/* base.css — reset, layout, shared primitives, topbar, hero, KPI tiles.
   Section-specific styles live in charts.css / sections.css / tools.css / views.css. */

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--topbar-h) + 60px); -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 400 var(--fs-md)/1.55 var(--font-sans);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
h1, h2, h3, h4, p, ul, ol, figure { margin: 0; }
ul, ol { padding: 0; list-style: none; }
a { color: inherit; }
button, input, textarea, select { font: inherit; color: inherit; }
button { cursor: pointer; }
svg { display: block; max-width: 100%; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 4px; }
::selection { background: var(--accent); color: var(--accent-ink); }

.visually-hidden {
  position: absolute; width: 1px; height: 1px; overflow: hidden;
  clip-path: inset(50%); white-space: nowrap;
}
.skip {
  position: absolute; left: 12px; top: -60px; z-index: 100;
  background: var(--accent); color: var(--accent-ink);
  padding: 10px 14px; border-radius: var(--r-sm); text-decoration: none;
}
.skip:focus { top: 12px; }

.wrap { width: min(100% - 2 * var(--gutter), var(--maxw)); margin-inline: auto; }
.mono { font-family: var(--font-mono); font-variant-numeric: tabular-nums; }

/* ---------- primitives ---------- */

.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  box-shadow: var(--shadow-1);
  padding: var(--pad);
  min-width: 0;
}
.card__head { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; margin-bottom: 14px; }
.card__title {
  font: 600 var(--fs-xs)/1.2 var(--font-mono);
  letter-spacing: 0.16em; text-transform: uppercase; color: var(--ink-3);
}
.card__note { font-size: var(--fs-sm); color: var(--ink-3); }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 44px; padding: 0 20px;
  border: 1px solid var(--line-strong); border-radius: var(--r-pill);
  background: var(--surface); color: var(--ink);
  font-weight: 600; font-size: var(--fs-sm); text-decoration: none; white-space: nowrap;
  transition: transform var(--t-fast) var(--ease), background var(--t-fast), border-color var(--t-fast), box-shadow var(--t-fast);
}
.btn:hover { border-color: var(--accent); transform: translateY(-1px); box-shadow: var(--shadow-1); }
.btn:active { transform: translateY(0); }
.btn--primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.btn--primary:hover { box-shadow: 0 6px 20px color-mix(in srgb, var(--accent) 35%, transparent); }
.btn--ghost { background: transparent; }
.btn--sm { min-height: 34px; padding: 0 14px; font-size: var(--fs-xs); }

.iconbtn {
  display: inline-grid; place-items: center; width: 38px; height: 38px;
  border: 1px solid var(--line); border-radius: var(--r-pill);
  background: var(--surface); color: var(--ink-2);
  transition: border-color var(--t-fast), color var(--t-fast);
}
.iconbtn:hover, .iconbtn[aria-pressed="true"] { border-color: var(--accent); color: var(--accent); }
.iconbtn svg { width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }

.chip {
  display: inline-flex; align-items: center; gap: 8px;
  min-height: 36px; padding: 0 14px;
  border: 1px solid var(--line); border-radius: var(--r-pill);
  background: var(--surface); color: var(--ink-2);
  font-size: var(--fs-sm); font-weight: 600; white-space: nowrap;
  transition: background var(--t-fast), color var(--t-fast), border-color var(--t-fast);
}
.chip::before {
  content: ""; width: 8px; height: 8px; border-radius: 50%;
  background: var(--cat, var(--ink-3));
}
.chip:hover { border-color: var(--cat, var(--ink-3)); color: var(--ink); }
.chip[aria-pressed="true"] { background: var(--cat, var(--ink)); border-color: var(--cat, var(--ink)); color: var(--surface); }
.chip[aria-pressed="true"]::before { background: var(--surface); }

.tag {
  display: inline-flex; align-items: center; padding: 3px 10px;
  border-radius: var(--r-pill); background: var(--surface-2); border: 1px solid var(--line);
  font: 500 var(--fs-xs)/1.5 var(--font-mono); color: var(--ink-2);
}
.tag--cat { background: color-mix(in srgb, var(--cat) 12%, var(--surface)); border-color: color-mix(in srgb, var(--cat) 30%, var(--surface)); color: var(--cat); }
.cat-dot { display: inline-block; width: 9px; height: 9px; border-radius: 50%; background: var(--cat, var(--c-neutral)); flex: none; }

/* focus dimming: JS (markFocus) toggles .is-dim on [data-cat] elements */
.is-dim { opacity: 0.26; filter: saturate(0.35); }
[data-cat] { transition: opacity var(--t-med) var(--ease), filter var(--t-med) var(--ease); }
.is-hidden { display: none !important; }
.is-flash { animation: flash 1.4s var(--ease); }
@keyframes flash {
  0%, 60% { box-shadow: 0 0 0 3px var(--accent), var(--shadow-2); }
  100% { box-shadow: 0 0 0 0 transparent, var(--shadow-1); }
}

.tooltip {
  position: fixed; z-index: 90; pointer-events: none;
  max-width: 280px; padding: 10px 12px;
  background: var(--ink); color: var(--bg);
  border-radius: var(--r-sm); box-shadow: var(--shadow-2);
  font-size: var(--fs-sm); line-height: 1.4;
  opacity: 0; transform: translateY(4px);
  transition: opacity var(--t-fast), transform var(--t-fast);
}
.tooltip.is-on { opacity: 1; transform: none; }
.tooltip strong { display: block; }
.tooltip small { display: block; opacity: 0.75; font-family: var(--font-mono); font-size: var(--fs-xs); }

/* ---------- topbar ---------- */

.topbar {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: blur(14px) saturate(1.4);
  -webkit-backdrop-filter: blur(14px) saturate(1.4);
  border-bottom: 1px solid var(--line);
}
.topbar__row { display: flex; align-items: center; gap: 16px; min-height: var(--topbar-h); }
.brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; font-weight: 700; letter-spacing: -0.01em; flex: none; }
.brand__mark {
  display: inline-grid; place-items: center; width: 36px; height: 36px;
  border-radius: 10px; background: var(--accent); color: var(--accent-ink);
  font: 700 0.78rem/1 var(--font-mono); letter-spacing: 0.02em;
  transition: background var(--t-med) var(--ease);
}
.focusbar { display: flex; gap: 8px; margin-inline: auto; overflow-x: auto; scrollbar-width: none; padding: 4px 2px; }
.focusbar::-webkit-scrollbar { display: none; }
.topbar__tools { display: flex; align-items: center; gap: 8px; flex: none; }

.langs { display: inline-flex; border: 1px solid var(--line); border-radius: var(--r-pill); background: var(--surface); padding: 3px; }
.langs button {
  border: 0; background: transparent; border-radius: var(--r-pill);
  min-width: 34px; height: 30px; padding: 0 8px;
  font: 600 var(--fs-xs)/1 var(--font-mono); color: var(--ink-3); text-transform: uppercase;
}
.langs button:hover { color: var(--ink); }
.langs button[aria-pressed="true"] { background: var(--accent); color: var(--accent-ink); }

.kbd { font: 600 var(--fs-xs)/1 var(--font-mono); color: var(--ink-3); border: 1px solid var(--line); border-radius: 6px; padding: 3px 6px; }
.searchbtn { display: inline-flex; align-items: center; gap: 10px; height: 38px; padding: 0 12px; border: 1px solid var(--line); border-radius: var(--r-pill); background: var(--surface); color: var(--ink-3); font-size: var(--fs-sm); }
.searchbtn:hover { border-color: var(--accent); color: var(--ink); }
.searchbtn svg { width: 16px; height: 16px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; }

@media (max-width: 900px) {
  .topbar__row { flex-wrap: wrap; gap: 8px; padding-block: 8px; }
  .brand__name, .searchbtn .kbd, .searchbtn span { display: none; }
  .searchbtn { width: 38px; padding: 0; justify-content: center; }
  .topbar__tools { margin-left: auto; }
  .focusbar { order: 3; flex: 1 0 100%; margin: 0; }
  :root { --topbar-h: 104px; }
}

/* ---------- hero ---------- */

.hero { position: relative; padding-block: clamp(22px, 4vw, 56px) clamp(18px, 3vw, 40px); }
.hero::before {
  content: ""; position: absolute; top: -140px; left: calc(50% - 50vw); width: 100vw; height: 560px; z-index: -1;
  mask-image: linear-gradient(#000 55%, transparent);
  background:
    radial-gradient(60% 70% at 12% 20%, color-mix(in srgb, var(--accent) 7%, transparent), transparent 70%),
    radial-gradient(40% 60% at 92% 10%, color-mix(in srgb, var(--accent) 4%, transparent), transparent 70%);
  transition: background var(--t-med);
  pointer-events: none;
}
.hero__grid { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr); gap: clamp(20px, 3.5vw, 56px); align-items: center; }
.status {
  display: inline-flex; align-items: center; gap: 10px;
  font: 600 var(--fs-xs)/1.3 var(--font-mono); letter-spacing: 0.12em; text-transform: uppercase; color: var(--ink-2);
}
.status__led { width: 9px; height: 9px; border-radius: 50%; background: var(--ok); box-shadow: 0 0 0 4px color-mix(in srgb, var(--ok) 22%, transparent); animation: led 2.4s ease-in-out infinite; }
@keyframes led { 50% { box-shadow: 0 0 0 7px color-mix(in srgb, var(--ok) 0%, transparent); } }
.hero__name { font-size: var(--fs-hero); font-weight: 750; line-height: 0.98; letter-spacing: -0.035em; margin-top: 14px; }
.hero__title { margin-top: 12px; font-size: var(--fs-xl); font-weight: 650; letter-spacing: -0.015em; color: var(--accent); transition: color var(--t-med); }
.hero__tagline { margin-top: 10px; font-size: var(--fs-lg); color: var(--ink); max-width: 34ch; text-wrap: balance; }
.hero__sub { margin-top: 10px; color: var(--ink-2); max-width: 56ch; text-wrap: pretty; }
.hero__cta { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 22px; }

/* KPI tiles (markup contract: see kpis.js in the spec) */
.kpis { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--gap); }
.kpi {
  position: relative; overflow: hidden;
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--r-md);
  box-shadow: var(--shadow-1);
  padding: clamp(12px, 1.4vw, 20px);
  display: flex; flex-direction: column; gap: 4px; min-width: 0;
  transition: transform var(--t-med) var(--ease), box-shadow var(--t-med), opacity var(--t-med), filter var(--t-med);
}
.kpi::before { content: ""; position: absolute; inset: 0 auto 0 0; width: 3px; background: var(--cat, var(--line-strong)); }
.kpi:hover { transform: translateY(-3px); box-shadow: var(--shadow-2); }
.kpi__value { font-size: var(--fs-kpi); font-weight: 750; line-height: 1; letter-spacing: -0.03em; font-variant-numeric: tabular-nums; white-space: nowrap; }
.kpi__value small { font-size: 0.55em; font-weight: 650; color: var(--cat, var(--ink-3)); margin-left: 1px; }
.kpi__label { font-size: var(--fs-sm); font-weight: 600; line-height: 1.25; color: var(--ink); overflow-wrap: anywhere; hyphens: auto; }
.kpi__source { font: 500 var(--fs-xs)/1.35 var(--font-mono); color: var(--ink-3); margin-top: auto; padding-top: 6px; }

@media (max-width: 900px) {
  .hero__grid { grid-template-columns: 1fr; }
  .hero__tagline { max-width: none; }
}
@media (max-width: 560px) {
  .hero { padding-top: 14px; }
  .hero__sub { display: none; }
  .hero__cta { margin-top: 14px; }
  .hero__cta .btn { flex: 1; padding: 0 12px; }
  .kpis { gap: 8px; }
  .kpi { padding: 10px 10px 10px 12px; }
  .kpi__source { display: none; }
  .kpi__label { font-size: var(--fs-xs); }
}

/* ---------- sections ---------- */

.section { padding-block: clamp(18px, 2.6vw, 34px); }
.section__head { display: flex; flex-wrap: wrap; align-items: baseline; gap: 6px 14px; margin-bottom: 14px; }
.section__no { font: 600 var(--fs-xs)/1 var(--font-mono); color: var(--accent); letter-spacing: 0.1em; transition: color var(--t-med); }
.section__title { font-size: var(--fs-xl); font-weight: 700; letter-spacing: -0.02em; }
.section__sub { color: var(--ink-3); font-size: var(--fs-sm); flex: 1 1 260px; }
.grid-2 { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr); gap: var(--gap); }
@media (max-width: 900px) { .grid-2 { grid-template-columns: 1fr; } }

/* reveal on scroll (app.js adds .is-in) */
.reveal { opacity: 0; transform: translateY(14px); transition: opacity 600ms var(--ease), transform 600ms var(--ease); }
.reveal.is-in { opacity: 1; transform: none; }

/* ---------- footer ---------- */

.footer { margin-top: 30px; padding-block: 34px 44px; border-top: 1px solid var(--line); }
.footer__row { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 18px; }
.footer__cta { font-size: var(--fs-xl); font-weight: 700; letter-spacing: -0.02em; }
.footer__note { margin-top: 18px; font: 500 var(--fs-xs)/1.5 var(--font-mono); color: var(--ink-3); }

noscript .card { margin-block: 16px; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 1ms !important; animation-iteration-count: 1 !important; transition-duration: 1ms !important; }
  .reveal { opacity: 1; transform: none; }
}

/* ---------- view helpers (recruiter view + print are styled in views.css) ---------- */
.viewbar { display: none; background: var(--accent-soft); border-bottom: 1px solid var(--accent-line); }
.viewbar__row { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; padding-block: 8px; font-size: var(--fs-sm); font-weight: 600; }
.viewbar__row span { margin-right: auto; }
[data-recruiter-only] { display: none; }
.hero__summary { margin-top: 12px; color: var(--ink-2); max-width: 70ch; }