/* ==========================================================================
   hem.kr — Nordic Architectural Stillness & Horizontal Pinned Scrollytelling
   Design System: Nordic Quiet Luxury + 0px Sharp Orthogonal Architecture
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. Design Tokens & Root Variables
   -------------------------------------------------------------------------- */
:root {
  --radius-base: 0px;
  --max-width: 1320px;
  --header-height: 72px;

  /* Fonts */
  --font-serif: 'Bodoni Moda', 'Playfair Display', Georgia, serif;
  --font-sans: 'Pretendard Variable', 'Pretendard', 'DM Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'SF Mono', Consolas, monospace;

  /* Color Palette (Nordic Quiet Luxury - High Contrast & Readability) */
  --bg-primary: #F7F5F0;               /* Warm Oatmeal Linen Base */
  --bg-surface: #FFFFFF;               /* Paper White */
  --bg-surface-elevated: #EFECE6;      /* Subtle Oatmeal Elevation */
  --text-primary: #121314;             /* Deep Rich Charcoal Ink */
  --text-muted: #333436;               /* High-readability Subdued Secondary Ink */
  --text-subtle: #686763;              /* Crisp Annotations */
  
  --accent-gold: #B8976C;              /* Sand Gold */
  --accent-terracotta: #A3704C;        /* Terracotta Bronze */
  --accent-contrast: #FFFFFF;
  
  --border-light: rgba(23, 24, 26, 0.08);
  --border-medium: rgba(23, 24, 26, 0.16);
  --border-strong: #17181A;

  /* Fluid Typography */
  --text-hero: clamp(3.2rem, 7.5vw, 6.8rem);
  --text-h1: clamp(2.2rem, 5vw, 4.2rem);
  --text-h2: clamp(1.6rem, 3.5vw, 2.75rem);
  --text-h3: clamp(1.125rem, 2vw, 1.5rem);
  --text-body-lg: 1.125rem;
  --text-body: 1rem;
  --text-sm: 0.875rem;
  --text-xs: 0.75rem;
  --text-mono-caps: 0.6875rem;

  --transition-fast: 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-smooth: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

/* --------------------------------------------------------------------------
   2. Reset & Global Setup
   -------------------------------------------------------------------------- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  border-radius: var(--radius-base) !important;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 24px);
  -webkit-text-size-adjust: 100%;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  overflow-x: clip;
}

.hero-wrapper,
.etymology-section,
.pin-track-portals,
.furniture-section,
.matrix-section,
.inquiry-section {
  scroll-margin-top: calc(var(--header-height) + 24px);
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.65;
  font-weight: 450;
  overflow-x: clip;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: inherit;
  text-decoration: none;
}

button, input, textarea, select {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
  background: none;
  border: none;
  outline: none;
}

button {
  cursor: pointer;
}

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 32px;
}

/* --------------------------------------------------------------------------
   3. Header Navigation (Minimalist Architectural)
   -------------------------------------------------------------------------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  background-color: rgba(247, 245, 240, 0.92);
  border-bottom: 1px solid var(--border-light);
  z-index: 1000;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  transition: border-color var(--transition-fast), background-color var(--transition-fast);
}

.site-header.scrolled {
  background-color: rgba(247, 245, 240, 0.98);
  border-bottom-color: var(--border-medium);
}

/* Luxury Dark Section Header Adaptation */
.site-header.theme-dark {
  background-color: rgba(17, 18, 20, 0.95);
  border-bottom-color: rgba(255, 255, 255, 0.12);
}

.site-header.theme-dark .logo-main {
  color: #FFFFFF;
}

.site-header.theme-dark .nav-link-item {
  color: rgba(255, 255, 255, 0.7);
}

.site-header.theme-dark .nav-link-item:hover {
  color: #FFFFFF;
}

.site-header.theme-dark .nav-link-item::after {
  background-color: var(--accent-gold);
}

.site-header.theme-dark .btn-inquire-nav {
  background-color: var(--accent-gold);
  border-color: var(--accent-gold);
  color: #111214;
}

.header-inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand-wordmark {
  display: flex;
  align-items: center;
  gap: 8px;
}

.logo-main {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: var(--text-primary);
  text-transform: uppercase;
}

.logo-tld {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--accent-gold);
  letter-spacing: 0.08em;
  padding: 2px 6px;
  border: 1px solid var(--border-medium);
  background-color: var(--bg-surface);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 24px;
}

.nav-link-item {
  font-family: var(--font-mono);
  font-size: var(--text-mono-caps);
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
  transition: color var(--transition-fast);
  position: relative;
  padding: 4px 0;
}

.nav-link-item:hover {
  color: var(--text-primary);
}

.nav-link-item::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0%;
  height: 1px;
  background-color: var(--text-primary);
  transition: width var(--transition-fast);
}

.nav-link-item:hover::after {
  width: 100%;
}

.btn-inquire-nav {
  font-family: var(--font-mono);
  font-size: var(--text-mono-caps);
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 10px 20px;
  background-color: var(--text-primary);
  color: #FFFFFF;
  border: 1px solid var(--text-primary);
  transition: all var(--transition-fast);
}

.btn-inquire-nav:hover {
  background-color: var(--accent-gold);
  border-color: var(--accent-gold);
  transform: translateY(-1px);
}

/* --------------------------------------------------------------------------
   4. Hero Section (Rock-Solid Initial Paint)
   -------------------------------------------------------------------------- */
.hero-wrapper {
  position: relative;
  min-height: 100vh;
  padding-top: calc(var(--header-height) + 40px);
  padding-bottom: 80px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.hero-backdrop-image {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: url('assets/hero-livingroom.jpg');
  background-size: cover;
  background-position: center 35%;
  filter: brightness(0.92) contrast(1.02);
  z-index: 1;
}

.hero-overlay-gradient {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    180deg,
    rgba(247, 245, 240, 0.45) 0%,
    rgba(247, 245, 240, 0.88) 60%,
    rgba(247, 245, 240, 1) 100%
  );
  z-index: 2;
}

.hero-content {
  position: relative;
  z-index: 3;
  text-align: center;
  max-width: 1040px;
  margin: 0 auto;
}

.badge-meta {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: var(--text-mono-caps);
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  padding: 8px 16px;
  background-color: rgba(255, 255, 255, 0.9);
  border: 1px solid var(--border-medium);
  color: var(--text-primary);
  margin-bottom: 24px;
  backdrop-filter: blur(8px);
}

.badge-meta .dot-live {
  width: 6px;
  height: 6px;
  background-color: var(--accent-gold);
  display: inline-block;
}

.hero-title-monolith {
  font-family: var(--font-serif);
  font-size: var(--text-hero);
  font-weight: 700;
  letter-spacing: 0.12em;
  line-height: 1.05;
  color: var(--text-primary);
  text-transform: uppercase;
  margin-bottom: 20px;
  font-optical-sizing: auto;
}

.hero-title-monolith .dot-gold {
  color: var(--accent-gold);
}

.hero-tagline-serif {
  font-family: var(--font-serif);
  font-size: var(--text-h3);
  font-style: italic;
  color: var(--accent-terracotta);
  letter-spacing: 0.04em;
  margin-bottom: 20px;
  line-height: 1.3;
}

.hero-description-korean {
  font-size: var(--text-body-lg);
  color: var(--text-muted);
  max-width: 760px;
  margin: 0 auto 40px auto;
  line-height: 1.8;
  font-weight: 400;
}

.hero-specs-strip {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 48px;
}

.spec-pill {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background-color: rgba(255, 255, 255, 0.85);
  border: 1px solid var(--border-light);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--text-muted);
}

.spec-pill strong {
  color: var(--text-primary);
}

.hero-actions {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

.btn-hero-primary {
  padding: 18px 40px;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  background-color: var(--text-primary);
  color: #FFFFFF;
  border: 1px solid var(--text-primary);
  transition: background-color var(--transition-fast), transform var(--transition-fast);
  display: inline-flex;
  align-items: center;
  gap: 12px;
}

.btn-hero-primary:hover {
  background-color: var(--accent-gold);
  border-color: var(--accent-gold);
  transform: translateY(-2px);
}

.btn-hero-secondary {
  padding: 18px 40px;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  background-color: rgba(255, 255, 255, 0.9);
  color: var(--text-primary);
  border: 1px solid var(--border-medium);
  transition: border-color var(--transition-fast), transform var(--transition-fast), background-color var(--transition-fast);
  display: inline-flex;
  align-items: center;
  gap: 12px;
}

.btn-hero-secondary:hover {
  border-color: var(--text-primary);
  background-color: #FFFFFF;
  transform: translateY(-2px);
}

/* --------------------------------------------------------------------------
   5. DUAL ETYMOLOGY (Smooth Flowing Architectural Section)
   -------------------------------------------------------------------------- */
.etymology-section {
  padding: 128px 0;
  background-color: var(--bg-primary);
  border-top: 1px solid var(--border-light);
  border-bottom: 1px solid var(--border-light);
}

.etymology-header-pin {
  text-align: center;
  margin-bottom: 56px;
}

.section-label-mono {
  font-family: var(--font-mono);
  font-size: var(--text-mono-caps);
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent-gold);
  margin-bottom: 12px;
}

.section-title-serif {
  font-family: var(--font-serif);
  font-size: var(--text-h2);
  font-weight: 400;
  line-height: 1.25;
  color: var(--text-primary);
  margin-bottom: 12px;
}

.section-desc-light {
  font-size: var(--text-sm);
  color: var(--text-muted);
  max-width: 680px;
  margin: 0 auto;
  word-break: keep-all;
}

.etymology-cards-stage {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 36px;
}

.etymology-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-medium);
  padding: 48px;
  text-align: left;
  position: relative;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.03);
  transition: transform var(--transition-fast), border-color var(--transition-fast);
}

.etymology-card:hover {
  transform: translateY(-4px);
  border-color: var(--text-primary);
}

.etymology-tag {
  font-family: var(--font-mono);
  font-size: var(--text-mono-caps);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-gold);
  margin-bottom: 16px;
}

.etymology-head {
  font-family: var(--font-serif);
  font-size: 2.4rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.etymology-phonetic {
  font-family: var(--font-mono);
  font-size: 1rem;
  font-weight: 400;
  color: var(--text-subtle);
  margin-left: 6px;
}

.etymology-meaning {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--accent-terracotta);
  margin-bottom: 16px;
}

.etymology-body {
  font-size: var(--text-sm);
  color: var(--text-muted);
  line-height: 1.75;
  margin-bottom: 24px;
}

.etymology-line-art {
  height: 64px;
  border: 1px dashed var(--border-medium);
  background-color: var(--bg-surface-elevated);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--text-subtle);
}

/* --------------------------------------------------------------------------
   6. [THE STAR PINNED SHOWCASE] 4 LIVING PORTALS HORIZONTAL GLIDE (280vh)
   -------------------------------------------------------------------------- */
.pin-track-portals {
  height: 280vh;
  position: relative;
  background-color: #111214;
  color: #FFFFFF;
}

.sticky-viewport-portals {
  position: sticky;
  top: 0;
  height: 100vh;
  width: 100%;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

/* Sticky Viewport Header HUD */
.portals-pinned-header {
  position: absolute;
  top: var(--header-height);
  left: 0;
  width: 100%;
  padding: 18px 48px;
  z-index: 30;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: linear-gradient(180deg, rgba(17, 18, 20, 0.95) 0%, rgba(17, 18, 20, 0) 100%);
}

.portal-hud-left .section-label-mono {
  color: var(--accent-gold);
}

.portal-hud-right {
  display: flex;
  align-items: center;
  gap: 20px;
}

.portal-nav-arrows {
  display: flex;
  gap: 8px;
}

.btn-portal-arrow {
  padding: 6px 14px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: #FFFFFF;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  background-color: rgba(255, 255, 255, 0.05);
  transition: all var(--transition-fast);
}

.btn-portal-arrow:hover {
  background-color: var(--accent-gold);
  border-color: var(--accent-gold);
}

.live-scroll-text {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--accent-gold);
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.live-scroll-bar-bg {
  width: 100px;
  height: 3px;
  background-color: rgba(255, 255, 255, 0.2);
  position: relative;
  overflow: hidden;
}

.live-scroll-bar-fill {
  height: 100%;
  width: 0%;
  background-color: var(--accent-gold);
}

/* Horizontal Sliding Stage */
.horizontal-portals-track {
  display: flex;
  width: max-content;
  height: 100%;
  will-change: transform;
  padding-left: 6vw;
  transition: transform 0.08s ease-out;
}

.horizontal-portal-slide {
  width: 78vw;
  max-width: 1100px;
  height: 70vh;
  margin: auto 24px;
  position: relative;
  background-size: cover;
  background-position: center;
  border: 1px solid rgba(255, 255, 255, 0.18);
  box-shadow: 0 32px 72px rgba(0, 0, 0, 0.7);
  flex-shrink: 0;
  display: flex;
  align-items: flex-end;
  overflow: hidden;
}

.slide-backdrop-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    180deg,
    rgba(17, 18, 20, 0.15) 0%,
    rgba(17, 18, 20, 0.65) 45%,
    rgba(17, 18, 20, 0.95) 100%
  );
  z-index: 1;
}

.slide-number-watermark {
  position: absolute;
  top: 24px;
  right: 32px;
  font-family: var(--font-serif);
  font-size: 5rem;
  font-weight: 700;
  color: rgba(255, 255, 255, 0.12);
  line-height: 1;
  z-index: 2;
  user-select: none;
}

.slide-content-box {
  position: relative;
  z-index: 3;
  padding: 48px;
  width: 100%;
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 40px;
  align-items: flex-end;
}

.slide-category-badge {
  font-family: var(--font-mono);
  font-size: var(--text-mono-caps);
  font-weight: 700;
  letter-spacing: 0.18em;
  color: var(--accent-gold);
  text-transform: uppercase;
  margin-bottom: 12px;
}

.slide-heading {
  font-family: var(--font-serif);
  font-size: var(--text-h1);
  font-weight: 400;
  color: #FFFFFF;
  line-height: 1.1;
  margin-bottom: 12px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.slide-slogan {
  font-family: var(--font-serif);
  font-size: var(--text-h3);
  font-style: italic;
  color: var(--accent-gold);
  margin-bottom: 16px;
}

.slide-desc {
  font-size: var(--text-sm);
  color: rgba(255, 255, 255, 0.85);
  line-height: 1.7;
}

.slide-curation-panel {
  background-color: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  padding: 28px;
}

.slide-spec-list {
  list-style: none;
  font-size: var(--text-xs);
  color: rgba(255, 255, 255, 0.85);
  line-height: 2;
  margin-bottom: 20px;
}

.slide-spec-list li {
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  padding: 4px 0;
  display: flex;
  justify-content: space-between;
}

.slide-spec-list li span:first-child {
  color: rgba(255, 255, 255, 0.5);
  font-family: var(--font-mono);
}

.btn-slide-action {
  width: 100%;
  padding: 14px;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  background-color: #FFFFFF;
  color: #17181A;
  border: 1px solid #FFFFFF;
  text-align: center;
  transition: background-color var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
}

.btn-slide-action:hover {
  background-color: var(--accent-gold);
  border-color: var(--accent-gold);
  color: #FFFFFF;
}

/* Bottom Timeline HUD */
.portal-timeline-hud {
  position: absolute;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 30;
  display: flex;
  align-items: center;
  gap: 16px;
  background-color: rgba(17, 18, 20, 0.85);
  padding: 8px 24px;
  border: 1px solid rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(16px);
}

.timeline-dot-btn {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: rgba(255, 255, 255, 0.4);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  transition: color var(--transition-fast);
  display: flex;
  align-items: center;
  gap: 8px;
}

.timeline-dot-btn.active {
  color: var(--accent-gold);
  font-weight: 700;
}

.timeline-dot-btn .bar-segment {
  width: 20px;
  height: 2px;
  background-color: rgba(255, 255, 255, 0.2);
  display: inline-block;
  transition: background-color var(--transition-fast);
}

.timeline-dot-btn.active .bar-segment {
  background-color: var(--accent-gold);
}

/* --------------------------------------------------------------------------
   7. Curated Furniture Collection (Showcase Grid)
   -------------------------------------------------------------------------- */
.furniture-section {
  padding: 128px 0;
  background-color: var(--bg-primary);
  border-top: 1px solid var(--border-light);
}

.section-head-center {
  text-align: center;
  margin-bottom: 64px;
}

.furniture-grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.furniture-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-medium);
  padding: 36px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: transform var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.furniture-card:hover {
  border-color: var(--text-primary);
  transform: translateY(-4px);
  box-shadow: 0 20px 48px rgba(0, 0, 0, 0.04);
}

.furniture-img-placeholder {
  height: 220px;
  background-color: var(--bg-surface-elevated);
  border: 1px solid var(--border-light);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
  position: relative;
  overflow: hidden;
}

.furniture-card-tag {
  font-family: var(--font-mono);
  font-size: var(--text-mono-caps);
  color: var(--accent-terracotta);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 8px;
}

.furniture-card-title {
  font-family: var(--font-serif);
  font-size: var(--text-h3);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 12px;
}

.furniture-card-desc {
  font-size: var(--text-sm);
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 24px;
}

.furniture-card-spec {
  border-top: 1px solid var(--border-light);
  padding-top: 16px;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--text-subtle);
  display: flex;
  justify-content: space-between;
}

/* --------------------------------------------------------------------------
   8. Domain Asset Value Matrix
   -------------------------------------------------------------------------- */
.matrix-section {
  padding: 128px 0;
  background-color: var(--bg-surface);
  border-top: 1px solid var(--border-light);
  border-bottom: 1px solid var(--border-light);
}

.matrix-grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.matrix-item {
  border: 1px solid var(--border-medium);
  padding: 40px 24px;
  text-align: center;
  background-color: var(--bg-primary);
  transition: border-color var(--transition-fast), background-color var(--transition-fast);
}

.matrix-item:hover {
  border-color: var(--text-primary);
  background-color: #FFFFFF;
}

.matrix-num {
  font-family: var(--font-serif);
  font-size: 3.5rem;
  font-weight: 400;
  color: var(--accent-gold);
  line-height: 1;
  margin-bottom: 16px;
}

.matrix-label {
  font-family: var(--font-sans);
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.matrix-sub {
  font-size: var(--text-xs);
  color: var(--text-muted);
  line-height: 1.6;
}

/* --------------------------------------------------------------------------
   9. Executive Acquisition Section & Inquiry Box
   -------------------------------------------------------------------------- */
.inquiry-section {
  padding: 128px 0;
  background-color: var(--bg-primary);
}

.inquiry-card-monograph {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-strong);
  padding: 64px;
  max-width: 860px;
  margin: 0 auto;
}

.form-group-minimal {
  margin-bottom: 24px;
}

.form-label-mono {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--text-mono-caps);
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.form-input-line,
.form-select-line,
.form-textarea-line {
  width: 100%;
  padding: 12px 8px;
  background: transparent;
  border-bottom: 1px solid var(--border-medium);
  font-size: var(--text-sm);
  color: var(--text-primary);
  transition: border-color var(--transition-fast), background-color var(--transition-fast);
}

.form-input-line:focus,
.form-select-line:focus,
.form-textarea-line:focus {
  border-bottom-color: var(--text-primary);
  background-color: var(--bg-surface-elevated);
}

.form-input-line.has-error,
.form-textarea-line.has-error {
  border-bottom-color: #DC2626 !important;
  background-color: rgba(220, 38, 38, 0.05) !important;
}

.field-error-msg {
  display: none;
  font-family: var(--font-mono);
  font-size: var(--text-mono-caps);
  font-weight: 600;
  color: #DC2626;
  margin-top: 6px;
  letter-spacing: 0.02em;
}

.field-error-msg.visible {
  display: block;
  animation: fadeInError 0.2s ease-out;
}

@keyframes fadeInError {
  from { opacity: 0; transform: translateY(-2px); }
  to { opacity: 1; transform: translateY(0); }
}

.form-global-error {
  display: none;
  background-color: rgba(220, 38, 38, 0.06);
  border: 1px solid #DC2626;
  color: #B91C1C;
  padding: 14px 18px;
  font-size: var(--text-xs);
  font-family: var(--font-mono);
  font-weight: 500;
  margin-bottom: 20px;
  line-height: 1.5;
}

.form-global-error.visible {
  display: block;
  animation: fadeInError 0.2s ease-out;
}

.form-textarea-line {
  min-height: 100px;
  resize: vertical;
}

.form-grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.btn-submit-inquiry {
  width: 100%;
  padding: 20px;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  background-color: var(--text-primary);
  color: #FFFFFF;
  border: 1px solid var(--text-primary);
  transition: background-color var(--transition-fast), border-color var(--transition-fast);
  margin-top: 20px;
  cursor: pointer;
}

.btn-submit-inquiry:hover {
  background-color: var(--accent-gold);
  border-color: var(--accent-gold);
}

/* --------------------------------------------------------------------------
   10. Footer
   -------------------------------------------------------------------------- */
.site-footer {
  border-top: 1px solid var(--border-light);
  background-color: var(--bg-surface);
  padding: 80px 0 40px 0;
}

.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 64px;
}

.footer-brand .logo-main {
  font-size: 1.5rem;
  margin-bottom: 12px;
  display: inline-block;
}

.footer-brand p {
  font-size: var(--text-sm);
  color: var(--text-muted);
  line-height: 1.8;
  max-width: 440px;
  word-break: keep-all;
}

.footer-col h5 {
  font-family: var(--font-mono);
  font-size: var(--text-mono-caps);
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-primary);
  margin-bottom: 20px;
}

.footer-col ul {
  list-style: none;
}

.footer-col ul li {
  margin-bottom: 12px;
}

.footer-col ul li a,
.footer-col ul li button {
  font-size: var(--text-xs);
  color: var(--text-muted);
  transition: color var(--transition-fast);
}

.footer-col ul li a:hover,
.footer-col ul li button:hover {
  color: var(--accent-gold);
}

.footer-bottom {
  padding-top: 32px;
  border-top: 1px solid var(--border-light);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--text-subtle);
  flex-wrap: wrap;
  gap: 16px;
}

/* --------------------------------------------------------------------------
   11. Modals & Custom Success View (buz.kr Standard)
   -------------------------------------------------------------------------- */
.modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-color: rgba(23, 24, 26, 0.75);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.modal-backdrop.active {
  opacity: 1;
  pointer-events: auto;
}

.modal-dialog {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-strong);
  width: 100%;
  max-width: 680px;
  max-height: 90vh;
  overflow-y: auto;
  padding: 48px;
  position: relative;
  box-shadow: 0 32px 64px rgba(0, 0, 0, 0.25);
}

.modal-close-btn {
  position: absolute;
  top: 24px;
  right: 24px;
  font-size: 1.25rem;
  color: var(--text-muted);
  padding: 4px 8px;
  border: 1px solid var(--border-medium);
  transition: color var(--transition-fast), border-color var(--transition-fast);
  cursor: pointer;
  z-index: 10;
}

.modal-close-btn:hover {
  color: var(--text-primary);
  border-color: var(--text-primary);
}

/* Modal Success View (Custom Confirmation Popup) */
.modal-success-view {
  text-align: center;
  padding: 24px 12px 12px;
  animation: fadeInSuccess 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes fadeInSuccess {
  from { opacity: 0; transform: scale(0.96); }
  to { opacity: 1; transform: scale(1); }
}

.success-icon-box {
  width: 64px;
  height: 64px;
  background-color: var(--accent-gold);
  border: 1px solid var(--text-primary);
  margin: 0 auto 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #FFFFFF;
}

.success-check-svg {
  width: 32px;
  height: 32px;
  stroke: #FFFFFF;
}

.modal-title-serif {
  font-family: var(--font-serif);
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 12px;
}

.modal-desc-korean {
  font-size: var(--text-sm);
  color: var(--text-muted);
  line-height: 1.7;
  max-width: 480px;
  margin: 0 auto;
}

.btn-success-close-action {
  width: 100%;
  padding: 16px;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  background-color: var(--text-primary);
  color: #FFFFFF;
  border: 1px solid var(--text-primary);
  transition: all var(--transition-fast);
  margin-top: 28px;
  cursor: pointer;
}

.btn-success-close-action:hover {
  background-color: var(--accent-gold);
  border-color: var(--accent-gold);
}

/* --------------------------------------------------------------------------
   12. Responsive Breakpoints
   -------------------------------------------------------------------------- */
@media (max-width: 1024px) {
  .etymology-cards-stage {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .slide-content-box {
    grid-template-columns: 1fr;
    gap: 20px;
    padding: 32px 24px;
  }
  .slide-curation-panel {
    display: block;
    background: transparent;
    border: none;
    padding: 0;
    backdrop-filter: none;
  }
  .slide-spec-list {
    display: none; /* Hide dense specs on tablet/mobile to keep layout compact */
  }
  .btn-slide-action {
    width: 100%;
    padding: 14px 20px;
    text-align: center;
  }
  .furniture-grid-3 {
    grid-template-columns: 1fr;
  }
  .matrix-grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-top {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  :root {
    --text-hero: clamp(2.8rem, 11vw, 4.2rem);
    --text-h1: clamp(1.8rem, 7vw, 2.6rem);
    --text-h2: clamp(1.4rem, 5.5vw, 2rem);
    --text-h3: 1.25rem;
    --text-body-lg: 1.1rem;
    --text-body: 1.02rem;
    --text-sm: 0.9375rem;         /* 15px */
    --text-xs: 0.84375rem;        /* 13.5px */
    --text-mono-caps: 0.78125rem; /* 12.5px */
  }

  html {
    scroll-padding-top: 68px;
  }

  .hero-wrapper,
  .etymology-section,
  .pin-track-portals,
  .furniture-section,
  .matrix-section,
  .inquiry-section {
    scroll-margin-top: 68px;
  }

  body {
    font-weight: 500;
    line-height: 1.7;
  }

  .hero-description-korean {
    font-size: 1.05rem;
    line-height: 1.75;
    font-weight: 500;
  }

  .section-desc-light {
    font-size: 0.95rem;
    line-height: 1.7;
    font-weight: 500;
  }

  .etymology-body {
    font-size: 0.95rem;
    line-height: 1.75;
    font-weight: 500;
  }

  .slide-desc {
    font-size: 0.95rem;
    line-height: 1.7;
    font-weight: 500;
  }

  .furniture-card-desc {
    font-size: 0.9375rem;
    line-height: 1.7;
    font-weight: 500;
  }

  .matrix-sub {
    font-size: 0.84375rem;
    font-weight: 500;
    line-height: 1.6;
  }

  .badge-meta, .spec-pill, .form-label-mono, .section-label-mono, .etymology-tag {
    font-size: 0.8rem;
    font-weight: 600;
  }

  /* Streamlined 1-row Mobile Header */
  .site-header {
    height: 56px;
    padding: 0;
  }
  .header-inner {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    height: 100%;
    padding: 0 20px;
  }
  .nav-links {
    display: none;
  }
  .btn-inquire-nav {
    padding: 8px 16px;
    font-size: 0.6875rem;
  }
  .hero-wrapper {
    padding-top: 96px;
  }
  .portals-pinned-header {
    top: 56px;
    padding: 12px 16px;
    background: linear-gradient(180deg, rgba(17, 18, 20, 0.98) 0%, rgba(17, 18, 20, 0) 100%);
  }
  .horizontal-portal-slide {
    width: 90vw;
    height: 66vh;
    margin: auto 12px;
  }
  .portal-timeline-hud {
    display: none;
  }
  .form-grid-2 {
    grid-template-columns: 1fr;
  }
  .matrix-grid-4 {
    grid-template-columns: 1fr;
  }
  .footer-top {
    grid-template-columns: 1fr;
  }
  .modal-dialog {
    padding: 32px 20px;
  }
}