/* =====================
   Google Fonts 적용
====================== */
body {
  font-family: 'Poppins', 'Orbitron', Arial, sans-serif;
  background: #0d0d0d;
  color: #f0f0f0;
  margin: 0;
  min-height: 100vh;
  box-sizing: border-box;
}

/* =====================
   Glow 효과 (글자)
====================== */
.glow-text {
  color: #fff;
  text-shadow: 0 0 8px #fff, 0 0 16px #fff, 0 0 32px #fff3;
}

/* =====================
   Header
====================== */
.header {
  padding: 2rem 1rem 1rem 1rem;
  text-align: center;
  background: transparent;
}
.blog-title {
  font-family: 'Orbitron', 'Poppins', Arial, sans-serif;
  font-size: 2.5rem;
  letter-spacing: 2px;
  margin: 0;
}

/* =====================
   Navigation (Nav)
====================== */
.nav {
  display: flex;
  justify-content: center;
  align-items: center;
  background: #181818;
  box-shadow: 0 2px 16px #000a;
  position: relative;
}
.nav-list {
  display: flex;
  gap: 2rem;
  list-style: none;
  margin: 0;
  padding: 0;
}
.nav-link {
  color: #f0f0f0;
  text-decoration: none;
  font-weight: 700;
  font-size: 1.1rem;
  padding: 0.5rem 1rem;
  border-radius: 1rem;
  transition: background 0.2s, box-shadow 0.2s;
  position: relative;
}
.nav-link:hover, .nav-link:focus {
  background: #232323;
  box-shadow: 0 0 8px #ff69b4, 0 0 16px #00ffff;
  color: #fff;
}
.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: #f0f0f0;
  font-size: 2rem;
  margin-left: 1rem;
  cursor: pointer;
}

/* =====================
   Main Section & Cards
====================== */
.main {
  max-width: 1200px;
  margin: 2rem auto;
  padding: 0 1rem;
}
.card-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
}
.card {
  background: #181c24;
  border-radius: 2rem;
  box-shadow: 8px 8px 24px #0a0a0e, -8px -8px 24px #232a36;
  padding: 2rem 1.5rem;
  transition: box-shadow 0.3s, transform 0.3s;
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  animation: fadeInScale 0.7s cubic-bezier(.4,2,.6,1) both;
}
.card-title {
  font-size: 1.5rem;
  margin: 0 0 0.5rem 0;
  font-family: 'Orbitron', 'Poppins', Arial, sans-serif;
}
.card-desc {
  font-size: 1rem;
  margin-bottom: 1.5rem;
  color: #e0e0e0;
}
.card-btn {
  background: #232a36;
  color: #fff;
  border: none;
  border-radius: 1.5rem;
  padding: 0.7rem 2rem;
  font-size: 1rem;
  font-family: 'Poppins', Arial, sans-serif;
  font-weight: 700;
  box-shadow: 4px 4px 16px #0a0a0e, -4px -4px 16px #232a36;
  cursor: pointer;
  transition: box-shadow 0.2s, background 0.2s, color 0.2s;
}
.card-btn:hover, .card-btn:focus {
  box-shadow: 0 0 16px 4px #ff69b4, 0 0 32px 8px #00ffff;
  background: #181c24;
  color: #fff;
}

/* =====================
   Footer
====================== */
.footer {
  background: #181818;
  color: #f0f0f0;
  padding: 2rem 1rem 1rem 1rem;
  text-align: center;
  box-shadow: 0 -2px 16px #000a;
}
.footer-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}
.social-links {
  display: flex;
  gap: 1.5rem;
}
.social-link img {
  width: 28px;
  height: 28px;
  filter: drop-shadow(0 0 8px #fff8);
  transition: filter 0.2s;
}
.social-link:hover img, .social-link:focus img {
  filter: drop-shadow(0 0 16px #ff69b4) drop-shadow(0 0 24px #00ffff);
}

/* =====================
   반응형 (Responsive)
====================== */
@media (max-width: 900px) {
  .card-list {
    grid-template-columns: 1fr;
  }
}
@media (max-width: 600px) {
  .header {
    padding: 1.2rem 0.5rem 0.5rem 0.5rem;
  }
  .blog-title {
    font-size: 1.5rem;
  }
  .main {
    padding: 0 0.5rem;
  }
  .card {
    padding: 1.2rem 0.7rem;
  }
  .nav-list {
    flex-direction: column;
    gap: 0.5rem;
    background: #181818;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    display: none;
    z-index: 10;
    border-radius: 0 0 1.5rem 1.5rem;
    box-shadow: 0 8px 24px #000a;
  }
  .nav-list.active {
    display: flex;
  }
  .nav-toggle {
    display: block;
  }
}

/* =====================
   카테고리 필터 버튼
====================== */
.category-nav {
  display: flex;
  justify-content: center;
  margin: 2rem 0 1.5rem 0;
}
.category-btns {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}
.category-btn {
  background: #181c24;
  color: #00ffff;
  border: none;
  border-radius: 1.5rem;
  padding: 0.5rem 1.5rem;
  font-size: 1rem;
  font-family: 'Poppins', Arial, sans-serif;
  font-weight: 700;
  box-shadow: 4px 4px 16px #0a0a0e, -4px -4px 16px #232a36;
  cursor: pointer;
  margin-bottom: 0.5rem;
  transition: box-shadow 0.2s, background 0.2s, color 0.2s, transform 0.2s;
}
.category-btn.active, .category-btn:hover, .category-btn:focus {
  background: #232a36;
  color: #ff69b4;
  box-shadow: 0 0 16px 4px #ff69b4, 0 0 32px 8px #00ffff;
  transform: scale(1.08);
}

/* =====================
   카드 썸네일
====================== */
.card-thumb {
  width: 100%;
  height: 160px;
  object-fit: cover;
  border-radius: 1.5rem 1.5rem 0 0;
  margin-bottom: 1rem;
  box-shadow: 0 4px 24px #0008;
  background: #232a36;
}

/* =====================
   카드 진입 애니메이션
====================== */
@keyframes fadeInScale {
  0% {
    opacity: 0;
    transform: scale(0.95);
  }
  100% {
    opacity: 1;
    transform: scale(1);
  }
}

/* =====================
   카드 hover 확대
====================== */
.card:hover {
  transform: translateY(-8px) scale(1.04);
  box-shadow: 0 0 32px 8px #ff69b4, 0 0 48px 16px #00ffff;
  z-index: 2;
}

/* =====================
   카드 카테고리 표시
====================== */
.card-category {
  display: inline-block;
  margin-bottom: 1rem;
  padding: 0.2em 1em;
  background: #232a36;
  color: #00ffff;
  border-radius: 1em;
  font-size: 0.9em;
  font-weight: 700;
}

/* =====================
   모달 팝업 스타일
====================== */
.modal {
  position: fixed;
  z-index: 1000;
  left: 0; top: 0; right: 0; bottom: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
}
.modal[style*="display: block"] {
  pointer-events: auto;
}
.modal-dim {
  position: absolute;
  left: 0; top: 0; right: 0; bottom: 0;
  background: rgba(13,13,13,0.85);
  backdrop-filter: blur(2px);
  animation: modalDimFade 0.3s;
}
@keyframes modalDimFade {
  from { opacity: 0; } to { opacity: 1; }
}
.modal-content {
  position: relative;
  z-index: 1;
  background: #181c24;
  color: #f0f0f0;
  border-radius: 2rem;
  box-shadow: 8px 8px 32px #0a0a0e, -8px -8px 32px #232a36, 0 0 32px 8px #00ffff44;
  padding: 2.5rem 2rem 2rem 2rem;
  min-width: 320px;
  max-width: 600px;
  max-height: 80vh;
  overflow-y: auto;
  animation: modalPopFade 0.4s cubic-bezier(.4,2,.6,1);
}
@keyframes modalPopFade {
  0% { opacity: 0; transform: scale(0.92) translateY(40px); }
  100% { opacity: 1; transform: scale(1) translateY(0); }
}
.modal-close {
  position: absolute;
  top: 1.2rem;
  right: 1.5rem;
  background: none;
  border: none;
  color: #fff;
  font-size: 2rem;
  cursor: pointer;
  text-shadow: 0 0 8px #fff, 0 0 16px #00ffff;
  transition: color 0.2s;
}
.modal-close:hover, .modal-close:focus {
  color: #ff69b4;
}
#modal-body {
  font-family: 'Poppins', Arial, sans-serif;
  margin-top: 1.5rem;
  color: #f0f0f0;
  word-break: break-word;
}
/* 모달 내 마크다운 스타일 일부 */
#modal-body h1, #modal-body h2, #modal-body h3 {
  color: #fff;
  text-shadow: 0 0 8px #fff, 0 0 16px #00ffff;
}
#modal-body img {
  max-width: 100%;
  border-radius: 1rem;
  margin: 1rem 0;
  box-shadow: 0 4px 24px #0008;
}

/* 모달 스크롤락 */
body.modal-open {
  overflow: hidden;
}

@media (max-width: 700px) {
  .modal-content {
    max-width: 95vw;
    padding: 1.2rem 0.5rem 1.5rem 0.5rem;
  }
}

/* =====================
   검색창 스타일
====================== */
.search-bar {
  display: flex;
  justify-content: center;
  margin: 2rem 0 0.5rem 0;
}
#search-input {
  width: 100%;
  max-width: 400px;
  padding: 0.7rem 1.2rem;
  border-radius: 1.5rem;
  border: none;
  background: #181c24;
  color: #f0f0f0;
  font-size: 1.1rem;
  font-family: 'Poppins', Arial, sans-serif;
  box-shadow: 2px 2px 12px #0a0a0e, -2px -2px 12px #232a36;
  outline: none;
  transition: box-shadow 0.2s, background 0.2s;
}
#search-input:focus {
  background: #232a36;
  box-shadow: 0 0 16px 4px #00ffff, 0 0 32px 8px #ff69b4;
}

/* =====================
   태그 필터 버튼
====================== */
.tag-nav {
  display: flex;
  justify-content: center;
  margin: 0.5rem 0 1.5rem 0;
}
.tag-btns {
  display: flex;
  gap: 0.7rem;
  flex-wrap: wrap;
}
.tag-btn {
  background: #232a36;
  color: #ff69b4;
  border: none;
  border-radius: 1.2rem;
  padding: 0.35rem 1.1rem;
  font-size: 0.98rem;
  font-family: 'Poppins', Arial, sans-serif;
  font-weight: 700;
  box-shadow: 2px 2px 10px #0a0a0e, -2px -2px 10px #232a36;
  cursor: pointer;
  margin-bottom: 0.3rem;
  transition: box-shadow 0.2s, background 0.2s, color 0.2s, transform 0.2s;
}
.tag-btn.active, .tag-btn:hover, .tag-btn:focus {
  background: #181c24;
  color: #00ffff;
  box-shadow: 0 0 12px 2px #00ffff, 0 0 24px 4px #ff69b4;
  transform: scale(1.08);
}

/* =====================
   페이지네이션
====================== */
.pagination {
  display: flex;
  justify-content: center;
  gap: 0.5rem;
  margin: 2.5rem 0 1.5rem 0;
  flex-wrap: wrap;
}
.pagination-btn {
  background: #181c24;
  color: #f0f0f0;
  border: none;
  border-radius: 1.2rem;
  padding: 0.5rem 1.1rem;
  font-size: 1rem;
  font-family: 'Poppins', Arial, sans-serif;
  font-weight: 700;
  box-shadow: 2px 2px 10px #0a0a0e, -2px -2px 10px #232a36;
  cursor: pointer;
  transition: box-shadow 0.2s, background 0.2s, color 0.2s, transform 0.2s;
}
.pagination-btn.active, .pagination-btn:hover, .pagination-btn:focus {
  background: #00ffff;
  color: #181c24;
  box-shadow: 0 0 16px 4px #ff69b4, 0 0 32px 8px #00ffff;
  transform: scale(1.12);
}

/* =====================
   검색어 하이라이팅
====================== */
mark {
  background: #00ffff44;
  color: #ff69b4;
  font-weight: bold;
  border-radius: 0.3em;
  padding: 0 0.2em;
  box-shadow: 0 0 8px #00ffff, 0 0 16px #ff69b4;
}