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

:root{
  --bg: #ffffff;
  --surface: #ffffff;
  --surface-2: #f8fafc; /* subtle panel */
  --text: #0f172a;      /* slate-900 */
  --muted: #475569;     /* slate-600 */
  --brand: #3056d3;     /* accessible blue for buttons/links */
  --brand-soft: #a8c7fa;/* your brand base tone for accents */
  --border: #e2e8f0;
  --shadow: 0 1px 2px rgba(16,24,40,.06), 0 6px 30px rgba(16,24,40,.10);
  --radius: 16px;
  --wrap: 1200px;
  --space: clamp(16px, 2vw, 24px);
  --space-lg: clamp(24px, 3vw, 36px);
  --fs-hero: clamp(22px, 3.2vw, 36px);
  --fs-title: clamp(16px, 2.1vw, 22px);
  --fs-body: clamp(14px, 1.6vw, 16px);
  --fs-mini: 12px;
}

html, body{
  height: 100%;
  margin: 0;
  color: var(--text);
  background:
    radial-gradient(1200px 600px at 50% -100px, color-mix(in oklab, var(--brand-soft), transparent 85%), transparent 50%),
    var(--bg);
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Noto Sans, "Hiragino Kaku Gothic ProN", "Yu Gothic UI", Meiryo, sans-serif;
  line-height: 1.6;
}

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

.wrapper{ width: min(100% - 2*var(--space), var(--wrap)); margin-inline: auto; padding-block: var(--space-lg); }
.site-head{ display: flex; align-items: center; justify-content: space-between; gap: var(--space); margin-bottom: var(--space-lg); }
.brand{ display: flex; align-items: center; gap: 12px; }
.brand .dot{ width: 14px; height: 14px; border-radius: 999px; background: var(--brand); box-shadow: 0 0 0 6px color-mix(in oklab, var(--brand), transparent 80%); }
.site-title{ font-size: var(--fs-hero); font-weight: 700; letter-spacing: .2px; }
.lead{ color: var(--muted); font-size: var(--fs-body); margin-top: 6px; }

.grid{ list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: clamp(16px, 2vw, 24px); }

.card{ background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); overflow: clip; display: grid; grid-template-rows: auto 1fr auto; min-height: 100%; transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease; }
.card:focus-visible{ outline: 3px solid color-mix(in oklab, var(--brand), white 10%); outline-offset: 3px; }
.card:hover{ transform: translateY(-2px); box-shadow: 0 4px 10px rgba(0,0,0,.12), 0 12px 40px rgba(0,0,0,.20); border-color: color-mix(in oklab, var(--brand), var(--border) 50%); }

.card-media{ aspect-ratio: 21 / 9; background: var(--surface-2); border-bottom: 1px solid var(--border); }
.card-media img{ width: 100%; height: 100%; object-fit: cover; }

.card-body{ padding: clamp(14px, 2.2vw, 18px); display: grid; gap: 6px; }
.card-title{ font-size: var(--fs-title); font-weight: 700; }
.card-desc{ color: var(--muted); font-size: var(--fs-body); }
.card-cta{ margin-top: 6px; font-size: var(--fs-mini); letter-spacing: .3px; color: var(--brand); }

.article{ display: grid; gap: var(--space); }
.hero{ aspect-ratio: 16 / 9; background: var(--surface-2); border: 1px solid var(--border); border-radius: var(--radius); overflow: clip; box-shadow: var(--shadow); }
.hero img{ width: 100%; height: 100%; object-fit: cover; }

.meta{ display: grid; gap: 8px; color: var(--muted); font-size: var(--fs-mini); }
hr.sep{ border: none; border-top: 1px solid var(--border); margin: var(--space) 0; }

.back{ display: inline-flex; align-items: center; gap: 8px; padding: 8px 12px; border: 1px solid var(--border); border-radius: 999px; background: var(--surface); transition: background .2s ease, border-color .2s ease, transform .2s ease; }
.back:hover{ transform: translateY(-1px); border-color: color-mix(in oklab, var(--brand), var(--border) 60%); }
.back svg{ inline-size: 18px; block-size: 18px; }

@media (prefers-reduced-motion: reduce){
  .card, .back{ transition: none; }
}


/* === Two-column article layout (project1) === */
.article.two-col{
  display: grid;
  grid-template-columns: minmax(280px, 1fr) 1.2fr;
  gap: var(--space-lg);
  align-items: start;
}
.stack{ display: grid; gap: var(--space); align-content: start; }
@media (max-width: 900px){
  .article.two-col{ grid-template-columns: 1fr; }
}


@media (prefers-color-scheme: dark){
  :root{
    --bg: #0b0b0c;
    --surface: #121315;
    --surface-2: #191b1f;
    --text: #f5f7fa;
    --muted: #9aa4b2;
    --brand: #5b8cff;
    --brand-soft: #8fb3ff;
    --border: #262a31;
    --shadow: 0 1px 2px rgba(0,0,0,.08), 0 6px 30px rgba(0,0,0,.22);
  }
}


/* Buttons */
.btn{
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 14px;
  border-radius: 999px;
  background: var(--brand);
  color: #fff;
  border: 1px solid color-mix(in oklab, var(--brand), black 12%);
  box-shadow: var(--shadow);
  font-weight: 600;
  text-decoration: none;
  transition: transform .15s ease, background .2s ease, box-shadow .2s ease;
}
.btn:hover{ transform: translateY(-1px); background: color-mix(in oklab, var(--brand), black 12%); }
.btn:focus-visible{ outline: 3px solid color-mix(in oklab, var(--brand), white 40%); outline-offset: 2px; }
.btn.view-work{ margin-top: 12px; }

/* Left column wrapper in two-col layout */
.left{
  display: grid;
  gap: var(--space);
  align-content: start;
}