/* === JOYFUL BRUTALIST MINIMALISM === */

:root {
  --bg: #fafafa;
  --fg: #1a1a1a;
  --gray-1: #f5f5f5;
  --gray-2: #e5e5e5;
  --gray-3: #d4d4d4;
  --gray-4: #a3a3a3;
  --gray-5: #737373;
  --gray-6: #525252;
  --gray-7: #404040;
  --border: 2px solid var(--fg);
  --font-mono: "SF Mono", "Fira Code", "JetBrains Mono", "Cascadia Code", monospace;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.6;
  color: var(--fg);
  background: var(--bg);
  max-width: 960px;
  margin: 0 auto;
  padding: 2rem 1rem;
}

/* === TYPOGRAPHY === */

h1 {
  font-size: 1.5rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

h2 {
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

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

a:hover {
  background: var(--fg);
  color: var(--bg);
}

small, .meta {
  font-size: 0.8rem;
  color: var(--gray-5);
}

/* === CTA === */

.cta {
  background: var(--fg);
  color: var(--bg);
  text-align: center;
  font-size: 0.85rem;
}

.cta .section-body {
  padding: 0.6rem 1rem;
}

.cta-link {
  color: var(--bg);
  font-weight: 700;
  text-decoration: underline;
}

.cta-link:hover {
  background: var(--bg);
  color: var(--fg);
}

/* === INTRO === */

#intro {
  border: none;
  margin-bottom: 0;
}

#intro .section-body {
  padding: 0.75rem 0;
}

#intro p {
  font-size: 0.9rem;
  color: var(--gray-6);
  margin-bottom: 0.5rem;
  line-height: 1.7;
}

#intro p:last-child {
  margin-bottom: 0;
}

/* === LAYOUT SECTIONS === */

header {
  border: var(--border);
  padding: 1.5rem;
  margin-bottom: 1.5rem;
}

header .subtitle {
  font-size: 0.85rem;
  color: var(--gray-5);
  margin-top: 0.25rem;
}

section {
  border: var(--border);
  margin-bottom: 1.5rem;
}

.section-header {
  background: var(--fg);
  color: var(--bg);
  padding: 0.5rem 1rem;
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.section-body {
  padding: 1rem;
}

/* === CHARTS === */

.chart-container {
  width: 100%;
  overflow-x: auto;
}

#chart-heatmap {
  overflow: visible;
}

.chart-container svg {
  font-family: var(--font-mono) !important;
}

.chart-note {
  font-size: 0.75rem;
  color: var(--gray-5);
  margin-top: 0.5rem;
  padding-top: 0.5rem;
  border-top: 1px solid var(--gray-2);
}

/* === STATUS BAR === */

.sticky-controls {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--bg);
}

.status-bar {
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
  font-size: 0.9rem;
}

.status-bar .timestamp {
  font-weight: 700;
}

/* === CONTROLS === */

select {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  padding: 0.4rem 0.6rem;
  border: var(--border);
  background: var(--bg);
  color: var(--fg);
  cursor: pointer;
  appearance: none;
  -webkit-appearance: none;
  padding-right: 2rem;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath d='M2 4l4 4 4-4' fill='none' stroke='%231a1a1a' stroke-width='2'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.5rem center;
}

select:hover {
  background-color: var(--gray-1);
}

label {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* === METHODOLOGY / FOOTER === */

footer {
  border: var(--border);
  margin-top: 0;
}

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

footer li {
  padding: 0.3rem 0;
  font-size: 0.85rem;
  line-height: 1.6;
}

footer li::before {
  content: "→ ";
}

.glossary {
  display: grid;
  gap: 0;
}

.glossary dt {
  font-weight: 700;
  font-size: 0.85rem;
  margin-top: 0.75rem;
}

.glossary dt:first-child {
  margin-top: 0;
}

.glossary dd {
  font-size: 0.85rem;
  color: var(--gray-6);
  line-height: 1.6;
  margin-left: 0;
}

.footer-credit {
  text-align: center;
  font-size: 0.8rem;
  color: var(--gray-5);
  border-top: 1px solid var(--gray-2);
  padding: 0.75rem 1rem;
}

/* === MAP ROW === */

.map-row {
  display: flex;
  gap: 0;
}

.map-geo {
  flex: 3;
  min-width: 0;
  border-right: 1px solid var(--gray-2);
  padding-right: 0.75rem;
}

.map-strip {
  flex: 1;
  min-width: 0;
  padding-left: 0.75rem;
}

@media (max-width: 600px) {
  .map-row {
    flex-direction: column;
  }

  .map-geo {
    border-right: none;
    border-bottom: 1px solid var(--gray-2);
    padding-right: 0;
    padding-bottom: 0.75rem;
  }

  .map-strip {
    padding-left: 0;
    padding-top: 0.75rem;
  }
}

/* === FRESHNESS LEGEND === */

.freshness-legend {
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
  font-size: 0.8rem;
}

.freshness-legend span {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.swatch {
  display: inline-block;
  width: 12px;
  height: 12px;
  border: 1px solid var(--gray-4);
}

/* === TAB BAR === */

.tab-bar {
  display: flex;
  gap: 0;
  margin-bottom: 1rem;
  border: var(--border);
}

.tab-btn {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.5rem 1rem;
  border: none;
  border-right: var(--border);
  background: var(--bg);
  color: var(--fg);
  cursor: pointer;
}

.tab-btn:last-child {
  border-right: none;
}

.tab-btn:hover {
  background: var(--gray-2);
}

.tab-btn.active {
  background: var(--fg);
  color: var(--bg);
}

/* === LOADING === */

.loading {
  color: var(--gray-4);
  font-style: italic;
}

/* === RESPONSIVE === */

@media (max-width: 600px) {
  body {
    padding: 1rem 0.5rem;
    font-size: 13px;
  }

  h1 {
    font-size: 1.2rem;
  }

  header {
    padding: 1rem;
  }

  .section-body {
    padding: 0.75rem;
  }

  .status-bar {
    flex-direction: column;
    gap: 0.25rem;
  }
}