/* ===========================
   RESET & BASE
=========================== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Noto Sans KR', sans-serif;
  background-color: #f2f5f0;
  color: #1e2b1e;
  line-height: 1.6;
  min-height: 100vh;
}

/* ===========================
   HEADER
=========================== */
#site-header {
  background-color: #2a3d2a;
  color: #f2f5f0;
  text-align: center;
  padding: 60px 24px 48px;
  position: relative;
  overflow: hidden;
}

#site-header::before {
  content: '';
  position: absolute;
  top: -70px;
  right: -70px;
  width: 280px;
  height: 280px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.04);
  pointer-events: none;
}

#site-header::after {
  content: '';
  position: absolute;
  bottom: -50px;
  left: -50px;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.03);
  pointer-events: none;
}

.header-inner {
  position: relative;
  z-index: 1;
  max-width: 680px;
  margin: 0 auto;
}

.header-badge {
  display: inline-block;
  font-family: 'Noto Serif KR', serif;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.18em;
  color: #a8c4a0;
  border: 1px solid #a8c4a0;
  border-radius: 20px;
  padding: 4px 16px;
  margin-bottom: 14px;
}

.brand-name {
  font-family: 'Noto Serif KR', serif;
  font-size: 13px;
  font-weight: 400;
  letter-spacing: 0.12em;
  color: #a8c4a0;
  margin-bottom: 10px;
}

.site-title {
  font-family: 'Noto Serif KR', serif;
  font-size: clamp(26px, 5vw, 40px);
  font-weight: 700;
  letter-spacing: -0.01em;
  color: #f2f5f0;
  margin-bottom: 14px;
}

.site-subtitle {
  font-size: 14px;
  font-weight: 300;
  color: #7fa882;
  letter-spacing: 0.06em;
  margin-bottom: 28px;
}

.header-divider {
  width: 36px;
  height: 1px;
  background: #6a9b6e;
  margin: 0 auto 18px;
}

.header-notice {
  font-size: 12px;
  color: #5a7a5c;
  letter-spacing: 0.03em;
}

/* ===========================
   FILTER BAR
=========================== */
#filter-bar {
  display: flex;
  justify-content: center;
  gap: 8px;
  padding: 18px 16px;
  background-color: #f2f5f0;
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid #d8e4d4;
}

.filter-btn {
  font-family: 'Noto Sans KR', sans-serif;
  font-size: 13px;
  font-weight: 500;
  padding: 8px 20px;
  border-radius: 24px;
  border: 1.5px solid #b8ccb4;
  background: transparent;
  color: #4a6b4a;
  cursor: pointer;
  transition: all 0.2s ease;
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.filter-btn:hover {
  border-color: #2a3d2a;
  color: #2a3d2a;
}

.filter-btn.active {
  background-color: #2a3d2a;
  border-color: #2a3d2a;
  color: #f2f5f0;
}

/* ===========================
   MAIN LAYOUT
=========================== */
#main-content {
  max-width: 1080px;
  margin: 0 auto;
  padding: 40px 20px 80px;
}

/* ===========================
   VENUE SECTION
=========================== */
.venue-section {
  margin-bottom: 60px;
  transition: opacity 0.3s ease;
}

.venue-section.hidden {
  display: none;
}

.venue-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.1em;
  padding: 6px 16px;
  border-radius: 4px;
  margin-bottom: 24px;
}

.seminar-label {
  background-color: #2a3d2a;
  color: #f2f5f0;
}

.table-label {
  background-color: #4a7a52;
  color: #f2f5f0;
}

.venue-icon {
  font-size: 14px;
}

/* ===========================
   CARDS GRID
=========================== */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 20px;
}

/* ===========================
   MEETING CARD
=========================== */
.meeting-card {
  background: #ffffff;
  border-radius: 12px;
  border: 1px solid #ddebd8;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
  animation: fadeInUp 0.4s ease both;
}

.meeting-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(42, 61, 42, 0.13);
  border-color: #8ab88e;
}

/* 카드 상단 색상 포인트 — 그린 계열 팔레트 */
.meeting-card[data-index="1"]  { --accent: #3d6b44; }
.meeting-card[data-index="2"]  { --accent: #5a8a6a; }
.meeting-card[data-index="3"]  { --accent: #4a7a5a; }
.meeting-card[data-index="4"]  { --accent: #6a9b72; }
.meeting-card[data-index="5"]  { --accent: #3a5e42; }
.meeting-card[data-index="6"]  { --accent: #5e8a5e; }
.meeting-card[data-index="7"]  { --accent: #4e7a60; }
.meeting-card[data-index="8"]  { --accent: #6e9b78; }
.meeting-card[data-index="9"]  { --accent: #426e4a; }
.meeting-card[data-index="10"] { --accent: #5a8060; }

.card-top {
  padding: 22px 22px 16px;
  border-top: 3px solid var(--accent, #3d6b44);
  flex: 1;
}

.card-meta-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
}

.host-name {
  font-size: 12px;
  font-weight: 500;
  color: #7a9a7c;
  letter-spacing: 0.04em;
}

.seat-badge {
  font-size: 11px;
  font-weight: 700;
  color: var(--accent, #3d6b44);
  background-color: color-mix(in srgb, var(--accent, #3d6b44) 10%, transparent);
  border: 1px solid color-mix(in srgb, var(--accent, #3d6b44) 28%, transparent);
  padding: 2px 10px;
  border-radius: 12px;
  letter-spacing: 0.03em;
}

.special-seat {
  background-color: #fff8ec;
  color: #b8761a;
  border-color: #f0c882;
}

.card-title {
  font-family: 'Noto Serif KR', serif;
  font-size: 18px;
  font-weight: 700;
  color: #1e2b1e;
  margin-bottom: 8px;
  line-height: 1.4;
  letter-spacing: -0.01em;
}

.card-theme {
  font-size: 13px;
  color: #5a6e5c;
  line-height: 1.65;
  font-weight: 300;
}

.regular-badge {
  display: inline-block;
  margin-top: 10px;
  font-size: 11px;
  color: #6a8a6c;
  background: #edf5ec;
  padding: 3px 10px;
  border-radius: 10px;
  letter-spacing: 0.02em;
}

.card-bottom {
  padding: 14px 22px 18px;
  background: #f6faf5;
  border-top: 1px solid #ddebd8;
}

/* ===========================
   SCHEDULE LIST
=========================== */
.schedule-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 14px;
}

.schedule-item {
  display: flex;
  align-items: flex-start;
  gap: 8px;
}

.schedule-no {
  font-size: 11px;
  font-weight: 700;
  color: var(--accent, #3d6b44);
  flex-shrink: 0;
  margin-top: 1px;
}

.schedule-text {
  font-size: 13px;
  color: #3a4e3c;
  font-weight: 400;
  letter-spacing: 0.01em;
}

/* ===========================
   CARD FOOTER ROW
=========================== */
.card-footer-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.fee-tag {
  font-family: 'Noto Serif KR', serif;
  font-size: 16px;
  font-weight: 700;
  color: #1e2b1e;
}

.apply-btn {
  display: inline-block;
  font-family: 'Noto Sans KR', sans-serif;
  font-size: 13px;
  font-weight: 700;
  color: #f2f5f0;
  background-color: var(--accent, #3d6b44);
  padding: 8px 18px;
  border-radius: 8px;
  text-decoration: none;
  letter-spacing: 0.04em;
  transition: opacity 0.18s ease, transform 0.18s ease;
}

.apply-btn:hover {
  opacity: 0.85;
  transform: scale(1.03);
}

/* ===========================
   ANIMATION
=========================== */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.meeting-card:nth-child(1)  { animation-delay: 0.05s; }
.meeting-card:nth-child(2)  { animation-delay: 0.10s; }
.meeting-card:nth-child(3)  { animation-delay: 0.15s; }
.meeting-card:nth-child(4)  { animation-delay: 0.20s; }
.meeting-card:nth-child(5)  { animation-delay: 0.25s; }
.meeting-card:nth-child(6)  { animation-delay: 0.30s; }
.meeting-card:nth-child(7)  { animation-delay: 0.35s; }
.meeting-card:nth-child(8)  { animation-delay: 0.40s; }
.meeting-card:nth-child(9)  { animation-delay: 0.45s; }
.meeting-card:nth-child(10) { animation-delay: 0.50s; }

/* ===========================
   FOOTER
=========================== */
#site-footer {
  text-align: center;
  padding: 28px 16px;
  border-top: 1px solid #d0dece;
  background-color: #f2f5f0;
}

.footer-text {
  font-size: 12px;
  color: #7a9a7c;
  letter-spacing: 0.04em;
}

/* ===========================
   RESPONSIVE
=========================== */
@media (max-width: 600px) {
  #site-header {
    padding: 44px 20px 36px;
  }

  .site-title {
    font-size: 24px;
  }

  #filter-bar {
    gap: 6px;
    padding: 14px 12px;
  }

  .filter-btn {
    font-size: 12px;
    padding: 7px 14px;
  }

  #main-content {
    padding: 28px 14px 60px;
  }

  .cards-grid {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .card-title {
    font-size: 16px;
  }
}

/* 날짜순 레이아웃 - venue-tag */
.venue-tag {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  padding: 3px 9px;
  border-radius: 20px;
  margin-top: 8px;
}
.seminar-tag {
  background: #fff3e0;
  color: #e65100;
}
.table-tag {
  background: #e8f5e9;
  color: #2e7d32;
}

/* ── 포스터 썸네일 ── */
.poster-thumb {
  position: relative;
  width: 100%;
  height: 180px;
  overflow: hidden;
  border-radius: 10px 10px 0 0;
  cursor: pointer;
}
.poster-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
  display: block;
}
.poster-thumb:hover .poster-img {
  transform: scale(1.04);
}
.poster-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.35);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 0.25s;
  border-radius: 10px 10px 0 0;
}
.poster-thumb:hover .poster-overlay {
  opacity: 1;
}
.poster-overlay span {
  color: #fff;
  font-size: 14px;
  font-weight: 700;
  background: rgba(0,0,0,0.5);
  padding: 6px 16px;
  border-radius: 20px;
}
.has-poster {
  padding: 0 !important;
  overflow: hidden;
}
.has-poster .card-top,
.has-poster .card-bottom {
  padding: 14px 18px;
}

/* ── 라이트박스 ── */
#lightbox {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.85);
  z-index: 1000;
  align-items: center;
  justify-content: center;
  padding: 20px;
}
#lightbox.active {
  display: flex;
}
.lightbox-inner {
  position: relative;
  max-width: 90vw;
  max-height: 90vh;
}
#lightbox-img {
  max-width: 100%;
  max-height: 88vh;
  border-radius: 10px;
  box-shadow: 0 8px 40px rgba(0,0,0,0.6);
  display: block;
}
.lightbox-close {
  position: absolute;
  top: -14px;
  right: -14px;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  border: none;
  background: #fff;
  color: #333;
  font-size: 16px;
  font-weight: 700;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 2px 8px rgba(0,0,0,0.3);
  z-index: 10;
}