/* ========================================
   YouTube運用 LP — style.css
   PSD画像ベース + SEO非表示テキスト構成
   ======================================== */

/* --- Reset & Base --- */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: 'Noto Sans JP', sans-serif;
  font-weight: 400;
  line-height: 1.8;
  color: #1f2937;
  background: #fff;
  overflow-x: hidden;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

ul, ol {
  list-style: none;
}

/* --- Variables --- */
:root {
  --color-navy-dark: #1f2937;
  --max-width: 750px;
}

/* ========================================
   SEO: Screen-Reader Only Text
   視覚的に非表示だがクローラーには認識される
   ======================================== */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ========================================
   SECTION (共通)
   ======================================== */
.section {
  position: relative;
  max-width: var(--max-width);
  margin: 0 auto;
}

.section__img-wrap {
  position: relative;
  width: 100%;
}

.section__img {
  width: 100%;
  height: auto;
  display: block;
}

/* ========================================
   CTA BUTTON OVERLAY
   画像内のCTAボタン位置に透明クリッカブル領域を配置
   ======================================== */
.btn-overlay {
  position: absolute;
  display: block;
  cursor: pointer;
  z-index: 2;
  /* ホバー時にうっすらハイライト */
  transition: background 0.2s ease;
  border-radius: 50px;
}

.btn-overlay:hover {
  background: rgba(255, 255, 255, 0.12);
}

.btn-overlay:active {
  background: rgba(0, 0, 0, 0.05);
}

/* Hero CTA: パディング込みの位置再計算 (770x1457 at 1x) */
.btn-overlay--hero {
  left: 5.58%;
  top: 84.22%;
  width: 86.49%;
  height: 10.50%;
}

/* Profile YouTube button:「出演＆運用中のチャンネルはこちら」(770x1616 at 1x) */
.btn-overlay--youtube {
  left: 10.39%;
  top: 92.88%;
  width: 81.82%;
  height: 3.40%;
  border-radius: 8px;
}

/* CTA Footer button:「無料相談はこちら」(770x611 at 1x) */
.btn-overlay--cta {
  left: 8%;
  top: 64%;
  width: 84%;
  height: 15%;
}

/* ========================================
   YouTube Embed
   プロフィールセクションの動画埋め込み
   ======================================== */
.section__youtube {
  position: relative;
  width: 88%;
  margin: 0 auto;
  padding-bottom: 49.5%; /* 16:9 ratio based on 88% width */
  height: 0;
  overflow: hidden;
  border-radius: 12px;
  margin-top: 16px;
  margin-bottom: 24px;
}

.section__youtube iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border-radius: 12px;
}

/* ========================================
   CTA BUTTON IMAGE (独立ボタン)
   ======================================== */
.section__cta-btn {
  text-align: center;
  padding: 32px 24px 48px;
}

.btn-cta-img {
  display: inline-block;
  max-width: 480px;
  width: 88.8%;
  transition: transform 0.2s ease, box-shadow 0.3s ease;
  border-radius: 50px;
  overflow: hidden;
}

.btn-cta-img:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 24px rgba(228, 83, 88, 0.35);
}

.btn-cta-img:active {
  transform: translateY(0);
}

.btn-cta-img img {
  width: 100%;
  height: auto;
  display: block;
}

/* ========================================
   FOOTER
   ======================================== */
.footer {
  background: var(--color-navy-dark);
  color: rgba(255, 255, 255, 0.6);
  text-align: center;
  padding: 24px;
  font-size: 0.75rem;
}