/* ----- Design tokens ----- */
:root {
  /* Palette */
  --color-bg: #fafaf7;
  --color-bg-elevated: #ffffff;
  --color-text: #15181a;
  --color-text-muted: #5a6168;
  --color-border: #e6e3dc;
  --color-accent: #006a4e;
  --color-accent-strong: #00543e;
  --color-accent-soft: #e3f1ec;
  --color-warn: #c25e00;

  /* Typography */
  --font-sans: "Inter", ui-sans-serif, system-ui, -apple-system,
    "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  /* Scale */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-12: 3rem;
  --space-16: 4rem;

  --radius: 12px;
  --radius-sm: 6px;

  --shadow-sm: 0 1px 2px rgba(15, 20, 22, 0.04),
    0 1px 1px rgba(15, 20, 22, 0.03);
  --shadow-md: 0 6px 16px rgba(15, 20, 22, 0.06),
    0 2px 4px rgba(15, 20, 22, 0.04);

  /* Chart palette (used by chart configs via getComputedStyle) */
  --chart-1: #006a4e;
  --chart-2: #d97706;
  --chart-3: #2563eb;
  --chart-4: #be185d;
  --chart-5: #65a30d;
  --chart-6: #7c3aed;
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-bg: #0f1113;
    --color-bg-elevated: #181b1e;
    --color-text: #e8eaec;
    --color-text-muted: #9aa1a7;
    --color-border: #262a2e;
    --color-accent: #3ec795;
    --color-accent-strong: #5ad6a8;
    --color-accent-soft: #14302a;
  }
}

/* ----- Reset ----- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
  text-rendering: optimizeLegibility;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 17px;
  line-height: 1.55;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

img,
svg {
  max-width: 100%;
  display: block;
}

a {
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 2px;
  text-decoration-thickness: 1px;
}

a:hover {
  color: var(--color-accent-strong);
}

h1,
h2,
h3 {
  line-height: 1.15;
  letter-spacing: -0.01em;
  margin: 0 0 var(--space-4);
}

p {
  margin: 0 0 var(--space-4);
}

ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

/* ----- Layout ----- */
.container {
  width: 100%;
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 var(--space-6);
}

@media (min-width: 720px) {
  .container {
    padding: 0 var(--space-8);
  }
}

/* ----- Header ----- */
.site-header {
  border-bottom: 1px solid var(--color-border);
  background: var(--color-bg);
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: saturate(140%) blur(8px);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  color: var(--color-text);
  font-weight: 600;
}

.brand-mark {
  display: inline-grid;
  place-items: center;
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: var(--color-accent);
  color: #fff;
  font-weight: 700;
  font-size: 18px;
}

.brand-name {
  font-size: 1.05rem;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}

.site-nav a {
  color: var(--color-text-muted);
  text-decoration: none;
  font-size: 0.95rem;
}

.site-nav a:hover {
  color: var(--color-text);
}

/* ----- Hero ----- */
.hero {
  padding: var(--space-16) 0 var(--space-12);
}

.hero-eyebrow {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-4);
}

.hero-title {
  font-size: clamp(2.25rem, 5vw + 1rem, 3.75rem);
  font-weight: 700;
  margin-bottom: var(--space-6);
  max-width: 18ch;
}

.hero-accent {
  color: var(--color-accent);
}

.hero-lede {
  font-size: 1.15rem;
  color: var(--color-text-muted);
  max-width: 60ch;
}

.hero-status {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  margin-top: var(--space-6);
  padding: var(--space-2) var(--space-4);
  border-radius: 999px;
  background: var(--color-accent-soft);
  color: var(--color-accent-strong);
  font-size: 0.9rem;
  font-weight: 500;
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-accent);
  box-shadow: 0 0 0 4px rgba(0, 106, 78, 0.15);
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

@media (prefers-reduced-motion: reduce) {
  .status-dot { animation: none; }
}

/* ----- Topics ----- */
.topics {
  padding: var(--space-12) 0 var(--space-16);
}

.topics h2 {
  font-size: clamp(1.5rem, 2vw + 1rem, 2rem);
  margin-bottom: var(--space-8);
}

.topic-grid {
  display: grid;
  gap: var(--space-6);
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.topic-card {
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--space-6);
  box-shadow: var(--shadow-sm);
  transition: transform 0.15s ease, box-shadow 0.15s ease, border-color 0.15s ease;
}

.topic-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-accent);
}

.topic-card h3 {
  font-size: 1.15rem;
  margin-bottom: var(--space-2);
}

.topic-card p {
  color: var(--color-text-muted);
  font-size: 0.97rem;
  margin-bottom: var(--space-4);
}

.topic-status {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-warn);
}

.topic-status.live { color: var(--color-accent); }

.topic-link {
  display: block;
  color: inherit;
  text-decoration: none;
}

.topic-link h3 { color: var(--color-text); }

@media (prefers-reduced-motion: reduce) {
  .topic-card { transition: none; }
  .topic-card:hover { transform: none; }
}

/* ----- Footer ----- */
.site-footer {
  border-top: 1px solid var(--color-border);
  padding: var(--space-8) 0;
  color: var(--color-text-muted);
  font-size: 0.92rem;
}

.footer-inner {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.footer-inner p { margin: 0; }

@media (min-width: 720px) {
  .footer-inner {
    flex-direction: row;
    justify-content: space-between;
  }
}

/* ----- Topic page hero ----- */
.topic-hero {
  padding: var(--space-12) 0 var(--space-8);
  border-bottom: 1px solid var(--color-border);
}

.month-picker {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  margin-top: var(--space-6);
  padding: var(--space-2) var(--space-4);
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  font-size: 0.95rem;
}

.month-picker label {
  color: var(--color-text-muted);
}

.month-picker select {
  font: inherit;
  color: var(--color-text);
  background: transparent;
  border: 0;
  padding: 2px 4px;
  cursor: pointer;
}

/* ----- Stat grid ----- */
.stat-grid {
  display: grid;
  gap: var(--space-4);
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  padding-top: var(--space-8);
  padding-bottom: var(--space-4);
}

.stat {
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--space-4) var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  box-shadow: var(--shadow-sm);
}

.stat-label {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  font-weight: 500;
}

.stat-value {
  font-size: 1.75rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.01em;
}

/* ----- Chart sections ----- */
.chart-section {
  padding: var(--space-8) var(--space-6);
  margin-top: var(--space-6);
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}

.chart-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.chart-section h2 {
  font-size: 1.35rem;
  margin: 0;
}

.chart-caption {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  margin: var(--space-2) 0 var(--space-6);
}

.chart-canvas-wrap {
  position: relative;
  height: 360px;
}

.chart-canvas-wrap.chart-tall {
  height: 520px;
}

.btn-link {
  background: transparent;
  border: 0;
  color: var(--color-accent);
  font: inherit;
  cursor: pointer;
  padding: var(--space-2) 0;
  text-decoration: underline;
  text-underline-offset: 2px;
}

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

/* ----- Capital vs revenue ----- */
.cap-rev-bar {
  display: flex;
  height: 16px;
  border-radius: 999px;
  overflow: hidden;
  background: var(--color-border);
}

.cap-rev-bar span { display: block; height: 100%; }

.cap-rev-legend {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-6);
  margin-top: var(--space-4);
  font-size: 0.95rem;
}

.cap-rev-legend strong { font-variant-numeric: tabular-nums; }

.cap-rev-legend .dot {
  display: inline-block;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  margin-right: var(--space-2);
  vertical-align: middle;
}

.muted { color: var(--color-text-muted); font-weight: 400; }

/* ----- Tables ----- */
.table-wrap {
  overflow-x: auto;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
}

.data-table th,
.data-table td {
  text-align: left;
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--color-border);
}

.data-table th {
  font-weight: 600;
  color: var(--color-text-muted);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.data-table td.num,
.data-table th.num {
  text-align: right;
  font-variant-numeric: tabular-nums;
}

.data-table tr:last-child td { border-bottom: 0; }

/* ----- Source block ----- */
.source-block {
  padding-top: var(--space-8);
  padding-bottom: var(--space-12);
  font-size: 0.95rem;
}

.source-block .muted {
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

/* ----- Utilities ----- */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}