/* Basic, clean “bones” styling. Tweak freely. */
:root {
  --bg: #0b0d12;
  --panel: #121622;
  --text: #e9ecf1;
  --muted: #b6bed0;
  --border: rgba(255, 255, 255, 0.10);
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
  --radius: 14px;
  --pad: 18px;
  --max: 1050px;
  --font: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  --mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
}

* { box-sizing: border-box; }

html, body {
  height: 100%;
  margin: 0;
  font-family: var(--font);
  background: radial-gradient(1200px 800px at 20% 0%, #18213a 0%, var(--bg) 45%);
  color: var(--text);
}

.container {
  width: min(var(--max), calc(100% - 32px));
  margin: 0 auto;
}

.site-header {
  padding: 34px 0 10px;
}

.site-header h1 {
  margin: 0 0 8px;
  font-size: 2rem;
  letter-spacing: -0.02em;
}

.lede {
  margin: 0;
  color: var(--muted);
  max-width: 70ch;
}

.tabs {
  margin: 18px 0 44px;
}

.tablist {
  display: flex;
  gap: 10px;
  border-bottom: 1px solid var(--border);
  padding-bottom: 12px;
  margin-bottom: 18px;
}

.tab {
  appearance: none;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--muted);
  padding: 10px 14px;
  border-radius: 999px;
  cursor: pointer;
  transition: transform 120ms ease, background 120ms ease, color 120ms ease;
}

.tab:hover {
  transform: translateY(-1px);
}

.tab.is-active {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text);
  border-color: rgba(255, 255, 255, 0.18);
}

.tabpanel {
  padding: 0;
}

.commentary {
  background: rgba(255, 255, 255, 0.04);
  border: 1px dashed rgba(255, 255, 255, 0.18);
  border-radius: var(--radius);
  padding: var(--pad);
  margin-bottom: 16px;
}

.commentary h2 {
  margin: 0 0 8px;
  font-size: 1.1rem;
}

.commentary p {
  margin: 0;
  color: var(--muted);
}

.card {
  background: rgba(18, 22, 34, 0.72);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.card__header {
  padding: var(--pad);
  border-bottom: 1px solid var(--border);
}

.card__title {
  margin: 0 0 6px;
  font-size: 1.1rem;
}

.card__meta {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.chart-wrap {
  padding: 10px 12px 16px;
}

#tiobeChart {
  width: 100%;
  height: 420px;
}

.notes {
  padding: 0 var(--pad) var(--pad);
  color: var(--muted);
}

.notes code {
  font-family: var(--mono);
  font-size: 0.95em;
}

.iframe-wrap {
  padding: 12px;
}

.iframe-wrap iframe {
  width: 100%;
  height: 70vh;
  min-height: 520px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: #fff;
}

.site-footer {
  padding: 24px 0 40px;
  color: var(--muted);
  font-size: 0.95rem;
}

@media (prefers-reduced-motion: reduce) {
  .tab {
    transition: none;
  }

  .tab:hover {
    transform: none;
  }
}

/* Improved link contrast on dark background */
a {
  color: #7dd3fc;
  text-decoration: underline;
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.15em;
}

a:visited {
  color: #a5b4fc;
}

a:hover,
 a:focus-visible {
  color: #38bdf8;
}

/* Commentary typography spacing */
.commentary p {
  margin: 0 0 12px;
}

.commentary p:last-child {
  margin-bottom: 0;
}

.commentary ul,
.commentary ol {
  margin: 10px 0 0 22px;
}

.commentary li + li {
  margin-top: 6px;
}