:root {
  --color-bg: #f5f7f9;
  --color-surface: #ffffff;
  --color-border: #d9e0e5;
  --color-text: #1f2933;
  --color-text-muted: #5c6b73;
  --color-primary: #1b6ca8;
  --color-primary-dark: #144f7d;
  --color-danger: #b3261e;
  --color-accent: #2f8f6f;
  --radius: 8px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Hiragino Kaku Gothic ProN", "Yu Gothic", "Segoe UI", sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  padding-bottom: 3rem;
}

.app-header {
  background: var(--color-primary-dark);
  color: #fff;
  padding: 1.25rem 1.5rem 1rem;
}
.app-header h1 { margin: 0 0 0.25rem; font-size: 1.3rem; }
.app-header .subtitle { margin: 0; font-size: 0.85rem; opacity: 0.85; }

.tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem;
  background: var(--color-surface);
  padding: 0.5rem 1rem;
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 10;
}

.tab-btn {
  border: none;
  background: transparent;
  padding: 0.5rem 0.9rem;
  border-radius: var(--radius);
  cursor: pointer;
  font-size: 0.9rem;
  color: var(--color-text-muted);
}
.tab-btn:hover { background: #eef2f4; }
.tab-btn.active {
  background: var(--color-primary);
  color: #fff;
  font-weight: 600;
}

main { max-width: 900px; margin: 0 auto; padding: 1rem 1.25rem 2rem; }

.tab-panel { display: none; }
.tab-panel.active { display: block; }

.panel-desc { color: var(--color-text-muted); font-size: 0.88rem; margin: 0.25rem 0 1rem; }

.panel-toolbar {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-bottom: 1rem;
}

#term-search {
  flex: 1;
  min-width: 180px;
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-size: 0.9rem;
}

.btn {
  border: none;
  border-radius: var(--radius);
  padding: 0.5rem 0.9rem;
  font-size: 0.85rem;
  cursor: pointer;
  white-space: nowrap;
}
.btn-primary { background: var(--color-primary); color: #fff; }
.btn-primary:hover { background: var(--color-primary-dark); }
.btn-secondary { background: #e3e9ec; color: var(--color-text); }
.btn-secondary:hover { background: #d3dbe0; }
.btn-danger { background: #fff; color: var(--color-danger); border: 1px solid var(--color-danger); }
.btn-danger:hover { background: #fdecea; }
.btn-small { padding: 0.3rem 0.6rem; font-size: 0.78rem; }
.file-label { display: inline-flex; align-items: center; }

.card-list { display: flex; flex-direction: column; gap: 0.75rem; }

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 0.9rem 1rem;
}

.card-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 0.5rem;
}

.card-title { font-weight: 700; font-size: 1rem; margin: 0; }
.card-meta { font-size: 0.75rem; color: var(--color-text-muted); margin: 0.15rem 0 0; }
.card-badge {
  display: inline-block;
  font-size: 0.72rem;
  background: #e6f0f7;
  color: var(--color-primary-dark);
  border-radius: 999px;
  padding: 0.1rem 0.55rem;
  margin-right: 0.35rem;
}
.card-body { margin-top: 0.5rem; font-size: 0.9rem; white-space: pre-wrap; }
.card-actions { display: flex; gap: 0.4rem; flex-shrink: 0; }

.form-box {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1rem;
  margin-bottom: 1rem;
}
.form-row { margin-bottom: 0.6rem; display: flex; flex-direction: column; gap: 0.25rem; }
.form-row label { font-size: 0.8rem; color: var(--color-text-muted); }
.form-row input, .form-row textarea, .form-row select {
  padding: 0.5rem 0.6rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-size: 0.9rem;
  font-family: inherit;
}
.form-row textarea { resize: vertical; }
.form-actions { display: flex; gap: 0.5rem; justify-content: flex-end; }

.category-block {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  margin-bottom: 1rem;
  overflow: hidden;
}
.category-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.6rem 0.9rem;
  background: #eef4f7;
  cursor: pointer;
}
.category-header h2 { margin: 0; font-size: 0.98rem; }
.category-header .category-actions { display: flex; gap: 0.4rem; }
.category-body { padding: 0.8rem 0.9rem; display: flex; flex-direction: column; gap: 0.7rem; }
.category-block.collapsed .category-body { display: none; }
.category-count { color: var(--color-text-muted); font-size: 0.78rem; margin-left: 0.4rem; }

.inline-form { display: flex; gap: 0.5rem; margin-bottom: 1rem; }
.inline-form textarea {
  flex: 1;
  padding: 0.5rem 0.6rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-family: inherit;
  font-size: 0.9rem;
  resize: vertical;
}

.scratch-status {
  display: inline-block;
  font-size: 0.72rem;
  border-radius: 999px;
  padding: 0.1rem 0.55rem;
  margin-right: 0.35rem;
}
.scratch-status.open { background: #fdecea; color: var(--color-danger); }
.scratch-status.resolved { background: #e8f5ee; color: var(--color-accent); }

.empty-hint { color: var(--color-text-muted); font-size: 0.85rem; padding: 0.5rem 0; }
.empty-hint .btn { margin-top: 0.5rem; }

mark { background: #fff1a8; color: inherit; border-radius: 3px; padding: 0 0.1em; }

.personal-note {
  margin-top: 0.6rem;
  padding: 0.5rem 0.7rem;
  background: #fff8e6;
  border: 1px solid #f0dfa8;
  border-left: 3px solid var(--color-accent);
  border-radius: 6px;
  font-size: 0.88rem;
  white-space: pre-wrap;
}
.personal-note-label {
  display: block;
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--color-accent);
  margin-bottom: 0.2rem;
}

.card-image {
  display: block;
  max-width: 100%;
  margin-top: 0.6rem;
  border-radius: 6px;
  border: 1px solid var(--color-border);
}

.image-preview-wrap { margin-top: 0.5rem; }
.image-preview-wrap img {
  display: block;
  max-width: 100%;
  max-height: 220px;
  border-radius: 6px;
  border: 1px solid var(--color-border);
  margin-bottom: 0.4rem;
}

.data-actions { display: flex; gap: 0.6rem; flex-wrap: wrap; margin-bottom: 1rem; }
.data-status { font-size: 0.85rem; color: var(--color-text-muted); }

.toast {
  position: fixed;
  bottom: 1.2rem;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-text);
  color: #fff;
  padding: 0.55rem 1.1rem;
  border-radius: 999px;
  font-size: 0.85rem;
  box-shadow: 0 2px 10px rgba(0,0,0,0.2);
}

@media (max-width: 480px) {
  main { padding: 0.75rem; }
  .card-head { flex-direction: column; }
  .card-actions { flex-wrap: wrap; }
}