/* ==========================================================================
   1. 기본 변수 및 리셋 (시니어 가독성 중심)
   ========================================================================== */
:root {
  --primary: #0284c7;       /* 신뢰감을 주는 메인 블루 */
  --primary-dark: #0369a1;
  --secondary: #16a34a;     /* 부업/수익 포인트 그린 */
  --accent: #d97706;        /* 지원금 포인트 오렌지 */
  --bg-main: #f8fafc;       /* 은은한 연회색 배경 */
  --card-bg: #ffffff;
  --text-main: #0f172a;     /* 진한 텍스트로 시인성 확보 */
  --text-muted: #475569;
  --border-color: #e2e8f0;
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --max-width: 1140px;
}

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

body {
  font-family: var(--font-family);
  font-size: 18px; /* 시니어 배려 기본 글씨 크기 */
  line-height: 1.6;
  color: var(--text-main);
  background-color: var(--bg-main);
  word-break: keep-all;
}

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

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

/* ==========================================================================
   2. 헤더 & 스티키 네비게이션
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  background-color: #ffffff;
  border-bottom: 1px solid var(--border-color);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.03);
  z-index: 1000;
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 16px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.brand-logo {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--primary-dark);
  display: flex;
  align-items: center;
  gap: 8px;
}

.logo-badge {
  background: var(--primary);
  color: #fff;
  font-size: 0.8rem;
  padding: 2px 8px;
  border-radius: 6px;
}

.main-nav ul {
  display: flex;
  list-style: none;
  gap: 28px;
}

.main-nav a {
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--text-muted);
  transition: color 0.2s;
}

.main-nav a:hover,
.main-nav a.active {
  color: var(--primary);
}

.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  flex-direction: column;
  gap: 5px;
}

.mobile-menu-toggle span {
  width: 25px;
  height: 3px;
  background-color: var(--text-main);
  border-radius: 2px;
}

/* ==========================================================================
   3. 히어로 비주얼 섹션
   ========================================================================== */
.hero-banner {
  background: linear-gradient(135deg, #0284c7 0%, #0369a1 100%);
  color: #ffffff;
  padding: 50px 0 60px;
  text-align: center;
}

.hero-subtitle {
  display: inline-block;
  background: rgba(255, 255, 255, 0.2);
  padding: 4px 14px;
  border-radius: 20px;
  font-size: 0.95rem;
  margin-bottom: 12px;
}

.hero-title {
  font-size: 2.2rem;
  font-weight: 800;
  line-height: 1.35;
  margin-bottom: 16px;
}

.hero-desc {
  font-size: 1.15rem;
  opacity: 0.9;
  max-width: 700px;
  margin: 0 auto 30px;
}

.quick-category {
  display: flex;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
}

.cat-btn {
  background: #ffffff;
  color: var(--primary-dark);
  font-weight: 700;
  padding: 12px 20px;
  border-radius: 30px;
  font-size: 1rem;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  transition: transform 0.2s;
}

.cat-btn:hover {
  transform: translateY(-2px);
}

/* ==========================================================================
   4. 카드 그리드 레이아웃
   ========================================================================== */
.cards-section {
  padding: 50px 20px;
}

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: 25px;
}

.section-header h2 {
  font-size: 1.6rem;
  font-weight: 800;
}

.view-all {
  color: var(--primary);
  font-weight: 700;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 30px;
}

.info-card {
  background-color: var(--card-bg);
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--border-color);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.03);
  display: flex;
  flex-direction: column;
  transition: transform 0.2s, box-shadow 0.2s;
}

.info-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.08);
}

.card-image {
  position: relative;
  height: 200px;
  background-color: #cbd5e1;
}

.card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.badge {
  position: absolute;
  top: 15px;
  left: 15px;
  color: #fff;
  font-size: 0.85rem;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 6px;
}

.badge-blue { background-color: var(--primary); }
.badge-green { background-color: var(--secondary); }
.badge-orange { background-color: var(--accent); }

.card-body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.card-title {
  font-size: 1.25rem;
  line-height: 1.4;
  margin-bottom: 12px;
}

.card-title a:hover {
  color: var(--primary);
}

.card-text {
  color: var(--text-muted);
  font-size: 1rem;
  margin-bottom: 20px;
  flex-grow: 1;
}

.card-meta {
  display: flex;
  justify-content: space-between;
  font-size: 0.9rem;
  color: #94a3b8;
  border-top: 1px solid #f1f5f9;
  padding-top: 15px;
}

.read-more {
  color: var(--primary);
  font-weight: 700;
}

/* ==========================================================================
   5. 푸터 & 모바일 반응형 Breakpoints
   ========================================================================== */
.site-footer {
  background-color: #0f172a;
  color: #94a3b8;
  padding: 40px 0;
  margin-top: 40px;
  font-size: 0.95rem;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
}

.footer-info strong {
  color: #f8fafc;
  font-size: 1.1rem;
}

/* 모바일 전용 UI 제어 (768px 이하) */
@media (max-width: 768px) {
  .mobile-menu-toggle {
    display: flex;
  }

  .main-nav {
    display: none;
    width: 100%;
    position: absolute;
    top: 100%;
    left: 0;
    background: #ffffff;
    border-bottom: 1px solid var(--border-color);
    box-shadow: 0 10px 15px rgba(0, 0, 0, 0.05);
  }

  .main-nav.open {
    display: block;
  }

  .main-nav ul {
    flex-direction: column;
    gap: 0;
  }

  .main-nav a {
    display: block;
    padding: 15px 20px;
    border-top: 1px solid #f1f5f9;
  }

  .hero-title {
    font-size: 1.7rem;
  }

  .card-grid {
    grid-template-columns: 1fr; /* 모바일에서 1열 카드로 정렬 */
  }

  .footer-inner {
    flex-direction: column;
    text-align: center;
  }
}