* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: system-ui, "PingFang SC", "Microsoft YaHei", sans-serif;
  background: #f4f5f7;
  color: #222;
}
header {
  padding: 16px 20px;
  background: #fff;
  border-bottom: 1px solid #e3e5e8;
}
header h1 { margin: 0; font-size: 20px; }
header .sub { margin: 4px 0 0; color: #888; font-size: 13px; }

main {
  display: flex;
  gap: 20px;
  padding: 20px;
  align-items: flex-start;
  flex-wrap: wrap;
}
.controls {
  width: 320px;
  background: #fff;
  padding: 16px;
  border-radius: 10px;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.06);
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.controls label {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 13px;
  color: #444;
}
.controls textarea,
.controls input[type="text"],
.controls input[type="number"],
.controls select {
  padding: 8px;
  border: 1px solid #ccd0d5;
  border-radius: 6px;
  font-size: 14px;
}
.controls .row { display: flex; gap: 12px; }
.controls .row label { flex: 1; }
.controls .check { flex-direction: row; align-items: center; gap: 6px; }
.controls input[type="range"] { width: 100%; }
.actions { display: flex; gap: 10px; margin-top: 4px; }
.actions button {
  flex: 1;
  padding: 10px;
  border: none;
  border-radius: 6px;
  background: #2f6fed;
  color: #fff;
  font-size: 14px;
  cursor: pointer;
}
.actions button:hover { background: #2559c9; }

.preview-wrap { flex: 1; min-width: 320px; }
.preview-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  margin-bottom: 10px;
}
.preview-bar button {
  width: 36px;
  height: 36px;
  border: 1px solid #ccd0d5;
  background: #fff;
  border-radius: 6px;
  font-size: 18px;
  cursor: pointer;
}
.preview-bar button:disabled { opacity: 0.4; cursor: default; }
.preview-box {
  background: #fff;
  padding: 12px;
  border-radius: 10px;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.06);
  overflow: auto;
  display: flex;
  justify-content: center;
}
#preview { background: #fff; max-width: 100%; }

/* 步骤导航 */
.steps {
  display: flex;
  gap: 8px;
  padding: 10px 20px;
  background: #fff;
  border-bottom: 1px solid #e3e5e8;
}
.step {
  padding: 8px 14px;
  border: 1px solid #ccd0d5;
  background: #fff;
  border-radius: 20px;
  font-size: 13px;
  cursor: pointer;
}
.step.active { background: #2f6fed; color: #fff; border-color: #2f6fed; }
.step:disabled { opacity: 0.45; cursor: default; }

.step-panel.hidden { display: none; }
.status { color: #666; font-size: 13px; margin: 2px 0 0; }
.layout-info {
  font-size: 13px;
  color: #1a73e8;
  background: #eef4ff;
  border: 1px solid #cfe0ff;
  border-radius: 6px;
  padding: 6px 10px;
  margin: 2px 0 0;
}
.primary { background: #1aa463 !important; color: #fff !important; }
.primary:hover { background: #15894f !important; }

/* 拍照步骤 */
.capture-main {
  display: flex;
  gap: 20px;
  padding: 20px;
  flex-wrap: wrap;
  align-items: flex-start;
}
.capture-controls { width: 340px; display: flex; flex-direction: column; gap: 12px; }
.capture-controls .actions { display: flex; gap: 10px; flex-wrap: wrap; }
.capture-controls .actions button,
.file-btn {
  flex: 1;
  padding: 10px;
  border: 1px solid #ccd0d5;
  border-radius: 6px;
  background: #fff;
  color: #222;
  font-size: 14px;
  cursor: pointer;
  text-align: center;
}
.file-btn input { display: none; }
.capture-preview {
  flex: 1;
  min-width: 320px;
  background: #fff;
  padding: 12px;
  border-radius: 10px;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.06);
  display: flex;
  justify-content: center;
  align-items: flex-start;
}
#video, #photo { max-width: 100%; border-radius: 6px; background: #000; }
.hidden { display: none !important; }

.placeholder { padding: 40px; color: #666; }
.placeholder h2 { margin-top: 0; }

/* 打印：只显示字帖页 */
#printArea { display: none; }
#printArea img { width: 100%; display: block; page-break-after: always; }
@media print {
  body * { display: none !important; }
  #printArea, #printArea * { display: block !important; }
  @page { size: A4; margin: 0; }
}