:root {
  color-scheme: light;
  --bg: #f5f7fb;
  --border: #d9dde7;
  --ink: #172033;
  --muted: #697386;
  --panel: #fff;
  --primary: #2563eb;
  --danger: #dc2626;
  --warning: #b45309;
}

* {
  box-sizing: border-box;
}

body {
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft Yahei", sans-serif;
  margin: 0;
}

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

button {
  background: var(--primary);
  border: 1px solid var(--primary);
  border-radius: 6px;
  color: #fff;
  cursor: pointer;
  padding: 8px 12px;
}

button.secondary,
.top-actions button,
.table-actions button,
#clear-user-form {
  background: #fff;
  border-color: var(--border);
  color: var(--ink);
}

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

.top-actions button.danger {
  background: #fff;
  border-color: #fecaca;
  color: var(--danger);
}

input,
select,
textarea {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--ink);
  padding: 8px 10px;
  width: 100%;
}

textarea {
  min-height: 180px;
  resize: vertical;
}

.hidden {
  display: none !important;
}

.login-screen {
  align-items: center;
  display: flex;
  min-height: 100vh;
  justify-content: center;
  padding: 24px;
}

.login-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  box-shadow: 0 16px 40px rgba(23, 32, 51, 0.08);
  display: grid;
  gap: 14px;
  max-width: 380px;
  padding: 24px;
  width: 100%;
}

.login-card h1 {
  font-size: 22px;
  margin: 0;
}

.login-card button {
  width: 100%;
}

.login-error {
  color: var(--danger);
  min-height: 20px;
  margin: 0;
}

#bulk-result {
  margin-top: 12px;
  min-height: 130px;
}

.topbar {
  align-items: center;
  background: var(--panel);
  border-bottom: 1px solid var(--border);
  display: flex;
  gap: 16px;
  justify-content: space-between;
  padding: 18px 24px;
}

.topbar h1 {
  font-size: 22px;
  margin: 0 0 4px;
}

.reset-panel {
  align-items: center;
  background: #fff7ed;
  border-bottom: 1px solid #fed7aa;
  display: flex;
  gap: 16px;
  justify-content: space-between;
  padding: 14px 24px;
}

.reset-panel strong {
  color: #9a3412;
}

.reset-actions {
  align-items: center;
  display: grid;
  gap: 8px;
  grid-template-columns: minmax(160px, 220px) auto auto;
}

.topbar p,
.hint {
  color: var(--muted);
  margin: 0;
}

.top-actions,
.table-actions,
.form-actions,
.row {
  display: flex;
  gap: 8px;
}

main {
  margin: 0 auto;
  max-width: 1180px;
  padding: 20px;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  margin-bottom: 18px;
  padding: 18px;
}

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

.panel-title h2 {
  font-size: 18px;
  margin: 0;
}

.row {
  align-items: end;
  margin-top: 10px;
}

.row label {
  width: 220px;
}

.user-form {
  border-bottom: 1px solid var(--border);
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-bottom: 16px;
  padding-bottom: 16px;
}

.bulk-form {
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin-bottom: 12px;
}

label {
  color: var(--muted);
  display: grid;
  gap: 5px;
  font-size: 13px;
}

.checkbox {
  align-items: center;
  display: flex;
  gap: 8px;
  padding-top: 24px;
}

.checkbox input {
  width: auto;
}

.node-picker,
.form-actions {
  grid-column: 1 / -1;
}

#user-node-list {
  display: grid;
  gap: 8px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-top: 8px;
}

.node-check {
  align-items: center;
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--ink);
  display: flex;
  gap: 8px;
  padding: 8px;
}

.node-check input {
  width: auto;
}

table {
  border-collapse: collapse;
  width: 100%;
}

th,
td {
  border-bottom: 1px solid var(--border);
  padding: 9px 8px;
  text-align: left;
  vertical-align: top;
}

th {
  color: var(--muted);
  font-size: 12px;
  font-weight: 600;
}

code {
  background: #eef2ff;
  border-radius: 4px;
  color: #3730a3;
  padding: 2px 4px;
}

.sub-url {
  min-width: 280px;
}

.sub-url div {
  display: grid;
  gap: 4px;
  margin-bottom: 8px;
}

.sub-url code {
  display: block;
  max-width: 360px;
  overflow-wrap: anywhere;
}

.status {
  border-radius: 999px;
  display: inline-block;
  font-size: 12px;
  padding: 2px 8px;
}

.status.on {
  background: #dcfce7;
  color: #166534;
}

.status.off {
  background: #fee2e2;
  color: #991b1b;
}

.sub-url {
  max-width: 360px;
  overflow-wrap: anywhere;
}

#toast {
  background: #111827;
  border-radius: 6px;
  bottom: 20px;
  color: #fff;
  left: 50%;
  opacity: 0;
  padding: 10px 14px;
  pointer-events: none;
  position: fixed;
  transform: translateX(-50%);
  transition: opacity .18s ease;
}

#toast.show {
  opacity: 1;
}

@media (max-width: 860px) {
  .topbar,
  .reset-panel,
  .row {
    align-items: stretch;
    flex-direction: column;
  }

  .reset-actions {
    grid-template-columns: 1fr;
  }

  .user-form,
  .bulk-form,
  #user-node-list {
    grid-template-columns: 1fr;
  }

  .row label {
    width: auto;
  }
}