/* 
========== CSS VARIABLES & THEME ==========
*/
:root {
  /* Colors - Premium Black & Gold Theme */
  --bg-dark: #0a0a0a;
  --bg-darker: #050505;
  --bg-card: #141414;
  --gold-primary: #D4AF37;
  /* Classic Gold */
  --gold-light: #F4D03F;
  /* Bright Gold */
  --gold-gradient: linear-gradient(135deg, #F4D03F 0%, #D4AF37 100%);
  --gold-hover: #b5952f;

  --text-main: #f0f0f0;
  --text-muted: #a0a0a0;
  --text-dark: #1a1a1a;

  --border-color: rgba(212, 175, 55, 0.2);
  --border-light: rgba(255, 255, 255, 0.08);

  --shadow-gold: 0 4px 20px rgba(212, 175, 55, 0.15);
  --shadow-dark: 0 10px 30px rgba(0, 0, 0, 0.5);

  /* Typography */
  --font-family: 'Pretendard Variable', Pretendard, -apple-system, BlinkMacSystemFont, system-ui, Roboto, "Helvetica Neue", "Segoe UI", "Apple SD Gothic Neo", "Noto Sans KR", "Malgun Gothic", "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", sans-serif;

  /* Spacing & Layout */
  --container-width: 1200px;
  --nav-height: 80px;

  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
}

/* 
========== RESET & BASE ==========
*/
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  font-family: var(--font-family);
  background-color: var(--bg-dark);
  color: var(--text-main);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

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

ul {
  list-style: none;
}

img {
  max-width: 100%;
  border-radius: 8px;
}

/* 
========== TYPOGRAPHY & UTILITIES ==========
*/
h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 0.5em;
  letter-spacing: -0.02em;
}

.gold-text {
  color: var(--gold-primary);
  background: var(--gold-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

.gold-subtitle {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--gold-primary);
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: 1rem;
}

.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 20px;
}

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

.section-title {
  margin-bottom: 3rem;
}

.section-title h2 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.section-title p {
  color: var(--text-muted);
  font-size: 1.1rem;
  max-width: 600px;
  margin: 0 auto;
}

section {
  padding: 100px 0;
}

/* Buttons */
.btn-primary {
  display: inline-block;
  background: var(--gold-gradient);
  color: var(--text-dark);
  font-weight: 700;
  padding: 12px 28px;
  border-radius: 50px;
  border: none;
  cursor: pointer;
  box-shadow: var(--shadow-gold);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 25px rgba(212, 175, 55, 0.3);
  color: #000;
}

.btn-outline {
  display: inline-block;
  background: transparent;
  color: var(--gold-primary);
  font-weight: 700;
  padding: 10px 26px;
  border-radius: 50px;
  border: 2px solid var(--gold-primary);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-outline:hover {
  background: rgba(212, 175, 55, 0.1);
}

.btn-primary.large,
.btn-outline.large {
  padding: 16px 36px;
  font-size: 1.1rem;
}

/* 
========== ANIMATIONS ==========
*/
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s cubic-bezier(0.165, 0.84, 0.44, 1),
    transform 0.8s cubic-bezier(0.165, 0.84, 0.44, 1);
}

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

/* 
========== HEADER / NAVBAR ==========
*/
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--nav-height);
  background: rgba(10, 10, 10, 0.6);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  z-index: 1000;
  border-bottom: 1px solid var(--border-light);
  transition: background var(--transition-normal), height var(--transition-normal);
}

.navbar.scrolled {
  height: 70px;
  background: rgba(5, 5, 5, 0.95);
  box-shadow: var(--shadow-dark);
}

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

.logo {
  font-size: 1.5rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.logo i {
  color: var(--gold-primary);
  font-size: 1.8rem;
}

.nav-links {
  display: flex;
  gap: 2rem;
}

.nav-links a {
  font-size: 1rem;
  font-weight: 500;
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gold-gradient);
  transition: width var(--transition-fast);
}

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

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

@media (max-width: 900px) {
  .nav-links {
    display: none;
    /* Mobile menu toggling logic can be added */
  }
}

@media (max-width: 500px) {
  .nav-btn.btn-primary {
    padding: 8px 16px;
    font-size: 0.9rem;
  }

  .logo span {
    display: none;
  }
}

/* 
========== HERO SECTION ==========
*/
.hero {
  height: 100vh;
  min-height: 600px;
  display: flex;
  align-items: center;
  position: relative;
  /* Premium Dark Texture / Placeholder Background Update target URL */
  background: url('https://images.unsplash.com/photo-1541888086431-2fb0c9ea4c34?q=80&w=1920&auto=format&fit=crop') center/cover no-repeat;
  padding-top: var(--nav-height);
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to right, rgba(5, 5, 5, 0.9), rgba(10, 10, 10, 0.7));
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 800px;
}

.badge {
  display: inline-block;
  padding: 6px 12px;
  background: rgba(212, 175, 55, 0.1);
  border: 1px solid var(--border-color);
  color: var(--gold-primary);
  border-radius: 30px;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
}

.hero-title {
  font-size: 3.5rem;
  line-height: 1.2;
  margin-bottom: 1.5rem;
}

.hero-subtitle {
  font-size: 1.2rem;
  color: var(--text-muted);
  margin-bottom: 2.5rem;
  max-width: 600px;
}

.hero-buttons {
  display: flex;
  gap: 1rem;
  margin-bottom: 3rem;
}

.hero-search-keywords {
  font-size: 0.9rem;
  color: #777;
}

.hero-search-keywords span {
  display: inline-block;
  margin-left: 0.5rem;
  color: var(--text-muted);
  border-bottom: 1px dashed #555;
  cursor: pointer;
}

.hero-search-keywords span:hover {
  color: var(--gold-primary);
  border-color: var(--gold-primary);
}

@media (max-width: 768px) {
  .hero-title {
    font-size: 2.5rem;
  }

  .hero-subtitle {
    font-size: 1.05rem;
  }

  .hero-buttons {
    flex-direction: column;
  }
}

/* 
========== STATS SECTION ==========
*/
.stats {
  padding: 40px 0;
  background-color: var(--bg-darker);
  border-bottom: 1px solid var(--border-light);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
  text-align: center;
}

.stat-item {
  padding: 20px;
}

.stat-item i {
  font-size: 2rem;
  color: var(--gold-primary);
  margin-bottom: 1rem;
}

.stat-item h3 {
  font-size: 1.2rem;
  color: var(--text-main);
  margin-bottom: 0.5rem;
}

.stat-item p {
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* 
========== SERVICES SECTION ==========
*/
.services {
  background: var(--bg-dark);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
}

.service-card {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: 16px;
  padding: 40px 30px;
  transition: transform var(--transition-normal), ease var(--transition-normal), box-shadow var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: var(--gold-gradient);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-normal);
}

.service-card:hover {
  transform: translateY(-10px);
  border-color: var(--border-color);
  box-shadow: var(--shadow-dark);
}

.service-card:hover::before {
  transform: scaleX(1);
}

.service-card .icon-wrapper {
  width: 60px;
  height: 60px;
  background: rgba(212, 175, 55, 0.1);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
}

.service-card .icon-wrapper i {
  font-size: 1.8rem;
  color: var(--gold-primary);
}

.service-card h3 {
  font-size: 1.5rem;
  margin-bottom: 1.5rem;
}

.service-list {
  margin-bottom: 2rem;
}

.service-list li {
  margin-bottom: 0.8rem;
  color: var(--text-muted);
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
}

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

.learn-more {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--gold-primary);
  font-weight: 600;
  text-decoration: none;
}

.learn-more:hover {
  gap: 1rem;
}

/* 
========== ABOUT & TRUST SECTION ==========
*/
.about {
  background: var(--bg-darker);
}

.flex-row {
  display: flex;
  align-items: center;
  gap: 4rem;
}

.about-content {
  flex: 1;
}

.about-content h2 {
  font-size: 2.5rem;
  margin-bottom: 1.5rem;
}

.about-content p {
  color: var(--text-muted);
  font-size: 1.1rem;
  margin-bottom: 2rem;
}

.checklist {
  margin-bottom: 2.5rem;
}

.checklist p {
  color: var(--text-main);
  font-size: 1.05rem;
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.8rem;
}

.about-image {
  flex: 1;
  position: relative;
}

.about-image img {
  width: 100%;
  border-radius: 20px;
  box-shadow: var(--shadow-dark);
  border: 1px solid var(--border-light);
}

.experience-badge {
  position: absolute;
  bottom: -20px;
  left: -20px;
  background: var(--gold-gradient);
  color: var(--text-dark);
  padding: 20px 30px;
  border-radius: 16px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  gap: 1rem;
}

.experience-badge .number {
  font-size: 3rem;
  font-weight: 800;
  line-height: 1;
}

.experience-badge .text {
  font-weight: 700;
  line-height: 1.3;
}

@media (max-width: 900px) {
  .flex-row {
    flex-direction: column;
  }

  .about-content h2 {
    font-size: 2rem;
  }

  .experience-badge {
    bottom: 20px;
    left: 20px;
  }
}

/* 
========== LOCATIONS SECTION ==========
*/
.locations {
  background: var(--bg-dark);
}

.locations-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
}

.location-card {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  padding: 30px 20px;
  border-radius: 12px;
  text-align: center;
  transition: all var(--transition-fast);
}

.location-card:hover {
  background: rgba(212, 175, 55, 0.05);
  border-color: var(--border-color);
  transform: translateY(-5px);
}

.location-card h3 {
  color: var(--gold-light);
  margin-bottom: 0.5rem;
}

.location-card p {
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* 
========== FAQ SECTION ==========
*/
.faq {
  background: var(--bg-darker);
}

.accordion {
  max-width: 800px;
  margin: 0 auto;
}

.accordion-item {
  margin-bottom: 1rem;
  border: 1px solid var(--border-light);
  border-radius: 8px;
  background: var(--bg-card);
  overflow: hidden;
}

.accordion-header {
  width: 100%;
  padding: 20px 25px;
  background: none;
  border: none;
  text-align: left;
  color: var(--text-main);
  font-size: 1.1rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: color var(--transition-fast);
}

.accordion-header:hover {
  color: var(--gold-primary);
}

.accordion-header i {
  transition: transform var(--transition-fast);
  color: var(--gold-primary);
}

.accordion-header[aria-expanded="true"] i {
  transform: rotate(180deg);
}

.accordion-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-normal);
  background: var(--bg-dark);
}

.accordion-content p {
  padding: 0 25px 25px 25px;
  color: var(--text-muted);
}

.cta-banner {
  max-width: 800px;
  margin: 60px auto 0;
  background: linear-gradient(to right, rgba(20, 20, 20, 0.8), rgba(30, 30, 30, 0.8)),
    url('https://images.unsplash.com/photo-1554224155-8d04cb21cd6c?auto=format&fit=crop&q=80') center/cover;
  padding: 50px 40px;
  border-radius: 20px;
  text-align: center;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-gold);
}

.cta-banner h3 {
  font-size: 2rem;
  margin-bottom: 1rem;
  color: #fff;
}

.cta-banner p {
  font-size: 1.1rem;
  color: #ccc;
  margin-bottom: 2rem;
}

/* 
========== FOOTER ==========
*/
.footer {
  background: #020202;
  padding: 80px 0 30px;
  border-top: 1px solid var(--border-light);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-info p {
  color: #888;
  margin-top: 1rem;
  font-size: 0.95rem;
}

.footer-links h4,
.footer-contact h4 {
  color: var(--text-main);
  margin-bottom: 1.5rem;
  font-size: 1.1rem;
}

.footer-links ul li {
  margin-bottom: 0.8rem;
}

.footer-links ul li a {
  color: #888;
}

.footer-links ul li a:hover {
  color: var(--gold-primary);
}

.footer-contact li {
  color: #888;
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.8rem;
}

.footer-contact li i {
  color: var(--gold-primary);
}

.footer-contact strong {
  color: var(--text-main);
  font-size: 1.2rem;
}

.footer-bottom {
  border-top: 1px solid #1a1a1a;
  padding-top: 20px;
  color: #666;
  font-size: 0.85rem;
}

@media (max-width: 768px) {
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}

/* 
========== FLOATING CTA ==========
*/
.floating-cta {
  position: fixed;
  right: 20px;
  bottom: 30px;
  display: flex;
  flex-direction: column;
  gap: 15px;
  z-index: 999;
}

.action-btn {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
  transition: transform var(--transition-fast);
  position: relative;
}

.action-btn i {
  font-size: 1.3rem;
  margin-bottom: 2px;
}

.action-btn span {
  font-size: 0.65rem;
  font-weight: 700;
  line-height: 1.1;
  text-align: center;
}

.action-btn:hover {
  transform: scale(1.1);
}

.call-btn {
  background: var(--gold-gradient);
  color: var(--text-dark);
}

.kakao-btn {
  background: #FEE500;
  /* Kakao Yellow */
  color: #1a1a1a;
}