@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+KR:wght@300;400;500;700&family=Noto+Serif+KR:wght@300;400;600;700&display=swap');

/* Style System & Variables */
:root {
  --bg-dark: #0c0c0d;
  --bg-card: #151517;
  --bg-light: #f6f5f2;
  --bg-light-card: #ffffff;
  
  --primary-gold: #c5a880;
  --primary-gold-hover: #b3946d;
  --primary-gold-light: rgba(197, 168, 128, 0.15);
  
  --text-light: #f7f6f3;
  --text-dark: #1c1c1e;
  --text-muted-light: #a0a0a5;
  --text-muted-dark: #636366;
  
  --border-light: rgba(197, 168, 128, 0.3);
  --border-dark: rgba(28, 28, 30, 0.1);
  
  --font-serif: 'Noto Serif KR', serif;
  --font-sans: 'Noto Sans KR', sans-serif;
  --transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-slow: all 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Base Styles */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-font-smoothing: antialiased;
}

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

body {
  font-family: var(--font-sans);
  background-color: var(--bg-dark);
  color: var(--text-light);
  line-height: 1.6;
  overflow-x: hidden;
}

h1, h2, h3, h4, .serif-text {
  font-family: var(--font-serif);
  font-weight: 600;
  letter-spacing: -0.03em;
}

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

button, input, select, textarea {
  font-family: inherit;
}

/* Common UI Elements */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.section-padding {
  padding: 8rem 0;
}

.gold-text {
  color: var(--primary-gold);
}

.text-center {
  text-align: center;
}

/* Animations */
.fade-in-up {
  opacity: 0;
  transform: translateY(30px);
  transition: var(--transition-slow);
}

.fade-in-up.active {
  opacity: 1;
  transform: translateY(0);
}

/* GNB Navigation */
header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  transition: var(--transition);
  border-bottom: 1px solid rgba(255, 255, 255, 0.03);
}

header.scrolled {
  background-color: rgba(12, 12, 13, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  padding: 0.5rem 0;
  border-bottom: 1px solid rgba(197, 168, 128, 0.15);
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 80px;
  transition: var(--transition);
}

header.scrolled .nav-container {
  height: 64px;
}

.logo-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.logo-img {
  height: 36px;
  width: auto;
  object-fit: contain;
}

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

.logo-subtext {
  font-size: 0.7rem;
  color: var(--primary-gold);
  letter-spacing: 0.2em;
  display: block;
}

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

.nav-link {
  font-size: 0.95rem;
  font-weight: 400;
  color: var(--text-muted-light);
  letter-spacing: 0.05em;
  position: relative;
  padding: 0.5rem 0;
}

.nav-link:hover, .nav-link.active {
  color: var(--text-light);
}

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

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

.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.nav-cta {
  background-color: transparent;
  color: var(--primary-gold);
  border: 1px solid var(--primary-gold);
  padding: 0.6rem 1.2rem;
  border-radius: 2px;
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  cursor: pointer;
  transition: var(--transition);
}

.nav-cta:hover {
  background-color: var(--primary-gold);
  color: var(--bg-dark);
  box-shadow: 0 0 15px rgba(197, 168, 128, 0.3);
}

/* Mobile Menu Toggle */
.menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 24px;
  height: 18px;
  background: transparent;
  border: none;
  cursor: pointer;
  z-index: 1001;
}

.menu-toggle span {
  width: 100%;
  height: 2px;
  background-color: var(--text-light);
  transition: var(--transition);
}

/* Hero Section */
.hero-section {
  position: relative;
  height: 100vh;
  min-height: 700px;
  display: flex;
  align-items: center;
  overflow: hidden;
  background-color: #000;
}

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

.hero-video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    to bottom,
    rgba(12, 12, 13, 0.4) 0%,
    rgba(12, 12, 13, 0.7) 60%,
    rgba(12, 12, 13, 0.95) 100%
  );
  z-index: 2;
}

.hero-content {
  position: relative;
  z-index: 3;
  width: 100%;
  margin-top: 60px;
}

.hero-title-wrap {
  max-width: 800px;
  margin: 0 auto;
}

.hero-tagline {
  font-size: 1.1rem;
  color: var(--primary-gold);
  letter-spacing: 0.3em;
  margin-bottom: 1.5rem;
  text-transform: uppercase;
}

.hero-title {
  font-size: 3.5rem;
  line-height: 1.25;
  margin-bottom: 1.5rem;
  word-break: keep-all;
}

.hero-title span {
  display: block;
}

.hero-description {
  font-size: 1.1rem;
  font-weight: 300;
  color: var(--text-muted-light);
  max-width: 600px;
  margin: 0 auto 3rem auto;
  word-break: keep-all;
}

.hero-btns {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
}

.btn-primary {
  background-color: var(--primary-gold);
  color: var(--bg-dark);
  border: 1px solid var(--primary-gold);
  padding: 1rem 2.2rem;
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  cursor: pointer;
  transition: var(--transition);
  border-radius: 2px;
}

.btn-primary:hover {
  background-color: var(--primary-gold-hover);
  border-color: var(--primary-gold-hover);
  transform: translateY(-2px);
  box-shadow: 0 10px 20px rgba(197, 168, 128, 0.2);
}

.btn-secondary {
  background-color: transparent;
  color: var(--text-light);
  border: 1px solid rgba(255, 255, 255, 0.2);
  padding: 1rem 2.2rem;
  font-size: 0.95rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  cursor: pointer;
  transition: var(--transition);
  border-radius: 2px;
}

.btn-secondary:hover {
  background-color: rgba(255, 255, 255, 0.05);
  border-color: var(--text-light);
  transform: translateY(-2px);
}

.scroll-indicator {
  position: absolute;
  bottom: 2.5rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 3;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-muted-light);
  font-size: 0.75rem;
  letter-spacing: 0.20em;
  opacity: 0.7;
}

.scroll-indicator-wheel {
  width: 20px;
  height: 32px;
  border: 1px solid var(--text-muted-light);
  border-radius: 10px;
  position: relative;
}

.scroll-indicator-wheel::after {
  content: '';
  position: absolute;
  top: 6px;
  left: 50%;
  transform: translateX(-50%);
  width: 4px;
  height: 8px;
  background-color: var(--primary-gold);
  border-radius: 2px;
  animation: scrollAnim 1.8s infinite ease-in-out;
}

@keyframes scrollAnim {
  0% { opacity: 0; transform: translate(-50%, 0); }
  30% { opacity: 1; }
  100% { opacity: 0; transform: translate(-50%, 10px); }
}

/* Brand Philosophy Section */
.philosophy-section {
  background-color: var(--bg-dark);
  border-bottom: 1px solid rgba(255, 255, 255, 0.02);
}

.section-header {
  max-width: 700px;
  margin: 0 auto 5rem auto;
}

.section-subtitle {
  font-size: 0.85rem;
  color: var(--primary-gold);
  letter-spacing: 0.25em;
  text-transform: uppercase;
  margin-bottom: 0.75rem;
  display: block;
}

.section-title {
  font-size: 2.5rem;
  margin-bottom: 1.5rem;
  word-break: keep-all;
}

.section-desc {
  color: var(--text-muted-light);
  font-size: 1.05rem;
  font-weight: 300;
  word-break: keep-all;
}

.story-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.story-image-wrap {
  position: relative;
  border-radius: 4px;
  overflow: hidden;
  aspect-ratio: 4/3;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
}

.story-image-wrap::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(to top, rgba(12, 12, 13, 0.8) 0%, transparent 60%);
  z-index: 2;
}

.story-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition-slow);
}

.story-image-wrap:hover .story-img {
  transform: scale(1.05);
}

.story-content {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.story-card {
  background-color: var(--bg-card);
  border: 1px solid rgba(255, 255, 255, 0.03);
  padding: 2.5rem;
  border-radius: 4px;
  transition: var(--transition);
}

.story-card:hover {
  transform: translateY(-5px);
  border-color: rgba(197, 168, 128, 0.25);
  box-shadow: 0 15px 30px rgba(0, 0, 0, 0.3);
}

.story-card-title {
  font-size: 1.35rem;
  margin-bottom: 1rem;
  color: var(--text-light);
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.story-card-title::before {
  content: '';
  display: inline-block;
  width: 6px;
  height: 14px;
  background-color: var(--primary-gold);
}

.story-card-desc {
  color: var(--text-muted-light);
  font-size: 0.95rem;
  line-height: 1.7;
  word-break: keep-all;
}

/* Product Section (Types & Materials) */
.product-section {
  background-color: #121213;
  border-bottom: 1px solid rgba(255, 255, 255, 0.02);
}

.subsection-title {
  font-size: 1.6rem;
  color: var(--primary-gold);
  letter-spacing: 0.05em;
  position: relative;
  display: inline-block;
  padding-bottom: 0.5rem;
}

.subsection-title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 40px;
  height: 2px;
  background-color: var(--primary-gold);
}

.tab-btn {
  background: transparent;
  border: none;
  color: var(--text-muted-light);
  font-family: var(--font-serif);
  font-size: 1.25rem;
  letter-spacing: 0.05em;
  padding: 0.5rem 1.5rem;
  cursor: pointer;
  transition: var(--transition);
  position: relative;
}

.tab-btn.active {
  color: var(--primary-gold);
}

.tab-btn::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 2px;
  background-color: var(--primary-gold);
  transition: var(--transition);
}

.tab-btn.active::after {
  width: 80%;
}

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
}

/* Gakji Types & Materials Grids */
.showcase-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2.5rem;
}

.material-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.product-card {
  background-color: var(--bg-dark);
  border: 1px solid rgba(255, 255, 255, 0.03);
  border-radius: 4px;
  overflow: hidden;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  height: 100%;
}

.product-card:hover {
  transform: translateY(-8px);
  border-color: var(--primary-gold);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
}

.product-image-container {
  width: 100%;
  aspect-ratio: 4/3;
  overflow: hidden;
  position: relative;
  background-color: #0c0c0d;
}

.product-image-container::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(to top, rgba(12, 12, 13, 0.6) 0%, transparent 40%);
}

.product-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition-slow);
}

.product-card:hover .product-img {
  transform: scale(1.08);
}

.product-info {
  padding: 2rem;
  flex-grow: 1;
  display: flex;
  flex-direction: column;
}

.product-name {
  font-size: 1.4rem;
  margin-bottom: 0.75rem;
  color: var(--text-light);
}

.product-price {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  color: var(--primary-gold);
  font-weight: 600;
  margin-bottom: 1rem;
  display: block;
}

.product-desc {
  color: var(--text-muted-light);
  font-size: 0.92rem;
  line-height: 1.6;
  margin-bottom: 1.5rem;
  word-break: keep-all;
}

.product-features {
  list-style: none;
  margin-top: auto;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding-top: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.product-features li {
  font-size: 0.85rem;
  color: var(--text-muted-light);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.product-features li::before {
  content: '✓';
  color: var(--primary-gold);
  font-weight: bold;
}

/* Measurement Guide Section */
.measure-section {
  background-color: var(--bg-dark);
  border-bottom: 1px solid rgba(255, 255, 255, 0.02);
}

.measure-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 4rem;
  align-items: center;
}

.measure-steps {
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
}

.measure-step-item {
  display: flex;
  gap: 1.5rem;
  align-items: flex-start;
}

.measure-number {
  font-family: var(--font-serif);
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--primary-gold-light);
  line-height: 1;
  transition: var(--transition);
  background: linear-gradient(135deg, var(--primary-gold) 0%, rgba(255,255,255,0.1) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.measure-step-item:hover .measure-number {
  transform: scale(1.1);
}

.measure-step-content h3 {
  font-size: 1.2rem;
  margin-bottom: 0.5rem;
  color: var(--text-light);
}

.measure-step-content p {
  color: var(--text-muted-light);
  font-size: 0.92rem;
  line-height: 1.6;
  word-break: keep-all;
}

.measure-illustration-container {
  background-color: var(--bg-card);
  border: 1px solid rgba(197, 168, 128, 0.15);
  border-radius: 8px;
  padding: 3rem;
  text-align: center;
  position: relative;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
}

.measure-vector {
  max-width: 100%;
  height: auto;
  border-radius: 4px;
  margin-bottom: 2rem;
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.measure-tip {
  background-color: rgba(197, 168, 128, 0.05);
  border-left: 3px solid var(--primary-gold);
  padding: 1.2rem;
  border-radius: 0 4px 4px 0;
  text-align: left;
}

.measure-tip h4 {
  font-size: 0.95rem;
  color: var(--primary-gold);
  margin-bottom: 0.35rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.measure-tip p {
  font-size: 0.85rem;
  color: var(--text-muted-light);
  line-height: 1.5;
  word-break: keep-all;
}

/* Custom Order Section (Wizard) */
.order-section {
  background-color: #121213;
  position: relative;
}

.wizard-container {
  max-width: 850px;
  margin: 0 auto;
  background-color: var(--bg-card);
  border: 1px solid rgba(255, 255, 255, 0.03);
  border-radius: 8px;
  padding: 4rem;
  box-shadow: 0 30px 60px rgba(0, 0, 0, 0.5);
  border-top: 3px solid var(--primary-gold);
  position: relative;
}

/* Wizard Header & Progress */
.wizard-progress {
  display: flex;
  justify-content: space-between;
  position: relative;
  margin-bottom: 4rem;
}

.wizard-progress::before {
  content: '';
  position: absolute;
  top: 15px;
  left: 0;
  width: 100%;
  height: 2px;
  background-color: rgba(255, 255, 255, 0.05);
  z-index: 1;
}

.progress-line {
  position: absolute;
  top: 15px;
  left: 0;
  width: 0%;
  height: 2px;
  background-color: var(--primary-gold);
  z-index: 1;
  transition: var(--transition);
}

.progress-step {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 80px;
}

.step-num {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background-color: var(--bg-dark);
  border: 2px solid rgba(255, 255, 255, 0.1);
  color: var(--text-muted-light);
  display: flex;
  justify-content: center;
  align-items: center;
  font-weight: 600;
  font-size: 0.9rem;
  transition: var(--transition);
}

.step-label {
  font-size: 0.78rem;
  color: var(--text-muted-light);
  margin-top: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  white-space: nowrap;
  transition: var(--transition);
}

.progress-step.active .step-num {
  border-color: var(--primary-gold);
  background-color: var(--primary-gold);
  color: var(--bg-dark);
  box-shadow: 0 0 15px rgba(197, 168, 128, 0.4);
}

.progress-step.active .step-label {
  color: var(--text-light);
  font-weight: 600;
}

.progress-step.completed .step-num {
  border-color: var(--primary-gold);
  background-color: var(--bg-dark);
  color: var(--primary-gold);
}

.progress-step.completed .step-label {
  color: var(--primary-gold);
}

/* Wizard Steps Content */
.wizard-step {
  display: none;
  animation: stepFade 0.6s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.wizard-step.active {
  display: block;
}

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

.step-title {
  font-size: 1.8rem;
  margin-bottom: 0.75rem;
  color: var(--text-light);
}

.step-subtitle {
  color: var(--text-muted-light);
  font-size: 0.95rem;
  margin-bottom: 2.5rem;
}

/* Grid Layout for option selection */
.options-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
}

.options-grid-three {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.option-card {
  background-color: var(--bg-dark);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: 6px;
  overflow: hidden;
  cursor: pointer;
  transition: var(--transition);
  position: relative;
  display: flex;
  flex-direction: column;
}

.option-card:hover {
  border-color: rgba(197, 168, 128, 0.4);
  transform: translateY(-4px);
}

.option-card.selected {
  border-color: var(--primary-gold);
  background-color: rgba(197, 168, 128, 0.02);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.3), inset 0 0 0 1px var(--primary-gold);
}

.option-img-container {
  width: 100%;
  aspect-ratio: 16/10;
  overflow: hidden;
  background-color: #0c0c0d;
}

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

.option-card:hover .option-img {
  transform: scale(1.05);
}

.option-info {
  padding: 1.5rem;
  text-align: center;
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.option-name {
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.option-desc {
  font-size: 0.85rem;
  color: var(--text-muted-light);
  line-height: 1.5;
  word-break: keep-all;
}

.option-badge {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background-color: var(--primary-gold);
  color: var(--bg-dark);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.25rem 0.6rem;
  border-radius: 2px;
  z-index: 2;
}

.select-indicator {
  position: absolute;
  bottom: 1.5rem;
  right: 1.5rem;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

.option-card.selected .select-indicator {
  background-color: var(--primary-gold);
  border-color: var(--primary-gold);
}

.option-card.selected .select-indicator::after {
  content: '';
  width: 6px;
  height: 10px;
  border: solid var(--bg-dark);
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
  margin-bottom: 2px;
}

/* Step 3: Measurement Input Fields */
.measure-input-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: flex-start;
}

.inputs-wrap {
  display: flex;
  flex-direction: column;
  gap: 1.8rem;
}

.form-group {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.form-label {
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--text-muted-light);
  letter-spacing: 0.05em;
}

.input-with-unit {
  position: relative;
  display: flex;
  align-items: center;
}

.form-input {
  width: 100%;
  padding: 0.85rem 1rem;
  background-color: var(--bg-dark);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 4px;
  color: var(--text-light);
  font-size: 1rem;
  transition: var(--transition);
}

.form-input:focus {
  border-color: var(--primary-gold);
  outline: none;
  box-shadow: 0 0 10px rgba(197, 168, 128, 0.1);
}

.unit-label {
  position: absolute;
  right: 1rem;
  color: var(--primary-gold);
  font-family: var(--font-serif);
  font-size: 0.9rem;
  font-weight: 600;
}

.file-upload-wrap {
  background-color: var(--bg-dark);
  border: 1px dashed rgba(197, 168, 128, 0.3);
  border-radius: 6px;
  padding: 2.5rem;
  text-align: center;
  transition: var(--transition);
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
}

.file-upload-wrap:hover {
  border-color: var(--primary-gold);
  background-color: rgba(197, 168, 128, 0.01);
}

.file-upload-wrap input[type="file"] {
  display: none;
}

.upload-icon {
  font-size: 2rem;
  color: var(--primary-gold);
}

.upload-title {
  font-size: 0.95rem;
  font-weight: 500;
}

.upload-desc {
  font-size: 0.8rem;
  color: var(--text-muted-light);
  line-height: 1.5;
}

.file-name-preview {
  margin-top: 0.5rem;
  font-size: 0.85rem;
  color: var(--primary-gold);
  font-weight: 500;
  display: none;
}

/* Step 4: Contact & Details Form */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.8rem;
}

.form-group.full-width {
  grid-column: 1 / -1;
}

.form-textarea {
  min-height: 120px;
  resize: vertical;
}

/* Wizard Navigation Buttons */
.wizard-nav {
  display: flex;
  justify-content: space-between;
  margin-top: 4rem;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding-top: 2rem;
}

.btn-nav-prev {
  background-color: transparent;
  color: var(--text-muted-light);
  border: 1px solid rgba(255, 255, 255, 0.1);
  padding: 0.9rem 1.8rem;
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
  border-radius: 2px;
  opacity: 0;
  visibility: hidden;
}

.btn-nav-prev.visible {
  opacity: 1;
  visibility: visible;
}

.btn-nav-prev:hover {
  color: var(--text-light);
  border-color: rgba(255, 255, 255, 0.3);
  background-color: rgba(255, 255, 255, 0.02);
}

.btn-nav-next {
  margin-left: auto;
  min-width: 140px;
}

/* Modal Popup Styles */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(12, 12, 13, 0.85);
  backdrop-filter: blur(15px);
  -webkit-backdrop-filter: blur(15px);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal-content {
  background-color: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: 8px;
  width: 90%;
  max-width: 550px;
  padding: 3.5rem;
  text-align: center;
  position: relative;
  transform: scale(0.85) translateY(30px);
  transition: var(--transition-slow);
  box-shadow: 0 30px 60px rgba(0, 0, 0, 0.6);
}

.modal-overlay.active .modal-content {
  transform: scale(1) translateY(0);
}

.success-icon-wrap {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background-color: var(--primary-gold-light);
  color: var(--primary-gold);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.2rem;
  margin: 0 auto 2rem auto;
  border: 1px solid var(--border-light);
  animation: pulseGold 2s infinite;
}

@keyframes pulseGold {
  0% { box-shadow: 0 0 0 0 rgba(197, 168, 128, 0.4); }
  70% { box-shadow: 0 0 0 15px rgba(197, 168, 128, 0); }
  100% { box-shadow: 0 0 0 0 rgba(197, 168, 128, 0); }
}

.modal-title {
  font-size: 2rem;
  margin-bottom: 1rem;
  color: var(--text-light);
}

.modal-desc {
  color: var(--text-muted-light);
  font-size: 0.95rem;
  line-height: 1.7;
  margin-bottom: 2.5rem;
  word-break: keep-all;
}

.order-summary-box {
  background-color: var(--bg-dark);
  border: 1px solid rgba(255, 255, 255, 0.03);
  border-radius: 4px;
  padding: 1.5rem;
  text-align: left;
  margin-bottom: 2.5rem;
  font-size: 0.9rem;
}

.summary-row {
  display: flex;
  justify-content: space-between;
  padding: 0.5rem 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.03);
}

.summary-row:last-child {
  border-bottom: none;
}

.summary-label {
  color: var(--text-muted-light);
}

.summary-val {
  color: var(--text-light);
  font-weight: 500;
}

.summary-val.gold {
  color: var(--primary-gold);
  font-weight: 600;
}

.btn-modal-close {
  width: 100%;
}

/* Footer Section */
footer {
  background-color: var(--bg-dark);
  padding: 5rem 0;
  border-top: 1px solid rgba(255, 255, 255, 0.02);
}

.footer-grid {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 4rem;
}

.footer-info {
  max-width: 350px;
}

.footer-logo-wrap {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
}

.footer-logo-img {
  height: 32px;
  width: auto;
}

.footer-logo-text {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  letter-spacing: 0.1em;
}

.footer-desc {
  font-size: 0.88rem;
  color: var(--text-muted-light);
  line-height: 1.7;
  word-break: keep-all;
}

.footer-contacts {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  font-size: 0.9rem;
  color: var(--text-muted-light);
}

.footer-contact-item {
  display: flex;
  align-items: center;
  gap: 0.50rem;
}

.footer-contact-label {
  color: var(--primary-gold);
  font-weight: 500;
  min-width: 60px;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.03);
  padding-top: 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
  color: var(--text-muted-light);
}

/* Media Queries (Responsive Design) */
@media (max-width: 1024px) {
  .story-grid {
    gap: 2.5rem;
  }
  
  .material-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .measure-grid {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
  
  .measure-illustration-container {
    max-width: 500px;
    margin: 0 auto;
  }
}

@media (max-width: 768px) {
  .section-padding {
    padding: 5rem 0;
  }
  
  .section-title {
    font-size: 2rem;
  }
  
  /* Navigation mobile */
  .menu-toggle {
    display: flex;
  }
  
  .nav-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background-color: var(--bg-dark);
    border-left: 1px solid rgba(197, 168, 128, 0.15);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 2rem;
    transition: var(--transition-slow);
    z-index: 999;
    padding: 2rem;
  }
  
  .nav-menu.active {
    right: 0;
  }
  
  .nav-menu-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background-color: rgba(0,0,0,0.6);
    backdrop-filter: blur(5px);
    opacity: 0;
    visibility: hidden;
    z-index: 998;
    transition: var(--transition);
  }
  
  .nav-menu-bg.active {
    opacity: 1;
    visibility: visible;
  }
  
  .hero-title {
    font-size: 2.2rem;
  }
  
  .hero-btns {
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    padding: 0 2rem;
  }
  
  .hero-btns button {
    width: 100%;
  }
  
  .story-grid {
    grid-template-columns: 1fr;
  }
  
  .showcase-grid {
    grid-template-columns: 1fr;
  }
  
  .material-grid {
    grid-template-columns: 1fr;
  }
  
  .wizard-container {
    padding: 2rem 1.5rem;
  }
  
  .wizard-progress {
    margin-bottom: 2.5rem;
  }
  
  .step-label {
    display: none;
  }
  
  .progress-step {
    width: auto;
  }
  
  .options-grid, .options-grid-three {
    grid-template-columns: 1fr;
    gap: 1.25rem;
  }
  
  .measure-input-container {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  
  .contact-grid {
    grid-template-columns: 1fr;
  }
  
  .wizard-nav {
    margin-top: 2.5rem;
  }
  
  .footer-grid {
    flex-direction: column;
    gap: 2.5rem;
  }
  
  .footer-info {
    max-width: 100%;
  }
  
  .footer-bottom {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
  }
}

/* Header BGM Toggle Button Styles */
.bgm-toggle-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.5rem 0.95rem;
  background: rgba(21, 21, 23, 0.6);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(197, 168, 128, 0.35);
  border-radius: 20px;
  color: var(--primary-gold);
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  cursor: pointer;
  transition: var(--transition);
}

.bgm-toggle-btn:hover {
  border-color: var(--primary-gold);
  background: rgba(197, 168, 128, 0.12);
  transform: translateY(-1px);
}

.bgm-waves {
  display: flex;
  align-items: flex-end;
  gap: 2px;
  height: 14px;
  width: 14px;
}

.bgm-waves span {
  display: block;
  width: 3px;
  height: 4px;
  background-color: var(--primary-gold);
  border-radius: 1px;
  transition: var(--transition);
}

.bgm-toggle-btn.playing .bgm-waves span:nth-child(1) {
  animation: waveAnim 1.2s infinite ease-in-out;
}
.bgm-toggle-btn.playing .bgm-waves span:nth-child(2) {
  animation: waveAnim 1.2s infinite ease-in-out 0.2s;
}
.bgm-toggle-btn.playing .bgm-waves span:nth-child(3) {
  animation: waveAnim 1.2s infinite ease-in-out 0.4s;
}

@keyframes waveAnim {
  0%, 100% { height: 4px; }
  50% { height: 14px; }
}

.bgm-toggle-btn.paused {
  opacity: 0.75;
  border-color: rgba(255, 255, 255, 0.15);
  color: var(--text-muted-light);
}

.bgm-toggle-btn.paused .bgm-waves span {
  background-color: var(--text-muted-light);
  height: 3px !important;
  animation: none !important;
}

@media (max-width: 768px) {
  .bgm-toggle-btn {
    padding: 0.45rem 0.75rem;
    font-size: 0.75rem;
  }
}