*,*::before,*::after{box-sizing:border-box}
html,body{height:100%;margin:0}
body{
  font-family:var(--font-body);background:var(--blue-950);color:var(--color-ink);
  overflow:hidden;-webkit-font-smoothing:antialiased;
  user-select:none;-webkit-user-select:none;
}
#app{display:flex;flex-direction:column;height:100vh;height:100dvh}

/* ---- top bar ---- */
#topbar{
  display:flex;align-items:center;gap:var(--sp-4);padding:var(--sp-2) var(--sp-4);
  background:var(--blue-900);color:var(--paper);border-bottom:1px solid var(--blue-800);
  flex:0 0 auto;z-index:30;
}
#topbar .brand{display:flex;flex-direction:column;line-height:1.1;min-width:0}
#topbar .eyebrow{font-family:var(--font-grotesk);text-transform:uppercase;letter-spacing:.16em;font-size:10px;font-weight:600;color:var(--gold-300)}
#topbar .brand strong{font-family:var(--font-display);font-weight:500;font-size:18px;color:var(--paper);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
#thumbs{display:flex;gap:6px;overflow-x:auto;flex:1 1 auto;padding:2px 0;scrollbar-width:thin}
#thumbs button{flex:0 0 auto;width:54px;height:34px;border-radius:3px;border:1.5px solid transparent;background:var(--blue-800);overflow:hidden;cursor:pointer;padding:0;opacity:.7;transition:opacity .15s,border-color .15s}
#thumbs button img{width:100%;height:100%;object-fit:cover;display:block}
#thumbs button.active{opacity:1;border-color:var(--gold-500)}
#thumbs button:hover{opacity:1}
.top-actions{display:flex;align-items:center;gap:6px;flex:0 0 auto}
#counter{color:var(--paper);opacity:.7;font-size:12px;min-width:48px;text-align:center}

/* ---- stage / zoom surface ---- */
#stage{position:relative;flex:1 1 auto;overflow:hidden;background:
  radial-gradient(circle at 50% 30%, var(--blue-900), var(--blue-950));}
#scene{position:absolute;top:0;left:0;transform-origin:0 0;will-change:transform}
.page{position:relative;background:var(--paper);box-shadow:0 0 0 1px var(--blue-700)}
.page img{display:block;width:auto;height:auto;pointer-events:none;-webkit-user-drag:none}
.page canvas.ink{position:absolute;top:0;left:0;width:100%;height:100%;touch-action:none}
.page .comments{position:absolute;inset:0;pointer-events:none}
#hint{position:absolute;left:50%;bottom:12px;transform:translateX(-50%);z-index:5;
  font-family:var(--font-mono);font-size:11px;color:var(--paper);opacity:.55;background:rgba(7,19,31,.6);
  padding:4px 10px;border-radius:20px;pointer-events:none;transition:opacity .4s}
#hint.gone{opacity:0}

/* mode cursors */
#stage[data-tool="move"] #scene{cursor:grab}
#stage[data-tool="move"] #scene:active{cursor:grabbing}
#stage[data-tool="pen"] .ink{cursor:crosshair}
#stage[data-tool="comment"] .ink{cursor:copy}

/* ---- comment pins ---- */
.pin{position:absolute;transform:translate(-50%,-100%);pointer-events:auto;z-index:6;display:flex;flex-direction:column;align-items:center}
.pin .dot{width:22px;height:22px;border-radius:50% 50% 50% 2px;rotate:45deg;background:var(--gold-500);
  border:2px solid var(--paper);box-shadow:0 1px 4px rgba(0,0,0,.4);cursor:grab}
.pin .box{margin-top:6px;width:200px;background:var(--paper-bright);border:1px solid var(--gold-500);border-radius:6px;
  padding:6px;box-shadow:0 4px 14px rgba(7,19,31,.35)}
.pin .box textarea{width:100%;border:0;background:transparent;resize:vertical;min-height:46px;font-family:var(--font-body);font-size:13px;color:var(--color-ink);outline:none;user-select:text}
.pin .box .del{float:right;border:0;background:transparent;color:var(--davitt-maroon);cursor:pointer;font-size:12px}
.pin.collapsed .box{display:none}

/* ---- bottom toolbar (ALWAYS VISIBLE) ---- */
#toolbar{
  flex:0 0 auto;display:flex;align-items:center;gap:var(--sp-3);flex-wrap:wrap;
  padding:var(--sp-2) var(--sp-4);background:var(--blue-900);border-top:1px solid var(--blue-800);z-index:30;
}
#toolbar .tools{display:flex;gap:4px}
.tool,.ghost,.cta{font-family:var(--font-grotesk);font-weight:600;border-radius:6px;cursor:pointer;border:1px solid transparent;
  padding:8px 12px;font-size:13px;line-height:1;transition:background .15s,border-color .15s,color .15s}
.tool{background:var(--blue-800);color:var(--paper)}
.tool.active{background:var(--gold-500);color:var(--blue-950)}
.ghost{background:transparent;color:var(--paper);border-color:var(--blue-700)}
.ghost:hover{background:var(--blue-800)}
.palette{display:flex;gap:5px;align-items:center}
.palette .swatch{width:22px;height:22px;border-radius:50%;border:2px solid var(--blue-700);cursor:pointer}
.palette .swatch.active{border-color:var(--paper);transform:scale(1.12)}
.edits{display:flex;align-items:center;gap:6px;margin-left:auto}
.zoomers{display:inline-flex;gap:2px;margin-left:6px}
.cta{background:var(--gold-500);color:var(--blue-950);font-size:14px;padding:10px 18px;border:0;letter-spacing:.02em}
.cta:hover{background:var(--gold-300)}
.cta:disabled{opacity:.6;cursor:wait}

/* ---- modal ---- */
.modal{position:fixed;inset:0;background:rgba(7,19,31,.7);display:flex;align-items:center;justify-content:center;z-index:50;padding:20px}
.modal[hidden]{display:none}
.modal-card{background:var(--paper);border-radius:10px;max-width:540px;width:100%;padding:var(--sp-6);box-shadow:0 20px 60px rgba(0,0,0,.5)}
.modal-card h3{font-family:var(--font-display);margin:0 0 var(--sp-3);color:var(--blue-900)}
.modal-card p{font-size:14px;line-height:1.5;margin:0 0 var(--sp-3)}
.modal-card a{color:var(--blue-600);font-family:var(--font-mono);font-size:13px;word-break:break-all}
.modal-card .ok{color:var(--parnell-green);font-weight:600}
.modal-card .err{color:var(--davitt-maroon)}

@media (max-width:640px){
  #thumbs{display:none}
  #topbar .brand strong{font-size:15px}
  .edits{margin-left:0}
  .cta{flex:1 1 100%;order:9}
}