:root{--primary-color: #d32f2f;--primary-light: #ff6659;--primary-dark: #9a0007;--secondary-color: #1976d2;--secondary-light: #63a4ff;--secondary-dark: #004ba0;--success-color: #388e3c;--warning-color: #f57c00;--error-color: #d32f2f;--background-color: #f5f5f5;--surface-color: #ffffff;--text-primary: #212121;--text-secondary: #757575;--border-color: #e0e0e0}*{margin:0;padding:0;box-sizing:border-box}body{font-family:Helvetica Neue,Arial,Hiragino Kaku Gothic ProN,Hiragino Sans,Meiryo,sans-serif;line-height:1.6;color:var(--text-primary);background-color:var(--background-color)}.container{max-width:1200px;margin:0 auto;padding:0 16px}.btn{display:inline-block;padding:12px 24px;background-color:var(--primary-color);color:#fff;text-decoration:none;border:none;border-radius:8px;cursor:pointer;font-size:16px;font-weight:600;text-align:center;transition:all .2s}.btn:hover{background-color:var(--primary-dark);transform:translateY(-1px)}.btn:active{transform:translateY(0)}.btn-secondary{background-color:var(--secondary-color)}.btn-secondary:hover{background-color:var(--secondary-dark)}.btn-success{background-color:var(--success-color)}.btn-outline{background-color:transparent;color:var(--primary-color);border:2px solid var(--primary-color)}.btn-outline:hover{background-color:var(--primary-color);color:#fff}.card{background:var(--surface-color);border-radius:12px;padding:24px;box-shadow:0 2px 8px #0000001a;margin-bottom:16px}.form-group{margin-bottom:16px}.form-label{display:block;margin-bottom:8px;font-weight:600;color:var(--text-primary)}.form-input{width:100%;padding:12px 16px;border:2px solid var(--border-color);border-radius:8px;font-size:16px;transition:border-color .2s}.form-input:focus{outline:none;border-color:var(--primary-color)}.form-select{width:100%;padding:12px 16px;border:2px solid var(--border-color);border-radius:8px;font-size:16px;background:white;cursor:pointer}.grid{display:grid;gap:16px}.grid-2{grid-template-columns:repeat(auto-fit,minmax(300px,1fr))}.grid-3{grid-template-columns:repeat(auto-fit,minmax(250px,1fr))}.grid-4{grid-template-columns:repeat(auto-fill,minmax(200px,1fr))}.text-center{text-align:center}.text-success{color:var(--success-color)}.text-error{color:var(--error-color)}.text-warning{color:var(--warning-color)}.mt-1{margin-top:8px}.mt-2{margin-top:16px}.mt-3{margin-top:24px}.mb-1{margin-bottom:8px}.mb-2{margin-bottom:16px}.mb-3{margin-bottom:24px}.p-1{padding:8px}.p-2{padding:16px}.p-3{padding:24px}.header{background:var(--surface-color);box-shadow:0 2px 4px #0000001a;position:sticky;top:0;z-index:100}.header .container{display:flex;justify-content:space-between;align-items:center;padding:16px}.logo{font-size:24px;font-weight:700;color:var(--primary-color);text-decoration:none}.nav{display:flex;gap:16px;align-items:center}.nav a{text-decoration:none;color:var(--text-primary);font-weight:500;padding:8px 16px;border-radius:8px;transition:background-color .2s}.nav a:hover,.nav a.active{background-color:var(--background-color)}.stamp-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(120px,1fr));gap:16px;margin:24px 0}.stamp-item{background:var(--surface-color);border-radius:12px;padding:16px;text-align:center;border:3px solid var(--border-color);transition:all .2s}.stamp-item.collected{border-color:var(--success-color);background:#e8f5e8}.stamp-image{width:60px;height:60px;margin:0 auto 8px;background:var(--background-color);border-radius:50%;display:flex;align-items:center;justify-content:center}.stamp-image img{max-width:40px;max-height:40px}.stamp-name{font-size:14px;font-weight:600;margin-bottom:4px}.stamp-count{font-size:12px;color:var(--text-secondary)}.modal{position:fixed;top:0;left:0;right:0;bottom:0;background:rgba(0,0,0,.5);display:flex;align-items:center;justify-content:center;z-index:1000}.modal-content{background:var(--surface-color);border-radius:12px;padding:24px;max-width:90vw;max-height:90vh;overflow:auto}.loading{display:inline-block;width:20px;height:20px;border:3px solid var(--border-color);border-radius:50%;border-top-color:var(--primary-color);animation:spin 1s ease-in-out infinite}@keyframes spin{to{transform:rotate(360deg)}}.table{width:100%;border-collapse:collapse}.table th{padding:12px;text-align:left;background-color:var(--background-color);border-bottom:2px solid var(--border-color);font-weight:600}.table td{padding:12px;border-bottom:1px solid var(--border-color)}.table-responsive{overflow-x:auto}.badge{display:inline-block;padding:4px 8px;border-radius:12px;font-size:12px;font-weight:600}.badge-success{background-color:var(--success-color);color:#fff}.badge-secondary{background-color:var(--text-secondary);color:#fff}.text-primary{color:var(--primary-color)}@media (max-width: 768px){.container{padding:0 12px}.header .container{flex-direction:column;gap:16px}.nav{flex-wrap:wrap;justify-content:center}.btn{padding:10px 20px;font-size:14px}.stamp-grid{grid-template-columns:repeat(auto-fill,minmax(100px,1fr));gap:12px}.stamp-image{width:50px;height:50px}.stamp-image img{max-width:30px;max-height:30px}}