:root {
  --bg: #f6f7f9;
  --panel: #ffffff;
  --text: #172033;
  --muted: #667085;
  --line: #e3e7ee;
  --brand: #185abc;
  --brand-dark: #123f82;
  --danger: #b42318;
  --radius: 8px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: Inter, "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
}

button,
a,
input,
select,
textarea {
  font: inherit;
}

button,
a {
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fff;
  color: var(--text);
  padding: 9px 14px;
  text-decoration: none;
}

button,
a {
  cursor: pointer;
}

button.primary,
a.primary {
  border-color: var(--brand);
  background: var(--brand);
  color: #fff;
  display: inline-block;
  text-align: center;
}

button.primary:hover,
a.primary:hover {
  background: var(--brand-dark);
}

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

button.ghost {
  background: transparent;
}

.app-shell {
  display: grid;
  grid-template-columns: 260px 1fr;
  min-height: 100vh;
}

.sidebar {
  background: #101828;
  color: #fff;
  padding: 24px 16px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.brand {
  display: flex;
  gap: 12px;
  align-items: center;
}

.brand-mark {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  border-radius: var(--radius);
  background: var(--brand);
  font-weight: 700;
}

.brand small,
.login-box p {
  display: block;
  color: #bac4d3;
  margin-top: 4px;
}

nav {
  display: grid;
  gap: 8px;
}

.nav-item {
  border: 0;
  color: #d0d5dd;
  background: transparent;
  text-align: left;
}

.nav-item.active,
.nav-item:hover {
  background: #1d2939;
  color: #fff;
}

.login-box {
  margin-top: auto;
  display: grid;
  gap: 8px;
}

.login-box select,
.login-box a,
.login-box button {
  width: 100%;
}

.auth-user {
  display: grid;
  gap: 6px;
}

.auth-user strong {
  color: #fff;
}

.auth-card {
  max-width: 420px;
  margin: 80px auto 0;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
}

.auth-card p {
  color: var(--muted);
  margin-top: 10px;
  margin-bottom: 18px;
}

main {
  min-width: 0;
  padding: 28px;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  margin-bottom: 24px;
}

h1,
h2,
p {
  margin: 0;
}

h1 {
  font-size: 28px;
}

h2 {
  font-size: 18px;
}

.topbar p {
  color: var(--muted);
  margin-top: 6px;
}

.view {
  display: none;
}

.view.active {
  display: block;
}

.metrics {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  margin-bottom: 20px;
}

.metrics article,
.panel,
.document-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
}

.metrics article {
  padding: 18px;
}

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

.metrics strong {
  display: block;
  margin-top: 8px;
  font-size: 26px;
}

.panel {
  padding: 18px;
}

.panel-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}

.filters {
  display: grid;
  grid-template-columns: 1fr 180px 180px auto;
  gap: 12px;
  margin-bottom: 16px;
}

input,
select,
textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fff;
  color: var(--text);
  padding: 10px 12px;
}

textarea {
  resize: vertical;
}

.document-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 14px;
}

.batch-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
}

.batch-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.document-card {
  padding: 16px;
  display: grid;
  gap: 10px;
}

.card-check {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
}

.card-check input {
  width: 16px;
  height: 16px;
}

.document-card h3 {
  margin: 0;
  font-size: 17px;
  overflow-wrap: anywhere;
}

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.chip {
  border-radius: 999px;
  background: #eef4ff;
  color: #1849a9;
  padding: 4px 9px;
  font-size: 12px;
}

.card-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

label {
  display: grid;
  gap: 7px;
  color: #344054;
}

.wide {
  grid-column: 1 / -1;
}

.form-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.permissions-layout {
  display: grid;
  grid-template-columns: 320px minmax(0, 1fr);
  gap: 16px;
}

.user-list-item {
  width: 100%;
  text-align: left;
  border: 0;
  border-bottom: 1px solid var(--line);
  border-radius: 0;
  background: transparent;
  padding: 12px 0;
}

.user-list-item.selected {
  background: #f5f8ff;
}

.subsection {
  margin-top: 18px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

.inline-fields {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.temp-access-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}

.list {
  display: grid;
  gap: 10px;
}

.list-item {
  border-bottom: 1px solid var(--line);
  padding: 10px 0;
}

.list-item:last-child {
  border-bottom: 0;
}

dialog {
  width: min(1180px, calc(100vw - 32px));
  height: min(760px, calc(100vh - 32px));
  border: 0;
  border-radius: var(--radius);
  padding: 0;
  box-shadow: 0 24px 70px rgba(16, 24, 40, 0.24);
}

dialog::backdrop {
  background: rgba(16, 24, 40, 0.5);
}

.dialog-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--line);
  padding: 16px 18px;
}

.detail-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) 360px;
  height: calc(100% - 67px);
}

.preview-box {
  position: relative;
  min-height: 0;
  background: #eef1f5;
}

.preview-box iframe {
  width: 100%;
  height: 100%;
  border: 0;
  background: #fff;
}

.watermark {
  position: absolute;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  opacity: 0.12;
  background-image: repeating-linear-gradient(
    -30deg,
    transparent 0 90px,
    rgba(23, 32, 51, 0.55) 90px 92px,
    transparent 92px 180px
  );
}

.watermark::after {
  content: attr(data-text);
  position: absolute;
  inset: 20px;
  display: grid;
  place-items: center;
  color: #101828;
  font-size: 22px;
  font-weight: 700;
  transform: rotate(-24deg);
  white-space: pre-line;
  text-align: center;
}

.preview-fallback {
  display: none;
  padding: 28px;
}

.preview-fallback.active {
  display: block;
}

.detail-form {
  border-left: 1px solid var(--line);
  padding: 18px;
  overflow: auto;
  display: grid;
  gap: 12px;
  align-content: start;
}

.danger {
  color: var(--danger);
}

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

  .sidebar {
    position: static;
  }

  .metrics,
  .filters,
  .form-grid,
  .detail-layout,
  .permissions-layout,
  .inline-fields {
    grid-template-columns: 1fr;
  }

  dialog {
    height: calc(100vh - 16px);
  }
}