/* ============================================================
   rich.css ── 見た目・動きの上乗せレイヤー
   ------------------------------------------------------------
   ・style.css / usage-flow.css の「後ろ」に読み込みます。
   ・元のファイルは一切書き換えていません。この1枚を外せば元の見た目に戻ります。
   ・レイアウト（グリッドの段数・要素の並び）は変更していません。
     足しているのは「奥行き・動き・ホバーの反応」だけです。
   ============================================================ */

:root {
  --rc-ease: cubic-bezier(0.22, 1, 0.36, 1);
  --rc-ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --rc-accent: #e7ff00;
  --rc-accent-deep: #c8dd00;
  --rc-ink: #121212;
  --rc-shadow-sm: 0 2px 8px rgb(18 18 18 / 5%);
  --rc-shadow-md: 0 14px 34px rgb(18 18 18 / 9%);
  --rc-shadow-lg: 0 26px 60px rgb(18 18 18 / 14%);
}

::selection {
  background: var(--rc-accent);
  color: var(--rc-ink);
}

:focus-visible {
  outline: 3px solid #1c7cf0;
  outline-offset: 3px;
}

/* 細めのスクロールバー（対応ブラウザのみ） */
@supports (scrollbar-width: thin) {
  html {
    scrollbar-width: thin;
    scrollbar-color: #c9c9c3 transparent;
  }
}

/* ============================================================
   0. 出現アニメーション（共通のしくみ）
   ------------------------------------------------------------
   JS が html に .rc-ready を付けたときだけ効きます。
   JSが動かない環境では何も隠れません。
   ============================================================ */

/* JSがクラスを付ける前にちらつかないよう、ヒーローの要素だけ先に伏せておく。
   （.rc-ready は head のインラインスクリプトが即座に付けます。
     JSが動かない環境では .rc-ready が付かないので、何も隠れません） */
.rc-ready .catalog-intro > .catalog-kicker,
.rc-ready .catalog-intro h1,
.rc-ready .catalog-intro .catalog-lead,
.rc-ready .catalog-intro .catalog-description,
.rc-ready .catalog-intro .uf-flow,
.rc-ready .catalog-intro .helper-link {
  opacity: 0;
}

.rc-ready [data-reveal] {
  opacity: 0;
  transform: translateY(20px);
}

.rc-ready [data-reveal].is-in {
  opacity: 1;
  transform: none;
  transition:
    opacity 0.75s ease var(--rc-delay, 0s),
    transform 0.85s var(--rc-ease) var(--rc-delay, 0s);
}

/* 見出し用：下からせり上がって現れる */
.rc-ready [data-reveal="mask"] {
  opacity: 0;
  clip-path: inset(0 0 108% 0);
  transform: translateY(16px);
}

.rc-ready [data-reveal="mask"].is-in {
  opacity: 1;
  clip-path: inset(0 0 -12% 0);
  transform: none;
  transition:
    opacity 0.6s ease var(--rc-delay, 0s),
    clip-path 1.05s var(--rc-ease) var(--rc-delay, 0s),
    transform 1.05s var(--rc-ease) var(--rc-delay, 0s);
}

/* ============================================================
   1. 最上部のスクロール進行バー
   ============================================================ */

.rc-scroll-progress {
  position: fixed;
  top: 0;
  right: 0;
  left: 0;
  z-index: 90;
  height: 2px;
  pointer-events: none;
}

.rc-scroll-progress i {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, var(--rc-accent-deep), var(--rc-accent));
  transform: scaleX(var(--rc-progress, 0));
  transform-origin: left center;
}

/* ============================================================
   2. ヘッダー
   ============================================================ */

.site-header {
  background: rgb(255 255 255 / 72%);
  backdrop-filter: blur(16px) saturate(1.6);
  -webkit-backdrop-filter: blur(16px) saturate(1.6);
  border-bottom-color: transparent;
  transition:
    background 320ms ease,
    border-color 320ms ease,
    box-shadow 320ms ease;
}

.site-header.rc-scrolled {
  background: rgb(255 255 255 / 88%);
  border-bottom-color: var(--catalog-line);
  box-shadow: 0 6px 24px rgb(18 18 18 / 6%);
}

.site-header .header-inner {
  transition: min-height 320ms var(--rc-ease);
}

.site-header.rc-scrolled .header-inner {
  min-height: 58px;
}

/* ブランド：ホバーで小さく持ち上がる */
.brand {
  transition: transform 280ms var(--rc-ease);
}

.brand:hover {
  transform: translateY(-1px);
}

.brand > span {
  position: relative;
}

.brand > span::after {
  content: "";
  position: absolute;
  bottom: -3px;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--rc-accent);
  transform: scaleX(0);
  transform-origin: right center;
  transition: transform 420ms var(--rc-ease);
}

.brand:hover > span::after {
  transform-origin: left center;
  transform: scaleX(1);
}

/* ナビ：下線がスライドして出る */
.header-nav button {
  position: relative;
  overflow: hidden;
  transition:
    background 260ms var(--rc-ease),
    color 260ms var(--rc-ease),
    transform 260ms var(--rc-ease);
}

.header-nav button::after {
  content: "";
  position: absolute;
  bottom: 5px;
  left: 13px;
  width: calc(100% - 26px);
  height: 1.5px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 320ms var(--rc-ease);
}

.header-nav button:hover {
  background: transparent;
  color: var(--rc-ink);
  transform: translateY(-1px);
}

.header-nav button:hover::after {
  transform: scaleX(1);
}

/* ============================================================
   3. ヒーロー（トップ上部）
   ------------------------------------------------------------
   白基調のまま、上部にごく淡い光と方眼を敷いて奥行きを出す。
   ============================================================ */

.view-home {
  position: relative;
  isolation: isolate;
}

/* 光のにじみ */
.view-home::before {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  z-index: -2;
  height: min(1020px, 96vh);
  background:
    radial-gradient(78% 52% at 50% -8%, rgb(231 255 0 / 26%), rgb(231 255 0 / 0%) 62%),
    radial-gradient(44% 34% at 88% 6%, rgb(150 170 255 / 12%), transparent 70%),
    radial-gradient(40% 30% at 8% 14%, rgb(255 214 140 / 12%), transparent 72%);
  pointer-events: none;
}

/* 細い方眼（上から下へ消えていく） */
.view-home::after {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  z-index: -1;
  height: min(760px, 78vh);
  background-image:
    linear-gradient(to right, rgb(18 18 18 / 4%) 1px, transparent 1px),
    linear-gradient(to bottom, rgb(18 18 18 / 4%) 1px, transparent 1px);
  background-size: 68px 68px;
  -webkit-mask-image: linear-gradient(to bottom, #000 0%, rgb(0 0 0 / 45%) 45%, transparent 100%);
  mask-image: linear-gradient(to bottom, #000 0%, rgb(0 0 0 / 45%) 45%, transparent 100%);
  pointer-events: none;
}

/* キッカー：前後に小さなアクセント */
.catalog-kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: #7c8800;
}

.catalog-kicker::before,
.catalog-kicker::after {
  content: "";
  width: 16px;
  height: 3px;
  background: var(--rc-accent);
}

.catalog-intro h1 {
  position: relative;
  background: linear-gradient(180deg, #101010 30%, #3a3a38 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* リード文：黄色のマーカーが左から引かれる（1行に収まる幅のときだけ） */
@media (min-width: 900px) {
  .catalog-lead {
    position: relative;
    display: inline-block;
    isolation: isolate;
  }

  .catalog-lead::before {
    content: "";
    position: absolute;
    right: -10px;
    bottom: 4px;
    left: -10px;
    z-index: -1;
    height: 0.4em;
    background: var(--rc-accent);
    transform: scaleX(0);
    transform-origin: left center;
  }

  .rc-ready .catalog-lead.is-in::before {
    transform: scaleX(1);
    transition: transform 0.95s var(--rc-ease) 0.3s;
  }
}

/* 「まとまっていない方へ」ボタン：光沢が横切る */
.helper-link {
  position: relative;
  overflow: hidden;
  isolation: isolate;
  transition:
    border-color 280ms ease,
    background 280ms ease,
    transform 280ms var(--rc-ease),
    box-shadow 280ms ease;
}

.helper-link::after {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: -60%;
  z-index: -1;
  width: 45%;
  background: linear-gradient(100deg, transparent, rgb(231 255 0 / 55%), transparent);
  transform: skewX(-18deg);
}

.helper-link:hover {
  transform: translateY(-2px);
  box-shadow: var(--rc-shadow-md);
}

.helper-link:hover::after {
  animation: rc-sheen 900ms var(--rc-ease);
}

@keyframes rc-sheen {
  to { left: 120%; }
}

/* ============================================================
   4. 使い方3ステップ（アニメーションの見え方を強化）
   ============================================================ */

.uf-flow {
  position: relative;
  border-color: var(--catalog-line);
  border-radius: 2px;
  background: #ffffff;
  box-shadow: var(--rc-shadow-sm);
  transition: box-shadow 400ms ease;
}

.uf-flow:hover {
  box-shadow: var(--rc-shadow-md);
}

/* 区切り位置に「›」を置いて、流れの向きを示す */
@media (min-width: 640px) {
  .uf-flow::before,
  .uf-flow::after {
    content: "›";
    position: absolute;
    top: 50%;
    z-index: 3;
    display: grid;
    width: 22px;
    height: 22px;
    place-items: center;
    border: 1px solid var(--catalog-line);
    border-radius: 50%;
    background: #ffffff;
    color: #9a9d94;
    font-size: 13px;
    font-weight: 700;
    line-height: 1;
    transform: translate(-50%, -50%);
  }

  .uf-flow::before { left: 33.333%; }
  .uf-flow::after  { left: 66.666%; }
}

.uf-step.is-active {
  box-shadow: inset 0 0 0 1px rgb(231 255 0 / 55%);
}

/* 再生中のステージの後ろに、うっすら光を置く */
.uf-step .uf-stage::after {
  content: "";
  position: absolute;
  inset: -10% -6%;
  z-index: -1;
  background: radial-gradient(46% 50% at 50% 48%, rgb(231 255 0 / 17%), transparent 74%);
  opacity: 0;
  transition: opacity 600ms ease;
}

.uf-step .uf-stage {
  isolation: isolate;
}

.uf-step.is-active .uf-stage::after {
  opacity: 1;
}

.uf-step .uf-num {
  transition:
    color 300ms ease,
    transform 480ms var(--rc-ease);
}

.uf-step.is-active .uf-num {
  transform: scale(1.16);
  color: var(--rc-accent-deep);
}

.uf-step:hover {
  background: #fcfcfa;
}

.uf-step.is-active:hover {
  background: var(--uf-active-bg, #fbffe0);
}

/* ============================================================
   5. カタログ見出し・件数
   ============================================================ */

.catalog-heading {
  position: relative;
}

.catalog-heading::after {
  content: "";
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--rc-accent);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 1.1s var(--rc-ease) 0.15s;
}

.rc-ready .catalog-heading.is-in::after {
  transform: scaleX(1);
}

.catalog-count span {
  display: inline-block;
  font-variant-numeric: tabular-nums;
  transition: transform 240ms var(--rc-ease);
}

.catalog-count.rc-bump span {
  transform: translateY(-3px) scale(1.12);
}

/* ============================================================
   6. 絞り込み
   ============================================================ */

.filter-menu summary {
  transition:
    border-color 220ms ease,
    background 220ms ease,
    transform 220ms var(--rc-ease),
    box-shadow 220ms ease;
}

.filter-menu summary:hover {
  border-color: #b4b4ae;
  transform: translateY(-1px);
  box-shadow: var(--rc-shadow-sm);
}

.filter-menu[open] summary {
  box-shadow: var(--rc-shadow-sm);
}

.filter-menu-count {
  animation: rc-pop 420ms var(--rc-ease);
}

@keyframes rc-pop {
  0%   { transform: scale(0); }
  62%  { transform: scale(1.22); }
  100% { transform: scale(1); }
}

.filter-menu[open] .filter-panel {
  animation: rc-panel 320ms var(--rc-ease-out) both;
  transform-origin: top left;
}

@keyframes rc-panel {
  from { opacity: 0; transform: translateY(-8px) scale(0.985); }
  to   { opacity: 1; transform: none; }
}

/* パネル内の選択肢が順番に立ち上がる */
.filter-menu[open] .filter-option {
  animation: rc-chip-in 360ms var(--rc-ease) both;
  animation-delay: calc(var(--rc-i, 0) * 22ms + 60ms);
}

@keyframes rc-chip-in {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: none; }
}

.filter-option span {
  transition:
    border-color 200ms ease,
    background 200ms ease,
    color 200ms ease,
    transform 200ms var(--rc-ease);
}

.filter-option:hover span {
  border-color: var(--rc-ink);
  transform: translateY(-1px);
}

.filter-option input:checked + span {
  box-shadow: 0 4px 12px rgb(200 221 0 / 45%);
}

.filter-panel-close {
  min-height: 34px;
  margin-left: auto;
  padding: 7px 14px;
  border: 1px solid var(--catalog-text);
  border-radius: 999px;
  background: var(--catalog-text);
  color: #ffffff;
  font-size: 11px;
  font-weight: 700;
  cursor: pointer;
  transition: transform 200ms var(--rc-ease), background 200ms ease;
}

.filter-panel-close:hover {
  background: #30302e;
  transform: translateY(-1px);
}

@media (max-width: 639px) {
  .filter-panel-close {
    width: 100%;
    margin-top: 6px;
    margin-left: 0;
  }
}

.active-filter-list button,
.filter-clear {
  transition: color 200ms ease, transform 200ms var(--rc-ease);
}

.active-filter-list button:hover,
.filter-clear:hover {
  color: var(--rc-ink);
  transform: translateY(-1px);
}

.active-filter-list button {
  animation: rc-chip-in 300ms var(--rc-ease) both;
}

/* ============================================================
   7. デザインカード（ここが主役）
   ============================================================ */

.prompt-grid {
  row-gap: 52px;
}

.prompt-card {
  --rc-delay: calc(var(--rc-i, 0) * 70ms);
  transition: transform 460ms var(--rc-ease);
}

.prompt-card:hover {
  transform: translateY(-6px);
}

.prompt-preview-button {
  cursor: zoom-in;
}

/* サムネイル：枠・影・読み込み中のシマー */
.prompt-thumb {
  border-radius: 3px;
  box-shadow: var(--rc-shadow-sm);
  transition:
    border-color 320ms ease,
    box-shadow 460ms var(--rc-ease);
}

.prompt-card:hover .prompt-thumb {
  border-color: var(--rc-ink);
  box-shadow: var(--rc-shadow-lg);
}

/* 上に重ねる暗幕（ホバー時だけ薄く出る） */
.prompt-thumb::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 2;
  background: linear-gradient(to top, rgb(18 18 18 / 46%), rgb(18 18 18 / 0%) 52%);
  opacity: 0;
  transition: opacity 320ms ease;
  pointer-events: none;
}

.prompt-card:hover .prompt-thumb::before,
.prompt-preview-button:focus-visible .prompt-thumb::before {
  opacity: 1;
}

/* 読み込み中のシマー（画像が届いたら消える） */
.prompt-thumb::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  background: linear-gradient(100deg, #f1f1ed 28%, #fafaf7 46%, #f1f1ed 64%);
  background-size: 260% 100%;
  animation: rc-shimmer 1.5s linear infinite;
  pointer-events: none;
}

.prompt-thumb.is-loaded::after {
  opacity: 0;
  visibility: hidden;
  animation: none;
  transition: opacity 420ms ease, visibility 0s linear 420ms;
}

@keyframes rc-shimmer {
  from { background-position: 130% 0; }
  to   { background-position: -130% 0; }
}

.prompt-thumb img {
  position: relative;
  z-index: 1;
  opacity: 0;
  transform: scale(1.04);
  transition:
    transform 720ms var(--rc-ease),
    opacity 620ms ease;
}

.prompt-thumb.is-loaded img {
  opacity: 1;
  transform: scale(1);
}

/* ホバーでゆっくり寄る（元の 1.025 / opacity .7 を上書き） */
.prompt-preview-button:hover .prompt-thumb.is-loaded img,
.prompt-preview-button:focus-visible .prompt-thumb.is-loaded img {
  opacity: 1;
  transform: scale(1.065);
}

/* 「拡大して見る」ラベル：下からせり上がる */
.preview-label {
  z-index: 3;
  border-radius: 999px;
  transform: translateY(10px);
  transition:
    opacity 280ms ease,
    transform 380ms var(--rc-ease);
}

.prompt-preview-button:hover .preview-label,
.prompt-preview-button:focus-visible .preview-label {
  transform: none;
}

/* 通し番号 */
.prompt-number {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: #8a8a84;
}

.prompt-number::before {
  content: "";
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--rc-accent-deep);
  transition: transform 320ms var(--rc-ease);
}

.prompt-card:hover .prompt-number::before {
  transform: scale(1.6);
}

.prompt-title {
  transition: transform 400ms var(--rc-ease);
}

.prompt-card:hover .prompt-title {
  transform: translateX(3px);
}

/* タグをチップに */
.prompt-tags span {
  padding: 3px 8px;
  border: 1px solid #e4e4de;
  border-radius: 999px;
  background: #fbfbf9;
  color: #7d7d77;
  font-size: 9.5px;
  line-height: 1.5;
  transition: border-color 220ms ease, color 220ms ease, background 220ms ease;
}

.prompt-card:hover .prompt-tags span {
  border-color: #d3d3cc;
  color: #5f5f5a;
}

/* DLボタン：黄色が左から流れ込む */
.prompt-download {
  position: relative;
  overflow: hidden;
  isolation: isolate;
  transition:
    border-color 260ms ease,
    color 260ms ease,
    transform 260ms var(--rc-ease),
    box-shadow 260ms ease;
}

.prompt-download::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: var(--rc-accent);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 460ms var(--rc-ease);
}

.prompt-download:hover,
.prompt-download:focus-visible {
  border-color: var(--rc-ink);
  background: transparent;
  color: var(--rc-ink);
  box-shadow: var(--rc-shadow-sm);
}

.prompt-download:hover::before,
.prompt-download:focus-visible::before {
  transform: scaleX(1);
}

.prompt-download span {
  padding: 3px 7px;
  border-radius: 999px;
  transition: background 260ms ease, color 260ms ease;
}

.prompt-download:hover span {
  background: var(--rc-ink);
  color: #ffffff;
}

.prompt-download:active {
  transform: scale(0.985);
}

/* 該当なしの表示 */
.catalog-empty {
  border-radius: 3px;
  background: #fbfbf9;
  animation: rc-chip-in 420ms var(--rc-ease) both;
}

/* ============================================================
   8. 拡大ダイアログ
   ============================================================ */

.preview-dialog {
  border: 0;
  border-radius: 4px;
  box-shadow: 0 40px 100px rgb(0 0 0 / 45%);
}

.preview-dialog[open] {
  animation: rc-dialog-in 420ms var(--rc-ease-out);
}

@keyframes rc-dialog-in {
  from { opacity: 0; transform: translateY(14px) scale(0.975); }
  to   { opacity: 1; transform: none; }
}

.preview-dialog::backdrop {
  background: rgb(10 10 10 / 78%);
  backdrop-filter: blur(10px);
  animation: rc-fade-in 320ms ease;
}

@keyframes rc-fade-in {
  from { opacity: 0; }
  to   { opacity: 1; }
}

.preview-dialog-bar {
  background: rgb(255 255 255 / 92%);
  backdrop-filter: blur(10px);
}

.preview-dialog-close {
  transition:
    border-color 200ms ease,
    background 200ms ease,
    color 200ms ease,
    transform 200ms var(--rc-ease);
}

.preview-dialog-close:hover {
  border-color: var(--rc-ink);
  background: var(--rc-ink);
  color: #ffffff;
  transform: translateY(-1px);
}

.preview-dialog-image img {
  border-radius: 2px;
  box-shadow: var(--rc-shadow-md);
}

/* ============================================================
   9. トースト
   ============================================================ */

.toast {
  border-left: 3px solid var(--rc-accent);
  animation: rc-toast-in 520ms var(--rc-ease);
}

@keyframes rc-toast-in {
  0%   { opacity: 0; transform: translateY(18px) scale(0.96); }
  70%  { transform: translateY(-3px) scale(1.01); }
  100% { opacity: 1; transform: none; }
}

/* ============================================================
   10. 要件メーカー／確認画面
   ------------------------------------------------------------
   hidden が外れた瞬間に、CSSアニメーションが自動で走ります。
   ============================================================ */

/* トップと同じ空気になるよう、上部にうっすら光を敷く */
.view-maker,
.view-review {
  position: relative;
  isolation: isolate;
}

.view-maker::before,
.view-review::before {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  z-index: -1;
  height: min(560px, 60vh);
  background:
    radial-gradient(64% 44% at 18% 0%, rgb(103 89 243 / 8%), transparent 68%),
    radial-gradient(52% 38% at 92% 4%, rgb(231 255 0 / 16%), transparent 70%);
  pointer-events: none;
}

.view-maker:not([hidden]) .maker-intro,
.view-review:not([hidden]) .review-heading {
  animation: rc-rise 720ms var(--rc-ease) both;
}

.view-maker:not([hidden]) .maker-panel,
.view-review:not([hidden]) .review-layout {
  animation: rc-rise 780ms var(--rc-ease) 120ms both;
}

@keyframes rc-rise {
  from { opacity: 0; transform: translateY(22px); }
  to   { opacity: 1; transform: none; }
}

/* ステップが切り替わるたびに、質問がすっと入れ替わる */
.form-step:not([hidden]) {
  animation: rc-step-in 520ms var(--rc-ease) both;
}

@keyframes rc-step-in {
  from { opacity: 0; transform: translateX(14px); }
  to   { opacity: 1; transform: none; }
}

.maker-panel {
  box-shadow: var(--rc-shadow-md);
}

/* 進行バーに光沢 */
.progress-track {
  overflow: hidden;
}

#progressBar {
  position: relative;
  overflow: hidden;
  transition: width 620ms var(--rc-ease);
}

#progressBar::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(100deg, transparent 20%, rgb(255 255 255 / 55%) 50%, transparent 80%);
  background-size: 200% 100%;
  animation: rc-shine 2.2s linear infinite;
}

@keyframes rc-shine {
  from { background-position: 140% 0; }
  to   { background-position: -140% 0; }
}

/* 選択肢 */
.choice-item label {
  transition:
    border-color 200ms ease,
    background 200ms ease,
    transform 220ms var(--rc-ease),
    box-shadow 220ms ease;
}

.choice-item label:hover {
  transform: translateY(-2px);
  box-shadow: var(--rc-shadow-sm);
}

.choice-item label::after {
  transition:
    border-color 200ms ease,
    background 200ms ease,
    transform 320ms var(--rc-ease);
}

.choice-item input:checked + label {
  box-shadow: 0 8px 20px rgb(103 89 243 / 18%);
}

.choice-item input:checked + label::after {
  animation: rc-check 460ms var(--rc-ease);
}

@keyframes rc-check {
  0%   { transform: translateY(-50%) scale(0.4); }
  60%  { transform: translateY(-50%) scale(1.22); }
  100% { transform: translateY(-50%) scale(1); }
}

/* ボタン */
.button {
  position: relative;
  overflow: hidden;
  transition:
    background 240ms ease,
    color 240ms ease,
    border-color 240ms ease,
    transform 240ms var(--rc-ease),
    box-shadow 240ms ease;
}

.button:hover {
  transform: translateY(-2px);
  box-shadow: var(--rc-shadow-md);
}

.button:active {
  transform: translateY(0) scale(0.99);
}

.button::after {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: -60%;
  width: 42%;
  background: linear-gradient(100deg, transparent, rgb(255 255 255 / 42%), transparent);
  transform: skewX(-18deg);
  pointer-events: none;
}

.button:hover::after {
  animation: rc-sheen 820ms var(--rc-ease);
}

.button-accent::after {
  background: linear-gradient(100deg, transparent, rgb(18 18 18 / 16%), transparent);
}

/* 確認画面のプレビュー */
.preview-card {
  box-shadow: var(--rc-shadow-md);
}

.download-panel {
  box-shadow: var(--rc-shadow-md);
}

.next-design {
  animation: rc-rise 620ms var(--rc-ease) both;
}

/* ============================================================
   11. フッター
   ============================================================ */

.site-footer {
  position: relative;
  overflow: hidden;
}

.site-footer::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  left: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--rc-accent), transparent);
  opacity: 0.7;
}

/* ============================================================
   12. 動きを減らす設定の端末では、すべて静止
   ============================================================ */

@media (prefers-reduced-motion: reduce) {
  .rc-ready [data-reveal],
  .rc-ready [data-reveal="mask"] {
    opacity: 1 !important;
    clip-path: none !important;
    transform: none !important;
  }

  .prompt-thumb::after,
  #progressBar::after,
  .helper-link::after,
  .button::after {
    animation: none !important;
  }

  .prompt-thumb img {
    opacity: 1;
    transform: none;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}

/* Header wordmark ------------------------------------------------------ */
.brand {
  position: relative;
  display: inline-flex;
  align-items: center;
  padding: 5px 0;
  line-height: 1;
}

.brand-logo-frame {
  position: relative;
  display: block;
  width: clamp(138px, 13vw, 170px);
  height: auto;
  overflow: visible;
}

.brand-logo {
  display: block;
  width: 100%;
  max-width: none;
  height: auto;
  transform: none;
}

@media (max-width: 420px) {
  .brand-logo-frame {
    width: 132px;
    height: auto;
  }
}

/* Hero wordmark -------------------------------------------------------- */
.catalog-intro h1 {
  display: grid;
  place-items: center;
}

.hero-logo {
  display: block;
  width: min(58%, 408px);
  height: auto;
  object-fit: contain;
}