/**
 * ========================================================
 * 🏠 home.css - 홈/랜딩 페이지 스타일
 * ========================================================
 * 역할:
 *   - Hero Section: 상단 대형 배너 (제목, 설명, CTA 버튼)
 *   - Quicklinks Section: 주요 메뉴 4개 카드 (사업분야/실적현황/오시는길/고객문의)
 *   - 반응형 레이아웃: 모바일/태블릿/데스크톱 대응
 * 내용:
 *   - .hero: 배경 이미지 + 오버레이 + 텍스트
 *   - .quicklinks-section: 4개 네비게이션 카드 그리드
 *   - .qlink-card: 개별 카드 스타일 + 호버 효과
 *   - .qlink-icon: 원형 아이콘 배지 (Font Awesome)
 *   - 미디어쿼리: 768px/480px 반응형 처리
 * 사용 대상: index.html / home.html
 * ======================================================== */

/* ===== Hero ===== */
.hero {
  position: relative; min-height: 35vh; display: flex; align-items: center;
  background-image: url('https://d2xsxph8kpxj0f.cloudfront.net/310519663595000619/3pkdaD5eA6m8REBWdQEDWJ/hero-petrochemical-PUpZwE7ek6mN9inwZYL6DU.webp');
  background-size: cover; background-position: center; background-repeat: no-repeat;
}
.hero-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(to right, rgba(15,22,36,0.85) 0%, rgba(15,22,36,0.55) 60%, rgba(15,22,36,0.2) 100%);
}
.hero-body {
  position: relative; z-index: 1;
  padding-top: calc(var(--navbar-height) + 60px); padding-bottom: 60px;
}
.hero-body h1 {
  font-family: 'Noto Sans KR', 'Malgun Gothic', Dotum, sans-serif; font-size: clamp(1.4rem, 3vw, 2rem);
  font-weight: 700; color: #fff; line-height: 1.55; margin-bottom: 20px;
  text-shadow: 0 2px 8px rgba(0,0,0,0.5); max-width: 1000px;
}
.hero-body p {
  color: rgba(255,255,255,0.85); font-size: 15px; line-height: 1.8;
  margin-bottom: 32px; max-width: 600px; text-align: justify;
}
.hero-btns { display: flex; gap: 12px; flex-wrap: wrap; }
.btn-hero {
  display: inline-block; padding: 15px 42px; background: #fff;
  color: var(--color-point1) !important; border: 2px solid var(--color-point1); border-radius: 30px; font-size: 15px; font-weight: 600;
  transition: all 0.3s ease;
  box-shadow: 0 2px 8px rgba(42, 157, 93, 0.1); text-decoration: none;
}
.btn-hero:hover { background: var(--color-point1); color: #fff !important; transform: translateY(-2px); box-shadow: 0 4px 16px rgba(42, 157, 93, 0.25); }

@media (max-width: 768px) {
  .hero {
    min-height: 30vh;
  }
  
  .hero-body {
    padding-top: calc(var(--navbar-height) + 40px); 
    padding-bottom: 40px;
  }
  
  .hero-body p {
    font-size: 13px;
    margin-bottom: 20px;
  }
  
  .btn-hero {
    padding: 12px 28px;
    font-size: 13px;
  }
}

@media (max-width: 480px) {
  .hero {
    min-height: 25vh;
  }
  
  .hero-overlay {
    background: linear-gradient(to right, rgba(15,22,36,0.9) 0%, rgba(15,22,36,0.7) 100%);
  }
  
  .hero-body {
    padding-top: calc(var(--navbar-height) + 30px); 
    padding-bottom: 30px;
  }
  
  .hero-body h1 {
    font-size: clamp(1rem, 2.5vw, 1.3rem);
    margin-bottom: 12px;
  }
  
  .hero-body p {
    font-size: 12px;
    margin-bottom: 15px;
    max-width: 100%;
    text-align: left;
  }
  
  .hero-btns {
    gap: 8px;
    flex-direction: column;
  }
  
  .btn-hero {
    padding: 10px 20px;
    font-size: 12px;
    width: 100%;
    text-align: center;
  }
}

/* ===== Quick-links Navigation Section ===== */
.quicklinks-section { background: #fafafa; padding: 80px 0; }
.quicklinks-header { text-align: center; margin-bottom: 48px; }
.quicklinks-header h2 {
  font-size: clamp(1.2rem, 2.5vw, 1.7rem);
  font-weight: 700; color: #1e2d3d; margin-bottom: 14px;
}
.quicklinks-header p { color: #666; font-size: 15px; line-height: 1.8; max-width: 620px; margin: 0 auto; }
.quicklinks-grid {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px;
}
.qlink-card {
  display: flex; flex-direction: column; align-items: center; text-align: center;
  background: #fff; border-radius: 10px; padding: 48px 32px;
  border: 2px solid #e0e0e0; box-shadow: 0 2px 12px rgba(0,0,0,0.06);
  color: #333 !important; text-decoration: none;
  transition: transform 0.22s, box-shadow 0.22s;
  min-height: 240px;
  justify-content: center;
}
.qlink-card.fade-up { animation: fadeUpAnimation 0.8s ease-out forwards; }
.qlink-card:nth-child(1) { animation-delay: 0.1s; }
.qlink-card:nth-child(2) { animation-delay: 0.2s; }
.qlink-card:nth-child(3) { animation-delay: 0.3s; }
.qlink-card:nth-child(4) { animation-delay: 0.4s; }
.qlink-card:hover {
  transform: translateY(-6px); box-shadow: 0 10px 30px rgba(58,87,126,0.15);
  color: #333 !important;
  border-color: var(--color-point1);
}
.qlink-icon {
  width: 68px; height: 68px; border-radius: 50%;
  background: var(--color-point1); display: flex; align-items: center; justify-content: center;
  margin-bottom: 20px;
}
.qlink-icon i { font-size: 1.8rem; color: #fff; }
.qlink-card h3 { font-size: 1.1rem; font-weight: 700; color: #1e2d3d; margin-bottom: 10px; }
.qlink-card p { font-size: 0.88rem; color: #666; line-height: 1.7; margin: 0; }

@media (max-width: 768px) { 
  .quicklinks-section { padding: 60px 0; }
  .quicklinks-header { margin-bottom: 32px; }
  .quicklinks-header h2 { margin-bottom: 10px; }
  .quicklinks-header p { font-size: 13px; }
  .quicklinks-grid { grid-template-columns: 1fr 1fr; gap: 16px; }
  .qlink-card { padding: 30px 20px; min-height: 200px; }
  .qlink-icon { width: 56px; height: 56px; margin-bottom: 12px; }
  .qlink-icon i { font-size: 1.5rem; }
  .qlink-card h3 { font-size: 0.95rem; margin-bottom: 8px; }
  .qlink-card p { font-size: 0.8rem; }
}

@media (max-width: 480px) { 
  .quicklinks-section { padding: 40px 0; }
  .quicklinks-header { margin-bottom: 20px; }
  .quicklinks-header p { font-size: 12px; }
  .quicklinks-grid { grid-template-columns: 1fr; gap: 12px; }
  .qlink-card { padding: 20px 15px; min-height: 150px; }
  .qlink-icon { width: 50px; height: 50px; margin-bottom: 10px; }
  .qlink-icon i { font-size: 1.2rem; }
  .qlink-card h3 { font-size: 0.9rem; margin-bottom: 6px; }
  .qlink-card p { font-size: 0.75rem; }
}

/* ===== CTA Band ===== */
.cta-band {
  background: linear-gradient(135deg, #2A9D5D 0%, #1B7C48 100%);
  padding: 64px 0; text-align: center;
}
.cta-band h2 {
  font-family: 'Noto Sans KR', 'Malgun Gothic', Dotum, sans-serif;
  font-size: clamp(2.0rem, 2.2vw, 2.5rem); color: #fff; margin-bottom: 10px;
}
.cta-band p { color: rgba(255,255,255,0.75); font-size: 14px; margin-bottom: 28px; }
.btn-outline-light {
  display: inline-block; padding: 11px 32px; border: 2px solid #fff;
  color: #fff !important; border-radius: 30px; font-size: 14px; font-weight: 500;
  transition: background 0.2s; text-decoration: none;
}
.btn-outline-light:hover { background: rgba(255,255,255,0.15); color: #fff !important; }

@media (max-width: 768px) {
  .cta-band {
    padding: 48px 0;
  }
  
  .cta-band h2 {
    font-size: clamp(1.5rem, 2vw, 2rem);
    margin-bottom: 8px;
  }
  
  .cta-band p {
    font-size: 12px;
    margin-bottom: 20px;
  }
  
  .btn-outline-light {
    padding: 9px 24px;
    font-size: 12px;
  }
}

@media (max-width: 480px) {
  .cta-band {
    padding: 32px 0;
  }
  
  .cta-band h2 {
    font-size: clamp(1.2rem, 1.5vw, 1.4rem);
    margin-bottom: 6px;
  }
  
  .cta-band p {
    font-size: 11px;
    margin-bottom: 15px;
  }
  
  .btn-outline-light {
    padding: 8px 20px;
    font-size: 11px;
  }
}

/* ===== Partners ===== */
.partners-section { background: #fafafa; padding: 70px 0; }
.section-heading { text-align: center; margin-bottom: 40px; }
.section-heading h2 {
  font-family: 'Noto Sans KR', 'Malgun Gothic', Dotum, sans-serif;
  font-size: clamp(1.2rem, 2vw, 1.5rem); font-weight: 700;
  color: #1e2d3d; margin-bottom: 8px;
}
.section-heading p { color: #888; font-size: 13px; }
.partners-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 20px;
  justify-items: center;
  align-items: center;
}

@media (max-width: 768px) {
  .partners-section { padding: 50px 0; }
  .section-heading { margin-bottom: 30px; }
  .section-heading h2 { margin-bottom: 6px; }
  .partners-grid { grid-template-columns: repeat(auto-fit, minmax(120px, 1fr)); gap: 15px; }
}

@media (max-width: 480px) {
  .partners-section { padding: 30px 0; }
  .section-heading { margin-bottom: 20px; }
  .section-heading p { font-size: 11px; }
  .partners-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
}

@media (max-width: 768px) { .quicklinks-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 480px) { .quicklinks-grid { grid-template-columns: 1fr; } }

/* ===== Fade-up Animation ===== */
@keyframes fadeUpAnimation {
  from {
    opacity: 0.3;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Initial State (hidden by default) */
.fade-up {
  opacity: 0.3;
  transform: translateY(20px);
}
.fade-up.animate {
  animation: fadeUpAnimation 0.8s ease-out forwards;
}

/* ===== Hexagon Section ===== */
.hexagon-section {
  padding: 80px 0; background: #fafafa;
}
.section-heading {
  text-align: center; margin-bottom: 40px;
}
.hexagon-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 30px; justify-items: center;
  width: 100%; margin: 0 auto;
}
.hexagon-card {
  width: 100%; max-width: 250px; height: 330px; display: flex; align-items: center; justify-content: center;
}
.hexagon-card.animate { animation: fadeUpAnimation 0.8s ease-out forwards; }
.hexagon-card.animate:nth-child(1) { animation-delay: 0.1s; }
.hexagon-card.animate:nth-child(2) { animation-delay: 0.2s; }
.hexagon-card.animate:nth-child(3) { animation-delay: 0.3s; }
.hexagon-card.animate:nth-child(4) { animation-delay: 0.4s; }
.hexagon {
  position: relative; width: 300px; height: 300px; display: flex; align-items: center; justify-content: center;
  clip-path: polygon(50% 0%, 100% 25%, 100% 75%, 50% 100%, 0% 75%, 0% 25%);
  background: var(--color-point1); box-shadow: 0 12px 32px rgba(42, 157, 93, 0.3);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.hexagon:hover {
  transform: scale(1.08); box-shadow: 0 16px 40px rgba(42, 157, 93, 0.4);
}
.hexagon-content {
  text-align: center; color: #fff; padding: 30px 20px; display: flex; flex-direction: column; align-items: center; justify-content: center;
  height: 100%;
}
.hexagon-content i {
  font-size: 2.5rem; margin-bottom: 15px; color: rgba(255,255,255,0.95);
}
.hexagon-content h3 {
  font-size: 1.0rem; font-weight: 600; margin-bottom: 12px; line-height: 1.3;
}
.hexagon-content p {
  font-size: 0.8rem; line-height: 1.5; color: rgb(255, 255, 255);
}

.partners-image-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 20px;
  justify-items: center;
  align-items: center;
}

.partner-logo {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #fff;
  padding: 15px;
  border-radius: 8px;
  border: 1px solid #e0e0e0;
  min-height: 70px;
}

.partner-logo:hover {
  border-color: var(--color-point1);
  box-shadow: 0 2px 8px rgba(107, 157, 138, 0.15);
}

.partner-logo img {
  max-height: 80px;
  max-width: 100%;
  width: auto;
  height: auto;
  object-fit: contain;
}


@media (max-width: 1024px) {
  .hexagon-grid { grid-template-columns: repeat(2, 1fr); gap: 40px; }
  .hexagon-card { max-width: 300px; }
  .hexagon { width: 280px; height: 280px; }
  .hexagon-content i { font-size: 2.5rem; }
  .hexagon-content h3 { font-size: 1.1rem; }
  .hexagon-content p { font-size: 0.85rem; }
}
@media (max-width: 768px) {
  .hexagon-section { padding: 60px 0; }
  .hexagon-grid { grid-template-columns: repeat(2, 1fr); gap: 30px; }
  .hexagon-card { max-width: 250px; height: 280px; }
  .hexagon { width: 240px; height: 240px; }
  .hexagon-content { padding: 20px; }
  .hexagon-content i { font-size: 2.2rem; margin-bottom: 10px; }
  .hexagon-content h3 { font-size: 1rem; }
  .hexagon-content p { font-size: 0.8rem; }
}
@media (max-width: 480px) {
  .hexagon-grid { grid-template-columns: 1fr; gap: 20px; }
  .hexagon-card { max-width: 200px; height: 240px; }
  .hexagon { width: 200px; height: 200px; }
  .hexagon-content i { font-size: 2rem; }
  .hexagon-content h3 { font-size: 0.95rem; margin-bottom: 8px; }
  .hexagon-content p { font-size: 0.75rem; }
}