/* 祝日アラーム 公式サイト — 2.0「夜明けの空」 */
:root {
  --yoru: #0e1433;
  --yoru-2: #18214a;
  --ai: #2b3b9f;
  --ai-light: #9aa6ff;
  --shinonome: #f2a07b;
  --asa: #f4f7fc;
  --tsuki: #ffe3a6;
  --shu: #b3261e;
  --ink: #1b2140;
  --muted: #454d6b;
  --line: #dde3f0;
  --card: #ffffff;
  --round: "Zen Maru Gothic", "Hiragino Maru Gothic ProN", "Hiragino Sans", sans-serif;
  --radius: 22px;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--asa);
  color: var(--ink);
  font: 17px/1.9 -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Noto Sans JP", sans-serif;
  font-feature-settings: "palt" 1;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--ai); text-underline-offset: 4px; }
a:focus-visible, button:focus-visible, summary:focus-visible {
  outline: 3px solid var(--shinonome);
  outline-offset: 4px;
  border-radius: 8px;
}
h1, h2, h3 { font-family: var(--round); font-weight: 900; line-height: 1.35; letter-spacing: .01em; margin: 0; }
h2 { font-size: clamp(28px, 4.4vw, 44px); }
h3 { font-size: 22px; font-weight: 700; }
p { margin: 0 0 1em; }
.wrap { width: min(1080px, 100% - 40px); margin-inline: auto; }
.skip { position: absolute; left: -999px; top: 8px; background: #fff; padding: 8px 14px; border-radius: 10px; z-index: 50; }
.skip:focus { left: 12px; }

/* ヘッダー */
.site-header {
  position: fixed; inset: 0 0 auto; z-index: 20;
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 14px 20px;
  color: #fff;
  transition: background .35s ease, color .35s ease, box-shadow .35s ease;
}
.site-header.solid {
  background: rgba(244, 247, 252, .86);
  backdrop-filter: saturate(1.4) blur(14px);
  -webkit-backdrop-filter: saturate(1.4) blur(14px);
  color: var(--ink);
  box-shadow: 0 1px 0 var(--line);
}
.brand { display: flex; align-items: center; gap: 10px; color: inherit; text-decoration: none; font-family: var(--round); font-weight: 900; font-size: 19px; }
.brand img { width: 36px; height: 36px; border-radius: 9px; }
.site-header nav { display: flex; gap: 22px; font-size: 15px; font-weight: 600; }
.site-header nav a { color: inherit; text-decoration: none; }
.site-header nav a:hover { text-decoration: underline; }

/* ヒーロー：スクロールで夜 → 朝 */
.hero { position: relative; height: 260vh; background: var(--yoru); }
.hero-stage { position: sticky; top: 0; height: 100vh; height: 100svh; overflow: hidden; color: #fff; }
#sky { position: absolute; inset: 0; width: 100%; height: 100%; }
.hero-copy {
  position: relative; z-index: 2;
  width: min(1080px, 100% - 40px); margin: 0 auto;
  padding-top: clamp(110px, 17vh, 170px);
}
.hero h1 { font-size: clamp(40px, 7.4vw, 86px); text-shadow: 0 2px 24px rgba(14, 20, 51, .35); }
.hero .lead { font-size: clamp(17px, 2vw, 21px); max-width: 30em; margin-top: 18px; text-shadow: 0 1px 12px rgba(14, 20, 51, .45); }
.hero-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 14px 22px; margin-top: 26px; }
.hint { font-size: 14px; opacity: .85; transition: opacity .4s; }

.store-btn {
  display: inline-flex; align-items: center; gap: 10px;
  background: #fff; color: var(--ink);
  font-weight: 700; text-decoration: none;
  padding: 12px 20px 12px 16px; border-radius: 14px;
  box-shadow: 0 10px 30px rgba(14, 20, 51, .25);
  transition: transform .2s cubic-bezier(.2, .8, .2, 1), box-shadow .2s;
}
.store-btn:hover { transform: translateY(-2px); box-shadow: 0 14px 34px rgba(14, 20, 51, .32); }
.store-btn svg { width: 22px; height: 22px; }
.store-btn small { display: block; font-size: 11px; font-weight: 600; opacity: .7; line-height: 1.2; }
.store-btn span { line-height: 1.25; }
.store-btn.dark { background: var(--ai); color: #fff; }

/* 1 週間のストリップ */
.week {
  position: absolute; z-index: 2; left: 50%; bottom: clamp(26px, 7vh, 70px);
  transform: translateX(-50%);
  display: grid; grid-template-columns: repeat(7, minmax(0, 1fr)); gap: 10px;
  width: min(760px, 100% - 28px);
}
.day {
  position: relative;
  background: rgba(255, 255, 255, .14);
  border: 1px solid rgba(255, 255, 255, .28);
  -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px);
  border-radius: 18px; padding: 10px 4px 12px; text-align: center;
  font-family: var(--round); color: #fff;
  transition: background .6s, color .6s, border-color .6s;
}
.day .wd { font-size: 13px; font-weight: 700; opacity: .9; }
.day .dt { font-size: 20px; font-weight: 900; line-height: 1.3; }
.day .mark { position: relative; height: 34px; margin: 4px 0 2px; }
.day .mark svg { position: absolute; left: 50%; top: 50%; width: 30px; height: 30px; transform: translate(-50%, -50%); transition: transform .8s cubic-bezier(.3, 1.4, .5, 1), opacity .5s; }
.day .cap { font-size: 12px; font-weight: 700; min-height: 1.4em; white-space: nowrap; }
.day.off .mark .sun { opacity: 0; }
.day.off { opacity: .72; }
.day.holiday .wd, .day.holiday .dt { color: #ffd0c8; }
.day .zzz { position: absolute; right: 6px; top: 34px; font-size: 12px; font-weight: 900; color: var(--tsuki); opacity: 0; }
/* 朝になったら（JS が .morning を付ける） */
.hero-stage.lit .day { background: rgba(255, 255, 255, .82); color: var(--ink); border-color: rgba(255, 255, 255, .9); }
.hero-stage.lit .day.holiday .wd, .hero-stage.lit .day.holiday .dt, .hero-stage.lit .day.holiday .cap { color: var(--shu); }
.day .moon { opacity: 0; transform: translate(-50%, 40%) scale(.6); }
.day.rest .sun { opacity: 0; transform: translate(-50%, 70%) scale(.5); }
.day.rest .moon { opacity: 1; transform: translate(-50%, -50%) scale(1); }
.day.rest .zzz { animation: zzz 2.4s ease-in-out infinite; }
@keyframes zzz {
  0% { opacity: 0; transform: translate(0, 4px); }
  30% { opacity: 1; }
  100% { opacity: 0; transform: translate(8px, -14px); }
}

/* セクション共通 */
.section { padding: clamp(80px, 12vw, 140px) 0; }
.section-head { max-width: 640px; margin-bottom: 48px; }
.section-head p { color: var(--muted); margin-top: 14px; }

/* できること：実画面と一言を左右交互に */
.feature {
  display: grid; grid-template-columns: 1fr 1fr; gap: clamp(28px, 6vw, 88px);
  align-items: center; margin-bottom: clamp(70px, 10vw, 120px);
}
.feature:nth-child(even) .phone { order: 2; }
.feature h3 { font-size: clamp(24px, 3.2vw, 32px); font-weight: 900; margin-bottom: 14px; }
.feature p { color: var(--muted); }
.feature .tag { display: inline-block; font-family: var(--round); font-weight: 700; font-size: 14px; color: var(--ai); margin-bottom: 8px; }
.phone {
  justify-self: center; width: min(300px, 78vw);
  border-radius: 46px; padding: 10px; background: var(--ink);
  box-shadow: 0 30px 60px -20px rgba(27, 33, 64, .45);
  transform: translateY(40px); opacity: 0;
  transition: transform 1s cubic-bezier(.2, .8, .2, 1), opacity 1s;
}
.phone img { border-radius: 37px; width: 100%; }
.phone.in { transform: none; opacity: 1; }
.checks { list-style: none; padding: 0; margin: 18px 0 0; }
.checks li { position: relative; padding-left: 30px; margin: 8px 0; }
.checks li::before {
  content: ""; position: absolute; left: 0; top: .55em; width: 18px; height: 18px; border-radius: 50%;
  background: radial-gradient(circle at 35% 35%, #fff4d6, var(--tsuki) 60%, #f3c96b);
}

/* 音 */
.sounds { background: var(--yoru); color: #fff; overflow: hidden; }
.sounds .section-head p { color: #c9cfe8; }
.sound-stage { display: grid; grid-template-columns: 1.05fr 1fr; gap: 40px; align-items: center; }
#halo { width: 100%; aspect-ratio: 1; max-width: 460px; justify-self: center; }
.sound-list { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.sound {
  display: flex; align-items: center; gap: 12px; width: 100%;
  background: rgba(255, 255, 255, .07); border: 1px solid rgba(255, 255, 255, .16);
  color: #fff; font: inherit; text-align: left;
  border-radius: 16px; padding: 12px 14px; cursor: pointer;
  transition: background .25s, border-color .25s;
}
.sound:hover { background: rgba(255, 255, 255, .12); }
.sound[aria-pressed="true"] { background: rgba(255, 227, 166, .16); border-color: var(--tsuki); }
.sound .ic { flex: none; width: 38px; height: 38px; border-radius: 50%; display: grid; place-items: center; background: var(--tsuki); color: var(--yoru); }
.sound .ic svg { width: 16px; height: 16px; }
.sound b { display: block; font-family: var(--round); font-weight: 700; font-size: 16px; line-height: 1.35; }
.sound small { color: #c9cfe8; font-size: 13px; }
.sound-note { color: #c9cfe8; font-size: 14px; margin-top: 18px; }

/* 料金 */
.plans { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.plan { background: var(--card); border-radius: var(--radius); padding: 30px 28px; border: 1px solid var(--line); }
.plan.premium { background: linear-gradient(170deg, #1e2a62 0%, #3b3f86 55%, #b77f86 100%); color: #fff; border: none; }
.plan .price { font-family: var(--round); font-weight: 900; font-size: 40px; line-height: 1.2; margin: 6px 0 4px; }
.plan .price small { font-size: 16px; font-weight: 700; }
.plan ul { padding-left: 1.2em; margin: 16px 0 0; }
.plan li { margin: 6px 0; }
.plan.premium .sub { color: #e6e3ff; }
.legacy {
  margin-top: 22px; display: flex; gap: 16px; align-items: flex-start;
  background: #fff; border: 2px solid var(--tsuki); border-radius: var(--radius); padding: 20px 24px;
}
.legacy svg { flex: none; width: 34px; height: 34px; }
.legacy h3 { font-size: 19px; margin-bottom: 4px; }
.legacy p { margin: 0; color: var(--muted); }

/* よくある質問 */
.faq details { background: var(--card); border: 1px solid var(--line); border-radius: 18px; padding: 4px 22px; margin-bottom: 12px; }
.faq summary { cursor: pointer; font-family: var(--round); font-weight: 700; font-size: 18px; padding: 14px 0; list-style: none; display: flex; justify-content: space-between; gap: 12px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "＋"; color: var(--ai); transition: transform .3s; }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details p { color: var(--muted); }

/* フッター：夜空 */
.site-footer { position: relative; background: var(--yoru); color: #dfe3f5; overflow: hidden; }
#footerSky { position: absolute; inset: 0; width: 100%; height: 100%; }
.footer-inner { position: relative; padding: 110px 0 44px; }
.footer-inner h2 { color: #fff; margin-bottom: 16px; }
.nb { white-space: nowrap; }
.footer-inner .store-btn { margin-top: 12px; }
.footer-inner p { max-width: 34em; }
.footer-links { display: flex; flex-wrap: wrap; gap: 8px 22px; margin-top: 60px; font-size: 14px; }
.footer-links a { color: #dfe3f5; }
.footer-meta { font-size: 13px; color: #aeb5d6; margin-top: 14px; }

/* 読み物ページ（使い方・プライバシー） */
.page-top { background: linear-gradient(180deg, var(--yoru) 0%, #3a3f87 70%, #c98a86 100%); color: #fff; padding: 130px 0 70px; }
.page-top h1 { font-size: clamp(32px, 5.6vw, 54px); }
.page-top p { margin-top: 14px; color: #e3e6f7; max-width: 36em; }
.doc { max-width: 760px; margin: 0 auto; padding: 56px 20px 90px; }
.doc h2 { font-size: clamp(22px, 3vw, 28px); margin: 48px 0 12px; }
.doc h3 { font-size: 19px; margin: 26px 0 8px; }
.doc ol, .doc ul { padding-left: 1.3em; }
.doc li { margin: 6px 0; }
.note { background: #fff; border-left: 5px solid var(--shinonome); border-radius: 0 14px 14px 0; padding: 14px 20px; }
.step { display: grid; grid-template-columns: 1fr 190px; gap: 26px; align-items: start; }
.step img { border-radius: 26px; border: 7px solid var(--ink); }

@media (max-width: 760px) {
  .site-header nav { gap: 14px; font-size: 14px; }
  .site-header nav .wide { display: none; }
  .feature, .sound-stage, .plans, .step { grid-template-columns: 1fr; }
  .feature:nth-child(even) .phone { order: 0; }
  .week { gap: 5px; }
  .day { border-radius: 13px; padding: 7px 2px 9px; }
  .day .dt { font-size: 16px; }
  .day .cap { font-size: 10px; }
  .day .mark { height: 28px; }
  .day .mark svg { width: 24px; height: 24px; }
  .sound-list { grid-template-columns: 1fr; }
  #halo { max-width: 300px; }
  .step img { width: 180px; }
}

@media (prefers-reduced-motion: reduce) {
  .hero { height: auto; }
  .hero-stage { position: relative; height: 100vh; height: 100svh; }
  .phone { transform: none; opacity: 1; transition: none; }
  .day .mark svg, .day { transition: none; }
  .day.rest .zzz { animation: none; opacity: 1; }
  .store-btn { transition: none; }
}