/* AV캠프 · 공통 스타일 */
:root {
  --bg-deep: #0b0c10;
  --bg-card: #14151c;
  --bg-elevated: #1a1c26;
  --border: rgba(255, 255, 255, 0.08);
  --text: #ecebf0;
  --text-muted: #9b97ab;
  --accent: #a78bfa;
  --accent-dim: #7c3aed;
  --warn: #fbbf24;
  --radius: 12px;
  --radius-lg: 20px;
  --shadow: 0 18px 50px rgba(0, 0, 0, 0.45);
  --font: "Segoe UI", "Malgun Gothic", "Apple SD Gothic Neo", sans-serif;
  --max: 1120px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

/* 스크롤바 (WebKit: Chrome, Edge, Safari) */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

::-webkit-scrollbar-track {
  background: #111827;
}

::-webkit-scrollbar-thumb {
  background: #374151;
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: #4b5563;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font);
  color: var(--text);
  background: radial-gradient(ellipse 120% 80% at 50% -20%, rgba(124, 58, 237, 0.22), transparent 55%),
    radial-gradient(ellipse 80% 50% at 100% 0%, rgba(167, 139, 250, 0.12), transparent 45%),
    var(--bg-deep);
  line-height: 1.6;
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.15s ease, opacity 0.15s ease;
}

a:hover {
  color: #c4b5fd;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 100;
  padding: 0.75rem 1rem;
  background: var(--accent-dim);
  color: #fff;
}

.skip-link:focus {
  left: 0;
}

/* 상단 연령/법적 고지 띠 */
.age-strip {
  background: linear-gradient(90deg, rgba(251, 191, 36, 0.15), rgba(124, 58, 237, 0.12));
  border-bottom: 1px solid var(--border);
  font-size: 0.8125rem;
  color: var(--text-muted);
}

.age-strip__inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0.5rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  flex-wrap: wrap;
  text-align: center;
}

.age-strip strong {
  color: var(--warn);
  font-weight: 600;
}

/* 헤더 */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(12px);
  background: rgba(11, 12, 16, 0.82);
  border-bottom: 1px solid var(--border);
}

.site-header__inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0.85rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  color: var(--text);
  font-weight: 700;
  font-size: 1.125rem;
  letter-spacing: -0.02em;
}

.brand__logo {
  display: block;
  height: 40px;
  width: auto;
  max-width: 180px;
  object-fit: contain;
  object-position: left center;
  flex-shrink: 0;
}

.nav-main ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 0.5rem;
  align-items: center;
}

.nav-main a {
  display: block;
  padding: 0.5rem 0.85rem;
  border-radius: 999px;
  color: var(--text-muted);
  font-size: 0.9375rem;
}

.nav-main a:hover {
  color: var(--text);
  background: rgba(255, 255, 255, 0.06);
}

.nav-main a[aria-current="page"] {
  color: var(--text);
  background: rgba(167, 139, 250, 0.18);
  box-shadow: inset 0 0 0 1px rgba(167, 139, 250, 0.35);
}

/* 메인 */
main {
  max-width: var(--max);
  margin: 0 auto;
  padding: 2.5rem 1.25rem 4rem;
}

/* 히어로 */
.hero {
  padding: 2rem 0 3rem;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.75rem;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--accent);
  background: rgba(167, 139, 250, 0.12);
  border: 1px solid rgba(167, 139, 250, 0.35);
  margin-bottom: 1rem;
}

.hero h1 {
  margin: 0 0 1rem;
  font-size: clamp(1.75rem, 4vw, 2.35rem);
  line-height: 1.2;
  letter-spacing: -0.03em;
}

.hero__lead {
  margin: 0 0 1.75rem;
  font-size: 1.0625rem;
  color: var(--text-muted);
  max-width: 52ch;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.65rem 1.25rem;
  border-radius: 999px;
  font-size: 0.9375rem;
  font-weight: 600;
  border: none;
  cursor: pointer;
  font-family: inherit;
  transition: transform 0.12s ease, box-shadow 0.12s ease;
}

.btn:active {
  transform: scale(0.98);
}

.btn--primary {
  background: linear-gradient(145deg, var(--accent-dim), #5b21b6);
  color: #fff;
  box-shadow: 0 10px 30px rgba(91, 33, 182, 0.35);
}

.btn--primary:hover {
  color: #fff;
  box-shadow: 0 12px 36px rgba(91, 33, 182, 0.45);
}

.btn--ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}

.btn--ghost:hover {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text);
}

/* 섹션 공통 */
.section {
  margin-top: 3rem;
}

.section__head {
  margin-bottom: 1.25rem;
}

.section__head h2 {
  margin: 0 0 0.35rem;
  font-size: 1.35rem;
  letter-spacing: -0.02em;
}

.section__head p {
  margin: 0;
  font-size: 0.9375rem;
  color: var(--text-muted);
}

/* 정보 허브 · 기본 소개 사이트 (card-grid 아래) */
.hub-spotlight {
  margin-top: 2.25rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
}

.hub-spotlight__title {
  margin: 0 0 0.35rem;
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.hub-spotlight__intro {
  margin: 0 0 1.25rem;
  font-size: 0.9375rem;
  color: var(--text-muted);
  max-width: 65ch;
}

.hub-spotlight__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}

@media (min-width: 640px) {
  .hub-spotlight__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1024px) {
  .hub-spotlight__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.hub-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.hub-card__name {
  margin: 0;
  font-size: 1.05rem;
  font-weight: 700;
}

.hub-card__url {
  margin: 0;
  font-size: 0.8125rem;
  word-break: break-all;
}

.hub-card__url a {
  color: var(--accent);
}

.hub-card__figure {
  margin: 0;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--bg-elevated);
}

.hub-card__figure img {
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.hub-card__text {
  margin: 0;
  font-size: 0.8125rem;
  line-height: 1.55;
  color: var(--text-muted);
}

.hub-card__text--lead {
  font-weight: 600;
  color: var(--text);
}

/* Semrush 참고 · 방문수 순위 표 */
.traffic-rank {
  margin-top: 2.25rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
}

.traffic-rank__title {
  margin: 0 0 0.5rem;
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.traffic-rank__source {
  margin: 0 0 1rem;
  font-size: 0.875rem;
  color: var(--text-muted);
  max-width: 70ch;
  line-height: 1.55;
}

.traffic-rank__source a {
  color: var(--accent);
}

.traffic-rank__table-wrap {
  overflow-x: auto;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  background: var(--bg-card);
  box-shadow: var(--shadow);
}

.traffic-rank__table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.8125rem;
}

.traffic-rank__table caption.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.traffic-rank__table thead th {
  text-align: left;
  padding: 0.75rem 1rem;
  background: var(--bg-elevated);
  color: var(--text-muted);
  font-weight: 600;
  font-size: 0.6875rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  border-bottom: 1px solid var(--border);
}

.traffic-rank__table th:last-child,
.traffic-rank__table td:last-child {
  text-align: right;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.traffic-rank__table tbody td {
  padding: 0.6rem 1rem;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}

.traffic-rank__table tbody tr:nth-child(even) td {
  background: rgba(255, 255, 255, 0.02);
}

.traffic-rank__table tbody tr:last-child td {
  border-bottom: none;
}

.traffic-rank__table td:first-child {
  width: 3rem;
  color: var(--text-muted);
  font-variant-numeric: tabular-nums;
}

.traffic-rank__domain {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  max-width: 100%;
}

.traffic-rank__domain img {
  flex-shrink: 0;
  width: 16px;
  height: 16px;
  border-radius: 3px;
  object-fit: contain;
  background: rgba(255, 255, 255, 0.06);
}

.traffic-rank__domain-cell {
  min-width: 0;
}

.traffic-rank__table td:nth-child(2) a {
  color: var(--accent);
  font-weight: 500;
  word-break: break-all;
}

.traffic-rank__table td:nth-child(2) a:hover {
  color: #c4b5fd;
}

.traffic-rank__note {
  margin: 1rem 0 0;
  font-size: 0.75rem;
  line-height: 1.5;
  color: var(--text-muted);
}

.traffic-rank__note a {
  color: var(--accent);
}

/* 카드 그리드 */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1rem;
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.card__tag {
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent);
}

.card h3 {
  margin: 0;
  font-size: 1.0625rem;
}

.card p {
  margin: 0;
  font-size: 0.875rem;
  color: var(--text-muted);
  flex: 1;
}

.card__meta {
  font-size: 0.75rem;
  color: var(--text-muted);
  opacity: 0.85;
}

/* 정보 블록 */
.notice-box {
  margin-top: 2.5rem;
  padding: 1.25rem 1.5rem;
  border-radius: var(--radius);
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  font-size: 0.875rem;
  color: var(--text-muted);
}

.notice-box strong {
  color: var(--text);
}

/* 푸터 */
.site-footer {
  margin-top: auto;
  border-top: 1px solid var(--border);
  background: rgba(0, 0, 0, 0.25);
  padding: 2rem 1.25rem;
}

.site-footer__inner {
  max-width: var(--max);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  align-items: center;
  text-align: center;
  font-size: 0.8125rem;
  color: var(--text-muted);
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.25rem;
  justify-content: center;
}

.footer-nav a {
  color: var(--text-muted);
}

.footer-nav a:hover {
  color: var(--accent);
}

/* 페이지 간단 레이아웃 (서브페이지) */
.page-title {
  margin: 0 0 0.5rem;
  font-size: clamp(1.5rem, 3vw, 2rem);
}

.prose {
  max-width: 70ch;
}

.prose p {
  margin: 0 0 1rem;
  color: var(--text-muted);
}

.prose ul {
  margin: 0 0 1rem;
  padding-left: 1.25rem;
  color: var(--text-muted);
}

.prose li {
  margin-bottom: 0.35rem;
}

.prose h2 {
  margin: 2rem 0 0.75rem;
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.02em;
}

.prose h2:first-of-type {
  margin-top: 1rem;
}

/* 커뮤니티 플레이스홀더 */
.placeholder-panel {
  margin-top: 1.5rem;
  padding: 2rem;
  border-radius: var(--radius-lg);
  border: 1px dashed rgba(167, 139, 250, 0.4);
  background: rgba(167, 139, 250, 0.06);
  text-align: center;
  color: var(--text-muted);
}

/* 커뮤니티 · 자정까지 카운트다운 */
.midnight-countdown {
  margin: 1rem 0 0;
}

.midnight-countdown__label {
  margin: 0 0 0.5rem;
  font-size: 0.875rem;
  color: var(--text-muted);
}

.midnight-countdown__time {
  display: block;
  margin: 0;
  font-size: clamp(1.75rem, 5vw, 2.25rem);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.08em;
  color: var(--accent);
  font-family: ui-monospace, "Cascadia Code", "Segoe UI Mono", Consolas, monospace;
}

@media (max-width: 640px) {
  .site-header__inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .nav-main {
    width: 100%;
  }

  .nav-main ul {
    width: 100%;
    justify-content: flex-start;
  }
}