/* PDF 骑缝章工具 — 样式限定在 .pdfseal-page 内，class 前缀 pdfseal- */

.pdfseal-page {
  --pdfseal-bg-page: #eef2f6;
  --pdfseal-bg-panel: #ffffff;
  --pdfseal-bg-muted: #fafbfc;
  --pdfseal-text: #0f172a;
  --pdfseal-text-sub: #64748b;
  --pdfseal-border: #e2e8f0;
  --pdfseal-border-strong: #cbd5e1;
  --pdfseal-primary: #2563eb;
  --pdfseal-primary-hover: #1d4ed8;
  --pdfseal-radius-sm: 10px;
  --pdfseal-radius-md: 14px;
  --pdfseal-radius-lg: 18px;
  --pdfseal-ease: cubic-bezier(0.25, 0.1, 0.25, 1);
  --pdfseal-dur: 0.18s;
  --pdfseal-shadow: 0 1px 2px rgba(15, 23, 42, 0.04), 0 4px 14px rgba(15, 23, 42, 0.05);
  min-height: 100vh;
  margin: 0;
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  line-height: 1.55;
  color: var(--pdfseal-text);
  background: linear-gradient(180deg, #f8fafc 0%, var(--pdfseal-bg-page) 32%);
}

.pdfseal-page *,
.pdfseal-page *::before,
.pdfseal-page *::after {
  box-sizing: border-box;
}

.pdfseal-header {
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--pdfseal-border);
  padding: 0.7rem 1rem 0.8rem;
  box-shadow: 0 1px 0 rgba(15, 23, 42, 0.04);
}

.pdfseal-header-inner {
  max-width: 1180px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1rem;
  flex-wrap: wrap;
}

.pdfseal-header-main {
  text-align: left;
}

.pdfseal-title {
  margin: 0 0 0.22rem;
  font-size: 1.4rem;
  font-weight: 700;
  color: #0f172a;
  letter-spacing: -0.025em;
  line-height: 1.2;
}

.pdfseal-subtitle {
  margin: 0;
  font-size: 0.8125rem;
  color: var(--pdfseal-text-sub);
  line-height: 1.45;
}

.pdfseal-privacy-tip {
  margin: 0.4rem 0 0;
  font-size: 0.75rem;
  color: var(--pdfseal-text-sub);
  line-height: 1.45;
}

.pdfseal-link-home {
  align-self: center;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--pdfseal-primary);
  text-decoration: none;
  white-space: nowrap;
  padding: 0.36rem 0.72rem;
  border: 1px solid var(--pdfseal-border);
  border-radius: var(--pdfseal-radius-sm);
  background: #fff;
  transition: border-color var(--pdfseal-dur) var(--pdfseal-ease), background var(--pdfseal-dur) var(--pdfseal-ease);
}

.pdfseal-link-home:hover {
  background: #fafbfc;
  border-color: var(--pdfseal-primary);
}

.pdfseal-main {
  max-width: 1180px;
  margin: 0 auto;
  padding: 1.15rem 1.1rem 2rem;
}

.pdfseal-layout {
  display: grid;
  grid-template-columns: minmax(288px, 400px) minmax(0, 1fr);
  gap: 1.1rem;
  align-items: start;
}

@media (max-width: 900px) {
  .pdfseal-layout {
    grid-template-columns: 1fr;
  }
}

.pdfseal-panel {
  background: #fff;
  border: 1px solid var(--pdfseal-border);
  border-radius: var(--pdfseal-radius-lg);
  box-shadow: var(--pdfseal-shadow);
  padding: 1.05rem 1.1rem 1.1rem;
}

.pdfseal-panel-controls {
  background: var(--pdfseal-bg-muted);
}

.pdfseal-panel-preview {
  background: #fff;
}

.pdfseal-panel-title {
  margin: 0 0 0.75rem;
  font-size: 0.98rem;
  font-weight: 600;
  color: #0f172a;
  letter-spacing: -0.01em;
}

.pdfseal-field {
  margin-bottom: 0.75rem;
}

.pdfseal-field:last-child {
  margin-bottom: 0;
}

.pdfseal-label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  color: #2f4a63;
  margin-bottom: 0.35rem;
}

.pdfseal-label--inline {
  display: inline;
  margin-bottom: 0;
}

.pdfseal-label-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  margin-bottom: 0.35rem;
}

.pdfseal-value-badge {
  font-size: 0.76rem;
  font-weight: 600;
  color: var(--pdfseal-primary);
  background: #e8f1fc;
  border: 1px solid #c5daf0;
  padding: 0.2rem 0.5rem;
  border-radius: 6px;
  font-variant-numeric: tabular-nums;
}

.pdfseal-hint {
  margin: 0 0 0.4rem;
  font-size: 0.72rem;
  color: var(--pdfseal-text-sub);
}

.pdfseal-upload-grid {
  display: grid;
  gap: 0.75rem;
  margin-bottom: 0.5rem;
}

.pdfseal-upload-card {
  padding: 0.6rem 0.7rem;
  border: 1px solid var(--pdfseal-border);
  border-radius: var(--pdfseal-radius-md);
  background: #f8fafc;
  margin-bottom: 0;
}

.pdfseal-file-input {
  display: block;
  width: 100%;
  font-size: 0.78rem;
  margin-top: 0.25rem;
}

.pdfseal-filename {
  margin: 0.45rem 0 0;
  font-size: 0.76rem;
  color: #4a6074;
  word-break: break-all;
  line-height: 1.45;
}

.pdfseal-thumb-wrap {
  margin-top: 0.5rem;
  padding: 0.45rem;
  border: 1px dashed var(--pdfseal-border-strong);
  border-radius: 10px;
  background: #fff;
  max-width: 200px;
}

.pdfseal-thumb {
  display: block;
  max-width: 100%;
  max-height: 100px;
  object-fit: contain;
}

.pdfseal-fieldset {
  border: 1px solid var(--pdfseal-border);
  border-radius: var(--pdfseal-radius-md);
  padding: 0.55rem 0.65rem 0.65rem;
  margin: 0 0 0.75rem;
  background: #fafafa;
}

.pdfseal-legend {
  font-size: 0.8rem;
  font-weight: 600;
  color: #2f4a63;
  padding: 0 0.35rem;
}

/* 分段按钮（骑缝位置 / 大小 / 垂直位置） */
.pdfseal-seg {
  display: flex;
  width: 100%;
  padding: 3px;
  border-radius: 10px;
  background: #e8eef5;
  border: 1px solid #d0dce8;
  gap: 3px;
}

.pdfseal-seg--2 .pdfseal-seg-item {
  flex: 1;
}

.pdfseal-seg--3 .pdfseal-seg-item {
  flex: 1;
}

.pdfseal-seg-input {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
  margin: 0;
}

.pdfseal-seg-item {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 2.15rem;
  padding: 0.35rem 0.5rem;
  border-radius: 8px;
  cursor: pointer;
  font-size: 0.82rem;
  font-weight: 500;
  color: #4a5f73;
  transition: background 0.15s ease, color 0.15s ease, box-shadow 0.15s ease;
}

.pdfseal-seg-item:hover {
  color: #1f3a52;
  background: rgba(255, 255, 255, 0.65);
}

.pdfseal-seg-input:focus-visible + .pdfseal-seg-text {
  outline: 2px solid var(--pdfseal-primary);
  outline-offset: 2px;
  border-radius: 4px;
}

.pdfseal-seg-input:checked + .pdfseal-seg-text {
  display: block;
  width: 100%;
  text-align: center;
  padding: 0.28rem 0.2rem;
  border-radius: 7px;
  background: #fff;
  color: var(--pdfseal-primary);
  font-weight: 700;
  box-shadow: 0 1px 4px rgba(28, 105, 194, 0.18);
  border: 1px solid #b8d4ef;
}

.pdfseal-seg-text {
  display: block;
  width: 100%;
  text-align: center;
  pointer-events: none;
}

.pdfseal-margin-row {
  display: flex;
  align-items: center;
  gap: 0.55rem;
}

.pdfseal-range {
  flex: 1;
  min-width: 0;
  height: 0.35rem;
  accent-color: var(--pdfseal-primary);
}

.pdfseal-number {
  width: 4rem;
  padding: 0.32rem 0.45rem;
  border: 1px solid #ccd8e5;
  border-radius: 9px;
  font-size: 0.82rem;
  font-variant-numeric: tabular-nums;
}

.pdfseal-unit {
  font-size: 0.78rem;
  color: var(--pdfseal-text-sub);
  flex-shrink: 0;
}

.pdfseal-field-outname .pdfseal-text {
  margin-top: 0.15rem;
}

.pdfseal-text {
  width: 100%;
  padding: 0.45rem 0.62rem;
  border: 1px solid #ccd8e5;
  border-radius: 9px;
  font-size: 0.85rem;
}

.pdfseal-text,
.pdfseal-number {
  transition: border-color var(--pdfseal-dur) var(--pdfseal-ease), box-shadow var(--pdfseal-dur) var(--pdfseal-ease);
}

.pdfseal-text:focus,
.pdfseal-number:focus {
  outline: none;
  border-color: var(--pdfseal-primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12);
}

/* 位置示意卡片 */
.pdfseal-schematic-card {
  margin: 0.85rem 0 0;
  padding: 0.65rem 0.75rem 0.75rem;
  border: 1px dashed var(--pdfseal-border-strong);
  border-radius: var(--pdfseal-radius-md);
  background: linear-gradient(180deg, #f8fbff 0%, #f2f6fb 100%);
}

.pdfseal-schematic-title {
  margin: 0 0 0.2rem;
  font-size: 0.82rem;
  font-weight: 600;
  color: #2f4a63;
}

.pdfseal-schematic-desc {
  margin: 0 0 0.55rem;
  font-size: 0.7rem;
  color: #7a8fa3;
}

.pdfseal-schematic {
  display: flex;
  justify-content: center;
  padding: 0.35rem 0;
}

.pdfseal-schematic-paper {
  position: relative;
  width: 112px;
  height: 156px;
  background: #fff;
  border: 2px solid #b8c9db;
  border-radius: 6px;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.8);
}

.pdfseal-schematic-strip {
  position: absolute;
  width: 14%;
  min-width: 10px;
  border-radius: 3px;
  background: linear-gradient(180deg, #4a8fd9 0%, var(--pdfseal-primary) 55%, #155a9e 100%);
  box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.06);
  transition: top 0.2s ease, height 0.2s ease, left 0.2s ease, right 0.2s ease;
}

.pdfseal-schematic-strip--left {
  left: 4px;
  right: auto;
}

.pdfseal-schematic-strip--right {
  right: 4px;
  left: auto;
}

.pdfseal-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin-top: 0.95rem;
}

.pdfseal-btn {
  cursor: pointer;
  font-size: 0.8125rem;
  font-weight: 600;
  border-radius: var(--pdfseal-radius-md);
  padding: 0.48rem 0.95rem;
  min-height: 2.35rem;
  border: 1px solid transparent;
  font-family: inherit;
  transition: background var(--pdfseal-dur) var(--pdfseal-ease), border-color var(--pdfseal-dur) var(--pdfseal-ease),
    box-shadow var(--pdfseal-dur) var(--pdfseal-ease), transform var(--pdfseal-dur) var(--pdfseal-ease),
    opacity var(--pdfseal-dur) var(--pdfseal-ease);
}

.pdfseal-btn-primary {
  background: var(--pdfseal-primary);
  color: #fff;
  border-color: #1d4ed8;
  box-shadow: 0 1px 2px rgba(15, 23, 42, 0.06), 0 2px 8px rgba(37, 99, 235, 0.18);
}

.pdfseal-btn-primary:hover:not(:disabled) {
  background: var(--pdfseal-primary-hover);
  border-color: var(--pdfseal-primary-hover);
}

.pdfseal-btn-secondary {
  background: #fff;
  color: #2f4a63;
  border-color: var(--pdfseal-border-strong);
}

.pdfseal-btn-secondary:hover:not(:disabled) {
  border-color: var(--pdfseal-primary);
  color: var(--pdfseal-primary);
}

.pdfseal-btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.pdfseal-warning {
  margin-top: 0.75rem;
  padding: 0.5rem 0.62rem;
  font-size: 0.76rem;
  color: #856404;
  background: #fff8e6;
  border: 1px solid #f0e0a8;
  border-radius: 9px;
}

.pdfseal-file-info {
  font-size: 0.8rem;
  color: var(--pdfseal-text-sub);
  margin-bottom: 0.65rem;
  line-height: 1.5;
}

.pdfseal-file-info-placeholder {
  margin: 0;
  color: #8a9bab;
}

.pdfseal-file-info p {
  margin: 0.18rem 0;
}

.pdfseal-error {
  margin-bottom: 0.65rem;
  padding: 0.5rem 0.62rem;
  font-size: 0.8rem;
  color: #b71c1c;
  background: #ffebee;
  border: 1px solid #ffcdd2;
  border-radius: 9px;
}

/* 右侧预览区：idle / loading / canvas 分层 */
.pdfseal-preview-wrap {
  position: relative;
  border: 1px solid var(--pdfseal-border);
  border-radius: var(--pdfseal-radius-md);
  background: linear-gradient(180deg, #f1f5f9 0%, #e2e8f0 100%);
  padding: 0.65rem;
  min-height: 200px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.6);
}

.pdfseal-preview-idle {
  text-align: center;
  padding: 1.25rem 0.85rem;
  max-width: 260px;
}

.pdfseal-preview-idle[hidden] {
  display: none !important;
}

.pdfseal-preview-idle-text {
  margin: 0 0 0.35rem;
  font-size: 0.92rem;
  font-weight: 600;
  color: #5a7288;
}

.pdfseal-preview-idle-hint {
  margin: 0;
  font-size: 0.76rem;
  color: #8a9bab;
  line-height: 1.45;
}

.pdfseal-preview-canvas-wrap {
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.pdfseal-preview-canvas-wrap[hidden] {
  display: none !important;
}

.pdfseal-preview-canvas {
  display: block;
  max-width: 100%;
  height: auto;
  background: #fff;
  box-shadow: 0 2px 12px rgba(15, 23, 42, 0.1), 0 0 0 1px rgba(15, 23, 42, 0.04);
  border-radius: var(--pdfseal-radius-md);
}

.pdfseal-preview-note {
  margin: 0.55rem 0 0;
  font-size: 0.72rem;
  color: var(--pdfseal-text-sub);
  text-align: center;
  max-width: 420px;
  line-height: 1.45;
}

/* loading：必须覆盖 flex，否则 HTML hidden 无效 */
.pdfseal-loading {
  position: absolute;
  inset: 0;
  z-index: 3;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  background: rgba(255, 255, 255, 0.9);
  border-radius: var(--pdfseal-radius-md);
}

.pdfseal-loading[hidden] {
  display: none !important;
}

.pdfseal-loading:not([hidden]) {
  display: flex;
}

.pdfseal-spinner {
  width: 36px;
  height: 36px;
  border: 3px solid var(--pdfseal-border);
  border-top-color: var(--pdfseal-primary);
  border-radius: 50%;
  animation: pdfseal-spin 0.75s linear infinite;
}

@keyframes pdfseal-spin {
  to {
    transform: rotate(360deg);
  }
}

.pdfseal-loading-text {
  font-size: 0.85rem;
  color: var(--pdfseal-text-sub);
}

.pdfseal-download-wrap {
  margin-top: 0.85rem;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.pdfseal-download-auth {
  padding: 0.5rem 0.65rem;
  border-radius: var(--pdfseal-radius-md);
  background: #f8fafc;
  border: 1px solid var(--pdfseal-border);
}

.pdfseal-download-auth[hidden] {
  display: none !important;
}

.pdfseal-download-hint {
  margin: 0 0 0.45rem;
  font-size: 0.78rem;
  color: #5f7388;
  line-height: 1.45;
}

.pdfseal-link-login {
  display: inline-flex;
  align-items: center;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--pdfseal-primary);
  text-decoration: none;
}

.pdfseal-link-login:hover {
  text-decoration: underline;
}

.pdfseal-btn--download-guest {
  background: #fff;
  color: var(--pdfseal-primary);
  border-color: #93b9e8;
  box-shadow: none;
}

.pdfseal-btn--download-guest:hover {
  background: #f5f9ff;
  border-color: var(--pdfseal-primary);
  color: var(--pdfseal-primary-hover);
}

.pdfseal-toast {
  position: fixed;
  left: 50%;
  bottom: 1.35rem;
  transform: translateX(-50%);
  z-index: 4000;
  max-width: calc(100% - 2rem);
  padding: 0.6rem 1.15rem;
  font-size: 0.88rem;
  color: #fff;
  background: #334155;
  border-radius: 10px;
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.18);
  text-align: center;
}

.pdfseal-toast[hidden] {
  display: none !important;
}

.pdfseal-footer {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 1rem 2rem;
}

.pdfseal-footer-block {
  margin-bottom: 1.35rem;
  padding-bottom: 1.1rem;
  border-bottom: 1px solid var(--pdfseal-border);
}

.pdfseal-footer-block:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.pdfseal-footer-title {
  font-size: 0.9rem;
  font-weight: 600;
  color: #0f172a;
  margin: 0 0 0.45rem;
  letter-spacing: -0.01em;
}

.pdfseal-footer-list {
  margin: 0;
  padding-left: 1.25rem;
  font-size: 0.82rem;
  color: var(--pdfseal-text-sub);
}

.pdfseal-footer-list li {
  margin-bottom: 0.35rem;
}

.pdfseal-faq {
  margin: 0;
  font-size: 0.82rem;
  color: var(--pdfseal-text-sub);
}

.pdfseal-faq dt {
  font-weight: 600;
  color: var(--pdfseal-text);
  margin-top: 0.65rem;
}

.pdfseal-faq dt:first-child {
  margin-top: 0;
}

.pdfseal-faq dd {
  margin: 0.2rem 0 0;
  padding-left: 0;
}

@media (max-width: 600px) {
  .pdfseal-seg-item {
    min-height: 2.35rem;
    font-size: 0.78rem;
  }
}