*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--color-bg: #f8f9fa;--color-surface: #ffffff;--color-primary: #5c6bc0;--color-primary-hover: #3f51b5;--color-danger: #ef5350;--color-danger-hover: #e53935;--color-text: #212529;--color-text-muted: #6c757d;--color-border: #dee2e6;--color-tag: #e8eaf6;--radius: 8px;--shadow: 0 1px 3px rgba(0, 0, 0, .1)}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--color-bg);color:var(--color-text);line-height:1.6}a{color:var(--color-primary);text-decoration:none}a:hover{text-decoration:underline}button{cursor:pointer;border:none;border-radius:var(--radius);padding:8px 16px;font-size:14px;font-family:inherit;transition:background .15s}.btn-primary{background:var(--color-primary);color:#fff}.btn-primary:hover{background:var(--color-primary-hover)}.btn-danger{background:var(--color-danger);color:#fff}.btn-danger:hover{background:var(--color-danger-hover)}.btn-secondary{background:var(--color-border);color:var(--color-text)}.btn-secondary:hover{background:#ced4da}input[type=text],input[type=url],input[type=number],textarea,select{width:100%;padding:8px 12px;border:1px solid var(--color-border);border-radius:var(--radius);font-size:14px;font-family:inherit}input:focus,textarea:focus,select:focus{outline:none;border-color:var(--color-primary);box-shadow:0 0 0 2px #5c6bc033}.layout{display:flex;min-height:calc(100vh - 57px)}.sidebar{width:240px;background:var(--color-surface);border-right:1px solid var(--color-border);padding:20px;flex-shrink:0;overflow-y:auto}.sidebar h2{font-size:14px;text-transform:uppercase;color:var(--color-text-muted);margin-bottom:12px}.sidebar-overlay{display:none}.sidebar-toggle{display:none;background:none;font-size:22px;padding:4px 8px;color:var(--color-text)}.main-content{flex:1;padding:24px;max-width:1200px;min-width:0}.header{display:flex;justify-content:space-between;align-items:center;padding:12px 16px;background:var(--color-surface);border-bottom:1px solid var(--color-border);width:100%}.header-left{display:flex;align-items:center;gap:8px}.header h1{font-size:24px;color:var(--color-primary)}@media(max-width:768px){.sidebar-toggle{display:block}.sidebar{position:fixed;top:0;left:0;bottom:0;z-index:200;transform:translate(-100%);transition:transform .25s ease;box-shadow:none;width:260px}.sidebar.open{transform:translate(0);box-shadow:4px 0 16px #00000026}.sidebar-overlay{display:block;position:fixed;top:0;right:0;bottom:0;left:0;background:#0000004d;z-index:150}.main-content{padding:16px}.header{padding:12px 16px}.header h1{font-size:20px}}.item-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:16px;margin-top:16px}@media(max-width:480px){.item-grid{grid-template-columns:1fr;gap:12px}}.item-card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:box-shadow .15s}.item-card:hover{box-shadow:0 4px 12px #00000026}.item-card-image{width:100%;height:200px;object-fit:cover;background:var(--color-bg)}.item-card-image-placeholder{width:100%;height:200px;background:var(--color-bg);display:flex;align-items:center;justify-content:center;color:var(--color-text-muted);font-size:48px}.item-card-body{padding:16px}.item-card-body h3{font-size:18px;margin-bottom:4px}.item-card-body .quantity{color:var(--color-text-muted);font-size:14px;margin-bottom:8px}.item-card-body .quantity.low{color:var(--color-danger);font-weight:600}.tags{display:flex;flex-wrap:wrap;gap:6px}.tag-badge{display:inline-block;padding:2px 10px;background:var(--color-tag);color:var(--color-primary);border-radius:12px;font-size:12px;font-weight:500}.search-bar{margin-bottom:16px}.search-bar input{max-width:400px}@media(max-width:768px){.search-bar input{max-width:100%}}.tag-filter label{display:flex;align-items:center;gap:8px;padding:4px 0;font-size:14px;cursor:pointer}.tag-filter input[type=checkbox]{width:auto}.form-page{max-width:600px}.form-group{margin-bottom:16px}.form-group label{display:block;font-weight:600;margin-bottom:4px;font-size:14px}.form-actions{display:flex;gap:8px;margin-top:24px}.image-upload-area{border:2px dashed var(--color-border);border-radius:var(--radius);padding:24px;text-align:center;cursor:pointer;transition:border-color .15s}.image-upload-area:hover{border-color:var(--color-primary)}.image-upload-area.has-image{border-style:solid;padding:8px}.image-upload-preview{max-width:100%;max-height:300px;border-radius:4px}.item-detail{max-width:800px}.item-detail-image{max-width:100%;max-height:400px;border-radius:var(--radius);margin-bottom:16px}.item-detail-meta{display:flex;flex-wrap:wrap;gap:12px 24px;margin-bottom:16px;color:var(--color-text-muted);font-size:14px}.item-detail-actions{display:flex;flex-wrap:wrap;gap:8px;margin-top:24px}.dialog-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#0006;display:flex;align-items:center;justify-content:center;z-index:100}.dialog{background:var(--color-surface);border-radius:var(--radius);padding:24px;max-width:400px;width:90%;box-shadow:0 8px 32px #0003}.dialog h3{margin-bottom:8px}.dialog p{color:var(--color-text-muted);margin-bottom:16px}.dialog-actions{display:flex;gap:8px;justify-content:flex-end}.pagination{display:flex;gap:8px;justify-content:center;margin-top:24px;align-items:center}.pagination span{font-size:14px;color:var(--color-text-muted)}.empty-state{text-align:center;padding:48px 24px;color:var(--color-text-muted)}.empty-state h3{margin-bottom:8px}.loading{text-align:center;padding:48px;color:var(--color-text-muted)}