/* ============================================
   Hanryu Beauty & SPA — Black & Gold
   럭셔리 · 모던
   ============================================ */

:root {
  --black: #0a0a0a;
  --black-soft: #111111;
  --black-card: #161616;
  --black-border: #252525;
  --gold: #c9a227;
  --gold-light: #d4af37;
  --gold-bright: #e5c76b;
  --gold-muted: rgba(201, 162, 39, 0.6);
  --white: #fafafa;
  --white-muted: rgba(250, 250, 250, 0.7);
  --white-dim: rgba(250, 250, 250, 0.5);

  --font-serif: "Cormorant Garamond", Georgia, serif;
  --font-sans: "DM Sans", -apple-system, BlinkMacSystemFont, sans-serif;

  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2rem;
  --space-xl: 3rem;
  --space-2xl: 4rem;
  --space-3xl: 5rem;
  --space-4xl: 7rem;

  --radius: 4px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-weight: 400;
  font-size: 1rem;
  line-height: 1.65;
  color: var(--white);
  background-color: var(--black);
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--gold);
  text-decoration: none;
  transition: color var(--transition);
}
a:hover {
  color: var(--gold-bright);
}

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

.container {
  width: 100%;
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

/* ----- Header ----- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(10, 10, 10, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--black-border);
  transition: border-color var(--transition), background var(--transition);
}
.header.scrolled {
  border-bottom-color: rgba(201, 162, 39, 0.2);
}

.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--space-md) var(--space-lg);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 500;
  color: var(--white);
  letter-spacing: 0.02em;
}
.logo-accent {
  color: var(--gold);
  font-weight: 400;
}

.nav-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  align-items: center;
  gap: var(--space-xl);
}
.nav-list a {
  font-weight: 500;
  font-size: 0.9rem;
  letter-spacing: 0.04em;
  color: var(--white-muted);
  text-transform: uppercase;
}
.nav-list a:hover {
  color: var(--gold);
}

.menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 6px;
  width: 44px;
  height: 44px;
  padding: 0;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--white);
}
.menu-toggle span {
  display: block;
  width: 22px;
  height: 1.5px;
  background: currentColor;
  transition: transform 0.25s ease, opacity 0.25s ease;
}
.menu-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7.5px) rotate(45deg);
}
.menu-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}
.menu-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7.5px) rotate(-45deg);
}

/* ----- Buttons ----- */
.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: 0.85rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  text-align: center;
  border: 1px solid transparent;
  transition: background var(--transition), color var(--transition), border-color var(--transition);
}
.btn-primary {
  background: var(--gold);
  color: var(--black);
  border-color: var(--gold);
}
.btn-primary:hover {
  background: var(--gold-bright);
  color: var(--black);
  border-color: var(--gold-bright);
}
.btn-hero {
  background: transparent;
  color: var(--gold);
  border: 1px solid var(--gold);
  padding: 1rem 2.25rem;
  font-size: 0.8rem;
}
.btn-hero:hover {
  background: var(--gold);
  color: var(--black);
}
.btn-large {
  padding: 1.1rem 2.5rem;
  font-size: 0.85rem;
}

/* ----- Hero ----- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-4xl) var(--space-lg);
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background: var(--black);
  background-image: url("https://images.unsplash.com/photo-1544161515-4ab6d6bd5563?w=1920&q=85");
  background-size: cover;
  background-position: center;
}
.hero-bg::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(10, 10, 10, 0.25) 0%, rgba(10, 10, 10, 0.5) 50%, rgba(10, 10, 10, 0.78) 100%);
  pointer-events: none;
}
.hero-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 70% 40% at 50% 60%, rgba(201, 162, 39, 0.08) 0%, transparent 55%);
  pointer-events: none;
}
.hero-bg-line {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--gold-muted), transparent);
  opacity: 0.6;
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
}

.hero-label {
  font-size: 0.75rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--gold);
  margin: 0 0 var(--space-md);
  font-weight: 500;
}

.hero-title {
  font-family: var(--font-serif);
  font-size: clamp(2.75rem, 7vw, 4.5rem);
  font-weight: 400;
  line-height: 1.1;
  margin: 0 0 var(--space-lg);
  letter-spacing: 0.02em;
  color: var(--white);
}

.hero-desc {
  font-size: 1.05rem;
  font-weight: 300;
  max-width: 440px;
  margin: 0 auto var(--space-2xl);
  color: var(--white-muted);
  letter-spacing: 0.01em;
}

/* ----- Sections ----- */
.section {
  padding: var(--space-4xl) 0;
}

.section-healing {
  position: relative;
  border-top: 1px solid var(--black-border);
  background-color: var(--black-soft);
  background-image: url("https://images.unsplash.com/photo-1540555700478-4be289fbecef?w=1920&q=80");
  background-size: cover;
  background-position: center;
  background-attachment: scroll;
}
.section-healing::before {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(10, 10, 10, 0.88);
  z-index: 0;
}
.section-healing .container {
  position: relative;
  z-index: 1;
}

.section-title {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 4.5vw, 2.75rem);
  font-weight: 400;
  color: var(--white);
  margin: 0 0 var(--space-md);
  text-align: center;
  letter-spacing: 0.02em;
}

.section-lead {
  max-width: 600px;
  margin: 0 auto var(--space-lg);
  text-align: center;
  color: var(--white-muted);
  font-size: 1.05rem;
  font-weight: 300;
}

.section-subtitle {
  text-align: center;
  color: var(--gold-muted);
  margin: -0.25rem 0 var(--space-xl);
  font-size: 0.9rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.link-signature {
  display: inline-block;
  margin: 0 auto;
  font-weight: 500;
  font-size: 0.85rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--gold);
  border-bottom: 1px solid var(--gold);
  padding-bottom: 3px;
  transition: color var(--transition), border-color var(--transition);
}
.link-signature:hover {
  color: var(--gold-bright);
  border-color: var(--gold-bright);
}

.section-healing .container {
  text-align: center;
}

/* ----- Services ----- */
.section-services {
  background: var(--black);
  border-top: 1px solid var(--black-border);
}

.services-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: var(--space-lg);
  margin-top: var(--space-2xl);
}

.service-card {
  background: var(--black-card);
  border: 1px solid var(--black-border);
  overflow: hidden;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.service-card:hover {
  border-color: rgba(201, 162, 39, 0.4);
  box-shadow: 0 0 0 1px rgba(201, 162, 39, 0.15);
}

.service-card-img {
  position: relative;
  height: 160px;
  overflow: hidden;
  background-color: var(--black-border);
}
.service-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform var(--transition);
}
.service-card:hover .service-card-img img {
  transform: scale(1.04);
}
.service-card-body {
  padding: var(--space-lg) var(--space-xl) var(--space-xl);
}

.service-card h3 {
  font-family: var(--font-serif);
  font-size: 1.4rem;
  font-weight: 400;
  color: var(--gold);
  margin: 0 0 var(--space-xs);
  letter-spacing: 0.02em;
}
.service-card p {
  color: var(--white-muted);
  margin: 0 0 var(--space-sm);
  font-size: 0.92rem;
  font-weight: 300;
}

/* ----- Quote ----- */
.section-quote {
  position: relative;
  padding: var(--space-3xl) 0;
  border-top: 1px solid var(--black-border);
  border-bottom: 1px solid var(--black-border);
  background-color: var(--black-soft);
  background-image: url("https://images.unsplash.com/photo-1601924994987-69e26e50f46f?w=1920&q=80");
  background-size: cover;
  background-position: center;
  background-attachment: scroll;
}
.section-quote::before {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(10, 10, 10, 0.82);
  z-index: 0;
}
.section-quote .container {
  position: relative;
  z-index: 1;
}

.quote {
  font-family: var(--font-serif);
  font-size: clamp(1.5rem, 3.5vw, 2rem);
  font-style: italic;
  font-weight: 400;
  text-align: center;
  margin: 0;
  max-width: 580px;
  margin: 0 auto;
  color: var(--white-muted);
}

/* ----- Approach ----- */
.section-approach {
  background: var(--black);
}

.approach-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-xl);
  margin-top: var(--space-2xl);
}

.approach-card {
  text-align: center;
  padding: var(--space-xl);
  border: 1px solid transparent;
  border-top: 1px solid var(--black-border);
  transition: border-color var(--transition);
}
.approach-card:hover {
  border-top-color: var(--gold-muted);
}
.approach-card h3 {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 400;
  color: var(--gold);
  margin: 0 0 var(--space-sm);
  letter-spacing: 0.02em;
}
.approach-card p {
  color: var(--white-muted);
  margin: 0;
  font-size: 0.95rem;
  font-weight: 300;
}

/* ----- Visit ----- */
.section-visit {
  background: var(--black-soft);
  border-top: 1px solid var(--black-border);
}

.visit-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--space-xl);
  margin-top: var(--space-2xl);
}

.visit-item {
  padding: var(--space-lg) 0;
  border-bottom: 1px solid var(--black-border);
}
.visit-item:last-child {
  border-bottom: none;
}
.visit-item h3 {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  color: var(--gold);
  margin: 0 0 var(--space-sm);
  text-transform: uppercase;
}
.visit-item p {
  margin: 0;
  color: var(--white-muted);
  font-size: 0.95rem;
  font-weight: 300;
}
.visit-item a {
  color: var(--white);
}
.visit-item a:hover {
  color: var(--gold);
}

/* ----- Book ----- */
.section-book {
  position: relative;
  text-align: center;
  border-top: 1px solid var(--gold-muted);
  padding: var(--space-4xl) 0;
  background-color: var(--black);
  background-image: url("https://images.unsplash.com/photo-1600334129122-6855585084ea?w=1920&q=80");
  background-size: cover;
  background-position: center;
}
.section-book::before {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(10, 10, 10, 0.85);
  z-index: 0;
}
.section-book .container {
  position: relative;
  z-index: 1;
}

.section-book .section-title {
  color: var(--white);
}
.section-book .section-lead {
  color: var(--white-muted);
  margin-bottom: var(--space-2xl);
}

.section-book .btn-primary {
  background: var(--gold);
  color: var(--black);
  border-color: var(--gold);
}
.section-book .btn-primary:hover {
  background: var(--gold-bright);
  border-color: var(--gold-bright);
  color: var(--black);
}

.book-note {
  margin: var(--space-lg) 0 0;
  font-size: 0.85rem;
  color: var(--white-dim);
  letter-spacing: 0.02em;
}

/* ----- Footer ----- */
.footer {
  background: var(--black-soft);
  color: var(--white-muted);
  padding: var(--space-xl) 0;
  text-align: center;
  border-top: 1px solid var(--black-border);
}

.footer-brand {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  color: var(--white);
  margin: 0 0 var(--space-xs);
}
.footer-copy {
  margin: 0;
  font-size: 0.8rem;
  color: var(--white-dim);
  letter-spacing: 0.02em;
}

/* ----- Mobile ----- */
@media (max-width: 768px) {
  .nav {
    position: fixed;
    top: 0;
    right: 0;
    width: min(300px, 85vw);
    height: 100vh;
    background: var(--black-soft);
    padding: var(--space-3xl) var(--space-xl);
    border-left: 1px solid var(--black-border);
    box-shadow: -8px 0 32px rgba(0, 0, 0, 0.5);
    transform: translateX(100%);
    transition: transform var(--transition);
    z-index: 99;
  }
  .nav.is-open {
    transform: translateX(0);
  }
  .nav-list {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-lg);
  }
  .nav-list a {
    font-size: 1rem;
  }
  .nav .btn-primary {
    margin-top: var(--space-md);
  }
  .menu-toggle {
    display: flex;
    z-index: 101;
  }

  .section {
    padding: var(--space-3xl) 0;
  }
  .services-grid {
    grid-template-columns: 1fr;
  }
  .visit-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 2.25rem;
  }
  .container {
    padding: 0 var(--space-md);
  }
}