/* ---------- Reset & shared primitives ---------- */
* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: ui-sans-serif, "Segoe UI", Helvetica, Arial, sans-serif;
  color: var(--ink);
}
img { max-width: 100%; display: block; }
a { color: inherit; }

.chrome-font {
  font-family: ui-monospace, "SF Mono", "JetBrains Mono", "Cascadia Mono", monospace;
  letter-spacing: 0.02em;
}

/* Visually hidden but available to assistive tech */
.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Skip link — accessibility escape hatch, also doubles as the
   "skip the desktop, view plain version" safety net */
.skip-link {
  position: absolute;
  top: -100px;
  left: 12px;
  z-index: 300;
  background: var(--accent);
  color: var(--accent-ink);
  padding: 10px 16px;
  border-radius: 8px;
  font-weight: 700;
  text-decoration: none;
  transition: top 0.15s ease;
}
.skip-link:focus {
  top: 12px;
}

/* Consistent focus ring everywhere */
:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 2px;
}

/* Tech-stack chips, shared by desktop + mobile project cards */
.tech-chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 8px 0 10px;
}
.tech-chip {
  font-size: 0.72rem;
  font-weight: 600;
  padding: 3px 9px;
  border-radius: 999px;
  background: var(--violet-tint-22);
  color: var(--violet);
  border: 1px solid var(--violet);
}
@supports (color: color-mix(in srgb, black, white)) {
  .tech-chip {
    background: color-mix(in srgb, var(--violet) 16%, transparent);
    border-color: color-mix(in srgb, var(--violet) 55%, transparent);
  }
}

/* Case-study fields (problem / role / approach / outcome) */
.case-study dt {
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--ink-soft);
  margin-top: 10px;
}
.case-study dt:first-child { margin-top: 0; }
.case-study dd {
  margin: 2px 0 0;
  line-height: 1.5;
}

.cta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  text-decoration: none;
  font-weight: 700;
  font-size: 0.85rem;
  padding: 10px 16px;
  border-radius: 10px;
  border: 1px solid transparent;
  cursor: pointer;
  font-family: inherit;
}
.cta.primary { background: var(--accent); color: var(--accent-ink); }
.cta.secondary {
  background: var(--ink-8);
  color: var(--ink);
  border-color: var(--paper-edge);
}
@supports (color: color-mix(in srgb, black, white)) {
  .cta.secondary { background: color-mix(in srgb, var(--ink) 8%, transparent); }
}
.cta[aria-disabled="true"] {
  opacity: 0.5;
  pointer-events: none;
}
.cta-row { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 14px; }

.placeholder-flag {
  display: inline-block;
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--accent);
  border: 1px dashed var(--accent);
  border-radius: 6px;
  padding: 1px 6px;
  margin-left: 6px;
}

/* ---------- Experience switch: desktop OS vs. plain mobile page ---------- */
/* Single breakpoint, matched by js/app.js's matchMedia query. Below it we
   deliberately do NOT ship the window-manager/game metaphor at all — just
   a fast, plain, responsive page. */
#mobile-experience { display: none; }
@media (max-width: 680px) {
  #desktop-experience { display: none; }
  #mobile-experience { display: block; }
}
/* "Plain text view" escape hatch — lets a desktop-width visitor opt out
   of the OS metaphor entirely, e.g. for screen-reader/keyboard use. */
body.force-plain-view #desktop-experience { display: none; }
body.force-plain-view #mobile-experience { display: block; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}