/* ========================================
   Rich Animations - リッチUIアニメーション
   yui540スタイル インスパイア
   流体・弾性・多層アニメーション
   ======================================== */

/* ========== カスタムイージング ========== */
:root {
  --ease-spring: cubic-bezier(0.68, -0.55, 0.265, 1.55);
  --ease-spring-soft: cubic-bezier(0.34, 1.56, 0.64, 1);
  --ease-spring-out: cubic-bezier(0.175, 0.885, 0.32, 1.275);
  --ease-expo-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-circ-out: cubic-bezier(0, 0.55, 0.45, 1);
  --ease-back-out: cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* ========== ① カード登場アニメーション ========== */

@keyframes card-enter {
  0% {
    opacity: 0;
    transform: translateY(32px) scale(0.96);
    filter: blur(4px);
  }
  60% {
    opacity: 1;
    filter: blur(0);
  }
  100% {
    opacity: 1;
    transform: translateY(0) scale(1);
    filter: blur(0);
  }
}

@keyframes card-enter-left {
  0% {
    opacity: 0;
    transform: translateX(-24px) scale(0.97);
  }
  100% {
    opacity: 1;
    transform: translateX(0) scale(1);
  }
}

/* カードの初期状態 */
.diary-article {
  opacity: 0;
  animation: card-enter 0.6s var(--ease-expo-out) forwards;
}

/* スタガー遅延 */
.diary-article:nth-child(1)  { animation-delay: 0ms; }
.diary-article:nth-child(2)  { animation-delay: 60ms; }
.diary-article:nth-child(3)  { animation-delay: 120ms; }
.diary-article:nth-child(4)  { animation-delay: 180ms; }
.diary-article:nth-child(5)  { animation-delay: 240ms; }
.diary-article:nth-child(6)  { animation-delay: 300ms; }
.diary-article:nth-child(7)  { animation-delay: 360ms; }
.diary-article:nth-child(8)  { animation-delay: 420ms; }
.diary-article:nth-child(9)  { animation-delay: 480ms; }
.diary-article:nth-child(10) { animation-delay: 540ms; }
.diary-article:nth-child(n+11) { animation-delay: 600ms; }

/* ========== ② グラデーションボーダー（ホバー時） ========== */

@keyframes gradient-shift {
  0%   { background-position: 0% 50%; }
  50%  { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

@keyframes border-glow-pulse {
  0%, 100% { opacity: 0.6; }
  50%       { opacity: 1; }
}

@media (min-width: 768px) {
  .diary-article {
    position: relative;
    transition:
      box-shadow 0.4s var(--ease-expo-out),
      transform 0.3s var(--ease-spring-soft),
      border-color 0.3s ease;
  }

  .diary-article::before {
    content: '';
    position: absolute;
    inset: -1px;
    border-radius: calc(var(--radius-lg) + 1px);
    background: linear-gradient(
      135deg,
      var(--accent-100),
      var(--accent-200),
      rgba(113, 196, 239, 0.3),
      var(--accent-200)
    );
    background-size: 300% 300%;
    opacity: 0;
    transition: opacity 0.4s ease;
    z-index: -1;
    animation: gradient-shift 4s ease infinite;
    animation-play-state: paused;
    pointer-events: none;
  }

  .diary-article:hover::before {
    opacity: 0.5;
    animation-play-state: running;
  }

  .diary-article:hover {
    box-shadow:
      0 8px 32px rgba(0, 102, 140, 0.12),
      0 2px 8px rgba(0, 102, 140, 0.08);
    transform: translateY(-2px);
  }
}

/* ========== ③ タブ インジケーター 液体アニメーション ========== */

.diary-tabs .tab-btn {
  transition:
    color 0.3s var(--ease-expo-out),
    background 0.3s var(--ease-expo-out),
    transform 0.2s var(--ease-spring-soft);
}

.diary-tabs .tab-btn:active {
  transform: scale(0.94);
}

.diary-tabs .tab-btn i {
  transition: transform 0.4s var(--ease-spring);
}

.diary-tabs .tab-btn.active i {
  transform: scale(1.15) rotate(-3deg);
}

/* タブバッジのポップイン */
@keyframes badge-pop {
  0%   { transform: scale(0); opacity: 0; }
  70%  { transform: scale(1.25); }
  100% { transform: scale(1); opacity: 1; }
}

.tab-badge {
  animation: badge-pop 0.4s var(--ease-spring) both;
}

/* ========== ④ フィルターチップ アニメーション ========== */

@keyframes chip-enter {
  0% {
    opacity: 0;
    transform: scale(0.7) translateY(4px);
  }
  70% {
    transform: scale(1.05) translateY(-1px);
  }
  100% {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}

.filter-chip {
  animation: chip-enter 0.35s var(--ease-spring) both;
  transition: transform 0.2s var(--ease-spring-soft), box-shadow 0.2s ease;
}

.filter-chip:hover {
  transform: scale(1.05);
  box-shadow: 0 2px 8px rgba(0, 102, 140, 0.3);
}

/* ========== ⑤ フィルターパネル スプリング登場 ========== */

@keyframes filter-panel-spring-up {
  0% {
    transform: translateY(100%) scale(0.98);
    opacity: 0;
  }
  60% {
    transform: translateY(-6px) scale(1.005);
    opacity: 1;
  }
  80% {
    transform: translateY(3px) scale(0.999);
  }
  100% {
    transform: translateY(0) scale(1);
    opacity: 1;
  }
}

@keyframes filter-panel-spring-center {
  0% {
    transform: translate(-50%, -40%) scale(0.9);
    opacity: 0;
  }
  60% {
    transform: translate(-50%, -52%) scale(1.01);
    opacity: 1;
  }
  100% {
    transform: translate(-50%, -50%) scale(1);
    opacity: 1;
  }
}

.filter-panel.open {
  animation: filter-panel-spring-up 0.5s var(--ease-expo-out) both;
}

@media (min-width: 768px) {
  .filter-panel.open {
    animation: filter-panel-spring-center 0.45s var(--ease-spring-soft) both;
  }
}

/* ========== ⑥ ソートパネル アニメーション ========== */

@keyframes dropdown-enter {
  0% {
    opacity: 0;
    transform: scale(0.9) translateY(-8px);
    transform-origin: top right;
  }
  70% {
    transform: scale(1.01) translateY(1px);
    transform-origin: top right;
  }
  100% {
    opacity: 1;
    transform: scale(1) translateY(0);
    transform-origin: top right;
  }
}

.sort-panel.open {
  display: block;
  animation: dropdown-enter 0.3s var(--ease-spring-soft) both;
}

/* ソートオプションのスタガー */
.sort-option {
  transition:
    background-color 0.2s ease,
    color 0.2s ease,
    padding-left 0.2s var(--ease-expo-out);
}

.sort-option:hover {
  padding-left: 1.25rem;
  color: var(--accent-200);
  background-color: rgba(113, 196, 239, 0.08) !important;
}

.sort-option.active {
  padding-left: 1.25rem;
}

/* ========== ⑦ 検索インプット フォーカスアニメーション ========== */

@keyframes search-focus-glow {
  0%   { box-shadow: 0 0 0 0 rgba(0, 102, 140, 0); }
  50%  { box-shadow: 0 0 0 6px rgba(0, 102, 140, 0.12); }
  100% { box-shadow: 0 0 0 3px rgba(0, 102, 140, 0.1); }
}

.main-search-input:focus {
  animation: search-focus-glow 0.4s var(--ease-expo-out) both;
}

/* 検索インジケーター アニメーション */
@keyframes search-indicator-enter {
  0%  { opacity: 0; transform: translateY(-6px); }
  100%{ opacity: 1; transform: translateY(0); }
}

#search-indicator[style*="flex"],
#search-indicator:not([style*="none"]) {
  animation: search-indicator-enter 0.25s var(--ease-expo-out) both;
}

/* ========== ⑧ ステータスタブ スライディング ========== */

.status-tab {
  transition:
    background-color 0.3s var(--ease-expo-out),
    color 0.3s ease,
    box-shadow 0.3s ease,
    transform 0.2s var(--ease-spring-soft);
}

.status-tab:active {
  transform: scale(0.95);
}

.status-tab.active {
  animation: badge-pop 0.35s var(--ease-spring) both;
}

/* ========== ⑨ タグピル インタラクション ========== */

.tag-pill {
  transition:
    transform 0.25s var(--ease-spring-soft),
    background 0.25s ease,
    color 0.25s ease,
    box-shadow 0.25s ease,
    border-color 0.25s ease;
}

.tag-pill:hover {
  transform: translateY(-2px) scale(1.05);
  box-shadow: 0 4px 12px rgba(113, 196, 239, 0.4);
}

.tag-pill:active {
  transform: scale(0.93);
  transition-duration: 0.1s;
}

/* ========== ⑩ 利益バッジ アニメーション ========== */

@keyframes profit-appear {
  0% {
    opacity: 0;
    transform: scale(0.6) translateX(8px);
  }
  60% {
    transform: scale(1.08) translateX(-2px);
  }
  100% {
    opacity: 1;
    transform: scale(1) translateX(0);
  }
}

.diary-profit-pill {
  animation: profit-appear 0.5s var(--ease-spring) both;
  animation-delay: 0.2s;
}

/* ========== ⑪ ページヘッダー アニメーション ========== */

@keyframes header-slide-down {
  0% {
    opacity: 0;
    transform: translateY(-16px);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
  }
}

.page-header {
  animation: header-slide-down 0.5s var(--ease-expo-out) both;
}

.page-title {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

@keyframes icon-spin-in {
  0% {
    opacity: 0;
    transform: rotate(-30deg) scale(0.5);
  }
  60% {
    transform: rotate(8deg) scale(1.1);
  }
  100% {
    opacity: 1;
    transform: rotate(0) scale(1);
  }
}

.page-title i {
  animation: icon-spin-in 0.6s var(--ease-spring) both;
  animation-delay: 0.1s;
}

/* ========== ⑫ ビューディテールリンク ========== */

.view-detail {
  position: relative;
  overflow: hidden;
  transition:
    gap 0.3s var(--ease-spring-soft),
    color 0.2s ease;
}

.view-detail::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 0;
  height: 1.5px;
  background: var(--accent-200);
  transition: width 0.35s var(--ease-expo-out);
}

.view-detail:hover::after {
  width: 100%;
}

.view-detail i {
  transition: transform 0.3s var(--ease-spring);
}

.view-detail:hover i {
  transform: translateX(3px) translateY(-2px) rotate(10deg);
}

/* ========== ⑬ 「続きを読む」ボタン ========== */

.read-more--toggle {
  transition:
    background 0.25s ease,
    gap 0.3s var(--ease-spring-soft);
}

.read-more--toggle:hover {
  gap: 0.5rem;
}

.read-more__icon {
  transition: transform 0.4s var(--ease-spring) !important;
}

.read-more--toggle[aria-expanded="true"] .read-more__icon {
  transform: rotate(180deg) scale(1.1) !important;
}

/* ========== ⑭ スクロール検知 フェードイン ========== */

.reveal-on-scroll {
  opacity: 0;
  transform: translateY(20px);
  transition:
    opacity 0.6s var(--ease-expo-out),
    transform 0.6s var(--ease-expo-out);
}

.reveal-on-scroll.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ========== ⑮ ボタン マイクロインタラクション ========== */

.btn {
  position: relative;
  overflow: hidden;
  transition:
    transform 0.2s var(--ease-spring-soft),
    box-shadow 0.25s ease,
    background 0.25s ease !important;
}

.btn::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at center, rgba(255,255,255,0.3) 0%, transparent 70%);
  opacity: 0;
  transform: scale(0);
  transition:
    opacity 0.4s ease,
    transform 0.4s ease;
  pointer-events: none;
  border-radius: inherit;
}

.btn:active::after {
  opacity: 1;
  transform: scale(2);
  transition-duration: 0.1s;
}

.btn:active {
  transform: scale(0.96);
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(0, 102, 140, 0.35) !important;
}

/* ========== ⑯ フィルター通知トースト ========== */

@keyframes toast-spring-in {
  0% {
    opacity: 0;
    transform: translateX(120px) rotate(3deg);
  }
  60% {
    transform: translateX(-8px) rotate(-1deg);
  }
  100% {
    opacity: 1;
    transform: translateX(0) rotate(0);
  }
}

.filter-notification.show {
  animation: toast-spring-in 0.5s var(--ease-spring-soft) both !important;
  opacity: 1 !important;
  transform: translateX(0) !important;
}

/* ========== ⑰ ローディング エンハンスメント ========== */

@keyframes panel-loading-pulse {
  0%, 100% {
    opacity: 0.5;
    transform: scale(0.95);
  }
  50% {
    opacity: 1;
    transform: scale(1);
  }
}

.panel-loading {
  animation: panel-loading-pulse 1.5s ease-in-out infinite;
}

/* ========== ⑱ 開示インジケーター ========== */

@keyframes disclosure-badge-shine {
  0%   { background-position: -200% center; }
  100% { background-position: 200% center; }
}

.disclosure-indicator--new {
  background: linear-gradient(
    90deg,
    rgba(16, 185, 129, 0.15) 0%,
    rgba(16, 185, 129, 0.3) 50%,
    rgba(16, 185, 129, 0.15) 100%
  );
  background-size: 200% auto;
  animation: disclosure-badge-shine 2.5s linear infinite;
}

/* ========== ⑲ ダークモード トランジション ========== */

html {
  transition:
    background-color 0.4s ease,
    color 0.4s ease;
}

body,
.diary-article,
.mobile-search-container,
.filter-panel,
.status-tabs {
  transition:
    background-color 0.4s ease,
    border-color 0.4s ease,
    color 0.3s ease;
}

/* ========== ⑳ 検索コンテナ ホバー ========== */

.mobile-search-container {
  transition:
    box-shadow 0.3s ease,
    border-color 0.3s ease;
}

.mobile-search-container:focus-within {
  box-shadow:
    0 4px 20px rgba(0, 102, 140, 0.08),
    0 0 0 3px rgba(0, 102, 140, 0.06);
  border-color: rgba(0, 102, 140, 0.3);
}

/* ========== ㉑ View Transitions API ページ遷移 ========== */

@keyframes slide-out-to-left {
  to {
    opacity: 0;
    transform: translateX(-24px);
  }
}

@keyframes slide-in-from-right {
  from {
    opacity: 0;
    transform: translateX(24px);
  }
}

@supports (view-transition-name: none) {
  ::view-transition-old(root) {
    animation: 0.25s var(--ease-expo-out) both slide-out-to-left;
  }

  ::view-transition-new(root) {
    animation: 0.3s var(--ease-expo-out) both slide-in-from-right;
  }
}

/* ========== ㉒ フローティングアクションボタン ========== */

.speed-dial-btn,
.speed-dial-action {
  transition:
    transform 0.3s var(--ease-spring-soft),
    box-shadow 0.25s ease,
    background 0.25s ease !important;
}

.speed-dial-btn:hover {
  transform: scale(1.08) rotate(45deg) !important;
}

.speed-dial-action {
  transition-delay: calc(var(--i, 0) * 40ms) !important;
}

/* ========== ㉓ ボトムシート スプリング ========== */

.bottom-sheet-content {
  transition: transform 0.45s var(--ease-expo-out) !important;
}

/* ========== アクセシビリティ: モーション削減 ========== */

@media (prefers-reduced-motion: reduce) {
  .diary-article {
    animation: none !important;
    opacity: 1 !important;
    transform: none !important;
    filter: none !important;
  }

  .diary-article::before,
  .filter-chip,
  .tag-pill,
  .diary-profit-pill,
  .page-header,
  .page-title i,
  .tab-badge,
  .status-tab.active,
  .panel-loading,
  .disclosure-indicator--new {
    animation: none !important;
  }

  .diary-article:hover,
  .tag-pill:hover,
  .btn:hover,
  .btn:active,
  .tag-pill:active,
  .status-tab:active,
  .diary-tabs .tab-btn:active {
    transform: none !important;
    transition: none !important;
  }

  .main-search-input:focus {
    animation: none !important;
  }
}