/* Visa Bulletin Tracker — editorial data-forward.
   ALL color decisions flow through these tokens; components never use raw
   color values. Semantic color carries meaning only:
   teal = advancement/Current, coral = retrogression/Unavailable. */

@font-face {
  font-family: 'Inter';
  src: url('/fonts/inter-latin.woff2') format('woff2');
  font-weight: 400 600;
  font-display: swap;
}
@font-face {
  font-family: 'Outfit';
  src: url('/fonts/outfit-latin.woff2') format('woff2');
  font-weight: 600 700;
  font-display: swap;
}

:root {
  --bg: #fafbfc;
  --surface: #ffffff;
  --text: #16202e;
  --text-secondary: #5b6b7f;
  --text-faint: #8a97a8;
  --hairline: rgba(22, 32, 46, 0.14);
  --hairline-strong: rgba(22, 32, 46, 0.28);
  --up: #0f766e;          /* teal: advancement / Current */
  --up-bg: rgba(15, 118, 110, 0.09);
  --down: #c2410c;        /* coral: retrogression / Unavailable */
  --down-bg: rgba(194, 65, 12, 0.09);
  --flat: #8a97a8;        /* no change */
  --info-bg: rgba(37, 99, 235, 0.07);
  --info-border: rgba(37, 99, 235, 0.25);
  --info-text: #1d4ed8;
  --font-body: 'Inter', system-ui, sans-serif;
  --font-heading: 'Outfit', var(--font-body);
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0e141c;
    --surface: #131b26;
    --text: #e6ecf3;
    --text-secondary: #96a5b8;
    --text-faint: #64748b;
    --hairline: rgba(230, 236, 243, 0.13);
    --hairline-strong: rgba(230, 236, 243, 0.28);
    --up: #2dd4bf;
    --up-bg: rgba(45, 212, 191, 0.10);
    --down: #fb923c;
    --down-bg: rgba(251, 146, 60, 0.10);
    --flat: #64748b;
    --info-bg: rgba(96, 165, 250, 0.09);
    --info-border: rgba(96, 165, 250, 0.3);
    --info-text: #93c5fd;
  }
}

* { box-sizing: border-box; margin: 0; }
html { -webkit-text-size-adjust: 100%; }
body {
  background: var(--bg);
  color: var(--text);
  font: 400 16px/1.55 var(--font-body);
  font-feature-settings: 'tnum';
}
a { color: inherit; }
.wrap { max-width: 76rem; margin: 0 auto; padding: 0 1.25rem; }

/* Header / nav */
.site-header {
  border-bottom: 0.5px solid var(--hairline);
  background: var(--surface);
}
.site-header .wrap { display: flex; align-items: center; gap: 1.5rem; height: 3.5rem; }
.site-header .brand { display: flex; align-items: center; gap: 0.6rem; font: 700 1.05rem var(--font-heading); text-decoration: none; }
.site-header .brand img { height: 1.5rem; width: auto; }
.site-header nav { margin-left: auto; display: flex; gap: 1.25rem; }
.site-header nav a { text-decoration: none; font-size: 0.9rem; color: var(--text-secondary); padding: 0.25rem 0; }
.site-header nav a[aria-current="page"] { color: var(--text); border-bottom: 2px solid var(--up); }

/* Masthead */
.masthead { padding: 2.25rem 0 1.5rem; display: flex; flex-wrap: wrap; gap: 1rem; align-items: flex-end; }
.masthead .eyebrow { font: 600 0.78rem/1 var(--font-body); letter-spacing: 0.08em; text-transform: uppercase; color: var(--text-secondary); margin-bottom: 0.5rem; }
.masthead h1 { font: 700 clamp(1.9rem, 4.5vw, 2.75rem)/1.1 var(--font-heading); }
.masthead .effective { color: var(--text-secondary); font-size: 0.92rem; margin-top: 0.35rem; }
.masthead .provenance { margin-left: auto; text-align: right; font-size: 0.8rem; color: var(--text-faint); line-height: 1.6; }
.masthead .provenance a { color: var(--text-secondary); }

/* Movers strip */
.movers { display: flex; gap: 1.5rem; overflow-x: auto; padding: 0.6rem 0; border-top: 0.5px solid var(--hairline); border-bottom: 0.5px solid var(--hairline); font-size: 0.82rem; white-space: nowrap; }
.movers .label { font-weight: 600; color: var(--text-secondary); text-transform: uppercase; letter-spacing: 0.06em; font-size: 0.72rem; align-self: center; }
.movers .m { display: inline-flex; gap: 0.35rem; align-items: baseline; }
.movers .m .who { color: var(--text-secondary); }
/* Direction colors — global: used by movers strip AND matrix deltas */
.d-up { color: var(--up); font-weight: 600; }
.d-down { color: var(--down); font-weight: 600; }
.d-flat { color: var(--flat); }

/* USCIS banner */
.uscis {
  margin: 1.25rem 0; padding: 0.7rem 1rem;
  background: var(--info-bg); border: 0.5px solid var(--info-border);
  border-radius: 4px; font-size: 0.88rem; color: var(--info-text);
}
.uscis strong { font-weight: 600; }

/* Tabs + segmented control */
.controls { display: flex; flex-wrap: wrap; gap: 0.75rem; align-items: center; margin: 1.5rem 0 0.75rem; }
.tabs { display: flex; border-bottom: 0.5px solid var(--hairline-strong); flex: 1 1 100%; }
.tabs button {
  appearance: none; background: none; border: none; cursor: pointer;
  font: 600 0.95rem var(--font-heading); color: var(--text-secondary);
  padding: 0.55rem 0; margin-right: 1.75rem; border-bottom: 2px solid transparent;
}
.tabs button[aria-selected="true"] { color: var(--text); border-bottom-color: var(--text); }
.seg { display: inline-flex; border: 0.5px solid var(--hairline-strong); border-radius: 4px; overflow: hidden; }
.seg button {
  appearance: none; background: none; border: none; cursor: pointer;
  font: 500 0.82rem var(--font-body); color: var(--text-secondary); padding: 0.35rem 0.8rem;
}
.seg button + button { border-left: 0.5px solid var(--hairline-strong); }
.seg button[aria-pressed="true"] { background: var(--text); color: var(--bg); }
.chart-sub { font-size: 0.82rem; color: var(--text-faint); }

/* Matrix */
.matrix-panel[hidden] { display: none; }
table.matrix { width: 100%; border-collapse: collapse; font-size: 0.88rem; }
.matrix th, .matrix td { border: 0.5px solid var(--hairline); padding: 0.5rem 0.65rem; text-align: center; vertical-align: middle; }
.matrix thead th { font: 600 0.78rem var(--font-body); letter-spacing: 0.03em; color: var(--text-secondary); background: var(--surface); }
.matrix tbody th { text-align: left; font-weight: 600; background: var(--surface); position: sticky; left: 0; }
.matrix .cat-name { display: block; font-weight: 400; font-size: 0.72rem; color: var(--text-faint); max-width: 14rem; }
.matrix .date { font-weight: 500; font-variant-numeric: tabular-nums; }
.matrix .delta { display: block; font-size: 0.7rem; margin-top: 0.1rem; }
.pill { display: inline-block; padding: 0.1rem 0.55rem; border-radius: 999px; font-size: 0.78rem; font-weight: 600; }
.pill.c { background: var(--up-bg); color: var(--up); }
.pill.u { background: var(--down-bg); color: var(--down); }

/* Mobile: stacked per-category cards.
   Row grid: label (flexible) | value (right-aligned, shared edge) | delta
   (fixed-width right column) — every value in a card shares one vertical
   alignment edge. */
@media (max-width: 720px) {
  table.matrix, .matrix thead, .matrix tbody, .matrix tr, .matrix th { display: block; }
  .matrix thead { display: none; }
  .matrix tbody tr { border: 0.5px solid var(--hairline); margin-bottom: 0.9rem; }
  .matrix tbody th { position: static; border: none; border-bottom: 0.5px solid var(--hairline); }
  .matrix td {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto 5.5rem;
    align-items: center;
    column-gap: 0.5rem;
    border: none; border-bottom: 0.5px solid var(--hairline);
    text-align: right;
  }
  .matrix td:last-child { border-bottom: none; }
  .matrix td::before { content: attr(data-label); grid-column: 1; text-align: left; font-size: 0.78rem; color: var(--text-secondary); font-weight: 500; }
  .matrix td .date, .matrix td .pill { grid-column: 2; justify-self: end; }
  .matrix td .delta { display: block; grid-column: 3; justify-self: end; margin: 0; font-size: 0.68rem; white-space: nowrap; }
}

/* Narrow header: logo-only brand, no wrapping */
@media (max-width: 560px) {
  .site-header .brand span { display: none; }
  .site-header nav { gap: 1rem; }
}

/* Archive */
.month-nav { display: flex; justify-content: space-between; gap: 1rem; padding: 0.6rem 0; border-top: 0.5px solid var(--hairline); font-size: 0.88rem; }
.month-nav a { color: var(--text-secondary); text-decoration: none; }
.month-nav a:hover { color: var(--text); }
.archive .year-row { display: flex; gap: 1.5rem; align-items: baseline; padding: 0.7rem 0; border-bottom: 0.5px solid var(--hairline); }
.archive h2 { font: 700 1.1rem var(--font-heading); width: 4rem; }
.archive .months { display: flex; flex-wrap: wrap; gap: 0.25rem 1rem; }
.archive .months a { text-decoration: none; color: var(--text-secondary); font-size: 0.9rem; padding: 0.15rem 0; }
.archive .months a:hover { color: var(--text); }

/* History page */
.hist-controls { display: flex; flex-wrap: wrap; gap: 1rem; align-items: flex-end; margin: 0.5rem 0 1.25rem; padding: 1rem 0; border-top: 0.5px solid var(--hairline); border-bottom: 0.5px solid var(--hairline); }
.hist-controls label { display: flex; flex-direction: column; gap: 0.3rem; font-size: 0.75rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.05em; color: var(--text-secondary); }
.hist-controls select {
  font: 500 0.9rem var(--font-body); color: var(--text);
  background: var(--surface); border: 0.5px solid var(--hairline-strong);
  border-radius: 4px; padding: 0.4rem 0.6rem; min-width: 11rem;
}
.chart-note { min-height: 1.3rem; font-size: 0.82rem; color: var(--text-faint); margin-bottom: 0.3rem; }
@media (max-width: 560px) {
  .hist-controls label { flex: 1 1 100%; }
  .hist-controls select { width: 100%; min-width: 0; }
  .hist-controls .seg { flex: 1 1 100%; justify-content: stretch; }
  .hist-controls .seg button { flex: 1; }
}
.chart-box svg { width: 100%; height: auto; display: block; }
.chart-box .line { fill: none; stroke: var(--text); stroke-width: 1.5; }
.chart-box .grid { stroke: var(--hairline); stroke-width: 0.5; }
.chart-box .axis { fill: var(--text-faint); font: 400 11px var(--font-body); }
.chart-box .mk-c { fill: var(--up); }
.chart-box .mk-u { fill: var(--down); }
.chart-legend { display: flex; gap: 1.5rem; margin-top: 0.75rem; font-size: 0.8rem; color: var(--text-secondary); }
.lg { display: inline-block; vertical-align: middle; margin-right: 0.35rem; }
.lg-line { width: 1.1rem; height: 0; border-top: 1.5px solid var(--text); }
.lg-c { width: 4px; height: 7px; background: var(--up); }
.lg-u { width: 4px; height: 7px; background: var(--down); }

/* Explainer + footer */
.explainer { margin: 3rem 0; padding-top: 2rem; border-top: 0.5px solid var(--hairline); }
.explainer h2 { font: 700 1.3rem var(--font-heading); margin-bottom: 1rem; }
.explainer .cols { display: grid; grid-template-columns: repeat(auto-fit, minmax(18rem, 1fr)); gap: 2rem; }
.explainer h3 { font: 600 1rem var(--font-heading); margin-bottom: 0.4rem; }
.explainer p { color: var(--text-secondary); font-size: 0.92rem; }
.about { margin: 2rem 0 0; padding: 1.5rem 0; border-top: 0.5px solid var(--hairline); font-size: 0.85rem; color: var(--text-faint); }
.site-footer { border-top: 0.5px solid var(--hairline); margin-top: 3rem; padding: 1.5rem 0 2.5rem; font-size: 0.8rem; color: var(--text-faint); }
.site-footer .wrap { display: flex; flex-wrap: wrap; gap: 1rem; justify-content: space-between; }