.poster-grid {
  border: 1px solid #e7efed;
  border-radius: 10px;
  overflow: auto;
  background: #fff;
  margin-bottom: 10px;
}

.poster-grid table {
  min-width: 620px;
}

.poster-cell {
  min-height: 70px;
  font-size: 0.76rem;
}

.poster-session-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(290px, 1fr));
  gap: 12px;
  min-width: 0;
}

.poster-session-card {
  border: 1px solid #e1ece8;
  border-radius: 14px;
  background: linear-gradient(145deg, #ffffff, #f4fbf9);
  overflow: hidden;
  box-shadow: 0 8px 18px rgba(24, 48, 67, 0.06);
}

.poster-session-head {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  align-items: flex-start;
  padding: 10px 12px;
  border-bottom: 1px solid #e7f0ee;
  background: rgba(255, 255, 255, 0.9);
}

.poster-session-head h3 {
  margin: 0;
  font-size: 0.9rem;
}

.poster-session-head .tiny {
  margin-top: 3px;
}

.poster-layout-shell {
  padding: 12px;
  overflow: auto;
  max-width: 100%;
}

.poster-layout {
  width: 100%;
}

.poster-layout.poster-layout-line {
  display: grid;
  gap: 8px;
}

.poster-layout.poster-layout-rectangle {
  display: grid;
  gap: 8px;
}

.poster-layout.poster-layout-circle {
  position: relative;
  min-height: 240px;
  border-radius: 20px;
  background:
    radial-gradient(circle at center, rgba(19, 143, 139, 0.09) 0, rgba(19, 143, 139, 0.09) 28%, transparent 29%),
    radial-gradient(circle at center, rgba(19, 143, 139, 0.08) 0, rgba(19, 143, 139, 0.08) 63%, transparent 64%);
}

.poster-board {
  border: 1px solid #dbe8e4;
  border-radius: 12px;
  background: #fff;
  color: var(--ink);
  padding: 8px;
  min-height: 82px;
  display: grid;
  gap: 3px;
  align-content: start;
  text-align: left;
  font-size: 0.74rem;
}

.poster-board strong {
  font-size: 0.75rem;
}

.poster-board.is-empty {
  background: #f7fbfa;
  color: #6d8290;
  border-style: dashed;
}

.poster-board.circle-board {
  position: absolute;
  width: 86px;
  min-height: 86px;
  transform: translate(-50%, -50%);
  padding: 7px;
}

.poster-legend {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  align-items: center;
  padding: 0 12px 12px;
}