/* monitrd design system — light theme default */

:root {
  /* Primary (Signal Orange) */
  --primary: #9f3d00;
  --primary-container: #c74e00;
  --on-primary: #ffffff;
  --on-primary-container: #fffbff;
  --primary-fixed: #ffdbcd;
  --primary-fixed-dim: #ffb596;

  /* Secondary (Metadata) */
  --secondary: #515f74;
  --secondary-container: #d5e3fc;
  --on-secondary: #ffffff;
  --on-secondary-container: #57657a;

  /* Tertiary (Teal — data viz, healthy status) */
  --tertiary: #00647c;
  --tertiary-container: #007f9d;
  --on-tertiary: #ffffff;
  --on-tertiary-container: #fafdff;
  --tertiary-fixed: #b7eaff;
  --tertiary-fixed-dim: #6cd3f7;
  --on-tertiary-fixed: #003545;

  /* Surfaces */
  --surface: #f9f9f8;
  --surface-bright: #f9f9f8;
  --surface-dim: #dadad9;
  --surface-container-lowest: #ffffff;
  --surface-container-low: #f4f4f3;
  --surface-container: #eeeeed;
  --surface-container-high: #e8e8e7;
  --surface-container-highest: #e2e2e2;
  --surface-variant: #e2e2e2;

  /* Text */
  --on-background: #1a1c1c;
  --on-surface: #1a1c1c;
  --on-surface-variant: #554336;

  /* Outlines */
  --outline: #887364;
  --outline-variant: #dbc2b0;

  /* Error */
  --error: #ba1a1a;
  --error-container: #ffdad6;
  --on-error: #ffffff;
  --on-error-container: #93000a;

  /* Inverse */
  --inverse-surface: #2f3130;
  --inverse-on-surface: #f1f1f0;
  --inverse-primary: #ffb596;
}

/* Dark theme overrides */
.dark {
  --primary: #8ed5ff;
  --primary-container: #38bdf8;
  --on-primary: #00354a;
  --on-primary-container: #004965;
  --primary-fixed: #c4e7ff;
  --primary-fixed-dim: #7bd0ff;

  --secondary: #b9c8de;
  --secondary-container: #39485a;
  --on-secondary: #233143;
  --on-secondary-container: #a7b6cc;

  --tertiary: #56e5a9;
  --tertiary-container: #30c88f;
  --on-tertiary: #003824;
  --on-tertiary-container: #004e34;
  --tertiary-fixed: #6ffbbe;
  --tertiary-fixed-dim: #4edea3;
  --on-tertiary-fixed: #003824;

  --surface: #0b1326;
  --surface-bright: #31394d;
  --surface-dim: #0b1326;
  --surface-container-lowest: #060e20;
  --surface-container-low: #131b2e;
  --surface-container: #171f33;
  --surface-container-high: #222a3d;
  --surface-container-highest: #2d3449;
  --surface-variant: #2d3449;

  --on-background: #dae2fd;
  --on-surface: #dae2fd;
  --on-surface-variant: #bdc8d1;

  --outline: #87929a;
  --outline-variant: #3e484f;

  --error: #ffb4ab;
  --error-container: #93000a;
  --on-error: #690005;
  --on-error-container: #ffdad6;

  --inverse-surface: #dae2fd;
  --inverse-on-surface: #283044;
  --inverse-primary: #00668a;
}

/* Reset & base */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { font-size: 16px; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background: var(--surface);
  color: var(--on-background);
  min-height: 100vh;
}

h1, h2, h3, h4, h5, h6 {
  font-family: 'Space Grotesk', sans-serif;
  letter-spacing: -0.02em;
}

/* Material symbols */
.material-symbols-outlined {
  font-variation-settings: 'FILL' 0, 'wght' 400, 'GRAD' 0, 'opsz' 24;
  vertical-align: middle;
}

/* Utility classes */
.font-headline { font-family: 'Space Grotesk', sans-serif; }
.font-body { font-family: 'Inter', sans-serif; }
.font-mono { font-family: 'Space Grotesk', monospace; }

.text-primary { color: var(--primary); }
.text-secondary { color: var(--secondary); }
.text-tertiary { color: var(--tertiary); }
.text-error { color: var(--error); }
.text-on-surface { color: var(--on-surface); }
.text-on-surface-variant { color: var(--on-surface-variant); }
.text-on-primary { color: var(--on-primary); }

.bg-surface { background: var(--surface); }
.bg-surface-container { background: var(--surface-container); }
.bg-surface-container-low { background: var(--surface-container-low); }
.bg-surface-container-high { background: var(--surface-container-high); }
.bg-surface-container-lowest { background: var(--surface-container-lowest); }
.bg-surface-container-highest { background: var(--surface-container-highest); }
.bg-primary { background: var(--primary); }
.bg-primary-container { background: var(--primary-container); }
.bg-tertiary { background: var(--tertiary); }
.bg-tertiary-container { background: var(--tertiary-container); }
.bg-error { background: var(--error); }
.bg-error-container { background: var(--error-container); }

.border-outline { border-color: var(--outline); }
.border-outline-variant { border-color: var(--outline-variant); }

/* Layout */
.app-shell { display: flex; flex-direction: column; min-height: 100vh; }
.app-body { display: flex; flex: 1; overflow: hidden; }

/* Top navbar */
.topnav {
  position: sticky; top: 0; z-index: 50;
  display: flex; justify-content: space-between; align-items: center;
  height: 3.5rem; padding: 0 2rem;
  background: var(--surface);
  font-family: 'Space Grotesk', sans-serif;
  letter-spacing: -0.02em;
}
/* Admin panel accent */
:root { --admin-accent: #d97706; }
.dark { --admin-accent: #f59e0b; }
.admin-theme .sidebar-item.active { color: var(--admin-accent); }

.topnav-divider { height: 1px; background: var(--surface-container); }
.topnav-brand { font-size: 1.125rem; font-weight: 700; letter-spacing: -0.04em; }
.brand-m { color: #9f3d00; }
.topnav-nav { display: flex; gap: 1.5rem; }
.topnav-nav a {
  color: var(--secondary); text-decoration: none; font-size: 0.8125rem;
  padding-bottom: 0.25rem; transition: color 0.15s;
}
.topnav-nav a:hover, .topnav-nav a.active {
  color: var(--primary);
}
.topnav-nav a.active { border-bottom: 2px solid var(--primary); }

/* Sidebar */
.sidebar {
  width: 16rem; min-width: 16rem; position: sticky; top: 3.5rem;
  height: calc(100vh - 3.5rem); overflow-y: auto;
  background: var(--surface-container); padding: 1.5rem 1rem;
  font-size: 0.8125rem;
}
.sidebar-section-label {
  font-size: 0.625rem; text-transform: uppercase; letter-spacing: 0.1em;
  color: var(--secondary); font-weight: 700; padding: 0 0.5rem; margin-bottom: 0.5rem;
}
.sidebar a { text-decoration: none; color: inherit; }
.sidebar-item {
  display: flex; align-items: center; gap: 0.75rem;
  padding: 0.5rem 0.75rem; border-radius: 0.25rem; cursor: pointer;
  color: var(--secondary); transition: all 0.15s; text-decoration: none;
}
.sidebar-item:hover { background: var(--surface-container-low); }
.sidebar-item.active {
  background: var(--surface); color: var(--primary); font-weight: 600;
}
.sidebar-item .material-symbols-outlined { font-size: 1.125rem; }

.sidebar-node {
  display: flex; flex-direction: column; gap: 0.125rem;
  padding: 0.5rem 0.75rem; cursor: pointer; transition: background 0.15s;
}
.sidebar-node:hover { background: var(--surface-container-high); }
.sidebar-node.active {
  border-left: 2px solid var(--primary); background: var(--surface-container-low);
}
.sidebar-node-name { font-size: 0.75rem; font-weight: 500; color: var(--on-surface); }
.sidebar-node-meta { font-size: 0.625rem; color: var(--secondary); }

/* Status dots */
.status-dot {
  display: inline-block; width: 0.5rem; height: 0.5rem; border-radius: 50%;
}
.status-dot.online { background: var(--tertiary-container); }
.status-dot.offline { background: var(--surface-container-highest); }
.status-dot.error { background: var(--error); }

/* Main content */
.main-content {
  flex: 1; overflow-y: auto; padding: 2rem;
  height: calc(100vh - 3.5rem);
}
.node-sticky-header {
  position: sticky; top: -2rem; z-index: 10;
  background: var(--surface); padding-top: 2rem; padding-bottom: 0.5rem; margin-top: -2rem;
}

/* Cards */
.card {
  background: var(--surface-container-lowest); border-radius: 0.5rem;
  padding: 1.25rem;
}
.card-metric {
  background: var(--surface-container-lowest); border-radius: 0.5rem;
  padding: 1.25rem; display: flex; flex-direction: column;
  justify-content: space-between; min-height: 10rem;
}
.card-metric-label {
  font-size: 0.625rem; text-transform: uppercase; letter-spacing: 0.05em;
  color: var(--secondary); font-weight: 700;
}
.card-metric-value {
  font-family: 'Space Grotesk', sans-serif; font-size: 2rem; font-weight: 600;
  letter-spacing: -0.02em;
}
.card-metric-sub { font-size: 0.6875rem; color: var(--secondary); }

/* Grid layouts */
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1rem; }
.grid-8-4 { display: grid; grid-template-columns: 2fr 1fr; gap: 1.5rem; }

@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-8-4 { grid-template-columns: 1fr; }
  .sidebar { display: none; }
}

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.5rem;
  padding: 0.625rem 1.25rem; border-radius: 0.25rem; border: none;
  font-family: 'Space Grotesk', sans-serif; font-size: 0.8125rem; font-weight: 700;
  letter-spacing: 0.05em; text-transform: uppercase; cursor: pointer;
  transition: all 0.15s;
}
.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-container));
  color: var(--on-primary);
}
.btn-primary:hover { opacity: 0.9; }
.btn-primary:active { transform: scale(0.98); }
.btn-secondary {
  background: var(--surface-container-high); color: var(--primary);
}
.btn-secondary:hover { background: var(--surface-container-highest); }

/* Inputs */
.input-field {
  width: 100%; padding: 0.625rem 1rem; border-radius: 0.25rem; border: none;
  background: var(--surface-container-low); color: var(--on-surface);
  font-family: 'Inter', sans-serif; font-size: 0.875rem;
  transition: all 0.15s; outline: none;
}
.input-field:focus {
  background: var(--surface-container-lowest);
  box-shadow: 0 0 0 1px var(--primary);
}
.input-field::placeholder { color: var(--outline); }

.input-label {
  display: block; font-size: 0.625rem; text-transform: uppercase;
  letter-spacing: 0.1em; color: var(--outline); font-weight: 600;
  margin-bottom: 0.5rem;
}

/* Tables */
.data-table { width: 100%; text-align: left; font-size: 0.8125rem; }
.data-table th {
  font-size: 0.625rem; text-transform: uppercase; letter-spacing: 0.05em;
  color: var(--secondary); font-weight: 700; padding: 0.625rem 0.75rem;
  background: var(--surface-container-low);
}
.data-table td {
  padding: 0.625rem 0.75rem; border-bottom: 1px solid color-mix(in srgb, var(--outline-variant) 20%, transparent);
}
.data-table tr:hover td { background: var(--surface-container-low); }

/* Chips / badges */
.chip {
  display: inline-flex; align-items: center; gap: 0.25rem;
  padding: 0.125rem 0.5rem; border-radius: 0.75rem;
  font-size: 0.6875rem; font-weight: 600;
}
.chip-healthy { background: var(--tertiary-container); color: var(--on-tertiary-container); }
.chip-warning { background: var(--primary-fixed); color: var(--on-surface-variant); }
.chip-error { background: var(--error-container); color: var(--on-error-container); }

/* Time range tabs */
.time-tabs { display: flex; gap: 0.25rem; }
.time-tab {
  padding: 0.375rem 0.75rem; border-radius: 0.25rem; border: none;
  background: transparent; color: var(--secondary); font-size: 0.75rem;
  font-weight: 500; cursor: pointer; transition: all 0.15s;
}
.time-tab:hover { background: var(--surface-container-low); }
.time-tab.active { background: var(--surface-container-lowest); color: var(--primary); font-weight: 700; }

/* Node sub-tabs */
.sub-tabs { display: flex; gap: 0; border-bottom: 1px solid var(--surface-container); margin-bottom: 1.5rem; }
.sub-tab {
  padding: 0.5rem 1rem; font-size: 0.8125rem; color: var(--secondary);
  border-bottom: 2px solid transparent; cursor: pointer; transition: all 0.15s;
  background: none; border-top: none; border-left: none; border-right: none;
}
.sub-tab:hover { color: var(--on-surface); }
.sub-tab.active { color: var(--primary); border-bottom-color: var(--primary); font-weight: 600; }

/* Code blocks (config display) */
.code-block {
  background: var(--inverse-surface); color: var(--inverse-on-surface);
  font-family: 'Space Grotesk', monospace; font-size: 0.75rem;
  padding: 1rem; border-radius: 0.5rem; overflow-x: auto;
  position: relative; line-height: 1.6;
}
.code-block .copy-btn {
  position: absolute; top: 0.5rem; right: 0.5rem;
  background: var(--surface-container-highest); color: var(--inverse-on-surface);
  border: none; padding: 0.25rem 0.5rem; border-radius: 0.25rem;
  font-size: 0.625rem; cursor: pointer; opacity: 0.7;
}
.code-block .copy-btn:hover { opacity: 1; }

/* Page transitions */
.page { animation: fadeIn 0.15s ease; }
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }

/* Login page specific */
.login-page {
  min-height: 100vh; display: flex; flex-direction: column;
  justify-content: center; align-items: center;
  background: var(--surface);
}
.login-box { width: 100%; max-width: 340px; padding: 0 1.5rem; }
.login-brand {
  text-align: center; margin-bottom: 3rem;
}
.login-brand-icon {
  width: 3rem; height: 3rem; display: flex; align-items: center; justify-content: center;
  background: var(--surface-container-highest); border-radius: 0.25rem;
  margin: 0 auto 1rem;
}
.login-brand h1 {
  font-size: 1.25rem; font-weight: 700; letter-spacing: -0.04em;
  color: var(--on-background);
}
.login-brand p {
  font-size: 0.625rem; text-transform: uppercase; letter-spacing: 0.15em;
  color: var(--secondary); margin-top: 0.25rem;
}
.login-footer {
  margin-top: 4rem; text-align: center;
}
.login-footer-dot {
  display: inline-block; width: 6px; height: 6px; border-radius: 50%;
  background: var(--tertiary); animation: pulse 2s infinite;
}
@keyframes pulse { 0%, 100% { opacity: 0.4; } 50% { opacity: 1; } }
.login-footer-text {
  font-size: 0.5625rem; text-transform: uppercase; letter-spacing: 0.05em;
  color: var(--secondary); opacity: 0.6;
}

/* Landing page */
.landing-hero {
  text-align: center; padding: 6rem 2rem 4rem;
  max-width: 640px; margin: 0 auto;
}
.landing-hero h1 {
  font-size: 2.5rem; font-weight: 700; letter-spacing: -0.03em;
  margin-bottom: 1rem;
}
.landing-hero p {
  font-size: 1.125rem; color: var(--secondary); line-height: 1.6;
  margin-bottom: 2rem;
}
.landing-section {
  max-width: 960px; margin: 0 auto; padding: 3rem 2rem;
}
.landing-section h2 {
  font-size: 1.25rem; font-weight: 600; margin-bottom: 1.5rem;
  color: var(--on-surface-variant);
}
.landing-features {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem;
}
@media (max-width: 768px) { .landing-features { grid-template-columns: 1fr; } }
.landing-feature {
  padding: 1.5rem; background: var(--surface-container-lowest);
  border-radius: 0.5rem;
}
.landing-feature h3 { font-size: 0.875rem; font-weight: 600; margin-bottom: 0.5rem; }
.landing-feature p { font-size: 0.8125rem; color: var(--secondary); line-height: 1.5; }
.landing-download {
  background: var(--surface-container-lowest); border-radius: 0.5rem;
  padding: 2rem; margin-top: 1rem;
}

/* Empty state */
.empty-state {
  text-align: center; padding: 4rem 2rem; color: var(--secondary);
}
.empty-state .material-symbols-outlined { font-size: 3rem; opacity: 0.3; margin-bottom: 1rem; }
.empty-state p { font-size: 0.875rem; }

/* Modal */
.modal-backdrop {
  position: fixed; inset: 0; z-index: 1000;
  background: rgba(0, 0, 0, 0.6); backdrop-filter: blur(2px);
  display: flex; align-items: center; justify-content: center;
  padding: 2rem;
}
.modal-backdrop.hidden { display: none; }
.modal {
  background: var(--surface); border: 1px solid var(--surface-container);
  border-radius: 0.75rem; padding: 1.5rem; max-width: 28rem; width: 100%;
}
.modal h2 { font-size: 1rem; font-weight: 600; margin-bottom: 0.75rem; }
.modal p { font-size: 0.8125rem; color: var(--secondary); line-height: 1.6; }
.modal-actions { display: flex; justify-content: flex-end; gap: 0.5rem; margin-top: 1.25rem; }

/* Documentation layout */
.docs-shell { display: flex; flex-direction: column; min-height: 100vh; }
.docs-topbar {
  position: sticky; top: 0; z-index: 50;
  display: flex; justify-content: space-between; align-items: center;
  height: 3.5rem; padding: 0 2rem;
  background: var(--surface);
  border-bottom: 1px solid var(--surface-container);
  font-family: 'Space Grotesk', sans-serif;
}
.docs-body { display: flex; flex: 1; }
.docs-sidebar {
  width: 14rem; min-width: 14rem; position: sticky; top: 3.5rem;
  height: calc(100vh - 3.5rem); overflow-y: auto;
  background: var(--surface-container); padding: 1.5rem 0.75rem;
  display: flex; flex-direction: column; gap: 0.125rem;
}
.docs-toc-item {
  display: flex; align-items: center; gap: 0.5rem;
  padding: 0.5rem 0.75rem; border-radius: 0.25rem;
  font-size: 0.8125rem; color: var(--secondary);
  text-decoration: none; transition: all 0.15s;
}
.docs-toc-item:hover { background: var(--surface-container-high); color: var(--on-surface); }
.docs-toc-item.active { background: var(--surface); color: var(--primary); font-weight: 600; }
.docs-content {
  flex: 1; padding: 2.5rem 3rem; max-width: 54rem;
  overflow-y: auto; height: calc(100vh - 3.5rem);
}
@media (max-width: 768px) {
  .docs-sidebar { display: none; }
  .docs-content { padding: 1.5rem; }
}

/* Docs prose typography */
.prose h1 { font-size: 1.75rem; font-weight: 700; margin-bottom: 1rem; letter-spacing: -0.02em; }
.prose h2 { font-size: 1.25rem; font-weight: 600; margin-top: 2.5rem; margin-bottom: 0.75rem; color: var(--on-surface-variant); }
.prose h3 { font-size: 1rem; font-weight: 600; margin-top: 1.75rem; margin-bottom: 0.5rem; }
.prose h4 { font-size: 0.875rem; font-weight: 600; margin-top: 1.5rem; margin-bottom: 0.5rem; }
.prose p { font-size: 0.875rem; line-height: 1.7; margin-bottom: 1rem; color: var(--on-surface); }
.prose ul, .prose ol { font-size: 0.875rem; line-height: 1.7; margin-bottom: 1rem; padding-left: 1.5rem; }
.prose li { margin-bottom: 0.375rem; }
.prose li ul, .prose li ol { margin-top: 0.375rem; margin-bottom: 0; }
.prose strong { font-weight: 600; }
.prose a { color: var(--primary); text-decoration: none; }
.prose a:hover { text-decoration: underline; }
.prose code {
  font-family: 'Space Grotesk', monospace; font-size: 0.8125rem;
  background: var(--surface-container); padding: 0.125rem 0.375rem;
  border-radius: 0.25rem;
}
.prose pre {
  background: var(--inverse-surface); color: var(--inverse-on-surface);
  font-family: 'Space Grotesk', monospace; font-size: 0.75rem;
  padding: 1.25rem; border-radius: 0.5rem; overflow-x: auto;
  line-height: 1.6; margin-bottom: 1.5rem;
}
.prose pre code {
  background: none; padding: 0; font-size: inherit;
  color: inherit;
}
.prose table {
  width: 100%; font-size: 0.8125rem; margin-bottom: 1.5rem;
  border-collapse: collapse;
}
.prose th {
  text-align: left; font-size: 0.6875rem; text-transform: uppercase;
  letter-spacing: 0.05em; color: var(--secondary); font-weight: 700;
  padding: 0.5rem 0.75rem; background: var(--surface-container-low);
}
.prose td {
  padding: 0.5rem 0.75rem;
  border-bottom: 1px solid color-mix(in srgb, var(--outline-variant) 20%, transparent);
}
.prose td code { font-size: 0.75rem; }

/* Docs cards grid (overview page) */
.docs-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem;
  margin: 1.5rem 0 2rem;
}
@media (max-width: 768px) { .docs-grid { grid-template-columns: 1fr; } }
.docs-card {
  display: flex; flex-direction: column; align-items: center; gap: 0.5rem;
  padding: 1.5rem; background: var(--surface-container-lowest);
  border-radius: 0.5rem; text-decoration: none; text-align: center;
  transition: background 0.15s;
}
.docs-card:hover { background: var(--surface-container-low); }
.docs-card h3 { font-size: 0.8125rem; font-weight: 600; color: var(--on-surface); margin: 0; }

/* Docs callouts */
.docs-callout {
  padding: 1rem 1.25rem; border-radius: 0.5rem; margin-bottom: 1.5rem;
  font-size: 0.8125rem; line-height: 1.6;
  background: var(--tertiary-fixed); color: var(--on-surface);
  border-left: 3px solid var(--tertiary);
}
.docs-callout-warning {
  background: var(--primary-fixed); border-left-color: var(--primary);
}

/* Technical grid background */
.technical-grid {
  position: fixed; inset: 0; pointer-events: none; z-index: -1; opacity: 0.05;
  background-image: radial-gradient(circle at 2px 2px, var(--outline-variant) 1px, transparent 0);
  background-size: 40px 40px;
}

/* Scrollbar styling */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--surface-container-high); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--outline); }