/* === 基本レイアウト === */
body, html {
  margin: 0;
  padding: 0;
  height: 100%;
  font-family: 'M PLUS 1p', sans-serif;
  background: linear-gradient(to bottom, #f9fbff, #eef2f8);
  scroll-behavior: smooth;
}

body.locked {
  overflow: hidden;
}
body.unlocked {
  overflow-y: auto;
  overflow-x: hidden;
}

body.no-scroll {
  overflow: hidden !important;
  position: fixed;
  width: 100%;
  height: 100%;
  overscroll-behavior: none;
}

/* === HEROセクション全体（動画＋演出＋キャッチコピー） === */
.hero-section {
  position: relative;
  width: 100%;
  height: 100vh;
  overflow: hidden;
}

.hero-section.show-scroll .scroll_down {
  display: block;
}

/* === scroll down 表示 === */
.scroll_down {
  display: none;
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  z-index: 28;
  pointer-events: none;
}

.scroll_down a {
  display: inline-block;
  position: absolute;
  left: 5vw;
  bottom: 10vh;
  left: 0;
  z-index: 28;
  width: 13px;
  padding: 10px 10px 110px;
  color: #fff;
  font-size: 14px;
  font-family: 'Josefin Sans', sans-serif;
  line-height: 1;
  letter-spacing: .2em;
  text-transform: uppercase;
  text-decoration: none;
  writing-mode: vertical-lr;
  transition: .2s;
  overflow: hidden;
  margin: auto;
  pointer-events: auto;
}

.scroll_down a:before,
.scroll_down a:after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 2px;
  height: 100px;
  transform: translateX(-50%);
}

.scroll_down a:before {
  background: #888;
}

.scroll_down a:after {
  background: #fff;
  animation: sdl01 1.5s cubic-bezier(1, 0, 0, 1) infinite;
}

@keyframes sdl01 {
  0% {
    transform: scale(1, 0);
    transform-origin: 0 0;
  }
  50% {
    transform: scale(1, 1);
    transform-origin: 0 0;
  }
  50.1% {
    transform: scale(1, 1);
    transform-origin: 0 100%;
  }
  100% {
    transform: scale(1, 0);
    transform-origin: 0 100%;
  }
}

/* === 背景動画（最背面） === */
.hero-section .video-container {
  position: absolute;
  top: 0; left: 0;
  width: 100%;
  height: 100vh;
  z-index: 0;
  opacity: 0;
  visibility: hidden;
  transition: opacity 1s ease;
}
.hero-section .video-container.visible {
  opacity: 1;
  visibility: visible;
}

.hero-section .video-container video {
  width: 100%;
  height: 100vh;
  object-fit: cover;
  object-position: center;
  background: black;
}

/* === テキストアニメーションエリア === */
.text-wrapper-wrapper {
  position: fixed;
  top: 45%;
  left: 50%;
  transform: translate(-50%, -50%);
  white-space: nowrap;
  text-align: center;
  z-index: 100;
}

.text-wrapper {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  white-space: nowrap;
  text-align: center;
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: #222;
  white-space: nowrap;
  text-align: center;
  opacity: 0;
  transition: opacity 0.4s ease;
  display: inline-block;
  overflow: hidden;
  z-index: 100;
  pointer-events: none;
}

.text-wrapper.visible {
  opacity: 1;
}

/* === 光バー === */
.light-bar {
  position: absolute;
  top: 50%;
  left: 0;
  width: 100%;
  height: 1.2em;
  transform: translate(-100%, -50%);
  background: linear-gradient(135deg,
    transparent 0%,
    rgba(255,255,255,0.3) 30%,
    rgba(255,255,255,1.0) 50%,
    rgba(255,255,255,0.3) 70%,
    transparent 100%);
  filter: blur(0.5px);
  box-shadow: 0 0 10px rgba(255,255,255,0.3);
  pointer-events: none;
  z-index: 11;
  opacity: 0;
}
.light-bar.active {
  animation: light-scan 0.8s ease-in-out 1 forwards;
}
@keyframes light-scan {
  0% { transform: translate(-100%, -50%); opacity: 0; }
  10% { opacity: 1; }
  90% { opacity: 1; }
  100% { transform: translate(100%, -50%); opacity: 0; }
}

/* === 各文字の変換アニメーション === */
.char {
  display: inline-block;
  opacity: 1;
  transition: transform 0.3s ease, opacity 0.3s ease;
}
.char.transformed {
  opacity: 0;
  transform: scale(0.8);
}
.char.converted {
  color: #1e90ff;
  font-weight: bold;
  transform: scale(1.2);
}

/* === キャッチコピー === */
.catchcopy {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 20;
  opacity: 0;
  transition: opacity 0.6s ease;
  text-align: center;
  min-width: clamp(720px, 90vw, 100vw);
}

@media (min-width: 1024px) {
  .catchcopy {
    position: flex;
    top: 40%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 20;
    opacity: 0;
    transition: opacity 0.6s ease;
    text-align: center;
    min-width: clamp(720px, 90vw, 100vw);
  }
}

.catchcopy.visible {
  opacity: 1;
}

.catchcopy-inner {
  display: inline-block;
  max-width: 80vw;
  padding: 0.8em 1.2em;
  color: white;
  font-size: 1.4rem;
  font-weight: 700;
  line-height: 1.5;
  background: rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(4px);
  border-radius: 8px;
  word-break: keep-word;
  text-align: center;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

/* === 固定CTAボタン群（画面下部固定） === */
.cta-fixed {
  position: fixed;
  bottom: 2vh;
  right: 2vw;
  left: auto;
  transform: none;
  display: flex;
  gap: 1rem;
  z-index: 29;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.5s ease;
}

@media (min-width: 1024px) {
  .cta-fixed {
    position: fixed;
    bottom: 2vh;
    left: 55vw;
  }
}

.cta-fixed.visible {
  opacity: 1;
  pointer-events: auto;
}
.cta-fixed.hidden {
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.4s ease;
}

.cta-fixed .cta-btn {
  font-size: 0.85rem;
  padding: 0.4em 1em;
  border-radius: 6px;
  line-height: 1.2;
}

.cta-btn.main:hover {
  background: #ffffff;
  color: #0078d7;
  border: 1px solid #0078d7;
}

footer.hidden {
  display: none;
}