/* ---------- Tokens ---------- */
:root {
  --font-mono: "Courier New", Courier, ui-monospace, SFMono-Regular, Menlo, monospace;
  --color-text: #000;
  --color-link: #0000ff;
  --color-muted: #555;
  --color-border: #ccc;
  --max-width: 800px;
  --space: 1rem;
  --space-lg: 2rem;
}

/* ---------- Reset / base ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  font-family: var(--font-mono);
  color: var(--color-text);
  text-align: left;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-lg) var(--space);
  line-height: 1.5;
}

main { display: block; }

img, iframe { max-width: 100%; }
img { height: auto; }

/* Anchors */
a {
  color: var(--color-link);
  text-decoration: none;
}
a:hover,
a:focus-visible { text-decoration: underline; }
a:focus-visible {
  outline: 2px solid var(--color-link);
  outline-offset: 2px;
}

/* Skip link for keyboard users */
.skip-link {
  position: absolute;
  left: -10000px;
  top: auto;
  width: 1px;
  height: 1px;
  overflow: hidden;
}
.skip-link:focus {
  position: static;
  width: auto;
  height: auto;
  padding: 0.5rem;
  background: #fff;
}

/* ---------- Header / footer ---------- */
.site-header {
  font-family: var(--font-mono);
  text-align: center;
  margin: var(--space-lg) 0;
}
.header-link {
  color: inherit;
  text-decoration: none;
  cursor: pointer;
}
.header-link:hover,
.header-link:focus-visible { text-decoration: underline; }

.site-footer {
  font-family: var(--font-mono);
  text-align: center;
  padding: var(--space-lg) var(--space);
  margin-top: var(--space-lg);
  color: var(--color-text);
}
.site-footer p { margin: 0 0 0.5rem; }

/* ---------- Hover image preview ---------- */
/*
  Desktop (hover-capable): image floats below trigger on hover.
  Touch (no hover): tap the trigger → image floats below; tap again
  follows the link (site.js handles this). The .is-open class is set
  by JS on touch so CSS doesn't need to know about device type.
*/
.hover-image-text {
  position: relative;
  cursor: pointer;
  color: var(--color-link);
  text-decoration: none;
}

.hover-image {
  opacity: 0;
  transition: opacity 0.2s ease;
  pointer-events: none;
  position: absolute;
  top: 100%;
  left: 0;
  width: 200px;
  max-width: 80vw;
  height: auto;
  z-index: 10;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
  border: 1px solid var(--color-border);
  background: #fff;
}

@media (hover: hover) {
  .hover-image-text:hover .hover-image,
  .hover-image-text:focus-within .hover-image {
    opacity: 1;
    pointer-events: auto;
  }
}

.hover-image-text.is-open .hover-image {
  opacity: 1;
  pointer-events: auto;
}

/* ---------- Responsive image helper ---------- */
.responsive-image {
  display: block;
  max-width: 90%;
  height: auto;
  margin: var(--space-lg) auto;
}

/* ---------- Portfolio list ---------- */
.portfolio-year {
  margin: var(--space-lg) 0 var(--space);
  font-weight: bold;
}
.portfolio-year ul {
  list-style: none;
  padding: 0;
  margin: 0;
}
.portfolio-year li { margin: 0.25rem 0; }

/* ---------- Project page ---------- */
.project-meta {
  color: var(--color-muted);
  margin-top: -0.5rem;
}

.project h2 { margin-top: var(--space-lg); }
.project h3 { margin-top: var(--space); }

.project code {
  font-family: var(--font-mono);
  background: #f4f4f4;
  padding: 0.1em 0.3em;
  border-radius: 3px;
}

/* ---------- Mobile tweaks ---------- */
@media (max-width: 600px) {
  body {
    padding: var(--space) 0.75rem;
  }
  .site-header { margin: var(--space) 0; }
  .site-footer { padding: var(--space) 0.75rem; }
  .responsive-image { max-width: 100%; }
  iframe { width: 100%; }
}

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    transition: none !important;
    animation: none !important;
  }
}