:root {
  --bg: #f2efe8;
  --bg-elevated: rgba(255, 255, 255, 0.88);
  --bg-soft: rgba(255, 255, 255, 0.66);
  --text: #142027;
  --muted: #58666f;
  --line: rgba(20, 32, 39, 0.12);
  --accent: #0d7a68;
  --accent-strong: #095f51;
  --danger: #b53a2d;
  --warning: #c7891a;
  --success: #1e8c4b;
  --shadow: 0 18px 40px rgba(18, 40, 52, 0.1);
}

html[data-theme="dark"] {
  --bg: #0b141a;
  --bg-elevated: rgba(17, 28, 36, 0.92);
  --bg-soft: rgba(25, 40, 49, 0.75);
  --text: #edf4f3;
  --muted: #94a8af;
  --line: rgba(237, 244, 243, 0.1);
  --accent: #47c1a8;
  --accent-strong: #7cf2d6;
  --danger: #ff7d71;
  --warning: #ffce63;
  --success: #7ae7a4;
  --shadow: 0 18px 40px rgba(0, 0, 0, 0.28);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top right, rgba(71, 193, 168, 0.18), transparent 24%),
    radial-gradient(circle at bottom left, rgba(255, 206, 99, 0.14), transparent 22%),
    var(--bg);
}

.shell {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 280px 1fr;
}

.sidebar {
  padding: 24px 20px;
  border-right: 1px solid var(--line);
  background:
    linear-gradient(180deg, rgba(71, 193, 168, 0.12), transparent 24%),
    var(--bg-soft);
  backdrop-filter: blur(18px);
  position: sticky;
  top: 0;
  height: 100vh;
}

.brand {
  display: flex;
  gap: 14px;
  align-items: center;
  margin-bottom: 28px;
}

.brand-mark {
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--accent), #1f9c88);
  color: white;
  font-weight: 700;
}

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

.sidebar-status {
  margin: 0 0 18px;
  padding: 14px 16px;
  border-radius: 18px;
  border: 1px solid var(--line);
  background: var(--bg-elevated);
  display: grid;
  gap: 6px;
}

.sidebar-label,
.eyebrow {
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.74rem;
  font-weight: 700;
}

.nav-link {
  text-decoration: none;
  color: var(--muted);
  padding: 13px 15px;
  border-radius: 16px;
  border: 1px solid transparent;
  transition: 140ms ease;
}

.nav-link.is-active,
.nav-link:hover {
  color: var(--text);
  background: var(--bg-elevated);
  border-color: var(--line);
  transform: translateX(2px);
}

.sidebar-footer {
  margin-top: 24px;
}

.content {
  padding: 20px;
}

.topbar,
.panel-header,
.card-header,
.actions,
.inline-form,
.toggle-row {
  display: flex;
  gap: 12px;
  align-items: center;
  justify-content: space-between;
}

.topbar {
  margin-bottom: 20px;
  padding: 14px 18px;
  border-radius: 18px;
  background: var(--bg-elevated);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

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

.topbar-title small,
.sidebar-status small,
.mode-banner span,
.kpi-card span {
  color: var(--muted);
}

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

.status-dot {
  display: inline-block;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--success);
  margin-right: 8px;
}

.panel {
  display: grid;
  gap: 18px;
}

.hero-card {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  align-items: end;
  padding: 22px 24px;
  border-radius: 26px;
  border: 1px solid var(--line);
  background:
    radial-gradient(circle at top right, rgba(71, 193, 168, 0.18), transparent 30%),
    linear-gradient(135deg, rgba(13, 122, 104, 0.12), transparent 55%),
    var(--bg-elevated);
  box-shadow: var(--shadow);
}

.hero-card h1 {
  margin: 8px 0 10px;
  font-size: clamp(1.6rem, 3vw, 2.5rem);
  line-height: 1.1;
}

.hero-card p {
  margin: 0;
  max-width: 68ch;
  color: var(--muted);
}

.hero-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.compact-hero {
  align-items: center;
}

.mode-banner {
  margin-bottom: 20px;
  padding: 14px 16px;
  border-radius: 18px;
  border: 1px solid var(--line);
  display: flex;
  gap: 12px;
  align-items: center;
  flex-wrap: wrap;
}

.mode-banner.mock {
  background: rgba(199, 137, 26, 0.12);
  border-color: rgba(199, 137, 26, 0.28);
}

.mode-banner.live {
  background: rgba(30, 140, 75, 0.12);
  border-color: rgba(30, 140, 75, 0.24);
}

.card {
  background: var(--bg-elevated);
  border: 1px solid var(--line);
  border-radius: 22px;
  padding: 18px;
  box-shadow: var(--shadow);
}

.kpi-grid,
.chart-grid,
.feature-grid {
  display: grid;
  gap: 16px;
}

.kpi-grid {
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
}

.chart-grid {
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.feature-grid {
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
}

.preset-card h3 {
  margin: 10px 0 8px;
}

.preset-card p {
  margin: 0;
  color: var(--muted);
}

.kpi-card {
  padding: 18px;
  border-radius: 18px;
  background: linear-gradient(160deg, rgba(71, 193, 168, 0.16), transparent 60%), var(--bg-elevated);
  border: 1px solid var(--line);
}

.kpi-card strong {
  display: block;
  font-size: 1.8rem;
  margin-top: 8px;
}

.kpi-card span {
  display: block;
  margin-top: 6px;
  font-size: 0.85rem;
}

.ont-workspace {
  gap: 20px;
}

.ont-hero {
  align-items: center;
}

.ont-kpi-strip {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.mini-stat {
  padding: 16px 18px;
  border-radius: 20px;
  border: 1px solid var(--line);
  background: linear-gradient(155deg, rgba(71, 193, 168, 0.12), transparent 70%), var(--bg-elevated);
  box-shadow: var(--shadow);
}

.mini-stat span,
.mini-stat small,
.list-summary,
.workflow-link span,
.workflow-header span,
.tip-box {
  color: var(--muted);
}

.mini-stat strong {
  display: block;
  margin: 8px 0 4px;
  font-size: 1.45rem;
}

.ont-tabs {
  display: inline-flex;
  gap: 8px;
  padding: 8px;
  border-radius: 20px;
  border: 1px solid var(--line);
  background: var(--bg-elevated);
  width: fit-content;
  box-shadow: var(--shadow);
}

.ont-tab,
.workflow-link {
  border: 1px solid transparent;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
}

.ont-tab {
  padding: 10px 16px;
  border-radius: 999px;
}

.ont-tab.is-active,
.workflow-link.is-active {
  background: var(--accent);
  color: #fff;
}

.ont-pane,
.workbench-pane {
  display: none;
}

.ont-pane.is-active,
.workbench-pane.is-active {
  display: block;
}

.toolbar-cluster {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  align-items: center;
}

.toolbar-cluster > * {
  min-width: 160px;
}

.list-footer {
  margin-top: 14px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}

.pager {
  display: flex;
  align-items: center;
  gap: 10px;
}

.row-action {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.row-action-menu {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.workbench-layout {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 18px;
}

.workflow-card {
  position: sticky;
  top: 20px;
  align-self: start;
}

.workflow-menu {
  display: grid;
  gap: 10px;
}

.workflow-link {
  text-align: left;
  padding: 14px 16px;
  border-radius: 18px;
  border-color: var(--line);
  background: var(--bg-soft);
}

.workflow-link strong,
.subsection-head h4 {
  display: block;
}

.workflow-link span {
  display: block;
  margin-top: 4px;
  font-size: 0.9rem;
}

.workflow-link.is-active span {
  color: rgba(255, 255, 255, 0.82);
}

.workflow-header {
  display: grid;
  gap: 4px;
  margin-bottom: 8px;
}

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

.tip-box {
  padding: 14px 16px;
  border-radius: 16px;
  border: 1px dashed var(--line);
  background: var(--bg-soft);
}

.subsection-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.split-layout {
  display: grid;
  grid-template-columns: 1.6fr 1fr;
  gap: 18px;
}

.detail-card {
  position: sticky;
  top: 20px;
  align-self: start;
}

.table-wrap {
  overflow: auto;
}

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

.data-table th,
.data-table td {
  padding: 11px 10px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

.compact th,
.compact td {
  padding: 8px 8px;
}

.btn {
  border: 1px solid var(--line);
  background: transparent;
  color: var(--text);
  border-radius: 999px;
  padding: 10px 14px;
  cursor: pointer;
}

.btn:hover {
  border-color: var(--accent);
}

.btn-primary {
  background: var(--accent);
  color: #fff;
  border-color: transparent;
}

.btn-primary:hover {
  background: var(--accent-strong);
}

.btn-full {
  width: 100%;
}

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

input,
select,
textarea {
  width: 100%;
  padding: 11px 12px;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--text);
}

textarea {
  resize: vertical;
}

.stack-form,
.stack-list,
.subsection {
  display: grid;
  gap: 12px;
}

.action-strip {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.grid-2,
.grid-3 {
  display: grid;
  gap: 12px;
}

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

.grid-3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

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

.meta-list {
  display: grid;
  gap: 8px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.meta-list div {
  padding: 10px 12px;
  border-radius: 14px;
  background: var(--bg-soft);
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 10px;
  border-radius: 999px;
  font-size: 0.88rem;
}

.badge.online {
  background: rgba(30, 140, 75, 0.16);
  color: var(--success);
}

.badge.offline {
  background: rgba(181, 58, 45, 0.16);
  color: var(--danger);
}

.badge.unauth {
  background: rgba(199, 137, 26, 0.16);
  color: var(--warning);
}

.badge.online-not-auth {
  background: rgba(199, 137, 26, 0.16);
  color: var(--warning);
}

.empty-state {
  color: var(--muted);
  padding: 16px;
  border: 1px dashed var(--line);
  border-radius: 16px;
}

.toast-stack {
  position: fixed;
  right: 18px;
  bottom: 18px;
  display: grid;
  gap: 10px;
  z-index: 1000;
}

.toast {
  min-width: 260px;
  padding: 12px 14px;
  border-radius: 16px;
  background: var(--bg-elevated);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.modal {
  width: min(880px, calc(100vw - 32px));
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--bg-elevated);
  color: var(--text);
}

.modal::backdrop {
  background: rgba(0, 0, 0, 0.35);
}

.modal-body {
  padding: 18px;
}

pre {
  white-space: pre-wrap;
  word-break: break-word;
  padding: 16px;
  border-radius: 14px;
  background: rgba(0, 0, 0, 0.18);
  max-height: 60vh;
  overflow: auto;
}

label span {
  display: block;
  margin-bottom: 6px;
  color: var(--muted);
  font-size: 0.92rem;
}

@media (max-width: 1100px) {
  .shell {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: static;
    height: auto;
  }

  .split-layout {
    grid-template-columns: 1fr;
  }

  .detail-card {
    position: static;
  }

  .workbench-layout,
  .ont-kpi-strip {
    grid-template-columns: 1fr;
  }

  .workflow-card {
    position: static;
  }
}

@media (max-width: 720px) {
  .content {
    padding: 14px;
  }

  .topbar,
  .hero-card,
  .panel-header,
  .card-header,
  .actions,
  .inline-form,
  .toolbar-cluster,
  .list-footer,
  .subsection-head {
    flex-direction: column;
    align-items: stretch;
  }

  .grid-2,
  .grid-3,
  .grid-4,
  .meta-list {
    grid-template-columns: 1fr;
  }

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

  .ont-tabs {
    width: 100%;
    display: grid;
    grid-template-columns: 1fr;
  }
}