:root {
  color-scheme: light;
  --bg: #f3f5f9;
  --panel: #ffffff;
  --text: #111827;
  --muted: #667085;
  --line: #d8dee8;
  --line-soft: #edf0f5;
  --primary: #165dff;
  --primary-dark: #0f45c9;
  --danger: #c81e3a;
  --ok: #067647;
  --warning: #a15c07;
  --shadow: 0 24px 64px rgba(15, 23, 42, 0.14);
  font-family: Inter, "Segoe UI", "Microsoft YaHei", sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
}

[hidden] { display: none !important; }

button,
input,
textarea {
  font: inherit;
}

button,
.link-button {
  border: 0;
  border-radius: 10px;
  padding: 10px 16px;
  cursor: pointer;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  transition: 0.16s ease;
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.55;
}

.primary {
  background: var(--primary);
  color: #fff;
}

.primary:hover { background: var(--primary-dark); }

.ghost {
  background: #eef2f7;
  color: #253044;
}

.ghost:hover { background: #e1e7f0; }

.danger {
  background: var(--danger);
  color: #fff;
}

.danger:hover { background: #a5112c; }

.text-danger {
  color: var(--danger);
  background: transparent;
  padding: 0;
}

input,
textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 11px 13px;
  background: #fff;
  outline: none;
}

input:focus,
textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(22, 93, 255, 0.12);
}

.muted,
small { color: var(--muted); }

.auth-page {
  min-height: 100vh;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, #101828 0%, #243b67 50%, #f3f5f9 50%);
}

.login-card {
  width: min(420px, calc(100vw - 32px));
  background: rgba(255, 255, 255, 0.96);
  border: 1px solid rgba(255, 255, 255, 0.72);
  border-radius: 22px;
  padding: 34px;
  box-shadow: var(--shadow);
}

.brand-mark {
  width: fit-content;
  color: #fff;
  background: #101828;
  border-radius: 8px;
  padding: 5px 10px 5px 5px;
  font-weight: 800;
  letter-spacing: 0.04em;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.brand-mark img {
  width: 30px;
  height: 30px;
  border-radius: 6px;
}

.login-card h1 { margin: 18px 0 6px; }
.login-card p { color: var(--muted); margin: 0 0 24px; }

.stack {
  display: grid;
  gap: 16px;
}

.stack label {
  display: grid;
  gap: 8px;
  color: #344054;
  font-weight: 600;
}

.message { color: var(--danger); min-height: 20px; }
.success-message { color: var(--ok); }

.admin-body {
  min-height: 100vh;
  background: var(--bg);
  --admin-radius: 10px;
  --admin-control-radius: 7px;
}

.admin-body button,
.admin-body .link-button {
  min-height: 34px;
  border-radius: var(--admin-control-radius);
  padding: 7px 12px;
}

.admin-body input,
.admin-body textarea {
  border-radius: var(--admin-control-radius);
  padding: 9px 11px;
}

.admin-body button:focus-visible,
.admin-body .link-button:focus-visible,
.admin-body input:focus-visible,
.admin-body textarea:focus-visible {
  outline: 2px solid rgba(22, 93, 255, 0.32);
  outline-offset: 2px;
}

.admin-topbar {
  height: 58px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  background: #ffffff;
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 20;
}

.admin-brand {
  display: flex;
  align-items: center;
  gap: 10px;
}

.brand-icon {
  width: 34px;
  height: 34px;
  border-radius: 8px;
  display: block;
}

.admin-topbar-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.admin-brand strong {
  display: block;
  font-size: 16px;
}

.admin-brand span {
  display: block;
  color: var(--muted);
  font-size: 12px;
  margin-top: 1px;
}

.admin-main {
  max-width: 1480px;
  margin: 0 auto;
  padding: 20px 24px 32px;
}

.page-title-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 16px;
}

.page-title-row h1 {
  margin: 0 0 4px;
  font-size: 25px;
  line-height: 1.25;
}

.page-title-row p { margin: 0; color: var(--muted); font-size: 13px; }

.admin-card,
.subpanel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--admin-radius);
  box-shadow: none;
}

.admin-card { overflow: hidden; }

.table-toolbar,
.pagination-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 11px 14px;
  min-height: 52px;
}

.table-toolbar { border-bottom: 1px solid var(--line-soft); }
.pagination-bar { border-top: 1px solid var(--line-soft); }

.task-table-wrap { overflow-x: auto; }

.task-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 1080px;
}

.task-table th,
.task-table td {
  padding: 10px 14px;
  border-bottom: 1px solid var(--line-soft);
  text-align: left;
  vertical-align: middle;
  font-size: 13px;
}

.task-table th {
  background: #f8fafc;
  color: #475467;
  font-size: 12px;
  font-weight: 700;
  white-space: nowrap;
}

.task-table tr:hover td { background: #fbfdff; }

.task-title-cell {
  display: grid;
  gap: 3px;
  min-width: 220px;
}

.task-title-cell strong { font-size: 14px; }
.task-title-cell span { color: var(--muted); max-width: 360px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

.compact-button { min-height: 30px !important; padding: 5px 9px !important; }
.empty-table { text-align: center !important; color: var(--muted); padding: 42px !important; }

.numeric-cell,
.time-cell,
.task-table td:nth-child(n+3):nth-child(-n+8) {
  font-variant-numeric: tabular-nums;
}

.time-cell { white-space: nowrap; }

.status-pill {
  border-radius: 999px;
  padding: 4px 8px;
  background: #eef2f7;
  color: #344054;
  font-size: 12px;
  font-weight: 700;
  white-space: nowrap;
}

.status-pill[data-status="active"] { background: #e8f0ff; color: var(--primary); }
.status-pill[data-status="completed"] { background: #e8f8f1; color: var(--ok); }
.status-pill[data-status="closed"] { background: #fff1f3; color: var(--danger); }
.status-pill[data-status="new"] { background: #eef2f7; color: #475467; }
.status-pill[data-status="opened"],
.status-pill[data-status="signing"] { background: #e8f0ff; color: var(--primary); }
.status-pill[data-status="revoked"] { background: #fff1f3; color: var(--danger); }

dialog {
  border: 0;
  border-radius: 12px;
  padding: 0;
  box-shadow: var(--shadow);
}

dialog:not([open]) { display: none; }

dialog::backdrop { background: rgba(15, 23, 42, 0.42); }

.admin-dialog { max-width: calc(100vw - 28px); }
.dialog-form { padding: 20px; width: min(560px, calc(100vw - 28px)); }
.dialog-form h2 { margin: 0; }

.dialog-title-row,
.section-title-row,
.detail-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
}

.dialog-title-row p { color: var(--muted); margin: 6px 0 0; }

.icon-button {
  width: 34px;
  height: 34px;
  padding: 0;
  border-radius: 7px !important;
  background: #eef2f7;
  color: #344054;
  font-size: 22px;
  line-height: 1;
}

.dialog-actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  margin-top: 8px;
}

.share-qr-dialog {
  width: min(420px, calc(100vw - 28px));
}

.share-qr-panel {
  display: grid;
  gap: 16px;
  padding: 24px;
}

.share-qr-panel h2 { margin: 0; }
.share-qr-panel p { margin: 6px 0 0; color: var(--muted); }

.share-qr-box {
  display: grid;
  place-items: center;
  min-height: 332px;
  padding: 12px;
  border: 1px solid var(--line-soft);
  border-radius: 18px;
  background: linear-gradient(180deg, #f8fafc, #fff);
}

.share-qr-box img {
  width: 320px;
  max-width: 100%;
  aspect-ratio: 1;
  object-fit: contain;
  border-radius: 12px;
  background: #fff;
}

.share-qr-hint {
  margin: 0 !important;
  color: var(--text) !important;
  text-align: center;
  font-size: 18px;
  font-weight: 800;
}

.detail-dialog {
  width: min(1180px, calc(100vw - 28px));
}

.detail-dialog-content {
  padding: 14px 18px 16px;
  height: min(86vh, 900px);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.detail-header {
  border-bottom: 1px solid var(--line-soft);
  padding-bottom: 10px;
  margin-bottom: 8px;
}

.detail-header h2 { margin: 0; }
.detail-header-actions { display: flex; align-items: center; gap: 10px; }

.detail-grid {
  display: grid;
  grid-template-rows: auto minmax(0, 1fr);
  gap: 8px;
  flex: 1;
  min-height: 0;
  overflow: hidden;
}

.subpanel { padding: 14px 18px; }
.detail-dialog .subpanel {
  border: 0;
  border-radius: 0;
  padding: 8px 0;
  background: transparent;
  box-shadow: none;
}
.detail-dialog .link-panel { border-top: 1px solid var(--line-soft); }
.file-panel,
.link-panel {
  min-height: 0;
  display: flex;
  flex-direction: column;
}
.subpanel h3 { margin: 0; }

.section-actions-row {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.link-title-row { align-items: center; }

.inline-form {
  display: flex;
  gap: 8px;
  align-items: center;
}

.file-upload-form { max-width: 540px; }
.file-upload-form button,
.section-actions-row .link-button,
.link-form button {
  flex: 0 0 auto;
  min-width: max-content;
  white-space: nowrap;
}
.link-form input { width: 240px; }

#zipDownload {
  border: 1px solid var(--line);
  background: #fff;
  color: #253044;
  font-weight: 600;
  box-shadow: none;
}

#zipDownload:hover {
  background: #f8fafc;
  border-color: #b8c2d1;
  box-shadow: none;
}

.visually-hidden-file {
  position: absolute;
  width: 1px;
  min-width: 0 !important;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.upload-progress {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 8px;
  color: var(--muted);
  font-size: 13px;
}

.upload-progress-bar {
  flex: 1;
  height: 6px;
  overflow: hidden;
  border-radius: 999px;
  background: #e8eef7;
}

.upload-progress-bar span {
  display: block;
  width: 0;
  height: 100%;
  border-radius: inherit;
  background: var(--primary);
  transition: width 0.16s ease;
}

#uploadProgressText {
  min-width: 94px;
  text-align: right;
  white-space: nowrap;
}

.table-like {
  margin-top: 10px;
  border: 0;
  border-radius: 8px;
  overflow: hidden;
}

#fileList {
  max-height: min(34vh, 360px);
  overflow-x: hidden;
  overflow-y: auto;
}

#linkList {
  flex: 1;
  min-height: 0;
  overflow-x: hidden;
  overflow-y: auto;
}

.table-row {
  display: grid;
  gap: 10px;
  align-items: center;
  padding: 8px 12px;
  border-bottom: 1px solid var(--line-soft);
}

.table-row:last-child { border-bottom: 0; }
.table-row.header { background: #f8fafc; font-weight: 700; color: #475467; }
.file-row { grid-template-columns: minmax(0, 1.4fr) 64px 70px minmax(0, 1fr) minmax(132px, auto); }
.link-row { grid-template-columns: minmax(0, 1fr) 94px 86px minmax(0, 1fr) minmax(132px, auto); }

.table-row > * { min-width: 0; }

.file-name-cell { display: grid; gap: 2px; word-break: break-all; }

.row-actions {
  display: flex;
  gap: 7px;
  align-items: center;
  flex-wrap: wrap;
}

.row-actions a { color: var(--primary); text-decoration: none; }
.empty-block { padding: 28px; text-align: center; color: var(--muted); }

.toast {
  position: fixed;
  left: 50%;
  bottom: 26px;
  transform: translateX(-50%);
  background: #111827;
  color: #fff;
  padding: 12px 16px;
  border-radius: 999px;
  z-index: 100;
}

.mobile-body {
  min-height: 100vh;
  background: #0f172a;
  color: #0f172a;
  overscroll-behavior: none;
}

.mobile-body.signer-overlay-open {
  overflow: hidden;
}

.mobile-page {
  min-height: 100vh;
  padding: 18px;
  background: linear-gradient(180deg, #172554 0%, #eef4ff 34%);
}

.mobile-hero {
  color: #fff;
  padding: 12px 4px 20px;
}

.mobile-hero h1 { margin: 8px 0; font-size: 28px; }
.mobile-hero p { margin: 0; opacity: 0.84; line-height: 1.5; }
.eyebrow { font-weight: 800; letter-spacing: 0.08em; font-size: 12px; opacity: 0.72; }
.mobile-progress { margin-top: 14px; font-weight: 700; }
.verify-edit-button {
  position: relative;
  width: fit-content;
  min-height: 42px;
  margin-top: 14px;
  padding: 9px 16px 9px 38px;
  border: 1px solid rgba(251, 191, 36, 0.42);
  background: #fff7df;
  color: #7c4a03;
  box-shadow: 0 10px 24px rgba(124, 74, 3, 0.16);
}

.verify-edit-button::before {
  content: "";
  position: absolute;
  left: 14px;
  top: 50%;
  width: 18px;
  height: 18px;
  transform: translateY(-50%);
  background-color: currentColor;
  mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath fill='black' d='M7 10V8a5 5 0 0 1 10 0v2h1.2A1.8 1.8 0 0 1 20 11.8v7.4a1.8 1.8 0 0 1-1.8 1.8H5.8A1.8 1.8 0 0 1 4 19.2v-7.4A1.8 1.8 0 0 1 5.8 10H7Zm2.2 0h5.6V8a2.8 2.8 0 0 0-5.6 0v2ZM11 15.7v2.1h2v-2.1a1.7 1.7 0 1 0-2 0Z'/%3E%3C/svg%3E") center / contain no-repeat;
}

.verify-edit-button:hover { background: #ffefbd; }

.verify-dialog {
  width: min(92vw, 420px);
  background: #fff;
}

.verify-dialog-panel {
  display: grid;
  gap: 18px;
  padding: 22px;
}

.verify-dialog-panel h2 {
  margin: 0;
}

.verify-password-field {
  display: grid;
  gap: 8px;
  color: #344054;
  font-weight: 700;
}

.mobile-file-list {
  display: grid;
  gap: 12px;
  margin-bottom: 18px;
}

.mobile-file-card {
  display: grid;
  grid-template-columns: 52px minmax(0, 1fr) auto;
  gap: 14px;
  align-items: center;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.98), rgba(244, 248, 255, 0.94));
  border: 1px solid rgba(255, 255, 255, 0.92);
  border-radius: 22px;
  padding: 16px;
  box-shadow: 0 18px 42px rgba(15, 23, 42, 0.14);
  cursor: pointer;
  transition: transform 0.16s ease, box-shadow 0.16s ease, border-color 0.16s ease;
}

.mobile-file-card:active { transform: scale(0.985); box-shadow: 0 10px 24px rgba(15, 23, 42, 0.12); }

.mobile-file-card:hover { border-color: rgba(22, 93, 255, 0.28); }

.mobile-file-card:focus-visible {
  outline: 3px solid rgba(22, 93, 255, 0.28);
  outline-offset: 3px;
}

.mobile-file-icon {
  width: 52px;
  height: 52px;
  display: grid;
  place-items: center;
  border-radius: 16px;
  background: linear-gradient(160deg, #1d4ed8, #38bdf8);
  color: #fff;
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.06em;
  box-shadow: inset 0 -10px 18px rgba(15, 23, 42, 0.18);
}

.mobile-file-main { min-width: 0; }

.mobile-file-main strong {
  display: block;
  line-height: 1.35;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.mobile-file-main span {
  display: block;
  color: var(--muted);
  margin-top: 6px;
  font-size: 13px;
}

.mobile-file-side {
  display: grid;
  justify-items: end;
  gap: 8px;
}

.mobile-file-status {
  border-radius: 999px;
  padding: 5px 9px;
  background: #eef2f7;
  color: #344054;
  font-size: 12px;
  font-weight: 800;
  white-space: nowrap;
}

.mobile-file-card[data-status="signed"] .mobile-file-status { background: #dcfce7; color: #166534; }
.mobile-file-card[data-status="skipped"] .mobile-file-status { background: #f1f5f9; color: #475569; }

.mobile-file-arrow {
  color: #94a3b8;
  font-size: 28px;
  line-height: 1;
}

.mobile-file-actions {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 10px;
  margin-top: 14px;
}

.bottom-safe { padding-bottom: max(10px, env(safe-area-inset-bottom)); }

.signer-page {
  height: 100vh;
  display: grid;
  grid-template-rows: auto minmax(0, 1fr) auto;
  background: #101827;
}

.signer-overlay {
  position: fixed;
  inset: 0;
  z-index: 50;
}

.signer-topbar,
.signer-toolbar {
  display: grid;
  gap: 8px;
  align-items: center;
  background: rgba(15, 23, 42, 0.96);
  color: #fff;
  padding: 10px;
  z-index: 20;
}

.signer-topbar { grid-template-columns: auto minmax(0, 1fr) auto; }

.signer-topbar > div:not(.zoom-actions) {
  display: grid;
  gap: 2px;
  min-width: 0;
}

.signer-topbar strong {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.signer-topbar span { color: #cbd5e1; font-size: 12px; }

.zoom-actions {
  display: flex;
  gap: 6px;
}

.zoom-actions button { min-width: 42px; }

.signer-toolbar {
  grid-template-columns: 1fr 1fr 1.2fr 1fr 1fr;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.signature-edit-action { display: none; }

.signer-page.signature-editing .signer-toolbar {
  grid-template-columns: repeat(3, 1fr);
}

.signer-page.signature-editing .signature-default-action { display: none; }
.signer-page.signature-editing .signature-edit-action { display: inline-flex; }

.signer-toolbar button,
.signer-topbar button {
  min-height: 44px;
  padding: 8px 10px;
}

.viewer-wrap {
  min-height: 0;
  overflow: auto;
  display: grid;
  place-items: center;
  padding: 12px;
  touch-action: pan-x pan-y;
}

.signer-page.signature-editing .viewer-wrap {
  overflow: hidden;
  touch-action: none;
}

.page-stage {
  position: relative;
  background: #fff;
  box-shadow: 0 20px 80px rgba(0, 0, 0, 0.38);
}

#pdfCanvas { display: block; }

.signature-layer {
  position: absolute;
  inset: 0;
  pointer-events: auto;
  touch-action: none;
}

.signature-item {
  position: absolute;
  touch-action: none;
  overflow: visible;
}

.signature-rotator {
  position: absolute;
  left: 50%;
  top: 50%;
  transform-origin: center;
}

.signature-selection {
  position: relative;
  width: 100%;
  height: 100%;
}

.signature-item img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  pointer-events: none;
  display: block;
}

.signature-item.readonly {
  opacity: 0.85;
  pointer-events: none;
}

.signature-item.editable.selected .signature-selection::before {
  content: "";
  position: absolute;
  inset: -3px;
  border: 3px solid #ef4444;
  border-radius: 4px;
  background: rgba(239, 68, 68, 0.08);
  box-shadow: 0 0 0 2px rgba(255, 255, 255, 0.9), 0 0 16px rgba(239, 68, 68, 0.48);
  pointer-events: none;
}

.signature-dialog {
  width: min(96vw, 760px);
  background: #fff;
}

.signature-library-dialog {
  width: min(96vw, 720px);
  background: #fff;
}

.signature-library-panel {
  padding: 16px;
  max-height: min(86vh, 760px);
  overflow: auto;
}

.signature-library-panel h2 { margin: 0 0 6px; }
.signature-library-panel p { color: var(--muted); margin: 0; line-height: 1.45; }

.signature-library-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin: 14px 0;
}

.file-import-button {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  padding: 10px 16px;
  cursor: pointer;
}

.signature-library-list {
  display: grid;
  gap: 10px;
}

.signature-library-card {
  display: grid;
  grid-template-columns: 110px minmax(0, 1fr) auto;
  gap: 12px;
  align-items: center;
  padding: 10px;
  border: 1px solid var(--line-soft);
  border-radius: 16px;
  background: #fbfdff;
}

.signature-library-preview {
  height: 72px;
  display: grid;
  place-items: center;
  border: 1px dashed #b8c4d8;
  border-radius: 12px;
  background: #fff;
}

.signature-library-preview img {
  max-width: 96%;
  max-height: 64px;
  object-fit: contain;
}

.signature-library-meta {
  display: grid;
  gap: 4px;
  min-width: 0;
}

.signature-library-meta span {
  color: var(--muted);
  font-size: 12px;
}

.signature-library-card-actions {
  display: grid;
  gap: 8px;
}

.signature-dialog form { padding: 16px; }
.signature-dialog h2 { margin: 0 0 6px; }
.signature-dialog p { color: var(--muted); margin: 0 0 12px; }

#drawCanvas {
  width: 100%;
  height: min(42vh, 320px);
  border: 2px dashed #b8c4d8;
  border-radius: 18px;
  background: #fff;
  touch-action: none;
}

.mobile-toast { bottom: 88px; }

@media (max-width: 920px) {
  .admin-main { padding: 16px; }
  .page-title-row,
  .section-title-row {
    align-items: stretch;
    flex-direction: column;
  }
  .file-row,
  .link-row { grid-template-columns: 1fr; }
  .inline-form { flex-direction: column; align-items: stretch; }
  .link-form input { min-width: 0; width: 100%; }

  .task-table { min-width: 760px; }
  .task-table th:nth-child(5),
  .task-table td:nth-child(5),
  .task-table th:nth-child(7),
  .task-table td:nth-child(7) { display: none; }

  .detail-header { flex-direction: column; }
  .detail-header-actions { width: 100%; justify-content: flex-end; flex-wrap: wrap; }
}

@media (max-width: 520px) {
  .admin-topbar { height: 54px; padding: 0 12px; }
  .admin-brand span { display: none; }
  .admin-topbar-actions button { min-height: 32px; padding: 6px 9px; }
  .page-title-row { gap: 12px; }
  .page-title-row h1 { font-size: 22px; }
  .page-title-row p { display: none; }
  .task-table { min-width: 620px; }
  .task-table th:nth-child(6),
  .task-table td:nth-child(6) { display: none; }

  .signer-toolbar {
    grid-template-columns: repeat(5, 1fr);
    gap: 6px;
  }

  .signer-toolbar button {
    font-size: 12px;
    padding: 8px 4px;
  }

  .signature-library-card {
    grid-template-columns: 92px minmax(0, 1fr);
  }

  .signature-library-card-actions {
    grid-column: 1 / -1;
    grid-template-columns: 1fr 1fr;
  }
}