* { box-sizing: border-box; margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--body);
  background: var(--canvas);
  color: var(--fg);
  line-height: 1.55;
  font-size: 15px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  min-height: 100vh;
  /* faint instrument grid — the ambient signature, kept quiet */
  background-image: radial-gradient(circle at 1px 1px, var(--line) 1px, transparent 0);
  background-size: 44px 44px;
  background-attachment: fixed;
}
:root[data-theme='light'] body { background-image: radial-gradient(circle at 1px 1px, #e7ecf1 1px, transparent 0); }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }
input, textarea, select { font-family: inherit; }
::selection { background: var(--brand-tint); }

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }
main { padding-top: 8px; }
.view { display: none; }
.view.is-active { display: block; }
.view-loading { padding: 60px 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }

/* accessibility */
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }
.skip-link { position: absolute; left: 12px; top: -60px; z-index: 999; background: var(--brand); color: #04211d; padding: 10px 16px; border-radius: var(--r-sm); font-weight: 600; transition: top 0.2s; }
.skip-link:focus { top: 12px; }
:focus-visible { outline: none; box-shadow: var(--ring); border-radius: var(--r-xs); }

/* view headers */
.view-head { padding: 40px 0 22px; }
.h2 { font-family: var(--display); font-weight: 700; font-size: clamp(24px, 3.4vw, 34px); letter-spacing: -0.02em; }
.h2-sub { color: var(--fg-muted); max-width: 720px; margin-top: 8px; font-size: 15px; }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; font-family: var(--mono); font-size: 11px; letter-spacing: 1.6px; text-transform: uppercase; color: var(--fg-muted); }
.live-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--pos); box-shadow: 0 0 0 0 var(--pos); animation: ping 2.4s infinite; }
@keyframes ping { 0% { box-shadow: 0 0 0 0 rgba(63, 185, 80, 0.5); } 70%, 100% { box-shadow: 0 0 0 7px rgba(63, 185, 80, 0); } }

/* buttons */
.btn-primary { display: inline-flex; align-items: center; gap: 7px; background: var(--brand); color: #04211d; font-weight: 600; font-size: 13.5px; padding: 9px 15px; border-radius: var(--r-sm); transition: background 0.16s var(--ease), transform 0.1s; }
:root[data-theme='light'] .btn-primary { color: #fff; }
.btn-primary:hover { background: var(--brand-hi); }
.btn-primary:active { transform: translateY(1px); }
.btn-primary.block { width: 100%; justify-content: center; padding: 13px; font-size: 14.5px; margin-top: 6px; }
.btn-secondary { display: inline-flex; align-items: center; gap: 7px; background: var(--raised); color: var(--fg); border: 1px solid var(--line-2); font-weight: 600; font-size: 13px; padding: 9px 14px; border-radius: var(--r-sm); transition: border-color 0.16s, background 0.16s; }
.btn-secondary:hover { border-color: var(--brand-deep); color: var(--brand-hi); }
.icon-btn { display: inline-flex; align-items: center; gap: 6px; width: 38px; height: 38px; justify-content: center; border-radius: var(--r-sm); color: var(--fg-muted); border: 1px solid transparent; transition: all 0.16s; }
.icon-btn:hover { color: var(--fg); background: var(--raised); }
.icon-btn.ghost:hover { background: var(--brand-tint); color: var(--brand-hi); }
.icon-btn.sm { width: 34px; height: 34px; border: 1px solid var(--line-2); background: var(--raised); }
.icon-btn.sm:hover { border-color: var(--brand-deep); color: var(--brand-hi); }
.icon-btn.is-rec { background: var(--crit); color: #fff; border-color: var(--crit); animation: recpulse 1.1s infinite; }
@keyframes recpulse { 50% { box-shadow: 0 0 0 6px var(--crit-tint); } }

/* footer */
footer { border-top: 1px solid var(--line); margin-top: 80px; padding: 26px 0 60px; }
footer .disc { color: var(--fg-faint); font-size: 12.5px; max-width: 780px; }
footer .foot-brand { font-family: var(--mono); color: var(--fg-muted); font-size: 11px; letter-spacing: 1px; margin-top: 8px; }

.c-crit { color: var(--crit); } .c-pos { color: var(--pos); } .c-warn { color: var(--warn); } .c-info { color: var(--info); }

@media (prefers-reduced-motion: reduce) { *, *::before, *::after { animation-duration: 0.001ms !important; transition-duration: 0.001ms !important; } }

@media (max-width: 720px) {
  .wrap { padding: 0 16px; }
  .view-loading { grid-template-columns: 1fr; }
  .view-head { padding: 26px 0 16px; }
}