/* ==========================================================================
   BASE
   ========================================================================== */

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

body {
  margin: 0;
  background: var(--c-bg);
  color: var(--c-text);
  font-family: var(--f-body);
  font-size: var(--fs-body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img { max-width: 100%; display: block; }
svg { display: block; }

a {
  color: inherit;
  text-decoration: none;
}

h1, h2, h3, h4 {
  font-family: var(--f-display);
  font-weight: 600;
  line-height: 1.12;
  letter-spacing: -0.01em;
  margin: 0;
  color: #fff;
}
h1 { font-size: var(--fs-h1); letter-spacing: -0.02em; }
h2 { font-size: var(--fs-h2); }
h3 { font-size: var(--fs-h3); }
h4 { font-size: var(--fs-h4); }

p { margin: 0; color: var(--c-text-dim); }

ul, ol { margin: 0; padding: 0; list-style: none; }

button { font-family: inherit; }

/* Visible keyboard focus — never suppressed */
:focus-visible {
  outline: 2px solid var(--c-accent);
  outline-offset: 3px;
  border-radius: 2px;
}

::selection { background: var(--c-accent); color: #04262b; }

/* ---- Layout helpers ---- */
.container {
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}
.container--narrow { max-width: var(--container-narrow); }

.section { padding-block: var(--section-pad); }
.section--tight { padding-block: calc(var(--section-pad) * 0.6); }
.section--alt { background: var(--c-bg-alt); }
.section--surface { background: var(--c-surface); border-block: 1px solid var(--c-border-hairline); }

.stack-sm > * + * { margin-top: 12px; }
.stack-md > * + * { margin-top: 20px; }
.stack-lg > * + * { margin-top: 40px; }

.visually-hidden {
  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;
  background: var(--c-accent); color: #04262b;
  padding: 10px 16px; border-radius: var(--radius-sm);
  font-family: var(--f-mono); font-size: 0.85rem;
  z-index: 200; transition: top var(--dur) var(--ease);
}
.skip-link:focus { top: 12px; }

/* ---- Eyebrow / labels ---- */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--f-mono);
  font-size: var(--fs-eyebrow);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--c-accent);
}
.eyebrow::before {
  content: "";
  width: 14px; height: 1px;
  background: var(--c-accent);
  display: inline-block;
}
.eyebrow--violet { color: var(--c-violet); }
.eyebrow--violet::before { background: var(--c-violet); }
.eyebrow--dim { color: var(--c-text-faint); }
.eyebrow--dim::before { background: var(--c-border-strong); }

/* ---- Status pill: the recurring evidence-integrity device ----
   Distinguishes what MSQX offers today from what is under research. */
.status {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-family: var(--f-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 5px 10px 5px 8px;
  border: 1px solid var(--c-border-strong);
  border-radius: 999px;
  color: var(--c-text-dim);
  white-space: nowrap;
}
.status::before {
  content: "";
  width: 6px; height: 6px;
  border-radius: 50%;
  flex-shrink: 0;
}
.status--available { border-color: var(--c-accent-border); color: var(--c-accent); }
.status--available::before { background: var(--c-accent); box-shadow: 0 0 0 3px var(--c-accent-soft); }
.status--research { border-color: var(--c-amber-border); color: var(--c-amber); }
.status--research::before { background: var(--c-amber); box-shadow: 0 0 0 3px var(--c-amber-soft); }
.status--concept { border-color: var(--c-border-strong); color: var(--c-text-faint); }
.status--concept::before { background: var(--c-text-faint); }

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--f-body);
  font-weight: 600;
  font-size: 0.95rem;
  padding: 13px 22px;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease), color var(--dur) var(--ease), transform var(--dur) var(--ease);
  white-space: nowrap;
}
.btn:active { transform: translateY(1px); }
.btn-primary {
  background: var(--c-accent);
  color: #04181c;
}
.btn-primary:hover { background: #4fe2f0; }
.btn-ghost {
  background: transparent;
  border-color: var(--c-border-strong);
  color: var(--c-text);
}
.btn-ghost:hover { border-color: var(--c-accent); color: var(--c-accent); }
.btn-arrow { transition: transform var(--dur) var(--ease); }
.btn:hover .btn-arrow { transform: translateX(3px); }
.btn-sm { padding: 9px 16px; font-size: 0.85rem; }

/* ---- Cards ---- */
.card {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-md);
  padding: 28px;
  transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}
.card:hover { border-color: var(--c-border-strong); }

/* ---- Divider ---- */
.hr {
  height: 1px;
  background: var(--c-border-hairline);
  border: 0;
  margin: 0;
}

/* ---- Lattice background (signature motif, see components.css) ---- */
.lattice-field {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
  z-index: 0;
}