/* ============================================
   AKIRA KAMIO — Photographer Portfolio
   black / minimal / photo-first
   ============================================ */

:root {
  --bg: #0a0a0a;
  --bg-soft: #111111;
  --text: #e8e8e6;
  --text-dim: #9a9a96;
  --line: #2a2a2a;
  --accent: #7fa8b8;
  --serif: "Hiragino Mincho ProN", "Yu Mincho", "Noto Serif JP", serif;
  --sans: "Helvetica Neue", Helvetica, "Hiragino Kaku Gothic ProN", "Yu Gothic", Arial, sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-weight: 300;
  letter-spacing: 0.02em;
  -webkit-font-smoothing: antialiased;
}

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

a { color: inherit; text-decoration: none; }

/* ---------- Header ---------- */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 28px 40px;
  mix-blend-mode: difference;
}

.brand {
  font-size: 15px;
  letter-spacing: 0.34em;
  font-weight: 400;
  text-transform: uppercase;
}

.nav { display: flex; gap: 32px; }

.nav a {
  font-size: 12px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--text);
  opacity: 0.75;
  transition: opacity 0.3s;
}

.nav a:hover, .nav a.active { opacity: 1; }

/* ---------- Home hero slideshow ---------- */
.hero {
  position: relative;
  height: 100vh;
  height: 100svh;
  overflow: hidden;
  background: #000;
}

.hero-slide {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 0;
  transition: opacity 2.4s ease;
}

.hero-slide.visible { opacity: 1; }

.hero-title {
  position: absolute;
  left: 40px;
  bottom: 48px;
  z-index: 5;
}

.hero-title h1 {
  font-size: clamp(22px, 3.4vw, 40px);
  font-weight: 300;
  letter-spacing: 0.4em;
  text-transform: uppercase;
  text-shadow: 0 1px 24px rgba(0,0,0,0.55);
}

.hero-title p {
  margin-top: 10px;
  font-family: var(--serif);
  font-size: 13.5px;
  letter-spacing: 0.28em;
  color: rgba(238,238,235,0.82);
  text-shadow: 0 1px 18px rgba(0,0,0,0.6);
}

.hero-scrollhint {
  position: absolute;
  right: 40px;
  bottom: 48px;
  z-index: 5;
  font-size: 10.5px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: rgba(238,238,235,0.6);
  writing-mode: vertical-rl;
}

/* ---------- Section base ---------- */
.section {
  max-width: 1240px;
  margin: 0 auto;
  padding: 120px 40px;
}

.section-label {
  font-size: 11px;
  letter-spacing: 0.34em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 14px;
}

.section-title {
  font-family: var(--serif);
  font-size: clamp(24px, 3vw, 34px);
  font-weight: 400;
  letter-spacing: 0.12em;
  margin-bottom: 46px;
}

/* ---------- Portfolio category tiles ---------- */
.cat-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.cat-card {
  position: relative;
  aspect-ratio: 4 / 5;
  overflow: hidden;
  background: var(--bg-soft);
}

.cat-card img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 1.2s ease, opacity 0.6s;
  opacity: 0.88;
}

.cat-card:hover img { transform: scale(1.04); opacity: 1; }

.cat-card .cat-name {
  position: absolute;
  left: 22px; bottom: 20px;
  z-index: 2;
}

.cat-card .cat-name span {
  display: block;
  font-size: 11px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: rgba(238,238,235,0.75);
  margin-bottom: 6px;
}

.cat-card .cat-name strong {
  font-family: var(--serif);
  font-size: 20px;
  font-weight: 400;
  letter-spacing: 0.14em;
  text-shadow: 0 1px 16px rgba(0,0,0,0.6);
}

.cat-card.soon { pointer-events: none; }
.cat-card.soon img { opacity: 0.35; filter: grayscale(30%); }
.cat-card.soon .cat-soon {
  position: absolute; inset: 0;
  display: flex; align-items: center; justify-content: center;
  font-size: 11px; letter-spacing: 0.32em; text-transform: uppercase;
  color: rgba(238,238,235,0.55);
}

/* ---------- Gallery ---------- */
.gallery-intro {
  max-width: 640px;
  margin-bottom: 64px;
}

.gallery-intro p {
  font-family: var(--serif);
  font-size: 14.5px;
  line-height: 2.2;
  color: var(--text-dim);
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.grid a {
  display: block;
  overflow: hidden;
  background: var(--bg-soft);
  aspect-ratio: 3 / 2;
}

.grid a.portrait { grid-row: span 2; aspect-ratio: auto; }

.grid img {
  width: 100%; height: 100%;
  object-fit: cover;
  opacity: 0.92;
  transition: opacity 0.5s, transform 1.2s ease;
}

.grid a:hover img { opacity: 1; transform: scale(1.025); }

/* ---------- Lightbox ---------- */
.lightbox {
  position: fixed; inset: 0;
  z-index: 200;
  background: rgba(4,4,4,0.96);
  display: none;
  align-items: center;
  justify-content: center;
}

.lightbox.open { display: flex; }

.lightbox img {
  max-width: 92vw;
  max-height: 88vh;
  object-fit: contain;
  box-shadow: 0 0 80px rgba(0,0,0,0.8);
}

.lb-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: none; border: none;
  color: rgba(238,238,235,0.65);
  font-size: 34px;
  font-weight: 200;
  cursor: pointer;
  padding: 24px;
  transition: color 0.3s;
}

.lb-btn:hover { color: #fff; }
.lb-prev { left: 8px; }
.lb-next { right: 8px; }

.lb-close {
  position: absolute;
  top: 20px; right: 28px;
  background: none; border: none;
  color: rgba(238,238,235,0.65);
  font-size: 26px;
  cursor: pointer;
  transition: color 0.3s;
}

.lb-close:hover { color: #fff; }

/* ---------- Profile ---------- */
.profile-wrap {
  display: grid;
  grid-template-columns: 5fr 7fr;
  gap: 72px;
  align-items: start;
}

.profile-photo img { width: 100%; opacity: 0.94; }

.profile-name {
  font-family: var(--serif);
  font-size: 26px;
  font-weight: 400;
  letter-spacing: 0.16em;
  margin-bottom: 6px;
}

.profile-name-en {
  font-size: 11.5px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 36px;
}

.profile-body p {
  font-family: var(--serif);
  font-size: 14.5px;
  line-height: 2.3;
  margin-bottom: 1.8em;
  color: #d6d6d2;
}

.statement-block {
  margin-top: 72px;
  padding-top: 56px;
  border-top: 1px solid var(--line);
}

.statement-block h3 {
  font-family: var(--serif);
  font-size: 19px;
  font-weight: 400;
  letter-spacing: 0.2em;
  margin-bottom: 34px;
}

/* ---------- Footer ---------- */
.site-footer {
  border-top: 1px solid var(--line);
  padding: 44px 40px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--text-dim);
}

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .site-header { padding: 20px 20px; }
  .nav { gap: 18px; }
  .section { padding: 80px 20px; }
  .cat-grid { grid-template-columns: 1fr; }
  .cat-card { aspect-ratio: 3 / 2; }
  .grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  .profile-wrap { grid-template-columns: 1fr; gap: 40px; }
  .hero-title { left: 20px; bottom: 36px; }
  .hero-scrollhint { display: none; }
}