/* ── Self-Hosted Fonts ── */
@font-face {
  font-family: 'Libre Baskerville';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('fonts/libre-baskerville-latin-400.woff2') format('woff2');
}
@font-face {
  font-family: 'Libre Baskerville';
  font-style: italic;
  font-weight: 400;
  font-display: swap;
  src: url('fonts/libre-baskerville-latin-400italic.woff2') format('woff2');
}
@font-face {
  font-family: 'Libre Baskerville';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url('fonts/libre-baskerville-latin-700.woff2') format('woff2');
}
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('fonts/inter-latin-400.woff2') format('woff2');
}
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url('fonts/inter-latin-600.woff2') format('woff2');
}

/* ============================================================================
   Snowyla — Bento editorial design
   Adapted from romyilanobento "Controlled Chaos — Gallery Minimal" mode
   ============================================================================ */

/* ── Custom Properties ── */
:root {
  /* ── Typographic Voices ── */
  --font-display: 'Libre Baskerville', Georgia, serif;
  --font-body:    'Inter', system-ui, sans-serif;

  /* ── Type Scale ── */
  --type-massive:  clamp(4rem, 8vw + 1rem, 12rem);
  --type-headline: clamp(1.5rem, 3vw + 0.5rem, 3rem);
  --type-body:     clamp(1rem, 1.5vw, 1.25rem);
  --type-caption:  clamp(0.75rem, 0.8vw, 0.875rem);

  /* ── Color ── */
  --bg:            #f8f6f3;
  --text:          #111111;
  --text-muted:    #777777;
  --text-faint:    #aaaaaa;
  --border:        rgba(0, 0, 0, 0.09);

  /* ── Project tile backgrounds ── */
  --tile-swift:    #e8e5e0;  /* Swift / visionOS */
  --tile-webxr:    #dce4f0;  /* WebXR / A-Frame */
  --tile-mobile:   #e0ece4;  /* iOS / mobile */
  --tile-web:      #ece8e0;  /* Open web */
  --tile-project:  #e8e5e0;  /* default */
  --tile-blog:     #f0ede8;
  /* ── Lifted from romyilanobento ── */
  --tile-dark:     #111111;
  --tile-photo:    #d4d0c9;
  --tile-hashnode: #eee0e8;
  --tile-mastodon: #e0daf2;
  --tile-instagram:#f0dce4;

  /* ── Layout ── */
  --header-h: 56px;
  --page-x:   clamp(20px, 5vw, 60px);
  --grid-gap: 3px;

  /* ── Motion ── */
  --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-snap:     cubic-bezier(0.4, 0, 0.2, 1);
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  overflow-x: clip;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a { text-decoration: none; color: inherit; }
img { display: block; max-width: 100%; }

/* ── Skip Link ── */
.skip-link {
  position: absolute;
  top: -100%;
  left: 16px;
  z-index: 200;
  background: var(--text);
  color: var(--bg);
  padding: 8px 16px;
  font-family: var(--font-body);
  font-size: var(--type-caption);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}
.skip-link:focus { top: 16px; }

/* ============================================================================
   HEADER
   ============================================================================ */

.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--page-x);
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  z-index: 100;
}

.site-name {
  font-family: var(--font-display);
  font-size: clamp(0.85rem, 1.2vw, 1rem);
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  transition: opacity 0.2s var(--ease-snap);
}
.site-name:hover { opacity: 0.5; }

.site-nav {
  display: flex;
  align-items: center;
  gap: 28px;
  font-family: var(--font-body);
  font-size: var(--type-caption);
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
}
.site-nav a { transition: color 0.2s var(--ease-snap); }
.site-nav a:hover { color: var(--text); }

/* ============================================================================
   HERO (text hero removed — see .hero-grid below)
   ============================================================================ */

main { padding-top: var(--header-h); }

/* Cascade reveal animations — kept for potential reuse in future phases */
@keyframes reveal-up {
  from { opacity: 0; transform: translateY(32px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ============================================================================
   WORK GRID — tight 3px bento mosaic
   ============================================================================ */

.work-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: var(--grid-gap);
  width: 100%;
}

/* ============================================================================
   HERO GRID — 5:2 two-column project tile hero
   Decisions: D-02 (grid-template-columns: 5fr 2fr), D-03 (left + stacked right),
              D-06 (border-bottom separation)
   ============================================================================ */

.hero-grid {
  display: grid;
  grid-template-columns: 5fr 2fr;
  gap: var(--grid-gap);
  min-height: 60vh;
  border-bottom: 1px solid var(--border);
}

/* Right column: two tiles stacked at equal height */
.hero-grid__right {
  display: grid;
  grid-template-rows: 1fr 1fr;
  gap: var(--grid-gap);
}

/* ============================================================================
   CATEGORY SECTIONS — horizontal-scrolling labeled project rows
   Phase 2: CAT-01, CAT-02, CAT-03, CAT-04
   ============================================================================ */

/* Block wrapper for one category: label + scroll row */
.cat-section {
  margin-top: 32px;
}

/* Bottom border on the final category section — same hairline treatment as .hero-grid */
.cat-section:last-of-type {
  border-bottom: 1px solid var(--border);
}

/* Caption-scale uppercase label above each scroll row */
.cat-label {
  font-family: var(--font-body);
  font-size: var(--type-caption);
  font-weight: 400;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-muted);
  padding: 0 0 16px 0;
}

/* Horizontal scrolling flex container */
.cat-row {
  display: flex;
  flex-direction: row;
  gap: var(--grid-gap);
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.cat-row::-webkit-scrollbar {
  display: none;
}

/* Fixed-width tile inside a category row */
.cat-tile {
  flex: 0 0 100vw;
  height: clamp(200px, 28vw, 300px);
  scroll-snap-align: start;
  position: relative;
  overflow: hidden;
  cursor: pointer;
}

.work-item {
  position: relative;
  overflow: hidden;
  display: block;
  cursor: pointer;
  width: 100%;
}

.work-item:focus-visible {
  outline: 2px solid var(--text);
  outline-offset: -2px;
  z-index: 2;
}

/* ── Grid placement for project tiles ── */
/* Agent-injected tiles use these classes */
.work-item--full    { grid-column: 1 / -1; }
.work-item--wide    { grid-column: span 8; }
.work-item--tall    { grid-column: span 4; grid-row: span 2; }
.work-item--half    { grid-column: span 6; }
.work-item--quarter { grid-column: span 4; }
/* Blog / links row */
.work-item--blog    { grid-column: span 4; }

/* ── Aspect ratios via padding trick ── */
.work-item::before { content: ''; display: block; }
.work-item--full::before    { padding-bottom: 42%; }
.work-item--wide::before    { padding-bottom: 52%; }
.work-item--tall::before    { padding-bottom: 0; min-height: 320px; }
.work-item--half::before    { padding-bottom: 56%; }
.work-item--quarter::before { padding-bottom: 80%; }
.work-item--blog::before    { padding-bottom: 55%; }

/* ── Tile backgrounds ── */
.work-item--project  { background: var(--tile-project); }
.work-item--swift    { background: var(--tile-swift); }
.work-item--webxr    { background: var(--tile-webxr); }
.work-item--mobile   { background: var(--tile-mobile); }
.work-item--web      { background: var(--tile-web); }
.work-item--blog-tile { background: var(--tile-blog); }

/* Hover: brightness only */
.work-item--project:hover,
.work-item--swift:hover,
.work-item--webxr:hover,
.work-item--mobile:hover,
.work-item--web:hover,
.work-item--blog-tile:hover { filter: brightness(0.94); }

/* ── Arrow: slides in on hover ── */
.work-arrow {
  position: absolute;
  top: clamp(16px, 2vw, 24px);
  right: clamp(20px, 2.5vw, 28px);
  font-size: 1rem;
  opacity: 0;
  transform: translate(-6px, 6px);
  transition: opacity 250ms var(--ease-snap), transform 250ms var(--ease-snap);
}
.work-item:hover .work-arrow {
  opacity: 0.7;
  transform: translate(0, 0);
}

/* ── Project tile inner ── */
.work-project-inner {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: clamp(16px, 2vw, 28px);
  gap: 8px;
}

.work-project-eyebrow {
  font-family: var(--font-body);
  font-size: var(--type-caption);
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.work-project-title {
  font-family: var(--font-display);
  font-size: clamp(1.1rem, 2.2vw, 1.8rem);
  font-weight: 700;
  font-style: italic;
  letter-spacing: -0.02em;
  line-height: 1.0;
  color: var(--text);
}

.work-project-desc {
  font-family: var(--font-body);
  font-size: var(--type-body);
  font-weight: 400;
  line-height: 1.5;
  color: var(--text-muted);
  max-width: 38ch;
}

/* ── Tech badge chips on tiles ── */
.work-project-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  margin-top: 4px;
}

.badge {
  display: inline-block;
  padding: 2px 7px;
  font-family: var(--font-body);
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  border: 1px solid currentColor;
}
.badge--visionos { color: #5500aa; border-color: rgba(85, 0, 170, 0.35); }
.badge--webxr    { color: #1a3faa; border-color: rgba(26, 63, 170, 0.35); }
.badge--ios      { color: #006699; border-color: rgba(0, 102, 153, 0.35); }
.badge--swift    { color: #b84000; border-color: rgba(184, 64, 0, 0.35); }
.badge--web      { color: var(--text-muted); border-color: var(--border); }
.badge--mobile   { color: #007055; border-color: rgba(0, 112, 85, 0.35); }

/* ── Blog / links tile inner ── */
.work-blog-inner {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: clamp(16px, 2vw, 24px);
  gap: 6px;
}
.work-blog-label {
  font-family: var(--font-body);
  font-size: var(--type-caption);
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-muted);
}
.work-blog-handle {
  font-family: var(--font-display);
  font-size: var(--type-headline);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 0.95;
  color: var(--text);
  font-style: italic;
}

/* ── Per-project photo tiles (lifted from romyilanobento) ── */
.work-item--poelove {
  background:
    linear-gradient(to top, rgba(0,0,0,0.55) 40%, rgba(0,0,0,0.08) 100%),
    url('assets/images/projects/poelove_hero.png') center / cover no-repeat;
}
.work-item--poelove .work-project-title,
.work-item--poelove .work-arrow { color: #fff; }
.work-item--poelove .work-project-desc { color: rgba(255,255,255,0.80); }
.work-item--poelove:hover { filter: brightness(0.90); }

.work-item--dioramaxr {
  background:
    linear-gradient(to top, rgba(0,0,0,0.55) 40%, rgba(0,0,0,0.08) 100%),
    url('assets/images/projects/dioramaxr_hero.png') center / cover no-repeat;
}
.work-item--dioramaxr .work-project-title,
.work-item--dioramaxr .work-arrow { color: #fff; }
.work-item--dioramaxr .work-project-desc { color: rgba(255,255,255,0.80); }
.work-item--dioramaxr:hover { filter: brightness(0.90); }

/* ── Empty state ── */
.projects-empty {
  grid-column: 1 / -1;
  padding: clamp(48px, 8vw, 80px) var(--page-x);
  font-family: var(--font-body);
  font-size: var(--type-body);
  color: var(--text-faint);
  background: var(--tile-project);
  text-align: center;
}

/* ============================================================================
   ABOUT
   ============================================================================ */

.about-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(48px, 6vw, 100px);
  padding: clamp(72px, 10vw, 120px) var(--page-x);
  border-top: 1px solid var(--border);
  margin-top: clamp(40px, 5vw, 56px);
  align-items: start;
}

.about-overline {
  font-family: var(--font-body);
  font-size: var(--type-caption);
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-faint);
  margin-bottom: 28px;
}

.about-body {
  font-family: var(--font-body);
  font-size: var(--type-body);
  font-weight: 400;
  line-height: 1.75;
  color: var(--text-muted);
  max-width: 38ch;
}

/* Link rows */
.about-link-row {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 14px 0;
  border-bottom: 1px solid var(--border);
  transition: color 0.2s var(--ease-snap);
}
.about-link-row:first-of-type { border-top: 1px solid var(--border); }
.about-link-row:hover { color: var(--text-muted); }

.about-link-label {
  font-family: var(--font-body);
  font-size: var(--type-caption);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-faint);
  width: 68px;
  flex-shrink: 0;
}

.about-link-value {
  font-family: var(--font-body);
  font-size: var(--type-body);
  font-weight: 400;
  flex: 1;
}

.about-link-arrow {
  font-size: var(--type-caption);
  color: var(--text-faint);
  margin-left: auto;
  flex-shrink: 0;
}

/* ============================================================================
   FOOTER
   ============================================================================ */

.site-footer {
  border-top: 1px solid var(--border);
  padding: 24px var(--page-x);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-body);
  font-size: var(--type-caption);
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-faint);
}

/* ============================================================================
   RESPONSIVE
   ============================================================================ */

@media (max-width: 900px) {
  .work-item--wide    { grid-column: span 12; }
  .work-item--tall    { grid-column: span 6; grid-row: span 1; }
  .work-item--half    { grid-column: span 12; }
  .work-item--quarter { grid-column: span 6; }
  .work-item--blog    { grid-column: span 6; }
  .work-item--full::before    { padding-bottom: 60%; }
  .work-item--wide::before    { padding-bottom: 55%; }
  .work-item--tall::before    { padding-bottom: 55%; min-height: 0; }
  .work-item--half::before    { padding-bottom: 55%; }
  .work-item--quarter::before { padding-bottom: 55%; }
  .about-section { grid-template-columns: 1fr; }
}

@media (max-width: 600px) {
  :root { --page-x: 20px; }
  .work-item--wide,
  .work-item--half,
  .work-item--quarter,
  .work-item--tall,
  .work-item--blog { grid-column: 1 / -1; }
  .work-item--full::before,
  .work-item--wide::before,
  .work-item--half::before,
  .work-item--quarter::before,
  .work-item--tall::before,
  .work-item--blog::before { padding-bottom: 60%; min-height: 0; }
  .site-footer { flex-direction: column; gap: 6px; text-align: center; }
  .site-nav { gap: 16px; }

  /* Phase 3: hero collapses to single column on mobile */
  .hero-grid {
    grid-template-columns: 1fr;
    min-height: unset;
  }
  .hero-grid__right {
    grid-template-rows: unset;
  }

  /* Phase 3: cat tiles show 85vw so next tile peeks (scroll affordance) */
  .cat-tile {
    flex: 0 0 85vw;
  }
}

/* ── Reduced motion ── */
@media (prefers-reduced-motion: reduce) {
  .work-arrow { transition: none; }
}