:root {
  --panel-bg: #eef2f5;
  --panel-ink: #102131;
  --panel-muted: #587083;
  --panel-line: rgba(16, 33, 49, 0.14);
  --panel-card: rgba(255, 255, 255, 0.9);
  --panel-strong: rgba(255, 255, 255, 0.98);
  --panel-accent: #005e89;
  --panel-accent-2: #e07a24;
  --panel-success: #0c8f67;
  --panel-danger: #bf4d3a;
  --panel-shadow: 0 18px 48px rgba(15, 33, 49, 0.12);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body.panel-body {
  font-family: "Space Grotesk", "PingFang SC", "Noto Sans SC", sans-serif;
  color: var(--panel-ink);
  background:
    radial-gradient(1200px 520px at 0% 0%, rgba(224, 122, 36, 0.12), transparent 70%),
    radial-gradient(900px 480px at 100% 0%, rgba(0, 94, 137, 0.14), transparent 72%),
    linear-gradient(180deg, #f7f9fb 0%, var(--panel-bg) 100%);
}

.page-shell {
  max-width: 1520px;
  margin: 0 auto;
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.shell-header {
  border: 1px solid var(--panel-line);
  border-radius: 28px;
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.96), rgba(243, 247, 250, 0.88));
  box-shadow: var(--panel-shadow);
  padding: 12px 14px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.shell-brand-row {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
}

.shell-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 10px;
  border-radius: 999px;
  background: rgba(0, 94, 137, 0.08);
  color: var(--panel-accent);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.06em;
}

.shell-title {
  margin: 6px 0 2px;
  font-size: clamp(1.28rem, 1.95vw, 2.12rem);
  line-height: 1.05;
}

.shell-subtitle {
  margin: 0;
  max-width: 820px;
  color: var(--panel-muted);
  font-size: 0.82rem;
  line-height: 1.35;
}

.shell-status {
  display: grid;
  grid-template-columns: repeat(3, minmax(132px, 1fr));
  gap: 8px;
  min-width: min(420px, 100%);
}

.shell-status-card {
  border: 1px solid var(--panel-line);
  border-radius: 18px;
  background: var(--panel-strong);
  min-height: 42px;
  padding: 8px 10px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 2px;
}

.shell-status-label {
  color: var(--panel-muted);
  font-size: 0.62rem;
  letter-spacing: 0.08em;
}

.shell-status-value {
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.82rem;
  font-weight: 700;
}

.shell-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.shell-nav-link {
  min-height: 40px;
  padding: 8px 14px;
  border-radius: 16px;
  border: 1px solid var(--panel-line);
  background: var(--panel-strong);
  color: var(--panel-ink);
  text-decoration: none;
  font-weight: 700;
  font-size: 0.76rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.shell-nav-link.is-active {
  background: linear-gradient(135deg, var(--panel-accent), #0a7bb1);
  color: #fff;
  border-color: transparent;
}

.monitor-cluster {
  position: relative;
  min-width: 0;
  border: 1px solid var(--panel-line);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.82);
  box-shadow: 0 8px 20px rgba(15, 33, 49, 0.05);
  padding: 8px 8px 6px;
  display: flex;
  flex-direction: column;
  gap: 0;
}

.monitor-cluster-label {
  position: absolute;
  top: -8px;
  left: 10px;
  padding: 1px 6px;
  border: 1px solid var(--panel-line);
  border-radius: 999px;
  background: #f4f7fa;
  color: var(--panel-muted);
  font-size: 0.56rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  line-height: 1.1;
  pointer-events: none;
}

.monitor-cluster--status {
  background: linear-gradient(145deg, rgba(12, 143, 103, 0.06), rgba(255, 255, 255, 0.94));
}

.monitor-cluster--status .monitor-cluster-label {
  background: rgba(237, 250, 245, 0.98);
  color: var(--panel-success);
}

.monitor-cluster--config {
  background: linear-gradient(145deg, rgba(16, 33, 49, 0.04), rgba(255, 255, 255, 0.94));
}

.monitor-cluster--action {
  background: linear-gradient(145deg, rgba(224, 122, 36, 0.08), rgba(255, 255, 255, 0.96));
}

.monitor-cluster--action .monitor-cluster-label {
  background: rgba(255, 247, 239, 0.98);
  color: var(--panel-accent-2);
}

.panel-grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 14px;
}

.panel-card {
  border: 1px solid var(--panel-line);
  border-radius: 24px;
  background: var(--panel-card);
  box-shadow: 0 10px 28px rgba(15, 33, 49, 0.06);
  padding: 18px;
}

.panel-card h2,
.panel-card h3 {
  margin: 0;
}

.panel-card p {
  color: var(--panel-muted);
  line-height: 1.6;
}

.span-12 { grid-column: span 12; }
.span-8 { grid-column: span 8; }
.span-7 { grid-column: span 7; }
.span-6 { grid-column: span 6; }
.span-5 { grid-column: span 5; }
.span-4 { grid-column: span 4; }

.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 12px;
}

.stat-card {
  border: 1px solid var(--panel-line);
  border-radius: 18px;
  background: var(--panel-strong);
  padding: 14px;
}

.stat-label {
  color: var(--panel-muted);
  font-size: 0.74rem;
  letter-spacing: 0.08em;
}

.stat-value {
  margin-top: 6px;
  font-family: "IBM Plex Mono", monospace;
  font-size: 1.08rem;
  font-weight: 700;
}

.action-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.panel-button,
.panel-input,
.panel-select,
.panel-textarea {
  min-height: 48px;
  border-radius: 16px;
  border: 1px solid rgba(16, 33, 49, 0.18);
  font: inherit;
}

.panel-button {
  padding: 12px 18px;
  background: linear-gradient(135deg, var(--panel-accent), #0a7bb1);
  color: #fff;
  cursor: pointer;
  font-weight: 700;
}

.panel-button.secondary {
  background: var(--panel-strong);
  color: var(--panel-ink);
}

.panel-button.warn {
  background: linear-gradient(135deg, var(--panel-accent-2), #cc5c17);
}

.panel-input,
.panel-select,
.panel-textarea {
  width: 100%;
  padding: 10px 12px;
  background: var(--panel-strong);
  color: var(--panel-ink);
}

.panel-textarea {
  min-height: 108px;
  resize: vertical;
}

.field-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.field label {
  color: var(--panel-muted);
  font-size: 0.82rem;
  font-weight: 700;
}

.config-section {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.config-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 12px;
}

.config-tab-shell {
  padding: 12px;
}

.config-tab-bar {
  display: inline-grid;
  grid-template-columns: repeat(2, minmax(148px, 1fr));
  gap: 8px;
}

.config-tab {
  min-height: 46px;
  padding: 10px 16px;
  border-radius: 16px;
  border: 1px solid var(--panel-line);
  background: var(--panel-strong);
  color: var(--panel-ink);
  font: inherit;
  font-weight: 700;
  cursor: pointer;
}

.config-tab.is-active {
  background: linear-gradient(135deg, var(--panel-accent), #0a7bb1);
  color: #fff;
  border-color: transparent;
}

.config-card {
  border: 1px solid var(--panel-line);
  border-radius: 22px;
  background: var(--panel-strong);
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.config-card-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 10px;
}

.config-card-code {
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.82rem;
  color: var(--panel-muted);
}

.message-bar {
  min-height: 24px;
  color: var(--panel-success);
  font-weight: 700;
}

.message-bar.error {
  color: var(--panel-danger);
}

.hidden {
  display: none !important;
}

.preset-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 10px;
}

.preset-card {
  border: 1px solid var(--panel-line);
  border-radius: 18px;
  background: var(--panel-strong);
  padding: 14px;
}

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

@media (max-width: 980px) {
  .shell-brand-row {
    flex-direction: column;
  }

  .shell-status {
    width: 100%;
    min-width: 0;
  }

  .page-shell {
    padding: 10px;
    gap: 8px;
  }

  .shell-header {
    padding: 10px 12px;
    gap: 8px;
  }

  .monitor-cluster {
    width: 100%;
  }

  .span-8,
  .span-7,
  .span-6,
  .span-5,
  .span-4 {
    grid-column: span 12;
  }

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