/* ===== Design tokens ===== */
:root {
  --color-paper: #F5EFF0;
  --color-ink: #3A2E35;
  --color-stone: #83707A;
  --color-accent: #A8367C;
  --color-accent-soft: #FBE2EF;
  --color-line: #F0DCE8;

  --font-display: "M PLUS 1p", sans-serif;
  --font-body: "Zen Maru Gothic", sans-serif;
  --font-utility: "Noto Sans JP", sans-serif;

  --content-width: 70ch;
  --nav-height: 88px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
}

body {
  background: var(--color-paper);
  color: var(--color-ink);
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 20px;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 800;
  line-height: 1.35;
  margin: 0;
}

h1 { font-size: clamp(2.1rem, 4.5vw, 3.2rem); }
h2 { font-size: clamp(1.6rem, 3.2vw, 2.2rem); }
h3 { font-size: 1.25rem; font-weight: 700; }

p { margin: 0 0 1em 0; }

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

img { max-width: 100%; display: block; }

button { font-family: inherit; }

:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
}

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
}

/* ===== Layout shell ===== */
.wrap {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 24px;
}

.content-col {
  max-width: var(--content-width);
}

/* ===== Nav ===== */
.site-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: var(--nav-height);
  border-bottom: 1px solid var(--color-line);
}

.site-nav .wordmark {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.3rem;
  letter-spacing: 0.04em;
  color: var(--color-ink);
}

.site-nav .wordmark:hover { text-decoration: none; }

.nav-right {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav-links {
  display: flex;
  gap: 24px;
  font-family: var(--font-utility);
  font-size: 0.98rem;
}

.nav-links a {
  color: var(--color-stone);
}
.nav-links a[aria-current="page"] {
  color: var(--color-ink);
}

.lang-switch {
  font-family: var(--font-utility);
  font-size: 0.85rem;
  display: flex;
  gap: 6px;
  align-items: center;
}

.lang-switch button {
  background: none;
  border: none;
  color: var(--color-stone);
  cursor: pointer;
  padding: 4px 2px;
}

.lang-switch button[aria-pressed="true"] {
  color: var(--color-accent);
  font-weight: 700;
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-ink);
  margin: 5px 0;
}

/* ===== Stitch motif divider ===== */
.stitch-divider {
  display: flex;
  justify-content: center;
  margin: 64px 0;
}

.stitch-divider svg {
  width: 120px;
  height: 24px;
  stroke: var(--color-accent);
  opacity: 0.55;
}

/* ===== Brand watermark ===== */
.brand-mark {
  position: absolute;
  pointer-events: none;
  user-select: none;
  opacity: 0.10;
  z-index: 0;
}

.brand-mark--hero {
  top: -12%;
  right: -6%;
  width: 46%;
  max-width: 560px;
}

.brand-mark--cta {
  bottom: -18%;
  left: -6%;
  width: 32%;
  max-width: 380px;
}

.brand-mark--page {
  top: -6%;
  right: -4%;
  width: 22%;
  max-width: 220px;
  opacity: 0.08;
}

.closing-cta {
  position: relative;
  overflow: hidden;
}

.closing-cta h2,
.closing-cta .btn {
  position: relative;
  z-index: 1;
}

/* ===== Hero ===== */
.hero {
  position: relative;
  overflow: hidden;
  padding: 84px 0 72px;
}

.hero-content {
  position: relative;
  z-index: 1;
}

.hero h1 {
  max-width: 14ch;
  margin-bottom: 28px;
}

.hero .tagline {
  max-width: var(--content-width);
  color: var(--color-ink);
}

.hero .eyebrow {
  font-family: var(--font-utility);
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-stone);
  margin-bottom: 18px;
  display: block;
}

/* ===== Buttons ===== */
.btn {
  display: inline-block;
  font-family: var(--font-utility);
  font-size: 1.02rem;
  background: var(--color-accent);
  color: var(--color-paper);
  padding: 15px 30px;
  border-radius: 2px;
  margin-top: 12px;
}
.btn:hover {
  text-decoration: none;
  background: #5E3646;
}

/* ===== Sections ===== */
section {
  padding: 56px 0;
}

section.bordered-top {
  border-top: 1px solid var(--color-line);
}

.section-list {
  list-style: none;
  margin: 24px 0;
  padding: 0;
  display: grid;
  gap: 20px;
}

.section-list li {
  padding-left: 0;
}

.section-list strong {
  font-family: var(--font-utility);
  font-weight: 700;
}

.quote-line {
  font-family: var(--font-utility);
  font-size: 1.05rem;
  color: var(--color-stone);
  border-left: 2px solid var(--color-accent-soft);
  padding-left: 16px;
  margin: 32px 0;
}

.why-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  margin-top: 24px;
}

.why-grid .item h3 {
  margin-bottom: 10px;
  font-family: var(--font-utility);
  font-size: 1.1rem;
  font-weight: 700;
}

.industries-list {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 20px;
  list-style: none;
  padding: 0;
}

.industries-list li {
  font-family: var(--font-utility);
  font-size: 0.95rem;
  background: var(--color-accent-soft);
  color: var(--color-accent);
  padding: 8px 16px;
  border-radius: 2px;
}

/* ===== Services cards ===== */
.service-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-top: 32px;
}

.service-card {
  background: var(--color-accent-soft);
  padding: 28px;
  border-radius: 2px;
}

.service-card h3 {
  margin-bottom: 12px;
}

.service-card.muted {
  background: transparent;
  border: 1px solid var(--color-line);
}

/* ===== Page header (About/Services/Contact) ===== */
.page-header {
  position: relative;
  overflow: hidden;
  padding: 72px 0 24px;
}

.page-header h1,
.page-header .underline,
.page-header p {
  position: relative;
  z-index: 1;
}

.page-header .underline {
  width: 56px;
  height: 2px;
  background: var(--color-accent);
  margin: 18px 0 32px;
}

/* ===== Contact ===== */
.contact-methods {
  display: grid;
  gap: 18px;
  margin-top: 28px;
}

.contact-methods .method {
  font-family: var(--font-utility);
}

.contact-methods .method .label {
  color: var(--color-stone);
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  display: block;
  margin-bottom: 4px;
}

/* ===== Blog ===== */
.blog-list {
  display: grid;
  gap: 24px;
  margin-top: 32px;
}

.blog-card {
  border: 1px solid var(--color-line);
  border-radius: 2px;
  padding: 28px;
}

.blog-card .blog-date {
  font-family: var(--font-utility);
  font-size: 0.85rem;
  color: var(--color-stone);
  display: block;
  margin-bottom: 8px;
}

.blog-card h3 {
  margin-bottom: 10px;
}

.blog-card .blog-tags {
  font-family: var(--font-utility);
  font-size: 0.8rem;
  color: var(--color-accent);
  margin-top: 12px;
  display: block;
}

.tag-pill {
  background: none;
  border: none;
  padding: 0;
  font-family: inherit;
  font-size: inherit;
  color: var(--color-accent);
  cursor: pointer;
  text-decoration: underline;
  text-decoration-color: transparent;
}

.tag-pill:hover {
  text-decoration-color: var(--color-accent);
}

.blog-tag-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 32px;
}

.tag-filter-btn {
  font-family: var(--font-utility);
  font-size: 0.85rem;
  background: var(--color-accent-soft);
  color: var(--color-accent);
  border: 1px solid var(--color-line);
  border-radius: 999px;
  padding: 6px 16px;
  cursor: pointer;
}

.tag-filter-btn:hover {
  border-color: var(--color-accent);
}

.tag-filter-btn.is-active {
  background: var(--color-accent);
  color: var(--color-paper);
  border-color: var(--color-accent);
}

.blog-empty-state {
  font-family: var(--font-utility);
  color: var(--color-stone);
  text-align: center;
  padding: 24px 0;
}

.blog-post-meta {
  font-family: var(--font-utility);
  font-size: 0.9rem;
  color: var(--color-stone);
  margin-bottom: 32px;
}

.blog-post-body h2 {
  margin-top: 40px;
  margin-bottom: 12px;
  font-size: 1.4rem;
}

.blog-post-body ul {
  margin: 0 0 1em 1.2em;
}

.blog-post-body figure {
  margin: 24px 0;
}

.blog-post-body figure img {
  border: 1px solid var(--color-line);
  border-radius: 2px;
}

.blog-post-body figcaption {
  font-family: var(--font-utility);
  font-size: 0.85rem;
  color: var(--color-stone);
  margin-top: 8px;
}

.blog-post-body .figure-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin: 24px 0;
}

.blog-post-body .figure-row figure {
  margin: 0;
}

.video-placeholder {
  border: 1px dashed var(--color-stone);
  border-radius: 2px;
  padding: 32px;
  text-align: center;
  font-family: var(--font-utility);
  font-size: 0.9rem;
  color: var(--color-stone);
  margin: 24px 0;
}

.video-embed {
  position: relative;
  width: 100%;
  max-width: 640px;
  aspect-ratio: 16 / 9;
  margin: 24px 0;
  border-radius: 2px;
  overflow: hidden;
  background: var(--color-ink);
}

.video-embed iframe {
  position: absolute;
  top: 0; left: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

.blog-post-body pre {
  background: var(--color-ink);
  color: var(--color-paper);
  font-family: "Courier New", monospace;
  font-size: 0.85rem;
  line-height: 1.6;
  padding: 24px;
  border-radius: 2px;
  overflow-x: auto;
  margin: 24px 0;
}

.blog-post-body table.stack-summary {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  font-family: var(--font-utility);
  font-size: 0.95rem;
}

.blog-post-body table.stack-summary th,
.blog-post-body table.stack-summary td {
  border: 1px solid var(--color-line);
  padding: 10px 16px;
  text-align: left;
}

.blog-post-body table.stack-summary th {
  background: var(--color-accent-soft);
  font-weight: 700;
}

.external-watch-card {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  border: 1px solid var(--color-line);
  border-radius: 2px;
  padding: 14px 22px;
  margin: 24px 0;
  font-family: var(--font-utility);
  font-size: 0.95rem;
  color: var(--color-accent);
}

@media (max-width: 600px) {
  .blog-post-body .figure-row { grid-template-columns: 1fr; }
}

/* ===== Footer ===== */
.site-footer {
  border-top: 1px solid var(--color-line);
  padding: 40px 0 56px;
  font-family: var(--font-utility);
  font-size: 0.85rem;
  color: var(--color-stone);
}

.site-footer .footer-row {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

/* ===== Language visibility ===== */
/* default before JS runs: show ID, hide JA/EN */
[data-lang="ja"], [data-lang="en"] { display: none; }

body.lang-id [data-lang="ja"], body.lang-id [data-lang="en"] { display: none; }
body.lang-id [data-lang="id"] { display: inline; }

body.lang-ja [data-lang="id"], body.lang-ja [data-lang="en"] { display: none; }
body.lang-ja [data-lang="ja"] { display: inline; }

body.lang-en [data-lang="id"], body.lang-en [data-lang="ja"] { display: none; }
body.lang-en [data-lang="en"] { display: inline; }

noscript [data-lang="ja"], noscript [data-lang="en"] { display: none !important; }
noscript [data-lang="id"] { display: inline !important; }

/* ===== Responsive ===== */
@media (max-width: 760px) {
  .nav-links { display: none; }
  .nav-toggle { display: block; }
  .why-grid { grid-template-columns: 1fr; }
  .service-grid { grid-template-columns: 1fr; }
  .hero { padding: 56px 0 48px; }
  .site-footer .footer-row { flex-direction: column; }

  .nav-links--open {
    display: flex;
    flex-direction: column;
    gap: 16px;
    position: absolute;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background: var(--color-paper);
    border-bottom: 1px solid var(--color-line);
    padding: 20px 24px;
    z-index: 10;
  }

  .site-nav { position: relative; }
}