:root {
  --bg: #f4f6f8;
  --card: #ffffff;
  --ink: #1f2933;
  --muted: #6b7785;
  --border: #d7dee5;
  --brand: #d6453d;
  --brand-dark: #b5362f;
  --accent: #2f80ed;
  --ok: #1e8e4e;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.5;
}

.wrap { max-width: 880px; margin: 0 auto; padding: 0 20px; }

.topbar {
  background: var(--card);
  border-bottom: 1px solid var(--border);
  padding: 18px 0;
}
.topbar .wrap { display: flex; align-items: baseline; gap: 16px; flex-wrap: wrap; }
.logo {
  font-size: 28px;
  font-weight: 800;
  letter-spacing: -1px;
  color: var(--ink);
  text-decoration: none;
}
.logo span { color: var(--brand); }
.tagline { color: var(--muted); font-size: 14px; }

.tabs {
  display: flex;
  gap: 6px;
  margin-top: 18px;
  flex-wrap: wrap;
}
.tab {
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--muted);
  padding: 9px 16px;
  border-radius: 8px 8px 0 0;
  cursor: pointer;
  font-size: 14px;
  font-weight: 600;
}
.tab.active {
  color: var(--brand);
  border-bottom-color: var(--card);
  background: var(--card);
}

main.wrap { margin-top: -1px; }

.panel {
  display: none;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 0 10px 10px 10px;
  padding: 26px;
}
.panel.active { display: block; }
.panel h2 { font-size: 20px; margin-bottom: 4px; }
.hint { color: var(--muted); font-size: 14px; margin-bottom: 18px; }

.dropzone {
  border: 2px dashed var(--border);
  border-radius: 10px;
  padding: 38px 20px;
  text-align: center;
  color: var(--muted);
  cursor: pointer;
  transition: border-color .15s, background .15s;
}
.dropzone:hover, .dropzone.drag {
  border-color: var(--brand);
  background: #fcf2f1;
}
.dropzone .link { color: var(--accent); text-decoration: underline; }

.filelist { list-style: none; margin: 16px 0 0; }
.filelist li {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  margin-bottom: 8px;
  background: #fbfcfd;
  font-size: 14px;
}
.filelist.sortable li { cursor: grab; }
.filelist li.dragging { opacity: .4; }
.filelist li .grip { color: var(--muted); cursor: grab; }
.filelist li .name { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.filelist li .size { color: var(--muted); font-size: 12px; }
.filelist li .rm {
  border: none; background: none; color: var(--brand);
  cursor: pointer; font-size: 16px; line-height: 1; padding: 2px 6px;
}

.field {
  display: block;
  margin: 18px 0;
  font-size: 14px;
  font-weight: 600;
  color: var(--muted);
}
.field select,
.field input[type="text"],
.field input[type="password"],
.field input[type="number"] {
  display: block;
  margin-top: 6px;
  width: 100%;
  max-width: 320px;
  padding: 9px 10px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 14px;
  background: #fff;
}
fieldset.field {
  border: none;
  padding: 0;
}
.field .radio {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-right: 18px;
  font-weight: 500;
}
.field .radio input { margin: 0; }

.go {
  margin-top: 8px;
  background: var(--brand);
  color: #fff;
  border: none;
  padding: 12px 22px;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
}
.go:hover { background: var(--brand-dark); }
.go:disabled { background: #c2cad2; cursor: not-allowed; }

/* Editor page grid */
.pagegrid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
  gap: 14px;
  margin: 18px 0;
}
.pagecard {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px;
  background: #fbfcfd;
  text-align: center;
  cursor: grab;
  position: relative;
}
.pagecard.dragging { opacity: .4; }
.pagecard.deleted { opacity: .35; filter: grayscale(1); }
.pagecard img {
  width: 100%;
  height: auto;
  border: 1px solid var(--border);
  background: #fff;
  transition: transform .15s;
}
.pagecard .pnum { font-size: 12px; color: var(--muted); margin-top: 6px; }
.pagecard .ops { display: flex; justify-content: center; gap: 4px; margin-top: 6px; }
.pagecard .ops button {
  border: 1px solid var(--border);
  background: #fff;
  border-radius: 6px;
  padding: 3px 7px;
  cursor: pointer;
  font-size: 12px;
}
.pagecard .ops button:hover { background: #eef2f6; }

/* Content editor (annotate) */
.annotbar {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  margin: 16px 0;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: #fbfcfd;
  position: sticky;
  top: 0;
  z-index: 5;
}
.toolgroup { display: flex; gap: 4px; }
.atool {
  width: 36px;
  height: 34px;
  border: 1px solid var(--border);
  background: #fff;
  border-radius: 8px;
  cursor: pointer;
  font-size: 15px;
  font-weight: 700;
  color: var(--ink);
}
.atool:hover { background: #eef2f6; }
.atool.active { background: var(--brand); color: #fff; border-color: var(--brand); }
.annotctl {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 600;
  color: var(--muted);
}
.annotctl input[type="color"] { width: 30px; height: 26px; border: 1px solid var(--border); border-radius: 6px; padding: 0; background: #fff; cursor: pointer; }
.annotctl input[type="range"] { width: 110px; }
#annot-size-val { min-width: 18px; text-align: right; color: var(--ink); }
button.annotctl {
  border: 1px solid var(--border);
  background: #fff;
  border-radius: 8px;
  padding: 7px 12px;
  cursor: pointer;
  color: var(--ink);
}
button.annotctl:hover { background: #eef2f6; }

.pagestack { margin: 18px 0; }
.pagewrap {
  position: relative;
  max-width: 720px;
  margin: 0 auto 18px;
  border: 1px solid var(--border);
  border-radius: 6px;
  overflow: hidden;
  box-shadow: 0 1px 4px rgba(0,0,0,.06);
  background: #fff;
}
.pagewrap .pageimg { display: block; width: 100%; height: auto; }
.pagewrap .pagecanvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  touch-action: none;
  cursor: crosshair;
}
.pagewrap .pagelabel {
  position: absolute;
  top: 6px;
  left: 8px;
  font-size: 11px;
  color: var(--muted);
  background: rgba(255,255,255,.8);
  padding: 1px 6px;
  border-radius: 6px;
  pointer-events: none;
}
.textedit {
  position: absolute;
  z-index: 6;
  min-width: 80px;
  background: rgba(255,255,255,.9);
  border: 1px dashed var(--brand);
  border-radius: 4px;
  padding: 2px 4px;
  font-family: -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.25;
  resize: both;
  overflow: hidden;
}

.status {
  margin-top: 18px;
  padding: 12px 16px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
}
.status.info { background: #eaf2fd; color: var(--accent); }
.status.hint { background: #eaf2fd; color: var(--accent); }
.status.ok { background: #e6f4ec; color: var(--ok); }
.status.err { background: #fdecea; color: var(--brand-dark); }

.progress {
  margin-top: 18px;
  height: 4px;
  border-radius: 4px;
  background: #e3e9ef;
  overflow: hidden;
}
.progress .bar {
  width: 40%;
  height: 100%;
  border-radius: 4px;
  background: var(--brand);
  animation: indeterminate 1.1s ease-in-out infinite;
}
@keyframes indeterminate {
  0%   { transform: translateX(-100%); }
  100% { transform: translateX(350%); }
}

.about {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 26px;
  margin-top: 22px;
}
.about h2 { font-size: 20px; margin-bottom: 8px; }
.about h3 { font-size: 15px; margin: 18px 0 6px; }
.about p { color: var(--muted); font-size: 14px; }
.about ul { margin: 6px 0 0 18px; }
.about li { color: var(--muted); font-size: 14px; margin: 2px 0; }
.about strong { color: var(--ink); }

.foot { color: var(--muted); font-size: 13px; text-align: center; padding: 26px 0; }