/* =========================================================
   Portfolio — soft editorial style
   ========================================================= */

:root {
  --bg: #f6f1e9;
  --ink: #1a1613;
  --ink-soft: rgba(26, 22, 19, 0.62);
  --line: rgba(26, 22, 19, 0.28);
  --line-strong: rgba(26, 22, 19, 0.75);
  --pink: #f4cfe0;
  --lavender: #cdc8ee;
  --peach: #fbdcc2;
  --mint: #cfe8dc;
  --blue: #cbdcf2;
  --serif: "Italiana", "Didot", "Bodoni MT", Georgia, serif;
  --serif-it: "Cormorant Garamond", Georgia, serif;
  --sans: "Zen Kaku Gothic New", "Avenir Next", "Helvetica Neue", sans-serif;
  --container: min(1120px, 92vw);
}

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

html {
  scroll-behavior: smooth;
}

body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-weight: 300;
  font-size: 15px;
  line-height: 1.9;
  letter-spacing: 0.04em;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

img {
  display: block;
}

/* ---------- 背景のグラデーション ---------- */

.bg-blobs {
  position: fixed;
  inset: 0;
  z-index: -1;
  overflow: hidden;
  pointer-events: none;
}

/* filter: blur は重いので、縁が透明なラジアルグラデーションで代用 */
.blob {
  position: absolute;
  border-radius: 50%;
  opacity: 0.62;
}

.blob-1 { width: 72vw; height: 72vw; top: -26vw;  left: -22vw;
  background: radial-gradient(circle, var(--pink) 0%, color-mix(in srgb, var(--pink) 55%, transparent) 42%, transparent 70%); }
.blob-2 { width: 64vw; height: 64vw; top: -8vw; right: -24vw;
  background: radial-gradient(circle, var(--lavender) 0%, color-mix(in srgb, var(--lavender) 55%, transparent) 42%, transparent 70%); }
.blob-3 { width: 58vw; height: 58vw; top: 52vh; left: 20vw; opacity: 0.45;
  background: radial-gradient(circle, var(--peach) 0%, color-mix(in srgb, var(--peach) 55%, transparent) 42%, transparent 70%); }
.blob-4 { width: 66vw; height: 66vw; bottom: -28vw; right: -20vw; opacity: 0.5;
  background: radial-gradient(circle, var(--blue) 0%, color-mix(in srgb, var(--blue) 55%, transparent) 42%, transparent 70%); }
.blob-5 { width: 50vw; height: 50vw; bottom: 2vh; left: -22vw; opacity: 0.48;
  background: radial-gradient(circle, var(--mint) 0%, color-mix(in srgb, var(--mint) 55%, transparent) 42%, transparent 70%); }

/* ---------- ヘッダー ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  border-bottom: 1px solid var(--line);
  background: color-mix(in srgb, var(--bg) 92%, transparent);
}

.header-inner {
  width: var(--container);
  margin-inline: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: 18px;
}

.brand {
  font-family: var(--serif);
  font-size: 22px;
  letter-spacing: 0.14em;
  display: flex;
  align-items: center;
  gap: 14px;
}

.brand .divider,
.site-nav .divider {
  display: inline-block;
  width: 1px;
  height: 16px;
  background: var(--line-strong);
  transform: rotate(18deg);
}

.brand .sub {
  font-family: var(--sans);
  font-size: 10px;
  letter-spacing: 0.42em;
  color: var(--ink-soft);
  text-transform: uppercase;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 26px;
  font-size: 11px;
  letter-spacing: 0.34em;
  text-transform: uppercase;
}

.site-nav a {
  position: relative;
  padding-bottom: 3px;
}

.site-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 1px;
  background: var(--ink);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.45s cubic-bezier(0.16, 1, 0.3, 1);
}

.site-nav a:hover::after,
.site-nav a.is-current::after {
  transform: scaleX(1);
}

/* ---------- セクション見出し ---------- */

.section-head {
  width: var(--container);
  margin-inline: auto;
  padding-block: 14px;
  border-top: 1px solid var(--line-strong);
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  font-size: 10px;
  letter-spacing: 0.4em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

.section-head .title-jp {
  letter-spacing: 0.3em;
}

/* ---------- 作品リスト(メゾンリー) ---------- */

.works-note {
  width: var(--container);
  margin-inline: auto;
  padding-block: clamp(28px, 4vw, 48px) 0;
  text-align: center;
  font-size: 12px;
  color: var(--ink-soft);
}

/* サイトの横幅は揃えたまま、カラム内に縦横比そのままの画像を敷き詰める。
   作品は左→右の順で各カラムに振り分けられる(JSで分配) */
.works {
  width: var(--container);
  margin-inline: auto;
  padding-block: clamp(28px, 4vw, 48px) clamp(80px, 10vw, 140px);
  display: flex;
  align-items: flex-start;
  gap: clamp(18px, 2.6vw, 34px);
}

.works-col {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: clamp(18px, 2.6vw, 34px);
}

.work-media {
  position: relative;
  display: block;
  cursor: pointer;
  overflow: hidden;
}

/* 画像は縦横比そのまま(カラム幅にフィット、高さは画像なり) */
.work-media img {
  width: 100%;
  height: auto;
  box-shadow: 0 18px 44px -24px rgba(26, 22, 19, 0.35);
  transition: transform 0.9s cubic-bezier(0.16, 1, 0.3, 1);
}

.work-media:hover img {
  transform: scale(1.025);
}

/* 複数枚の作品に付く枚数バッジ */
.work-count {
  position: absolute;
  top: 12px;
  right: 12px;
  padding: 4px 12px;
  background: color-mix(in srgb, var(--bg) 86%, transparent);
  font-size: 9px;
  letter-spacing: 0.24em;
  color: var(--ink);
  pointer-events: none;
}

/* ホバーで作品名がふわっと出る */
.work-overlay {
  position: absolute;
  inset: auto 0 0 0;
  padding: 34px 16px 12px;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  background: linear-gradient(
    to top,
    color-mix(in srgb, var(--bg) 92%, transparent),
    transparent
  );
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.5s ease, transform 0.5s cubic-bezier(0.16, 1, 0.3, 1);
  pointer-events: none;
}

.work-media:hover .work-overlay {
  opacity: 1;
  transform: none;
}

.work-overlay h2 {
  font-family: var(--serif);
  font-weight: 400;
  font-size: 19px;
  letter-spacing: 0.05em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.work-overlay .cat {
  font-size: 9px;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--ink-soft);
  white-space: nowrap;
}

/* ---------- ふわっと表示(スクロールリビール) ---------- */

.reveal {
  opacity: 0;
  transform: translateY(34px);
  filter: blur(8px);
  transition:
    opacity 1.2s ease,
    transform 1.2s cubic-bezier(0.16, 1, 0.3, 1),
    filter 1.2s ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: none;
  filter: none;
}

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; filter: none; transition: none; }
  .badge-rotate svg, .hero-sparkle { animation: none; }
}

/* ---------- ライトボックス ---------- */

.lightbox {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: grid;
  place-items: center;
  padding: 4vmin;
  background: color-mix(in srgb, var(--bg) 90%, transparent);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.45s ease;
}

.lightbox.is-open {
  opacity: 1;
  pointer-events: auto;
}

.lightbox img {
  max-width: 92vw;
  max-height: 88vh;
  width: auto;
  height: auto;
  box-shadow: 0 40px 90px -40px rgba(26, 22, 19, 0.5);
  transform: scale(0.96);
  transition: transform 0.45s cubic-bezier(0.16, 1, 0.3, 1);
}

.lightbox.is-open img {
  transform: scale(1);
}

.lightbox .lb-close {
  position: absolute;
  top: 26px;
  right: 34px;
  font-family: var(--sans);
  font-size: 10px;
  letter-spacing: 0.4em;
  text-transform: uppercase;
  background: none;
  border: none;
  color: var(--ink);
  cursor: pointer;
  padding: 8px;
}

.lightbox .lb-caption {
  position: absolute;
  bottom: 26px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 10px;
  letter-spacing: 0.36em;
  text-transform: uppercase;
  color: var(--ink-soft);
  white-space: nowrap;
}

/* ---------- 詳細ページ ---------- */

.detail-hero {
  width: var(--container);
  margin-inline: auto;
  padding-block: clamp(48px, 7vw, 96px) clamp(30px, 4vw, 50px);
}

.detail-hero .back {
  font-size: 10px;
  letter-spacing: 0.36em;
  text-transform: uppercase;
  color: var(--ink-soft);
  display: inline-flex;
  align-items: center;
  gap: 12px;
}

.detail-hero .back::before {
  content: "";
  width: 34px;
  height: 1px;
  background: var(--line-strong);
}

.detail-hero h1 {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(44px, 7.5vw, 96px);
  line-height: 1.1;
  margin-top: 22px;
  text-transform: lowercase;
}

.detail-hero .detail-meta {
  margin-top: 14px;
  display: flex;
  gap: 26px;
  align-items: baseline;
  font-size: 10px;
  letter-spacing: 0.36em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

.detail-hero .detail-desc {
  margin-top: 20px;
  max-width: 38em;
  font-size: 12.5px;
  color: var(--ink-soft);
}

/* 画像を余白なしで縦に積み、1枚の縦長ページのように見せる */
.detail-images {
  width: min(880px, 92vw);
  margin-inline: auto;
  padding-block: clamp(30px, 5vw, 60px) clamp(70px, 9vw, 120px);
}

.detail-stack {
  box-shadow: 0 30px 70px -34px rgba(26, 22, 19, 0.38);
}

.detail-stack img {
  display: block;
  width: 100%;
  height: auto;
}

.detail-nav {
  width: var(--container);
  margin-inline: auto;
  padding-block: 26px 90px;
  border-top: 1px solid var(--line-strong);
  display: flex;
  justify-content: space-between;
  font-size: 10px;
  letter-spacing: 0.36em;
  text-transform: uppercase;
}

.detail-nav a {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--ink-soft);
  transition: color 0.3s ease;
}

.detail-nav a:hover { color: var(--ink); }

/* ---------- パスワードゲート ---------- */

.gate {
  min-height: calc(100vh - 180px);
  display: grid;
  place-items: center;
  width: var(--container);
  margin-inline: auto;
  padding-block: 60px;
}

.gate-card {
  width: min(460px, 100%);
  text-align: center;
  border: 1px solid var(--line-strong);
  padding: clamp(40px, 6vw, 64px) clamp(28px, 5vw, 52px);
  position: relative;
  background:
    radial-gradient(120% 90% at 15% 10%, color-mix(in srgb, var(--lavender) 55%, transparent) 0%, transparent 55%),
    radial-gradient(120% 100% at 90% 90%, color-mix(in srgb, var(--pink) 55%, transparent) 0%, transparent 60%),
    color-mix(in srgb, var(--bg) 70%, transparent);
}

.gate-card .gate-sparkle {
  position: absolute;
  top: -14px;
  right: 22px;
  font-size: 26px;
  background: var(--bg);
  padding-inline: 6px;
}

.gate-card h1 {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(34px, 5vw, 44px);
  text-transform: lowercase;
  line-height: 1.15;
}

.gate-card .gate-sub {
  margin-top: 10px;
  font-size: 10px;
  letter-spacing: 0.4em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

.gate-card p.gate-note {
  margin-top: 22px;
  font-size: 12px;
  color: var(--ink-soft);
}

.gate-form {
  margin-top: 30px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.gate-form input {
  border: none;
  border-bottom: 1px solid var(--line-strong);
  background: transparent;
  padding: 12px 4px;
  text-align: center;
  font-family: var(--sans);
  font-size: 15px;
  letter-spacing: 0.3em;
  color: var(--ink);
  outline: none;
  transition: border-color 0.3s ease;
}

.gate-form input:focus {
  border-color: var(--ink);
}

.gate-form button {
  align-self: center;
  margin-top: 8px;
  padding: 13px 44px;
  background: var(--ink);
  color: var(--bg);
  border: none;
  font-family: var(--sans);
  font-size: 10px;
  letter-spacing: 0.42em;
  text-transform: uppercase;
  cursor: pointer;
  transition: opacity 0.3s ease;
}

.gate-form button:hover { opacity: 0.78; }

.gate-error {
  min-height: 1.6em;
  font-size: 11px;
  letter-spacing: 0.2em;
  color: #a4483f;
}

.gate-card.is-shaking {
  animation: shake 0.5s ease;
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  20% { transform: translateX(-9px); }
  40% { transform: translateX(8px); }
  60% { transform: translateX(-6px); }
  80% { transform: translateX(4px); }
}

.private-note {
  width: var(--container);
  margin-inline: auto;
  padding-block: 8px 0;
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  font-size: 10px;
  letter-spacing: 0.34em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

.private-note button {
  background: none;
  border: none;
  font: inherit;
  color: inherit;
  letter-spacing: inherit;
  text-transform: inherit;
  cursor: pointer;
  border-bottom: 1px solid var(--line-strong);
  padding-bottom: 2px;
}

[hidden] { display: none !important; }

/* ---------- フッター ---------- */

.site-footer {
  border-top: 1px solid var(--line-strong);
}

.footer-inner {
  width: var(--container);
  margin-inline: auto;
  padding-block: 34px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 14px;
  font-size: 10px;
  letter-spacing: 0.34em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

.footer-inner .footer-brand {
  font-family: var(--serif);
  font-size: 17px;
  letter-spacing: 0.14em;
  color: var(--ink);
  text-transform: none;
}

.to-top {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.to-top::after {
  content: "↑";
  font-size: 13px;
}