/* Endoscope viewer: a dark bench instrument. The picture is the brightest thing on screen; the chrome stays quiet. */
:root{
  --bg:#1A1F26;--panel:#232A33;--raised:#2C3540;--well:#000;
  --ink:#E8ECF0;--mute:#8B97A5;--line:rgba(255,255,255,.08);--ring:rgba(255,255,255,.14);
  --teal:#35C2B5;--teal-ink:#07231F;--rec:#E5484D;--ok:#4CC38A;--warn:#F0A33A;
  --r:10px;--r-sm:7px;
}
*{box-sizing:border-box;margin:0}
html,body{height:100%;background:var(--bg);color:var(--ink);
  font:15px/1.45 -apple-system,"SF Pro Text",system-ui,sans-serif;-webkit-font-smoothing:antialiased}
button{font:inherit;color:inherit;cursor:pointer}
button:focus-visible,a:focus-visible,li:focus-visible{outline:2px solid var(--teal);outline-offset:2px}
.app{display:grid;grid-template-columns:1fr 336px;gap:20px;height:100vh;padding:20px 22px}
.view{display:grid;grid-template-rows:auto 1fr auto;gap:12px;min-width:0;min-height:0}

/* title row */
.title{display:flex;align-items:center;gap:12px;padding:0 2px}
.title .mark{width:28px;height:28px;border-radius:7px;flex:0 0 auto}
.title h1{font-size:20px;font-weight:600;letter-spacing:-.01em}
.st{font-weight:500;color:var(--mute);display:inline-flex;align-items:center;gap:8px}
.st::before{content:"";width:8px;height:8px;border-radius:50%;background:currentColor;box-shadow:0 0 0 3px color-mix(in srgb,currentColor 18%,transparent)}
.st.ok{color:var(--ok)}.st.wait{color:var(--mute)}.st.warn{color:var(--warn)}.st.err{color:var(--rec)}.st.frozen{color:var(--teal)}
.serial{color:var(--mute);font-size:14px;font-variant-numeric:tabular-nums}

/* the well */
.frame{background:var(--well);border-radius:var(--r);display:flex;align-items:center;justify-content:center;
  overflow:hidden;position:relative;min-height:0;box-shadow:inset 0 0 0 1px var(--ring)}
.frame img,.frame canvas{width:100%;height:100%;object-fit:contain;transform-origin:center center}
.frame img[hidden],.frame canvas[hidden]{display:none}
.empty{text-align:center;padding:36px 40px;max-width:520px;color:var(--ink)}
.frame .connect-art{width:200px;height:100px;object-fit:contain;display:block;margin:0 auto 18px;transform:none}
.frame .connect-art[hidden]{display:none}
.empty h3{font-size:21px;font-weight:600;margin-bottom:8px;letter-spacing:-.01em}
.empty p{color:var(--mute)}
.empty .detail{margin-top:12px;font-size:14px}
.empty code{background:var(--panel);padding:2px 6px;border-radius:4px;font-size:13px;color:var(--ink)}
.rec{position:absolute;left:14px;top:12px;background:rgba(0,0,0,.6);backdrop-filter:blur(6px);color:#fff;padding:6px 11px;
  border-radius:999px;font-weight:500;font-variant-numeric:tabular-nums}
.rec::before{content:"";display:inline-block;width:9px;height:9px;border-radius:50%;background:var(--rec);margin-right:8px;vertical-align:1px;animation:blink 1.6s steps(1) infinite}
@keyframes blink{50%{opacity:.25}}
@media (prefers-reduced-motion:reduce){.rec::before{animation:none}}
.toast{position:absolute;right:14px;top:12px;background:rgba(0,0,0,.65);backdrop-filter:blur(6px);color:#fff;padding:6px 12px;border-radius:999px;font-weight:500}

/* toolbar */
.bar{display:flex;gap:5px;align-items:center;flex-wrap:wrap}
.bar button{font-size:13.5px;font-weight:500;padding:8px 11px;border:0;background:var(--panel);border-radius:999px;color:var(--ink);white-space:nowrap}
.bar button:hover:not(:disabled){background:var(--raised)}
.bar button.on{background:color-mix(in srgb,var(--teal) 18%,var(--panel));color:var(--teal)}
.bar button:disabled{opacity:.4;cursor:default}
.bar #btn-release{margin-left:4px;color:var(--mute)}
.bar #btn-release.on{color:var(--warn);background:color-mix(in srgb,var(--warn) 16%,var(--panel))}
.bar .fps{margin-left:auto;color:var(--mute);font-size:13px;font-variant-numeric:tabular-nums;white-space:nowrap}

/* icons: CSS masks so the text labels (which the script rewrites) keep their icon */
#btn-photo{--icon:url('assets/photo.svg')}
#btn-record{--icon:url('assets/video.svg')}
#btn-record.stop{--icon:url('assets/stop.svg')}
#btn-freeze{--icon:url('assets/freeze.svg')}
#btn-freeze.on{--icon:url('assets/play.svg')}
#btn-rotate{--icon:url('assets/rotate.svg')}
#btn-mirror{--icon:url('assets/mirror.svg')}
#btn-zoom-in{--icon:url('assets/zoom-in.svg')}
#btn-zoom-out{--icon:url('assets/zoom-out.svg')}
#btn-reset{--icon:url('assets/reset.svg')}
#btn-release{--icon:url('assets/usb.svg')}
#open-folder{--icon:url('assets/folder.svg')}
#btn-photo::before,#btn-record::before,#btn-freeze::before,#btn-rotate::before,#btn-mirror::before,#btn-zoom-in::before,
#btn-zoom-out::before,#btn-reset::before,#btn-release::before,#open-folder::before{
  content:"";display:inline-block;width:17px;height:17px;margin-right:6px;vertical-align:-4px;background:currentColor;
  -webkit-mask:var(--icon) center/contain no-repeat;mask:var(--icon) center/contain no-repeat}
#open-folder::before{width:15px;height:15px;margin-right:5px;vertical-align:-2px}
.caps button::before{width:20px;height:20px;vertical-align:-5px;margin-right:9px}

/* right column */
aside{display:grid;grid-template-rows:auto auto auto 1fr;gap:14px;min-height:0}
.card{background:var(--panel);border-radius:var(--r);padding:14px 16px}
.card h2{font-size:13px;font-weight:500;color:var(--mute);margin-bottom:8px}
dl{display:grid;grid-template-columns:auto 1fr;gap:5px 16px;font-size:14px}
dt{color:var(--mute)}dd{font-weight:500;font-variant-numeric:tabular-nums}
.local-note{display:flex;align-items:center;gap:7px;color:var(--mute);font-size:12.5px;margin-top:10px}
.local-note img{width:16px;height:16px;opacity:.8;-webkit-mask:url('assets/local.svg') center/contain no-repeat;mask:url('assets/local.svg') center/contain no-repeat;background:var(--mute)}
.adv summary{font-size:13px;font-weight:500;color:var(--mute);cursor:pointer;list-style:none;display:flex;align-items:center;gap:8px}
.adv summary::before{content:"";width:0;height:0;border:5px solid transparent;border-left-color:var(--mute);margin-left:2px;transition:transform .15s}
.adv[open] summary::before{transform:rotate(90deg)}
.adv[open] summary{margin-bottom:10px}
.adv .row{display:grid;grid-template-columns:1fr auto;gap:10px;align-items:center;padding:7px 0;border-top:1px solid var(--line);font-size:14px}
.adv .row:first-of-type{border-top:0}
.adv .row span{display:block}
.adv .row small{display:block;color:var(--mute);font-size:12.5px;margin-top:1px}
.adv input[type=text],.adv select{font:inherit;color:var(--ink);background:var(--raised);border:0;border-radius:6px;padding:6px 8px;min-width:0}
.adv input[type=text]{grid-column:1 / -1;width:100%}
.adv .row:has(input[type=text]){grid-template-columns:1fr}
.adv input[type=checkbox]{appearance:none;width:36px;height:21px;border-radius:999px;background:var(--raised);position:relative;cursor:pointer;margin:0;transition:background .15s}
.adv input[type=checkbox]::after{content:"";position:absolute;top:3px;left:3px;width:15px;height:15px;border-radius:50%;background:var(--mute);transition:transform .15s,background .15s}
.adv input[type=checkbox]:checked{background:var(--teal)}
.adv input[type=checkbox]:checked::after{transform:translateX(15px);background:var(--teal-ink)}
.stamp{position:absolute;left:0;top:0;background:rgba(0,0,0,.55);color:#fff;padding:5px 10px;border-radius:4px;font-size:13px;line-height:1.3;font-variant-numeric:tabular-nums;pointer-events:none;white-space:pre-line;max-width:60%}
.grid-overlay{position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(to right,transparent calc(33.333% - .5px),rgba(255,255,255,.35) calc(33.333% - .5px),rgba(255,255,255,.35) calc(33.333% + .5px),transparent calc(33.333% + .5px),transparent calc(66.667% - .5px),rgba(255,255,255,.35) calc(66.667% - .5px),rgba(255,255,255,.35) calc(66.667% + .5px),transparent calc(66.667% + .5px)),
                   linear-gradient(to bottom,transparent calc(33.333% - .5px),rgba(255,255,255,.35) calc(33.333% - .5px),rgba(255,255,255,.35) calc(33.333% + .5px),transparent calc(33.333% + .5px),transparent calc(66.667% - .5px),rgba(255,255,255,.35) calc(66.667% - .5px),rgba(255,255,255,.35) calc(66.667% + .5px),transparent calc(66.667% + .5px))}
.grid-overlay::before,.grid-overlay::after{content:"";position:absolute;left:50%;top:50%;background:rgba(255,255,255,.6)}
.grid-overlay::before{width:24px;height:1px;transform:translate(-50%,-50%)}
.grid-overlay::after{width:1px;height:24px;transform:translate(-50%,-50%)}
.caps{display:grid;gap:8px}
.caps button{font-size:16px;font-weight:600;padding:13px 14px;border:0;border-radius:var(--r);color:#fff;text-align:center;transition:filter .15s}
.caps button:hover:not(:disabled){filter:brightness(1.08)}
.caps button:disabled{background:var(--panel);color:var(--mute);cursor:default}
.caps button:disabled small{color:var(--mute)}
.caps small{color:rgba(255,255,255,.8);font-weight:400;display:block;font-size:13px;margin-top:3px}
.caps .photo:not(:disabled){background:var(--teal);color:var(--teal-ink)}.photo small{color:rgba(7,35,31,.75)}
.video{background:var(--rec)}.video.stop{background:var(--raised);box-shadow:inset 0 0 0 1px var(--ring)}
.video.stop small{font-variant-numeric:tabular-nums}
.log{overflow:auto;min-height:0;padding-top:12px}
.log h2{display:flex;gap:10px;align-items:baseline;margin-bottom:6px}
.log h2 span{flex:1;min-width:0;overflow-wrap:anywhere}
.log h2 a{color:var(--teal);font-weight:500;text-decoration:none;white-space:nowrap}
.log ul{list-style:none}
.log li{display:grid;grid-template-columns:64px 1fr;gap:12px;align-items:center;padding:8px 6px;margin:0 -6px;border-radius:var(--r-sm);cursor:pointer}
.log li:hover{background:var(--raised)}
.log li > div{min-width:0}
.log img{width:64px;height:48px;object-fit:cover;border-radius:5px;background:var(--raised)}
.log .n{font-weight:500;font-size:13px;overflow-wrap:anywhere}
.log .m{color:var(--mute);font-size:13px;font-variant-numeric:tabular-nums}
.log .none{color:var(--mute);padding:8px 0;font-size:14px}

@media (max-width:1000px){
 .app{grid-template-columns:1fr;height:auto;min-height:100dvh;padding:14px 16px 24px;gap:14px}
 .view{grid-template-rows:auto auto auto;gap:10px}
 .frame{aspect-ratio:4/3;min-height:0}
 aside{grid-template-rows:auto auto auto auto;gap:12px}
 .caps{order:-1}   /* capture first on a phone, status below */
 /* toolbar scrolls sideways instead of wrapping into three rows */
 .bar{flex-wrap:nowrap;overflow-x:auto;padding-bottom:4px;-webkit-overflow-scrolling:touch;scrollbar-width:none}
 .bar::-webkit-scrollbar{display:none}
 .bar button{flex:0 0 auto;padding:9px 13px}
 .bar .fps{flex:0 0 auto;padding-left:6px}
 /* capture side by side, thumb-sized */
 .caps{grid-template-columns:1fr 1fr}
 .caps button{padding:14px 10px;font-size:15px;min-height:64px}
 .caps small{font-size:12px}
 .log{padding-top:12px;max-height:none}
}
@media (max-width:520px){
 .app{padding:10px 12px 20px}
 .title{flex-wrap:wrap;gap:6px 12px}
 .title h1{font-size:18px}
 .serial{display:none}
 .empty{padding:24px 18px}
 .empty h3{font-size:18px}
 .frame .connect-art{width:144px;height:72px;margin-bottom:12px}
 .caps small{display:none}
 .caps button{min-height:56px;padding:14px 8px}
 .log h2{flex-wrap:wrap}
 .log h2 span{flex-basis:100%}
 .log .n{font-size:12.5px}
}

/* hosted page only */
.empty .connect{margin-top:16px;font-size:15px;font-weight:600;padding:11px 20px;border:0;border-radius:999px;background:var(--teal);color:var(--teal-ink);cursor:pointer}
.empty .connect::before{content:"";display:inline-block;width:17px;height:17px;margin-right:7px;vertical-align:-4px;background:currentColor;-webkit-mask:url('assets/usb.svg') center/contain no-repeat;mask:url('assets/usb.svg') center/contain no-repeat}
.log .pick{color:var(--teal);font-weight:500;background:none;border:0;padding:0;font-size:inherit;cursor:pointer;white-space:nowrap}
.log .pick::before{content:"";display:inline-block;width:15px;height:15px;margin-right:5px;vertical-align:-2px;background:currentColor;-webkit-mask:url('assets/folder.svg') center/contain no-repeat;mask:url('assets/folder.svg') center/contain no-repeat}
.viewer{position:fixed;inset:0;background:rgba(0,0,0,.9);display:flex;align-items:center;justify-content:center;z-index:10;cursor:zoom-out}
.viewer img,.viewer video{max-width:94vw;max-height:94vh;border-radius:8px}
.viewer[hidden]{display:none}