:root {
  color-scheme: light;
  --bg: #f6f8fb;
  --surface: #ffffff;
  --surface-strong: #eef3f8;
  --text: #13202e;
  --muted: #657385;
  --line: #dbe3ec;
  --accent: #0f766e;
  --accent-strong: #0b5f59;
  --danger: #b42318;
  --warning: #b54708;
  --success: #047857;
  --shadow: 0 16px 42px rgba(19, 32, 46, 0.08);
}

* {
  box-sizing: border-box;
}

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

.app-shell {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 260px 1fr;
}

.sidebar {
  background: #101923;
  color: #f7fbff;
  padding: 24px 18px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 34px;
}

.brand-mark {
  width: 44px;
  height: 44px;
  border-radius: 8px;
  display: grid;
  place-items: center;
  background: #18a999;
  color: #06231f;
  font-weight: 800;
}

.brand strong,
.brand small {
  display: block;
}

.brand small {
  color: #9fb1c5;
  font-size: 12px;
  margin-top: 2px;
}

.nav {
  display: grid;
  gap: 6px;
}

.nav a {
  color: #c5d1de;
  text-decoration: none;
  padding: 11px 12px;
  border-radius: 8px;
  font-size: 14px;
}

.nav a:hover,
.nav a.active {
  background: rgba(255, 255, 255, 0.09);
  color: #ffffff;
}

.main {
  padding: 28px;
  min-width: 0;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 24px;
  margin-bottom: 24px;
}

.topbar-actions {
  display: flex;
  align-items: flex-end;
  gap: 12px;
}

.api-key-field {
  display: grid;
  gap: 5px;
  min-width: 230px;
  color: var(--muted);
  font-size: 12px;
}

input,
select {
  width: 100%;
  min-height: 38px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #ffffff;
  color: var(--text);
  padding: 8px 10px;
  font: inherit;
  font-size: 14px;
}

h1,
h2,
p {
  margin: 0;
}

h1 {
  font-size: 28px;
  line-height: 1.2;
}

.topbar p {
  color: var(--muted);
  margin-top: 6px;
}

.status {
  min-width: 190px;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  color: var(--muted);
  font-size: 14px;
  text-align: center;
}

.status.ok {
  color: var(--success);
  border-color: rgba(4, 120, 87, 0.35);
}

.status.degraded {
  color: var(--warning);
  border-color: rgba(181, 71, 8, 0.35);
}

.metrics {
  display: grid;
  grid-template-columns: repeat(7, minmax(120px, 1fr));
  gap: 14px;
  margin-bottom: 18px;
}

.webhook-strip {
  display: grid;
  grid-template-columns: repeat(9, minmax(96px, 1fr));
  gap: 10px;
  margin-bottom: 18px;
}

.delivery-section {
  margin-bottom: 18px;
}

.delivery-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 14px;
  margin-bottom: 10px;
}

.delivery-header h2 {
  font-size: 16px;
}

.delivery-filters {
  display: grid;
  grid-template-columns: minmax(200px, 1fr) auto auto;
  gap: 10px;
  align-items: center;
}

.delivery-strip {
  display: grid;
  grid-template-columns: repeat(8, minmax(104px, 1fr));
  gap: 10px;
}

.metric,
.delivery-metric,
.webhook-metric,
.panel {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.metric {
  padding: 16px;
}

.webhook-metric {
  padding: 12px;
  min-width: 0;
}

.delivery-metric {
  padding: 12px;
  min-width: 0;
}

.metric span {
  color: var(--muted);
  font-size: 12px;
  text-transform: uppercase;
}

.delivery-metric span,
.webhook-metric span {
  display: block;
  color: var(--muted);
  font-size: 11px;
  text-transform: uppercase;
}

.metric strong {
  display: block;
  margin-top: 8px;
  font-size: 26px;
}

.webhook-metric strong {
  display: block;
  margin-top: 6px;
  font-size: 20px;
}

.delivery-metric strong {
  display: block;
  margin-top: 6px;
  font-size: 20px;
}

.delivery-metric.attention {
  border-color: rgba(181, 71, 8, 0.38);
}

.delivery-metric.attention strong {
  color: var(--warning);
}

.webhook-metric.attention {
  border-color: rgba(180, 35, 24, 0.35);
}

.webhook-metric.attention strong {
  color: var(--danger);
}

.content-grid {
  display: grid;
  grid-template-columns: 1.5fr 0.8fr;
  gap: 18px;
}

.management-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin-top: 18px;
}

.form-grid {
  display: grid;
  gap: 10px;
  padding: 16px 18px;
}

.message-filters {
  display: grid;
  grid-template-columns: minmax(180px, 0.8fr) minmax(170px, 0.7fr) minmax(260px, 1.4fr) 92px auto auto;
  gap: 10px;
  padding: 14px 18px;
  border-bottom: 1px solid var(--line);
  align-items: center;
}

.management-list {
  margin-top: 18px;
}

.split-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
  padding: 16px 18px;
}

.split-list h3,
.webhook-lists h3 {
  margin: 0 0 10px;
  font-size: 14px;
}

.wide {
  grid-row: span 2;
}

.panel {
  min-width: 0;
  overflow: hidden;
}

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 16px 18px;
  border-bottom: 1px solid var(--line);
}

.panel-header h2 {
  font-size: 16px;
}

button {
  border: 0;
  border-radius: 8px;
  background: var(--accent);
  color: #ffffff;
  padding: 9px 12px;
  font-weight: 700;
  cursor: pointer;
}

button:hover {
  background: var(--accent-strong);
}

.ghost-button {
  background: transparent;
  color: var(--accent);
  border: 1px solid rgba(15, 118, 110, 0.35);
  padding: 7px 10px;
}

.ghost-button:hover {
  background: rgba(15, 118, 110, 0.08);
}

.danger-button {
  background: var(--danger);
}

.danger-button:hover {
  background: #8f1d14;
}

.table-wrap {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 1020px;
}

th,
td {
  padding: 14px 18px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  font-size: 14px;
}

th {
  color: var(--muted);
  font-size: 12px;
  text-transform: uppercase;
}

.tag {
  display: inline-flex;
  align-items: center;
  min-height: 26px;
  border-radius: 999px;
  padding: 4px 10px;
  font-size: 12px;
  font-weight: 700;
  background: var(--surface-strong);
}

.tag.delivered,
.tag.active {
  color: var(--success);
}

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

.tag.quarantined,
.tag.deferred,
.tag.pending {
  color: var(--warning);
}

.tag.bounced,
.tag.failed {
  color: var(--danger);
}

.delivery-note {
  display: inline-block;
  max-width: 260px;
  color: var(--muted);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  vertical-align: bottom;
}

.investigation {
  margin-top: 18px;
}

.investigation-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
  padding: 16px 18px;
}

.investigation-summary {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 12px;
}

.investigation-summary div,
.reason-item,
.event-item {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fbfcfe;
  padding: 12px;
}

.investigation-summary span {
  display: block;
  color: var(--muted);
  font-size: 12px;
}

.investigation-summary strong {
  display: block;
  margin-top: 5px;
  overflow-wrap: anywhere;
}

.investigation-section h3 {
  margin: 0 0 12px;
  font-size: 14px;
}

.investigation-section.full {
  grid-column: 1 / -1;
}

.investigation-section dl {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 8px 12px;
  margin: 0;
}

.investigation-section dt {
  color: var(--muted);
  font-size: 13px;
}

.investigation-section dd {
  margin: 0;
  font-size: 13px;
  overflow-wrap: anywhere;
}

.reason-list,
.event-list {
  display: grid;
  gap: 10px;
}

.reason-item strong,
.event-item strong {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  font-size: 13px;
}

.reason-item strong span {
  color: var(--warning);
}

.reason-item p,
.empty-state {
  margin: 6px 0 0;
  color: var(--muted);
  font-size: 13px;
}

.event-item span {
  display: block;
  margin-top: 4px;
  color: var(--muted);
  font-size: 12px;
}

.alert-list,
.tenant-list,
.quarantine-list {
  display: grid;
  gap: 10px;
  padding: 16px 18px;
}

.compact-list {
  padding: 0;
}

.alert-item,
.tenant-item,
.quarantine-item {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 12px;
  background: #fbfcfe;
}

.tenant-item small {
  display: block;
  color: var(--muted);
  font-size: 12px;
  margin-top: 4px;
  overflow-wrap: anywhere;
}

.alert-item strong,
.tenant-item strong,
.quarantine-item strong {
  display: block;
  font-size: 14px;
}

.alert-item span,
.tenant-item span,
.quarantine-item span,
.quarantine-item small {
  display: block;
  color: var(--muted);
  font-size: 13px;
  margin-top: 4px;
}

.quarantine-item {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 12px;
  align-items: center;
}

.quarantine-actions {
  display: flex;
  gap: 8px;
  align-items: center;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.webhook-workspace {
  display: grid;
  gap: 18px;
  padding: 16px 18px;
}

.webhook-form {
  grid-template-columns: minmax(160px, 0.8fr) minmax(160px, 0.8fr) minmax(260px, 1.4fr) minmax(280px, 1.5fr) 110px 120px auto auto;
  padding: 0;
}

.webhook-lists {
  display: grid;
  grid-template-columns: minmax(280px, 0.85fr) minmax(0, 1.15fr);
  gap: 18px;
}

.webhook-delivery-filters {
  grid-template-columns: minmax(160px, 1fr) minmax(180px, 1fr) minmax(150px, 0.7fr) auto auto;
  padding: 0 0 12px;
  border-bottom: 0;
}

.webhook-delivery-list {
  display: grid;
  gap: 10px;
}

.webhook-delivery-item {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 12px;
  align-items: center;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 12px;
  background: #fbfcfe;
}

.webhook-delivery-item strong {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 14px;
}

.webhook-delivery-item span,
.webhook-delivery-item small {
  display: block;
  color: var(--muted);
  font-size: 13px;
  margin-top: 4px;
  overflow-wrap: anywhere;
}

.webhook-delivery-item .error-text {
  color: var(--danger);
}

.webhook-endpoint-item {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 12px;
  align-items: start;
}

.webhook-endpoint-actions {
  display: flex;
  gap: 8px;
  align-items: center;
  flex-wrap: wrap;
  justify-content: flex-end;
}

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

  .sidebar {
    position: static;
  }

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

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

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

  .delivery-header,
  .delivery-filters {
    grid-template-columns: 1fr;
    display: grid;
    align-items: stretch;
  }

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

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

  .message-filters,
  .webhook-form,
  .webhook-lists,
  .webhook-delivery-filters,
  .management-grid,
  .split-list,
  .investigation-grid,
  .investigation-summary,
  .webhook-endpoint-item,
  .quarantine-item {
    grid-template-columns: 1fr;
  }

  .quarantine-actions,
  .webhook-endpoint-actions {
    justify-content: flex-start;
  }
}

@media (max-width: 640px) {
  .main {
    padding: 18px;
  }

  .topbar {
    display: grid;
  }

  .topbar-actions {
    display: grid;
    align-items: stretch;
  }

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

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

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

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