@import url('https://fonts.googleapis.com/css2?family=Montserrat:wght@300;400;500;600&family=Noto+Sans+KR:wght@300;400;500;700&family=Playfair+Display:ital,wght@0,400;0,600;1,400&display=swap');

/* --- Design Tokens & Variables --- */
:root {
  --bg-primary: #FDFCFB;
  --bg-secondary: #F6F3EE;
  --bg-tertiary: #ECE7DF;
  --text-primary: #1C1917;
  --text-secondary: #44403C;
  --text-muted: #78716C;
  --accent: #9A7B56;
  --accent-light: #C5A880;
  --accent-dark: #705335;
  --white: #FFFFFF;
  --black: #000000;
  
  --font-serif: 'Playfair Display', serif;
  --font-sans: 'Noto Sans KR', 'Montserrat', sans-serif;
  
  --transition-smooth: all 0.6s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-fast: all 0.2s ease;
  
  --header-height: 90px;
  --max-width: 1320px;
  --container-padding: 0 4rem;
}

@media (max-width: 768px) {
  :root {
    --header-height: 70px;
    --container-padding: 0 1.5rem;
  }
}

/* --- Reset & Base Styles --- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition-fast);
}

button {
  background: none;
  border: none;
  font: inherit;
  cursor: pointer;
}

img, video {
  max-width: 100%;
  height: auto;
  display: block;
}

/* --- Typography --- */
h1, h2, h3, h4, .serif-font {
  font-family: var(--font-serif);
  font-weight: 400;
  line-height: 1.25;
}

.section-title-wrapper {
  margin-bottom: 4rem;
  text-align: center;
}

.section-subtitle {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  margin-bottom: 0.75rem;
  display: block;
}

.section-title {
  font-size: 2.75rem;
  color: var(--text-primary);
  position: relative;
  display: inline-block;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -15px;
  left: 50%;
  transform: translateX(-50%);
  width: 50px;
  height: 1px;
  background-color: var(--accent);
}

@media (max-width: 768px) {
  .section-title {
    font-size: 2.2rem;
  }
  .section-title-wrapper {
    margin-bottom: 2.5rem;
  }
}

/* --- Layout Components --- */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--container-padding);
}

.section {
  padding: 8rem 0;
}

@media (max-width: 768px) {
  .section {
    padding: 5rem 0;
  }
}

/* --- Header & Navigation --- */
header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  z-index: 1000;
  transition: var(--transition-smooth);
}

header.scrolled {
  background-color: rgba(253, 252, 251, 0.95);
  backdrop-filter: blur(10px);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.02);
  height: 75px;
  border-bottom: 1px solid rgba(62, 47, 34, 0.05);
}

header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 100%;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.logo-text {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  letter-spacing: 0.1em;
  color: var(--text-primary);
  font-weight: 600;
}

.logo-sub {
  font-size: 0.75rem;
  color: var(--accent);
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

nav {
  display: flex;
  align-items: center;
  gap: 3rem;
}

.nav-links {
  display: flex;
  gap: 2.5rem;
  list-style: none;
}

.nav-links a {
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  color: var(--text-secondary);
  position: relative;
  padding: 0.5rem 0;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1px;
  background-color: var(--accent);
  transition: var(--transition-fast);
}

.nav-links a:hover {
  color: var(--accent);
}

.nav-links a:hover::after {
  width: 100%;
}

/* Lang Switcher */
.lang-switcher {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  border: 1px solid rgba(62, 47, 34, 0.15);
  padding: 0.35rem 0.6rem;
  border-radius: 20px;
  background-color: transparent;
  transition: var(--transition-fast);
}

.lang-btn {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-muted);
  padding: 0.1rem 0.4rem;
  border-radius: 10px;
  transition: var(--transition-fast);
}

.lang-btn.active {
  color: var(--white);
  background-color: var(--accent);
}

/* Mobile Nav Toggle */
.mobile-nav-toggle {
  display: none;
  flex-direction: column;
  gap: 6px;
  width: 30px;
  z-index: 1100;
}

.mobile-nav-toggle span {
  width: 100%;
  height: 2px;
  background-color: var(--text-primary);
  transition: var(--transition-fast);
}

@media (max-width: 992px) {
  .mobile-nav-toggle {
    display: flex;
  }
  
  nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    max-width: 400px;
    height: 100vh;
    background-color: var(--bg-primary);
    box-shadow: -10px 0 30px rgba(0, 0, 0, 0.05);
    flex-direction: column;
    justify-content: center;
    align-items: flex-start;
    padding: 4rem;
    gap: 4rem;
    transition: var(--transition-smooth);
    z-index: 1050;
  }
  
  nav.active {
    right: 0;
  }
  
  .nav-links {
    flex-direction: column;
    gap: 2rem;
  }
  
  .nav-links a {
    font-size: 1.25rem;
  }
  
  .mobile-nav-toggle.active span:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
  }
  .mobile-nav-toggle.active span:nth-child(2) {
    opacity: 0;
  }
  .mobile-nav-toggle.active span:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
  }
}

/* --- Hero Section --- */
.hero {
  height: 100vh;
  position: relative;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero-video-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 1;
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(to bottom, rgba(28,25,23,0.4) 0%, rgba(28,25,23,0.7) 100%);
  z-index: 2;
}

.hero-content {
  position: relative;
  z-index: 3;
  color: var(--white);
  max-width: 800px;
  padding-top: 5rem;
}

.hero-tagline {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  letter-spacing: 0.25em;
  color: var(--accent-light);
  margin-bottom: 1.5rem;
  text-transform: uppercase;
  opacity: 0;
  transform: translateY(20px);
  animation: fadeUp 1.2s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.hero-title {
  font-size: 4.5rem;
  font-weight: 400;
  margin-bottom: 2rem;
  line-height: 1.15;
  opacity: 0;
  transform: translateY(30px);
  animation: fadeUp 1.2s cubic-bezier(0.16, 1, 0.3, 1) 0.2s forwards;
}

.hero-desc {
  font-size: 1.1rem;
  font-weight: 300;
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 3.5rem;
  max-width: 600px;
  line-height: 1.8;
  opacity: 0;
  transform: translateY(30px);
  animation: fadeUp 1.2s cubic-bezier(0.16, 1, 0.3, 1) 0.4s forwards;
}

.hero-cta-group {
  display: flex;
  gap: 1.5rem;
  opacity: 0;
  transform: translateY(30px);
  animation: fadeUp 1.2s cubic-bezier(0.16, 1, 0.3, 1) 0.6s forwards;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 1.1rem 2.2rem;
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  border-radius: 0;
  transition: var(--transition-smooth);
}

.btn-primary {
  background-color: var(--accent);
  color: var(--white);
}

.btn-primary:hover {
  background-color: var(--accent-light);
}

.btn-secondary {
  border: 1px solid rgba(255, 255, 255, 0.4);
  color: var(--white);
  backdrop-filter: blur(5px);
}

.btn-secondary:hover {
  background-color: var(--white);
  color: var(--black);
  border-color: var(--white);
}

@keyframes fadeUp {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 768px) {
  .hero-title {
    font-size: 3rem;
  }
  .hero-desc {
    font-size: 1rem;
  }
  .hero-cta-group {
    flex-direction: column;
    gap: 1rem;
  }
}

/* --- About/Philosophy Section --- */
.about {
  background-color: var(--bg-secondary);
}

.about-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 6rem;
  align-items: center;
}

.about-img-wrapper {
  position: relative;
}

.about-img-main {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
  box-shadow: 20px 20px 0px var(--bg-tertiary);
}

.about-text-content {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.about-header {
  font-family: var(--font-serif);
  font-size: 2.25rem;
  line-height: 1.3;
}

.about-header span {
  color: var(--accent);
  display: block;
}

.about-body {
  color: var(--text-secondary);
  font-size: 1.05rem;
}

.about-highlights {
  margin-top: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.highlight-item {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.highlight-icon {
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: rgba(154, 123, 86, 0.1);
  color: var(--accent);
  border-radius: 50%;
  font-size: 0.8rem;
}

.highlight-text {
  font-weight: 500;
  font-size: 0.95rem;
}

@media (max-width: 992px) {
  .about-grid {
    grid-template-columns: 1fr;
    gap: 4rem;
  }
  
  .about-img-main {
    box-shadow: 10px 10px 0px var(--bg-tertiary);
  }
}

/* --- Spaces/Facilities Gallery --- */
.spaces {
  background-color: var(--bg-primary);
}

.spaces-tab-nav {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  margin-bottom: 3.5rem;
  flex-wrap: wrap;
}

.tab-btn {
  padding: 0.75rem 2rem;
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  border-bottom: 2px solid transparent;
  transition: var(--transition-fast);
}

.tab-btn.active, .tab-btn:hover {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

.spaces-display {
  position: relative;
  min-height: 500px;
}

.space-panel {
  display: none;
  grid-template-columns: 1fr 1.2fr;
  gap: 5rem;
  align-items: center;
}

.space-panel.active {
  display: grid;
  animation: fadeIn 0.8s ease-in-out forwards;
}

.space-text {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.space-name {
  font-size: 2.25rem;
  color: var(--text-primary);
}

.space-desc {
  color: var(--text-secondary);
  font-size: 1.05rem;
}

.space-features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.space-features li {
  position: relative;
  padding-left: 1.5rem;
  font-size: 0.95rem;
  color: var(--text-muted);
}

.space-features li::before {
  content: '•';
  position: absolute;
  left: 0;
  color: var(--accent);
  font-size: 1.2rem;
}

.space-gallery {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.space-img-container {
  overflow: hidden;
  position: relative;
  aspect-ratio: 2/3;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
  border-radius: 12px;
}

.space-img-container.span-2 {
  grid-column: span 2;
  justify-self: center;
  width: 60%;
  aspect-ratio: 2/3;
}

@media (max-width: 768px) {
  .space-img-container.span-2 {
    width: 100%;
  }
}

.space-img-container img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition-smooth);
}

.space-img-container:hover img {
  transform: scale(1.08);
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(15px); }
  to { opacity: 1; transform: translateY(0); }
}

@media (max-width: 992px) {
  .space-panel {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
  .spaces-display {
    min-height: auto;
  }
}

/* --- Programs & Prices --- */
.programs {
  background-color: var(--bg-secondary);
}

.programs-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2.5rem;
}

.program-card {
  background-color: var(--bg-primary);
  border: 1px solid rgba(62, 47, 34, 0.05);
  padding: 3.5rem 2.5rem;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: var(--transition-smooth);
}

.program-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 20px 40px rgba(62, 47, 34, 0.05);
  border-color: rgba(154, 123, 86, 0.2);
}

.program-card.featured {
  border: 1.5px solid var(--accent);
}

.badge {
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  background-color: var(--accent);
  color: var(--white);
  font-size: 0.7rem;
  font-weight: 600;
  padding: 0.25rem 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.program-type {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--accent);
  margin-bottom: 0.5rem;
  font-weight: 600;
}

.program-name {
  font-size: 1.75rem;
  margin-bottom: 1.5rem;
  color: var(--text-primary);
}

.program-desc {
  font-size: 0.95rem;
  color: var(--text-muted);
  margin-bottom: 2.5rem;
  flex-grow: 1;
}

.program-footer {
  border-top: 1px solid rgba(62, 47, 34, 0.08);
  padding-top: 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: baseline;
}

.program-time {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.program-price {
  font-family: var(--font-serif);
  font-size: 2rem;
  color: var(--text-primary);
  font-weight: 600;
}

.program-price span {
  font-size: 1rem;
  font-family: var(--font-sans);
  font-weight: 400;
}

@media (max-width: 992px) {
  .programs-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .programs-grid {
    grid-template-columns: 1fr;
  }
  .program-card {
    padding: 2.5rem 2rem;
  }
}

/* --- Location & Contact --- */
.contact {
  background-color: var(--bg-primary);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 5rem;
  align-items: stretch;
}

.contact-info-panel {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 2rem 0;
}

.contact-details {
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
}

.contact-item {
  display: flex;
  gap: 1.5rem;
}

.contact-icon {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--bg-secondary);
  color: var(--accent);
  border-radius: 50%;
  font-size: 1.1rem;
  flex-shrink: 0;
}

.contact-text-box h4 {
  font-family: var(--font-sans);
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.contact-text-box p {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.contact-actions {
  margin-top: 3.5rem;
  display: flex;
  gap: 1rem;
}

.map-container {
  width: 100%;
  min-height: 450px;
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.03);
  position: relative;
  background-color: var(--bg-secondary);
  overflow: hidden;
}

.map-placeholder-img {
  width: 100%;
  height: 108%;
  object-fit: cover;
  margin-top: -6%;
}

.map-overlay-btn {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background-color: rgba(28, 25, 23, 0.85);
  backdrop-filter: blur(10px);
  color: var(--white);
  padding: 1.2rem 2.2rem;
  font-size: 0.9rem;
  letter-spacing: 0.1em;
  font-weight: 600;
  text-transform: uppercase;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
}

.map-overlay-btn:hover {
  background-color: var(--accent);
}

@media (max-width: 992px) {
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 4rem;
  }
  .contact-info-panel {
    padding: 0;
  }
}

/* --- Footer --- */
footer {
  background-color: #171514;
  color: #D6D3D1;
  padding: 5rem 0 3rem 0;
  border-top: 1px solid #292524;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 4rem;
  margin-bottom: 4rem;
}

.footer-brand h3 {
  font-size: 1.8rem;
  color: var(--white);
  margin-bottom: 1rem;
}

.footer-brand p {
  font-size: 0.9rem;
  color: #A8A29E;
  margin-bottom: 2rem;
}

.footer-links-title {
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--white);
  margin-bottom: 1.5rem;
}

.footer-menu {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer-menu a {
  font-size: 0.9rem;
  color: #A8A29E;
}

.footer-menu a:hover {
  color: var(--accent-light);
}

.footer-bottom {
  border-top: 1px solid #292524;
  padding-top: 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
  color: #78716C;
}

@media (max-width: 768px) {
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
  .footer-bottom {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
  }
}

/* --- Animations & Utilities --- */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s ease-out, transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal.active {
  opacity: 1;
  transform: translateY(0);
}

/* Simple helper for screen readers */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}