius:3px;
  font:700 8.5px/1 var(--f-mono);letter-spacing:-.04em;color:var(--c,#8b93a7);flex:none}
.st-ficon.folder{color:var(--amber)}
.st-ficon.folder svg{width:15px;height:15px;stroke-width:1.7}
.st-name{overflow:hidden;text-overflow:ellipsis;flex:1;min-width:0}
.st-row .st-entry{font:600 9px var(--f-mono);color:var(--brand-hi);border:1px solid color-mix(in srgb, var(--brand) 40%, transparent);
  padding:0 .3rem;border-radius:4px;text-transform:uppercase;letter-spacing:.05em}
.st-row .st-more{opacity:0;width:20px;height:20px;border-radius:4px;display:grid;place-items:center;color:var(--text-dim)}
.st-row:hover .st-more,.st-row.selected .st-more{opacity:1}
.st-row .st-more:hover{background:var(--st-hover);color:var(--text)}
.st-row .st-more svg{width:14px;height:14px}
.st-row input{flex:1;min-width:0;height:20px;padding:0 .35rem;border-radius:4px;font:inherit;font-size:12.5px;
  background:var(--bg-elev);color:var(--text);border:1px solid var(--brand);outline:none}
.st-row input.bad{border-color:var(--rose)}
.st-drop-hint{padding:.5rem .9rem .8rem;font-size:.7rem;color:var(--text-dim);flex:none}

/* ---------- sashes ---------- */
.st-sash{flex:none;position:relative;z-index:5;background:var(--line);transition:background var(--d-fast)}
.st-sash::after{content:"";position:absolute;inset:-4px}
.st-sash:hover,.st-sash.dragging{background:var(--brand)}
.st-sash-side{width:1px;cursor:col-resize}
.studio[data-panel="right"] .st-sash-panel{width:1px;cursor:col-resize}
.studio[data-panel="bottom"] .st-sash-panel{height:1px;cursor:row-resize}
.studio.st-dragging iframe{pointer-events:none}
.studio.st-dragging{user-select:none}

/* ---------- work area: editor + panel ---------- */
.st-work{flex:1;display:flex;min-width:0;min-height:0}
.studio[data-panel="bottom"] .st-work{flex-direction:column}
.st-editor-area{flex:1;display:flex;flex-direction:column;min-width:0;min-height:0;background:var(--bg-elev)}
.st-panel{display:flex;flex-direction:column;min-width:0;min-height:0;background:var(--bg-elev);flex:none}
.studio[data-panel="right"] .st-panel{width:var(--panel-size);min-width:220px;max-width:75%}
.studio[data-panel="bottom"] .st-panel{height:var(--panel-size);min-height:120px;max-height:80%}
.studio[data-panel-open="false"] .st-panel,.studio[data-panel-open="false"] .st-sash-panel{display:none}

/* tabs */
.st-tabs{display:flex;height:var(--st-tabs);background:var(--bg);border-bottom:1px solid var(--line);
  overflow-x:auto;overflow-y:hidden;flex:none;scrollbar-width:none}
.st-tabs::-webkit-scrollbar{display:none}
.st-tab{position:relative;display:flex;align-items:center;gap:.45rem;padding:0 .4rem 0 .8rem;min-width:0;
  border-right:1px solid var(--line);color:var(--text-dim);cursor:pointer;white-space:nowrap;flex:none;
  font-size:12.5px;transition:color var(--d-fast),background var(--d-fast)}
.st-tab:hover{color:var(--text-soft);background:var(--st-hover)}
.st-tab.active{color:var(--text);background:var(--bg-elev)}
.st-tab.active::after{content:"";position:absolute;left:0;right:0;top:0;height:2px;background:var(--brand)}
.st-tab.active::before{content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;background:var(--bg-elev)}
.st-tab-dir{color:var(--text-dim);font-size:11px}
.st-tab-x{position:relative;width:20px;height:20px;border-radius:5px;display:grid;place-items:center;color:var(--text-dim)}
.st-tab-x svg{width:13px;height:13px;stroke-width:2}
.st-tab-x:hover{background:var(--st-hover);color:var(--text)}
.st-tab .st-tab-x svg{opacity:0}
.st-tab.active .st-tab-x svg,.st-tab:hover .st-tab-x svg{opacity:1}
/* dirty: a dot that turns back into × on hover, like VS Code */
.st-tab.dirty .st-tab-x::before{content:"";position:absolute;inset:0;margin:auto;width:8px;height:8px;border-radius:50%;
  background:var(--text-soft)}
.st-tab.dirty .st-tab-x svg{opacity:0}
.st-tab.dirty .st-tab-x:hover::before{display:none}
.st-tab.dirty .st-tab-x:hover svg{opacity:1}

.st-crumbs{display:flex;align-items:center;gap:.2rem;height:24px;padding:0 .9rem;font-size:12px;color:var(--text-dim);
  white-space:nowrap;overflow:hidden;flex:none}
.st-crumbs span+span::before{content:"›";margin:0 .35rem 0 .15rem;opacity:.6}
.st-crumbs span:last-child{color:var(--text-soft)}

.st-editor-stack{position:relative;flex:1;min-height:0}
.st-editor,.st-media,.st-empty{position:absolute;inset:0}
.st-loading{display:flex;align-items:center;justify-content:center;gap:.6rem;height:100%;color:var(--text-dim);font-size:12.5px}

/* fallback editor */
.st-basic{display:flex;height:100%;font:13px/21px var(--f-mono)}
.st-basic-gutter{flex:none;min-width:3.2em;padding:10px .8em 40px .6em;margin:0;text-align:right;color:var(--text-dim);
  opacity:.7;overflow:hidden;user-select:none;font:inherit;background:var(--bg-elev)}
.st-basic-ta{flex:1;resize:none;padding:10px 1rem 40px .4rem;font:inherit;color:var(--text);background:var(--bg-elev);
  white-space:pre;overflow:auto;tab-size:2;caret-color:var(--brand-hi)}

/* image / binary viewer */
.st-media{display:grid;place-items:center;padding:1.5rem;overflow:auto;text-align:center;color:var(--text-dim)}
.st-media img{max-width:100%;max-height:70%;border-radius:8px;box-shadow:var(--sh-md);
  background:repeating-conic-gradient(var(--surface-hi) 0 25%, transparent 0 50%) 0 0/16px 16px}
.st-media p{margin-top:.8rem;font-size:12px;color:var(--text-dim)}

/* no open editors */
.st-empty{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:1.5rem;color:var(--text-dim)}
.st-empty-mark{font:700 3.2rem var(--f-mono);letter-spacing:-.08em;background:var(--grad-brand);
  -webkit-background-clip:text;background-clip:text;color:transparent;opacity:.5}
.st-empty dl{display:grid;grid-template-columns:auto auto;gap:.55rem 1.2rem;font-size:12.5px}
.st-empty dt{text-align:right}

/* ---------- panel ---------- */
.st-panel-head{display:flex;align-items:center;gap:.15rem;height:34px;padding:0 .4rem 0 .5rem;flex:none;
  border-bottom:1px solid var(--line)}
.st-ptab{position:relative;height:100%;padding:0 .7rem;font:600 .66rem var(--f-body);letter-spacing:.1em;
  text-transform:uppercase;color:var(--text-dim);display:flex;align-items:center;gap:.4rem}
.st-ptab:hover{color:var(--text-soft)}
.st-ptab.active{color:var(--text)}
.st-ptab.active::after{content:"";position:absolute;left:.7rem;right:.7rem;bottom:-1px;height:2px;background:var(--brand);border-radius:2px}
.st-badge{min-width:16px;height:16px;padding:0 4px;border-radius:99px;background:var(--rose);color:#fff;
  font:700 9.5px/16px var(--f-body);letter-spacing:0;text-align:center}
.st-pbody{flex:1;display:flex;flex-direction:column;min-height:0}

.st-urlbar{display:flex;align-items:center;gap:.15rem;padding:.35rem .5rem;border-bottom:1px solid var(--line);flex:none}
.st-url{flex:1;display:flex;align-items:center;gap:.5rem;height:26px;margin:0 .3rem;padding:0 .7rem;border-radius:99px;
  background:var(--bg);border:1px solid var(--line);font:12px var(--f-mono);color:var(--text-soft);
  min-width:0;white-space:nowrap;overflow:hidden}
.st-url #st-url-text{overflow:hidden;text-overflow:ellipsis}
.st-live{display:inline-flex;align-items:center;gap:.3rem;font:700 9px var(--f-body);letter-spacing:.1em;
  text-transform:uppercase;color:var(--lime)}
.st-live i{width:6px;height:6px;border-radius:50%;background:var(--lime);box-shadow:0 0 0 0 rgba(163,230,53,.6);
  animation:pulse 2.4s infinite}
.st-live.flash i{background:var(--cyan)}
.st-frame-wrap{position:relative;flex:1;min-height:0;background:#fff}
.st-frame-wrap iframe{display:block;width:100%;height:100%;border:0;background:#fff}
.st-noweb{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:.5rem;padding:1.5rem;text-align:center;background:var(--bg-elev);color:var(--text-soft);font-size:12.5px}
.st-noweb b{color:var(--text)}
.st-noweb code,.st-run-view code{font-family:var(--f-mono);font-size:.92em;color:var(--cyan)}
.st-noweb .st-btn{margin-top:.5rem}

/* terminal */
.st-term{flex:1;overflow:auto;padding:.6rem .9rem;font:12.5px/1.6 var(--f-mono);color:var(--text-soft);
  white-space:pre-wrap;word-break:break-word;outline:none}
.st-line{padding:1px 0}
.st-line.out{color:var(--text)}
.st-line.err{color:var(--rose)}
.st-line.warn{color:var(--amber)}
.st-line.info{color:var(--cyan)}
.st-line.sys{color:var(--text-dim)}
.st-line.ok{color:var(--lime)}
.st-line.cmd{margin-top:.6rem;color:var(--text);font-weight:500}
.st-line.cmd:first-child{margin-top:0}
.st-line.cmd::before{content:"❯ ";color:var(--brand-hi)}
.st-line .st-src{display:inline-block;margin-right:.5rem;padding:0 .35rem;border-radius:4px;font-size:10px;
  color:var(--text-dim);background:var(--surface-hi);vertical-align:1px}
.st-line .st-loc{color:var(--text-dim);margin-left:.6rem}
.st-tablewrap{width:fit-content;min-width:min(320px,100%);margin:.35rem 0 .6rem;max-width:100%;overflow:auto;border:1px solid var(--line);border-radius:8px}
.st-tablewrap table{border-collapse:collapse;font-size:12px;width:100%}
.st-tablewrap caption{caption-side:top;text-align:left;padding:.35rem .6rem;color:var(--text-dim);font-size:11px;
  border-bottom:1px solid var(--line);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:60ch}
.st-tablewrap th,.st-tablewrap td{padding:.3rem .7rem;text-align:left;border-bottom:1px solid var(--line);white-space:nowrap}
.st-tablewrap th{color:var(--text);background:var(--surface-hi);font-weight:600}
.st-tablewrap td{color:var(--text-soft)}
.st-tablewrap tr:last-child td{border-bottom:0}
.st-tablewrap .more td{color:var(--text-dim);font-style:italic}
.st-stdin{display:flex;align-items:flex-start;gap:.6rem;padding:.45rem .7rem;border-top:1px solid var(--line);flex:none;background:var(--bg)}
.st-stdin label{padding-top:.3rem;font:600 .62rem var(--f-body);letter-spacing:.12em;text-transform:uppercase;color:var(--text-dim)}
.st-stdin textarea{flex:1;min-height:28px;max-height:120px;resize:vertical;padding:.3rem .6rem;border-radius:6px;
  border:1px solid var(--line);background:var(--bg-elev);font:12.5px/1.5 var(--f-mono);color:var(--text)}
.st-stdin textarea:focus{border-color:var(--brand)}
.st-stdin textarea::placeholder{color:var(--text-dim)}

/* ---------- status bar ---------- */
.st-status{display:flex;align-items:center;height:var(--st-status);padding:0 .4rem;flex:none;
  background:var(--brand);color:#fff;font-size:11.5px;overflow:hidden}
.st-sitem{display:inline-flex;align-items:center;gap:.35rem;height:100%;padding:0 .55rem;white-space:nowrap;color:inherit}
button.st-sitem:hover{background:rgba(255,255,255,.14)}
.st-sitem svg{width:13px;height:13px}
#st-s-saved.unsaved::before{content:"";width:7px;height:7px;border-radius:50%;background:#fff;opacity:.9}
.st-sitem .spinner{width:11px;height:11px;border-color:rgba(255,255,255,.35);border-top-color:#fff}
.studio.is-running .st-status{background:linear-gradient(90deg,var(--brand),#5b8def)}

/* ---------- run + projects views ---------- */
.st-run-view h3,.st-projects h3{font:600 .66rem var(--f-body);letter-spacing:.12em;text-transform:uppercase;
  color:var(--text-dim);margin:1.1rem 0 .5rem}
.st-run-view h3:first-child,.st-projects h3:first-child{margin-top:.3rem}
.st-kv{display:grid;grid-template-columns:auto 1fr;gap:.35rem .8rem;font-size:12.5px}
.st-kv dt{color:var(--text-dim)}
.st-kv dd{color:var(--text);min-width:0;overflow:hidden;text-overflow:ellipsis}
.st-run-view .st-btn{width:100%;justify-content:center;margin-top:.9rem;height:34px}
.st-field{display:flex;flex-direction:column;gap:.3rem;margin-top:.8rem;font-size:12px;color:var(--text-dim)}
.st-field select{height:30px;padding:0 .5rem;border-radius:7px;border:1px solid var(--line);background:var(--bg-elev);color:var(--text);font-size:12.5px}
.st-note{margin-top:.9rem;padding:.6rem .7rem;border-radius:8px;border:1px solid var(--line);background:var(--surface);
  font-size:11.5px;line-height:1.55;color:var(--text-soft)}
.st-note.remote{border-color:rgba(251,191,36,.35);background:rgba(251,191,36,.07)}
.st-note.local{border-color:rgba(163,230,53,.3);background:rgba(163,230,53,.06)}
.st-runlist{display:grid;gap:.3rem;font-size:12px}
.st-runlist li{display:flex;justify-content:space-between;gap:.6rem;color:var(--text-soft)}
.st-runlist li span:last-child{color:var(--text-dim);text-align:right}

.st-plist{display:grid;gap:.3rem}
.st-pitem{display:flex;align-items:center;gap:.6rem;padding:.5rem .55rem;border-radius:8px;border:1px solid transparent;cursor:pointer}
.st-pitem:hover{background:var(--st-hover)}
.st-pitem.current{border-color:color-mix(in srgb, var(--brand) 50%, transparent);background:var(--st-sel)}
.st-pitem .st-ficon{min-width:26px;height:22px;border-radius:6px;background:var(--surface-hi);font-size:9.5px}
.st-pitem-txt{flex:1;min-width:0}
.st-pitem-name{display:block;color:var(--text);font-weight:550;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.st-pitem-meta{display:block;font-size:11px;color:var(--text-dim)}
.st-pitem .st-more{width:24px;height:24px;border-radius:5px;display:grid;place-items:center;color:var(--text-dim)}
.st-pitem .st-more:hover{background:var(--st-hover);color:var(--text)}
.st-tgrid{display:grid;grid-template-columns:1fr 1fr;gap:.4rem}
.st-tcard{display:flex;flex-direction:column;align-items:flex-start;gap:.3rem;padding:.6rem;border-radius:9px;text-align:left;
  border:1px solid var(--line);background:var(--surface);transition:border-color var(--d-fast),transform var(--d-fast)}
.st-tcard:hover{border-color:var(--brand);transform:translateY(-1px)}
.st-tcard .st-ficon{font-size:9.5px;min-width:24px;height:20px;border-radius:5px;background:var(--surface-hi)}
.st-tcard b{font-size:12.5px;font-weight:600}
.st-tcard small{font-size:10.5px;line-height:1.35;color:var(--text-dim)}

/* ---------- overlays ---------- */
.st-quick{position:absolute;inset:0;z-index:50;display:flex;justify-content:center;padding-top:56px;background:rgba(0,0,0,.18)}
.st-quick-box{width:min(560px,92%);align-self:flex-start;background:var(--bg-elev-2);border:1px solid var(--line-hi);
  border-radius:10px;box-shadow:var(--sh-lg);overflow:hidden}
.st-quick input{width:100%;height:38px;padding:0 .9rem;font-size:13px;border-bottom:1px solid var(--line);background:transparent;color:var(--text)}
.st-quick ul{max-height:320px;overflow-y:auto;padding:.3rem}
.st-quick li{display:flex;align-items:center;gap:.5rem;padding:.35rem .6rem;border-radius:6px;cursor:pointer;color:var(--text-soft);font-size:12.5px}
.st-quick li.on{background:var(--st-sel);color:var(--text)}
.st-quick li small{color:var(--text-dim);font-size:11px;margin-left:auto;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.st-quick mark{background:none;color:var(--brand-hi);font-weight:700}
.st-quick .none{color:var(--text-dim);cursor:default}

.st-menu{position:fixed;z-index:1000;min-width:180px;padding:.3rem;border-radius:9px;background:var(--bg-elev-2);
  border:1px solid var(--line-hi);box-shadow:var(--sh-lg);font-size:12.5px}
.st-menu button{display:flex;width:100%;align-items:center;justify-content:space-between;gap:1rem;padding:.38rem .7rem;
  border-radius:6px;color:var(--text-soft);text-align:left}
.st-menu button:hover,.st-menu button:focus-visible{background:var(--brand);color:#fff;outline:none}
.st-menu button.danger{color:var(--rose)}
.st-menu button.danger:hover{background:var(--rose);color:#fff}
.st-menu kbd{font-size:.62rem;opacity:.75}
.st-menu hr{border:0;height:1px;background:var(--line);margin:.25rem .3rem}

.st-dialog{position:absolute;inset:0;z-index:60;display:grid;place-items:center;padding:1rem;background:rgba(4,4,8,.5);
  backdrop-filter:blur(3px);-webkit-backdrop-filter:blur(3px)}
.st-dialog-box{width:min(400px,100%);padding:1.2rem;border-radius:14px;background:var(--bg-elev);border:1px solid var(--line-hi);
  box-shadow:var(--sh-lg)}
.st-dialog-box h2{font-size:1rem;letter-spacing:-.01em;margin-bottom:.4rem}
.st-dialog-box p{font-size:12.5px;margin-bottom:.8rem;word-break:break-word}
.st-dialog-box input{width:100%;height:34px;padding:0 .7rem;border-radius:8px;border:1px solid var(--line-hi);
  background:var(--bg);color:var(--text);font-size:13px;margin-bottom:.9rem}
.st-dialog-box input:focus{border-color:var(--brand)}
.st-dialog-actions{display:flex;justify-content:flex-end;gap:.5rem}

.st-dropzone{position:absolute;inset:0;z-index:40;display:grid;place-items:center;pointer-events:none;
  background:color-mix(in srgb, var(--brand) 14%, transparent);border:2px dashed var(--brand);border-radius:6px}
.st-dropzone div{padding:.7rem 1.1rem;border-radius:99px;background:var(--bg-elev);border:1px solid var(--line-hi);
  box-shadow:var(--sh-md);font-size:13px}
.st-scrim{display:none}

/* ---------- about strip under the IDE ---------- */
.st-about{padding-block:clamp(2.5rem,6vw,4.5rem)}
.st-about-grid{display:grid;grid-template-columns:1fr 1.4fr;gap:var(--sp-6);align-items:end}
.st-about-h{font-size:var(--t-2xl)}
.st-about p{font-size:var(--t-sm)}
.st-about a{color:var(--cyan);text-decoration:underline;text-underline-offset:2px}
.st-about code{font-family:var(--f-mono);font-size:.88em;color:var(--cyan)}

/* ---------- responsive ---------- */
@media (max-width:1100px){
  .st-btn-run kbd{display:none}
}
@media (max-width:760px){
  .studio{--st-act:42px;min-height:480px}
  .st-mobile-only{display:inline-grid}
  .st-brand-name,.st-hide-sm,.st-top [data-act="panelPos"],.st-panel-head [data-act="panelPos"]{display:none}
  .st-brand{padding-right:0}
  .st-project select{max-width:150px}
  .st-act{width:34px;height:34px}
  /* the side bar becomes a drawer over the editor */
  .st-side{position:absolute;z-index:30;top:0;bottom:0;left:var(--st-act);width:min(300px,80vw)!important;max-width:none;
    border-right:1px solid var(--line-hi);box-shadow:var(--sh-lg);
    transform:translateX(calc(-100% - var(--st-act) - 12px));visibility:hidden;
    transition:transform var(--d) var(--e-out),visibility 0s linear var(--d);display:flex!important}
  .studio[data-side="open"] .st-side{transform:none;visibility:visible;transition:transform var(--d) var(--e-out)}
  .st-activity{position:relative;z-index:31}
  .st-sash-side{display:none!important}
  .studio[data-side="open"] .st-scrim{display:block;position:absolute;inset:0;left:var(--st-act);z-index:25;background:rgba(0,0,0,.35)}
  /* panel always stacks under the editor */
  .st-work{flex-direction:column!important}
  .st-sash-panel{width:auto!important;height:1px!important;cursor:row-resize!important}
  .st-panel{width:auto!important;max-width:none!important;height:var(--panel-size)!important;min-height:120px;max-height:75%}
  .st-crumbs{display:none}
  .st-row{height:30px}
  .st-row .st-more{opacity:1}
  .st-about-grid{grid-template-columns:1fr}
}
@media (max-width:420px){
  .st-btn-run{padding:0 .65rem}
  #st-s-mode,#st-s-lang{display:none}
}

/* ---- accessibility pass ---- */
.st-ptabs{display:flex;align-items:center;gap:.15rem;height:100%}
.st-tab:focus-visible{outline:2px solid var(--brand-hi);outline-offset:-2px}
.st-tab-x{cursor:pointer}
/* the language colours are tuned for dark surfaces; on light ones, mix in black so the labels stay readable */
:root[data-theme="light"] .st-ficon:not(.folder){color:color-mix(in srgb,var(--c,#8b93a7) 55%,#000)}