/* ============================================================
   products.css — 製品一覧ページ専用
   Apple的余白・透明感・静かな知性
   ============================================================ */

/* ── ヒーロー ── */
.prd-hero {
  padding-top: calc(64px + clamp(4rem, 8vw, 7rem));
  padding-bottom: clamp(4rem, 8vw, 7rem);
  padding-left: var(--pad-x);
  padding-right: var(--pad-x);
  position: relative;
  overflow: hidden;
  background: var(--white);
}
.prd-hero-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
}
.prd-hero-light {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: .6;
}
.prd-hero-light--1 {
  width: clamp(400px, 55vw, 700px);
  height: clamp(400px, 55vw, 700px);
  top: -20%;
  right: -8%;
  background: radial-gradient(circle, rgba(200,223,240,.5) 0%, transparent 65%);
  animation: lightFloat1 14s ease-in-out infinite;
}
.prd-hero-light--2 {
  width: clamp(200px, 30vw, 400px);
  height: clamp(200px, 30vw, 400px);
  bottom: -10%;
  left: 5%;
  background: radial-gradient(circle, rgba(180,215,238,.3) 0%, transparent 70%);
  animation: lightFloat2 18s ease-in-out infinite;
}
.prd-hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(74,144,184,.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(74,144,184,.03) 1px, transparent 1px);
  background-size: 60px 60px;
}
@keyframes lightFloat1 { 0%,100%{transform:translate(0,0)} 50%{transform:translate(-2%,3%)} }
@keyframes lightFloat2 { 0%,100%{transform:translate(0,0)} 50%{transform:translate(2%,-4%)} }

.prd-hero-inner { position: relative; z-index: 1; max-width: var(--max); margin: 0 auto; }
.prd-h1 {
  font-size: clamp(2.2rem, 5.5vw, 3.8rem);
  font-weight: 300;
  font-family: var(--font-serif);
  color: var(--navy);
  line-height: 1.3;
  margin-bottom: 1.4rem;
  letter-spacing: -.01em;
}
.prd-lead {
  font-size: clamp(1rem, 1.6vw, 1.1rem);
  color: var(--text-mid);
  font-weight: 300;
  line-height: 2;
  max-width: 520px;
  margin-bottom: 2.5rem;
}
.prd-hero-cta {
  display: flex;
  gap: .8rem;
  flex-wrap: wrap;
}

/* ── 製品イントロ ── */
.prd-intro {
  margin-bottom: clamp(3rem, 6vw, 5rem);
  padding: 1.5rem 2rem;
  border-left: 3px solid var(--border-light);
}
.prd-intro .body-text strong { color: var(--navy); font-weight: 500; }
.prd-disclaimer {
  margin-top: .8rem;
  font-size: .78rem;
  color: var(--muted);
  font-weight: 300;
  line-height: 1.8;
}

/* ── 製品アーティクル ── */
.prd-article {
  padding: clamp(2.5rem, 5vw, 4rem) 0;
}
.prd-article-layout {
  display: grid;
  grid-template-columns: 380px 1fr;
  gap: clamp(2.5rem, 5vw, 5rem);
  align-items: start;
}
.prd-article-layout--reverse {
  grid-template-columns: 1fr 380px;
}
.prd-article-layout--reverse .prd-article-visual { order: 2; }
.prd-article-layout--reverse .prd-article-content { order: 1; }

/* ビジュアルフレーム */
.prd-article-visual { position: sticky; top: 84px; }
.prd-visual-frame {
  aspect-ratio: 3 / 4;
  background: linear-gradient(160deg, var(--off-white) 0%, var(--blue-pale) 100%);
  border: 1px solid var(--border-light);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 1.5rem;
  overflow: hidden;
  position: relative;
}
.prd-visual-frame::before {
  content: '';
  position: absolute;
  top: -30%;
  right: -20%;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(74,144,184,.12) 0%, transparent 70%);
}
.prd-visual-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.2rem;
}
.prd-visual-icon {
  width: 100px;
  height: 100px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.prd-visual-type {
  font-size: .7rem;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 400;
}

/* 吸入アニメーション */
.prd-breath-anim {
  display: flex;
  gap: 5px;
  align-items: flex-end;
  height: 60px;
}
.prd-breath-anim span {
  display: block;
  width: 8px;
  background: linear-gradient(to top, var(--blue-light), var(--blue));
  border-radius: 4px;
  animation: breathPulse 2.4s ease-in-out infinite;
  opacity: .7;
}
.prd-breath-anim span:nth-child(1) { height: 24px; animation-delay: 0s; }
.prd-breath-anim span:nth-child(2) { height: 40px; animation-delay: .2s; }
.prd-breath-anim span:nth-child(3) { height: 56px; animation-delay: .4s; }
.prd-breath-anim span:nth-child(4) { height: 40px; animation-delay: .6s; }
.prd-breath-anim span:nth-child(5) { height: 24px; animation-delay: .8s; }
@keyframes breathPulse {
  0%,100% { transform: scaleY(.6); opacity: .4; }
  50% { transform: scaleY(1); opacity: .9; }
}

/* 水滴アニメーション */
.prd-drop-anim {
  position: relative;
  width: 60px;
  height: 80px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.prd-drop {
  width: 30px;
  height: 40px;
  background: linear-gradient(to bottom, var(--blue-light), var(--blue));
  border-radius: 50% 50% 50% 50% / 40% 40% 60% 60%;
  opacity: .7;
  animation: dropFall 3s ease-in-out infinite;
}
.prd-ripple {
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 40px;
  height: 10px;
  border-radius: 50%;
  border: 1.5px solid var(--blue-light);
  animation: rippleExpand 3s ease-in-out infinite;
}
@keyframes dropFall { 0%,100%{transform:translateY(0);opacity:.7} 50%{transform:translateY(4px);opacity:.9} }
@keyframes rippleExpand { 0%,100%{transform:translateX(-50%) scale(1);opacity:.6} 50%{transform:translateX(-50%) scale(1.3);opacity:.3} }

/* 波紋アニメーション */
.prd-wave-anim {
  position: relative;
  width: 80px;
  height: 60px;
  overflow: hidden;
}
.prd-wave {
  position: absolute;
  width: 120%;
  height: 120%;
  left: -10%;
  border-radius: 40%;
  background: rgba(74,144,184,.15);
}
.prd-wave--1 { top: 30%; animation: waveSpin 8s linear infinite; }
.prd-wave--2 { top: 40%; animation: waveSpin 10s linear infinite reverse; background: rgba(74,144,184,.1); }
.prd-wave--3 { top: 50%; animation: waveSpin 12s linear infinite; background: rgba(74,144,184,.07); }
@keyframes waveSpin { from{transform:rotate(0deg)} to{transform:rotate(360deg)} }

/* コンテンツ */
.prd-article-header { margin-bottom: 1.5rem; }
.prd-type-badge {
  display: inline-block;
  font-size: .65rem;
  letter-spacing: .22em;
  text-transform: uppercase;
  padding: .3rem .9rem;
  margin-bottom: .8rem;
  font-weight: 400;
}
.prd-type-badge--air  { background: rgba(74,144,184,.08);  color: var(--blue); border: 1px solid rgba(74,144,184,.2); }
.prd-type-badge--aqua { background: rgba(91,163,201,.08); color: #3a82a8; border: 1px solid rgba(91,163,201,.2); }
.prd-type-badge--life { background: rgba(123,184,212,.08); color: #3a6e8a; border: 1px solid rgba(123,184,212,.2); }

.prd-name {
  font-family: var(--font-serif);
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  font-weight: 300;
  color: var(--navy);
  line-height: 1.2;
  letter-spacing: .02em;
  margin-bottom: .2rem;
}
.prd-name-en {
  font-family: 'Cormorant Garamond', serif;
  font-size: clamp(.85rem, 1.2vw, .95rem);
  color: var(--muted);
  font-style: italic;
  font-weight: 300;
  letter-spacing: .12em;
}

/* 価格 */
.prd-price-row {
  display: flex;
  gap: 2rem;
  align-items: baseline;
  padding: 1.4rem 0;
  border-top: 1px solid var(--border-light);
  border-bottom: 1px solid var(--border-light);
  margin-bottom: 1.8rem;
}
.prd-price-block { display: flex; flex-direction: column; gap: .2rem; }
.prd-price-label {
  font-size: .62rem;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--muted);
}
.prd-price {
  font-family: 'Cormorant Garamond', serif;
  font-size: clamp(2rem, 3.5vw, 2.8rem);
  font-weight: 300;
  color: var(--navy);
  line-height: 1;
}
.prd-price--sm { font-size: clamp(1.3rem, 2vw, 1.8rem); color: var(--text-mid); }
.prd-price-unit {
  font-family: var(--font-sans);
  font-size: .75rem;
  color: var(--muted);
  margin-left: .2rem;
}

/* セクション */
.prd-section { margin-bottom: 1.4rem; }
.prd-section-label {
  font-size: .65rem;
  letter-spacing: .2em;
  text-transform: uppercase;
  font-weight: 500;
  margin-bottom: .7rem;
  display: block;
}
.prd-section-label--scene { color: var(--blue); }
.prd-section-label--check { color: var(--muted); }

.prd-list {
  display: flex;
  flex-direction: column;
  gap: .5rem;
}
.prd-list li {
  font-size: clamp(.88rem, 1.2vw, .93rem);
  color: var(--text-mid);
  font-weight: 300;
  line-height: 1.7;
  padding-left: 1rem;
  position: relative;
}
.prd-list--scene li::before { content: '›'; position: absolute; left: 0; color: var(--blue); }
.prd-list--check li::before { content: '·'; position: absolute; left: 0; color: var(--muted); font-size: 1.2em; }

/* 配送注意 */
.prd-notice {
  margin-bottom: 1.5rem;
  padding: 1rem 1.3rem;
  background: #fff8e6;
  border: 1px solid #e6c87a;
  border-left: 3px solid #c09a20;
}
.prd-notice-title {
  font-size: .7rem;
  font-weight: 500;
  color: #7a5a00;
  margin-bottom: .4rem;
  letter-spacing: .06em;
}
.prd-notice-body {
  font-size: .82rem;
  color: #5a4200;
  font-weight: 300;
  line-height: 1.7;
}
.prd-notice-body strong { font-weight: 500; }

/* CTA */
.prd-article-cta {
  display: flex;
  gap: .8rem;
  flex-wrap: wrap;
}

/* 区切り線 */
.prd-divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border-light) 20%, var(--border-light) 80%, transparent);
}

.prd-source {
  text-align: center;
  font-size: .72rem;
  color: var(--muted);
  font-weight: 300;
  margin-top: 2.5rem;
  line-height: 1.8;
}

/* ── 選び方の考え方 ── */
.prd-how-to { background: var(--off-white); }
.prd-howto-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.2rem;
  margin-top: 2rem;
}
.prd-howto-item {
  padding: 1.4rem 1.6rem;
  background: var(--white);
  border: 1px solid var(--border-light);
  transition: border-color var(--transition), box-shadow var(--transition);
}
.prd-howto-item:hover {
  border-color: var(--blue-light);
  box-shadow: var(--shadow-sm);
}
.prd-howto-q {
  font-size: .68rem;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--blue);
  font-weight: 500;
  margin-bottom: .6rem;
}

/* ── 比較ブロック ── */
.prd-compare-block {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 3rem;
  align-items: center;
}
.prd-compare-visual { flex-shrink: 0; }
.prd-compare-circles {
  display: flex;
  gap: -10px;
  position: relative;
  width: 180px;
  height: 120px;
}
.prd-circle {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: .68rem;
  letter-spacing: .1em;
  font-weight: 400;
  position: absolute;
}
.prd-circle--1 { background: rgba(74,144,184,.15); color: var(--blue); border: 1px solid rgba(74,144,184,.2); top: 0; left: 0; }
.prd-circle--2 { background: rgba(91,163,201,.12); color: #3a82a8; border: 1px solid rgba(91,163,201,.18); top: 20px; left: 55px; }
.prd-circle--3 { background: rgba(123,184,212,.1); color: #3a6e8a; border: 1px solid rgba(123,184,212,.15); top: 40px; left: 100px; }

/* ── CTA ── */
.prd-cta {
  background: var(--navy);
  padding: clamp(4rem, 8vw, 7rem) var(--pad-x);
  text-align: center;
  position: relative;
  overflow: hidden;
}
.prd-cta::before {
  content: '';
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 700px; height: 700px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(74,144,184,.08) 0%, transparent 65%);
  pointer-events: none;
}
.prd-cta-inner { position: relative; z-index: 1; }
.prd-cta h2 { color: var(--white); font-size: clamp(1.4rem, 3vw, 2.2rem); }
.prd-cta p {
  color: rgba(255,255,255,.6);
  font-size: clamp(.95rem, 1.4vw, 1.05rem);
  font-weight: 300;
  line-height: 2;
  max-width: 480px;
  margin: 0 auto;
}
.prd-cta-btns {
  display: flex;
  gap: .8rem;
  justify-content: center;
  flex-wrap: wrap;
}
.prd-cta .btn-primary {
  background: var(--white);
  color: var(--navy);
  border-color: var(--white);
}
.prd-cta .btn-primary:hover { background: var(--blue-pale); border-color: var(--blue-pale); }
.prd-cta .btn-outline {
  border-color: rgba(255,255,255,.3);
  color: rgba(255,255,255,.8);
}
.prd-cta .btn-outline:hover { border-color: var(--white); color: var(--white); }
.prd-cta-note {
  margin-top: 1.5rem;
  font-size: .74rem;
  color: rgba(255,255,255,.28);
  letter-spacing: .06em;
}

/* ── 製品画像 ── */
.prd-visual-img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: center;
  padding: clamp(1.5rem, 4%, 2.5rem);
  display: block;
  transition: transform .6s cubic-bezier(.4,0,.2,1);
}
.prd-visual-frame:hover .prd-visual-img {
  transform: scale(1.025);
}

/* ── Responsive ── */
@media (max-width: 960px) {
  .prd-article-layout,
  .prd-article-layout--reverse {
    grid-template-columns: 1fr;
  }
  .prd-article-layout--reverse .prd-article-visual { order: 0; }
  .prd-article-layout--reverse .prd-article-content { order: 1; }
  .prd-article-visual { position: static; }
  .prd-visual-frame { aspect-ratio: 16/7; }
  .prd-compare-block { grid-template-columns: 1fr; }
  .prd-compare-visual { display: none; }
}
@media (max-width: 768px) {
  .prd-hero-cta { flex-direction: column; align-items: flex-start; }
  .prd-cta-btns { flex-direction: column; align-items: center; }
  .prd-article-cta { flex-direction: column; }
  .prd-article-cta .btn { text-align: center; }
}
@media (max-width: 480px) {
  .prd-price-row { gap: 1.2rem; }
}