:root {
  font-family: "Segoe UI", "Hiragino Kaku Gothic ProN", Meiryo, sans-serif;
  font-size: 14px;
}

body {
  margin: 0;
  background: #f5f7fb;
  color: #1e2430;
}

header, main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 12px;
}

h1, h2 {
  margin: 4px 0 8px;
}

details {
  border: 1px solid #d7dce6;
  background: #fff;
  border-radius: 6px;
  margin-bottom: 8px;
}

summary {
  cursor: pointer;
  font-weight: 600;
  padding: 8px;
  background: #eef2f8;
}

.grid, .sub-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(220px, 1fr));
  gap: 6px;
  padding: 8px;
}

.sub-grid {
  border-top: 1px dashed #d7dce6;
}

.full {
  grid-column: 1 / -1;
}

label {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 12px;
}

input, select, textarea, button {
  font: inherit;
  padding: 6px;
  border: 1px solid #c7cfdb;
  border-radius: 4px;
  background: #fff;
}

textarea {
  min-height: 54px;
  resize: vertical;
}

.badge {
  font-size: 10px;
  padding: 1px 6px;
  border-radius: 999px;
  margin-left: 4px;
}

.badge.required {
  background: #ffe4e4;
  color: #a10000;
}

.actions {
  display: flex;
  gap: 8px;
  margin: 12px 0;
}

.sticky-panel {
  position: sticky;
  top: 0;
  z-index: 3;
  background: #ffffffee;
  backdrop-filter: blur(2px);
  border: 1px solid #d7dce6;
  border-radius: 6px;
  margin-bottom: 8px;
}

.panel-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px;
  border-bottom: 1px solid #e2e7f0;
}

.panel-body {
  max-height: 200px;
  overflow: auto;
}

#form-error {
  font-weight: 600;
  min-height: 20px;
}

#form-error.error {
  color: #a10000;
}

#form-error.success {
  color: #0a6a2f;
}

table {
  border-collapse: collapse;
  width: 100%;
  background: #fff;
}

th, td {
  border: 1px solid #dfe4ee;
  padding: 4px 6px;
  text-align: left;
  vertical-align: top;
}

@media (max-width: 900px) {
  .grid, .sub-grid {
    grid-template-columns: 1fr;
  }
}