/* Mobile-first, red & white theme, rounded cards, soft shadows */
:root{
  --red:#e53935; --white:#fff; --muted:#f6f6f6; --card-shadow: 0 6px 18px rgba(0,0,0,0.08);
  --radius:12px; --accent:#c62828;
}
*{box-sizing:border-box}
body{font-family:Inter,system-ui,Segoe UI,Helvetica,Arial; margin:0;background:var(--muted);color:#222}
.topbar{position:sticky;top:0;z-index:50;background:linear-gradient(90deg,var(--white),#fff);display:flex;align-items:center;justify-content:space-between;padding:10px 16px;border-bottom:1px solid #eee;box-shadow:0 2px 6px rgba(0,0,0,0.03)}
.brand{font-weight:700;color:var(--red)}
.btn{border:0;padding:8px 12px;border-radius:8px;background:#fff;cursor:pointer;margin-left:8px}
.btn.primary{background:var(--red);color:#fff;box-shadow:0 6px 12px rgba(229,57,53,0.12)}
.container{display:flex;gap:16px;padding:16px}
.sidebar{width:220px}
.card{background:var(--white);padding:12px;border-radius:var(--radius);box-shadow:var(--card-shadow)}
.tool-list{display:flex;flex-direction:column;gap:8px}
.tool{padding:10px;border-radius:10px;border:1px solid #f0f0f0;background:#fff;cursor:pointer;text-align:left}
.upload-card{margin-bottom:12px}
.dropzone{padding:28px;border:2px dashed #f1f1f1;border-radius:10px;text-align:center;color:#666}
.upload-link{color:var(--red);cursor:pointer}
.preview-area{margin-bottom:12px}
.thumbs{display:flex;flex-wrap:wrap;gap:10px}
.thumb{width:110px;border-radius:8px;overflow:hidden;box-shadow:0 6px 18px rgba(0,0,0,0.06);cursor:grab;position:relative}
.thumb img{width:100%;display:block}
.thumb .meta{padding:6px;font-size:12px;background:#fff}
.canvas-area{min-height:400px}
.page-container{display:flex;flex-direction:column;gap:18px;padding:12px}
.page{background:#fff;border-radius:8px;overflow:hidden;position:relative;align-self:center;box-shadow:var(--card-shadow)}
.page canvas{display:block}
.overlay-element{position:absolute;border:1px dashed transparent;padding:4px;cursor:move}
.overlay-element img{display:block;max-width:100%;height:auto}
.overlay-element.selected{border-color:rgba(0,0,0,0.3)}
.overlay-element{font-size:16px;line-height:1.2;min-width:40px}
/* editable text overlays styling */
.overlay-element[contenteditable='true']{
  cursor:text;
  outline: 2px dashed var(--accent);
  background: rgba(255,255,255,0.95);
}
.overlay-element p{margin:0}

/* PDF text layer styling */
.pdf-text-layer{pointer-events:auto}
.pdf-text{cursor:text; user-select:text; padding:1px 2px;}
.pdf-text[contenteditable='true']{outline:2px dashed var(--accent); background:rgba(255,255,255,0.95)}
.resize-handle{width:12px;height:12px;border-radius:2px;background:#fff;border:1px solid #ccc;position:absolute;right:-6px;bottom:-6px;cursor:se-resize;box-shadow:0 2px 6px rgba(0,0,0,0.12)}
.rotate-handle{width:12px;height:12px;border-radius:50%;background:var(--red);position:absolute;left:50%;transform:translateX(-50%);top:-18px;cursor:pointer}
.draw-canvas{position:absolute;left:0;top:0;width:100%;height:100%;pointer-events:none}
.overlay-element .handle{width:10px;height:10px;background:#fff;border:1px solid #ccc;position:absolute;z-index:3}
.overlay-element .handle.tl{left:-6px;top:-6px;cursor:nw-resize}
.overlay-element .handle.tr{right:-6px;top:-6px;cursor:ne-resize}
.overlay-element .handle.bl{left:-6px;bottom:-6px;cursor:sw-resize}
.overlay-element .handle.br{right:-6px;bottom:-6px;cursor:se-resize}

/* header small actions */
.topbar .actions .btn{font-size:13px;padding:6px 8px}
.drawing-enabled .draw-canvas{pointer-events:auto}
.toast{position:fixed;right:16px;bottom:16px;background:#222;color:#fff;padding:10px 14px;border-radius:10px;opacity:0;transform:translateY(12px);transition:all .28s ease}
.toast.show{opacity:1;transform:translateY(0)}
.progress-area{margin-top:8px}
.mobile-toolbar{position:fixed;left:50%;transform:translateX(-50%);bottom:12px;background:rgba(255,255,255,0.98);padding:8px;border-radius:30px;display:flex;gap:6px;box-shadow:var(--card-shadow)}
@media(min-width:900px){
  .container{padding:24px}
}
@media(max-width:899px){
  .container{flex-direction:column}
  .sidebar{display:none}
}