/* ==================================================
   CLAIRE Portfolio — Style Sheet
   配色やフォントを変えたいときは、下の「変数」を
   書き換えるだけで全体に反映されます。
   ================================================== */

:root {
  /* ▼ ここを書き換えてOK：サイト全体の色 */
  --color-bg: #0a0a12;          /* 背景（深い夜色） */
  --color-bg-soft: #101020;     /* 少し明るい背景 */
  --color-text: #f5f2ec;        /* 文字（生成り白） */
  --color-text-dim: #9a96a8;    /* 控えめな文字 */
  --color-lavender: #b8a1e3;    /* アクセント1：ラベンダー */
  --color-rose: #e8b4a0;        /* アクセント2：ローズゴールド */
  --color-teal: #7fd4c1;        /* アクセント3：オーロラの緑 */

  /* フォント */
  --font-serif-jp: 'Shippori Mincho', 'Hiragino Mincho ProN', serif;
  --font-serif-en: 'Cormorant Garamond', Georgia, serif;
  --font-sans: 'Inter', 'Hiragino Kaku Gothic ProN', sans-serif;
}

/* ---------- リセット ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: auto; }

body {
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-serif-jp);
  font-weight: 400;
  line-height: 1.9;
  letter-spacing: 0.04em;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
ul { list-style: none; }
em { font-style: normal; }

::selection { background: rgba(184, 161, 227, 0.35); }

/* ==================================================
   プリローダー（幕開け演出）
   ================================================== */
.preloader {
  position: fixed;
  inset: 0;
  z-index: 100;
  background: var(--color-bg);
  display: flex;
  align-items: center;
  justify-content: center;
}

.preloader__inner { text-align: center; }

.preloader__logo {
  font-family: var(--font-serif-en);
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  letter-spacing: 0.55em;
  text-indent: 0.55em; /* 字間の分だけ中央補正 */
  color: var(--color-text);
  opacity: 0;
}

.preloader__line {
  width: min(280px, 60vw);
  height: 1px;
  margin: 1.6rem auto 0;
  background: rgba(245, 242, 236, 0.12);
  overflow: hidden;
}

.preloader__line-fill {
  display: block;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, var(--color-lavender), var(--color-rose));
  transform: scaleX(0);
  transform-origin: left center;
}

/* ==================================================
   ヘッダー
   ================================================== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.8rem clamp(1.4rem, 4vw, 3.5rem);
  opacity: 0; /* JSでふわっと表示 */
  mix-blend-mode: difference; /* 背景が明るくても読める */
}

.header__logo {
  font-family: var(--font-serif-en);
  font-size: 1.05rem;
  letter-spacing: 0.4em;
}

.header__nav {
  display: flex;
  gap: clamp(1.2rem, 3vw, 2.4rem);
}

.header__nav a {
  font-family: var(--font-sans);
  font-size: 0.72rem;
  font-weight: 400;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  opacity: 0.75;
  transition: opacity 0.4s ease;
}

.header__nav a:hover { opacity: 1; }

/* ==================================================
   ① Hero（ファーストビュー）
   ================================================== */
.hero {
  position: relative;
  height: 100svh;
  min-height: 560px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
  will-change: transform;
}

#auroraCanvas {
  width: 100%;
  height: 100%;
  display: block;
}

/* フィルムグレイン（映画のような質感のノイズ） */
.grain {
  position: absolute;
  inset: 0;
  z-index: 3;
  pointer-events: none;
  opacity: 0.5;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='240' height='240'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.32'/%3E%3C/svg%3E");
}

.hero__content {
  position: relative;
  z-index: 4;
  text-align: center;
  padding: 0 1.5rem;
}

.hero__eyebrow {
  font-family: var(--font-sans);
  font-size: 0.68rem;
  font-weight: 300;
  letter-spacing: 0.5em;
  color: var(--color-text-dim);
  margin-bottom: clamp(1.6rem, 3.5vh, 2.8rem);
}

.hero__title {
  font-size: clamp(2rem, 5.6vw, 4.4rem);
  font-weight: 500;
  line-height: 1.55;
  letter-spacing: 0.08em;
}

.hero__title em {
  font-family: var(--font-serif-en);
  font-style: italic;
  font-weight: 400;
  background: linear-gradient(100deg, var(--color-lavender), var(--color-rose) 60%, var(--color-teal));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  padding-right: 0.06em; /* イタリックの見切れ防止 */
}

.hero__sub {
  margin-top: clamp(1.8rem, 4vh, 3rem);
  font-size: clamp(0.82rem, 1.4vw, 1rem);
  font-weight: 400;
  color: var(--color-text-dim);
  letter-spacing: 0.14em;
}

/* 1行ずつ「立ち上がる」テキストの仕組み */
.reveal-line {
  display: block;
  overflow: hidden;
}

.reveal-line > span {
  display: inline-block;
  transform: translateY(110%);
  will-change: transform;
}

/* スクロールを促すインジケーター */
.hero__scroll {
  position: absolute;
  bottom: 2.4rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 4;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.8rem;
  opacity: 0; /* JSでふわっと表示 */
}

.hero__scroll-label {
  font-family: var(--font-sans);
  font-size: 0.62rem;
  font-weight: 300;
  letter-spacing: 0.42em;
  text-transform: uppercase;
  color: var(--color-text-dim);
}

.hero__scroll-line {
  width: 1px;
  height: 56px;
  background: linear-gradient(to bottom, rgba(245,242,236,0.55), transparent);
  overflow: hidden;
  position: relative;
}

.hero__scroll-line::after {
  content: '';
  position: absolute;
  top: -100%;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(to bottom, transparent, var(--color-rose));
  animation: scrollFlow 2.4s cubic-bezier(0.65, 0, 0.35, 1) infinite;
}

@keyframes scrollFlow {
  0%   { top: -100%; }
  60%, 100% { top: 100%; }
}

/* ==================================================
   共通セクション
   ================================================== */
.section {
  position: relative;
  padding: clamp(6rem, 14vh, 10rem) clamp(1.5rem, 5vw, 4rem);
}

.section__inner {
  max-width: 1080px;
  margin: 0 auto;
}

.section__label {
  font-family: var(--font-serif-en);
  font-style: italic;
  font-size: clamp(1rem, 1.6vw, 1.25rem);
  letter-spacing: 0.18em;
  background: linear-gradient(100deg, var(--color-lavender), var(--color-rose));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  margin-bottom: 1.2rem;
}

.section__title {
  font-size: clamp(1.5rem, 3.4vw, 2.5rem);
  font-weight: 500;
  line-height: 1.7;
  letter-spacing: 0.08em;
  margin-bottom: clamp(2.8rem, 7vh, 4.5rem);
}

/* スクロールでふわっと現れる要素（JSが .is-visible を付けます） */
.reveal {
  opacity: 0;
  transform: translateY(36px);
  will-change: opacity, transform;
}

/* ==================================================
   ② About
   ================================================== */
.about {
  background: linear-gradient(to bottom, var(--color-bg), var(--color-bg-soft) 55%, var(--color-bg));
}

.about__grid {
  display: grid;
  grid-template-columns: minmax(220px, 340px) 1fr;
  gap: clamp(2.5rem, 6vw, 5rem);
  align-items: center;
}

.about__visual {
  aspect-ratio: 3 / 4;
  border-radius: 2px;
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(120% 90% at 20% 15%, rgba(184,161,227,0.35), transparent 55%),
    radial-gradient(110% 100% at 85% 80%, rgba(232,180,160,0.3), transparent 55%),
    radial-gradient(80% 80% at 60% 40%, rgba(127,212,193,0.14), transparent 60%),
    var(--color-bg-soft);
  border: 1px solid rgba(245,242,236,0.08);
}

.about__visual-orb {
  position: absolute;
  inset: 18%;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 30%, rgba(245,242,236,0.22), rgba(184,161,227,0.16) 45%, transparent 70%);
  filter: blur(2px);
  animation: orbBreath 9s ease-in-out infinite;
}

@keyframes orbBreath {
  0%, 100% { transform: scale(1) translateY(0); opacity: 0.85; }
  50%       { transform: scale(1.07) translateY(-8px); opacity: 1; }
}

.about__text p {
  font-size: clamp(0.9rem, 1.5vw, 1.02rem);
  color: rgba(245, 242, 236, 0.85);
}

.about__text p + p { margin-top: 1.6em; }

/* ==================================================
   ③ Works
   ================================================== */
.works__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: clamp(1.6rem, 4vw, 3rem);
}

.work-card {
  display: block;
}

.work-card__thumb {
  position: relative;
  aspect-ratio: 16 / 10;
  border-radius: 2px;
  overflow: hidden;
  border: 1px solid rgba(245,242,236,0.08);
  transition: transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
}

/* カードのサムネイル（画像に差し替えるまでの美しいプレースホルダ） */
.work-card__thumb--01 { background: radial-gradient(130% 110% at 15% 20%, rgba(184,161,227,0.5), transparent 60%), radial-gradient(120% 120% at 90% 90%, rgba(232,180,160,0.28), transparent 55%), var(--color-bg-soft); }
.work-card__thumb--02 { background: radial-gradient(130% 110% at 80% 15%, rgba(232,180,160,0.45), transparent 60%), radial-gradient(120% 120% at 10% 85%, rgba(127,212,193,0.22), transparent 55%), var(--color-bg-soft); }
.work-card__thumb--03 { background: radial-gradient(130% 110% at 20% 80%, rgba(127,212,193,0.35), transparent 60%), radial-gradient(120% 120% at 85% 15%, rgba(184,161,227,0.32), transparent 55%), var(--color-bg-soft); }
.work-card__thumb--04 { background: radial-gradient(130% 110% at 85% 75%, rgba(184,161,227,0.42), transparent 60%), radial-gradient(120% 120% at 15% 20%, rgba(232,180,160,0.3), transparent 55%), var(--color-bg-soft); }

.work-card__num {
  position: absolute;
  right: 1.2rem;
  bottom: 0.6rem;
  font-family: var(--font-serif-en);
  font-style: italic;
  font-size: clamp(2.6rem, 5vw, 4rem);
  color: rgba(245,242,236,0.16);
  line-height: 1;
}

.work-card:hover .work-card__thumb { transform: scale(1.025); }

.work-card__body {
  padding: 1.1rem 0.2rem 0;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
}

.work-card__title {
  font-size: clamp(0.95rem, 1.6vw, 1.1rem);
  font-weight: 500;
  letter-spacing: 0.06em;
}

.work-card__meta {
  font-family: var(--font-sans);
  font-size: 0.68rem;
  font-weight: 300;
  letter-spacing: 0.18em;
  color: var(--color-text-dim);
  white-space: nowrap;
}

/* ==================================================
   ④ Skills
   ================================================== */
.skills {
  background: linear-gradient(to bottom, var(--color-bg), var(--color-bg-soft) 55%, var(--color-bg));
}

.skills__list {
  border-top: 1px solid rgba(245,242,236,0.1);
}

.skills__item {
  display: grid;
  grid-template-columns: 5rem 1fr;
  gap: 1.5rem;
  align-items: baseline;
  padding: clamp(1.8rem, 4vh, 2.6rem) 0.4rem;
  border-bottom: 1px solid rgba(245,242,236,0.1);
}

.skills__num {
  font-family: var(--font-serif-en);
  font-style: italic;
  font-size: 1.2rem;
  color: var(--color-text-dim);
}

.skills__item h3 {
  font-size: clamp(1.05rem, 2vw, 1.3rem);
  font-weight: 500;
  letter-spacing: 0.08em;
  margin-bottom: 0.5rem;
}

.skills__item p {
  font-size: clamp(0.85rem, 1.4vw, 0.95rem);
  color: var(--color-text-dim);
}

/* ==================================================
   ⑤ Contact
   ================================================== */
.contact { padding-bottom: clamp(7rem, 16vh, 12rem); }

.contact__inner { text-align: center; }

.contact__title {
  font-family: var(--font-serif-en);
  font-size: clamp(2.2rem, 6vw, 4.2rem);
  font-weight: 400;
  line-height: 1.25;
  letter-spacing: 0.04em;
  margin-bottom: 1.8rem;
}

.contact__title em {
  font-style: italic;
  background: linear-gradient(100deg, var(--color-lavender), var(--color-rose) 55%, var(--color-teal));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  padding-right: 0.08em;
}

.contact__lead {
  font-size: clamp(0.85rem, 1.4vw, 0.98rem);
  color: var(--color-text-dim);
  margin-bottom: 3rem;
}

.contact__btn {
  display: inline-block;
  position: relative;
  padding: 1.05rem 3.4rem;
  font-size: 0.92rem;
  letter-spacing: 0.22em;
  border: 1px solid rgba(245,242,236,0.3);
  border-radius: 999px;
  overflow: hidden;
  transition: color 0.5s ease, border-color 0.5s ease;
}

.contact__btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(100deg, var(--color-lavender), var(--color-rose));
  opacity: 0;
  transition: opacity 0.5s ease;
}

.contact__btn span { position: relative; z-index: 1; }

.contact__btn:hover { color: #14101c; border-color: transparent; }
.contact__btn:hover::before { opacity: 1; }

.contact__sns {
  margin-top: 2.8rem;
  display: flex;
  justify-content: center;
  gap: 2.2rem;
}

.contact__sns a {
  font-family: var(--font-sans);
  font-size: 0.72rem;
  font-weight: 300;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-text-dim);
  transition: color 0.4s ease;
}

.contact__sns a:hover { color: var(--color-text); }

/* ==================================================
   ⑥ Footer
   ================================================== */
.footer {
  padding: 2.4rem 1.5rem;
  text-align: center;
  border-top: 1px solid rgba(245,242,236,0.07);
}

.footer p {
  font-family: var(--font-sans);
  font-size: 0.66rem;
  font-weight: 300;
  letter-spacing: 0.2em;
  color: var(--color-text-dim);
}

/* ==================================================
   レスポンシブ（スマホ対応）
   ================================================== */
@media (max-width: 720px) {
  .header__nav { display: none; } /* スマホではナビを省略（1ページなのでスクロールで届く） */

  .hero__eyebrow { font-size: 0.58rem; letter-spacing: 0.3em; }
  .hero__sub { font-size: 0.78rem; letter-spacing: 0.06em; }

  .about__grid {
    grid-template-columns: 1fr;
    gap: 2.4rem;
  }

  .about__visual { max-width: 300px; margin: 0 auto; }

  .works__grid { grid-template-columns: 1fr; }

  .skills__item { grid-template-columns: 3rem 1fr; gap: 1rem; }
}

/* ==================================================
   動きが苦手な方への配慮（OSの設定を尊重）
   ================================================== */
@media (prefers-reduced-motion: reduce) {
  .preloader { display: none; }
  .header { opacity: 1; }
  .hero__scroll { opacity: 1; }
  .reveal { opacity: 1; transform: none; }
  .reveal-line > span { transform: none; }
  .hero__scroll-line::after,
  .about__visual-orb { animation: none; }
}