:root {
  --bg: #f3f5f8;
  --surface: #ffffff;
  --surface-soft: #f8fafc;
  --line: #d8dee8;
  --line-strong: #c6ceda;
  --text: #151b26;
  --muted: #667085;
  --muted-2: #8a94a6;
  --accent: #2563eb;
  --accent-ink: #ffffff;
  --accent-soft: #e8f0ff;
  --success: #067647;
  --success-soft: #ecfdf3;
  --warning: #b54708;
  --warning-soft: #fffaeb;
  --danger: #b42318;
  --danger-soft: #fef3f2;
  --shadow: 0 1px 2px rgba(16, 24, 40, 0.06), 0 8px 24px rgba(16, 24, 40, 0.06);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 14px/1.45 system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

a { color: var(--accent); text-decoration: none; }
code {
  padding: 2px 6px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--surface-soft);
  color: #344054;
}

button, input, select, textarea { font: inherit; }
button {
  min-height: 36px;
  border: 1px solid var(--line-strong);
  background: var(--surface);
  color: var(--text);
  border-radius: 6px;
  padding: 7px 12px;
  cursor: pointer;
}
button:hover { border-color: #98a2b3; background: var(--surface-soft); }
button.primary, .primary {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--accent-ink);
}
button.primary:hover, .primary:hover { background: #1d4ed8; }
button.danger {
  background: var(--danger);
  border-color: var(--danger);
  color: #fff;
}
button.danger:hover {
  background: #912018;
  border-color: #912018;
}

input, select, textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 8px 10px;
  background: #fff;
  color: var(--text);
}
textarea {
  min-height: 340px;
  resize: vertical;
  font: 12px/1.5 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}
pre {
  margin: 0;
  overflow: auto;
  max-height: 560px;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #0f172a;
  color: #dbeafe;
  font: 12px/1.55 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

.app-shell {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 248px minmax(0, 1fr);
}
.sidebar {
  position: sticky;
  top: 0;
  height: 100vh;
  display: flex;
  flex-direction: column;
  gap: 18px;
  padding: 20px 16px;
  background: #111827;
  color: #e5e7eb;
}
.brand {
  display: grid;
  gap: 2px;
  padding: 4px 8px 14px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
  color: #fff;
}
.brand strong { font-size: 18px; letter-spacing: 0; }
.brand span { color: #9ca3af; font-size: 12px; }
.side-nav {
  display: grid;
  gap: 4px;
}
.side-nav a {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 38px;
  padding: 8px 10px;
  border-radius: 6px;
  color: #d1d5db;
}
.side-nav a:hover { background: rgba(255,255,255,0.08); color: #fff; }
.nav-mark {
  width: 24px;
  height: 24px;
  display: inline-grid;
  place-items: center;
  border-radius: 6px;
  background: rgba(255,255,255,0.1);
  color: #fff;
  font-size: 11px;
  font-weight: 700;
}
.sidebar-footer {
  margin-top: auto;
  display: grid;
  gap: 10px;
  padding: 12px 8px 0;
  border-top: 1px solid rgba(255,255,255,0.1);
}
.user-chip { color: #9ca3af; font-size: 12px; overflow-wrap: anywhere; }
.sidebar button {
  width: 100%;
  border-color: rgba(255,255,255,0.16);
  background: rgba(255,255,255,0.06);
  color: #fff;
}

.content {
  min-width: 0;
  padding: 28px;
}
.flash {
  position: sticky;
  top: 16px;
  z-index: 20;
  max-width: 720px;
  margin: 0 auto 16px;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  box-shadow: var(--shadow);
  font-weight: 700;
}
.flash-success {
  border-color: #a6f4c5;
  background: var(--success-soft);
  color: var(--success);
}
.flash-error {
  border-color: #fecdca;
  background: var(--danger-soft);
  color: var(--danger);
}
.flash.is-hiding {
  opacity: 0;
  transform: translateY(-4px);
  transition: opacity 180ms ease, transform 180ms ease;
}
.page {
  max-width: 1440px;
  margin: 0 auto;
  display: grid;
  gap: 18px;
}
.page-title {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
}
.page-title h1 {
  margin: 0;
  font-size: 28px;
  line-height: 1.15;
}
.page-title p {
  margin: 6px 0 0;
  color: var(--muted);
}
.muted { color: var(--muted); }

.panel, .hero {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
}
.panel { padding: 18px; }
.hero { padding: 22px; }
.panel-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 16px;
}
.panel h1, .panel h2, .hero h1 { margin: 0; }
.panel h2 { font-size: 18px; }

.stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}
.stats article {
  display: grid;
  gap: 4px;
  padding: 16px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
}
.stats strong { font-size: 30px; line-height: 1; }
.stats span { color: var(--muted); font-size: 13px; }

.toolbar, .inline-form {
  display: grid;
  grid-template-columns: repeat(4, minmax(160px, 1fr)) auto;
  gap: 10px;
  align-items: end;
  margin-bottom: 16px;
}
.filter-bar {
  display: grid;
  grid-template-columns: repeat(5, minmax(150px, 1fr)) auto auto;
  gap: 10px;
  align-items: end;
  margin: 14px 0 16px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface-soft);
}
.filter-bar .action-link {
  background: #fff;
}
.stacked-form { display: grid; gap: 12px; }
.form-row {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr)) auto;
  gap: 10px;
  align-items: end;
}
.settings-form {
  display: grid;
  gap: 18px;
}
.settings-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(220px, 1fr));
  gap: 12px;
}
.settings-grid label:not(.checkbox-row) {
  display: grid;
  gap: 6px;
  color: #344054;
  font-weight: 600;
}
.settings-list {
  display: grid;
  gap: 10px;
}
.guide-steps {
  display: grid;
  gap: 12px;
}
.guide-steps article {
  display: grid;
  grid-template-columns: 36px 1fr;
  gap: 12px;
  align-items: start;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface-soft);
}
.guide-steps h3 {
  margin: 0 0 6px;
  font-size: 15px;
}
.guide-steps p {
  margin: 0;
  color: var(--muted);
}
.guide-step {
  display: inline-grid;
  place-items: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  color: #fff;
  background: var(--accent);
  font-weight: 800;
}
.guide-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(260px, 1fr));
  gap: 18px;
}
.guide-list {
  display: grid;
  gap: 10px;
  margin: 0;
  padding-left: 18px;
  color: var(--muted);
}
.setting-status {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 11px 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface-soft);
}
.account-layout {
  display: grid;
  gap: 14px;
}
.account-rows,
.account-form,
.password-form {
  display: grid;
  gap: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}
.account-row,
.account-field {
  display: grid;
  grid-template-columns: minmax(180px, 0.42fr) minmax(0, 1fr);
  gap: 16px;
  align-items: center;
  min-height: 58px;
  padding: 12px 14px;
  border-bottom: 1px solid var(--line);
}
.account-row {
  background: var(--surface-soft);
}
.account-row:last-child,
.account-field:last-of-type {
  border-bottom: 0;
}
.account-row p {
  margin: 4px 0 0;
}
.account-row > .badge {
  justify-self: start;
  align-self: center;
}
.account-label,
.account-field > span:first-child {
  color: #475467;
  font-size: 13px;
  font-weight: 700;
}
.subscription-field {
  display: grid;
  gap: 6px;
}
.subscription-line {
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
}
.subscription-line form {
  display: inline-flex;
}
.subscription-line code {
  min-width: 0;
  overflow-wrap: anywhere;
}
.copy-button {
  min-height: 30px;
  padding: 5px 9px;
  white-space: nowrap;
}
.copy-button.is-copied {
  border-color: #a6f4c5;
  background: var(--success-soft);
  color: var(--success);
}
.account-check {
  min-height: 38px;
  align-items: center;
}
.password-card {
  padding-top: 4px;
}
.password-card .password-form {
  border: 0;
  border-radius: 0;
  overflow: visible;
}
.account-form-actions {
  display: flex;
  justify-content: flex-end;
  padding: 12px 14px;
  border-top: 1px solid var(--line);
  background: var(--surface-soft);
}
.checkbox-row {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--muted);
  white-space: nowrap;
}
.checkbox-row input { width: auto; }

.table-wrap {
  overflow: auto;
  border: 1px solid var(--line);
  border-radius: 8px;
}
table {
  width: 100%;
  border-collapse: collapse;
  background: #fff;
}
th, td {
  border-bottom: 1px solid var(--line);
  padding: 11px 12px;
  text-align: left;
  vertical-align: top;
}
tr:last-child td { border-bottom: 0; }
th {
  background: var(--surface-soft);
  color: #475467;
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0;
}
td.actions {
  width: 1%;
  white-space: nowrap;
  text-align: right;
}
td.actions form {
  display: inline-flex;
  margin-left: 8px;
}
.action-link + form { margin-left: 8px; }
.action-link {
  min-height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line-strong);
  border-radius: 6px;
  padding: 7px 12px;
  background: var(--surface);
  color: var(--text);
  font-weight: 600;
}
.action-link:hover {
  border-color: var(--accent);
  background: var(--accent-soft);
  color: #1d4ed8;
}
.action-link.is-disabled {
  pointer-events: none;
  opacity: 0.45;
}
.pagination {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  gap: 10px;
  margin-top: 14px;
  color: var(--muted);
}
.cell-compact { white-space: nowrap; }
.cell-wide { min-width: 360px; }

.badge {
  display: inline-flex;
  align-items: center;
  min-height: 24px;
  padding: 3px 8px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
}
.badge-ok { background: var(--success-soft); color: var(--success); }
.badge-warn { background: var(--warning-soft); color: var(--warning); }
.badge-off { background: #f2f4f7; color: #475467; }
.badge-info { background: var(--accent-soft); color: #1d4ed8; }
.badge-danger { background: var(--danger-soft); color: var(--danger); }

.assignment-list {
  display: grid;
  overflow: auto;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}
.assignment-row {
  display: grid;
  grid-template-columns: 44px 84px minmax(220px, 1.3fr) 120px 110px minmax(220px, 1fr) 100px;
  gap: 12px;
  align-items: center;
  min-width: 1020px;
  padding: 11px 12px;
  border-bottom: 1px solid var(--line);
}
.assignment-row:last-child { border-bottom: 0; }
.assignment-row input { width: auto; }
.assignment-row .sort-input {
  width: 72px;
}
.assignment-row strong {
  overflow-wrap: anywhere;
}
.assignment-head {
  background: var(--surface-soft);
  color: #475467;
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
}
.assignment-row:not(.assignment-head):hover {
  background: #fbfdff;
}
.selection-actions {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  flex-wrap: wrap;
}
.selection-actions button {
  min-height: 32px;
  padding: 5px 10px;
}
.panel-actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  margin-top: 14px;
}
.split-actions {
  justify-content: space-between;
}
.template-workspace {
  display: grid;
  grid-template-columns: minmax(480px, 1fr) minmax(420px, 1fr);
  gap: 18px;
  align-items: start;
}
.template-list {
  display: grid;
  gap: 16px;
}
.template-card {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 14px;
  background: var(--surface-soft);
}
.template-card-head {
  display: grid;
  grid-template-columns: minmax(220px, 1fr) auto auto;
  gap: 10px;
  align-items: center;
}
.template-card textarea {
  min-height: 280px;
}

.alert {
  border: 1px solid #fda29b;
  color: var(--danger);
  background: var(--danger-soft);
  border-radius: 8px;
  padding: 10px 12px;
  margin-bottom: 12px;
}
.error-cell {
  max-width: 420px;
  color: var(--danger);
  word-break: break-word;
}
.mono-cell {
  font: 12px/1.45 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  color: #344054;
  overflow-wrap: anywhere;
}
.speed-cell {
  min-width: 132px;
}
.speed-error,
.speed-time {
  display: block;
  max-width: 220px;
  margin-top: 5px;
  color: var(--muted);
  font-size: 12px;
  overflow-wrap: anywhere;
}
.speed-error {
  color: var(--danger);
}
details {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface-soft);
}
summary {
  cursor: pointer;
  padding: 9px 11px;
  color: #344054;
  font-weight: 600;
}
details .details-body {
  display: grid;
  gap: 10px;
  padding: 0 11px 11px;
}
td textarea { min-width: 420px; min-height: 220px; }

.auth-page {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
  background:
    linear-gradient(135deg, rgba(37, 99, 235, 0.08), transparent 42%),
    var(--bg);
}
.auth-card {
  width: min(420px, 100%);
  display: grid;
  gap: 12px;
  padding: 26px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
}
.auth-card h1, .auth-card p { margin: 0; }
.auth-card p { color: var(--muted); margin-bottom: 8px; }
.auth-card label { color: #344054; font-weight: 600; }

.confirm-backdrop {
  position: fixed;
  inset: 0;
  z-index: 50;
  display: none;
  place-items: center;
  padding: 20px;
  background: rgba(15, 23, 42, 0.42);
}
.confirm-backdrop.is-open {
  display: grid;
}
.confirm-dialog {
  width: min(440px, 100%);
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 14px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 18px 60px rgba(16, 24, 40, 0.22);
}
.confirm-icon {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border-radius: 8px;
  background: var(--danger-soft);
  color: var(--danger);
  font-weight: 800;
}
.confirm-copy {
  min-width: 0;
}
.confirm-copy h2 {
  margin: 0;
  font-size: 18px;
  line-height: 1.2;
}
.confirm-copy p {
  margin: 8px 0 0;
  color: var(--muted);
}
.confirm-actions {
  grid-column: 1 / -1;
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  padding-top: 4px;
}

@media (max-width: 1100px) {
  .app-shell { grid-template-columns: 1fr; }
  .sidebar {
    position: static;
    height: auto;
  }
  .side-nav {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }
  .sidebar-footer { margin-top: 0; }
  .stats, .grid, .toolbar, .inline-form, .form-row, .settings-grid, .password-card, .template-workspace, .template-card-head, .guide-grid {
    grid-template-columns: 1fr;
  }
  .account-row,
  .account-field {
    grid-template-columns: 1fr;
    align-items: start;
  }
  .subscription-line {
    align-items: stretch;
    flex-direction: column;
  }
  .copy-button {
    width: fit-content;
  }
}

@media (max-width: 700px) {
  .content { padding: 16px; }
  .side-nav { grid-template-columns: 1fr 1fr; }
  .page-title { align-items: flex-start; flex-direction: column; }
}