:root{
  --bg:#101113;
  --glass:rgba(20,24,30,.30);
  --glass-strong:rgba(20,26,34,.82);
  --line:rgba(255,255,255,.22);
  --text:#fff;
  --muted:#aab7c6;
  --accent:#9dcaff;
  --top:max(12px,env(safe-area-inset-top));
  --right:max(12px,env(safe-area-inset-right));
  --bottom:max(12px,env(safe-area-inset-bottom));
  --left:max(12px,env(safe-area-inset-left));
}
*{box-sizing:border-box}
html,body{margin:0;width:100%;height:100%;overflow:hidden;background:var(--bg);color:var(--text);font:14px/1.35 system-ui,-apple-system,"Segoe UI",sans-serif;-webkit-text-size-adjust:100%}
#stage{position:fixed;inset:0;--split:10%;background:var(--bg)}
#viewer{position:absolute;inset:0;touch-action:none;cursor:grab}
#viewer:active{cursor:grabbing}
#before{position:absolute;inset:0;width:100%;height:100%;pointer-events:none;clip-path:inset(0 calc(100% - var(--split)) 0 0)}

.glass{background:var(--glass);border:1px solid var(--line);-webkit-backdrop-filter:blur(20px) saturate(1.2);backdrop-filter:blur(20px) saturate(1.2);border-radius:12px;color:var(--text);text-shadow:0 1px 3px rgba(0,0,0,.55)}
button,a,label{-webkit-tap-highlight-color:transparent;touch-action:manipulation}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px}

/* Options panel: two checkboxes, and the actions "Get yours" reveals. */
#panel{position:absolute;top:var(--top);right:var(--right);z-index:6;padding:4px;width:max-content;max-width:calc(100vw - var(--left) - var(--right));max-height:calc(100dvh - var(--top) - var(--bottom));overflow:auto}
.check{display:flex;flex-direction:row-reverse;align-items:center;justify-content:space-between;gap:10px;min-height:44px;padding:0 10px 0 12px;border-radius:8px;cursor:pointer;user-select:none;-webkit-user-select:none}
.check input{width:20px;height:20px;margin:0;accent-color:var(--accent);cursor:pointer;flex:none}
#actions{display:grid;gap:4px;margin:2px 0 4px;width:228px;max-width:calc(100vw - var(--left) - var(--right) - 8px)}
#actions[hidden]{display:none}
.action{display:flex;align-items:center;justify-content:space-between;gap:8px;min-height:44px;padding:0 12px;border-radius:8px;background:rgba(255,255,255,.07);color:var(--text);text-decoration:none}
.action.download{display:block;padding:8px 6px 6px}
.action.download .action-label{display:block;padding:0 6px 6px}
.chips{display:grid;grid-template-columns:1fr 1fr;gap:4px}
.chip{display:block;line-height:44px;padding:0 8px;border-radius:7px;background:rgba(255,255,255,.12);color:var(--text);text-decoration:none;font-size:13px;white-space:nowrap;text-align:center}
@media (hover:hover){.check:hover{background:rgba(255,255,255,.08)}a.action:hover{background:rgba(255,255,255,.14)}.chip:hover{background:rgba(255,255,255,.22)}}
/* Tips. Lorin's Buy Me a Coffee button, his rocket and cup, but wearing the
   site's own glass rather than the service's blue — his call, 2026-09-21:
   "make it fit the aesthetic of the website so far, don't make it stand out
   with the blue". Deliberately a plain link, not their embed script, so the
   page still loads nothing from anyone else. Source of truth for the wording
   and emoji: SITE_SPEC.md. */
#coffee{justify-content:center;gap:9px}
#print[aria-disabled="true"]{opacity:.55;cursor:default}
#print small{color:var(--muted);font-size:12px}
.note{margin:4px 4px 2px;color:var(--muted);font-size:11px;line-height:1.4}

#fullscreen{position:absolute;top:var(--top);left:var(--left);z-index:6;width:44px;height:44px;font-size:20px;line-height:1;cursor:pointer;padding:0}
#fullscreen[hidden]{display:none}

/* Divider. */
#divider{position:absolute;left:var(--split);top:0;bottom:0;width:44px;transform:translateX(-50%);cursor:ew-resize;touch-action:none;z-index:3;outline-offset:-5px}
#divider::before{content:'';position:absolute;left:50%;top:0;bottom:0;width:2px;margin-left:-1px;background:#fffe;box-shadow:0 0 4px #0009}
#handle{position:absolute;left:2px;top:50%;transform:translateY(-50%);width:40px;height:52px;border-radius:26px;display:grid;place-items:center;background:#192029aa;border:1px solid #ffffffb0;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);font-size:20px;user-select:none;-webkit-user-select:none}
@media (pointer:coarse){#divider{width:52px}#handle{left:4px;width:44px;height:56px}}
#divider.attention #handle{animation:compare-nudge .45s ease-in-out 2;background:#e6f5ff;color:#092b48;border:2px solid #fff;box-shadow:0 0 25px 10px #61baffbb}
#divider.attention::before{background:#a9ddff;width:4px;margin-left:-2px;box-shadow:0 0 18px 5px #62baffbb}
#divider.attention::after{content:'↔ Drag to compare';position:absolute;top:calc(50% + 48px);left:34px;white-space:nowrap;padding:12px 16px;border-radius:12px;background:#e6f5fff2;color:#092b48;font-size:15px;font-weight:700;box-shadow:0 4px 24px #0007;pointer-events:none}
@keyframes compare-nudge{0%,100%{transform:translateY(-50%) scale(1.25)}25%{transform:translate(-14px,-50%) scale(1.4)}75%{transform:translate(14px,-50%) scale(1.4)}}

/* One-time cues: rotate (upright phones only), then zoom. They never block touch. */
.cue{position:absolute;left:50%;top:44%;transform:translate(-50%,-50%);z-index:7;pointer-events:none;opacity:0;display:flex;flex-direction:column;align-items:center;gap:14px;color:#fff;font-family:"Helvetica Neue",Helvetica,Arial,sans-serif;font-weight:200;letter-spacing:.24em;text-align:center;padding:22px 28px 22px 34px;background:rgba(12,18,25,.34);border-radius:16px;-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px);text-shadow:0 2px 16px #0008;max-width:calc(100vw - 32px)}
#zoom-cue{font-size:clamp(24px,5vw,56px);white-space:nowrap}
#rotate-cue{font-size:clamp(18px,5.4vw,32px)}
.cue.visible{animation:cue-fade var(--cue-ms,2000ms) ease-in-out both}
@keyframes cue-fade{0%,100%{opacity:0}15%,70%{opacity:.9}}
#rotate-cue .phone{transform-origin:32px 32px}
#rotate-cue.visible .phone{animation:phone-turn 1.2s ease-in-out .3s 2 both}
@keyframes phone-turn{0%,15%{transform:rotate(0)}55%,100%{transform:rotate(-90deg)}}

#error{position:absolute;left:var(--left);top:var(--top);max-width:65%;background:#301b1be6;padding:12px;border-radius:8px;display:none;z-index:8}

@media (prefers-reduced-motion:reduce){
  #divider.attention #handle,#rotate-cue.visible .phone{animation:none}
  .cue.visible{animation:none;opacity:.9}
}
#human-check{display:flex;justify-content:center;padding:4px 0}
#human-check[hidden]{display:none}