/* ═══════════════════════════════════════════════════
   구축실적 — results.css
   Page: reference/results.php  ·  Prefix: ref-
═══════════════════════════════════════════════════ */

/* ── 서브메인 패딩 제거 (lx 방식 hero) ── */
.page-results #sub-main { padding-top: 0; background: var(--bg-1); }

/* ── hero 배경 색 + 이미지 ── */
.ref-hero-inner { gap: 10px; }
.ref-hero-title { color: var(--us-ink-900); font-size: var(--fs-h1); }
.ref-hero-title::after { background: var(--us-ink-500); }
.ref-hero-inner { animation: none; }
.ref-hero-inner::before {
  background: url('../imgs/reference/hero-bg.webp') right center / cover no-repeat;
  animation: subHeroZoomOut 2.0s cubic-bezier(0.16, 1, 0.3, 1) both;
}

/* ══════════════════════════════════════════════════
   STATS BAR
══════════════════════════════════════════════════ */
.ref-stats {
  background: var(--us-blue-700);
  padding: 0;
}
.ref-stats-inner {
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 60px;
  display: flex;
  box-sizing: border-box;
}
.ref-stat-item {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 32px 16px;
  border-right: 1px solid rgba(255,255,255,0.14);
  gap: 4px;
}
.ref-stat-item:last-child { border-right: none; }
.ref-stat-num {
  font-size: clamp(28px, 3vw, 44px);
  font-weight: 800;
  color: #fff;
  line-height: 1;
  letter-spacing: -0.02em;
}
.ref-stat-label {
  font-size: var(--fs-body-sm);
  color: rgba(255,255,255,0.72);
  font-weight: 500;
  letter-spacing: var(--ls);
}

/* ══════════════════════════════════════════════════
   CLIENTS SECTION
══════════════════════════════════════════════════ */
.ref-clients {
  padding: 100px 0 120px;
  background: var(--bg-1);
}
.ref-clients-inner {
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 60px;
  box-sizing: border-box;
}
.ref-head {
  margin-bottom: 52px;
}
.ref-label {
  font-size: var(--fs-eyebrow);
  font-weight: 600;
  color: var(--us-blue-700);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 10px;
  display: block;
}
.ref-title {
  font-size: var(--fs-section-title);
  font-weight: 600;
  letter-spacing: var(--ls);
  line-height: var(--lh-h2);
  margin: 0 0 16px;
}
.ref-desc {
  font-size: var(--fs-body-lg);
  color: var(--us-ink-500);
  letter-spacing: var(--ls);
  line-height: 1.7;
  margin: 0;
}

/* ── 탭 필터 ── */
.ref-tabs {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 40px;
  padding-bottom: 24px;
  border-bottom: 1.5px solid var(--border-subtle, rgba(0,0,0,0.08));
}
.ref-tab {
  padding: 10px 22px;
  border-radius: var(--r-pill);
  border: 1.5px solid var(--us-ink-200);
  background: transparent;
  color: var(--us-ink-500);
  font-size: var(--fs-body);
  cursor: pointer;
  transition: all 0.2s;
  white-space: nowrap;
}
.ref-tab:hover {
  border-color: var(--us-blue-700);
  color: var(--us-ink-000);
  background-color: var(--us-blue-700);
}
.ref-tab.is-active {
  background: var(--us-blue-700);
  border-color: var(--us-blue-700);
  color: #fff;
}

/* ── 카테고리 그룹 ── */
.ref-group { margin-bottom: 56px; }
.ref-group.is-hidden { display: none; }
.ref-group.tab-enter {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.4s var(--ease-out), transform 0.4s var(--ease-out);
}
.ref-group-title {
  font-size: var(--fs-body-lg);
  font-weight: 600;
  color: var(--us-ink-500);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin: 0 0 20px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.ref-group-title::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border-subtle, rgba(0,0,0,0.08));
}

/* ── 로고 그리드 ── */
.ref-logo-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 10px;
}
.ref-logo-item {
  border: 1.5px solid var(--border-subtle, rgba(0,0,0,0.07));
  border-radius: var(--r-md);
  background: var(--bg-1);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 20px 12px;
  min-height: 72px;
  transition: border-color 0.2s, box-shadow 0.2s;
  text-align: center;
}
.ref-logo-item p {
  font-size: var(--fs-eyebrow);
  color: var(--us-ink-500);
  letter-spacing: 0;
  line-height: 1.3;
  margin: 0;
  word-break: keep-all;
  border-top: 1.5px solid var(--us-ink-150);
  width: 100%;
  padding-top: 8px;
}
.ref-logo-item:hover {
  border-color: var(--us-blue-700);
  box-shadow: 0 4px 16px rgba(0,80,200,0.08);
}
.ref-logo-item img {
  width: 55%;
  height: 28px;
  object-fit: contain;
  display: block;
}
.ref-logo-item span {
  font-size: 12px;
  font-weight: 600;
  color: var(--us-ink-600);
  letter-spacing: 0;
  line-height: 1.35;
  word-break: keep-all;
}
.ref-logo-more {
  font-size: var(--fs-body-sm);
  color: var(--us-ink-400);
  letter-spacing: var(--ls);
  margin-top: 14px;
  text-align: right;
}

/* ══════════════════════════════════════════════════
   CTA BANNER (하단 문의하기)
══════════════════════════════════════════════════ */
.ref-cta {
  position: relative;
  overflow: hidden;
  background: var(--bg-deep-blue);
  padding: 80px 0;
}
.ref-cta-inner {
  position: relative;
  z-index: 1;
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 60px;
  box-sizing: border-box;
}
.ref-cta-text { max-width: 640px; }
.ref-cta-label {
  display: block;
  font-size: var(--fs-eyebrow);
  font-weight: 600;
  color: var(--us-sky-500);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 12px;
}
.ref-cta-title {
  font-size: var(--fs-cta-title);
  font-weight: 700;
  color: #fff;
  letter-spacing: var(--ls);
  line-height: 1.35;
  margin: 0 0 12px;
}
.ref-cta-desc {
  font-size: var(--fs-body-lg);
  color: rgba(255,255,255,0.6);
  letter-spacing: var(--ls);
  margin: 0 0 32px;
}
.ref-cta-visual {
  position: absolute;
  right: 0;
  top: 0;
  bottom: 0;
  pointer-events: none;
  -webkit-mask-image: linear-gradient(to right, transparent 0%, black 58%);
  mask-image: linear-gradient(to right, transparent 0%, black 58%);
  opacity: 0.72;
}
.ref-cta-visual img,
.ref-cta-visual video {
  height: 100%;
  width: auto;
  object-fit: cover;
  display: block;
}
.ref-cta-actions {
  display: flex;
  gap: 12px;
  flex-shrink: 0;
}
.ref-cta-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: var(--r-md);
  font-size: var(--fs-body);
  font-weight: 700;
  letter-spacing: var(--ls);
  text-decoration: none;
  transition: all 0.2s;
  white-space: nowrap;
}
.ref-cta-btn--primary {
  background: var(--us-blue-700);
  color: #fff;
  border: 2px solid var(--us-blue-700);
}
.ref-cta-btn--primary:hover { background: #0040b0; border-color: #0040b0; }
.ref-cta-btn--outline {
  background: transparent;
  color: #fff;
  border: 2px solid rgba(255,255,255,0.3);
}
.ref-cta-btn--outline:hover { border-color: #fff; background: rgba(255,255,255,0.06); }

/* ── 탭필터 래퍼 ── */
.ref-tabs-wrap {
  margin-bottom: 40px;
}
.ref-tabs {
  border-bottom: none;
  margin-bottom: 0;
  padding-bottom: 0;
}

/* ══════════════════════════════════════════════════
   RESPONSIVE
══════════════════════════════════════════════════ */
@media (max-width: 1024px) {
  .ref-stats-inner  { padding: 0 40px; }
  .ref-clients-inner { padding: 0 40px; }
  .ref-cta-inner    { padding: 0 40px; }
  .ref-logo-grid    { grid-template-columns: repeat(4, 1fr); }
  .ref-tabs-wrap    { margin: 0 -40px 40px; padding: 14px 40px; }
}
@media (max-width: 820px) {
  /* ── hero (lx 모바일 동일) ── */
  .ref-hero         { padding: calc(var(--header-h) + 0px) 0 0; }
  .ref-hero-inner   { padding: 40px 24px; border-radius: var(--r-none); background-size: cover; }
  .ref-hero-inner .prod-breadcrumb { display: none; }

  /* ── 탭필터 스와이프 ── */
  .ref-tabs-wrap    { position: sticky; top: var(--header-h); z-index: 100; background: var(--bg-1); margin: 0 -24px 28px; padding: 0; border-bottom: 1.5px solid var(--border-subtle, rgba(0, 0, 0, 0.08)); }
  .ref-tabs         { flex-wrap: nowrap; overflow-x: auto; -webkit-overflow-scrolling: touch; scrollbar-width: none; padding: 12px 24px; }
  .ref-tabs::-webkit-scrollbar { display: none; }

  .ref-stats-inner  { padding: 0 24px; flex-wrap: wrap; }
  .ref-stat-item    { flex: 1 1 33%; border-right: none; border-bottom: 1px solid rgba(255,255,255,0.1); padding: 24px 8px; }
  .ref-clients      { padding: 60px 0 80px; }
  .ref-clients-inner { padding: 0 24px; }
  .ref-logo-grid    { grid-template-columns: repeat(3, 1fr); gap: 8px; }
  .ref-logo-grid .ref-logo-item:nth-child(n+11) { display: none; }
  .ref-logo-item img { max-height: 24px; }
  .ref-cta-inner    { padding: 0 24px; flex-direction: column; align-items: flex-start; }
  .ref-cta          { padding: 60px 0; }
  .ref-cta-visual   { display: none; }
}
@media (max-width: 480px) {
  .ref-hero-inner   { padding: 28px 20px; }
  .ref-hero-btns    { flex-direction: column; align-items: flex-start; }

  .ref-logo-grid    { grid-template-columns: repeat(2, 1fr); }
  .ref-stat-item    { flex: 1 1 50%; }
}