:root {
  --sidebar-bg: #1f2a37;
  --sidebar-text: #e5e7eb;
  --sidebar-active: #2563eb;
  --main-bg: #f3f4f6;
  --card-bg: #ffffff;
  --border: #e5e7eb;
  --muted: #6b7280;
  --danger: #b91c1c;
}

* {
  box-sizing: border-box;
}

body.app-body {
  margin: 0;
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--main-bg);
  color: #111827;
}

.layout {
  display: flex;
  min-height: 100vh;
}

.sidebar {
  width: 240px;
  background: var(--sidebar-bg);
  color: var(--sidebar-text);
  flex-shrink: 0;
}

.sidebar-header {
  padding: 1rem 1rem 0.5rem;
  font-weight: 700;
  font-size: 1.05rem;
}

.sidebar nav {
  padding: 0.5rem 0 1.5rem;
}

.nav-section {
  margin-top: 0.75rem;
  padding: 0.35rem 1rem;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: #9ca3af;
}

.nav-fold {
  margin: 0;
}

.nav-fold-summary {
  list-style: none;
  cursor: pointer;
  user-select: none;
}

.nav-fold-summary::-webkit-details-marker {
  display: none;
}

.nav-fold-summary::after {
  content: " ▸";
  font-size: 0.7rem;
  color: #9ca3af;
}

.nav-fold[open] > .nav-fold-summary::after {
  content: " ▾";
}

.nav-link {
  display: block;
  padding: 0.45rem 1rem;
  color: var(--sidebar-text);
  text-decoration: none;
  font-size: 0.95rem;
}

.nav-link:hover,
.nav-link.active {
  background: rgba(37, 99, 235, 0.25);
}

.nav-link.external::after {
  content: " ↗";
  font-size: 0.75rem;
  color: #9ca3af;
}

.nav-sub {
  padding-left: 0.5rem;
}

.main {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 0.85rem 1.25rem;
  background: #fff;
  border-bottom: 1px solid var(--border);
}

.topbar-meta {
  color: var(--muted);
  font-size: 0.9rem;
}

.content {
  padding: 1.25rem;
}

.flash-list {
  list-style: none;
  padding: 0;
  margin: 0 0 1rem;
}

.toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: flex-end;
  margin-bottom: 1rem;
}

.toolbar .field {
  margin: 0;
  min-width: 10rem;
}

.toolbar .actions {
  display: flex;
  gap: 0.5rem;
  align-items: center;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
}

.data-table th,
.data-table td {
  text-align: left;
  padding: 0.65rem 0.5rem;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}

.data-table th {
  color: var(--muted);
  font-weight: 600;
  font-size: 0.82rem;
}

.inline-form {
  display: inline;
}

.muted {
  color: var(--muted);
  font-size: 0.9rem;
}

.stack-form {
  max-width: 36rem;
}

.form-actions {
  display: flex;
  gap: 0.75rem;
  align-items: center;
  margin-top: 1rem;
}

.detail-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(14rem, 1fr));
  gap: 1rem;
  margin: 1rem 0 1.5rem;
}

.detail-grid dt {
  color: var(--muted);
  font-size: 0.82rem;
  margin-bottom: 0.2rem;
}

.detail-grid dd {
  margin: 0;
  font-weight: 600;
}

.detail-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
}

.flash {
  padding: 0.65rem 0.85rem;
  border-radius: 0.35rem;
  margin-bottom: 0.5rem;
  background: #eff6ff;
  border: 1px solid #bfdbfe;
}

.flash-danger {
  background: #fef2f2;
  border-color: #fecaca;
  color: var(--danger);
}

.flash-success {
  background: #ecfdf5;
  border-color: #a7f3d0;
}

.flash-warning {
  background: #fffbeb;
  border-color: #fde68a;
}

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

.board-grid-s5 {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.board-span-2 {
  grid-column: span 2;
}

.board-panel {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 0.5rem;
  padding: 1rem;
  min-height: 10rem;
}

.board-panel h2 {
  margin: 0 0 0.75rem;
  font-size: 1.05rem;
}

.settings-panel .muted {
  color: var(--muted);
  margin: 0 0 1rem;
}

.settings-fieldset {
  border: 1px solid var(--border);
  border-radius: 0.35rem;
  padding: 0.75rem 1rem 1rem;
  margin: 0 0 1rem;
}

.settings-fieldset legend {
  padding: 0 0.35rem;
  color: var(--muted);
  font-size: 0.85rem;
}

.check-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin: 0.45rem 0;
  font-size: 0.95rem;
}

.board-filters label {
  display: block;
  font-size: 0.8rem;
  color: var(--muted);
  margin-bottom: 0.2rem;
}

.board-filters input,
.board-filters select {
  padding: 0.4rem 0.5rem;
  border: 1px solid var(--border);
  border-radius: 0.35rem;
  min-width: 10rem;
}

.tab-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin-bottom: 0.75rem;
}

.tab {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.3rem 0.55rem;
  border: 1px solid var(--border);
  border-radius: 0.35rem;
  color: inherit;
  text-decoration: none;
  font-size: 0.85rem;
  background: #fff;
}

.tab:focus-visible {
  outline: 2px solid #2563eb;
  outline-offset: 2px;
}

.tab.active {
  border-color: #2563eb;
  background: #eff6ff;
  font-weight: 600;
}

.tab-badge {
  display: inline-block;
  min-width: 1.25rem;
  padding: 0.05rem 0.35rem;
  border-radius: 0.35rem;
  background: #e5e7eb;
  font-size: 0.75rem;
  text-align: center;
}

.badge-soft {
  display: inline-block;
  margin-right: 0.5rem;
  margin-bottom: 0.5rem;
  padding: 0.25rem 0.5rem;
  border: 1px solid #fde68a;
  background: #fffbeb;
  border-radius: 0.35rem;
  font-size: 0.85rem;
}

.tat-chip,
.avail-chip {
  display: inline-block;
  padding: 0.15rem 0.45rem;
  border-radius: 0.3rem;
  font-size: 0.78rem;
  font-weight: 600;
  border: 1px solid transparent;
}

.tat-overdue {
  background: #fef2f2;
  color: #991b1b;
  border-color: #fecaca;
}

.tat-soon {
  background: #fff7ed;
  color: #9a3412;
  border-color: #fed7aa;
}

.tat-week {
  background: #fefce8;
  color: #854d0e;
  border-color: #fde68a;
}

.tat-outside,
.tat-none {
  background: #f3f4f6;
  color: #4b5563;
  border-color: #e5e7eb;
}

.avail-chip.idle {
  background: #ecfdf5;
  color: #065f46;
  border-color: #a7f3d0;
}

.avail-chip.busy {
  background: #fef2f2;
  color: #991b1b;
  border-color: #fecaca;
}

.ot-form {
  margin-bottom: 0.75rem;
}

@media (max-width: 960px) {
  .board-grid-s5 {
    grid-template-columns: 1fr;
  }
  .board-span-2 {
    grid-column: span 1;
  }
}

.empty-state {
  color: var(--muted);
  font-size: 0.95rem;
  margin: 0;
}

.login-wrap {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 1rem;
}

.login-card {
  width: min(420px, 100%);
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 0.6rem;
  padding: 1.5rem;
}

.login-card h1 {
  margin: 0 0 0.25rem;
  font-size: 1.35rem;
}

.login-card .subtitle {
  margin: 0 0 1.25rem;
  color: var(--muted);
}

.form-row {
  margin-bottom: 0.9rem;
}

.form-row label {
  display: block;
  margin-bottom: 0.3rem;
  font-size: 0.9rem;
}

.form-row input[type="email"],
.form-row input[type="password"],
.form-row input[type="text"],
.form-row input[type="date"],
.form-row input[type="time"],
.form-row select,
.form-row textarea {
  width: 100%;
  padding: 0.55rem 0.65rem;
  border: 1px solid var(--border);
  border-radius: 0.35rem;
}

.btn {
  display: inline-block;
  border: none;
  border-radius: 0.35rem;
  padding: 0.55rem 0.9rem;
  background: #2563eb;
  color: #fff;
  cursor: pointer;
  text-decoration: none;
  font-size: 0.95rem;
}

.btn-secondary {
  background: #4b5563;
}

.btn-link {
  background: transparent;
  color: #2563eb;
  padding: 0;
}

.error-page {
  max-width: 40rem;
  margin: 3rem auto;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 0.5rem;
  padding: 1.5rem;
}

@media (max-width: 900px) {
  .layout {
    flex-direction: column;
  }

  .sidebar {
    width: 100%;
  }

  .board-grid {
    grid-template-columns: 1fr;
  }
}