/* Custom styles for Little Brass - Premium Gold & Navy Theme */
@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+KR:wght@300;400;500;700;900&family=Playfair+Display:wght@400;500;600;700;800;900&display=swap');

:root {
  /* Primary Colors - Gold */
  --gold-primary: #D4AF37;
  --gold-light: #E6C86F;
  --gold-dark: #B8941C;
  --gold-accent: #F4E4B7;
  
  /* Secondary Colors - Navy */
  --navy-primary: #1E3A5F;
  --navy-light: #2C5F8D;
  --navy-dark: #0F1E3A;
  --navy-accent: #3A5A7F;
  
  /* Neutral Colors */
  --white: #FFFFFF;
  --gray-light: #F8F9FA;
  --gray-medium: #E9ECEF;
  --gray-dark: #6C757D;
  --black: #212529;
  
  /* Bronze Accent */
  --bronze: #CD7F32;
  --bronze-light: #E09856;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Noto Sans KR', sans-serif;
  line-height: 1.7;
  color: var(--black);
  background-color: var(--white);
}

/* 고급스러운 헤딩 폰트 */
h1, h2, h3, h4, h5, h6 {
  font-family: 'Playfair Display', 'Noto Sans KR', serif;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--navy-primary);
}

/* 고급스러운 스크롤바 */
::-webkit-scrollbar {
  width: 12px;
}

::-webkit-scrollbar-track {
  background: var(--gray-light);
}

::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, var(--gold-primary) 0%, var(--gold-dark) 100%);
  border-radius: 6px;
  border: 2px solid var(--gray-light);
}

::-webkit-scrollbar-thumb:hover {
  background: linear-gradient(180deg, var(--gold-light) 0%, var(--gold-primary) 100%);
}

/* 우아한 애니메이션 */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes shimmer {
  0% {
    background-position: -1000px 0;
  }
  100% {
    background-position: 1000px 0;
  }
}

.fade-in {
  animation: fadeInUp 0.8s ease-out;
}

/* 금빛 반짝임 효과 */
.gold-shimmer {
  background: linear-gradient(90deg, var(--gold-primary) 0%, var(--gold-light) 50%, var(--gold-primary) 100%);
  background-size: 200% auto;
  animation: shimmer 3s linear infinite;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* 네비게이션 스타일 */
nav {
  background: #ffffff;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

nav a {
  position: relative;
  font-weight: 500;
  transition: all 0.3s ease;
}

nav a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--gold-primary), var(--gold-light));
  transition: width 0.3s ease;
}

nav a:hover::after {
  width: 100%;
}

nav a:hover {
  color: var(--gold-primary) !important;
}

/* 프리미엄 카드 스타일 */
.premium-card {
  background: var(--white);
  border: 1px solid var(--gray-medium);
  border-radius: 12px;
  transition: all 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
  position: relative;
  overflow: hidden;
}

.premium-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(212, 175, 55, 0.1), transparent);
  transition: left 0.5s ease;
}

.premium-card:hover::before {
  left: 100%;
}

.premium-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 40px rgba(30, 58, 95, 0.15);
  border-color: var(--gold-primary);
}

/* 골드 버튼 스타일 */
.btn-gold {
  background: linear-gradient(135deg, var(--gold-primary) 0%, var(--gold-dark) 100%);
  color: var(--white);
  padding: 14px 32px;
  border-radius: 50px;
  font-weight: 600;
  text-decoration: none;
  display: inline-block;
  transition: all 0.3s ease;
  box-shadow: 0 4px 15px rgba(212, 175, 55, 0.3);
  border: none;
  cursor: pointer;
}

.btn-gold:hover {
  background: linear-gradient(135deg, var(--gold-light) 0%, var(--gold-primary) 100%);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(212, 175, 55, 0.4);
}

/* 네이비 버튼 스타일 */
.btn-navy {
  background: linear-gradient(135deg, var(--navy-primary) 0%, var(--navy-dark) 100%);
  color: var(--white);
  padding: 14px 32px;
  border-radius: 50px;
  font-weight: 600;
  text-decoration: none;
  display: inline-block;
  transition: all 0.3s ease;
  box-shadow: 0 4px 15px rgba(30, 58, 95, 0.3);
  border: 2px solid transparent;
  cursor: pointer;
}

.btn-navy:hover {
  background: var(--white);
  color: var(--navy-primary);
  border-color: var(--navy-primary);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(30, 58, 95, 0.4);
}

/* 골드 아웃라인 버튼 */
.btn-gold-outline {
  background: transparent;
  color: var(--gold-primary);
  padding: 14px 32px;
  border-radius: 50px;
  font-weight: 600;
  text-decoration: none;
  display: inline-block;
  transition: all 0.3s ease;
  border: 2px solid var(--gold-primary);
  cursor: pointer;
}

.btn-gold-outline:hover {
  background: var(--gold-primary);
  color: var(--white);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(212, 175, 55, 0.3);
}

/* 폼 입력 스타일 */
input:focus, textarea:focus, select:focus {
  border-color: var(--gold-primary);
  outline: none;
  box-shadow: 0 0 0 3px rgba(212, 175, 55, 0.15);
}

input, textarea, select {
  transition: all 0.3s ease;
  border: 2px solid var(--gray-medium);
}

input:hover, textarea:hover, select:hover {
  border-color: var(--gold-light);
}

/* 섹션 제목 스타일 */
.section-title {
  position: relative;
  display: inline-block;
  padding-bottom: 16px;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 4px;
  background: linear-gradient(90deg, var(--gold-primary), var(--gold-light));
  border-radius: 2px;
}

/* 골드 배지 */
.gold-badge {
  background: linear-gradient(135deg, var(--gold-primary) 0%, var(--gold-light) 100%);
  color: var(--navy-dark);
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 0.875rem;
  font-weight: 600;
  display: inline-block;
  box-shadow: 0 2px 8px rgba(212, 175, 55, 0.3);
}

/* 아이콘 골드 효과 */
.icon-gold {
  color: var(--gold-primary);
  background: linear-gradient(135deg, rgba(212, 175, 55, 0.1) 0%, rgba(230, 200, 111, 0.1) 100%);
  padding: 16px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

/* 그라데이션 배경 */
.gradient-gold {
  background: linear-gradient(135deg, var(--gold-accent) 0%, var(--gold-light) 100%);
}

.gradient-navy {
  background: linear-gradient(135deg, var(--navy-dark) 0%, var(--navy-primary) 100%);
}

.gradient-gold-navy {
  background: linear-gradient(135deg, var(--navy-dark) 0%, var(--navy-primary) 50%, var(--gold-dark) 100%);
}

/* 반응형 타이포그래피 */
@media (max-width: 768px) {
  h1 {
    font-size: 2rem;
  }
  
  h2 {
    font-size: 1.75rem;
  }
  
  h3 {
    font-size: 1.5rem;
  }
  
  .text-5xl {
    font-size: 2.25rem;
  }
  
  .text-4xl {
    font-size: 2rem;
  }
  
  .text-3xl {
    font-size: 1.75rem;
  }
}

/* 프리미엄 로딩 애니메이션 */
.loading {
  display: inline-block;
  width: 24px;
  height: 24px;
  border: 3px solid var(--gray-medium);
  border-radius: 50%;
  border-top-color: var(--gold-primary);
  animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* Details 요소 고급 스타일 */
details {
  border: 1px solid var(--gray-medium);
  border-radius: 8px;
  padding: 16px;
  transition: all 0.3s ease;
}

details:hover {
  border-color: var(--gold-primary);
  box-shadow: 0 4px 12px rgba(212, 175, 55, 0.1);
}

details summary {
  list-style: none;
  cursor: pointer;
  font-weight: 600;
  color: var(--navy-primary);
  transition: color 0.3s ease;
}

details summary:hover {
  color: var(--gold-primary);
}

details summary::-webkit-details-marker {
  display: none;
}

details summary::before {
  content: '▶';
  display: inline-block;
  margin-right: 0.75rem;
  color: var(--gold-primary);
  transition: transform 0.3s ease;
  font-size: 0.875rem;
}

details[open] summary::before {
  transform: rotate(90deg);
}

details[open] {
  background: linear-gradient(135deg, rgba(212, 175, 55, 0.03) 0%, rgba(230, 200, 111, 0.03) 100%);
}

/* 이미지 플레이스홀더 */
.img-placeholder {
  background: linear-gradient(135deg, var(--gray-light) 0%, var(--gray-medium) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gray-dark);
  position: relative;
  overflow: hidden;
}

.img-placeholder::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
  animation: shimmer 2s infinite;
}

/* 그림자 효과 */
.shadow-gold {
  box-shadow: 0 4px 20px rgba(212, 175, 55, 0.2);
}

.shadow-navy {
  box-shadow: 0 4px 20px rgba(30, 58, 95, 0.2);
}

.shadow-premium {
  box-shadow: 0 10px 40px rgba(30, 58, 95, 0.1), 0 2px 8px rgba(212, 175, 55, 0.1);
}

/* 호버 시 골드 글로우 */
.glow-gold:hover {
  box-shadow: 0 0 30px rgba(212, 175, 55, 0.5);
  transition: box-shadow 0.3s ease;
}

/* 구분선 */
.divider-gold {
  height: 2px;
  background: linear-gradient(90deg, transparent 0%, var(--gold-primary) 50%, transparent 100%);
  margin: 2rem 0;
}

/* 텍스트 컬러 */
.text-gold {
  color: var(--gold-primary);
}

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

.text-bronze {
  color: var(--bronze);
}

/* 배경 컬러 */
.bg-gold-light {
  background-color: var(--gold-accent);
}

.bg-navy-light {
  background-color: rgba(30, 58, 95, 0.05);
}

/* 푸터 스타일 */
footer {
  background: #f3f4f6;
}

footer a:hover {
  color: var(--gold-light) !important;
}

/* 히어로 섹션 강화 */
.hero-section {
  position: relative;
  overflow: hidden;
}

.hero-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('data:image/svg+xml,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><defs><pattern id="grid" width="100" height="100" patternUnits="userSpaceOnUse"><path d="M 100 0 L 0 0 0 100" fill="none" stroke="rgba(255,255,255,0.05)" stroke-width="1"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
  opacity: 0.5;
}

/* 스크롤 진행 바 */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 0%;
  height: 3px;
  background: linear-gradient(90deg, var(--gold-primary), var(--gold-light));
  z-index: 9999;
  transition: width 0.1s ease;
}

/* 배지 컬렉션 */
.badge-premium {
  background: linear-gradient(135deg, var(--gold-primary), var(--bronze));
  color: white;
  padding: 4px 12px;
  border-radius: 12px;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  box-shadow: 0 2px 8px rgba(212, 175, 55, 0.3);
}

/* 카드 컬렉션 */
.info-card {
  background: white;
  border-radius: 16px;
  padding: 24px;
  border: 1px solid var(--gray-medium);
  transition: all 0.3s ease;
}

.info-card:hover {
  border-color: var(--gold-primary);
  transform: translateY(-4px);
  box-shadow: 0 12px 24px rgba(30, 58, 95, 0.1);
}

/* 프리미엄 텍스처 */
.texture-gold {
  background-image: 
    linear-gradient(135deg, transparent 25%, rgba(212, 175, 55, 0.05) 25%),
    linear-gradient(225deg, transparent 25%, rgba(212, 175, 55, 0.05) 25%),
    linear-gradient(315deg, transparent 25%, rgba(212, 175, 55, 0.05) 25%),
    linear-gradient(45deg, transparent 25%, rgba(212, 175, 55, 0.05) 25%);
  background-size: 20px 20px;
  background-position: 0 0, 10px 0, 10px -10px, 0px 10px;
}

/* 애니메이션 딜레이 유틸리티 */
.delay-100 { animation-delay: 0.1s; }
.delay-200 { animation-delay: 0.2s; }
.delay-300 { animation-delay: 0.3s; }
.delay-400 { animation-delay: 0.4s; }
.delay-500 { animation-delay: 0.5s; }



/* 플로팅 버튼 애니메이션 */
@keyframes bounce-slow {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-10px);
  }
}

.animate-bounce-slow {
  animation: bounce-slow 3s ease-in-out infinite;
}

#floating-naver-button:hover {
  animation: none;
}

/* 모바일에서 플로팅 버튼 크기 조정 */
@media (max-width: 640px) {
  #floating-naver-button {
    bottom: 1rem;
    right: 1rem;
    padding: 1rem;
  }
}


/* 404 페이지 애니메이션 */
@keyframes spin-slow {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

.animate-spin-slow {
  animation: spin-slow 8s linear infinite;
}


/* 스크롤 애니메이션 */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

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

/* 지연 효과 (선택사항) */
.fade-in:nth-child(1) { transition-delay: 0ms; }
.fade-in:nth-child(2) { transition-delay: 100ms; }
.fade-in:nth-child(3) { transition-delay: 200ms; }
.fade-in:nth-child(4) { transition-delay: 300ms; }
.fade-in:nth-child(5) { transition-delay: 400ms; }
.fade-in:nth-child(6) { transition-delay: 500ms; }