/* ══════════════════════════════════════════
   cases.css — 고객 사례 페이지 전용 스타일
══════════════════════════════════════════ */

/* ── Hero ── */
.s-cases-hero {
  padding: 148px 0 72px;
}
.cases-hero-inner { max-width: 680px; }

.cases-h1 {
  font-size: clamp(36px, 5vw, 68px);
  font-weight: 800;
  line-height: 1.06;
  letter-spacing: -.045em;
}
.cases-h1 em { font-style: normal; color: var(--accent); }
.cases-sub {
  font-size: clamp(15px, 1.4vw, 18px);
  line-height: 1.9;
  color: var(--text-2);
  margin-top: 20px;
}

/* Stats row */
.cases-stats {
  display: flex;
  gap: 48px;
  flex-wrap: wrap;
  margin-top: 52px;
}
.cs-stat { display: flex; flex-direction: column; gap: 4px; }
.cs-num {
  font-size: clamp(32px, 4vw, 52px);
  font-weight: 800;
  letter-spacing: -.04em;
  line-height: 1;
}
.cs-unit { font-size: .55em; font-weight: 600; color: var(--text-2); }
.cs-desc { font-size: 13px; color: var(--text-3); }

/* ── Filter ── */
.s-filter {
  padding: 20px 0;
  position: sticky;
  top: 64px;
  z-index: 50;
  background: var(--bg);
  transition: background .3s;
}
.filter-row {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
.filter-btn {
  padding: 8px 18px;
  border-radius: 20px;
  border: 1px solid var(--border);
  background: transparent;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-3);
  cursor: none;
  transition: border-color .2s, background .2s, color .2s;
  white-space: nowrap;
}
.filter-btn:hover {
  border-color: var(--border-2);
  color: var(--text-2);
}
.filter-btn.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #0A0A0A;
}

/* ── Cases Grid ── */
.s-cases { padding-top: 48px; }
.cases-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

/* Case Card */
.case-card {
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 36px;
  background: var(--bg-2);
  display: flex;
  flex-direction: column;
  gap: 28px;
  transition:
    border-color .3s,
    transform .4s var(--ease-expo),
    opacity .35s;
}
.case-card:hover {
  border-color: var(--border-2);
  transform: translateY(-4px);
}
.case-card.hidden {
  display: none;
}

/* Card head */
.case-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}
.case-tags { display: flex; gap: 6px; flex-wrap: wrap; }
.case-tag {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--accent);
  padding: 4px 10px;
  border: 1px solid var(--accent-dim);
  border-radius: 12px;
  background: var(--accent-dim);
}
.case-company {
  font-size: 12px;
  color: var(--text-3);
  font-weight: 500;
}

/* Card title */
.case-title {
  font-size: clamp(18px, 2vw, 24px);
  font-weight: 800;
  line-height: 1.3;
  letter-spacing: -.025em;
}

/* Metrics */
.case-metrics {
  display: flex;
  gap: 0;
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
}
.case-metric {
  flex: 1;
  padding: 16px;
  text-align: center;
  border-right: 1px solid var(--border);
}
.case-metric:last-child { border-right: none; }
.cm-num {
  font-size: clamp(20px, 2.5vw, 28px);
  font-weight: 800;
  letter-spacing: -.03em;
  line-height: 1;
  color: var(--accent);
}
.cm-unit {
  font-size: .6em;
  font-weight: 600;
  color: var(--text-2);
}
.cm-label {
  font-size: 11px;
  color: var(--text-3);
  margin-top: 4px;
  line-height: 1.4;
}

/* Body blocks */
.case-body { display: flex; flex-direction: column; gap: 16px; }
.case-block { display: flex; flex-direction: column; gap: 6px; }
.case-block-label {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--text-3);
}
.case-block p {
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-2);
}

/* Quote */
.case-quote {
  border-top: 1px solid var(--border);
  padding-top: 24px;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.case-quote p {
  font-size: 15px;
  line-height: 1.8;
  color: var(--text);
  font-style: italic;
  position: relative;
  padding-left: 20px;
}
.case-quote p::before {
  content: '"';
  position: absolute;
  left: 0;
  top: -8px;
  font-size: 40px;
  line-height: 1;
  color: var(--accent);
  opacity: .3;
  font-family: Georgia, serif;
  font-style: normal;
}
.case-quote footer {
  display: flex;
  align-items: center;
  gap: 12px;
}
.quote-avatar {
  width: 40px; height: 40px;
  border-radius: 50%;
  overflow: hidden;
  flex-shrink: 0;
  background: transparent;
  border: none;
}
.quote-avatar svg { display: block; width: 40px; height: 40px; }
.quote-name {
  font-size: 13px;
  font-weight: 700;
}
.quote-role {
  font-size: 11px;
  color: var(--text-3);
  margin-top: 2px;
}

/* ── CTA ── */
.s-cases-cta {
  border-top: 1px solid var(--border);
  background: var(--bg-2);
}
.cases-cta-inner {
  text-align: center;
  max-width: 560px;
  margin: 0 auto;
}
.cases-cta-h {
  font-size: clamp(32px, 4vw, 58px);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -.04em;
}
.cases-cta-h em { font-style: normal; color: var(--accent); }
.cases-cta-sub {
  font-size: 16px;
  color: var(--text-2);
  margin-top: 14px;
  line-height: 1.8;
}
.cases-cta-btns {
  display: flex;
  gap: 12px;
  justify-content: center;
  margin-top: 36px;
  flex-wrap: wrap;
}

/* ── Responsive ── */
@media (max-width: 900px) {
  .cases-grid { grid-template-columns: 1fr; }
  .cases-stats { gap: 32px; }
  .case-card { padding: 28px; }
}
@media (max-width: 600px) {
  .case-metrics { flex-direction: column; }
  .case-metric { border-right: none; border-bottom: 1px solid var(--border); }
  .case-metric:last-child { border-bottom: none; }
  .cases-cta-btns { flex-direction: column; align-items: center; }
  .s-filter { top: 56px; }
}