* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif; background: #f5f5f5; color: #333; }
header { background: #1a1a2e; color: #fff; padding: 1rem 2rem; display: flex; justify-content: space-between; align-items: center; }
header h1 { font-size: 1.2rem; font-weight: 600; }
.header-right { display: flex; gap: 1rem; align-items: center; font-size: 0.85rem; }
.version { opacity: 0.6; }
#logout-btn { background: transparent; border: 1px solid rgba(255,255,255,0.3); color: #fff; padding: 0.3rem 0.8rem; border-radius: 4px; cursor: pointer; }
#logout-btn:hover { background: rgba(255,255,255,0.1); }
.controls { padding: 1rem 2rem; display: flex; gap: 1rem; align-items: center; background: #fff; border-bottom: 1px solid #e0e0e0; }
.controls input[type="text"] { flex: 1; padding: 0.5rem 0.8rem; border: 1px solid #ddd; border-radius: 4px; font-size: 0.9rem; }
.controls select { padding: 0.5rem; border: 1px solid #ddd; border-radius: 4px; }
.loading { text-align: center; padding: 3rem; color: #666; }
.books-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 1rem; padding: 1.5rem 2rem; }
.book-card { background: #fff; border-radius: 8px; padding: 1rem; box-shadow: 0 1px 3px rgba(0,0,0,0.1); cursor: pointer; transition: transform 0.1s; border-left: 4px solid #ddd; }
.book-card:hover { transform: translateY(-2px); box-shadow: 0 4px 12px rgba(0,0,0,0.15); }
.book-card.published { border-left-color: #4caf50; }
.book-card.pending { border-left-color: #ff9800; }
.book-card .title { font-weight: 600; font-size: 0.9rem; margin-bottom: 0.3rem; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.book-card .isbn { font-size: 0.75rem; color: #888; }
.book-card .meta { font-size: 0.8rem; color: #666; margin-top: 0.3rem; }
.book-card .price { color: #2196f3; font-weight: 600; }
.book-card .sales { color: #4caf50; }
.book-detail { padding: 2rem; max-width: 800px; margin: 0 auto; }
.book-detail.hidden { display: none; }
.back-btn { background: #1a1a2e; color: #fff; border: none; padding: 0.5rem 1rem; border-radius: 4px; cursor: pointer; margin-bottom: 1rem; }
.detail-card { background: #fff; border-radius: 8px; padding: 1.5rem; box-shadow: 0 1px 3px rgba(0,0,0,0.1); }
.detail-card h2 { margin-bottom: 0.5rem; }
.detail-card .field { margin: 0.5rem 0; }
.detail-card .field label { font-weight: 600; color: #555; min-width: 100px; display: inline-block; }
.btn-pending { background: #ff9800; color: #fff; border: none; padding: 0.5rem 1rem; border-radius: 4px; cursor: pointer; margin-top: 1rem; }
.btn-pending:hover { background: #f57c00; }
.thumbnail { width: 120px; height: auto; border-radius: 4px; float: right; margin-left: 1rem; }