@charset "UTF-8";
/* ==============================================================================================
   First View - UBSC-style: Left text + Right skewed image slider
   ============================================================================================== */

/* --- Container --- */
.fv {
  position: relative;
  width: 100%;
  height: 90vh;
  overflow: hidden;
  background-color: var(--color-bg);
  z-index: 1;
}


/* --- Left: Text Area (above everything) --- */
.fv-text {
  position: absolute;
  top: 7%;
  left: 0;
  z-index: 30;
  width: 45%;
  height: 100%;
  display: flex;
  align-items: center;
  background: transparent;
}

.fv-text__inner {
  padding-left: 8%;
}

.fv-text__en,
.fv-text__en .fv-text__line {
  /* dark-theme.css の「h1〜h6 を UD新ゴ」!important ルールに勝たせて
     ヒーロー英字を Outfit で出す（moon-x と同じ）。 */
  font-family: var(--font-en), var(--font-jp) !important;
}
.fv-text__en {
  font-size: clamp(36px, 4.3vw, 65px);
  font-weight: 400;
  line-height: 1.4;
  letter-spacing: 0.06em;
  color: var(--color-text-heading);
  margin: 0;
}

.fv-text__line {
  display: block;
  position: relative;
  overflow: hidden;
  color: transparent;
}

.fv-text__line::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 0;
  height: 1.1em;
  background: var(--color-text-heading);
}

/* Line 1: color changes at mask 50% point (0.25s) */
.fv.is-loaded .fv-text__line:nth-child(1) {
  color: var(--color-text-heading);
  transition: color 0s 0.25s;
}
.fv.is-loaded .fv-text__line:nth-child(1)::after {
  animation: maskReveal 0.5s cubic-bezier(0.9, 0, 0.1, 1) forwards;
}

/* Line 2: 0.15s delay, color changes at 0.15 + 0.25 = 0.4s */
.fv.is-loaded .fv-text__line:nth-child(2) {
  color: var(--color-text-heading);
  transition: color 0s 0.4s;
}
.fv.is-loaded .fv-text__line:nth-child(2)::after {
  animation: maskReveal 0.5s 0.15s cubic-bezier(0.9, 0, 0.1, 1) forwards;
}

@keyframes maskReveal {
  0% {
    left: 0;
    width: 0;
  }
  50% {
    left: 0;
    width: 100%;
  }
  100% {
    left: 100%;
    width: 0;
  }
}

.fv-text__ja {
  font-family: var(--font-jp-medium);
  font-size: clamp(16px, 1.8vw, 26px);
  letter-spacing: 0.08em;
  line-height: 1.4;
  color: var(--color-text-heading);
  margin-top: 2vw;
}

.fv-text__ja-mask {
  display: inline-block;
  position: relative;
  overflow: hidden;
  color: var(--color-bg);
}

.fv-text__ja-mask::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 0;
  height: 100%;
  background: var(--color-bg);
}

.fv.is-loaded .fv-text__ja-mask {
  color: var(--color-text-heading);
  transition: color 0s 0.4s; /* delay matches mask 50% point */
}

.fv.is-loaded .fv-text__ja-mask::after {
  animation: maskRevealJa 0.5s 0.15s cubic-bezier(0.9, 0, 0.1, 1) forwards;
}

@keyframes maskRevealJa {
  0% {
    left: 0;
    width: 0;
  }
  50% {
    left: 0;
    width: 100%;
  }
  100% {
    left: 100%;
    width: 0;
  }
}

.fv-text__lead {
  font-family: var(--font-jp-medium);
  font-size: 15px;
  line-height: 2;
  letter-spacing: 0.15em;
  color: var(--color-text-muted);
  opacity: 0;
  transition: opacity 0.6s ease;
  margin-top: 1.5vw;
}

.fv-text__btn {
  margin-top: 2.5vw;
}

.fv-text__btn a {
  display: inline-flex;
  align-items: center;
  gap: 1rem;
  font-family: var(--font-jp-medium);
  font-size: clamp(13px, 1vw, 16px);
  color: var(--color-text-heading);
  text-decoration: none;
  letter-spacing: 0.1em;
  padding: 1.2rem 2.5rem;
  border: 1px solid var(--color-rule);
  border-radius: 0;
  transition: all 0.4s ease;
}

.fv-text__btn a:hover {
  border-color: var(--color-text-heading);
  color: var(--color-text-heading);
}

/* --- Right: Skewed Background Image --- */
.fv-visual {
  position: absolute;
  top: 0;
  right: 0;
  width: 65%;
  height: 100%;
  transform-origin: 100% 0;
  transform: matrix(1, 0, -0.42, 1, 0, 0);
  z-index: 3;
  flex-shrink: 0;
  overflow: hidden;
}

.fv-visual__bg {
  position: relative;
  width: 100%;
  height: 100%;
  overflow: hidden;
}

.fv-visual__bg-img {
  position: absolute;
  width: 100%;
  height: 100%;
  background: transparent;
  transform-origin: 100% 0;
  transform: matrix(1, 0, 0.42, 1, 0, 0);
}

/* --- Slider (overlaps right area) --- */
/* Slider: above black bg, below text */
/* Slider: fixed skewed mask, track slides inside */
.fv-slider {
  position: absolute;
  top: 0;
  right: -380px;
  width: 65%;
  height: 100%;
  z-index: 10;
  overflow: hidden;
  transform: matrix(1, 0, -0.42, 1, 0, 0);
  transform-origin: 100% 0;
  opacity: 1;
  flex-shrink: 0;
}

/* Track: horizontal strip of slides, moves left */
.fv-slider__mask {
  position: relative;
  width: 100%;
  height: 100%;
  overflow: hidden;
}

/* Overlay on right half (always covers the rightmost visible image) */
.fv-slider__mask::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 45%;
  height: 100%;
  background: rgba(244, 244, 244, 0.4);
  z-index: 2;
  pointer-events: none;
}

.fv-slider__track {
  display: flex;
  width: 250%;
  height: 100%;
  transition: transform 1s cubic-bezier(0.77, 0, 0.175, 1);
}

/* Each slide = 20% of track = 50% of visible mask = 2 visible */
.fv-slider__slide {
  width: 22%;
  height: 100%;
  flex-shrink: 0;
  overflow: hidden;
  position: relative;
}

.fv-slider__slide picture {
  display: block;
  width: 100%;
  height: 100%;
}

.fv-slider__slide img {
  position: absolute;
  top: 0;
  left: 50%;
  width: 200%;
  height: 100%;
  object-fit: cover;
  object-position: center 10%;
  transform: matrix(1, 0, 0.42, 1, 0, 0) translateX(-50%);
}


.fv.is-loaded .fv-text__lead {
  opacity: 1;
  transition-delay: 0.9s;
}

.sp-only {
  display: none;
}
@media screen and (max-width: 768px) {
  .sp-only {
    display: inline;
  }
}

/* --- FV Buttons --- */
.fv-text__buttons {
  display: flex;
  gap: 1.5rem;
  margin-top: 2.5vw;
  opacity: 0;
  transition: opacity 0.6s ease;
}

.fv.is-loaded .fv-text__buttons {
  opacity: 1;
  transition-delay: 0.9s;
}

/* moon-x.com「Mission / Valueについて」ボタンのデザイン・アニメーションを完全移植。
   ピル型・黒枠・透明背景（黒ベタ塗りにしない）。ホバーで:
     ① 全体が上に浮く  ② 矢印が右上へ飛ぶ  ③ テキストが上へロールして入れ替わる
   タイミングは実測: 350ms / cubic-bezier(0.445,0.05,0.55,0.95) */
.fv-btn {
  --btn-ease: cubic-bezier(0.445, 0.05, 0.55, 0.95);
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.2em;
  min-width: 22rem;
  font-family: var(--font-jp-medium);
  font-size: clamp(12px, 1vw, 15px);
  letter-spacing: 0.1em;
  padding: 1.4rem 2rem 1.4rem 2.5rem;
  text-decoration: none;
  border-radius: 1000px;                 /* ピル型 */
  background: transparent;               /* 黒ベタ塗りにしない */
  color: var(--color-text-heading);
  border: 1px solid var(--color-text-heading);
  transition: translate 350ms var(--btn-ease);
  box-sizing: border-box;
}

/* ① 全体が上に浮く */
.fv-btn:hover {
  translate: 0 -3px;
}

/* ③ テキストロール: overflow:hidden の窓の中で、同じテキストを2枚縦に積み、
   ホバーで1行分だけ上へ送って下の複製へ入れ替える（moon-x と同じ仕組み）。 */
.fv-btn__roll {
  display: inline-block;
  overflow: hidden;
  height: 1.3em;
  line-height: 1.3;
  vertical-align: bottom;
}
.fv-btn__roll-in {
  display: flex;
  flex-direction: column;
  transition: translate 350ms var(--btn-ease);
}
.fv-btn__roll-in > span {
  display: block;
  height: 1.3em;
  line-height: 1.3;
}
.fv-btn:hover .fv-btn__roll-in {
  translate: 0 -1.3em;
}

/* ② 矢印もテキストと同じロール: overflow:hidden の窓の中で矢印を2枚縦に積み、
   ホバーで1枚分だけ上へ送って下の複製に入れ替える（テキストロールと同一挙動）。 */
.fv-btn__arrow {
  display: inline-block;
  overflow: hidden;
  /* font-size をここで確定させ、窓・セル・移動量をすべて同じem基準に揃える。
     旧: <i> 側に font-size:0.9em があり、セル高(0.9em基準)と移動量(親基準)が
     食い違って矢印がホバーで上へずれていた。 */
  font-size: 0.9em;
  height: 1.3em;
  line-height: 1.3;
}
.fv-btn__arrow-in {
  display: flex;
  flex-direction: column;
  transition: translate 350ms var(--btn-ease);
}
.fv-btn__arrow-in > i {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 1.3em;
}
.fv-btn:hover .fv-btn__arrow-in {
  translate: 0 -1.3em;
}

/* primary / secondary とも同一の透明ピル（moon-x のボタンは1種類） */
.fv-btn--primary,
.fv-btn--secondary {
  background: transparent;
  color: var(--color-text-heading);
  border: 1px solid var(--color-text-heading);
}

@media screen and (max-width: 768px) {
  .fv-text__buttons {
    flex-direction: column;
    gap: 1rem;
    margin-top: 20vw;
  }
  .fv-btn {
    text-align: center;
  }
}

/* --- Scroll indicator --- */
.fv-scroll {
  position: absolute;
  bottom: 3rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 30;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  text-decoration: none;
  color: var(--color-text-muted);
}

.fv-scroll__text {
  font-family: var(--font-en);
  font-size: 11px;
  letter-spacing: 0.15em;
  writing-mode: vertical-rl;
  text-orientation: mixed;
}

.fv-scroll__line {
  display: block;
  width: 1px;
  height: 50px;
  background: linear-gradient(to bottom, var(--color-rule-strong), transparent);
  animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
  0%, 100% { opacity: 0.4; transform: scaleY(1); }
  50% { opacity: 1; transform: scaleY(1.2); }
}

/* ==============================================================================================
   Responsive
   ============================================================================================== */

@media screen and (max-width: 1024px) {
  .fv-text {
    width: 50%;
  }
  .fv-visual {
    width: 70%;
  }
  .fv-slider {
    width: 65%;
  }
}

@media screen and (max-width: 768px) {
  .fv {
    height: 90vh;
    min-height: auto;
  }

  .fv-text {
    position: absolute;
    top: 3%;
    width: 100%;
    z-index: 30;
    padding: 65px 5% 40px;
    align-items: flex-start;
  }

  .fv-text__inner {
    padding-left: 0;
  }

  .fv-text__en {
    font-size: 12vw;
  }

  .fv-text__ja {
    font-size: 6vw;
    margin-top: 4vw;
    line-height: 1.4;
    letter-spacing: 0.15em;
  }

  .fv-text__lead {
    font-size: 2.8vw;
    margin-top: 3vw;
  }

  .fv-text__btn {
    margin-top: 5vw;
  }

  .fv-btn {
    font-size: 3.5vw;
  }

  /* Hide skewed visual on mobile (full bg is already behind via .fv::before) */
  .fv-visual {
    display: none;
  }

  /* SP: same skew as PC, but 1 slide visible, wider area */
  .fv-slider {
    width: 90%;
    right: -320px;
    opacity: 0.26;
  }

  .fv-slider__track {
    width: 500%;
  }

  .fv-slider__slide {
    width: 20%;
  }

  .fv-slider__mask::after {
    display: none;
  }

  .fv-scroll {
    bottom: 2rem;
  }
}

@media screen and (max-width: 414px) {
  .fv-text {
    padding: 100px 15px 30px;
  }

  .fv-text__en {
    font-size: 12vw;
  }

  .fv-text__ja {
    font-size: 6vw;
  }

  .fv-text__lead {
    font-size: 3.2vw;
  }
}