/* =========================================================
   SO1RO.COM — Variant C (Bold / Brutalist + Neon)
   ========================================================= */

:root {
  --bg: #0a0a0a;
  --panel: #141414;
  --panel-2: #1c1c1c;
  --text: #f5f5f5;
  --muted: #7a7a7a;
  --accent: #00ff88;      /* neon green */
  --accent-2: #ff006e;    /* neon magenta */
  --border: 3px;
  --border-thick: 4px;

  --font-display: "Anton", "Noto Sans JP", sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  --font-body: "Noto Sans JP", system-ui, -apple-system, "Segoe UI", sans-serif;

  --maxw: 1240px;
  --pad-x: clamp(1.25rem, 4vw, 3rem);
}

*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; padding: 0; }

html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

/* ---------- Accessibility ---------- */
.visually-hidden {
  position: absolute !important;
  clip: rect(1px, 1px, 1px, 1px);
  width: 1px; height: 1px;
  overflow: hidden; white-space: nowrap;
}

.skip-link {
  position: absolute;
  top: -100px;
  left: 1rem;
  background: var(--accent);
  color: var(--bg);
  padding: 0.6rem 1rem;
  font-family: var(--font-mono);
  font-weight: 700;
  text-decoration: none;
  z-index: 999;
  border: var(--border-thick) solid var(--text);
}
.skip-link:focus { top: 1rem; }

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

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--bg);
  border-bottom: var(--border) solid var(--text);
}
.site-header__inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 1rem var(--pad-x);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  flex-wrap: wrap;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text);
  text-decoration: none;
  font-family: var(--font-display);
  font-size: 1.4rem;
  letter-spacing: 0.04em;
  line-height: 1;
}
.brand__mark {
  display: inline-grid;
  place-items: center;
  width: 2rem; height: 2rem;
  background: var(--accent);
  color: var(--bg);
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.85rem;
  border: var(--border) solid var(--text);
}
.brand__text { font-size: 1.5rem; }
.brand:hover .brand__mark { background: var(--accent-2); color: var(--text); }

.nav__list {
  list-style: none;
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
}
.nav__link {
  color: var(--text);
  text-decoration: none;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.85rem;
  letter-spacing: 0.1em;
  padding: 0.3rem 0;
  border-bottom: var(--border) solid transparent;
  transition: color 0.18s ease, border-color 0.18s ease;
}
.nav__link:hover,
.nav__link:focus-visible {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: min(92vh, 900px);
  padding: clamp(3rem, 8vh, 6rem) var(--pad-x) clamp(3rem, 6vh, 5rem);
  display: flex;
  align-items: center;
  border-bottom: var(--border-thick) solid var(--text);
  overflow: hidden;
}
.hero__inner {
  position: relative;
  max-width: var(--maxw);
  width: 100%;
  margin: 0 auto;
  z-index: 2;
}
.hero__scanlines {
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(
    to bottom,
    transparent 0,
    transparent 3px,
    rgba(255, 255, 255, 0.025) 3px,
    rgba(255, 255, 255, 0.025) 4px
  );
  pointer-events: none;
  z-index: 1;
}
.hero__corner {
  position: absolute;
  width: 60px;
  height: 60px;
  z-index: 2;
  pointer-events: none;
}
.hero__corner--tl {
  top: 1.25rem; left: 1.25rem;
  border-top: var(--border-thick) solid var(--accent);
  border-left: var(--border-thick) solid var(--accent);
}
.hero__corner--br {
  bottom: 1.25rem; right: 1.25rem;
  border-bottom: var(--border-thick) solid var(--accent-2);
  border-right: var(--border-thick) solid var(--accent-2);
}

.hero__meta {
  font-family: var(--font-mono);
  color: var(--accent);
  font-size: 0.85rem;
  letter-spacing: 0.15em;
  margin-bottom: 1.5rem;
  text-transform: uppercase;
}
.hero__title {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(4rem, 16vw, 12rem);
  line-height: 0.85;
  letter-spacing: -0.02em;
  margin-bottom: 2rem;
  text-transform: uppercase;
}
.hero__line {
  display: block;
}
.hero__line--accent {
  color: var(--bg);
  background: var(--accent);
  padding: 0 0.3em;
  display: inline-block;
  margin: 0.1em 0;
}
.hero__dot { color: var(--accent-2); }

.hero__sub {
  font-family: var(--font-body);
  font-size: clamp(1rem, 2.2vw, 1.35rem);
  font-weight: 700;
  line-height: 1.55;
  max-width: 680px;
  margin-bottom: 1.75rem;
}
.hero__handle {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  color: var(--muted);
  border-top: var(--border) solid var(--text);
  padding-top: 1rem;
  display: inline-block;
}
.hero__handle-key { color: var(--accent); font-weight: 700; }
.hero__handle-val { color: var(--text); font-weight: 700; margin-left: 0.1em; }

/* ---------- Section Common ---------- */
section.reveal,
section.manifesto,
section.about,
section.works,
section.stack,
section.links {
  padding: clamp(3.5rem, 8vh, 6rem) var(--pad-x);
  max-width: var(--maxw);
  margin: 0 auto;
}

.section-title {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 1rem 1.25rem;
  margin-bottom: 2.5rem;
  border-bottom: var(--border-thick) solid var(--text);
  padding-bottom: 1rem;
}
.section-title__num {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  color: var(--accent);
  font-weight: 700;
  letter-spacing: 0.1em;
}
.section-title__en {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 400;
  line-height: 1;
  letter-spacing: 0.01em;
  text-transform: uppercase;
}
.section-title__jp {
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--muted);
  letter-spacing: 0.1em;
}

/* ---------- Manifesto ---------- */
.manifesto__list {
  list-style: none;
  display: grid;
  gap: 1.25rem;
}
.manifesto__item {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 5vw, 3rem);
  line-height: 1.15;
  letter-spacing: 0.01em;
  padding-left: 1.25rem;
  border-left: var(--border-thick) solid var(--accent);
}
.manifesto__item:nth-child(2) { border-left-color: var(--text); }
.manifesto__item:nth-child(3) { border-left-color: var(--accent); }
.manifesto__item--accent {
  font-family: var(--font-body);
  font-weight: 700;
  font-size: clamp(1.1rem, 2vw, 1.45rem);
  line-height: 1.6;
  color: var(--accent-2);
  border-left-color: var(--accent-2);
  padding: 1rem 1.25rem;
  background: var(--panel);
  margin-top: 1rem;
}

/* ---------- About ---------- */
.about__grid {
  display: grid;
  grid-template-columns: minmax(0, 2fr) minmax(0, 1fr);
  gap: 2.5rem;
}
@media (max-width: 760px) {
  .about__grid { grid-template-columns: 1fr; }
}
.about__lead {
  font-family: var(--font-body);
  font-weight: 700;
  font-size: clamp(1.15rem, 2.2vw, 1.45rem);
  line-height: 1.6;
  margin-bottom: 1.25rem;
  border-left: var(--border-thick) solid var(--accent);
  padding-left: 1rem;
}
.about__text {
  margin-bottom: 1rem;
  color: var(--text);
}
.about__meta {
  background: var(--panel);
  border: var(--border) solid var(--text);
  padding: 1.25rem;
  display: grid;
  gap: 0.85rem;
  align-self: start;
  font-family: var(--font-mono);
  font-size: 0.9rem;
}
.about__row {
  display: grid;
  grid-template-columns: 90px 1fr;
  gap: 0.75rem;
  border-bottom: 1px dashed var(--muted);
  padding-bottom: 0.6rem;
}
.about__row:last-child { border-bottom: none; padding-bottom: 0; }
.about__row dt {
  color: var(--accent);
  font-weight: 700;
  letter-spacing: 0.08em;
}
.about__row dd {
  color: var(--text);
}

/* ---------- Works ---------- */
.works__intro {
  font-family: var(--font-body);
  font-size: 1.05rem;
  margin-bottom: 2rem;
  color: var(--text);
}
.works__count {
  font-family: var(--font-mono);
  color: var(--accent);
  font-weight: 700;
  margin-left: 0.4em;
}

.works__grid {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 1.25rem;
}
@media (max-width: 900px) {
  .works__grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 540px) {
  .works__grid { grid-template-columns: 1fr; }
}

.work {
  grid-column: span 2;
  background: var(--panel);
  border: var(--border) solid var(--text);
  position: relative;
  transition: transform 0.22s ease, border-color 0.22s ease, box-shadow 0.22s ease;
}
.work--lg { grid-column: span 3; }
@media (max-width: 900px) {
  .work, .work--lg { grid-column: span 1; }
}

.work__link {
  display: block;
  color: var(--text);
  text-decoration: none;
  height: 100%;
}
.work__thumb {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  border-bottom: var(--border) solid var(--text);
  background: var(--panel-2);
}
.work__thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease, filter 0.4s ease;
  filter: contrast(1.05) saturate(0.95);
}
.work__body {
  padding: 1.25rem;
}
.work__num {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.15em;
  margin-bottom: 0.4rem;
}
.work__title {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(1.25rem, 2.2vw, 1.65rem);
  line-height: 1.15;
  letter-spacing: 0.01em;
  margin-bottom: 0.5rem;
  text-transform: none;
}
.work__desc {
  font-family: var(--font-body);
  font-size: 0.93rem;
  color: var(--text);
  margin-bottom: 0.85rem;
  line-height: 1.55;
}
.work__tech {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--muted);
  letter-spacing: 0.04em;
}

.work:hover,
.work:focus-within {
  transform: translate(-3px, -3px);
  border-color: var(--accent);
  box-shadow: 6px 6px 0 var(--accent-2), 0 0 24px rgba(0, 255, 136, 0.25);
}
.work:hover .work__thumb img,
.work:focus-within .work__thumb img {
  transform: scale(1.04);
  filter: contrast(1.1) saturate(1.1);
}
.work:hover .work__title,
.work:focus-within .work__title {
  color: var(--accent);
}

/* ---------- Stack ---------- */
.stack__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.25rem;
}
.stack__group {
  background: var(--panel);
  border: var(--border) solid var(--text);
  padding: 1.25rem;
  transition: border-color 0.2s ease;
}
.stack__group:hover { border-color: var(--accent); }

.stack__heading {
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 1.05rem;
  margin-bottom: 0.85rem;
  color: var(--text);
  border-bottom: 1px solid var(--muted);
  padding-bottom: 0.5rem;
}
.stack__idx {
  font-family: var(--font-mono);
  color: var(--accent);
  margin-right: 0.5rem;
  font-weight: 700;
  letter-spacing: 0.05em;
}
.stack__list {
  list-style: none;
  display: grid;
  gap: 0.4rem;
  font-family: var(--font-mono);
  font-size: 0.9rem;
}
.stack__list li {
  padding-left: 1rem;
  position: relative;
  color: var(--text);
}
.stack__list li::before {
  content: "›";
  position: absolute;
  left: 0;
  color: var(--accent);
  font-weight: 700;
}

/* ---------- Links ---------- */
.links__lead {
  font-family: var(--font-body);
  margin-bottom: 1.75rem;
  font-size: 1.05rem;
}
.links__list { list-style: none; display: grid; gap: 0.85rem; }
.links__link {
  display: grid;
  grid-template-columns: 1fr auto auto;
  align-items: center;
  gap: 1rem;
  padding: 1.1rem 1.25rem;
  background: var(--panel);
  border: var(--border) solid var(--text);
  color: var(--text);
  text-decoration: none;
  font-family: var(--font-mono);
  font-weight: 700;
  letter-spacing: 0.04em;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}
.links__label {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 1.4rem;
  letter-spacing: 0.02em;
}
.links__handle {
  color: var(--muted);
  font-size: 0.85rem;
}
.links__arrow {
  font-size: 1.3rem;
  color: var(--accent);
  transition: transform 0.2s ease, color 0.2s ease;
}
.links__link:hover,
.links__link:focus-visible {
  background: var(--accent);
  color: var(--bg);
  border-color: var(--accent-2);
  transform: translate(-2px, -2px);
}
.links__link:hover .links__handle,
.links__link:focus-visible .links__handle { color: var(--bg); }
.links__link:hover .links__arrow,
.links__link:focus-visible .links__arrow {
  color: var(--bg);
  transform: translateX(4px);
}

/* ---------- Footer ---------- */
.footer {
  margin-top: 4rem;
  border-top: var(--border-thick) solid var(--text);
  background: var(--panel);
}
.footer__inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 2.5rem var(--pad-x);
}
.footer__top {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 1.75rem;
  padding-bottom: 1.25rem;
  border-bottom: 1px solid var(--muted);
}
.footer__brand {
  font-family: var(--font-display);
  font-size: 2rem;
  color: var(--text);
  letter-spacing: 0.02em;
}
.footer__tag {
  font-family: var(--font-mono);
  color: var(--accent);
  font-size: 0.85rem;
  font-weight: 700;
}
.footer__legal {
  font-family: var(--font-body);
  font-size: 0.85rem;
  color: var(--muted);
  line-height: 1.7;
  display: grid;
  gap: 0.85rem;
}
.footer__copy { color: var(--text); font-weight: 700; }
.footer__privacy, .footer__tm { color: var(--muted); }
.footer__plain-link {
  color: var(--accent);
  text-decoration: underline;
  margin-left: 0.4em;
}
.footer__plain-link:hover, .footer__plain-link:focus-visible { color: var(--accent-2); }

/* ---------- Reveal animation ---------- */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.4s ease, transform 0.4s ease;
}
.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  .work, .links__link, .stack__group {
    transition: none;
  }
  .work:hover, .work:focus-within,
  .links__link:hover, .links__link:focus-visible {
    transform: none;
  }
}

/* ---------- Privacy / 404 page common ---------- */
.legal-page {
  max-width: 820px;
  margin: 0 auto;
  padding: clamp(2.5rem, 6vh, 4.5rem) var(--pad-x);
  font-family: var(--font-body);
  line-height: 1.85;
}
.legal-page h1 {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 6vw, 4rem);
  margin-bottom: 1.5rem;
  text-transform: uppercase;
  letter-spacing: 0.01em;
  border-bottom: var(--border-thick) solid var(--accent);
  padding-bottom: 0.75rem;
}
.legal-page h2 {
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 1.25rem;
  margin: 2rem 0 0.75rem;
  color: var(--accent);
}
.legal-page p { margin-bottom: 1rem; }
.legal-page ul { margin: 0 0 1rem 1.5rem; }
.legal-page li { margin-bottom: 0.4rem; }
.legal-page a { color: var(--accent); text-decoration: underline; }
.legal-page a:hover, .legal-page a:focus-visible { color: var(--accent-2); }
.legal-page .back {
  display: inline-block;
  margin-top: 2rem;
  font-family: var(--font-mono);
  font-weight: 700;
  padding: 0.6rem 1rem;
  border: var(--border) solid var(--text);
  color: var(--text);
  text-decoration: none;
}
.legal-page .back:hover, .legal-page .back:focus-visible {
  background: var(--accent);
  color: var(--bg);
  border-color: var(--accent-2);
}

/* 404 specific */
.not-found {
  min-height: 80vh;
  display: grid;
  place-items: center;
  padding: 3rem var(--pad-x);
  text-align: center;
}
.not-found__code {
  font-family: var(--font-display);
  font-size: clamp(6rem, 22vw, 16rem);
  line-height: 0.9;
  letter-spacing: -0.03em;
  color: var(--text);
}
.not-found__code-accent { color: var(--accent); }
.not-found__label {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: 0.2em;
  color: var(--accent-2);
  margin: 1rem 0 2rem;
}
.not-found__msg {
  font-family: var(--font-body);
  font-weight: 700;
  font-size: clamp(1.1rem, 2.4vw, 1.5rem);
  margin-bottom: 2rem;
}