/* =========================================================
   AI美女.com — Phase 1 stylesheet
   高級ギャラリー型 / ダーク基調 / シャンパンゴールド
   ========================================================= */

:root {
  --bg-0: #101015;
  --bg-1: #16161c;
  --bg-2: #1d1d25;
  --line: #2a2a34;
  --gold: #c99a6a;
  --gold-soft: #d9b890;
  --gold-bright: #e3bd8f;
  --text: #ece9e3;
  --text-dim: #9a968d;
  --text-faint: #6a675f;
  --radius: 14px;
  --maxw: 1180px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

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

html { scroll-behavior: smooth; }

body {
  background:
    radial-gradient(1200px 700px at 70% -10%, #1b1b24 0%, transparent 60%),
    linear-gradient(180deg, var(--bg-1) 0%, var(--bg-0) 100%);
  background-attachment: fixed;
  color: var(--text);
  font-family: "Noto Serif JP", "Cormorant Garamond", serif;
  font-weight: 300;
  line-height: 1.8;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }

/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px clamp(20px, 5vw, 48px);
  background: rgba(16, 16, 21, 0.72);
  backdrop-filter: saturate(140%) blur(14px);
  -webkit-backdrop-filter: saturate(140%) blur(14px);
  border-bottom: 1px solid var(--line);
}

.brand {
  display: inline-flex;
  align-items: baseline;
  gap: 10px;
  letter-spacing: 0.04em;
}
.brand-mark {
  font-family: "Cormorant Garamond", serif;
  font-weight: 600;
  font-size: 1.05rem;
  color: var(--gold);
  border: 1px solid var(--gold);
  border-radius: 6px;
  padding: 2px 8px;
  line-height: 1;
}
.brand-name { font-size: 1.35rem; font-weight: 500; letter-spacing: 0.08em; }
.brand-dot { color: var(--gold); font-family: "Cormorant Garamond", serif; font-size: 0.7em; letter-spacing: 0; }

.site-nav { display: flex; gap: clamp(16px, 3vw, 34px); }
.nav-link {
  font-family: "Cormorant Garamond", serif;
  font-size: 0.95rem;
  letter-spacing: 0.22em;
  color: var(--text-dim);
  transition: color 0.3s var(--ease);
}
.nav-link:hover { color: var(--gold-bright); }

/* ===== App / layout ===== */
.app {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: clamp(32px, 6vw, 72px) clamp(20px, 5vw, 48px) 80px;
  animation: viewIn 0.6s var(--ease) both;
}
@keyframes viewIn {
  from { opacity: 0; transform: translateY(14px); }
  to { opacity: 1; transform: none; }
}

/* ===== Hero ===== */
.hero { text-align: center; margin-bottom: clamp(40px, 7vw, 80px); }
.hero-kicker {
  font-family: "Cormorant Garamond", serif;
  letter-spacing: 0.4em;
  font-size: 0.85rem;
  color: var(--gold);
  text-transform: uppercase;
  margin-bottom: 18px;
}
.hero-title {
  font-size: clamp(2.2rem, 6vw, 4.1rem);
  font-weight: 500;
  letter-spacing: 0.06em;
  line-height: 1.25;
  margin-bottom: 22px;
}
.hero-title .gold { color: var(--gold); }
.hero-sub {
  color: var(--text-dim);
  font-size: clamp(0.95rem, 2vw, 1.1rem);
  letter-spacing: 0.05em;
  max-width: 36em;
  margin: 0 auto;
}
.hero-rule {
  width: 64px; height: 1px;
  background: linear-gradient(90deg, transparent, var(--gold), transparent);
  margin: 30px auto 0;
}

/* ===== Section heading ===== */
.section-head {
  display: flex; align-items: baseline; gap: 16px;
  margin-bottom: 30px;
}
.section-head h2 {
  font-family: "Cormorant Garamond", serif;
  font-weight: 500;
  letter-spacing: 0.24em;
  font-size: 1.4rem;
  color: var(--text);
  text-transform: uppercase;
}
.section-head .count { color: var(--text-faint); font-size: 0.9rem; letter-spacing: 0.1em; }

/* ===== Character grid (top) ===== */
.char-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: clamp(18px, 2.6vw, 30px);
}

.char-card {
  position: relative;
  display: block;
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--bg-2);
  border: 1px solid var(--line);
  transition: transform 0.5s var(--ease), border-color 0.5s var(--ease), box-shadow 0.5s var(--ease);
}
.char-card:hover {
  transform: translateY(-6px);
  border-color: rgba(201, 154, 106, 0.55);
  box-shadow: 0 18px 50px -20px rgba(0, 0, 0, 0.8), 0 0 0 1px rgba(201, 154, 106, 0.18);
}

.frame { position: relative; aspect-ratio: 3 / 4; overflow: hidden; background: var(--bg-1); }
.frame.frame-wide { aspect-ratio: 4 / 5; }

/* placeholder shown until a real image loads */
.frame .ph {
  position: absolute; inset: 0;
  display: grid; place-items: center;
  background:
    radial-gradient(120% 80% at 30% 20%, #23232d 0%, transparent 55%),
    linear-gradient(150deg, #1a1a22 0%, #121218 100%);
}
.frame .ph::after {
  content: "AI";
  position: absolute; right: 12px; bottom: 10px;
  font-family: "Cormorant Garamond", serif;
  font-size: 0.7rem; letter-spacing: 0.3em;
  color: var(--text-faint);
}
.frame .ph .glyph {
  font-size: clamp(2.6rem, 6vw, 4rem);
  color: var(--gold);
  opacity: 0.85;
  font-weight: 500;
  text-shadow: 0 4px 30px rgba(201, 154, 106, 0.25);
}
.frame .ph .glyph-sub {
  position: absolute; bottom: 16px; left: 0; right: 0;
  text-align: center;
  font-family: "Cormorant Garamond", serif;
  letter-spacing: 0.3em; font-size: 0.8rem; color: var(--text-faint);
}

.frame img {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  object-fit: cover;
  opacity: 0;
  transition: opacity 0.7s var(--ease), transform 6s var(--ease);
}
.frame img.loaded { opacity: 1; }
.char-card:hover .frame img.loaded { transform: scale(1.05); }
.frame img.missing { opacity: 0; }

.card-body {
  padding: 16px 18px 20px;
  border-top: 1px solid var(--line);
}
.card-name {
  display: flex; align-items: baseline; gap: 10px;
  font-size: 1.25rem; font-weight: 500; letter-spacing: 0.08em;
}
.card-name .kanji { font-size: 0.9rem; color: var(--gold); letter-spacing: 0.12em; }
.card-meta { color: var(--text-faint); font-size: 0.82rem; letter-spacing: 0.06em; margin-top: 4px; }
.card-concept {
  margin-top: 12px;
  font-size: 0.86rem; color: var(--text-dim);
  letter-spacing: 0.03em; line-height: 1.6;
}
.card-cta {
  margin-top: 14px;
  font-family: "Cormorant Garamond", serif;
  letter-spacing: 0.22em; font-size: 0.78rem; color: var(--gold);
  display: inline-flex; align-items: center; gap: 8px;
  transition: gap 0.3s var(--ease);
}
.char-card:hover .card-cta { gap: 14px; }

/* ===== Character detail ===== */
.back-link {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: "Cormorant Garamond", serif;
  letter-spacing: 0.2em; font-size: 0.85rem; color: var(--text-dim);
  margin-bottom: 28px; transition: color 0.3s var(--ease);
}
.back-link:hover { color: var(--gold-bright); }

.detail-hero {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: clamp(24px, 4vw, 56px);
  align-items: center;
  margin-bottom: clamp(40px, 6vw, 72px);
}
.detail-portrait { border-radius: var(--radius); overflow: hidden; border: 1px solid var(--line); }
.detail-info .d-kicker {
  font-family: "Cormorant Garamond", serif;
  letter-spacing: 0.36em; color: var(--gold); font-size: 0.8rem;
  text-transform: uppercase; margin-bottom: 14px;
}
.detail-info h1 {
  font-size: clamp(2.4rem, 7vw, 3.8rem); font-weight: 500; letter-spacing: 0.05em; line-height: 1.1;
}
.detail-info h1 .kanji { display: block; font-size: 1.1rem; color: var(--gold); letter-spacing: 0.2em; margin-top: 10px; }
.detail-info .d-meta { color: var(--text-dim); letter-spacing: 0.06em; margin: 18px 0; font-size: 0.95rem; }
.detail-info .d-concept { color: var(--text); font-size: 1.05rem; line-height: 1.9; max-width: 30em; }
.detail-tags { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 22px; }
.tag {
  border: 1px solid var(--line); border-radius: 999px;
  padding: 5px 14px; font-size: 0.78rem; letter-spacing: 0.1em; color: var(--text-dim);
}

/* gallery grid */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: clamp(12px, 2vw, 22px);
}
.gallery-item {
  border-radius: 12px; overflow: hidden; border: 1px solid var(--line);
  transition: transform 0.5s var(--ease), border-color 0.5s var(--ease);
}
.gallery-item:hover { transform: translateY(-4px); border-color: rgba(201,154,106,0.45); }

/* R-18 banner */
.r18-banner {
  margin-top: clamp(40px, 6vw, 64px);
  border: 1px solid rgba(201, 154, 106, 0.35);
  border-radius: var(--radius);
  background: linear-gradient(135deg, rgba(201,154,106,0.07), rgba(201,154,106,0.02));
  padding: clamp(26px, 4vw, 40px);
  text-align: center;
}
.r18-banner .r18-mark {
  display: inline-block;
  font-family: "Cormorant Garamond", serif; font-weight: 600;
  border: 1.5px solid var(--gold); color: var(--gold);
  border-radius: 8px; padding: 4px 12px; letter-spacing: 0.1em; margin-bottom: 16px;
}
.r18-banner h3 { font-weight: 500; letter-spacing: 0.08em; font-size: 1.3rem; margin-bottom: 10px; }
.r18-banner p { color: var(--text-dim); font-size: 0.92rem; margin-bottom: 22px; }

/* ===== Buttons ===== */
.btn {
  font-family: "Noto Serif JP", serif;
  font-size: 0.95rem; letter-spacing: 0.08em;
  padding: 13px 30px; border-radius: 999px; cursor: pointer;
  border: 1px solid transparent; transition: all 0.35s var(--ease);
}
.btn-primary {
  background: linear-gradient(135deg, var(--gold-bright), var(--gold));
  color: #1a140d; font-weight: 500;
  box-shadow: 0 10px 30px -12px rgba(201, 154, 106, 0.6);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 16px 36px -12px rgba(201, 154, 106, 0.75); }
.btn-ghost { background: transparent; border-color: var(--line); color: var(--text-dim); }
.btn-ghost:hover { border-color: var(--gold); color: var(--gold-bright); }

/* ===== About ===== */
.prose { max-width: 44em; }
.prose h1 { font-size: clamp(2rem, 5vw, 3rem); font-weight: 500; letter-spacing: 0.05em; margin-bottom: 24px; }
.prose h1 .gold { color: var(--gold); }
.prose p { color: var(--text-dim); margin-bottom: 18px; line-height: 1.95; }
.prose .lead { color: var(--text); font-size: 1.15rem; }

/* ===== Age gate ===== */
.agegate {
  position: fixed; inset: 0; z-index: 100;
  display: grid; place-items: center;
  padding: 24px;
  background: rgba(8, 8, 11, 0.86);
  backdrop-filter: blur(8px);
  animation: viewIn 0.4s var(--ease) both;
}
.agegate[hidden] { display: none; }
.agegate-panel {
  width: min(460px, 100%);
  background: linear-gradient(180deg, var(--bg-2), var(--bg-1));
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: clamp(28px, 5vw, 44px);
  text-align: center;
  box-shadow: 0 40px 90px -30px rgba(0,0,0,0.9);
}
.agegate-mark {
  display: inline-block;
  font-family: "Cormorant Garamond", serif; font-weight: 600; font-size: 1.4rem;
  border: 2px solid var(--gold); color: var(--gold);
  border-radius: 10px; padding: 6px 16px; letter-spacing: 0.08em; margin-bottom: 22px;
}
.agegate-title { font-size: 1.4rem; font-weight: 500; letter-spacing: 0.06em; margin-bottom: 16px; }
.agegate-lead { color: var(--text-dim); margin-bottom: 28px; line-height: 1.8; }
.agegate-actions { display: flex; flex-direction: column; gap: 12px; }
.agegate-fine { color: var(--text-faint); font-size: 0.76rem; line-height: 1.7; margin-top: 22px; }

/* ===== Phase 2 notice (inside gate after はい) ===== */
.gate-soon { text-align: center; }
.gate-soon .soon-badge {
  font-family: "Cormorant Garamond", serif; letter-spacing: 0.3em;
  color: var(--gold); font-size: 0.85rem; margin-bottom: 16px;
}

/* ===== Footer ===== */
.site-footer {
  border-top: 1px solid var(--line);
  text-align: center;
  padding: 50px 24px 60px;
  background: var(--bg-0);
}
.footer-brand { font-size: 1.6rem; font-weight: 500; letter-spacing: 0.1em; margin-bottom: 18px; }
.footer-meta { color: var(--text-faint); font-size: 0.82rem; letter-spacing: 0.05em; line-height: 1.9; }
.footer-note { color: var(--text-faint); font-size: 0.74rem; margin-top: 18px; max-width: 34em; margin-inline: auto; line-height: 1.7; }

/* ===== Responsive ===== */
@media (max-width: 760px) {
  .detail-hero { grid-template-columns: 1fr; }
  .site-nav { gap: 18px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
}