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

/* 전체 배경: 검정 */
html, body {
  height: 100%;
  background: #000;
  color: #fff;
  font-family: "Noto Sans KR", system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial;
}

/* 상단 탭 */
.topbar {
  width: 100%;
  background: rgba(10,10,10,0.9);
  border-bottom: 1px solid rgba(255,255,255,0.04);
  position: sticky;
  top: 0;
  z-index: 50;
}
.topbar-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 12px;
}
.logo { height: 40px; width: auto; }

/* 메인 카테고리 (가운데) */
.main-cats ul {
  list-style: none;
  display: flex;
  gap: 12px;
}
.main-cats a {
  color: #ddd;
  text-decoration: none;
  padding: 8px 12px;
  border-radius: 6px;
  transition: background .15s, color .15s;
}
.main-cats a:hover, .main-cats a.active {
  background: rgba(255,255,255,0.06);
  color: #fff;
}

/* 로그인 버튼 */
.login-btn {
  color: #fff;
  text-decoration: none;
  padding: 8px 12px;
  border-radius: 6px;
  background: linear-gradient(90deg,#0b84ff,#6a00ff);
}

/* 모바일 메뉴 버튼 (숨김: 데스크탑) */
.mobile-menu-btn {
  display: none;
  margin-left: auto;
  background: transparent;
  border: none;
  color: #fff;
  font-size: 20px;
}

/* 레이아웃: 좌측 패널 + 메인 */
.container {
  max-width: 1200px;
  margin: 20px auto;
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 20px;
  padding: 0 12px;
}

/* 좌측 패널 */
.left-panel {
  background: rgba(255,255,255,0.02);
  border-radius: 8px;
  padding: 12px;
  min-height: 320px;
}
.subcats ul { list-style: none; }
.subcats li {
  padding: 8px 10px;
  border-radius: 6px;
  color: #ddd;
  cursor: pointer;
  margin-bottom: 6px;
}
.subcats li:hover, .subcats li.active {
  background: rgba(255,255,255,0.04);
  color: #fff;
}

/* 메인 콘텐츠 */
.main-content {
  background: rgba(255,255,255,0.02);
  border-radius: 8px;
  padding: 16px;
  min-height: 320px;
}
.board-list .board-item {
  padding: 12px;
  border-bottom: 1px solid rgba(255,255,255,0.03);
  display: flex;
  justify-content: space-between;
  gap: 12px;
}
.board-list .board-item:last-child { border-bottom: none; }
.board-list .title { color: #fff; font-weight: 600; }
.board-list .meta { color: #aaa; font-size: 13px; }

/* 푸터 */
.site-footer {
  margin-top: 24px;
  padding: 18px 0;
  border-top: 1px solid rgba(255,255,255,0.04);
  background: rgba(0,0,0,0.6);
}
.footer-inner { max-width: 1200px; margin: 0 auto; padding: 0 12px; color: #aaa; font-size: 13px; }

/* 반응형: 모바일 */
@media (max-width: 900px) {
  .container { grid-template-columns: 1fr; }
  .left-panel { order: 2; }
  .main-content { order: 1; }
  .main-cats { display: none; }
  .mobile-menu-btn { display: block; }
}