/* Annotate — privacy-first document annotation. Apache-2.0 */
:root{
  --bg:#f4f5f7; --panel:#ffffff; --ink:#1f2430; --muted:#626a78;
  --line:#e3e6eb; --line-strong:#cdd2da;
  --accent:#2f6fed; --accent-ink:#fff;
  --danger:#c92a2a;
  --shadow:0 1px 2px rgba(16,24,40,.06),0 4px 14px rgba(16,24,40,.08);
  --radius:10px; --radius-sm:7px;
  --rail:74px; --topbar-h:52px;
  --hl1:#ffe14d; --hl2:#9be870; --hl3:#ff9ad1; --hl4:#74d0ff; --hl5:#ffb35c; --hl6:#c79bff;
}
*{box-sizing:border-box}
[hidden]{display:none !important}
html,body{height:100%}
body{
  margin:0;font:14px/1.45 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  color:var(--ink);background:var(--bg);overflow:hidden;
  -webkit-font-smoothing:antialiased;
}
button{font:inherit;color:inherit;cursor:pointer;touch-action:manipulation}
button:focus-visible,input:focus-visible,select:focus-visible,[contenteditable="true"]:focus-visible{
  outline:3px solid var(--accent);outline-offset:2px;
}
.lbl-short{display:none}
kbd{background:#f0f1f4;border:1px solid var(--line-strong);border-bottom-width:2px;border-radius:5px;padding:1px 6px;font:12px/1 ui-monospace,monospace}
code{background:#eef0f3;border-radius:4px;padding:1px 5px;font:12px/1 ui-monospace,monospace}

/* ---------- top bar ---------- */
#topbar{
  height:var(--topbar-h);display:flex;align-items:center;gap:14px;
  padding:0 14px;background:var(--panel);border-bottom:1px solid var(--line);
  position:relative;z-index:30;
}
.brand{display:flex;align-items:center;gap:8px;font-weight:700;letter-spacing:.2px;color:var(--ink)}
.brand svg{color:var(--accent)}
.topbar-group{display:flex;align-items:center;gap:6px}
.topbar-group.right{margin-left:auto}
.page-nav{display:flex;align-items:center;gap:3px;color:var(--muted);font-variant-numeric:tabular-nums;white-space:nowrap}
.page-nav .tbtn.icon{min-width:30px;padding:5px 8px}
#page-label{min-width:44px;text-align:center;font-size:12px}
.tbtn{
  background:var(--panel);border:1px solid var(--line-strong);border-radius:var(--radius-sm);
  padding:7px 12px;font-weight:550;color:var(--ink);transition:background .12s,border-color .12s,transform .05s;
  white-space:nowrap;
}
.tbtn:hover{background:#f7f8fa;border-color:var(--line-strong)}
.tbtn:active{transform:translateY(1px)}
.tbtn.primary{background:var(--accent);border-color:var(--accent);color:var(--accent-ink)}
.tbtn.primary:hover{background:#255fd6}
.tbtn.danger{background:#fff;border-color:#f0b4b4;color:var(--danger)}
.tbtn.danger:hover{background:#fdeaea}
.tbtn.icon{padding:7px 10px;min-width:36px;display:inline-flex;align-items:center;justify-content:center;font-size:16px}
.tbtn.small{padding:5px 10px;font-size:13px}
.tbtn.big{padding:11px 18px;font-size:15px}
.tbtn[disabled]{opacity:.4;cursor:default}
.zoom-label{min-width:48px;text-align:center;color:var(--muted);font-variant-numeric:tabular-nums;cursor:pointer;user-select:none;background:transparent;border:0;border-radius:4px;padding:4px}
.autosave-status{font-size:11px;color:var(--muted);white-space:nowrap;max-width:180px;overflow:hidden;text-overflow:ellipsis}
.autosave-status.saving,.autosave-status.pending{color:#596273}
.autosave-status.saved{color:#18794e}
.autosave-status.failed{color:var(--danger);font-weight:600}
.mobile-actions-panel{position:fixed;top:calc(var(--topbar-h) + 6px);right:8px;z-index:45;width:min(420px,calc(100vw - 16px));max-height:calc(100dvh - var(--topbar-h) - 14px);overflow:auto;padding:10px;display:flex;align-items:center;justify-content:flex-end;flex-wrap:wrap;gap:7px;background:var(--panel);border:1px solid var(--line-strong);border-radius:12px;box-shadow:0 10px 32px rgba(16,24,40,.2)}
.mobile-actions-panel .autosave-status{flex-basis:100%;max-width:none;text-align:right}
#btn-save.has-changes::after{content:"";display:inline-block;width:6px;height:6px;margin-left:6px;border-radius:50%;background:currentColor;vertical-align:middle}

/* ---------- workspace ---------- */
#workspace{display:flex;height:calc(100% - var(--topbar-h));}
#toolrail{
  width:var(--rail);flex:0 0 var(--rail);background:var(--panel);border-right:1px solid var(--line);
  display:flex;flex-direction:column;gap:2px;padding:8px 6px;overflow-y:auto;z-index:20;
}
.tool{
  background:transparent;border:1px solid transparent;border-radius:var(--radius-sm);
  display:flex;flex-direction:column;align-items:center;gap:3px;padding:8px 2px 6px;color:var(--ink);
  transition:background .12s,color .12s;
}
.tool svg{width:22px;height:22px}
.tool span{font-size:10.5px;color:var(--muted);font-weight:550}
.tool:hover{background:#f3f5f8}
.tool[aria-pressed="true"]{background:#e9f0ff;border-color:#cfe0ff;color:var(--accent)}
.tool[aria-pressed="true"] span{color:var(--accent)}

/* ---------- viewport ---------- */
#viewport{flex:1;overflow:auto;position:relative;padding:28px 28px 120px;}
#annotation-sidebar,#page-sidebar{width:290px;flex:0 0 290px;background:var(--panel);border-left:1px solid var(--line);padding:14px;overflow:auto;z-index:22}
.sidebar-head{display:flex;align-items:center;justify-content:space-between;gap:10px}
.sidebar-head h2{font-size:16px;margin:0}
#annotation-summary{margin:5px 0 12px;font-size:12px}
.annotation-list{display:flex;flex-direction:column;gap:6px}
.annotation-item{display:flex;flex-direction:column;gap:2px;width:100%;padding:9px 10px;text-align:left;background:#fff;border:1px solid var(--line);border-radius:8px}
.annotation-item:hover{background:#f7f8fa;border-color:var(--line-strong)}
.annotation-item.active{background:#e9f0ff;border-color:#a9c5ff}
.annotation-item-title{font-size:12px;font-weight:650;color:var(--ink)}
.annotation-item-preview{font-size:12px;color:var(--muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.page-list{display:flex;flex-direction:column;gap:10px}
.page-thumb-row{display:flex;align-items:center;gap:7px}
.page-thumb-main{min-width:0;flex:1;display:flex;align-items:center;gap:9px;padding:7px;background:#f7f8fa;border:1px solid var(--line);border-radius:8px;text-align:left}
.page-thumb-main:hover{border-color:#a9c5ff;background:#f1f5ff}
.page-thumb-main img{width:54px;height:68px;object-fit:contain;background:#fff;border:1px solid var(--line);box-shadow:0 1px 3px rgba(0,0,0,.08)}
.page-html-preview{width:54px;height:68px;overflow:hidden;padding:5px;background:#fff;border:1px solid var(--line);font-size:6px;line-height:1.3;color:var(--muted)}
.page-thumb-number{font-size:12px;font-weight:650}
.page-thumb-actions{display:flex;flex-direction:column;gap:2px}
.page-mini{width:25px;height:22px;padding:0;border:1px solid var(--line);border-radius:5px;background:#fff;color:var(--muted)}
.page-mini:hover:not(:disabled){border-color:var(--accent);color:var(--accent)}
.page-mini:disabled{opacity:.35;cursor:default}
#pages{display:flex;flex-direction:column;align-items:center;gap:24px}
.page-slot{position:relative;box-shadow:var(--shadow);background:#fff;border-radius:2px}
.page{position:absolute;top:0;left:0;transform-origin:top left;background:#fff}
.page .bg{position:absolute;inset:0;width:100%;height:100%;pointer-events:none;user-select:none;display:block}
.page img.bg{object-fit:contain}
.pdf-text-layer{position:absolute;inset:0;overflow:hidden;pointer-events:none;user-select:text;z-index:1}
.pdf-text-layer span{position:absolute;display:block;color:transparent;white-space:pre;line-height:1;transform-origin:0 0;pointer-events:auto;cursor:text;overflow:visible}
.pdf-text-layer span::selection{background:rgba(47,111,237,.3);color:transparent}
.page .bg-html{position:absolute;inset:0;overflow:hidden;background:#fff;pointer-events:none}
.page svg.vector{position:absolute;inset:0;width:100%;height:100%;pointer-events:none;overflow:visible}
.page .html-layer{position:absolute;inset:0;pointer-events:none}
.page .comment-anchor-layer{position:absolute;inset:0;pointer-events:none;z-index:3}
.page .comment-rail{position:absolute;left:calc(100% + 18px);top:0;width:224px;height:100%;pointer-events:none;z-index:7}
.page.comments-overflow .comment-rail{overflow-y:auto;pointer-events:auto}
.comment-appendix{display:none}
body.mode-select .page .html-layer{pointer-events:none}
body.mode-select .page .ann{pointer-events:auto}
.page .ui-layer{position:absolute;inset:0;pointer-events:none;overflow:visible}

/* cursors per tool */
body.mode-draw #viewport,body[data-tool="pen"] #viewport,body[data-tool="highlight"] #viewport{cursor:crosshair}
body[data-tool="rect"] #viewport,body[data-tool="ellipse"] #viewport,body[data-tool="arrow"] #viewport,body[data-tool="line"] #viewport{cursor:crosshair}
body[data-tool="text"] #viewport,body[data-tool="note"] #viewport,body[data-tool="comment"] #viewport{cursor:copy}

/* ---------- annotations: html elements ---------- */
.ann{position:absolute;}
.ann.selected{outline:2px solid var(--accent);outline-offset:1px}
.ann:focus-visible{outline:3px solid var(--accent);outline-offset:3px}
.ann-comment:focus-visible{outline:3px solid var(--accent);outline-offset:3px}
.ann .handle{position:absolute;width:11px;height:11px;background:#fff;border:2px solid var(--accent);border-radius:3px;pointer-events:auto;display:none;z-index:5}
.ann.selected .handle{display:block}
.ann .handle.br{right:-6px;bottom:-6px;cursor:nwse-resize}
.ann .handle.e1,.ann .handle.e2{border-radius:50%}

.ann-text{min-width:40px;min-height:24px;padding:3px 5px;outline:none;white-space:pre-wrap;word-break:break-word;cursor:text;background:transparent;line-height:1.3}
body.mode-select .ann-text{cursor:move}
.ann-text[contenteditable="true"]{cursor:text;background:rgba(255,255,255,.6);box-shadow:0 0 0 1px var(--line-strong)}

.ann-note{padding:10px 11px;background:var(--hl1);box-shadow:0 4px 12px rgba(16,24,40,.18);border-radius:3px 3px 3px 12px;overflow:hidden;cursor:move}
.ann-note .note-body{outline:none;white-space:pre-wrap;word-break:break-word;min-height:40px;cursor:text;font-size:14px;line-height:1.35}
.ann-note::before{content:"";position:absolute;top:0;right:0;border-width:0 16px 16px 0;border-style:solid;border-color:rgba(0,0,0,.08) transparent;}

.comment-anchor{position:absolute;transform:translate(-50%,-50%);width:24px;height:24px;padding:0;border:2px solid #fff;border-radius:50%;box-shadow:0 1px 4px rgba(0,0,0,.35);color:#fff;font-size:12px;font-weight:750;line-height:20px;pointer-events:auto;cursor:pointer}
.comment-anchor:focus-visible{outline:3px solid var(--accent);outline-offset:3px}
.ann-comment{left:0;width:202px;min-height:62px;background:#fff;border:1px solid var(--line-strong);border-left:4px solid var(--accent);border-radius:6px;box-shadow:var(--shadow);padding:9px;pointer-events:auto}
.ann-comment .cbody{outline:none;white-space:pre-wrap;word-break:break-word;min-height:34px;font-size:13px;cursor:text}
.ann-comment .cbody:empty::before{content:"Add comment…";color:var(--muted)}
.ann-comment .cmeta{display:flex;align-items:center;gap:6px;font-size:11px;color:var(--muted);margin-bottom:5px}
.comment-number{display:inline-grid;place-items:center;width:19px;height:19px;border-radius:50%;color:#fff;font-weight:750}

/* ---------- property bar ---------- */
#propbar{
  position:absolute;left:50%;transform:translateX(-50%);bottom:18px;z-index:25;
  display:flex;align-items:center;gap:4px;background:var(--panel);
  border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow);
  padding:7px 10px;max-width:calc(100vw - 40px);flex-wrap:wrap;justify-content:center;
}
.prop-group{display:flex;align-items:center;gap:7px;padding:0 8px;border-right:1px solid var(--line)}
.prop-group:last-child{border-right:none}
.prop-group[hidden]{display:none}
.prop-label{font-size:11px;text-transform:uppercase;letter-spacing:.5px;color:var(--muted);font-weight:600}
.swatches{display:flex;gap:5px}
.swatch{width:22px;height:22px;border-radius:50%;border:2px solid #fff;box-shadow:0 0 0 1px var(--line-strong);cursor:pointer;padding:0}
.swatch.active{box-shadow:0 0 0 2px var(--accent);transform:scale(1.08)}
.custom-color{position:relative;width:24px;height:24px;display:inline-block;cursor:pointer}
.custom-color input[type=color]{position:absolute;inset:0;opacity:0;width:100%;height:100%;cursor:pointer}
.custom-color:focus-within .cc-chip{outline:3px solid var(--accent);outline-offset:3px}
.cc-chip{position:absolute;inset:0;border-radius:50%;border:2px solid #fff;box-shadow:0 0 0 1px var(--line-strong);background:
  conic-gradient(from 0deg,#f00,#ff0,#0f0,#0ff,#00f,#f0f,#f00)}
input[type=range]{accent-color:var(--accent);width:110px}
.num{min-width:22px;text-align:center;color:var(--muted);font-variant-numeric:tabular-nums}
select{border:1px solid var(--line-strong);border-radius:6px;padding:4px 6px;background:#fff}
.mini{border:1px solid var(--line-strong);border-radius:6px;width:28px;height:28px;background:#fff}
.mini.active{background:#e9f0ff;border-color:#cfe0ff;color:var(--accent)}

/* ---------- welcome ---------- */
.welcome{position:absolute;inset:0;display:flex;align-items:safe center;justify-content:center;padding:24px;overflow:auto}
.welcome-card{background:var(--panel);border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow);padding:34px 38px;max-width:560px;text-align:center}
.welcome-card h1{margin:0 0 6px;font-size:30px;letter-spacing:-.5px}
.lede{font-size:16px;color:var(--ink);margin:0 0 20px}
.welcome-actions{display:flex;gap:10px;justify-content:center;margin-bottom:14px;flex-wrap:wrap}
.muted{color:var(--muted)}
.welcome-tips{text-align:left;margin:18px auto 0;max-width:430px;color:var(--muted);font-size:13.5px;line-height:1.7}

/* ---------- dialogs / banners / toast ---------- */
dialog{border:none;border-radius:16px;box-shadow:0 10px 40px rgba(16,24,40,.25);padding:24px 26px;max-width:460px;max-height:calc(100dvh - 24px);overflow:auto;width:90vw;color:var(--ink)}
dialog::backdrop{background:rgba(16,24,40,.4)}
dialog h2{margin:0 0 4px}
dialog h3{margin:18px 0 6px;font-size:14px;text-transform:uppercase;letter-spacing:.5px;color:var(--muted)}
.kbd-list{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:7px;font-size:13.5px}
dialog form{margin-top:18px;text-align:right}
.dialog-head{display:flex;align-items:flex-start;justify-content:space-between;gap:18px}
.dialog-head p{margin:2px 0 0}
#projects-dialog{width:min(680px,calc(100vw - 28px));max-width:680px}
.save-local-form{display:flex;flex-direction:column;gap:5px;margin:18px 0 8px;text-align:left}
.save-local-form>div{display:flex;gap:8px}
.save-local-form input{min-width:0;flex:1;border:1px solid var(--line-strong);border-radius:7px;padding:8px 10px;font:inherit}
#storage-summary{margin:8px 0 12px;font-size:12px}
.local-project-list{display:flex;flex-direction:column;gap:7px;max-height:45vh;overflow:auto}
.local-project-row{display:flex;align-items:center;justify-content:space-between;gap:12px;border:1px solid var(--line);border-radius:9px;padding:10px}
.local-project-info{display:flex;flex-direction:column;min-width:0}
.local-project-info strong{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.local-project-info span{font-size:12px;color:var(--muted)}
.local-project-actions{display:flex;gap:6px;flex:0 0 auto}
.empty-local{text-align:center;padding:20px 8px}
.banner{position:absolute;top:64px;left:50%;transform:translateX(-50%);z-index:40;background:var(--ink);color:#fff;border-radius:12px;box-shadow:var(--shadow);padding:10px 14px;display:flex;align-items:center;gap:10px;font-size:13.5px}
.banner .tbtn{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.25);color:#fff}
.banner .tbtn.primary{background:var(--accent);border-color:var(--accent)}
.toast{position:absolute;bottom:80px;left:50%;transform:translateX(-50%) translateY(10px);z-index:50;background:var(--ink);color:#fff;padding:9px 16px;border-radius:10px;font-size:13.5px;opacity:0;transition:opacity .2s,transform .2s;pointer-events:none;box-shadow:var(--shadow)}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}
.drop-overlay{position:fixed;inset:0;z-index:60;background:rgba(47,111,237,.12);border:3px dashed var(--accent);display:flex;align-items:center;justify-content:center}
.drop-overlay div{background:var(--accent);color:#fff;padding:14px 26px;border-radius:12px;font-size:18px;font-weight:600}

/* loading */
.page-loading{display:flex;align-items:center;justify-content:center;gap:10px;color:var(--muted);font-size:14px;height:200px}
.spinner{width:34px;height:34px;border:3px solid var(--line);border-top-color:var(--accent);border-radius:50%;animation:spin .8s linear infinite;margin-right:10px}
@keyframes spin{to{transform:rotate(360deg)}}

/* ============================================================
   Touch & mobile — auto-applied via body.is-touch + width
   ============================================================ */

/* On touch devices we drive scroll/zoom ourselves (see gestures.js),
   so disable the browser's native panning/zoom on the canvas. */
body.is-touch #viewport{touch-action:none}
body.is-touch{ -webkit-touch-callout:none; }
/* bigger hit targets & no tap-highlight flash */
body.is-touch button{ -webkit-tap-highlight-color:transparent; }
body.is-touch .tool{min-height:52px}
body.is-touch .swatch{width:26px;height:26px}
body.is-touch .handle{width:15px;height:15px}
body.is-touch .ann-comment .pin{width:34px;height:36px}
body.is-touch .ann-comment .pin svg{width:34px;height:36px}

/* Hint shown once on first touch session */
.touch-hint{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);z-index:55;background:var(--ink);color:#fff;border-radius:14px;padding:16px 18px;max-width:300px;box-shadow:var(--shadow);font-size:14px;line-height:1.5;text-align:center}
.touch-hint b{display:block;margin-bottom:8px;font-size:15px}
.touch-hint .gest{display:block;margin:6px 0;color:#cfe0ff}
.touch-hint button{margin-top:12px;background:var(--accent);border:none;color:#fff;border-radius:9px;padding:9px 18px;font-weight:600}

/* ---- compact / bottom-rail layout for small screens ---- */
@media (max-width: 860px){
  :root{ --topbar-h:50px; }
  .lbl-full{display:none}
  .lbl-short{display:inline}

  #topbar{gap:6px;padding:0 8px;overflow:visible;flex-wrap:nowrap}
  #topbar::-webkit-scrollbar{display:none}
  .brand span{display:none}              /* logo only, save space */
  .tbtn{padding:7px 10px}
  #btn-mobile-actions{display:inline-flex;margin-left:auto}

  /* tool rail moves to the bottom as a horizontal scroller */
  #workspace{flex-direction:column}
  #viewport{order:1;padding:14px 10px 14px}
  #annotation-sidebar,#page-sidebar{position:fixed;top:var(--topbar-h);right:0;bottom:76px;width:min(86vw,320px);border-left:1px solid var(--line);box-shadow:-6px 0 24px rgba(16,24,40,.14)}
  #toolrail{
    order:2;width:100%;height:auto;flex:0 0 auto;
    flex-flow:row nowrap;gap:4px;overflow-x:auto;overflow-y:hidden;
    border-right:none;border-top:1px solid var(--line);
    padding:6px 8px calc(6px + env(safe-area-inset-bottom));
    scrollbar-width:none;
  }
  #toolrail::-webkit-scrollbar{display:none}
  .tool{flex:0 0 auto;min-width:62px}

  /* property bar floats just above the bottom tool rail */
  #propbar{
    position:fixed;left:8px;right:8px;bottom:calc(76px + env(safe-area-inset-bottom));
    transform:none;max-width:none;justify-content:flex-start;overflow-x:auto;
    border-radius:12px;padding:7px 8px;scrollbar-width:none;
  }
  #propbar::-webkit-scrollbar{display:none}
  .prop-group{flex:0 0 auto}

  .banner{left:8px;right:8px;transform:none;flex-wrap:wrap;justify-content:center}
  .welcome-card{padding:26px 22px}
  .welcome-card h1{font-size:25px}
  dialog{padding:20px}
}

/* very small phones: tighten the welcome copy */
@media (max-width: 420px){
  .welcome-card{padding:22px 16px}
  .lede{font-size:14.5px}
  .welcome-tips{font-size:12.5px}
}

@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}
}

@media print{
  @page{margin:10mm}
  html,body{height:auto;overflow:visible;background:#fff}
  #topbar,#toolrail,#welcome,#propbar,#annotation-sidebar,#page-sidebar,.banner,.toast,.drop-overlay,.touch-hint{display:none!important}
  #workspace{display:block;height:auto}
  #viewport{overflow:visible;padding:0}
  #pages{display:block}
  .page-slot{width:fit-content!important;height:fit-content!important;margin:0 auto!important;box-shadow:none!important;break-inside:avoid;page-break-inside:avoid;break-after:page;page-break-after:always}
  .page-slot:last-child{break-after:auto;page-break-after:auto}
  .page{position:relative!important;transform:none!important;margin:0 auto}
  .page.has-comments>.bg,.page.has-comments>.bg-html,.page.has-comments>.pdf-text-layer,.page.has-comments>.vector,.page.has-comments>.html-layer,.page.has-comments>.comment-anchor-layer,.page.has-comments>.ui-layer{transform:scale(.72);transform-origin:top left}
  .page.comments-overflow>.bg,.page.comments-overflow>.bg-html,.page.comments-overflow>.pdf-text-layer,.page.comments-overflow>.vector,.page.comments-overflow>.html-layer,.page.comments-overflow>.comment-anchor-layer,.page.comments-overflow>.ui-layer{transform:none}
  .page.comments-overflow .comment-rail,.page.comments-overflow .comment-anchor-layer{display:none}
  .page .comment-rail{left:auto;right:0;width:25%;height:100%}
  .ann-comment{width:calc(100% - 24px);box-sizing:border-box;box-shadow:none;font-size:11px;padding:6px}
  .comment-appendix.active{display:block;width:min(760px,100%);box-sizing:border-box;margin:0 auto;padding:12mm;background:#fff;break-before:page;page-break-before:always;break-after:page;page-break-after:always}
  .comment-appendix .ann-comment{position:relative;top:auto!important;left:auto;width:100%;margin:0 0 10px}
  .ui-layer,.handle{display:none!important}
  .ann.selected{outline:none!important}
}