/* ==========================================================================
   Seiryu-Theme — Motion & Scroll Animation
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. data-motion 初期状態
   -------------------------------------------------------------------------- */
[data-motion] {
  opacity: 0;
  transition-property: opacity, transform;
  transition-duration: var(--motion-duration, 0.7s);
  transition-timing-function: var(--seiryu-easing-out);
  transition-delay: var(--motion-delay, 0s);
}

[data-motion="fade-up"]    { transform: translateY(40px); }
[data-motion="fade-down"]  { transform: translateY(-40px); }
[data-motion="fade-left"]  { transform: translateX(40px); }
[data-motion="fade-right"] { transform: translateX(-40px); }
[data-motion="fade-in"]    { transform: none; }
[data-motion="zoom-in"]    { transform: scale(0.85); }
[data-motion="zoom-out"]   { transform: scale(1.15); }
[data-motion="flip-left"]  { transform: perspective(600px) rotateY(-30deg); }
[data-motion="flip-right"] { transform: perspective(600px) rotateY(30deg); }
[data-motion="slide-up"]   { transform: translateY(60px); }

/* --------------------------------------------------------------------------
   2. is-visible 状態（アニメーション完了）
   -------------------------------------------------------------------------- */
[data-motion].is-visible {
  opacity: 1;
  transform: none;
}

/* --------------------------------------------------------------------------
   background-attachment: fixed 競合防止
   has-parallax を持つカバーブロックに transform が掛かると fixed が無効になるため、
   自身にモーションが付いている場合は transform をリセットして opacity のみアニメーション
   -------------------------------------------------------------------------- */
.wp-block-cover.has-parallax[data-motion],
.wp-block-cover.has-parallax[class*="seiryu-motion-"] {
  transform: none !important;
  transition-property: opacity;
}

/* --------------------------------------------------------------------------
   3. Speed variants (JS で body クラスから適用)
   -------------------------------------------------------------------------- */
body.motion-speed-slow [data-motion] {
  --motion-duration: 1.0s;
}

body.motion-speed-fast [data-motion] {
  --motion-duration: 0.4s;
}

/* --------------------------------------------------------------------------
   4. prefers-reduced-motion
   -------------------------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  [data-motion] {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }
}

/* --------------------------------------------------------------------------
   5. クラスベース モーション（ブロックエディター用）
   --------------------------------------------------------------------------
   data-motion 属性と同等の効果を CSS クラスで提供します。
   ブロックエディターの「Seiryu モーション」パネルから設定します。
   -------------------------------------------------------------------------- */

[class*="seiryu-motion-"] {
  opacity: 0;
  transition-property: opacity, transform;
  transition-duration: var(--motion-duration, 0.7s);
  transition-timing-function: var(--seiryu-easing-out);
  transition-delay: var(--motion-delay, 0s);
}

.seiryu-motion-fade-up    { transform: translateY(40px); }
.seiryu-motion-fade-down  { transform: translateY(-40px); }
.seiryu-motion-fade-left  { transform: translateX(40px); }
.seiryu-motion-fade-right { transform: translateX(-40px); }
.seiryu-motion-fade-in    { transform: none; }
.seiryu-motion-zoom-in    { transform: scale(0.85); }
.seiryu-motion-zoom-out   { transform: scale(1.15); }
.seiryu-motion-flip-left  { transform: perspective(600px) rotateY(-30deg); }
.seiryu-motion-flip-right { transform: perspective(600px) rotateY(30deg); }
.seiryu-motion-slide-up   { transform: translateY(60px); }

[class*="seiryu-motion-"].is-visible {
  opacity: 1;
  transform: none;
}

/* 遅延クラス */
.seiryu-delay-0   { --motion-delay: 0ms; }
.seiryu-delay-100 { --motion-delay: 100ms; }
.seiryu-delay-200 { --motion-delay: 200ms; }
.seiryu-delay-300 { --motion-delay: 300ms; }
.seiryu-delay-400 { --motion-delay: 400ms; }
.seiryu-delay-500 { --motion-delay: 500ms; }

/* 速度クラス */
body.motion-speed-slow [class*="seiryu-motion-"] { --motion-duration: 1.0s; }
body.motion-speed-fast [class*="seiryu-motion-"] { --motion-duration: 0.4s; }

@media (prefers-reduced-motion: reduce) {
  [class*="seiryu-motion-"] {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }
}

/* --------------------------------------------------------------------------
   6. Counter Animation
   -------------------------------------------------------------------------- */
[data-counter] {
  display: inline-block;
  font-variant-numeric: tabular-nums;
}

/* --------------------------------------------------------------------------
   6. Scroll-to-top Button
   -------------------------------------------------------------------------- */
.seiryu-scroll-top {
  position: fixed;
  bottom: var(--seiryu-space-8);
  right: var(--seiryu-space-8);
  z-index: 500;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  background-color: var(--seiryu-color-primary);
  color: var(--seiryu-color-text-inverse);
  border: none;
  border-radius: 50%;
  cursor: pointer;
  box-shadow: var(--seiryu-shadow-md);
  opacity: 0;
  transform: translateY(16px);
  transition:
    opacity var(--seiryu-duration-base) var(--seiryu-easing-default),
    transform var(--seiryu-duration-base) var(--seiryu-easing-default),
    background-color var(--seiryu-duration-fast) var(--seiryu-easing-default);
}

.seiryu-scroll-top:not([hidden]) {
  opacity: 1;
  transform: translateY(0);
}

.seiryu-scroll-top[hidden] {
  display: flex;
  opacity: 0;
  transform: translateY(16px);
  pointer-events: none;
}

.seiryu-scroll-top:hover {
  background-color: var(--seiryu-color-primary-light);
}

@media (max-width: 767px) {
  .seiryu-scroll-top {
    bottom: var(--seiryu-space-4);
    right: var(--seiryu-space-4);
    width: 40px;
    height: 40px;
  }
}

/* --------------------------------------------------------------------------
   7. Wave Divider
   -------------------------------------------------------------------------- */
.seiryu-wave-divider {
  position: absolute;
  left: 0;
  right: 0;
  line-height: 0;
  z-index: 2;
}

.seiryu-wave-divider--top    { top: 0; }
.seiryu-wave-divider--bottom { bottom: 0; }

.seiryu-wave-divider svg {
  width: 100%;
  height: auto;
  max-height: 80px;
}

/* --------------------------------------------------------------------------
   8. Video Modal
   -------------------------------------------------------------------------- */
.seiryu-video-trigger {
  position: relative;
  display: inline-block;
  cursor: pointer;
  border: none;
  padding: 0;
  background: transparent;
  border-radius: var(--seiryu-radius-md);
  overflow: hidden;
}

.seiryu-video-trigger img {
  width: 100%;
  display: block;
  transition: transform var(--seiryu-duration-slow) var(--seiryu-easing-default);
}

.seiryu-video-trigger:hover img {
  transform: scale(1.04);
}

.video-play-icon {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0,0,0,0.3);
  transition: background var(--seiryu-duration-fast) var(--seiryu-easing-default);
}

.video-play-icon::before {
  content: '';
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: rgba(255,255,255,0.9);
  display: flex;
  align-items: center;
  justify-content: center;
  clip-path: polygon(35% 25%, 35% 75%, 75% 50%);
  transition: transform var(--seiryu-duration-fast) var(--seiryu-easing-spring);
}

.seiryu-video-trigger:hover .video-play-icon { background: rgba(0,0,0,0.4); }
.seiryu-video-trigger:hover .video-play-icon::before { transform: scale(1.1); }

.seiryu-video-modal {
  position: fixed;
  inset: 0;
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--seiryu-space-6);
}

.seiryu-video-modal[hidden] {
  display: none;
}

.video-modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.9);
  cursor: pointer;
}

.video-modal-content {
  position: relative;
  width: 100%;
  max-width: 960px;
  z-index: 1;
}

.video-modal-close {
  position: absolute;
  top: -48px;
  right: 0;
  width: 40px;
  height: 40px;
  background: transparent;
  border: 1px solid rgba(255,255,255,0.5);
  border-radius: 50%;
  color: #fff;
  font-size: 1.25rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}

.video-modal-close:hover {
  background: rgba(255,255,255,0.1);
}

.video-modal-embed {
  position: relative;
  padding-top: 56.25%;
  background: #000;
  border-radius: var(--seiryu-radius-md);
  overflow: hidden;
}

.video-modal-embed iframe,
.video-modal-embed video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}