/* ========================================
   モノクロ。FV - SWELL用カスタムCSS
   設置場所: 外観 > カスタマイズ > 追加CSS
   または 子テーマの style.css
======================================== */

:root {
  --mono-black: #0a0a0a;
  --mono-white: #FFFFFF;
  --mono-gray: #9CA3AF;
  --mono-accent: #6B7280;
  --mono-side-padding: 120px;
}

/* ========================================
   SWELLデフォルトのヘッダーを非表示（トップページのみ）
   ※ 必要に応じて調整
======================================== */
.home .l-header {
  /* display: none; */
}

/* ========================================
   FVセクション全体
======================================== */
.monokuro-fv {
  position: relative;
  width: 100%;
  height: 100vh;
  background: var(--mono-black);
  overflow: hidden;
  padding: 0 var(--mono-side-padding);
}

/* ========================================
   ローディング画面
======================================== */
.monokuro-loading {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  background: var(--mono-black);
  z-index: 99999;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
}

.monokuro-loading__logo {
  font-family: 'Noto Sans JP', sans-serif;
  font-size: clamp(1.6rem, 4vw, 2.5rem);
  font-weight: 400;
  letter-spacing: 0.25em;
  color: var(--mono-white);
  opacity: 0;
  transform: translateY(20px);
}

.monokuro-loading__logo-img {
  max-width: 180px;
  height: auto;
  opacity: 0;
  transform: translateY(20px);
}

.monokuro-loading__bar-wrap {
  width: 100px;
  height: 1px;
  background: rgba(255,255,255,0.12);
  margin-top: 30px;
  overflow: hidden;
}

.monokuro-loading__bar {
  width: 0%;
  height: 100%;
  background: var(--mono-white);
}

.monokuro-loading__percent {
  font-family: 'Montserrat', sans-serif;
  font-size: 10px;
  font-weight: 200;
  letter-spacing: 0.3em;
  color: var(--mono-gray);
  margin-top: 15px;
  opacity: 0;
}

/* ========================================
   カスタムヘッダー（FV内）
======================================== */
.monokuro-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  padding: 30px var(--mono-side-padding);
  display: flex;
  justify-content: space-between;
  align-items: center;
  z-index: 1000;
}

.monokuro-header__logo {
  font-family: 'Noto Sans JP', sans-serif;
  font-size: 1rem;
  font-weight: 400;
  letter-spacing: 0.15em;
  color: var(--mono-white);
  opacity: 0;
}

.monokuro-header__logo-img {
  height: 26px;
  width: auto;
  opacity: 0;
}

.monokuro-header__nav {
  display: flex;
  gap: 40px;
}

.monokuro-header__nav a {
  font-family: 'Montserrat', sans-serif;
  font-size: 10px;
  font-weight: 400;
  letter-spacing: 0.1em;
  color: var(--mono-white);
  text-decoration: none;
  opacity: 0;
  position: relative;
  padding-bottom: 4px;
}

.monokuro-header__nav a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 1px;
  background: var(--mono-white);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.monokuro-header__nav a:hover::after {
  transform: scaleX(1);
  transform-origin: left;
}

.monokuro-header__menu-toggle {
  display: none;
  width: 26px;
  height: 16px;
  flex-direction: column;
  justify-content: space-between;
  cursor: pointer;
  opacity: 0;
  background: none;
  border: none;
}

.monokuro-header__menu-toggle span {
  width: 100%;
  height: 1px;
  background: var(--mono-white);
}

/* ========================================
   背景レイヤー群
======================================== */

/* Layer 1: グラデーション */
.monokuro-bg-gradient {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: 
    radial-gradient(ellipse 80% 50% at 20% 30%, rgba(30, 35, 50, 0.4) 0%, transparent 50%),
    radial-gradient(ellipse 60% 40% at 80% 70%, rgba(25, 30, 45, 0.5) 0%, transparent 50%),
    radial-gradient(ellipse 100% 80% at 50% 100%, rgba(20, 25, 40, 0.3) 0%, transparent 40%);
  opacity: 0;
}

/* Layer 2: ノイズ */
.monokuro-bg-noise {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 512 512' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
  pointer-events: none;
}

/* Layer 3: グリッド（全画面） */
.monokuro-bg-grid {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: 
    linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 80px 80px;
  opacity: 0;
}

/* Layer 4: 大きな装飾円 */
.monokuro-bg-circle {
  position: absolute;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.04);
  opacity: 0;
}

.monokuro-bg-circle--1 {
  width: 800px;
  height: 800px;
  top: -300px;
  left: -200px;
  animation: monokuroFloat 30s ease-in-out infinite;
}

.monokuro-bg-circle--2 {
  width: 600px;
  height: 600px;
  bottom: -200px;
  right: -150px;
  animation: monokuroFloat 25s ease-in-out infinite reverse;
}

.monokuro-bg-circle--3 {
  width: 400px;
  height: 400px;
  top: 20%;
  right: 10%;
  border-color: rgba(255,255,255,0.02);
  animation: monokuroFloat 20s ease-in-out infinite;
  animation-delay: -5s;
}

@keyframes monokuroFloat {
  0%, 100% { transform: translate(0, 0) rotate(0deg); }
  25% { transform: translate(20px, -15px) rotate(2deg); }
  50% { transform: translate(0, 10px) rotate(0deg); }
  75% { transform: translate(-15px, -5px) rotate(-2deg); }
}

/* Layer 5: 縦横ライン */
.monokuro-bg-lines {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  pointer-events: none;
}

.monokuro-bg-line-v {
  position: absolute;
  width: 1px;
  height: 100%;
  top: 0;
  background: linear-gradient(
    to bottom,
    transparent 0%,
    rgba(255,255,255,0.06) 20%,
    rgba(255,255,255,0.06) 80%,
    transparent 100%
  );
}

.monokuro-bg-line-v:nth-child(1) { left: 25%; }
.monokuro-bg-line-v:nth-child(2) { left: 50%; }
.monokuro-bg-line-v:nth-child(3) { left: 75%; }

.monokuro-bg-line-h {
  position: absolute;
  width: 100%;
  height: 1px;
  left: 0;
  background: linear-gradient(
    to right,
    transparent 0%,
    rgba(255,255,255,0.04) 20%,
    rgba(255,255,255,0.04) 80%,
    transparent 100%
  );
}

.monokuro-bg-line-h:nth-child(4) { top: 33%; }
.monokuro-bg-line-h:nth-child(5) { top: 66%; }

/* Layer 6: パーティクル */
.monokuro-bg-particles {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  pointer-events: none;
}

.monokuro-bg-particle {
  position: absolute;
  background: rgba(255,255,255,0.4);
  border-radius: 50%;
}

/* Layer 7: 光のアクセント */
.monokuro-bg-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0;
  pointer-events: none;
}

.monokuro-bg-glow--1 {
  width: 400px;
  height: 400px;
  top: 10%;
  left: 5%;
  background: rgba(60, 70, 100, 0.15);
  animation: monokuroGlow 8s ease-in-out infinite;
}

.monokuro-bg-glow--2 {
  width: 300px;
  height: 300px;
  bottom: 20%;
  right: 15%;
  background: rgba(50, 60, 90, 0.12);
  animation: monokuroGlow 10s ease-in-out infinite;
  animation-delay: -3s;
}

@keyframes monokuroGlow {
  0%, 100% { opacity: 0.5; transform: scale(1); }
  50% { opacity: 0.8; transform: scale(1.1); }
}

/* Layer 8: 動くライン */
.monokuro-bg-moving-lines {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  pointer-events: none;
  overflow: hidden;
}

.monokuro-moving-line {
  position: absolute;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.08), transparent);
  height: 1px;
  width: 200px;
}

.monokuro-moving-line--1 {
  top: 25%;
  animation: monokuroMoveLine 12s linear infinite;
}

.monokuro-moving-line--2 {
  top: 55%;
  animation: monokuroMoveLine 15s linear infinite;
  animation-delay: -5s;
}

.monokuro-moving-line--3 {
  top: 80%;
  animation: monokuroMoveLine 10s linear infinite;
  animation-delay: -8s;
}

@keyframes monokuroMoveLine {
  0% { left: -200px; opacity: 0; }
  10% { opacity: 1; }
  90% { opacity: 1; }
  100% { left: 100%; opacity: 0; }
}

/* ========================================
   Split Layout 2:1
======================================== */
.monokuro-fv__split {
  position: relative;
  display: flex;
  width: 100%;
  height: 100%;
  align-items: center;
  z-index: 10;
}

/* 左側：テキスト（2/3） */
.monokuro-fv__left {
  flex: 2;
  padding-right: 80px;
}

.monokuro-fv__content {
  max-width: 600px;
}

.monokuro-fv__main {
  font-family: 'Noto Sans JP', sans-serif;
  font-size: clamp(2rem, 3.5vw, 3.2rem);
  font-weight: 500;
  letter-spacing: 0.08em;
  line-height: 1.6;
  color: var(--mono-white);
  margin: 0;
}

.monokuro-fv__main .line {
  display: block;
  overflow: hidden;
  margin: 8px 0;
}

.monokuro-fv__main .line-inner {
  display: block;
  transform: translateY(110%);
}

.monokuro-fv__sub {
  font-family: 'Noto Sans JP', sans-serif;
  font-size: clamp(0.8rem, 1.1vw, 0.95rem);
  font-weight: 300;
  letter-spacing: 0.18em;
  color: var(--mono-gray);
  margin-top: 28px;
  opacity: 0;
  transform: translateY(15px);
}

.monokuro-fv__cta {
  margin-top: 45px;
  opacity: 0;
  transform: translateY(20px);
}

.monokuro-cta-link {
  display: inline-flex;
  align-items: center;
  gap: 15px;
  font-family: 'Montserrat', sans-serif;
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 0.15em;
  color: var(--mono-white);
  text-decoration: none;
  padding: 12px 0;
  position: relative;
}

.monokuro-cta-link::after {
  content: '';
  position: absolute;
  bottom: 8px;
  left: 0;
  width: calc(100% - 50px);
  height: 1px;
  background: rgba(255,255,255,0.25);
}

.monokuro-cta-arrow {
  width: 35px;
  height: 1px;
  background: var(--mono-white);
  position: relative;
  transition: width 0.3s;
}

.monokuro-cta-arrow::after {
  content: '';
  position: absolute;
  right: 0;
  top: -4px;
  width: 9px;
  height: 9px;
  border-right: 1px solid var(--mono-white);
  border-top: 1px solid var(--mono-white);
  transform: rotate(45deg);
}

.monokuro-cta-link:hover .monokuro-cta-arrow {
  width: 50px;
}

/* 右側：グラフィック（1/3） */
.monokuro-fv__right {
  flex: 1;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

/* ========================================
   Main Graphic
======================================== */
.monokuro-graphic {
  position: relative;
  width: 320px;
  height: 320px;
  opacity: 0;
}

/* 回転する円 */
.monokuro-orbit {
  position: absolute;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.12);
}

.monokuro-orbit--1 {
  width: 100%;
  height: 100%;
  top: 0;
  left: 0;
  animation: monokuroOrbit 35s linear infinite;
}

.monokuro-orbit--2 {
  width: 70%;
  height: 70%;
  top: 15%;
  left: 15%;
  animation: monokuroOrbit 28s linear infinite reverse;
}

.monokuro-orbit--3 {
  width: 40%;
  height: 40%;
  top: 30%;
  left: 30%;
  animation: monokuroOrbit 20s linear infinite;
}

@keyframes monokuroOrbit {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* 軌道上のドット */
.monokuro-orbit__dot {
  position: absolute;
  width: 6px;
  height: 6px;
  background: var(--mono-white);
  border-radius: 50%;
  box-shadow: 0 0 15px rgba(255,255,255,0.6), 0 0 30px rgba(255,255,255,0.3);
}

.monokuro-orbit--1 .monokuro-orbit__dot { top: -3px; left: 50%; transform: translateX(-50%); }
.monokuro-orbit--2 .monokuro-orbit__dot { top: 50%; right: -3px; transform: translateY(-50%); }
.monokuro-orbit--3 .monokuro-orbit__dot { bottom: -3px; left: 50%; transform: translateX(-50%); }

/* グリッドライン */
.monokuro-graphic__grid {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

.monokuro-graphic__grid-line {
  position: absolute;
  background: rgba(255,255,255,0.08);
}

.monokuro-graphic__grid-line--h {
  width: 100%;
  height: 1px;
  left: 0;
}

.monokuro-graphic__grid-line--v {
  width: 1px;
  height: 100%;
  top: 0;
}

.monokuro-graphic__grid-line--h1 { top: 33%; }
.monokuro-graphic__grid-line--h2 { top: 66%; }
.monokuro-graphic__grid-line--v1 { left: 33%; }
.monokuro-graphic__grid-line--v2 { left: 66%; }

/* 中心のシェイプ */
.monokuro-graphic__center {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 60px;
  height: 60px;
  border: 1px solid rgba(255,255,255,0.3);
  animation: monokuroCenterRotate 15s linear infinite;
}

.monokuro-graphic__center::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 30px;
  height: 30px;
  background: rgba(255,255,255,0.1);
  animation: monokuroCorePulse 3s ease-in-out infinite;
}

@keyframes monokuroCenterRotate {
  0% { transform: translate(-50%, -50%) rotate(0deg); }
  100% { transform: translate(-50%, -50%) rotate(360deg); }
}

@keyframes monokuroCorePulse {
  0%, 100% { transform: translate(-50%, -50%) scale(1); opacity: 0.8; }
  50% { transform: translate(-50%, -50%) scale(1.2); opacity: 1; }
}

/* 浮遊ドット */
.monokuro-graphic__dots {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

.monokuro-float-dot {
  position: absolute;
  background: rgba(255,255,255,0.4);
  border-radius: 50%;
}

/* 装飾ライン */
.monokuro-graphic__deco-line {
  position: absolute;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
}

.monokuro-graphic__deco-line--1 {
  width: 140px;
  top: 8%;
  right: -50px;
  transform: rotate(-25deg);
}

.monokuro-graphic__deco-line--2 {
  width: 120px;
  bottom: 12%;
  left: -40px;
  transform: rotate(20deg);
}

/* ========================================
   マーキー
======================================== */
.monokuro-marquee {
  position: absolute;
  bottom: 90px;
  left: 0;
  width: 100%;
  overflow: hidden;
  opacity: 0;
  z-index: 15;
}

.monokuro-marquee__track {
  display: flex;
  width: max-content;
  animation: monokuroMarquee 35s linear infinite;
}

.monokuro-marquee__item {
  font-family: 'Montserrat', sans-serif;
  font-size: 11px;
  font-weight: 300;
  letter-spacing: 0.3em;
  color: rgba(255,255,255,0.3);
  white-space: nowrap;
  padding: 0 25px;
  display: flex;
  align-items: center;
  gap: 25px;
}

.monokuro-marquee__item::after {
  content: '◇';
  font-size: 6px;
  opacity: 0.5;
}

@keyframes monokuroMarquee {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

/* ========================================
   スクロールインジケーター
======================================== */
.monokuro-scroll {
  position: absolute;
  bottom: 30px;
  left: var(--mono-side-padding);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  opacity: 0;
  z-index: 20;
}

.monokuro-scroll__text {
  font-family: 'Montserrat', sans-serif;
  font-size: 9px;
  font-weight: 300;
  letter-spacing: 0.2em;
  color: var(--mono-gray);
  writing-mode: vertical-rl;
}

.monokuro-scroll__line {
  width: 1px;
  height: 50px;
  background: rgba(255,255,255,0.15);
  position: relative;
  overflow: hidden;
}

.monokuro-scroll__line::after {
  content: '';
  position: absolute;
  top: -50px;
  left: 0;
  width: 1px;
  height: 50px;
  background: var(--mono-white);
  animation: monokuroScrollDown 1.8s ease-in-out infinite;
}

@keyframes monokuroScrollDown {
  0% { top: -50px; }
  100% { top: 50px; }
}

/* ========================================
   レスポンシブ
======================================== */
@media (max-width: 1024px) {
  .monokuro-fv {
    padding: 0 30px;
  }

  .monokuro-header {
    padding: 25px 30px;
  }

  .monokuro-header__nav {
    display: none;
  }

  .monokuro-header__menu-toggle {
    display: flex;
  }

  .monokuro-fv__split {
    flex-direction: column;
    justify-content: center;
  }

  .monokuro-fv__left {
    flex: none;
    padding-right: 0;
    text-align: center;
  }

  .monokuro-fv__content {
    max-width: 100%;
  }

  .monokuro-fv__main {
    font-size: clamp(1.8rem, 7vw, 2.5rem);
  }

  .monokuro-fv__right {
    display: none;
  }

  .monokuro-bg-circle--1 {
    width: 400px;
    height: 400px;
    top: -150px;
    left: -150px;
  }

  .monokuro-bg-circle--2 {
    width: 350px;
    height: 350px;
    bottom: -100px;
    right: -100px;
  }

  .monokuro-bg-circle--3 {
    display: none;
  }

  .monokuro-scroll {
    left: 50%;
    transform: translateX(-50%);
  }
}