/* =====================================================
   DR. YOON SKIN CLINIC — INTERNATIONAL LANDING CSS
   Apple-style · Premium Dermatology · EN / ZH / JA
   ===================================================== */

/* ── 기본 변수 ── */
:root {
  --lp-dark:   #0a0a0a;
  --lp-dark2:  #111111;
  --lp-dark3:  #1a1a1a;
  --lp-gold:   #c8a96e;
  --lp-gold2:  #e8cfa0;
  --lp-white:  #ffffff;
  --lp-cream:  #f8f5f0;
  --lp-gray:   #8a8a8a;
  --lp-sub:    #555555;
  --ease: cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

/* ── 페이지 기본 ── */
.lp-page { background: #fff; scroll-behavior: smooth; }
.lpw { max-width: 1200px; margin: 0 auto; padding: 0 40px; }

/* ── 공통 섹션 ── */
.lp-s { padding: 120px 0; }
.lp-s.dark  { background: var(--lp-dark); }
.lp-s.dark2 { background: var(--lp-dark2); }
.lp-s.cream { background: var(--lp-cream); }
.lp-s.white { background: var(--lp-white); }

/* ── 공통 타이포 ── */
.lp-eye {
  font-size: .65rem; font-weight: 700;
  letter-spacing: .25em; text-transform: uppercase;
  color: var(--lp-gold); display: block; margin-bottom: 20px;
}
.lp-h1 {
  font-family: var(--ff-serif);
  font-size: clamp(2.8rem, 6vw, 6rem);
  font-weight: 400; line-height: 1.08;
  letter-spacing: -.03em; margin-bottom: 28px;
}
.lp-h2 {
  font-size: clamp(2rem, 4vw, 3.6rem);
  font-weight: 900; letter-spacing: -.05em;
  line-height: 1.1; margin-bottom: 20px;
}
.lp-h2.lt { color: #fff; }
.lp-h2.dt { color: #0a0a0a; }
.lp-lead {
  font-size: 1.05rem; line-height: 1.8;
  letter-spacing: -.01em; max-width: 600px;
}
.lp-lead.lt { color: rgba(255,255,255,.6); }
.lp-lead.dt { color: var(--lp-sub); }

/* ── Scroll 애니메이션 ── */
.fade-up {
  opacity: 0; transform: translateY(40px);
  transition: opacity .9s var(--ease), transform .9s var(--ease);
}
.fade-up.delay-1 { transition-delay: .15s; }
.fade-up.delay-2 { transition-delay: .3s; }
.fade-up.delay-3 { transition-delay: .45s; }
.fade-up.delay-4 { transition-delay: .6s; }
.fade-up.visible { opacity: 1; transform: translateY(0); }

/* ═══════════════════════════════
   1. HERO
═══════════════════════════════ */
.lp-hero {
  position: relative; min-height: 100svh;
  background: var(--lp-dark);
  display: flex; align-items: center; overflow: hidden;
}
.lp-hero-bg {
  position: absolute; inset: 0; overflow: hidden;
}
.lp-hero-bg video,
.lp-hero-bg img {
  width: 100%; height: 100%;
  object-fit: cover; object-position: center 30%;
  opacity: .45;
  animation: slowzoom 20s ease-in-out infinite alternate;
}
@keyframes slowzoom {
  from { transform: scale(1); }
  to   { transform: scale(1.06); }
}
.lp-hero-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(
    135deg,
    rgba(10,10,10,.88) 0%,
    rgba(10,10,10,.55) 60%,
    rgba(10,10,10,.75) 100%
  );
}
.lp-hero-content {
  position: relative; z-index: 3;
  padding: 140px 0 100px; width: 100%;
}
.lp-hero-badge {
  display: inline-flex; align-items: center; gap: 10px;
  border: 1px solid rgba(200,169,110,.4); padding: 7px 18px;
  border-radius: 2px; font-size: .65rem; font-weight: 700;
  letter-spacing: .22em; color: var(--lp-gold);
  text-transform: uppercase; margin-bottom: 36px;
}
.lp-hero-title {
  font-family: var(--ff-serif);
  font-size: clamp(3rem, 7vw, 6.5rem);
  font-weight: 400; color: #fff;
  line-height: 1.06; letter-spacing: -.04em;
  margin-bottom: 32px; max-width: 800px;
}
.lp-hero-title em { color: var(--lp-gold); font-style: normal; }
.lp-hero-subtitle {
  font-size: 1.05rem; color: rgba(255,255,255,.6);
  line-height: 1.8; max-width: 520px; margin-bottom: 48px;
}
.lp-hero-btns { display: flex; gap: 14px; flex-wrap: wrap; }
.lp-btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 16px 36px; border-radius: 3px;
  font-size: .9rem; font-weight: 700; letter-spacing: .04em;
  text-decoration: none; transition: all .3s var(--ease);
}
.lp-btn-gold { background: var(--lp-gold); color: #000; }
.lp-btn-gold:hover { background: var(--lp-gold2); transform: translateY(-2px); }
.lp-btn-out  { background: transparent; color: #fff; border: 1px solid rgba(255,255,255,.35); }
.lp-btn-out:hover  { border-color: var(--lp-gold); color: var(--lp-gold); }
.lp-hero-scroll {
  position: absolute; bottom: 40px; left: 50%;
  transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; gap: 8px;
  font-size: .6rem; letter-spacing: .2em; color: rgba(255,255,255,.3);
  text-transform: uppercase; z-index: 3;
  animation: bounce 2.5s ease-in-out infinite;
}
.lp-hero-scroll::after {
  content: '↓'; font-size: 1.1rem; color: var(--lp-gold);
}
@keyframes bounce {
  0%,100% { transform: translateX(-50%) translateY(0); }
  50%      { transform: translateX(-50%) translateY(6px); }
}

/* ═══════════════════════════════
   2. PHILOSOPHY
═══════════════════════════════ */
.lp-philo { text-align: center; }
.lp-philo-lead {
  font-family: var(--ff-serif);
  font-size: clamp(1.6rem, 3.5vw, 3rem);
  font-weight: 400; color: #0a0a0a;
  line-height: 1.35; letter-spacing: -.03em;
  max-width: 800px; margin: 0 auto 48px;
}
.lp-philo-lead em { color: var(--lp-gold); font-style: normal; }
.lp-philo-body {
  font-size: .98rem; color: var(--lp-sub);
  line-height: 1.85; max-width: 640px; margin: 0 auto;
}
.lp-philo-body p { margin-bottom: 20px; }
.lp-philo-body p:last-child { margin-bottom: 0; }

/* ═══════════════════════════════
   3. TREATMENTS (Horizontal Scroll)
═══════════════════════════════ */
.lp-treat-head { margin-bottom: 52px; }
.lp-treat-scroll {
  display: flex; gap: 24px;
  overflow-x: auto; scroll-snap-type: x mandatory;
  padding: 0 40px 32px;
  -ms-overflow-style: none; scrollbar-width: none;
  cursor: grab;
}
.lp-treat-scroll::-webkit-scrollbar { display: none; }
.lp-treat-scroll.grabbing { cursor: grabbing; }
.lp-treat-card {
  flex: 0 0 320px; scroll-snap-align: start;
  border-radius: 4px; overflow: hidden;
  background: var(--lp-dark3); border: 1px solid rgba(255,255,255,.07);
  transition: border-color .4s, transform .4s;
}
.lp-treat-card:hover { border-color: var(--lp-gold); transform: translateY(-4px); }
.lp-treat-card-img {
  height: 240px; overflow: hidden; position: relative;
  background: var(--lp-dark);
}
.lp-treat-card-img img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform .8s var(--ease);
}
.lp-treat-card:hover .lp-treat-card-img img { transform: scale(1.06); }
.lp-treat-card-body { padding: 28px 28px 32px; }
.lp-treat-card-num {
  font-size: .6rem; font-weight: 700; letter-spacing: .2em;
  color: var(--lp-gold); display: block; margin-bottom: 10px;
}
.lp-treat-card-name {
  font-size: 1.1rem; font-weight: 900; color: #fff;
  letter-spacing: -.04em; margin-bottom: 10px;
}
.lp-treat-card-desc {
  font-size: .8rem; color: rgba(255,255,255,.5); line-height: 1.7;
}
.lp-treat-card-tag {
  display: inline-block; margin-top: 14px;
  font-size: .65rem; font-weight: 700; letter-spacing: .12em;
  color: var(--lp-gold); border: 1px solid rgba(200,169,110,.3);
  padding: 4px 10px; border-radius: 2px;
}

/* ═══════════════════════════════
   4. SKIN CONCERNS
═══════════════════════════════ */
.lp-concern-intro { max-width: 560px; margin-bottom: 56px; }
.lp-concern-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px;
}
.lp-concern-card {
  border-radius: 4px; overflow: hidden;
  border: 1px solid #ece8e0; background: #fff;
  transition: all .4s var(--ease);
}
.lp-concern-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 20px 48px rgba(0,0,0,.09);
  border-color: var(--lp-gold);
}
.lp-concern-img {
  height: 180px; overflow: hidden;
  background: linear-gradient(135deg, #f0ece4 0%, #e0d8cc 100%);
}
.lp-concern-img img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform .8s var(--ease);
}
.lp-concern-card:hover .lp-concern-img img { transform: scale(1.05); }
.lp-concern-body { padding: 24px; }
.lp-concern-icon { font-size: 1.4rem; margin-bottom: 10px; display: block; }
.lp-concern-name {
  font-size: .95rem; font-weight: 800; color: #0a0a0a;
  letter-spacing: -.04em; margin-bottom: 8px;
}
.lp-concern-desc { font-size: .78rem; color: var(--lp-sub); line-height: 1.65; }
.lp-concern-bottom {
  margin-top: 48px; border-top: 1px solid #ece8e0;
  padding-top: 32px; max-width: 560px;
  font-size: .88rem; color: var(--lp-sub); line-height: 1.75;
}

/* ═══════════════════════════════
   5. DOCTOR
═══════════════════════════════ */
.lp-doc-grid {
  display: grid; grid-template-columns: 420px 1fr; gap: 80px;
  align-items: center;
}
.lp-doc-img {
  aspect-ratio: 3/4; border-radius: 4px; overflow: hidden;
  background: var(--lp-dark3);
}
.lp-doc-img img {
  width: 100%; height: 100%; object-fit: cover;
  object-position: center top;
  transition: transform .8s var(--ease);
}
.lp-doc-img:hover img { transform: scale(1.03); }
.lp-doc-eye {
  font-size: .65rem; font-weight: 700; letter-spacing: .22em;
  color: var(--lp-gold); text-transform: uppercase;
  margin-bottom: 16px; display: block;
}
.lp-doc-name {
  font-size: clamp(1.6rem, 3vw, 2.8rem); font-weight: 900;
  color: #0a0a0a; letter-spacing: -.05em;
  margin-bottom: 8px; line-height: 1.1;
}
.lp-doc-title {
  font-size: .88rem; color: var(--lp-gold); letter-spacing: .04em;
  margin-bottom: 28px; display: block;
  font-style: italic;
}
.lp-doc-desc {
  font-size: .92rem; color: var(--lp-sub); line-height: 1.8;
  margin-bottom: 32px; border-left: 2px solid var(--lp-gold);
  padding-left: 20px;
}
.lp-doc-spec { display: flex; flex-direction: column; gap: 8px; }
.lp-doc-spec-label {
  font-size: .6rem; font-weight: 800; letter-spacing: .18em;
  color: var(--lp-gray); text-transform: uppercase; margin-bottom: 4px;
}
.lp-doc-tags {
  display: flex; flex-wrap: wrap; gap: 8px;
}
.lp-doc-tag {
  font-size: .78rem; font-weight: 600; color: var(--lp-gold);
  border: 1px solid rgba(200,169,110,.3); padding: 5px 14px;
  border-radius: 20px; background: rgba(200,169,110,.06);
}

/* ═══════════════════════════════
   6. DEVICE ARSENAL
═══════════════════════════════ */
.lp-device-head { text-align: center; margin-bottom: 64px; }
.lp-device-count {
  font-family: var(--ff-serif);
  font-size: clamp(3rem, 8vw, 8rem); font-weight: 300;
  color: #fff; line-height: 1;
  opacity: .15; display: block; margin-bottom: -20px;
}
.lp-device-list {
  display: flex; flex-wrap: wrap;
  justify-content: center; gap: 16px 0;
  max-width: 900px; margin: 0 auto;
}
.lp-device-name {
  font-size: clamp(.95rem, 2vw, 1.3rem); color: rgba(255,255,255,.7);
  font-weight: 800; letter-spacing: -.02em;
  padding: 0 24px;
  position: relative; opacity: 0;
  transition: opacity .6s var(--ease), color .3s;
}
.lp-device-name.visible { opacity: 1; }
.lp-device-name:hover { color: var(--lp-gold); }
.lp-device-name:not(:last-child)::after {
  content: '·'; position: absolute; right: 0;
  color: rgba(200,169,110,.3); font-weight: 300;
}
.lp-device-sub {
  text-align: center; margin-top: 48px;
  font-size: .88rem; color: rgba(255,255,255,.35);
  max-width: 480px; margin: 48px auto 0;
  line-height: 1.7;
}

/* ═══════════════════════════════
   7. INTERNATIONAL VISITORS
═══════════════════════════════ */
.lp-intl-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 80px;
  align-items: center;
}
.lp-intl-img {
  aspect-ratio: 4/3; border-radius: 4px; overflow: hidden;
  background: var(--lp-dark3);
}
.lp-intl-img img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform .8s var(--ease);
}
.lp-intl-img:hover img { transform: scale(1.03); }
.lp-intl-list {
  list-style: none; padding: 0; margin: 32px 0;
  display: flex; flex-direction: column; gap: 14px;
}
.lp-intl-list li {
  display: flex; align-items: flex-start; gap: 12px;
  font-size: .9rem; color: var(--lp-sub); line-height: 1.6;
}
.lp-intl-list li::before {
  content: '→'; color: var(--lp-gold); flex-shrink: 0;
  font-size: .85rem; margin-top: 2px;
}

/* ═══════════════════════════════
   8. FINAL CTA
═══════════════════════════════ */
.lp-cta {
  position: relative; min-height: 80vh;
  background: var(--lp-dark);
  display: flex; align-items: center; justify-content: center;
  text-align: center; overflow: hidden;
}
.lp-cta-bg {
  position: absolute; inset: 0;
}
.lp-cta-bg img {
  width: 100%; height: 100%; object-fit: cover; opacity: .25;
  animation: slowzoom 18s ease-in-out infinite alternate;
}
.lp-cta-overlay {
  position: absolute; inset: 0;
  background: radial-gradient(ellipse at center, rgba(10,10,10,.6) 0%, rgba(10,10,10,.92) 100%);
}
.lp-cta-content {
  position: relative; z-index: 3; padding: 80px 40px;
  max-width: 800px;
}
.lp-cta-title {
  font-family: var(--ff-serif);
  font-size: clamp(1.8rem, 4vw, 3.5rem); font-weight: 400;
  color: #fff; line-height: 1.35; letter-spacing: -.03em;
  margin-bottom: 20px;
}
.lp-cta-title em { color: var(--lp-gold); font-style: normal; }
.lp-cta-sub {
  font-size: .9rem; color: rgba(255,255,255,.4);
  margin-bottom: 48px; letter-spacing: .04em;
  text-transform: uppercase; font-weight: 600;
}
.lp-cta-btns { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }

/* ═══════════════════════════════
   LANG SWITCHER (header)
═══════════════════════════════ */
.lp-lang-bar {
  display: flex; align-items: center; gap: 4px; margin-left: 20px;
}
.lp-lang-bar a {
  display: flex; align-items: center; justify-content: center;
  width: 30px; height: 30px; border-radius: 50%;
  font-size: 1.1rem; text-decoration: none;
  transition: transform .2s, opacity .2s; opacity: .75;
}
.lp-lang-bar a:hover { transform: scale(1.2); opacity: 1; }
.lp-lang-bar a.active { opacity: 1; }

/* ═══════════════════════════════
   RESPONSIVE
═══════════════════════════════ */
@media (max-width: 1024px) {
  .lpw { padding: 0 24px; }
  .lp-s { padding: 80px 0; }
  .lp-doc-grid { grid-template-columns: 1fr; gap: 48px; }
  .lp-doc-img { max-width: 360px; }
  .lp-intl-grid { grid-template-columns: 1fr; gap: 48px; }
  .lp-concern-grid { grid-template-columns: repeat(2, 1fr); }
  .lp-treat-scroll { padding: 0 24px 24px; }
}
@media (max-width: 768px) {
  .lp-hero-title { font-size: 2.6rem; }
  .lp-concern-grid { grid-template-columns: 1fr; }
  .lp-treat-card { flex: 0 0 280px; }
  .lp-hero-btns { flex-direction: column; align-items: flex-start; }
  .lp-cta-btns { flex-direction: column; align-items: center; }
  .lp-cta-btns .lp-btn { width: 100%; max-width: 300px; justify-content: center; }
  .lp-device-list { gap: 12px 0; }
  .lp-device-name { font-size: .9rem; padding: 0 14px; }
}
@media (max-width: 480px) {
  .lpw { padding: 0 16px; }
  .lp-s { padding: 64px 0; }
  .lp-hero-content { padding: 100px 0 80px; }
}
@media (prefers-reduced-motion: reduce) {
  .fade-up { opacity: 1; transform: none; transition: none; }
  .lp-hero-bg video, .lp-hero-bg img,
  .lp-cta-bg img { animation: none; }
}