/* ============================================
   占いポータル ─ 共通スタイル
   モバイルファースト ・ 神秘的グラデーション
   ============================================ */

:root {
  /* カラーパレット */
  --bg-deep:    #0d0820;
  --bg-mid:     #1a1235;
  --bg-soft:    #2a1d52;
  --panel:      rgba(34, 22, 70, 0.78);
  --panel-edge: rgba(180, 150, 255, 0.18);
  --gold:       #f5d76e;
  --gold-soft:  #d4af37;
  --purple:     #b48cff;
  --pink:       #ff8fd0;
  --cyan:       #7ddff5;
  --text:       #f4f0ff;
  --text-soft:  #c9bee5;
  --text-mute:  #8c7eb5;
  --good:       #6fdca5;
  --warn:       #ffb454;
  --bad:        #ff7a8e;
  --shadow-1:   0 10px 30px rgba(0,0,0,.45);
  --shadow-2:   0 4px 18px rgba(120, 90, 220, .25);
  --radius-lg:  20px;
  --radius-md:  14px;
  --radius-sm:  10px;
}

/* ───── Reset ───── */
*,*::before,*::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}
body {
  font-family: 'Noto Sans JP', 'Hiragino Sans', 'ヒラギノ角ゴ ProN', sans-serif;
  color: var(--text);
  line-height: 1.7;
  font-size: 15px;
  background:
    radial-gradient(ellipse at 25% 10%, #3a1f6b 0%, transparent 55%),
    radial-gradient(ellipse at 80% 90%, #1d3b6b 0%, transparent 50%),
    #14092e;
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-tap-highlight-color: transparent;
}
img, svg { display: block; max-width: 100%; }
h1,h2,h3,h4,h5,h6 { margin: 0; line-height: 1.4; }
p { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
button { font-family: inherit; cursor: pointer; }
input, button, select { font-family: inherit; font-size: inherit; color: inherit; }
a { color: var(--purple); text-decoration: none; }

/* ───── 星空背景（静的1層・全環境共通） ───── */
.bg-stars {
  position: absolute; inset: 0;
  z-index: 0; pointer-events: none;
  overflow: hidden;
  height: 100%;
}
.bg-stars__layer {
  position: absolute; inset: 0;
  background-image:
    radial-gradient(1px 1px at 20% 30%, #fff 50%, transparent),
    radial-gradient(1px 1px at 50% 70%, #fff 50%, transparent),
    radial-gradient(2px 2px at 80% 10%, #f5d76e 50%, transparent),
    radial-gradient(1px 1px at 15% 80%, #b48cff 50%, transparent),
    radial-gradient(1.5px 1.5px at 65% 40%, #fff 50%, transparent),
    radial-gradient(1px 1px at 90% 60%, #fff 50%, transparent),
    radial-gradient(1px 1px at 35% 50%, #fff 50%, transparent),
    radial-gradient(2px 2px at 5% 25%, #ff8fd0 50%, transparent),
    radial-gradient(1px 1px at 70% 85%, #fff 50%, transparent),
    radial-gradient(1px 1px at 45% 15%, #fff 50%, transparent);
  background-size: 400px 400px;
  background-repeat: repeat;
  opacity: .45;
}
.bg-stars__layer:nth-child(2),
.bg-stars__layer:nth-child(3) { display: none; }

/* ───── ヘッダー ───── */
.site-header {
  position: relative; z-index: 2;
  padding: 18px 20px;
  display: flex; align-items: center; justify-content: space-between;
}
.brand { display: flex; align-items: center; gap: 12px; }
.brand__logo {
  width: 44px; height: 44px; border-radius: 50%;
  display: grid; place-items: center;
  font-size: 26px;
  background: linear-gradient(135deg, #f5d76e, #d4af37);
  color: #2a1a05;
}
.brand__name { display: flex; flex-direction: column; line-height: 1.1; }
.brand__title {
  font-family: 'Noto Serif JP', serif; font-weight: 700;
  font-size: 18px; letter-spacing: .04em;
  background: linear-gradient(120deg, #f5d76e, #ffe7a3);
  -webkit-background-clip: text; background-clip: text;
  color: transparent;
}
.brand__sub {
  font-family: 'Georgia', 'Times New Roman', serif;
  font-size: 10.5px;
  letter-spacing: .25em;
  color: var(--text-mute);
  margin-top: 2px;
}

/* ───── Main ───── */
.main-index {
  position: relative; z-index: 1;
  max-width: 720px;
  margin: 0 auto;
  padding: 0 16px 60px;
}

/* ───── Hero ───── */
.hero { padding: 24px 0 28px; text-align: center; }
.hero__eyebrow {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .15em;
  color: var(--gold);
  background: rgba(245, 215, 110, .12);
  border: 1px solid rgba(245, 215, 110, .35);
  padding: 5px 12px;
  border-radius: 999px;
  margin-bottom: 14px;
}
.hero__title {
  font-family: 'Noto Serif JP', serif;
  font-weight: 900;
  font-size: 34px;
  line-height: 1.15;
  margin-bottom: 14px;
  letter-spacing: .02em;
  display: flex; flex-direction: column; align-items: center; gap: 4px;
}
.hero__title span:first-child { color: var(--text); }
.hero__title-em {
  font-size: 46px;
  background: linear-gradient(120deg, #f5d76e 0%, #ff8fd0 50%, #b48cff 100%);
  -webkit-background-clip: text; background-clip: text;
  color: transparent;
}
.hero__lead {
  color: var(--text-soft);
  font-size: 15px;
  margin: 8px 0 20px;
}
.hero__badges {
  display: flex; flex-wrap: wrap; gap: 6px; justify-content: center;
  margin-top: 16px;
}
.hero__badges li {
  font-size: 11px;
  padding: 5px 10px;
  border-radius: 999px;
  background: rgba(180, 140, 255, .12);
  border: 1px solid rgba(180, 140, 255, .25);
  color: var(--text-soft);
  letter-spacing: .04em;
}

/* ───── フォームカード ───── */
.form-card {
  background: rgba(34, 22, 70, 0.92);
  border: 1px solid var(--panel-edge);
  border-radius: var(--radius-lg);
  padding: 24px 20px 28px;
  margin: 8px 0 36px;
  box-shadow: var(--shadow-1);
  position: relative;
  overflow: hidden;
}
.form-card::before {
  content: '';
  position: absolute; inset: 0;
  background: radial-gradient(circle at 50% 0%, rgba(245, 215, 110, .12), transparent 60%);
  pointer-events: none;
}
.form-card__title {
  font-family: 'Noto Serif JP', serif;
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 18px;
  text-align: center;
  position: relative;
  color: var(--gold);
}
.form-card__title::after {
  content: '';
  display: block;
  width: 50px; height: 2px;
  margin: 8px auto 0;
  background: linear-gradient(90deg, transparent, var(--gold), transparent);
}
.form-card__note {
  margin-top: 14px;
  font-size: 11px;
  color: var(--text-mute);
  text-align: center;
  line-height: 1.5;
}

.field-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}
.field-group {
  margin-bottom: 16px;
  position: relative;
}
.field-group label {
  display: block;
  font-size: 13px;
  font-weight: 500;
  margin-bottom: 6px;
  color: var(--text-soft);
  letter-spacing: .04em;
}
.field-group .required {
  color: var(--bad);
  margin-left: 3px;
  font-size: 12px;
}
.field-group input[type="text"],
.field-group input[type="date"] {
  width: 100%;
  padding: 14px 14px;
  font-size: 16px; /* 16px未満だとiOSでズームされる */
  background: rgba(13, 8, 32, 0.55);
  border: 1.5px solid rgba(180, 140, 255, .25);
  border-radius: var(--radius-md);
  color: var(--text);
  transition: border-color .2s, box-shadow .2s, background .2s;
  -webkit-appearance: none;
  appearance: none;
  outline: none;
}
.field-group input::placeholder { color: var(--text-mute); }
.field-group input:focus {
  border-color: var(--gold);
  background: rgba(13, 8, 32, 0.75);
  box-shadow: 0 0 0 3px rgba(245, 215, 110, .15);
}
/* date input のアイコン色 */
.field-group input[type="date"]::-webkit-calendar-picker-indicator {
  filter: invert(.85) brightness(1.3);
  cursor: pointer;
  opacity: .8;
}

/* ───── ラジオボタン ───── */
.radio-group {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}
.radio {
  display: flex; align-items: center; justify-content: center;
  padding: 14px 12px;
  background: rgba(13, 8, 32, .55);
  border: 1.5px solid rgba(180, 140, 255, .25);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all .2s;
  font-weight: 500;
}
.radio input[type="radio"] {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}
.radio span {
  font-size: 15px;
  color: var(--text-soft);
}
.radio:has(input:checked) {
  background: linear-gradient(135deg, rgba(245,215,110,.18), rgba(180,140,255,.18));
  border-color: var(--gold);
  box-shadow: 0 0 0 1px var(--gold);
}
.radio:has(input:checked) span { color: var(--gold); }

/* ───── 送信ボタン ───── */
.submit-btn {
  width: 100%;
  padding: 18px 16px;
  margin-top: 8px;
  font-size: 16px;
  font-weight: 700;
  letter-spacing: .04em;
  color: #1a0e3d;
  background: linear-gradient(120deg, #ffe7a3 0%, #f5d76e 50%, #d4af37 100%);
  border: none;
  border-radius: var(--radius-md);
  box-shadow: 0 4px 12px rgba(245, 215, 110, .25);
  display: flex; align-items: center; justify-content: center; gap: 10px;
  transition: transform .12s;
  position: relative;
}
.submit-btn:hover { transform: translateY(-1px); }
.submit-btn:active { transform: translateY(0); }
.submit-btn:disabled {
  opacity: .65;
  cursor: not-allowed;
  transform: none;
}
.submit-btn__arrow {
  transition: transform .2s;
}
.submit-btn:hover .submit-btn__arrow {
  transform: translateX(4px);
}

.form-error {
  margin-top: 12px;
  padding: 10px 14px;
  background: rgba(255, 122, 142, .15);
  border: 1px solid rgba(255, 122, 142, .4);
  border-radius: var(--radius-sm);
  color: #ffb8c4;
  font-size: 13px;
  text-align: center;
}

/* ───── Features ───── */
.features { padding: 8px 0; }
.features__title {
  font-family: 'Noto Serif JP', serif;
  font-size: 20px; font-weight: 700;
  text-align: center;
  margin-bottom: 22px;
  color: var(--text);
}
.features__title::after {
  content: '';
  display: block;
  width: 40px; height: 2px;
  margin: 10px auto 0;
  background: linear-gradient(90deg, transparent, var(--gold), transparent);
}
.features__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}
.feature-card {
  background: rgba(34, 22, 70, .85);
  border: 1px solid var(--panel-edge);
  border-radius: var(--radius-md);
  padding: 18px 14px;
  text-align: center;
  transition: transform .15s, border-color .15s;
}
.feature-card:hover {
  border-color: rgba(245, 215, 110, .4);
}
.feature-card__icon {
  width: 44px; height: 44px;
  margin: 0 auto 10px;
  display: grid; place-items: center;
  font-size: 22px;
  font-family: 'Noto Serif JP', serif;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(245,215,110,.25), rgba(180,140,255,.25));
  border: 1px solid rgba(245, 215, 110, .3);
  color: var(--gold);
}
.feature-card h3 {
  font-family: 'Noto Serif JP', serif;
  font-size: 14.5px;
  margin-bottom: 6px;
  color: var(--text);
}
.feature-card p {
  font-size: 11.5px;
  line-height: 1.55;
  color: var(--text-mute);
}

/* ───── About / FAQ ───── */
.about {
  margin-top: 40px;
  padding: 24px 20px;
  background: rgba(34, 22, 70, .85);
  border: 1px solid var(--panel-edge);
  border-radius: var(--radius-lg);
  text-align: center;
}
.about__title {
  font-family: 'Noto Serif JP', serif;
  font-size: 18px;
  margin-bottom: 14px;
  color: var(--gold);
}
.about__title::after {
  content: '';
  display: block;
  width: 40px; height: 2px;
  margin: 8px auto 0;
  background: linear-gradient(90deg, transparent, var(--gold), transparent);
}
.about__lead {
  font-size: 13.5px;
  line-height: 1.85;
  color: var(--text-soft);
  text-align: left;
}

.faq {
  margin-top: 24px;
  padding: 24px 20px;
  background: rgba(34, 22, 70, .85);
  border: 1px solid var(--panel-edge);
  border-radius: var(--radius-lg);
}
.faq__title {
  font-family: 'Noto Serif JP', serif;
  font-size: 18px;
  text-align: center;
  margin-bottom: 18px;
  color: var(--gold);
}
.faq__title::after {
  content: '';
  display: block;
  width: 40px; height: 2px;
  margin: 8px auto 0;
  background: linear-gradient(90deg, transparent, var(--gold), transparent);
}
.faq__list { display: flex; flex-direction: column; gap: 10px; }
.faq-item {
  background: rgba(13, 8, 32, .55);
  border: 1px solid rgba(180, 140, 255, .18);
  border-radius: var(--radius-md);
  padding: 12px 14px;
}
.faq-item summary {
  font-size: 14px;
  font-weight: 700;
  color: var(--text);
  cursor: pointer;
  list-style: none;
  position: relative;
  padding-right: 24px;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: '+';
  position: absolute;
  right: 0; top: 50%;
  transform: translateY(-50%);
  font-size: 20px;
  font-weight: 400;
  color: var(--gold);
  transition: transform .2s;
}
.faq-item[open] summary::after { content: '−'; }
.faq-item p {
  margin-top: 10px;
  padding-top: 10px;
  border-top: 1px solid rgba(180, 140, 255, .15);
  font-size: 13px;
  line-height: 1.75;
  color: var(--text-soft);
}

/* ───── Footer ───── */
.site-footer {
  position: relative; z-index: 1;
  padding: 30px 16px 24px;
  text-align: center;
}
.site-footer p {
  font-family: 'Georgia', 'Times New Roman', serif;
  font-size: 11px;
  letter-spacing: .2em;
  color: var(--text-mute);
}

/* ───── ローディング ───── */
.loading-overlay {
  position: fixed; inset: 0;
  z-index: 999;
  background: rgba(13, 8, 32, .96);
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 20px;
  color: var(--gold);
}
body.loading .loading-overlay { display: flex; }
.spinner {
  width: 60px; height: 60px;
  border: 3px solid rgba(245, 215, 110, .2);
  border-top-color: var(--gold);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ============================================
   タブレット〜PC レスポンシブ
   ============================================ */
@media (min-width: 640px) {
  body { font-size: 16px; }
  .main-index { padding: 0 24px 80px; }
  .hero { padding: 40px 0 40px; }
  .hero__title { font-size: 42px; }
  .hero__title-em { font-size: 58px; }
  .hero__lead { font-size: 17px; }
  .form-card { padding: 32px 30px 34px; }
  .form-card__title { font-size: 20px; }
  .features__grid { grid-template-columns: 1fr 1fr 1fr; gap: 16px; }
  .feature-card { padding: 22px 16px; }
  .feature-card__icon { width: 52px; height: 52px; font-size: 26px; }
  .feature-card h3 { font-size: 16px; }
  .feature-card p { font-size: 12.5px; }
}

@media (min-width: 960px) {
  .hero__title { font-size: 48px; }
  .hero__title-em { font-size: 68px; }
}

/* iOS Safari ノッチ対応 */
@supports (padding: env(safe-area-inset-bottom)) {
  body {
    padding-bottom: env(safe-area-inset-bottom);
  }
  .site-header {
    padding-top: max(18px, env(safe-area-inset-top));
  }
}