/* =========================
   基本設定
========================= */
:root{
  --maxw: 1100px;
  --pad: 16px;
  --green: #06c755;
}

*,
*::before,
*::after{
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: 'Noto Sans JP', sans-serif;
  line-height: 1.7;
  color: #333;
  background-color: #fff;
}

/* =========================
   ヘッダー（stickyで安定）
========================= */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(8px);
  box-shadow: 0 2px 10px rgba(0,0,0,0.06);
}

.header-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 14px var(--pad);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}

.logo {
  font-size: 18px;
  font-weight: 700;
  white-space: nowrap;
}

.logo-link {
  text-decoration: none;
  color: inherit;
}

.nav ul {
  display: flex;
  list-style: none;
  gap: 18px;
  margin: 0;
  padding: 0;
  align-items: center;
}

.nav a {
  text-decoration: none;
  color: #333;
  font-weight: 700;
  font-size: 14px;
  transition: color 0.2s ease;
}

.nav a:hover {
  color: var(--green);
}

/* =========================
   ヒーロー（暗め背景）
========================= */
.hero {
  width: 100%;
  position: relative;
  overflow: hidden;

  /* 👇 高さ調整はここ */
  min-height: 45vh;
  max-height: 420px;

  padding: 64px var(--pad);

  display: flex;
  justify-content: center;
  align-items: center;
  text-align: center;

  background-image: url('../../images/header.jpg');
  background-size: cover;
  background-position: center 35%;
  background-repeat: no-repeat;
}

/* 暗幕（画像だけ暗くする） */
.hero::before{
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.45); /* ← 暗さはここで調整 */
  pointer-events: none;
}

/* hero内テキスト */
.hero-inner{
  position: relative;
  max-width: 820px;
  width: 100%;
}

.hero h1 {
  margin: 0 0 10px;
  font-size: clamp(26px, 4vw, 44px);
  line-height: 1.2;
  color: #fff;
  text-shadow: 0 2px 8px rgba(0,0,0,0.4);
}

.hero p {
  margin: 0;
  font-size: clamp(14px, 2vw, 18px);
  color: #fff;
  text-shadow: 0 2px 8px rgba(0,0,0,0.4);
}

/* =========================
   共通セクション
========================= */
main section:not(.hero) {
  padding: 60px var(--pad) 40px;
  max-width: 900px;
  margin: 0 auto;
}

.catch {
  text-align: center;
}

/* =========================
   FEATURES（おすすめ3つ）
========================= */
.features{
  max-width: 1000px;
  margin: 0 auto;
  padding: 60px var(--pad) 40px;
  text-align: center;
}

.features h2{
  margin: 0 0 22px;
  font-size: 24px;
}

.feature-items{
  display: grid;
  gap: 18px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.feature{
  background: #fafafa;
  border: 1px solid rgba(0,0,0,0.06);
  border-radius: 14px;
  padding: 22px 18px;
  box-shadow: 0 8px 18px rgba(0,0,0,0.04);
  text-align: left;
}

.feature-icon{
  font-size: 26px;
  margin-bottom: 10px;
}

.feature h3{
  margin: 0 0 8px;
  font-size: 18px;
  color: #111;
}

.feature p{
  margin: 0;
  color: #444;
  line-height: 1.7;
  font-size: 15px;
}

.features-cta{
  margin-top: 20px;
}

/* スマホ：3列→1列 */
@media (max-width: 768px){
  .feature-items{
    grid-template-columns: 1fr;
  }
  .features{
    padding: 50px var(--pad) 30px;
  }
}

/* =========================
   LINEボタン
========================= */
.btn-line {
  display: inline-block;
  background: var(--green);
  color: #fff;
  padding: 12px 22px;
  text-decoration: none;
  border-radius: 10px;
  font-weight: 700;
  margin-top: 1rem;
  box-shadow: 0 8px 18px rgba(6,199,85,0.22);
  transition: transform 0.15s ease, filter 0.15s ease;
}

.btn-line:hover{
  transform: translateY(-1px);
  filter: brightness(0.96);
}

/* =========================
   タイムライン（目盛り＋レーン）
========================= */
.timeline{
  max-width: 900px;
  margin: 0 auto;
  padding: 24px 0; /* about内に入れる前提で横paddingはsection側に任せる */
}

.ticks{
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  font-size: 12px;
  color: #666;
  margin: 10px 0 8px;
}

.ticks span{ text-align: center; }
.ticks span:first-child{ text-align: left; }
.ticks span:last-child{ text-align: right; }

/* 60分 = 60列 */
.lane{
  position: relative;
  display: grid;
  grid-template-columns: repeat(60, 1fr);
  height: 64px;
  border: 1px solid rgba(0,0,0,0.12);
  border-radius: 12px;

  /* 吹き出しが外に出るので visible にする */
  overflow: visible;

  background: #fafafa;
}

/* 15分ごとの薄いガイド線（0/15/30/45/60） */
.lane::before{
  content:"";
  position:absolute;
  inset:0;
  background:
    repeating-linear-gradient(
      to right,
      rgba(0,0,0,0.08) 0,
      rgba(0,0,0,0.08) 1px,
      transparent 1px,
      transparent calc(25% - 0px)
    );
  pointer-events:none;
  opacity: 0.6;
  border-radius: 12px;
}

/* =========================
   タイムライン：吹き出し（details/summary）版
   ※HTMLが <details class="block warmup tip"> の想定
========================= */

/* details自体（グリッドアイテム） */
.block.tip{
  position: relative;
  padding: 0;
  margin: 0;
  border: 0;
  background: transparent;
  z-index: 2; /* ガイド線より前 */
}

/* summaryをバーとして表示 */
.block.tip > summary{
  list-style: none;
  cursor: pointer;
  user-select: none;

  display:flex;
  align-items:center;
  justify-content:center;

  height: 48px;       /* lane(64px)内で上下に余白を残す */
  margin: 8px 6px;
  padding: 0 8px;
  border-radius: 10px;

  font-size: 13px;
  font-weight: 700;
  color: #111;
  white-space: nowrap;
}

.block.tip > summary::-webkit-details-marker{
  display:none;
}

/* 色（summaryに背景を当てる） */
.warmup.tip > summary{ background: rgba(255, 200, 0, 0.55); }
.skill.tip  > summary{ background: rgba(0, 200, 255, 0.45); }
.game.tip   > summary{ background: rgba(0, 255, 120, 0.45); }
.cool.tip   > summary{ background: rgba(180, 180, 180, 0.45); }

/* 時間配置（あなたの分配に合わせて） */
.warmup.tip{ grid-column: 1 / 11; }   /* 0-10 */
.skill.tip { grid-column: 11 / 36; }  /* 10-35（25分） */
.game.tip  { grid-column: 36 / 56; }  /* 35-55（20分） */
.cool.tip  { grid-column: 56 / 61; }  /* 55-60（5分） */

/* 開いてる時の強調 */
.block.tip[open] > summary{
  filter: brightness(0.95);
  outline: 2px solid rgba(255,255,255,0.85);
  outline-offset: 2px;
}

/* 吹き出し本体 */
.tip-box{
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  top: 100%;                 /* ← 下に出す */
  margin-top: 10px;          /* ← summaryとの間隔 */

  width: min(340px, 90vw);
  padding: 12px 14px;

  background: #ffffff;       /* ← 明るめ背景 */
  color: #333;               /* ← 文字色 */
  border-radius: 12px;

  font-size: 13px;
  line-height: 1.6;

  box-shadow: 0 10px 24px rgba(0,0,0,0.15);
  border: 1px solid rgba(0,0,0,0.08);

  z-index: 20;
}


/* 三角 */
.tip-box::after{
  content:"";
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  top: -8px;                 /* ← 上側に付ける */

  width: 0;
  height: 0;
  border-left: 8px solid transparent;
  border-right: 8px solid transparent;
  border-bottom: 8px solid #ffffff; /* ← 背景色と同じ */
}

/* hoverでも吹き出しを表示 */
.block.tip:hover .tip-box{
  display: block;
}

/* hover中はsummaryも強調 */
.block.tip:hover > summary{
  filter: brightness(0.97);
  outline: 2px solid rgba(0,0,0,0.15);
  outline-offset: 2px;
}



/* 閉じている時は非表示 */
.block.tip:not([open]) .tip-box{
  display: none;
}

/* =========================
   リスト
========================= */
ul.info-list {
  list-style: none;
  padding-left: 0;
  margin: 0;
}

ul.info-list li {
  margin: 8px 0;
}

ul.info-list li::before {
  content: "✔ ";
  color: var(--green);
  font-weight: 700;
}

/* =========================
   見出しリンク
========================= */
h2 a {
  text-decoration: none;
  color: inherit;
  transition: color 0.2s ease;
}

h2 a:hover,
h2 a:active {
  color: var(--green);
}

/* =========================
   フッター
========================= */
footer {
  text-align: center;
  background: #f6f6f6;
  padding: 1rem;
  font-size: 14px;
}

/* =========================
   フェードイン
========================= */
.fade-in {
  opacity: 0;
  transform: translateY(26px);
  transition: all 0.6s ease-out;
}

.fade-in.show {
  opacity: 1;
  transform: translateY(0);
}

/* =========================
   スマホ最適化
========================= */
@media (max-width: 768px) {
  .nav {
    display: none;
  }

  .hero {
    min-height: 38vh;
    max-height: 320px;
    padding: 48px var(--pad);
    background-position: center 30%;
  }

  /* スマホ：吹き出し幅を少し抑える */
  .tip-box{
    width: min(320px, 92vw);
  }
}
/* =========================
   LINE：QRモーダル
========================= */
.line-modal{
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  display: none;
  justify-content: center;
  align-items: center;
  z-index: 300;
  padding: 18px;
}

.line-modal.show{
  display: flex;
}

.line-modal-content{
  background: #fff;
  border-radius: 16px;
  width: min(360px, 92vw);
  padding: 20px 18px;
  text-align: center;
  position: relative;
  box-shadow: 0 18px 40px rgba(0,0,0,0.25);
}

.line-close{
  position: absolute;
  top: 10px;
  right: 12px;
  border: none;
  background: transparent;
  font-size: 22px;
  cursor: pointer;
}

.line-title{
  margin: 4px 0 6px;
  font-size: 18px;
}

.line-desc{
  margin: 0 0 12px;
  font-size: 13px;
  color: #666;
}

.line-qr{
  width: 220px;
  height: auto;
  border-radius: 10px;
  border: 1px solid rgba(0,0,0,0.08);
}

.line-note{
  margin: 12px 0 8px;
  font-size: 12px;
  color: #666;
}

.line-text{
  width: 100%;
  height: 110px;
  resize: none;
  padding: 10px;
  font-size: 12px;
  line-height: 1.5;
  border-radius: 10px;
  border: 1px solid rgba(0,0,0,0.12);
  background: #fafafa;
}