@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap');

/* ═══════════════════════════════════
   CSS VARIABLES
   ═══════════════════════════════════ */

:root {
  /* Primary palette */
  --color-ink: #1C1F2E;
  --color-ink-secondary: #3D4257;
  --color-ink-tertiary: #6B7080;
  --color-signal: #E8A020;
  --color-signal-light: #FDF3E0;

  /* Background palette */
  --color-background: #F7F6F2;
  --color-background-secondary: #EFEDE8;
  --color-background-grid: #E8E5DE;
  --color-surface: #FFFFFF;

  /* Semantic colors */
  --color-positive: #2D6A4F;
  --color-positive-bg: #EBF5EF;
  --color-negative: #C0392B;
  --color-negative-bg: #FDECEA;
  --color-warning: #E8A020;
  --color-warning-bg: #FDF3E0;
  --color-neutral: #6B7080;

  /* Borders */
  --color-border: #D4D0C8;
  --color-border-secondary: #E8E5DE;

  /* Typography */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  /* Type scale */
  --text-xs: 11px;
  --text-sm: 13px;
  --text-base: 15px;
  --text-lg: 17px;
  --text-xl: 21px;
  --text-2xl: 27px;
  --text-3xl: 35px;
  --text-4xl: 45px;

  /* Font weights */
  --weight-regular: 400;
  --weight-medium: 500;
  --weight-semibold: 600;
  --weight-bold: 700;

  /* Spacing */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --space-10: 40px;
  --space-12: 48px;
  --space-16: 64px;

  /* Transitions */
  --transition-fast: 100ms ease;
  --transition-base: 200ms ease;
  --transition-slow: 300ms ease;
}


/* ═══════════════════════════════════
   GRID BACKGROUND
   ═══════════════════════════════════ */

body.ds-grid {
  background-color: var(--color-background);
  background-image:
    linear-gradient(rgba(160, 154, 142, 0.5) 1px, transparent 1px),
    linear-gradient(90deg, rgba(160, 154, 142, 0.5) 1px, transparent 1px),
    linear-gradient(var(--color-background-grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--color-background-grid) 1px, transparent 1px);
  background-size:
    120px 120px,
    120px 120px,
    24px 24px,
    24px 24px;
  background-attachment: fixed;
}

.grid-demo {
  position: relative;
  overflow: hidden;
  background-color: var(--color-background);
  background-image:
    linear-gradient(rgba(160, 154, 142, 0.5) 1px, transparent 1px),
    linear-gradient(90deg, rgba(160, 154, 142, 0.5) 1px, transparent 1px),
    linear-gradient(var(--color-background-grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--color-background-grid) 1px, transparent 1px);
  background-size:
    120px 120px,
    120px 120px,
    24px 24px,
    24px 24px;
}


/* ═══════════════════════════════════
   NAVIGATION BAR
   ═══════════════════════════════════ */

.ds-nav {
  background: var(--color-ink);
  margin: 0 -20px;
  padding: 0 20px;
  display: flex;
  align-items: center;
  gap: 0;
  position: relative;
  z-index: 10;
}

.ds-nav a {
  display: inline-block;
  padding: 12px 16px;
  color: rgba(255, 255, 255, 0.7);
  text-decoration: none;
  font-family: var(--font-primary);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  border-bottom: 2px solid transparent;
  transition: color var(--transition-fast), border-color var(--transition-fast);
}

.ds-nav a:hover {
  color: #fff;
}

.ds-nav a.active {
  color: #fff;
  border-bottom-color: var(--color-signal);
}


/* ═══════════════════════════════════
   UTILITY CLASSES
   ═══════════════════════════════════ */

.mono { font-family: var(--font-mono); }
.positive { color: var(--color-positive); }
.negative { color: var(--color-negative); }


/* ═══════════════════════════════════
   ICONS (Lucide)
   ═══════════════════════════════════ */

.icon, [data-lucide] {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 16px;
  height: 16px;
  stroke: currentColor;
  stroke-width: 2;
  fill: none;
  flex-shrink: 0;
  vertical-align: middle;
  position: relative;
  top: -0.05em;
}

.icon-sm, [data-lucide].icon-sm {
  width: 14px;
  height: 14px;
  top: -0.05em;
}

.icon-lg, [data-lucide].icon-lg {
  width: 20px;
  height: 20px;
  top: -0.05em;
}

/* Icons in buttons */
button [data-lucide],
.btn-primary [data-lucide],
.btn-secondary [data-lucide],
.btn-signal [data-lucide] {
  vertical-align: middle;
  top: -0.05em;
}

/* Icons in table cells */
td [data-lucide],
th [data-lucide] {
  vertical-align: middle;
  top: -0.05em;
}

/* Icons in badges */
.badge [data-lucide],
.status-badge [data-lucide] {
  vertical-align: middle;
  top: -0.05em;
}

/* Icons in alerts — flex layout, no top offset needed */
.alert-critical [data-lucide],
.alert-warning [data-lucide],
.alert-info [data-lucide],
.alert-success [data-lucide] {
  flex-shrink: 0;
  margin-top: 1px;
  top: 0;
}

/* Icons in headings and strong */
h1 [data-lucide], h2 [data-lucide],
h3 [data-lucide], strong [data-lucide] {
  vertical-align: middle;
  top: -0.08em;
}


/* ═══════════════════════════════════
   HELP TOOLTIPS (body-level, z-index 9999)
   ═══════════════════════════════════ */

.help-tooltip {
  position: absolute;
  z-index: 9999;
  width: 320px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 6px;
  box-shadow: 0 4px 16px rgba(28, 31, 46, 0.15);
  padding: var(--space-4);
  font-family: var(--font-primary);
  font-size: var(--text-sm);
  line-height: 1.5;
  color: var(--color-ink-secondary);
}

.help-tooltip-title {
  font-weight: var(--weight-bold);
  font-size: var(--text-base);
  margin-bottom: var(--space-3);
  padding-bottom: var(--space-2);
  border-bottom: 1px solid var(--color-border-secondary);
  color: var(--color-ink);
}

.help-tooltip-section {
  margin-top: var(--space-3);
}

.help-tooltip-label {
  display: block;
  font-weight: var(--weight-semibold);
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-ink-tertiary);
  margin-bottom: var(--space-1);
}

.help-tooltip-close {
  position: absolute;
  top: var(--space-2);
  right: var(--space-2);
  background: none;
  border: none;
  font-size: 16px;
  color: var(--color-ink-tertiary);
  cursor: pointer;
  padding: 2px 6px;
  border-radius: 3px;
  line-height: 1;
}

.help-tooltip-close:hover {
  background: var(--color-background-secondary);
  color: var(--color-ink);
}


/* ═══════════════════════════════════
   CARDS
   ═══════════════════════════════════ */

.ds-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 6px;
  box-shadow: 0 1px 3px rgba(28, 31, 46, 0.06);
  padding: var(--space-6);
  position: relative;
  z-index: 1;
}


/* ═══════════════════════════════════
   KPI CARDS
   ═══════════════════════════════════ */

.kpi-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 6px;
  box-shadow: 0 1px 3px rgba(28, 31, 46, 0.06);
  padding: var(--space-6);
  text-align: center;
  position: relative;
  z-index: 1;
}

.kpi-label {
  font-family: var(--font-primary);
  font-size: var(--text-xs);
  font-weight: var(--weight-medium);
  color: var(--color-ink-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-2);
}

.kpi-value {
  font-family: var(--font-mono);
  font-size: var(--text-3xl);
  font-weight: var(--weight-semibold);
  color: var(--color-ink);
  line-height: 1.1;
}

.kpi-change {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  margin-top: var(--space-2);
}

.kpi-change.positive { color: var(--color-positive); }
.kpi-change.negative { color: var(--color-negative); }

.kpi-subtext {
  font-family: var(--font-primary);
  font-size: var(--text-xs);
  color: var(--color-ink-tertiary);
  margin-top: var(--space-1);
}


/* ═══════════════════════════════════
   BUTTONS
   ═══════════════════════════════════ */

.btn-primary,
.btn-secondary,
.btn-signal {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  font-family: var(--font-primary);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  padding: var(--space-2) var(--space-5);
  border-radius: 4px;
  cursor: pointer;
  border: none;
  transition: background var(--transition-fast), color var(--transition-fast);
  text-decoration: none;
  line-height: 1.4;
}

.btn-primary {
  background: var(--color-ink);
  color: #fff;
}
.btn-primary:hover {
  background: var(--color-ink-secondary);
}

.btn-secondary {
  background: transparent;
  color: var(--color-ink-secondary);
  border: 1px solid var(--color-border);
}
.btn-secondary:hover {
  background: var(--color-background-secondary);
  color: var(--color-ink);
}

.btn-signal {
  background: var(--color-signal);
  color: var(--color-ink);
}
.btn-signal:hover {
  background: #D4900E;
}


/* ═══════════════════════════════════
   BADGES
   ═══════════════════════════════════ */

.badge-high,
.badge-medium,
.badge-low,
.badge-warning,
.badge-estimated {
  display: inline-block;
  font-family: var(--font-primary);
  font-size: var(--text-xs);
  font-weight: var(--weight-medium);
  text-transform: uppercase;
  padding: 2px 8px;
  border-radius: 3px;
  letter-spacing: 0.02em;
}

.badge-high {
  background: #EBF5EF;
  color: #2D6A4F;
}
.badge-medium {
  background: #EBF4FF;
  color: #2563EB;
}
.badge-low {
  background: #FDECEA;
  color: #C0392B;
}
.badge-warning {
  background: var(--color-warning-bg);
  color: var(--color-warning);
}
.badge-estimated {
  background: #F3F0FF;
  color: #6B4FBB;
}


/* ═══════════════════════════════════
   ALERTS / BANNERS
   ═══════════════════════════════════ */

.alert-critical,
.alert-warning,
.alert-info,
.alert-success {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-4);
  border-radius: 6px;
  font-family: var(--font-primary);
  font-size: var(--text-sm);
  line-height: 1.6;
  position: relative;
  z-index: 1;
}

.alert-critical svg,
.alert-warning svg,
.alert-info svg,
.alert-success svg,
.alert-critical > [data-lucide],
.alert-warning > [data-lucide],
.alert-info > [data-lucide],
.alert-success > [data-lucide] {
  flex-shrink: 0;
  margin-top: 1px;
  top: 0;
}

.alert-critical {
  background: var(--color-negative-bg);
  color: var(--color-negative);
  border: 1px solid rgba(192, 57, 43, 0.2);
}
.alert-warning {
  background: var(--color-signal-light);
  color: #92600A;
  border: 1px solid rgba(232, 160, 32, 0.3);
}
.alert-info {
  background: #EBF4FF;
  color: #1E40AF;
  border: 1px solid rgba(37, 99, 235, 0.2);
}
.alert-success {
  background: var(--color-positive-bg);
  color: var(--color-positive);
  border: 1px solid rgba(45, 106, 79, 0.2);
}

.alert-critical strong,
.alert-warning strong,
.alert-info strong,
.alert-success strong {
  font-weight: var(--weight-semibold);
}


/* ═══════════════════════════════════
   DATA TABLES
   ═══════════════════════════════════ */

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--font-primary);
  font-size: var(--text-sm);
  background: var(--color-surface);
}

.data-table thead th {
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-ink-tertiary);
  background: var(--color-background-secondary);
  padding: var(--space-3) var(--space-4);
  text-align: left;
  border-bottom: 1px solid var(--color-border);
}

.data-table thead th.num {
  text-align: right;
}

.data-table tbody td {
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--color-border-secondary);
  color: var(--color-ink);
}

.data-table tbody td.num {
  text-align: right;
  font-family: var(--font-mono);
  font-weight: var(--weight-regular);
}

.data-table tbody tr:hover {
  background: var(--color-background-secondary);
}

.data-table tbody td.positive {
  color: var(--color-positive);
}

.data-table tbody td.negative {
  color: var(--color-negative);
}

.data-table tbody td.estimated {
  color: var(--color-neutral);
  font-style: italic;
}


/* ═══════════════════════════════════
   RANGE INPUTS / SLIDERS
   ═══════════════════════════════════ */

.slider-wrapper {
  margin-bottom: var(--space-4);
}

.slider-label {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  font-family: var(--font-primary);
  font-size: var(--text-sm);
  color: var(--color-ink-secondary);
  margin-bottom: var(--space-2);
}

.slider-value {
  font-family: var(--font-mono);
  font-weight: var(--weight-semibold);
  color: var(--color-ink);
  font-size: var(--text-sm);
}

/* Track reset */
input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 6px;
  background: var(--color-background-secondary);
  border: 1px solid var(--color-border);
  border-radius: 3px;
  outline: none;
  cursor: pointer;
  background-image: linear-gradient(var(--color-ink), var(--color-ink));
  background-size: var(--fill-percent, 50%) 100%;
  background-repeat: no-repeat;
}

/* Thumb — WebKit */
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--color-surface);
  border: 2px solid var(--color-ink);
  box-shadow: 0 1px 3px rgba(28, 31, 46, 0.15);
  cursor: pointer;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

input[type="range"]::-webkit-slider-thumb:hover {
  border-color: var(--color-signal);
  box-shadow: 0 0 0 3px rgba(232, 160, 32, 0.2);
}

/* Thumb — Firefox */
input[type="range"]::-moz-range-thumb {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--color-surface);
  border: 2px solid var(--color-ink);
  box-shadow: 0 1px 3px rgba(28, 31, 46, 0.15);
  cursor: pointer;
}

input[type="range"]::-moz-range-thumb:hover {
  border-color: var(--color-signal);
  box-shadow: 0 0 0 3px rgba(232, 160, 32, 0.2);
}

/* Firefox track fill */
input[type="range"]::-moz-range-progress {
  background: var(--color-ink);
  height: 6px;
  border-radius: 3px 0 0 3px;
}

input[type="range"]:focus {
  outline: none;
}

input[type="range"]:focus::-webkit-slider-thumb {
  box-shadow: 0 0 0 3px rgba(28, 31, 46, 0.15);
}


/* ═══════════════════════════════════
   NAVIGATION (main-nav)
   ═══════════════════════════════════ */

.main-nav {
  background: var(--color-ink);
  padding: 0 var(--space-4);
  display: flex;
  align-items: center;
  gap: 0;
  position: sticky;
  top: 0;
  z-index: 100;
  overflow-x: auto;
  overflow-y: hidden;
}

.main-nav a {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 12px 12px;
  color: rgba(255, 255, 255, 0.7);
  text-decoration: none;
  font-family: var(--font-primary);
  font-size: var(--text-sm);
  white-space: nowrap;
  font-weight: var(--weight-medium);
  border-bottom: 2px solid transparent;
  transition: color var(--transition-fast), border-color var(--transition-fast);
}

.main-nav a:hover {
  color: #fff;
}

.main-nav a.active {
  color: #fff;
  border-bottom-color: var(--color-signal);
}

.main-nav .nav-settings {
  margin-left: auto;
  padding: 12px 14px;
}

.main-nav .nav-settings svg {
  opacity: 0.7;
  transition: opacity var(--transition-fast);
}

.main-nav .nav-settings:hover svg {
  opacity: 1;
}

/* Tenant switcher dropdown in navbar */
.tenant-switcher {
  margin-left: auto;
  flex-shrink: 0;
}

.tenant-select {
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 3px 6px;
  border-radius: 4px;
  border: 1px solid rgba(255,255,255,0.25);
  background: rgba(255,255,255,0.1);
  color: #fff;
  cursor: pointer;
  outline: none;
}

.tenant-select:hover,
.tenant-select:focus {
  border-color: var(--color-signal);
  background: rgba(255,255,255,0.15);
}

.tenant-select option {
  background: var(--color-ink);
  color: #fff;
}


/* ═══════════════════════════════════
   PAGE CONTENT WRAPPER
   ═══════════════════════════════════ */

.page-content {
  max-width: 960px;
  margin: 0 auto;
  padding: var(--space-10) var(--space-5);
}

.page-content.wide {
  max-width: 1400px;
}


/* ═══════════════════════════════════
   CHART TOOLTIP (external HTML)
   ═══════════════════════════════════ */

#chartjs-tooltip {
  position: absolute;
  z-index: 9998;
  pointer-events: none;
  transition: opacity 100ms ease;
  opacity: 0;
}

.chart-tooltip {
  background: var(--color-ink);
  color: #fff;
  padding: var(--space-2) var(--space-3);
  border-radius: 4px;
  font-size: 12px;
  font-family: var(--font-mono);
  white-space: nowrap;
  box-shadow: 0 2px 8px rgba(28, 31, 46, 0.25);
  transform: translateY(-100%);
}

.chart-tooltip-title {
  font-weight: 600;
  margin-bottom: 4px;
  font-family: var(--font-primary);
  font-size: 11px;
  opacity: 0.75;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.chart-tooltip-row {
  display: flex;
  align-items: center;
  gap: 6px;
  line-height: 1.5;
}

.chart-tooltip-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}


/* ═══════════════════════════════════
   COLLAPSIBLE SECTIONS
   ═══════════════════════════════════ */

.section-toggle {
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  user-select: none;
}

.section-toggle:hover h2,
.section-toggle:hover h3 {
  color: var(--color-ink-secondary);
}

.toggle-icon {
  transition: transform 200ms ease;
  color: var(--color-ink-tertiary);
}

.toggle-icon.open {
  transform: rotate(180deg);
}

.collapsible-section {
  overflow: hidden;
  transition: max-height 200ms ease;
}

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  padding: var(--space-4) 0;
  border-bottom: 1px solid var(--color-border);
  user-select: none;
}

.section-header:hover .section-title {
  color: var(--color-ink-secondary);
}

.section-header .toggle-icon {
  transition: transform 200ms ease;
  color: var(--color-ink-tertiary);
}

.section-header.open .toggle-icon {
  transform: rotate(180deg);
}

/* Text link button */
.text-link {
  background: none;
  border: none;
  color: var(--color-ink-secondary);
  font-size: 13px;
  cursor: pointer;
  padding: 0;
  text-decoration: underline;
  text-decoration-style: dotted;
}

.text-link:hover {
  color: var(--color-ink);
}

/* Load more container */
.load-more-container {
  text-align: center;
  padding: var(--space-4) 0;
}