/* Seya / Yorusei — static site styles.
   Self-contained: no external fonts, no CDNs, no analytics.
   Palette per docs/BRANDING.md (dark teal base, iridescent accents). */

:root {
  --bg-0: #0d2222;
  --bg-1: #1a3a3a;
  --accent: #2a6b6b;
  --accent-bright: #4fd1c5;
  --lavender: #b9a7e0;
  --seafoam: #8fe3d2;
  --sky: #a8cfe8;
  --ink: #f2f7f7;
  --ink-dim: #b7c9c9;
  --ink-faint: #7f9696;
  --rule: rgba(255, 255, 255, 0.12);
  --card: rgba(255, 255, 255, 0.04);
  --max: 46rem;
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--bg-0);
  background-image:
    radial-gradient(60rem 40rem at 15% -10%, rgba(79, 209, 197, 0.10), transparent 60%),
    radial-gradient(50rem 35rem at 100% 0%, rgba(185, 167, 224, 0.10), transparent 55%);
  background-attachment: fixed;
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

.wrap {
  max-width: var(--max);
  margin: 0 auto;
  padding: 2.5rem 1.25rem 5rem;
}

/* ── Header ── */

header.site {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  padding-bottom: 1.5rem;
  margin-bottom: 2.5rem;
  border-bottom: 1px solid var(--rule);
}

.brand {
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--ink);
}

.brand span {
  background: linear-gradient(90deg, var(--seafoam), var(--sky) 45%, var(--lavender));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

nav.site a {
  color: var(--ink-dim);
  text-decoration: none;
  font-size: 0.9rem;
  margin-left: 1.1rem;
}

nav.site a:hover,
nav.site a[aria-current="page"] { color: var(--accent-bright); }

/* ── Typography ── */

h1 {
  font-size: clamp(1.9rem, 5vw, 2.6rem);
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin: 0 0 0.6rem;
  font-weight: 600;
}

h2 {
  font-size: 1.2rem;
  margin: 2.6rem 0 0.7rem;
  letter-spacing: -0.01em;
  font-weight: 600;
}

h3 {
  font-size: 1rem;
  margin: 1.7rem 0 0.5rem;
  color: var(--ink);
  font-weight: 600;
}

p { margin: 0 0 1.05rem; }

.lede {
  font-size: 1.1rem;
  color: var(--ink-dim);
  margin-bottom: 1.6rem;
}

.meta {
  font-size: 0.85rem;
  color: var(--ink-faint);
  margin-bottom: 2.2rem;
}

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

ul, ol { padding-left: 1.35rem; margin: 0 0 1.05rem; }
li { margin-bottom: 0.45rem; }

strong { color: var(--ink); font-weight: 600; }

code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.86em;
  background: rgba(255, 255, 255, 0.07);
  padding: 0.1em 0.38em;
  border-radius: 4px;
}

/* ── Components ── */

.card {
  background: var(--card);
  border: 1px solid var(--rule);
  border-radius: 14px;
  padding: 1.4rem 1.5rem;
  margin: 0 0 1.5rem;
}

.card h2 { margin-top: 0; }

.card.accent { border-color: rgba(79, 209, 197, 0.35); }

table {
  width: 100%;
  border-collapse: collapse;
  margin: 0 0 1.5rem;
  font-size: 0.92rem;
}

th, td {
  text-align: left;
  padding: 0.6rem 0.7rem;
  border-bottom: 1px solid var(--rule);
  vertical-align: top;
}

th {
  color: var(--ink);
  font-weight: 600;
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

td { color: var(--ink-dim); }

.scroll-x { overflow-x: auto; -webkit-overflow-scrolling: touch; }

.btn {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.18);
  padding: 0.7rem 1.4rem;
  border-radius: 10px;
  font-size: 0.95rem;
  font-weight: 500;
}

.btn:hover { background: #34807f; text-decoration: none; }

.btn.ghost {
  background: transparent;
  color: var(--ink-dim);
  border-color: var(--rule);
}

.btn.ghost:hover { background: var(--card); color: var(--ink); }

.cta-row { display: flex; gap: 0.75rem; flex-wrap: wrap; margin: 1.8rem 0; }

.note {
  border-left: 3px solid var(--accent-bright);
  padding: 0.1rem 0 0.1rem 1rem;
  color: var(--ink-dim);
  font-size: 0.94rem;
  margin: 0 0 1.5rem;
}

.pill {
  display: inline-block;
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--seafoam);
  border: 1px solid rgba(143, 227, 210, 0.4);
  border-radius: 999px;
  padding: 0.2rem 0.7rem;
  margin-bottom: 1rem;
}

/* ── Product card (studio landing) ── */

a.product {
  display: block;
  background: var(--card);
  border: 1px solid var(--rule);
  border-radius: 14px;
  padding: 1.4rem 1.5rem;
  margin: 0 0 1.5rem;
  color: var(--ink-dim);
  transition: border-color 0.15s ease, background 0.15s ease;
}

a.product:hover {
  border-color: rgba(79, 209, 197, 0.45);
  background: rgba(255, 255, 255, 0.06);
  text-decoration: none;
}

.product-head {
  display: flex;
  align-items: baseline;
  gap: 0.7rem;
  flex-wrap: wrap;
  margin-bottom: 0.5rem;
}

.product-name {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--ink);
  letter-spacing: -0.01em;
}

.product-tag {
  font-size: 0.72rem;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--seafoam);
}

.product-desc { display: block; margin-bottom: 0.7rem; }

.product-more {
  display: block;
  font-size: 0.9rem;
  color: var(--accent-bright);
}

/* ── Footer ── */

footer.site {
  margin-top: 4rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--rule);
  font-size: 0.85rem;
  color: var(--ink-faint);
}

footer.site a { color: var(--ink-dim); }
footer.site p { margin: 0 0 0.4rem; }

@media (max-width: 480px) {
  body { font-size: 16px; }
  .wrap { padding: 1.75rem 1.1rem 3.5rem; }
  nav.site a { margin-left: 0; margin-right: 1.1rem; }
}