/* Shared style for the interactives library. Tokens follow src/app/globals.css. */
:root{--page:#f4f3ff;--text:#374151;--bright:#111827;--muted:#6b7280;--border:#e5e7eb;--accent:#6366f1;--accent-dim:rgba(99,102,241,.08);--green:#059669;--rose:#e11d48;--amber:#d97706;--sim:#f8fafc;--font:Inter,-apple-system,BlinkMacSystemFont,sans-serif;--mono:'JetBrains Mono',ui-monospace,Menlo,monospace}
*{box-sizing:border-box}
html,body{margin:0;background:var(--page);color:var(--text);font-family:var(--font);font-size:16px;line-height:1.5}
body.embed{background:transparent}
.wrap{width:100%;max-width:760px;margin:0 auto;padding:40px 20px 80px}
body.embed .wrap{max-width:none;padding:0}
h1{font-size:22px;font-weight:600;color:var(--bright);letter-spacing:-.3px;margin:0 0 6px}
.sees{font-size:15px;color:var(--muted);margin:0 0 18px}
/* the card */
.sim{position:relative;border:1px solid var(--border);border-radius:12px;background:var(--sim);overflow:hidden;box-shadow:0 4px 24px -4px rgba(0,0,0,.08)}
.board{position:relative;width:100%}
.board canvas{display:block;width:100%;touch-action:none}
.board.grab canvas{cursor:grab}.board.grabbing canvas{cursor:grabbing}.board.point canvas{cursor:pointer}
.kx{position:absolute;pointer-events:none;white-space:nowrap;color:var(--bright);font-size:15px;line-height:1;transition:opacity .2s}
.kx .katex{font-size:1em}
/* statement line */
.stmt{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;padding:16px 18px 14px;background:#fff;border-top:1px solid var(--border);min-height:74px;text-align:center}
.stmt-main{font-size:24px;font-weight:600;color:var(--bright);line-height:1.25;transition:color .25s}
.stmt-main .katex{font-size:1em}
.stmt-main.pop{animation:stmtpop .38s cubic-bezier(.2,.9,.3,1.2)}
@keyframes stmtpop{0%{transform:scale(.9);opacity:.2}100%{transform:scale(1);opacity:1}}
.stmt-sub{font-size:15px;color:var(--muted);min-height:1.2em}
.stmt-sub .katex{font-size:1.05em}
.stmt:empty,.stmt-main:empty+.stmt-sub:empty{display:none}
@media (max-width:640px){.stmt-main{font-size:20px}}
/* control bar */
.ctl{display:flex;align-items:center;gap:10px;padding:10px 14px 12px;border-top:1px solid var(--border);background:#fff;font-size:14px;color:var(--muted);flex-wrap:wrap;min-height:54px}
.ctl:empty{display:none}
.ctl .grow{flex:1}
.tabs{display:inline-flex;gap:4px;padding:3px;border:1px solid var(--border);border-radius:999px;background:#fff}
.tab{border:0;border-radius:999px;padding:6px 13px;font:14px var(--font);color:var(--muted);background:transparent;cursor:pointer;transition:background .15s,color .15s}
.tab:hover{color:var(--bright)}
.tab.on{background:var(--accent);color:#fff}
.tab .katex{font-size:1.05em}
.btn{display:inline-flex;align-items:center;gap:8px;border:1px solid var(--border);border-radius:999px;padding:8px 16px;font:14px var(--font);color:var(--bright);background:#fff;cursor:pointer;transition:border-color .15s,background .15s,transform .15s}
.btn:hover{border-color:var(--accent)}
.btn:disabled{opacity:.5;cursor:default}
.btn.pulse{animation:pulse 1.1s ease-in-out infinite}
.btn.primary{background:var(--accent);border-color:var(--accent);color:#fff}
.btn .katex{font-size:1.05em}
@keyframes pulse{0%,100%{box-shadow:0 0 0 0 rgba(99,102,241,.45)}50%{box-shadow:0 0 0 8px rgba(99,102,241,0)}}
.stepper{display:inline-flex;align-items:center;gap:6px}
.stepper .dots{display:inline-flex;gap:6px;margin:0 6px}
.stepper .dots i{width:8px;height:8px;border-radius:50%;background:var(--border);transition:background .2s}
.stepper .dots i.on{background:var(--accent)}
.rng{display:inline-flex;align-items:center;gap:10px;flex:1;min-width:180px}
.rng input{flex:1;accent-color:var(--accent)}
.rng .val{font-family:var(--mono);font-size:13.5px;color:var(--bright);min-width:44px;text-align:right}
.read{font-family:var(--mono);font-size:13.5px;color:var(--bright);margin-left:auto;white-space:nowrap}
@media (prefers-reduced-motion:reduce){.btn.pulse{animation:none}}
/* gallery */
.gal{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:18px}
.gal a{display:block;text-decoration:none;color:inherit;border:1px solid var(--border);border-radius:12px;background:#fff;overflow:hidden;transition:border-color .15s}
.gal a:hover{border-color:var(--accent)}
.gal iframe{display:block;width:100%;height:230px;border:0;pointer-events:none;background:var(--sim)}
.gal .meta{padding:12px 14px 14px}
.gal .meta b{display:block;font-size:15px;font-weight:600;color:var(--bright)}
.gal .meta span{display:block;font-size:13.5px;color:var(--muted);margin-top:3px}
.gal .meta em{display:inline-block;font-style:normal;font-size:11px;letter-spacing:1.2px;text-transform:uppercase;color:var(--accent);margin-top:8px}
.tab.pulse{animation:pulse 1.1s ease-in-out infinite}