:root {
  --bg: #f4f1ea;
  --ink: #1c1916;
  --muted: #5c564e;
  --line: #d9d2c5;
  --card: #fffcf7;
  --accent: #1f4d3a;
  --danger: #8a2b2b;
  --ok: #1f4d3a;
  --warn: #6b4f1d;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font: 15px/1.5 "Segoe UI", "PingFang SC", "Noto Sans SC", sans-serif;
  background: var(--bg);
  color: var(--ink);
}
a { color: var(--accent); }
.wrap { max-width: 920px; margin: 0 auto; padding: 32px 20px 64px; }
.wrap.wide { max-width: 1100px; }
.top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 24px;
}
.page-head { margin-bottom: 20px; }
.page-head h1 { margin-bottom: 4px; }
.site-nav {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 0 0 10px;
  margin: 0 0 20px;
  border-bottom: 1px solid var(--line);
}
.nav-groups {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px 0;
  flex: 1;
  min-width: 0;
}
.nav-group {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 2px;
  padding: 0 12px;
  border-right: 1px solid var(--line);
}
.nav-group:first-child { padding-left: 0; }
.nav-group:last-child { border-right: 0; padding-right: 0; }
.nav-link {
  display: inline-block;
  padding: 6px 10px;
  color: var(--muted);
  text-decoration: none;
  font-size: 13px;
  border-radius: 4px;
  line-height: 1.3;
}
.nav-link:hover {
  color: var(--ink);
  background: #ebe6dc;
}
.nav-link.on {
  color: var(--accent);
  font-weight: 650;
  background: #e7f0ea;
}
.nav-logout { flex-shrink: 0; }
.nav-logout button {
  padding: 6px 10px;
  font-size: 13px;
}
.subnav {
  display: flex;
  flex-wrap: wrap;
  gap: 2px;
  margin: -8px 0 16px;
}
h1 { font-size: 22px; font-weight: 650; margin: 0 0 8px; }
.muted { color: var(--muted); font-size: 13px; }
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 20px;
  margin-bottom: 16px;
}
label { display: block; font-size: 13px; margin: 0 0 6px; }
input[type=text], input[type=password], input[type=email], input[type=number], textarea, select {
  width: 100%;
  padding: 8px 10px;
  border: 1px solid var(--line);
  border-radius: 4px;
  font: inherit;
  background: #fff;
  margin-bottom: 12px;
}
button, .btn {
  font: inherit;
  background: var(--accent);
  color: #fff;
  border: 0;
  border-radius: 4px;
  padding: 8px 14px;
  cursor: pointer;
}
button.ghost, a.btn.ghost {
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--line);
}
button.danger { background: var(--danger); }
.row { display: flex; gap: 12px; flex-wrap: wrap; align-items: end; }
.row .field { flex: 1; min-width: 160px; }
.form-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0 16px;
  align-items: end;
}
.form-grid .field { min-width: 0; }
.form-grid .form-actions { align-self: end; }
.form-grid .form-actions button,
.form-grid .form-actions .btn { margin-bottom: 12px; }
@media (max-width: 900px) {
  .form-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 560px) {
  .form-grid { grid-template-columns: 1fr; }
}
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { text-align: left; padding: 8px 6px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { font-size: 12px; color: var(--muted); font-weight: 600; }
.banner {
  padding: 10px 12px;
  border-radius: 6px;
  margin-bottom: 16px;
  border: 1px solid var(--line);
}
.banner.ok { background: #e7f0ea; color: var(--ok); }
.banner.err { background: #f6eaea; color: var(--danger); }
.banner.warn { background: #f4eedf; color: var(--warn); }
code, .mono { font-family: ui-monospace, Consolas, monospace; font-size: 13px; }
.secret { word-break: break-all; }
form.inline { display: inline; }

.admin-tenants td { vertical-align: middle; }
.admin-tenants .who { font-weight: 650; }
.admin-tenants .quota-line {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 16px;
}
.admin-tenants .q-group {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
}
.admin-tenants .q-group > span { color: var(--muted); font-size: 12px; }
.admin-tenants label.chk {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  margin: 0;
  font-size: 12px;
  color: var(--muted);
}
.admin-tenants input[type=number] {
  width: 92px;
  margin: 0;
  padding: 4px 8px;
}
.admin-tenants .quota-line button,
.admin-tenants .order-line button,
.admin-tenants .order-line .btn {
  margin: 0;
  padding: 4px 10px;
  font-size: 13px;
}
.admin-tenants .order-line {
  display: flex;
  flex-wrap: nowrap;
  align-items: center;
  gap: 4px;
}
.admin-tenants .order-line form { display: inline-flex; margin: 0; }
.admin-tenants a.btn {
  color: #fff;
  text-decoration: none;
}

/* OTA task table */
.task-table { font-size: 13px; }
.task-table th, .task-table td {
  padding: 6px 8px;
  border-bottom: 1px solid var(--line);
}
.task-table th { font-size: 12px; color: var(--muted); font-weight: 600; white-space: nowrap; }
.task-table td { vertical-align: middle; }
.task-table .mono { font-size: 12px; word-break: break-all; }
.task-row { cursor: pointer; }
.task-row:hover { background: #faf8f3; }
.actions-cell {
  white-space: nowrap;
  width: 1%;
  vertical-align: middle;
}
.actions-cell form.inline { display: inline-flex; gap: 4px; margin-right: 4px; }
.actions-cell button {
  padding: 4px 8px;
  font-size: 12px;
}
.op-menu { position: relative; display: inline-block; }
.op-menu > summary {
  list-style: none;
  cursor: pointer;
  font: inherit;
  background: #fff;
  color: var(--ink);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 4px 10px;
  font-size: 12px;
  line-height: 1.3;
}
.op-menu > summary::-webkit-details-marker { display: none; }
.op-menu > summary::after { content: " ▾"; }
.op-menu[open] > summary { background: #f4f1ea; }
.op-menu-list {
  position: absolute;
  right: 0;
  top: calc(100% + 4px);
  z-index: 30;
  min-width: 140px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 6px;
  box-shadow: 0 8px 20px rgba(28, 25, 22, 0.1);
  padding: 4px;
}
.op-menu-list a,
.op-menu-list button {
  display: block;
  width: 100%;
  box-sizing: border-box;
  text-align: left;
  background: transparent;
  color: var(--ink);
  border: 0;
  border-radius: 4px;
  padding: 7px 10px;
  font: inherit;
  font-size: 13px;
  line-height: 1.3;
  cursor: pointer;
  text-decoration: none;
  margin: 0;
}
.op-menu-list a:hover,
.op-menu-list button:hover { background: #f4f1ea; }
.op-menu-list button.danger {
  color: var(--danger);
  background: transparent;
}
.op-menu-list button.danger:hover { background: #f6eaea; }
.op-menu-list form { margin: 0; }
.task-detail td {
  padding: 12px 16px;
  background: #faf8f3;
}
.task-detail .banner { margin-bottom: 8px; }

/* command forms: body left, action button always right */
.cmd-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.cmd-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 112px;
  gap: 16px;
  align-items: end;
}
.cmd-row .cmd-body {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 16px;
  align-items: end;
  min-width: 0;
}
.cmd-row .cmd-body .field {
  min-width: 0;
  flex: 1 1 180px;
}
.cmd-row .cmd-body .field-path {
  flex: 1 1 100%;
}
.cmd-row input,
.cmd-row select { margin-bottom: 0; }
.cmd-row > button {
  min-width: 112px;
  width: 112px;
  justify-self: end;
}
.cmd-row .cmd-hint {
  margin: 0;
  flex: 1 1 100%;
}
@media (max-width: 560px) {
  .cmd-row { grid-template-columns: 1fr; }
  .cmd-row > button { width: 100%; }
}

/* alert rule form: one aligned row */
.rule-grid {
  display: grid;
  grid-template-columns: 1.6fr 1.6fr 0.8fr 1fr auto;
  gap: 0 16px;
  align-items: end;
}
.rule-grid .field { min-width: 0; }
.rule-grid .form-actions { align-self: end; }
@media (max-width: 900px) {
  .rule-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .rule-grid .form-actions { grid-column: 1 / -1; }
}
@media (max-width: 560px) {
  .rule-grid { grid-template-columns: 1fr; }
}

/* stat cards */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px;
}
.stat {
  padding: 14px;
  background: #faf8f3;
  border: 1px solid var(--line);
  border-radius: 6px;
}
.stat-num {
  font-size: 24px;
  font-weight: 700;
  color: var(--accent);
}
.stat-label {
  font-size: 12px;
  color: var(--muted);
  margin-top: 4px;
}

/* modal */
.modal {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(28, 25, 22, 0.45);
  z-index: 100;
  align-items: center;
  justify-content: center;
}
.modal.open { display: flex; }
.modal-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 20px;
  width: 420px;
  max-width: 90vw;
}
.modal-card h3 { margin: 0 0 8px; }
.modal-actions {
  display: flex;
  gap: 10px;
  justify-content: flex-end;
  margin-top: 16px;
}

.pill {
  display: inline-block;
  font-size: 12px;
  padding: 2px 8px;
  border-radius: 999px;
  border: 1px solid var(--line);
}
.pill.on { background: #e7f0ea; color: var(--ok); border-color: #b7d1c2; }
.pill.off { background: #eeeae3; color: var(--muted); }
.pill.revoked { background: #f6eaea; color: var(--danger); border-color: #e0c4c4; }

.wrap.app { max-width: 640px; }
.device-card {
  display: block;
  padding: 12px 4px;
  border-bottom: 1px solid var(--line);
  color: inherit;
  text-decoration: none;
}
.device-card:last-child { border-bottom: 0; }
.device-card:hover { background: #faf8f3; }
.device-card-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
  margin-bottom: 4px;
}
.action-btns { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 12px; }
.action-btns form { margin: 0; }
@media (max-width: 560px) {
  .wrap { padding: 16px 12px 48px; }
  .top { flex-direction: column; align-items: flex-start; }
}
.model-pick {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
  align-items: end;
}
.model-pick .field { flex: 1; min-width: 220px; max-width: 480px; }
.model-pick select { margin-bottom: 0; }
.pager { margin: 12px 0 0; }
.pager a { margin-left: 12px; }