/* ======== REFINEMENTS ======== */

/* Smooth scroll for all anchor links */
html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

/* ========= Nav bar shrink on scroll ========= */
.nav {
  transition: padding 0.25s ease, background 0.25s ease, backdrop-filter 0.25s ease;
}
.nav.scrolled {
  padding-top: 0.7rem;
  padding-bottom: 0.7rem;
  background: rgba(10, 10, 9, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(212, 176, 112, 0.12);
}

/* ========= Scroll-reveal animation ========= */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.6s cubic-bezier(0.2, 0.6, 0.2, 1), transform 0.6s cubic-bezier(0.2, 0.6, 0.2, 1);
  will-change: opacity, transform;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
  html { scroll-behavior: auto; }
}

/* ========= Refined hover states ========= */

/* Dropdown bars */
.dropdown-bar {
  transition: background 0.25s ease, border-color 0.25s ease, padding 0.25s ease, transform 0.2s ease;
}
.dropdown-bar:hover {
  transform: translateY(-1px);
}

/* Guide cards */
.guide-card {
  transition: transform 0.3s cubic-bezier(0.2, 0.6, 0.2, 1),
              border-color 0.3s ease,
              box-shadow 0.3s ease;
}
.guide-card:hover {
  transform: translateY(-3px);
  border-color: rgba(212, 176, 112, 0.35);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.25);
}

/* ========= Button polish ========= */
.btn-primary {
  position: relative;
  overflow: hidden;
  transition: background 0.25s ease, transform 0.1s ease, box-shadow 0.25s ease;
}
.btn-primary::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: left 0.6s ease;
  pointer-events: none;
}
.btn-primary:hover::before {
  left: 100%;
}
.btn-primary:hover {
  box-shadow: 0 4px 20px rgba(212, 176, 112, 0.25);
}
.btn-primary:active {
  transform: translateY(1px);
}

/* Nav CTA button */
.nav-cta {
  transition: background 0.25s ease, color 0.25s ease, transform 0.1s ease;
}
.nav-cta:hover {
  background: var(--accent);
  color: #0a0a09 !important;
}
.nav-cta:active {
  transform: translateY(1px);
}

/* ========= Link hover refinement ========= */
.article a:not(.btn):not(.nav-cta):not(.breadcrumb a), 
.dropdown-body a:not(.btn) {
  text-decoration: none;
  background-image: linear-gradient(90deg, var(--accent) 0%, var(--accent) 100%);
  background-size: 0 1px;
  background-repeat: no-repeat;
  background-position: left bottom;
  transition: background-size 0.35s ease;
  padding-bottom: 2px;
}
.article a:not(.btn):not(.nav-cta):not(.breadcrumb a):hover,
.dropdown-body a:not(.btn):hover {
  background-size: 100% 1px;
}

/* Nav link hover */
.nav-links a:not(.nav-cta) {
  position: relative;
  transition: color 0.2s ease;
}
.nav-links a:not(.nav-cta)::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 50%;
  width: 0;
  height: 1px;
  background: var(--accent);
  transition: width 0.3s ease, left 0.3s ease;
}
.nav-links a:not(.nav-cta):hover::after {
  width: 100%;
  left: 0;
}

/* ========= Page hero entrance ========= */
.page-hero > * {
  animation: heroEnter 0.7s cubic-bezier(0.2, 0.6, 0.2, 1) both;
}
.page-hero > *:nth-child(1) { animation-delay: 0.05s; }
.page-hero > *:nth-child(2) { animation-delay: 0.15s; }
.page-hero > *:nth-child(3) { animation-delay: 0.25s; }
.page-hero > *:nth-child(4) { animation-delay: 0.35s; }
.page-hero > *:nth-child(5) { animation-delay: 0.45s; }

@keyframes heroEnter {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

@media (prefers-reduced-motion: reduce) {
  .page-hero > * { animation: none; }
}

/* ========= Form focus ========= */
input[type="email"] {
  transition: border-color 0.25s ease, background 0.25s ease;
}
input[type="email"]:focus {
  border-color: var(--accent) !important;
  background: rgba(212, 176, 112, 0.04) !important;
  outline: none;
}

/* ========= Selection color ========= */
::selection {
  background: rgba(212, 176, 112, 0.3);
  color: #f8f6f0;
}
::-moz-selection {
  background: rgba(212, 176, 112, 0.3);
  color: #f8f6f0;
}

/* ========= Scrollbar ========= */
::-webkit-scrollbar {
  width: 10px;
}
::-webkit-scrollbar-track {
  background: #0a0a09;
}
::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.08);
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: rgba(212, 176, 112, 0.3);
}

/* ========= Callout hover ========= */
.callout {
  transition: border-color 0.3s ease;
}
.callout:hover {
  border-color: rgba(212, 176, 112, 0.25);
}

/* ========= Footer link hover ========= */
.footer a {
  transition: color 0.2s ease;
}
.footer a:hover {
  color: var(--accent);
}

/* ========= HERO VIDEO BACKGROUND ========= */
.hero {
  position: relative;
  overflow: hidden;
}
.hero-video {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 0;
  opacity: 0.45;
  pointer-events: none;
}
.hero-video-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background:
    radial-gradient(ellipse at top right, rgba(10,10,9,0.45) 0%, rgba(10,10,9,0.85) 60%, rgba(10,10,9,0.95) 100%),
    linear-gradient(180deg, rgba(10,10,9,0.4) 0%, rgba(10,10,9,0.75) 70%, rgba(10,10,9,0.95) 100%);
  z-index: 1;
  pointer-events: none;
}
.hero-inner {
  position: relative;
  z-index: 2;
}
.hero-seoul-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--sans);
  font-size: 0.5rem;
  font-weight: 700;
  letter-spacing: 0.35em;
  text-transform: uppercase;
  color: var(--text-mid);
  margin-top: 1.5rem;
  padding: 0.55rem 0.9rem;
  border: 1px solid rgba(212, 176, 112, 0.3);
  border-radius: 2px;
  background: rgba(10, 10, 9, 0.55);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  width: fit-content;
}
.hero-seoul-badge::before {
  content: '';
  display: inline-block;
  width: 6px;
  height: 6px;
  background: var(--accent);
  border-radius: 50%;
  animation: pulseDot 2s ease-in-out infinite;
}
@keyframes pulseDot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.3); }
}
@media (prefers-reduced-motion: reduce) {
  .hero-seoul-badge::before { animation: none; }
}
@media (max-width: 768px) {
  .hero-video { opacity: 0.3; }
}

/* ========= TREATMENT CARDS (skin-treatments-korea page) ========= */
.treatment-card {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 2px;
  padding: 2rem;
  margin: 2.5rem 0;
  scroll-margin-top: 100px;
}
.treatment-card h3 {
  margin-top: 0 !important;
  padding-top: 0 !important;
  border-top: none !important;
  font-size: 1.4rem !important;
  margin-bottom: 0.3rem !important;
}
.treatment-card .korean-name {
  font-family: var(--sans);
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--text-dim);
  letter-spacing: 0.05em;
  margin-bottom: 1.5rem;
  display: block;
}

.treatment-meta-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  margin: 1.5rem 0;
  padding: 1.2rem;
  background: rgba(212, 176, 112, 0.04);
  border: 1px solid rgba(212, 176, 112, 0.15);
  border-radius: 2px;
}
@media (max-width: 720px) {
  .treatment-meta-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem 1.5rem;
    padding: 1rem;
  }
}
.treatment-meta-item {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}
.treatment-meta-label {
  font-family: var(--sans);
  font-size: 0.5rem;
  font-weight: 800;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--text-dim);
}
.treatment-meta-value {
  font-family: var(--sans);
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--text);
  line-height: 1.3;
}
.treatment-meta-value.price {
  color: var(--accent);
  font-size: 1rem;
}

.treatment-best-for {
  margin-top: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}
.treatment-best-for-label {
  font-family: var(--sans);
  font-size: 0.55rem;
  font-weight: 800;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.8rem;
}
.treatment-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.treatment-tag {
  font-family: var(--sans);
  font-size: 0.6rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent);
  padding: 0.4rem 0.8rem;
  border: 1px solid rgba(212, 176, 112, 0.3);
  border-radius: 2px;
  background: rgba(212, 176, 112, 0.04);
}

/* ========= MOBILE PADDING FIX FOR ARTICLE PAGES ========= */
.article {
  padding-left: var(--pad);
  padding-right: var(--pad);
  max-width: var(--max-w);
  margin-left: auto;
  margin-right: auto;
}
@media (max-width: 720px) {
  .article {
    padding-left: 1.2rem;
    padding-right: 1.2rem;
  }
  .page-hero {
    padding-left: 1.2rem !important;
    padding-right: 1.2rem !important;
  }
  .article h2 { font-size: 1.3rem !important; }
  .article h3 { font-size: 1rem !important; }
  .article p, .article li { font-size: 0.92rem !important; }
}

/* ========= TREATMENT CARDS AS DROPDOWNS ========= */
.treatment-card-collapsible {
  padding: 0;
  margin: 0.5rem 0;
  transition: border-color 0.2s ease;
}
.treatment-card-collapsible .treatment-header {
  padding: 1.2rem 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  user-select: none;
  transition: background 0.2s ease;
}
.treatment-card-collapsible .treatment-header:hover {
  background: rgba(255, 255, 255, 0.03);
}
.treatment-card-collapsible.treatment-card-open {
  border-color: rgba(212, 176, 112, 0.25);
}
.treatment-card-collapsible.treatment-card-open .treatment-header {
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  background: rgba(212, 176, 112, 0.03);
}
.treatment-card-collapsible .treatment-name {
  font-family: var(--sans);
  font-size: 1rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.01em;
  color: var(--text);
  line-height: 1.3;
}
.treatment-card-collapsible .treatment-korean {
  font-family: var(--sans);
  font-size: 0.65rem;
  font-weight: 600;
  color: var(--text-dim);
  letter-spacing: 0.05em;
  margin-top: 0.25rem;
}
.treatment-card-collapsible .treatment-body {
  padding: 1.5rem;
}
.treatment-card-collapsible .treatment-body p {
  font-size: 0.9rem;
  line-height: 1.85;
  color: var(--text-mid);
  margin-bottom: 1rem;
}
.treatment-card-collapsible .treatment-body p strong {
  color: var(--text);
}
.treatment-arrow {
  font-size: 1.1rem;
  color: var(--accent);
  transition: transform 0.3s ease;
  margin-left: 1rem;
  flex-shrink: 0;
}
.treatment-card-open .treatment-arrow {
  transform: rotate(180deg);
}