/* ===== Google Fonts ===== */
@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+JP:wght@400;500;700;800;900&display=swap');

/* ===== CSS変数（watanare参考） ===== */
:root {
  --color-pink:    #e65097;
  --color-purple:  #785978;
  --color-blue:    #45b9c8;
  --color-renako:  #ffb6c6;
  --color-gray:    #f6f6f6;
  --color-white:   #ffffff;
  --color-text:    #2d1a2d;
  --color-text-mid:#7a5a78;
  --color-text-sub:#b09ab0;

  --font-main: 'Noto Sans JP', 'Hiragino Kaku Gothic ProN', sans-serif;
  --font-body: 'Noto Sans JP', 'Hiragino Kaku Gothic ProN', sans-serif;

  /* 虹グラデーション */
  --grad-rainbow: linear-gradient(90deg, #ff75c3 0%, #ff7070 20%, #ffa647 40%, #ffd600 60%, #77ff17 80%, #70e2ff 100%);
  --grad-pink:    linear-gradient(135deg, #ff85c2 0%, #e65097 50%, #ff6eb4 100%);

  --radius:    12px;
  --radius-lg: 20px;
}

/* ===== リセット ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

/* ===== ボディ・背景 ===== */
body {
  font-family: var(--font-body);
  background-color: var(--color-white);
  color: var(--color-text);
  line-height: 1.8;
  overflow-x: hidden;
}

/* ドットパターン背景（watanare準拠：70px繰り返し） */
body {
  background-image: radial-gradient(circle, rgba(120,89,120,0.12) 1.5px, transparent 1.5px);
  background-size: 28px 28px;
  background-attachment: fixed;
}

/* ===== ヘッダー ===== */
#header {
  position: sticky;
  top: 0;
  z-index: 200;
  background: rgba(255,255,255,0.94);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 3px solid var(--color-renako);
}

.header-inner {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 32px;
  height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo-wrap { display: flex; align-items: center; gap: 10px; }

.logo-icon {
  width: 38px; height: 38px;
  background: var(--grad-pink);
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  color: white;
  font-family: var(--font-main);
  font-weight: 900;
  font-size: 1rem;
  flex-shrink: 0;
}

.logo-title {
  font-family: var(--font-main);
  font-size: 1.3rem;
  font-weight: 900;
  color: var(--color-text);
  letter-spacing: 0.06em;
}

.header-nav { display: flex; gap: 28px; align-items: center; }

.header-nav a {
  font-family: var(--font-main);
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  color: var(--color-text-mid);
  text-transform: uppercase;
  transition: color 0.2s;
  position: relative;
  padding-bottom: 2px;
}

.header-nav a::after {
  content: '';
  position: absolute;
  left: 0; right: 0; bottom: -2px;
  height: 2px;
  background: var(--grad-rainbow);
  border-radius: 2px;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.25s;
}

.header-nav a:hover { color: var(--color-pink); }
.header-nav a:hover::after { transform: scaleX(1); }

.header-nav-r18 { margin-left: 12px; }

/* ===== キービジュアル ===== */
#kv {
  position: relative;
  background: var(--color-gray);
  min-height: 88vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

/* KV専用：背景を白に上書き */
#kv::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(160deg, #fff0f6 0%, #faf5ff 40%, #fff8f0 100%);
}

/* 虹ライン（上部アクセント） */
#kv::after {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 5px;
  background: var(--grad-rainbow);
}

.kv-inner {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 80px 32px;
  max-width: 720px;
  width: 100%;
}

/* キャラクター画像エリア */
.kv-img-wrap {
  width: 240px;
  height: 320px;
  margin: 0 auto 28px;
  border-radius: var(--radius-lg);
  background: linear-gradient(160deg, #fce4ec, #f3e5f5);
  border: 2px dashed var(--color-renako);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  color: var(--color-text-sub);
  font-size: 0.8rem;
  overflow: hidden;
}

.kv-img-icon { font-size: 3.5rem; }

/* タイトルロゴ */
.kv-logo {
  display: inline-block;
  margin-bottom: 8px;
}

.kv-title {
  font-family: var(--font-main);
  font-size: clamp(3rem, 9vw, 6rem);
  font-weight: 900;
  line-height: 1.05;
  letter-spacing: 0.06em;
  color: var(--color-pink);
  /* 虹グラデーション文字 */
  background: var(--grad-pink);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 10px;
}

.kv-catch {
  font-family: var(--font-main);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  color: var(--color-text-sub);
  margin-bottom: 6px;
  text-transform: uppercase;
}

.kv-sub {
  font-size: 0.88rem;
  color: var(--color-text-sub);
  margin-bottom: 32px;
  letter-spacing: 0.1em;
}

/* 虹アンダーライン */
.kv-rainbow-line {
  width: 120px;
  height: 4px;
  background: var(--grad-rainbow);
  border-radius: 4px;
  margin: 0 auto 28px;
}

.kv-actions {
  display: flex;
  justify-content: center;
  gap: 10px;
  flex-wrap: wrap;
}

.btn-sns {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 10px 22px;
  border-radius: 40px;
  font-family: var(--font-main);
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  transition: transform 0.2s, opacity 0.2s;
}

.btn-sns:hover { transform: translateY(-2px); opacity: 0.88; }
.btn-sns.x  { background: #000; color: #fff; }
.btn-sns.yt { background: #ff0000; color: #fff; }

/* ===== セクション共通 ===== */
.section-white   { background: var(--color-white); }
.section-gray    { background: var(--color-gray); }
.section-pink    { background: #fff5f9; }

.section-inner {
  max-width: 1080px;
  margin: 0 auto;
  padding: 72px 32px;
}

/* セクション見出し（watanare風） */
.sec-head { text-align: center; margin-bottom: 48px; }

.sec-title-wrap {
  display: inline-block;
  position: relative;
  padding: 0 24px;
  margin-bottom: 8px;
}

/* 見出しの左右に虹ライン */
.sec-title-wrap::before,
.sec-title-wrap::after {
  content: '';
  position: absolute;
  top: 50%;
  width: 40px;
  height: 3px;
  background: var(--grad-rainbow);
  border-radius: 3px;
  transform: translateY(-50%);
}

.sec-title-wrap::before { right: 100%; }
.sec-title-wrap::after  { left: 100%; }

.sec-en {
  font-family: var(--font-main);
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 900;
  letter-spacing: 0.05em;
  color: var(--color-pink);
  line-height: 1;
  display: block;
}

.sec-ja {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-text-sub);
  letter-spacing: 0.18em;
  margin-top: 6px;
  display: block;
}

/* ===== SNS ===== */
.sns-card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 4px 24px rgba(120,89,120,0.1);
}

.sns-card--wide {
  max-width: 720px;
  margin: 0 auto;
}

.x-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  max-width: 960px;
  margin: 0 auto;
}

@media (max-width: 640px) {
  .x-grid { grid-template-columns: 1fr; }
}

.sns-card-head {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 18px;
  font-family: var(--font-main);
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0.1em;
  color: #fff;
}

.sns-card-head.x  { background: #000; }
.sns-card-head.yt { background: #ff0000; }

.sns-card-body { padding: 16px; min-height: 240px; }

.sns-card-foot {
  padding: 12px 18px;
  border-top: 1px solid rgba(120,89,120,0.08);
  text-align: right;
}

.sns-more-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 0.82rem;
  font-weight: 700;
  color: #000;
  text-decoration: none;
  letter-spacing: 0.04em;
  transition: opacity 0.15s;
}
.sns-more-link:hover { opacity: 0.6; }

/* ===== GALLERY ===== */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  max-width: 960px;
  margin: 0 auto;
}

.gallery-item {
  aspect-ratio: 3/4;
  border-radius: var(--radius-lg);
  background: linear-gradient(160deg, #fce4ec, #f3e5f5);
  border: 2px dashed var(--color-renako);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 0.75rem;
  color: var(--color-text-sub);
  cursor: pointer;
  position: relative;
  overflow: hidden;
  transition: transform 0.25s, box-shadow 0.25s;
}

.gallery-item:nth-child(even) {
  background: linear-gradient(160deg, #f3e5f5, #e8f5ff);
}

.gallery-icon { font-size: 2.4rem; }

.gallery-item::after {
  content: '拡大';
  position: absolute;
  inset: 0;
  background: rgba(230,80,151,0.78);
  color: #fff;
  font-family: var(--font-main);
  font-size: 0.88rem;
  font-weight: 900;
  letter-spacing: 0.1em;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 0.25s;
}

.gallery-item:hover {
  transform: translateY(-5px);
  box-shadow: 0 12px 32px rgba(230,80,151,0.2);
}

.gallery-item:hover::after { opacity: 1; }

/* ===== ABOUT ===== */
.about-card {
  max-width: 720px;
  margin: 0 auto;
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: 40px 48px;
  display: flex;
  align-items: center;
  gap: 36px;
  box-shadow: 0 4px 24px rgba(120,89,120,0.1);
  position: relative;
  overflow: hidden;
}

/* カード上部に虹ライン */
.about-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 4px;
  background: var(--grad-rainbow);
}

.about-avatar {
  width: 100px; height: 100px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-pink), var(--color-purple));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.8rem;
  flex-shrink: 0;
  box-shadow: 0 4px 16px rgba(230,80,151,0.3);
}

.about-name {
  font-family: var(--font-main);
  font-size: 1.2rem;
  font-weight: 900;
  color: var(--color-pink);
  letter-spacing: 0.08em;
  margin-bottom: 10px;
}

.about-desc { font-size: 0.9rem; color: var(--color-text-mid); line-height: 1.95; }

/* ===== R18バナー ===== */
#r18-section {
  background: #1a0a24;
  position: relative;
  overflow: hidden;
}

.r18-bg {
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(230,80,151,0.08) 1.5px, transparent 1.5px);
  background-size: 22px 22px;
}

.r18-glow {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 25% 50%, rgba(230,80,151,0.15), transparent 50%),
    radial-gradient(circle at 75% 50%, rgba(120,89,120,0.15), transparent 50%);
}

/* 虹ライン上部 */
#r18-section::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 4px;
  background: var(--grad-rainbow);
}

.r18-inner {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 80px 32px;
}

.r18-badge {
  display: inline-block;
  border: 1.5px solid rgba(230,80,151,0.6);
  color: var(--color-pink);
  font-family: var(--font-main);
  font-size: 0.68rem;
  font-weight: 900;
  letter-spacing: 0.2em;
  padding: 5px 18px;
  border-radius: 4px;
  margin-bottom: 20px;
}

.r18-title {
  font-family: var(--font-main);
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 900;
  color: #fff;
  letter-spacing: 0.06em;
  margin-bottom: 10px;
}

.r18-sub {
  font-size: 0.84rem;
  color: rgba(255,255,255,0.4);
  margin-bottom: 32px;
  letter-spacing: 0.04em;
}

.r18-cta {
  display: inline-block;
  background: var(--grad-pink);
  color: #fff;
  font-family: var(--font-main);
  font-weight: 900;
  font-size: 0.9rem;
  letter-spacing: 0.1em;
  padding: 14px 52px;
  border-radius: 40px;
  transition: opacity 0.2s, transform 0.2s;
  box-shadow: 0 6px 24px rgba(230,80,151,0.4);
}

.r18-cta:hover { opacity: 0.88; transform: translateY(-2px); }

/* ===== フッター ===== */
#footer {
  background: #120818;
  padding: 36px 32px;
  text-align: center;
  position: relative;
}

#footer::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--grad-rainbow);
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 28px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.footer-links a {
  font-family: var(--font-main);
  font-size: 0.76rem;
  color: rgba(255,255,255,0.3);
  letter-spacing: 0.06em;
  transition: color 0.2s;
}

.footer-links a:hover { color: var(--color-pink); }
.footer-copy { font-size: 0.72rem; color: rgba(255,255,255,0.2); letter-spacing: 0.08em; }

/* ===== レスポンシブ ===== */
@media (max-width: 768px) {
  .header-inner { padding: 0 20px; }
  .header-nav { gap: 18px; }
  .header-nav a { font-size: 0.72rem; }
  .section-inner { padding: 56px 20px; }
  .gallery-grid { grid-template-columns: repeat(2, 1fr); }
  .sns-grid { grid-template-columns: 1fr; }
  .about-card { flex-direction: column; text-align: center; padding: 32px 24px; }
  .sec-title-wrap::before,
  .sec-title-wrap::after { width: 24px; }
}

@media (max-width: 480px) {
  .logo-title { font-size: 1.1rem; }
  .header-nav { display: none; }
  .kv-img-wrap { width: 190px; height: 256px; }
}