/* ============================================================
   NAK3D FITNESS CLUB — styles
   Brand: MOVE NAKED. RUN FREE.
   Palette: ink / cream / acid / char
============================================================ */

:root {
  --ink:   #0A0A0A;
  --cream: #F3F0EA;
  --acid:  #C4F82A;
  --char:  #1A1A1A;
  --mute:  #8C8C8C;
  --edge:  rgba(255,255,255,0.08);
  --edge-d: rgba(10,10,10,0.12);

  --f-sans: -apple-system, BlinkMacSystemFont, "Helvetica Neue", "Arial", "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", sans-serif;
  --f-mono: "SF Mono", "Consolas", "Courier New", monospace;

  --trk: 0.08em;
  --trk-tight: -0.03em;
  --trk-wide: 0.28em;

  --max: 1440px;
  --pad-x: clamp(1.25rem, 4vw, 3.5rem);
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--ink);
  color: var(--cream);
  font-family: var(--f-sans);
  font-weight: 400;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; margin: 0; padding: 0; }
button { font: inherit; border: 0; background: none; cursor: pointer; color: inherit; }
p { margin: 0 0 1rem; }

::selection { background: var(--acid); color: var(--ink); }

/* ---------- Wordmark ---------- */
.wordmark {
  font-family: var(--f-sans);
  font-weight: 900;
  letter-spacing: var(--trk-tight);
  line-height: 0.85;
  display: inline-block;
}
.wordmark .three {
  color: var(--acid);
  display: inline-block;
  transform: translateY(0.02em);
}
.wordmark--xl {
  font-size: clamp(5.5rem, 22vw, 20rem);
}
.wordmark--sm { font-size: 1.35rem; letter-spacing: -0.02em; }

/* ---------- Nav ---------- */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.9rem var(--pad-x);
  background: rgba(10,10,10,0.72);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--edge);
}
.nav__mark { color: var(--cream); }
.nav__links {
  display: flex;
  gap: 1.75rem;
  font-size: 0.78rem;
  letter-spacing: var(--trk-wide);
  font-weight: 600;
}
.nav__links a {
  position: relative;
  padding: 0.35rem 0;
  transition: color 0.2s;
}
.nav__links a:hover { color: var(--acid); }
.nav__cta {
  color: var(--ink) !important;
  background: var(--acid);
  padding: 0.55rem 0.9rem !important;
  border-radius: 999px;
}
.nav__cta:hover { background: var(--cream); color: var(--ink) !important; }
.nav__burger { display: none; }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: 100vh;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 6rem var(--pad-x) 0;
  background: radial-gradient(ellipse at 50% 40%, #141414 0%, #0A0A0A 70%);
  overflow: hidden;
  isolation: isolate;
}
.hero__grain {
  position: absolute; inset: 0;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='160' height='160'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 1  0 0 0 0 1  0 0 0 0 1  0 0 0 0.06 0'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
  opacity: 0.55;
  pointer-events: none;
  mix-blend-mode: overlay;
  z-index: 0;
}
.hero__inner {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: var(--max);
  width: 100%;
}
.stamp {
  font-family: var(--f-mono);
  font-size: 0.72rem;
  letter-spacing: var(--trk-wide);
  color: var(--mute);
  margin-bottom: 1.25rem;
}
.wordmark--xl {
  margin: 0;
  display: block;
}
.hero__row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: min(100%, 800px);
  margin: 0.5rem auto 0;
  padding: 0 0.5rem;
  font-family: var(--f-mono);
  font-size: 0.8rem;
  letter-spacing: var(--trk-wide);
  color: var(--mute);
}
.hero__dot {
  width: 6px; height: 6px;
  background: var(--acid);
  border-radius: 50%;
  box-shadow: 0 0 16px var(--acid);
}
.tagline {
  margin-top: 2.25rem;
  font-family: var(--f-mono);
  font-size: 0.82rem;
  letter-spacing: var(--trk-wide);
  color: var(--cream);
  opacity: 0.7;
}

/* ---------- CTA buttons ---------- */
.cta {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: var(--trk-wide);
  padding: 1rem 1.5rem;
  border-radius: 999px;
  transition: transform 0.2s, background 0.2s, color 0.2s;
}
.cta--primary {
  background: var(--acid);
  color: var(--ink);
  margin-top: 2.5rem;
}
.cta--primary:hover { transform: translateY(-2px); background: var(--cream); }
.cta--ghost {
  border: 1px solid var(--edge);
  color: var(--cream);
  margin-top: 1.75rem;
}
.cta--ghost:hover { border-color: var(--acid); color: var(--acid); }
.cta--mail {
  background: var(--ink);
  color: var(--acid);
  border: 1px solid var(--acid);
  margin: 1rem 0 1.5rem;
  font-family: var(--f-mono);
  font-size: 0.82rem;
}
.cta--mail:hover { background: var(--acid); color: var(--ink); }
.cta__arrow { font-size: 1rem; line-height: 1; }

/* ---------- Ticker ---------- */
.ticker {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  overflow: hidden;
  border-top: 1px solid var(--edge);
  padding: 0.9rem 0;
  z-index: 3;
  background: rgba(10,10,10,0.6);
}
.ticker__track {
  display: flex;
  gap: 3rem;
  white-space: nowrap;
  animation: ticker 32s linear infinite;
  font-family: var(--f-mono);
  font-size: 0.72rem;
  letter-spacing: var(--trk-wide);
  color: var(--acid);
}
@keyframes ticker {
  from { transform: translateX(0); }
  to   { transform: translateX(-33.333%); }
}

/* ---------- Section shared ---------- */
.about__label, .runs__label, .gallery__label, .join__label {
  font-family: var(--f-mono);
  font-size: 0.72rem;
  letter-spacing: var(--trk-wide);
  color: var(--mute);
  margin-bottom: 2.5rem;
}
.section-h {
  font-family: var(--f-sans);
  font-weight: 900;
  font-size: clamp(2rem, 5vw, 3.5rem);
  letter-spacing: var(--trk-tight);
  line-height: 1;
  margin: 0 0 1.5rem;
}

/* ---------- About ---------- */
.about {
  background: var(--cream);
  color: var(--ink);
  padding: 7rem var(--pad-x) 6rem;
}
.about__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3.5rem;
  max-width: var(--max);
  margin: 0 auto;
}
.about__col p {
  font-size: 1.075rem;
  line-height: 1.65;
  max-width: 48ch;
}
.about__col--cn p {
  font-family: var(--f-sans);
  letter-spacing: 0.01em;
}
.values {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 2rem;
  margin-top: 5rem;
  padding-top: 3rem;
  border-top: 1px solid var(--edge-d);
  font-family: var(--f-mono);
  font-size: 1rem;
  letter-spacing: var(--trk-wide);
  font-weight: 700;
}
.values__dot {
  width: 6px; height: 6px;
  background: var(--acid);
  border-radius: 50%;
}

/* ---------- Runs ---------- */
.runs {
  background: var(--char);
  color: var(--cream);
  padding: 7rem var(--pad-x) 6rem;
}
.runs__next {
  max-width: var(--max);
  margin: 0 auto;
  background: var(--ink);
  border: 1px solid var(--edge);
  border-radius: 6px;
  padding: clamp(1.75rem, 4vw, 3rem);
  display: grid;
  gap: 1.5rem;
}
.runs__next-kicker {
  font-family: var(--f-mono);
  font-size: 0.72rem;
  letter-spacing: var(--trk-wide);
  color: var(--acid);
}
.runs__next-body {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 3rem;
  align-items: center;
}
.runs__next-date {
  display: flex;
  flex-direction: column;
  line-height: 0.95;
  font-weight: 900;
  letter-spacing: var(--trk-tight);
}
.runs__next-day { font-size: clamp(1.5rem, 2.5vw, 2.25rem); color: var(--mute); }
.runs__next-num { font-size: clamp(4rem, 9vw, 7rem); color: var(--acid); }
.runs__next-mo  { font-size: clamp(1.25rem, 2vw, 1.75rem); color: var(--cream); }
.runs__next-meta { display: grid; gap: 0.6rem; }
.meta-row {
  display: grid;
  grid-template-columns: 9rem 1fr;
  gap: 1rem;
  align-items: baseline;
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--edge);
  font-family: var(--f-mono);
  font-size: 0.85rem;
}
.meta-row:last-child { border-bottom: 0; }
.meta-k { color: var(--mute); letter-spacing: var(--trk-wide); }
.meta-v { color: var(--cream); font-weight: 700; letter-spacing: 0.02em; }

.schedule {
  max-width: var(--max);
  margin: 4rem auto 0;
}
.schedule__kicker {
  font-family: var(--f-mono);
  font-size: 0.72rem;
  letter-spacing: var(--trk-wide);
  color: var(--mute);
  margin-bottom: 1.5rem;
}
.schedule__list {
  border-top: 1px solid var(--edge);
}
.schedule__list li {
  display: grid;
  grid-template-columns: 1.25fr 0.75fr 2fr auto;
  gap: 1.5rem;
  align-items: center;
  padding: 1.25rem 0.25rem;
  border-bottom: 1px solid var(--edge);
  font-family: var(--f-mono);
  font-size: 0.9rem;
  transition: background 0.2s;
}
.schedule__list li:hover { background: rgba(196,248,42,0.04); }
.s-day  { font-weight: 700; letter-spacing: var(--trk-wide); }
.s-time { color: var(--acid); font-weight: 700; }
.s-loc  { color: var(--cream); opacity: 0.85; }
.s-tag  {
  justify-self: end;
  font-size: 0.7rem;
  letter-spacing: var(--trk-wide);
  padding: 0.25rem 0.65rem;
  border: 1px solid var(--edge);
  border-radius: 2px;
  color: var(--mute);
}
.schedule__note {
  margin-top: 2rem;
  color: var(--mute);
  font-family: var(--f-mono);
  font-size: 0.8rem;
  letter-spacing: 0.05em;
  line-height: 1.7;
}

/* ---------- Gallery ---------- */
.gallery {
  background: var(--ink);
  padding: 7rem var(--pad-x) 6rem;
}
.gallery__grid {
  max-width: var(--max);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.5rem;
}
.tile {
  position: relative;
  margin: 0;
  aspect-ratio: 4/5;
  background: var(--char);
  overflow: hidden;
  border: 1px solid var(--edge);
  transition: transform 0.3s, border-color 0.3s;
}
.tile:hover { transform: scale(1.01); border-color: var(--acid); }
.tile::before {
  content: "";
  position: absolute; inset: 0;
  background:
    linear-gradient(135deg, rgba(196,248,42,0.05) 0%, transparent 50%),
    repeating-linear-gradient(45deg, rgba(255,255,255,0.02) 0 2px, transparent 2px 12px);
  z-index: 1;
}
.tile::after {
  content: "";
  position: absolute;
  left: 50%; top: 50%;
  transform: translate(-50%, -50%);
  width: 48px; height: 48px;
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: 50%;
  z-index: 1;
}
.tile--1::after { background: radial-gradient(circle, rgba(196,248,42,0.2), transparent 60%); }
.tile--2 { background: linear-gradient(180deg, #0A0A0A, #1a1a1a); }
.tile--3::before { background: repeating-linear-gradient(-45deg, rgba(196,248,42,0.08) 0 1px, transparent 1px 20px); }
.tile--4 { background: linear-gradient(45deg, #141414, #0A0A0A 70%); }
.tile--5::after {
  width: 80px; height: 80px;
  background: radial-gradient(circle, rgba(196,248,42,0.25), transparent 70%);
  border: 0;
}
.tile--6 { background: radial-gradient(ellipse at top, #1a1a1a, #0A0A0A); }
.tile figcaption {
  position: absolute;
  bottom: 0.75rem;
  left: 0.75rem;
  z-index: 2;
  font-family: var(--f-mono);
  font-size: 0.68rem;
  letter-spacing: var(--trk-wide);
  color: var(--cream);
  opacity: 0.85;
  background: rgba(10,10,10,0.6);
  backdrop-filter: blur(4px);
  padding: 0.3rem 0.55rem;
  border-radius: 2px;
}
.gallery__note {
  max-width: var(--max);
  margin: 2.5rem auto 0;
  color: var(--mute);
  font-family: var(--f-mono);
  font-size: 0.8rem;
  letter-spacing: 0.05em;
}

/* ---------- Join ---------- */
.join {
  position: relative;
  background: var(--cream);
  color: var(--ink);
  padding: 0 var(--pad-x) 6rem;
}
.join__stripe {
  position: relative;
  top: 0;
  height: 16px;
  background: var(--acid);
  margin: 0 calc(-1 * var(--pad-x)) 5rem;
}
.join__label {
  color: rgba(10,10,10,0.55) !important;
}
.join__grid {
  max-width: var(--max);
  margin: 0 auto;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: clamp(2rem, 5vw, 5rem);
  align-items: start;
}
.join__qr { display: flex; justify-content: center; }
.qr {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}
.qr__inner {
  width: clamp(200px, 22vw, 280px);
  aspect-ratio: 1;
  background: var(--ink);
  display: flex; align-items: center; justify-content: center;
  border-radius: 10px;
  padding: 1rem;
  box-shadow: 0 8px 32px rgba(0,0,0,0.18);
  position: relative;
}
.qr__inner::before {
  content: "";
  position: absolute; inset: 12px;
  border: 2px dashed var(--acid);
  border-radius: 6px;
  opacity: 0.5;
}
.qr__plc {
  font-family: var(--f-sans);
  color: var(--acid);
  text-align: center;
  font-weight: 900;
  font-size: 1.1rem;
  line-height: 1.3;
  letter-spacing: 0.05em;
}
.qr__plc small {
  display: inline-block;
  margin-top: 0.5rem;
  font-size: 0.7rem;
  letter-spacing: var(--trk-wide);
  color: var(--mute);
  font-weight: 400;
}
.qr__cap {
  font-family: var(--f-mono);
  font-size: 0.75rem;
  letter-spacing: var(--trk-wide);
  color: var(--ink);
  opacity: 0.7;
}
.join__info p { font-size: 1rem; max-width: 48ch; }
.socials {
  display: flex;
  flex-direction: column;
  gap: 0;
  border-top: 1px solid var(--edge-d);
  margin-top: 2rem;
}
.soc {
  display: grid;
  grid-template-columns: 7rem 1fr auto;
  gap: 1rem;
  padding: 1rem 0.25rem;
  border-bottom: 1px solid var(--edge-d);
  font-family: var(--f-mono);
  font-size: 0.85rem;
  transition: background 0.2s, padding-left 0.2s;
}
.soc:hover { background: rgba(196,248,42,0.15); padding-left: 1rem; }
.soc::after {
  content: "↗";
  color: var(--ink);
  opacity: 0.5;
  font-size: 1rem;
}
.soc__mark { font-weight: 700; letter-spacing: 0.05em; }
.soc__handle { color: rgba(10,10,10,0.65); }

/* ---------- Footer ---------- */
.foot {
  background: var(--ink);
  color: var(--mute);
  padding: 2.5rem var(--pad-x);
  border-top: 1px solid var(--edge);
}
.foot__row {
  max-width: var(--max);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  flex-wrap: wrap;
  font-family: var(--f-mono);
  font-size: 0.72rem;
  letter-spacing: var(--trk-wide);
}
.foot__mark { color: var(--cream); }
.foot__tag { color: var(--acid); }

/* ---------- Responsive ---------- */
@media (max-width: 880px) {
  .nav__links {
    position: fixed;
    top: 0; right: 0;
    height: 100vh; height: 100svh;
    width: min(78vw, 320px);
    background: var(--ink);
    flex-direction: column;
    justify-content: center;
    align-items: flex-start;
    padding: 3rem 2rem;
    gap: 2rem;
    border-left: 1px solid var(--edge);
    transform: translateX(100%);
    transition: transform 0.3s ease;
  }
  .nav.is-open .nav__links { transform: translateX(0); }
  .nav__links a { font-size: 1rem; }
  .nav__burger {
    display: flex;
    flex-direction: column;
    gap: 5px;
    width: 28px;
    height: 22px;
    justify-content: center;
    z-index: 60;
  }
  .nav__burger span {
    display: block;
    width: 100%; height: 2px;
    background: var(--cream);
    transition: transform 0.3s, opacity 0.3s;
  }
  .nav.is-open .nav__burger span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .nav.is-open .nav__burger span:nth-child(2) { opacity: 0; }
  .nav.is-open .nav__burger span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

  .about__grid { grid-template-columns: 1fr; gap: 2.5rem; }
  .runs__next-body { grid-template-columns: 1fr; gap: 1.5rem; }
  .schedule__list li { grid-template-columns: 1fr 1fr; row-gap: 0.3rem; }
  .s-loc { grid-column: 1 / -1; opacity: 0.7; font-size: 0.82rem; }
  .s-tag { grid-column: 2; justify-self: end; }
  .gallery__grid { grid-template-columns: repeat(2, 1fr); }
  .join__grid { grid-template-columns: 1fr; text-align: left; }
  .join__qr { justify-content: flex-start; }
  .values { flex-wrap: wrap; gap: 1rem; font-size: 0.85rem; }
  .foot__row { flex-direction: column; text-align: center; }
}

@media (max-width: 520px) {
  .gallery__grid { grid-template-columns: 1fr; }
  .tile { aspect-ratio: 16/10; }
  .meta-row { grid-template-columns: 7rem 1fr; font-size: 0.78rem; }
  .tagline { font-size: 0.72rem; }
}

/* ---------- Prefers-reduced ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .ticker__track { animation: none; }
  .tile:hover { transform: none; }
}