/* ============================================================
   Lien Dental Clinic — cases.css
   症例ページ(cases.html)専用スタイル
   ※ 先に common.css を読み込むこと
   ------------------------------------------------------------
   目次:
     01. Page Hero
     02. Page Intro (注記)
     03. Tabs UI
     04. Cases Grid
     05. Case Card
     06. No Result State
     07. Page CTA
   ============================================================ */


/* ============================================================
   01. Page Hero
   ============================================================ */
.cases-hero {
  position: relative;
  padding: clamp(120px, 18vw, 200px) 0 clamp(60px, 9vw, 100px);
  color: #fff;
  overflow: hidden;
  background:
    linear-gradient(135deg, rgba(184, 212, 227, 0.45) 0%, rgba(44, 62, 80, 0.65) 100%),
    url('../images/hero/cases-hero.jpg') center/cover;
}

.cases-hero-content {
  position: relative;
  z-index: 2;
  max-width: 760px;
}

.cases-hero-eyebrow {
  font-family: var(--font-serif-en);
  font-size: 12px;
  letter-spacing: 0.36em;
  text-transform: uppercase;
  color: #fff;
  margin-bottom: 28px;
  display: inline-flex;
  align-items: center;
  gap: 16px;
  font-weight: 500;
}
.cases-hero-eyebrow::before {
  content: "";
  width: 48px;
  height: 1px;
  background: rgba(255, 255, 255, 0.7);
}

.cases-hero-title {
  font-family: var(--font-serif-jp);
  font-weight: 500;
  font-size: clamp(28px, 4.6vw, 52px);
  line-height: 1.55;
  letter-spacing: 0.06em;
  color: #fff;
  text-shadow: 0 2px 20px rgba(44, 62, 80, 0.25);
}
.cases-hero-title .small-en {
  display: block;
  font-family: var(--font-serif-en);
  font-size: clamp(14px, 1.8vw, 18px);
  letter-spacing: 0.22em;
  font-style: italic;
  font-weight: 300;
  color: rgba(255, 255, 255, 0.85);
  margin-top: 20px;
}

.cases-hero-sub {
  margin-top: 28px;
  font-size: 14.5px;
  color: rgba(255, 255, 255, 0.92);
  line-height: 2.1;
  max-width: 540px;
  text-shadow: 0 2px 12px rgba(44, 62, 80, 0.18);
}


/* ============================================================
   02. Page Intro (注記)
   ============================================================ */
.cases-intro {
  padding: clamp(56px, 8vw, 80px) 0;
  background: var(--color-bg-secondary);
}

.cases-intro-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  align-items: start;
}
@media (min-width: 900px) {
  .cases-intro-grid {
    grid-template-columns: 1fr 1.4fr;
    gap: 56px;
  }
}

.cases-intro-body {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 2.1;
}
.cases-intro-body p + p {
  margin-top: 1.4em;
}

.cases-intro-note {
  margin-top: 24px;
  font-size: 12px;
  color: var(--color-text-secondary);
  line-height: 1.95;
  background: #fff;
  padding: 18px 22px;
  border-left: 2px solid var(--color-primary-light);
}
.cases-intro-note strong {
  color: var(--color-text-primary);
  font-weight: 500;
}


/* ============================================================
   03. Tabs UI
   ============================================================ */
.cases-main {
  padding: clamp(60px, 9vw, 100px) 0 var(--space-section);
  background: var(--color-bg-primary);
}

.case-tabs-wrap {
  margin-bottom: 56px;
  border-bottom: 1px solid var(--color-line);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.case-tabs {
  display: flex;
  gap: 0;
  min-width: max-content;
}

.case-tab {
  padding: 18px 28px;
  font-family: var(--font-sans-jp);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--color-text-muted);
  position: relative;
  white-space: nowrap;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  transition: color .3s ease;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  background: none;
  border-top: none;
  border-left: none;
  border-right: none;
}
.case-tab:hover {
  color: var(--color-text-primary);
}
.case-tab-en {
  font-family: var(--font-serif-en);
  font-size: 10px;
  letter-spacing: 0.24em;
  color: var(--color-text-muted);
  font-style: italic;
  text-transform: uppercase;
  font-weight: 400;
}
.case-tab.is-active {
  color: var(--color-primary-dark);
  border-bottom-color: var(--color-primary-dark);
}
.case-tab.is-active .case-tab-en {
  color: var(--color-primary-main);
}


/* ============================================================
   04. Cases Grid
   ============================================================ */
.case-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}
@media (min-width: 700px) {
  .case-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }
}
@media (min-width: 1100px) {
  .case-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
  }
}


/* ============================================================
   05. Case Card
   ============================================================ */
.case-card {
  background: #fff;
  border: 1px solid var(--color-line-soft);
  display: flex;
  flex-direction: column;
  transition: transform .35s ease, box-shadow .35s ease, opacity .35s ease;
  opacity: 1;
}
.case-card:hover {
  box-shadow: 0 24px 50px rgba(44, 62, 80, 0.08);
  transform: translateY(-4px);
}
.case-card.is-hidden {
  display: none;
}

.case-card-images {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3px;
  position: relative;
  background: var(--color-line-soft);
}
.case-card-images::before {
  content: "→";
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: #fff;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary-dark);
  z-index: 2;
  font-size: 13px;
  border: 1px solid var(--color-line);
}

.case-card-img {
  aspect-ratio: 4/3;
  background-size: cover;
  background-position: center;
  position: relative;
}
.case-card-img.before-img {
  background: linear-gradient(135deg, #E4EAF0, #B8D4E3);
}
.case-card-img.after-img {
  background: linear-gradient(135deg, #F5D4CA, #E8B5AC);
}

/* category-specific tint variations */
.case-card[data-category="aesthetic"] .case-card-img.before-img {
  background: linear-gradient(135deg, #E4EAF0, #B8D4E3);
}
.case-card[data-category="aesthetic"] .case-card-img.after-img {
  background: linear-gradient(135deg, #F5D4CA, #E8B5AC);
}
.case-card[data-category="whitening"] .case-card-img.before-img {
  background: linear-gradient(135deg, #DAD2C7, #E8DCC8);
}
.case-card[data-category="whitening"] .case-card-img.after-img {
  background: linear-gradient(135deg, #FAFBFC, #F0F5F8);
}
.case-card[data-category="orthodontics"] .case-card-img.before-img {
  background: linear-gradient(135deg, #C9BDB6, #DAD2C7);
}
.case-card[data-category="orthodontics"] .case-card-img.after-img {
  background: linear-gradient(135deg, #B8D4E3, #6B8FA8);
}
.case-card[data-category="other"] .case-card-img.before-img {
  background: linear-gradient(135deg, #D9D2CC, #C0B5AE);
}
.case-card[data-category="other"] .case-card-img.after-img {
  background: linear-gradient(135deg, #E8E0DC, #B8D4E3);
}

.case-card-img::before {
  content: "BEFORE";
  position: absolute;
  top: 8px;
  left: 8px;
  background: rgba(255, 255, 255, 0.95);
  padding: 3px 9px;
  font-family: var(--font-serif-en);
  font-size: 9px;
  letter-spacing: 0.22em;
  color: var(--color-text-primary);
  font-weight: 500;
}
.case-card-img.after-img::before {
  content: "AFTER";
  color: var(--color-primary-dark);
}

.case-card-body {
  padding: 22px 22px 24px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.case-card-tag {
  font-family: var(--font-serif-en);
  font-size: 10.5px;
  letter-spacing: 0.22em;
  color: var(--color-primary-main);
  font-weight: 500;
  margin-bottom: 8px;
  display: block;
}

.case-card-title {
  font-family: var(--font-serif-jp);
  font-size: 16px;
  font-weight: 500;
  line-height: 1.55;
  color: var(--color-text-primary);
  margin-bottom: 18px;
  letter-spacing: 0.04em;
}

.case-card-detail {
  font-size: 12px;
  color: var(--color-text-secondary);
  line-height: 1.85;
  border-top: 1px solid var(--color-line-soft);
  padding-top: 14px;
  margin-bottom: 14px;
  display: grid;
  gap: 6px;
}
.case-card-detail > div {
  display: grid;
  grid-template-columns: 90px 1fr;
  gap: 8px;
  margin: 0;
}
.case-card-detail dt {
  color: var(--color-text-muted);
  font-size: 10.5px;
  letter-spacing: 0.08em;
}
.case-card-detail dd {
  margin: 0;
}

.case-card-risk {
  padding: 11px 13px;
  background: rgba(245, 212, 202, 0.18);
  font-size: 11px;
  color: var(--color-text-secondary);
  line-height: 1.7;
  border-left: 2px solid var(--color-accent-deep);
  margin-bottom: 10px;
}
.case-card-risk strong {
  color: var(--color-text-primary);
  font-weight: 500;
}

.case-card-disclaimer {
  font-size: 10.5px;
  color: var(--color-text-muted);
  margin-top: auto;
  letter-spacing: 0.02em;
}


/* ============================================================
   06. No Result State
   ============================================================ */
.case-no-result {
  display: none;
  text-align: center;
  padding: 80px 0;
}
.case-no-result.is-visible {
  display: block;
}
.case-no-result p {
  font-family: var(--font-serif-jp);
  font-size: 15px;
  color: var(--color-text-muted);
  letter-spacing: 0.04em;
}


/* ============================================================
   07. Page CTA (cases ページ専用に独自定義)
   ============================================================ */
.page-cta {
  padding: clamp(80px, 12vw, 130px) 0;
  background:
    radial-gradient(ellipse 60% 60% at 20% 80%, rgba(184, 212, 227, 0.35), transparent 70%),
    radial-gradient(ellipse 60% 60% at 85% 20%, rgba(245, 212, 202, 0.25), transparent 70%),
    var(--color-bg-secondary);
  text-align: center;
}

.page-cta-content {
  max-width: 720px;
  margin: 0 auto;
}

.page-cta-eyebrow {
  font-family: var(--font-serif-en);
  font-size: 12px;
  letter-spacing: 0.36em;
  color: var(--color-primary-main);
  margin-bottom: 24px;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 14px;
  text-transform: uppercase;
}
.page-cta-eyebrow::before,
.page-cta-eyebrow::after {
  content: "";
  width: 40px;
  height: 1px;
  background: var(--color-primary-main);
}

.page-cta-title {
  font-family: var(--font-serif-jp);
  font-size: clamp(24px, 3.4vw, 36px);
  line-height: 1.65;
  font-weight: 500;
  letter-spacing: 0.08em;
  margin-bottom: 20px;
  color: var(--color-text-primary);
}
.page-cta-title .accent {
  color: var(--color-primary-dark);
  position: relative;
  display: inline-block;
}
.page-cta-title .accent::after {
  content: "";
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 100%;
  height: 1px;
  background: var(--color-accent-soft);
}

.page-cta-lead {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 2.1;
  margin-bottom: 40px;
}

.page-cta-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  justify-content: center;
  margin-bottom: 32px;
}

.page-cta-phone {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 18px 32px;
  background: #fff;
  border: 1px solid var(--color-line);
}
.page-cta-phone .label {
  font-family: var(--font-serif-en);
  font-size: 10px;
  letter-spacing: 0.3em;
  color: var(--color-text-muted);
  font-weight: 500;
  text-transform: uppercase;
}
.page-cta-phone .num {
  font-family: var(--font-serif-en);
  font-size: 28px;
  letter-spacing: 0.04em;
  color: var(--color-text-primary);
  font-weight: 500;
}
.page-cta-phone .hours {
  font-size: 11px;
  color: var(--color-text-secondary);
  letter-spacing: 0.04em;
}