/* www.santarh.net — light & minimal */
:root {
  --bg: #ffffff;
  --bg-subtle: #f6f7f9;
  --text: #1a202c;
  --text-muted: #5c6672;
  --accent: #0f6fd7;
  --border: #e4e7eb;
  --radius: 10px;
  --font: "Helvetica Neue", Arial, "Hiragino Kaku Gothic ProN",
          "Hiragino Sans", "BIZ UDPGothic", Meiryo, system-ui, sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.85;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: 760px;
  margin: 0 auto;
  padding: 0 1.25rem;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* Header */
.site-header {
  border-bottom: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(6px);
  position: sticky;
  top: 0;
  z-index: 10;
}
.site-header nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 3.25rem;
}
.brand {
  font-weight: 700;
  color: var(--text);
  letter-spacing: 0.01em;
}
.brand:hover { text-decoration: none; color: var(--accent); }
.nav-links {
  display: flex;
  gap: 1.25rem;
  align-items: center;
  font-size: 0.95rem;
}
.nav-links a { color: var(--text-muted); }
.nav-links a:hover { color: var(--accent); text-decoration: none; }
.lang-switch { color: var(--text-muted); }
.lang-switch a[aria-current="page"] { color: var(--text); font-weight: 600; }

/* Hero */
.hero {
  display: flex;
  gap: 1.75rem;
  align-items: center;
  padding: 3.5rem 0 2.5rem;
  flex-wrap: wrap;
}
.hero img {
  width: 108px;
  height: 108px;
  border-radius: 50%;
  border: 1px solid var(--border);
  flex-shrink: 0;
}
.hero h1 {
  margin: 0;
  font-size: 1.9rem;
  line-height: 1.35;
}
.hero .romaji {
  font-size: 1rem;
  font-weight: 400;
  color: var(--text-muted);
  margin-left: 0.4em;
}
.hero .tagline {
  margin: 0.35rem 0 0.75rem;
  font-size: 1.05rem;
  color: var(--text-muted);
}
.social {
  display: flex;
  gap: 0.9rem;
  font-size: 0.95rem;
}

/* Sections */
section { padding: 1.5rem 0; }
section h2 {
  font-size: 1.25rem;
  margin: 0 0 1rem;
  padding-bottom: 0.4rem;
  border-bottom: 1px solid var(--border);
  letter-spacing: 0.02em;
}
.lead { margin: 0; }
.lead + .lead { margin-top: 0.9rem; }

/* Cards (works / publications) */
.cards {
  display: grid;
  gap: 0.9rem;
  margin: 0;
  padding: 0;
  list-style: none;
}
.card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem 1.15rem;
  background: var(--bg);
}
.card h3 { margin: 0 0 0.25rem; font-size: 1.05rem; }
.card p { margin: 0; font-size: 0.95rem; color: var(--text-muted); }
.card .meta {
  display: inline-block;
  font-size: 0.8rem;
  color: var(--accent);
  background: color-mix(in srgb, var(--accent) 8%, white);
  border-radius: 999px;
  padding: 0.05rem 0.7rem;
  margin-bottom: 0.45rem;
}

/* Works sub-section (modest list) */
.works-sub { margin-top: 1.5rem; }
.works-sub h3 {
  font-size: 1rem;
  margin: 0 0 0.3rem;
  color: var(--text);
}
.works-sub p {
  margin: 0 0 0.4rem;
  font-size: 0.95rem;
  color: var(--text-muted);
}
.plain-list {
  margin: 0;
  padding-left: 1.3rem;
  font-size: 0.95rem;
}
.plain-list li { margin: 0.15rem 0; }

/* Skills */
.skills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin: 0;
  padding: 0;
  list-style: none;
}
.skills li {
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.25rem 0.9rem;
  font-size: 0.92rem;
  background: var(--bg-subtle);
}

/* Timeline */
.timeline {
  margin: 0;
  padding: 0;
  list-style: none;
  border-left: 2px solid var(--border);
}
.timeline li {
  position: relative;
  padding: 0 0 1.4rem 1.5rem;
}
.timeline li:last-child { padding-bottom: 0.2rem; }
.timeline li::before {
  content: "";
  position: absolute;
  left: -6px;
  top: 0.55em;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--accent);
}
.timeline time {
  display: block;
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* Article list */
.article-list { margin: 0; padding: 0; list-style: none; }
.article-list li {
  display: flex;
  gap: 1rem;
  align-items: baseline;
  padding: 0.5rem 0;
  border-bottom: 1px dashed var(--border);
}
.article-list time {
  font-size: 0.88rem;
  color: var(--text-muted);
  font-variant-numeric: tabular-nums;
  flex-shrink: 0;
}

/* Article body */
.article-header { padding: 2.5rem 0 0.5rem; }
.article-header h1 { margin: 0 0 0.3rem; font-size: 1.7rem; line-height: 1.4; }
.article-header time { color: var(--text-muted); font-size: 0.9rem; }
.article-body { padding-bottom: 3rem; }
.article-body h2 {
  font-size: 1.25rem;
  margin-top: 2.2rem;
  padding-bottom: 0.3rem;
  border-bottom: 1px solid var(--border);
}
.article-body img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius);
  border: 1px solid var(--border);
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--border);
  margin-top: 3rem;
  padding: 1.5rem 0;
  font-size: 0.85rem;
  color: var(--text-muted);
}
.site-footer p { margin: 0; }

@media (max-width: 560px) {
  .hero { padding-top: 2.25rem; gap: 1.25rem; }
  .hero h1 { font-size: 1.55rem; }
  .hero .romaji { display: block; margin-left: 0; }
}