body {
  background: #f9f9f9;
  font-family: sans-serif;
  margin: 0;
  padding: 0;
}
#app {
  max-width: 1100px;
  margin: 26px auto;
  padding: 12px;
  background: #fff;
  border-radius: 12px;
  box-shadow: 0 3px 30px rgba(0,0,0,0.06);
  min-height: 80vh;
  /* CHANGE: stack children vertically! */
  display: flex;
  flex-direction: column;
  gap: 0;
}
.row-flex {
  display: flex;
  flex-direction: row;
  gap: 0;
}
.sidebar {
  width: 210px;
  background: #f2f4fa;
  border-radius: 10px 0 0 10px;
  padding: 12px 8px;
  display: flex;
  flex-direction: column;
  gap: 18px;
  border-right: 1.5px solid #e3e7f2;
  min-height: 80vh;
}
.page-list {
  flex: 1;
}
.page-list strong {
  font-size: 1.1em;
}
.page-list ul {
  list-style: none;
  padding: 0;
  margin: 0;
}
.page-list li {
  margin-bottom: 6px;
  display: flex;
  align-items: center;
  gap: 5px;
}
.page-list button {
  border: none;
  background: none;
  color: #0057ff;
  font-size: 1em;
  cursor: pointer;
  text-align: left;
  padding: 0 4px;
  border-radius: 4px;
  transition: background 0.14s;
}
.page-list button.active {
  background: #0057ff;
  color: #fff;
}
.page-list .img-filename {
  font-size: 0.95em;
  color: #222;
  margin-left: 2px;
}
.page-actions {
  margin-top: 5px;
  display: flex;
  gap: 5px;
  flex-wrap: wrap;
}
.block-controls {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.block-controls button {
  background: #0057ff;
  color: #fff;
  border: none;
  border-radius: 4px;
  margin-bottom: 2px;
  padding: 5px 10px;
  cursor: pointer;
  font-size: 1em;
  text-align: left;
  transition: background 0.14s;
}
.block-controls button:hover {
  background: #003fa1;
}
.mainpanel {
  flex: 1;
  padding: 0 0 0 30px;
}
.header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 12px;
}
.header h1 {
  flex: 1;
  font-size: 1.4em;
  margin: 0;
}
.editor-canvas-wrap {
  display: flex;
  justify-content: flex-start;
  align-items: flex-start;
  gap: 24px;
}
.editor-canvas {
  position: relative;
  width: 360px;
  height: 640px;
  background: #222;
  box-shadow: 0 2px 16px rgba(0,0,0,0.14);
  overflow: hidden;
  border-radius: 16px;
  margin-bottom: 8px;
}
.editor-canvas img.bg {
  width: 100%;
  height: 100%;
  object-fit: cover;
  pointer-events: none;
  position: absolute;
  top: 0; left: 0;
  z-index: 1;
}
.text-block {
  position: absolute;
  min-width: 60px;
  min-height: 24px;
  border: 2px dashed #77aaff;
  background: rgba(255,255,255,0.28);
  cursor: move;
  resize: both;
  overflow: hidden;
  box-sizing: border-box;
  z-index: 2;
  padding: 0;
}

.text-block.selected {
  border: 2px solid #0057ff;
  background: rgba(255,255,255,0.40);
}
.text-block .block-content {
  direction: ltr !important;
  unicode-bidi: plaintext !important;
  writing-mode: horizontal-tb !important;
  width: 100%;
  min-height: 24px;
  height: auto;
  outline: none;
  background: transparent;
  border: none;
  resize: none;
  font: inherit;
  color: inherit;
  text-align: left;
  padding: 0;
  margin: 0;
  overflow-y: auto;
  overflow-wrap: break-word;
  white-space: pre-wrap;
  display: block;
  vertical-align: top;
  max-height: none;
}
.text-block .block-label {
  position: absolute;
  top: -20px;
  left: 0;
  font-size: 0.8em;
  background: #eef;
  color: #223;
  border-radius: 4px 4px 0 0;
  padding: 0 4px;
  pointer-events: none;
  opacity: 0.65;
}
.block-settings {
  margin: 8px 0;
  display: flex;
  gap: 9px;
  flex-wrap: wrap;
  align-items: center;
}
input[type="color"], input[type="number"], select {
  margin-right: 6px;
}
button {
  background: #0057ff;
  color: #fff;
  border: none;
  border-radius: 4px;
  padding: 6px 12px;
  cursor: pointer;
  font-size: 1em;
  transition: background 0.16s;
}
button:disabled {
  background: #aaa;
  cursor: not-allowed;
}
button.danger {
  background: #d33;
}
.save-area {
  margin-top: 18px;
  text-align: right;
}
.page-img-thumb {
  width: 28px;
  height: 28px;
  object-fit: cover;
  border-radius: 5px;
  border: 1.5px solid #ddd;
  margin-right: 4px;
  vertical-align: middle;
}
@media (max-width: 950px) {
  #app {
    max-width: 100vw;
    margin: 0;
    padding: 0;
    border-radius: 0;
    box-shadow: none;
    min-height: 100vh;
    flex-direction: column;
  }
  .sidebar {
    width: 100vw;
    min-height: unset;
    border-radius: 0;
    border-right: none;
    border-bottom: 2px solid #e3e7f2;
    flex-direction: row;
    gap: 20px;
  }
  .mainpanel {
    padding: 0;
  }
}