:root{--bg-color:#f7f3eb;--wood-brown:#5d3d28;--wood-dark:#3d2612;--wood-light:#f3e9d9;--text-color:#2b1810;--receipt-bg:#fffef8;--accent-green:#2e7d32}*{box-sizing:border-box;margin:0;padding:0}body{background-color:var(--bg-color);background-image:radial-gradient(#d5cbbd 1.5px, transparent 1.5px), radial-gradient(#d5cbbd 1.5px, var(--bg-color) 1.5px);color:var(--text-color);background-position:0 0,10px 10px;background-size:20px 20px;flex-direction:column;align-items:center;min-height:100vh;padding:20px 15px;font-family:DotGothic16,monospace,sans-serif;display:flex}header{justify-content:space-between;align-items:center;width:100%;max-width:520px;margin-bottom:20px;display:flex}.back-btn{background-color:var(--wood-light);color:var(--wood-brown);border:2px solid var(--wood-brown);box-shadow:2px 2px 0px 0px var(--wood-brown);border-radius:6px;padding:6px 12px;font-size:.85rem;font-weight:700;text-decoration:none}.back-btn:active{box-shadow:1px 1px 0px 0px var(--wood-brown);transform:translate(1px,1px)}main{border:4px solid var(--wood-dark);width:100%;max-width:520px;box-shadow:6px 6px 0px 0px var(--wood-dark);background-color:#fff;border-radius:12px;padding:20px}h1{text-align:center;color:var(--wood-brown);margin-bottom:5px;font-size:1.35rem}.sub-title{color:#718096;text-align:center;margin-bottom:15px;font-size:.85rem}.add-form{grid-template-columns:1fr 88px 56px auto;gap:8px;margin-bottom:10px;display:grid}.add-form input[type=text],.add-form input[type=number],.price-input{border:2px solid var(--wood-brown);color:var(--text-color);background:#fff;border-radius:8px;min-width:0;padding:10px 12px;font-family:inherit;font-size:.9rem}.price-input{text-align:right;cursor:pointer;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 14 14'%3E%3Crect x='1' y='2' width='12' height='10' rx='1' fill='none' stroke='%235d3d28' stroke-width='1.2'/%3E%3Crect x='3' y='4' width='8' height='2' fill='%235d3d28'/%3E%3Crect x='3' y='7' width='2' height='2' fill='%235d3d28'/%3E%3Crect x='6' y='7' width='2' height='2' fill='%235d3d28'/%3E%3Crect x='9' y='7' width='2' height='2' fill='%235d3d28'/%3E%3C/svg%3E");background-position:right 8px center;background-repeat:no-repeat;width:100%;padding-right:28px}.price-input:focus{outline:none;box-shadow:0 0 0 2px #5d3d2833}.add-form input[type=number]{text-align:right;appearance:textfield;padding:10px 8px}.add-form input[type=number]::-webkit-outer-spin-button{-webkit-appearance:none;margin:0}.add-form input[type=number]::-webkit-inner-spin-button{-webkit-appearance:none;margin:0}.add-btn{background-color:var(--accent-green);color:#fff;cursor:pointer;white-space:nowrap;border:2px solid #1b5e20;border-radius:8px;padding:8px 14px;font-family:inherit;font-size:.85rem;font-weight:700;box-shadow:2px 2px #1b5e20}.add-btn:active{transform:translate(1px,1px);box-shadow:1px 1px #1b5e20}.field-labels{color:#8b7355;grid-template-columns:1fr 88px 56px auto;gap:8px;margin-bottom:4px;font-size:.68rem;display:grid}.field-labels span:nth-child(4){visibility:hidden}.quick-add{flex-wrap:wrap;gap:6px;margin-bottom:14px;display:flex}.quick-btn{color:var(--wood-brown);cursor:pointer;background:#fff;border:2px solid #c9b89a;border-radius:999px;padding:4px 10px;font-family:inherit;font-size:.75rem}.quick-btn:active{background:var(--wood-light)}.calc-overlay{z-index:1000;backdrop-filter:blur(2px);background:#3d261247;justify-content:center;align-items:center;padding:20px;display:flex;position:fixed;inset:0}.calc-overlay[hidden]{display:none!important}.calc-popup{background:linear-gradient(180deg, #fffef9 0%, var(--wood-light) 100%);border:3px solid var(--wood-brown);width:min(220px,92vw);box-shadow:0 10px 24px #3d261238, 4px 4px 0 var(--wood-dark);opacity:0;border-radius:14px;padding:12px 12px 10px;transition:transform .18s,opacity .18s;transform:scale(.92)translateY(8px)}.calc-overlay.is-open .calc-popup{opacity:1;transform:scale(1)translateY(0)}.calc-head{justify-content:space-between;align-items:center;margin-bottom:8px;display:flex}.calc-title{color:var(--wood-brown);letter-spacing:.04em;font-size:.78rem}.calc-close{width:24px;height:24px;color:var(--wood-brown);cursor:pointer;background:#fff;border:2px solid #c9b89a;border-radius:50%;padding:0;font-family:inherit;font-size:.85rem;line-height:1;box-shadow:0 2px #b8aa96}.calc-close:active{transform:translateY(1px);box-shadow:0 1px #b8aa96}.calc-display{border:2px solid var(--wood-brown);text-align:right;min-height:36px;color:var(--accent-green);background:#fff;border-radius:8px;margin-bottom:8px;padding:8px 10px;font-size:1.15rem;line-height:1.2}.calc-display:before{content:"¥";float:left;color:#8b7355;margin-top:4px;font-size:.72rem}.calc-keys{grid-template-columns:repeat(3,1fr);gap:5px;display:grid}.calc-key{color:var(--wood-dark);cursor:pointer;background:#fff;border:2px solid #d5cbbd;border-radius:8px;padding:9px 4px;font-family:inherit;font-size:.88rem;box-shadow:0 2px #c9b89a}.calc-key:active{transform:translateY(1px);box-shadow:0 1px #c9b89a}.calc-key-wide{grid-column:span 2}.calc-key-action{color:var(--wood-brown);background:#fff8e7;font-size:.78rem}.calc-key-ok{background:var(--accent-green);color:#fff;border-color:#1b5e20;font-size:.82rem;box-shadow:0 2px #1b5e20}.calc-key-ok:active{box-shadow:0 1px #1b5e20}.receipt{background:var(--receipt-bg);border:2px dashed #c9b89a;border-radius:4px;min-height:200px;padding:14px 12px 12px;position:relative;box-shadow:inset 0 1px #fffc}.receipt:before{content:"";background:repeating-linear-gradient(-45deg,#0000,#0000 4px,#c9b89a59 4px 8px);height:8px;position:absolute;top:0;left:0;right:0}.receipt-head{text-align:center;color:#8b7355;border-bottom:1px dotted #c9b89a;margin-bottom:10px;padding-bottom:8px;font-size:.78rem}.item-list{flex-direction:column;gap:8px;list-style:none;display:flex}.item-row{border-bottom:1px dotted #c9b89a99;grid-template-columns:1fr auto auto;align-items:center;gap:8px;padding:6px 0;font-size:.88rem;display:grid}.item-name{word-break:break-word;line-height:1.3}.item-qty{color:#8b7355;white-space:nowrap;font-size:.75rem}.item-price{white-space:nowrap;text-align:right;min-width:72px;font-weight:700}.item-delete{color:#a08070;cursor:pointer;background:0 0;border:none;grid-column:1/-1;justify-self:end;margin-top:-4px;padding:0;font-family:inherit;font-size:.72rem}.item-delete:hover{color:var(--wood-brown)}.empty-state{text-align:center;color:#a09080;padding:36px 10px;font-size:.85rem;line-height:1.7}.empty-state[hidden]{display:none!important}.total-bar{border-top:2px solid var(--wood-brown);justify-content:space-between;align-items:baseline;gap:12px;margin-top:12px;padding-top:10px;display:flex}.total-label{color:var(--wood-brown);font-size:.85rem}.total-count{color:#8b7355;font-size:.72rem}.total-amount{color:var(--accent-green);letter-spacing:.02em;font-size:1.5rem;font-weight:700}.toolbar{justify-content:flex-end;margin-top:10px;display:flex}.clear-btn{color:#a08070;cursor:pointer;background:#fff;border:2px solid #d5cbbd;border-radius:6px;padding:5px 12px;font-family:inherit;font-size:.75rem}.clear-btn:active{background:var(--wood-light)}.data-notice{color:#a09080;text-align:center;margin-top:14px;font-size:.72rem;line-height:1.6}@media (width<=420px){.add-form,.field-labels{grid-template-columns:1fr 1fr}.add-form input[type=text],.add-btn,.field-labels span:first-child{grid-column:1/-1}.field-labels span:nth-child(4){display:none}}