* { box-sizing: border-box; }
        body {
            font-family: 'Anuphan', sans-serif;
            background: radial-gradient(circle at center, #fdfbfa 0%, #f3ede6 100%);
            min-height: 100vh; margin: 0; padding: 20px;
            display: flex; justify-content: center; align-items: center;
            -webkit-font-smoothing: antialiased;
        }
        
        .auth-card {
            background: #ffffff; width: 100%; max-width: 450px; padding: 45px 35px;
            border-radius: 32px; box-shadow: 0 25px 60px rgba(74, 59, 50, 0.06);
            border: 1px solid rgba(235, 220, 208, 0.7); text-align: center;
            position: relative;
        }
        .auth-title { font-size: 28px; font-weight: 700; color: #4a3b32; margin: 0; letter-spacing: 0.12em; }
        .auth-subtitle { font-size: 12px; color: #a39284; margin: 0 0 25px 0; }
        
        .tab-menu { display: flex; border-bottom: 2px solid #f5ede6; margin-bottom: 25px; }
        .tab-btn { flex: 1; padding: 12px; font-weight: 600; font-size: 14px; color: #a39284; cursor: pointer; border: none; background: none; transition: all 0.2s; }
        .tab-btn.active { color: #b38e6d; border-bottom: 2px solid #b38e6d; margin-bottom: -2px; }

        .form-group { text-align: left; margin-bottom: 16px; }
        .form-group label { display: block; font-size: 12.5px; font-weight: 600; color: #4a3b32; margin-bottom: 6px; }
        .form-group input, .form-group select {
            width: 100%; padding: 12px 14px; border: 1px solid #ebdcd0; border-radius: 10px;
            font-size: 14px; font-family: 'Anuphan', sans-serif; outline: none; background: #faf8f5;
        }
        .form-group input:focus, .form-group select:focus { border-color: #b38e6d; background: #ffffff; }
        
        .btn-auth { width: 100%; background: #b38e6d; color:#fff; border:none; padding: 14px; border-radius: 10px; font-size: 15px; font-weight: 600; cursor: pointer; margin-top: 10px; }
        .btn-auth:hover { background: #9c7553; }
        
        .main-dashboard { display: none; width: 100%; max-width: 1400px; background: #ffffff; padding: 35px; border-radius: 24px; box-shadow: 0 12px 40px rgba(74, 59, 50, 0.04); position: relative; }
        .dash-header { display: flex; justify-content: space-between; align-items: center; border-bottom: 1px solid #f5ede6; padding-bottom: 15px; margin-bottom: 25px; }
        .dash-header h1 { color: #b38e6d; font-size: 26px; margin: 0; font-weight: 700; }
        .user-badge-zone { display: flex; align-items: center; gap: 12px; }
        .user-tag { background: #faf6f2; border: 1px solid #ebdcd0; padding: 6px 14px; border-radius: 8px; font-size: 13px; font-weight: 500; }
        .btn-logout { background: #c94c4c; color:#fff; border:none; padding:8px 16px; border-radius:8px; font-size:13px; cursor:pointer; font-weight:600; transition: background 0.2s; }
        .btn-logout:hover { background: #b03a3a; }
        
        .tabs-nav { display: flex; gap: 10px; margin-bottom: 25px; border-bottom: 2px solid #faf6f2; padding-bottom: 10px; }
        .tab-nav-btn { background: none; border: none; padding: 10px 20px; font-size: 15px; font-weight: 600; color: #a39284; cursor: pointer; border-radius: 8px; }
        .tab-nav-btn.active { background: #faf6f2; color: #b38e6d; }
        .tab-content { display: none; }
        .tab-content.active { display: block; }

        .workspace-grid { display: grid; grid-template-columns: 1fr 1.1fr; gap: 35px; align-items: start; }
        .right-panel { background-color: #faf8f5; padding: 25px; border-radius: 20px; border: 1px solid #ebdcd0; }
        .form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
        .full-width { grid-column: span 2; }
        .preset-container { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 8px; }
        .btn-preset { background-color: #faf6f2; border: 1px solid #ebdcd0; color: #615043; padding: 5px 12px; border-radius: 8px; font-size: 12px; cursor: pointer; }
        .btn-add-item { background-color: #b38e6d; color: #ffffff; border: none; padding: 14px; border-radius: 12px; font-size: 15px; font-weight: 600; cursor: pointer; width: 100%; display: flex; justify-content: center; gap: 8px; margin-top: 10px; }
        .btn-add-item:hover { background: #9c7553; }
        
        .table-container { border: 1px solid #ebdcd0; border-radius: 14px; overflow: hidden; background: #ffffff; max-height: 250px; overflow-y: auto; }
        .item-table { width: 100%; border-collapse: collapse; font-size: 13.5px; }
        .item-table th { background-color: #faf6f2; color: #615043; padding: 12px; font-weight: 600; position: sticky; top: 0; text-align: left; }
        .item-table td { padding: 12px; border-bottom: 1px solid #f5ede6; text-align: left; vertical-align: middle; }
        .btn-delete-row { background: #fbebebe8; color: #c94c4c; border: 1px solid #f5c2c2; padding: 4px 8px; border-radius: 6px; font-size: 11px; cursor: pointer; font-weight: 600; }
        .btn-delete-row:hover { background: #c94c4c; color: #fff; }
        
        .result-box { background-color: #4a3b32; color: #ffffff; padding: 20px; border-radius: 14px; text-align: center; margin-top: 15px; font-size: 14px; }
        .result-box span { font-size: 34px; font-weight: 700; display: block; margin-top: 5px; }
        
        .action-container { display: grid; grid-template-columns: 1fr 2fr; gap: 12px; margin-top: 15px; }
        .btn-action { padding: 14px; border-radius: 10px; font-size: 14px; font-weight: 600; cursor: pointer; border: none; text-align: center; }
        .btn-copy { background-color: #ebdcd0; color: #615043; }
        .btn-send-sheet { background-color: #3d6a45; color: #ffffff; }
        .btn-send-sheet:hover { background-color: #2f5235; }
        .cheat-sheet-box { background-color: #fdfcfb; border: 1px dashed #ebdcd0; border-radius: 12px; padding: 14px; margin-top: 15px; font-size: 12.5px; line-height: 1.5; }
        
        .report-section { background: #ffffff; border: 1px solid #ebdcd0; border-radius: 16px; padding: 25px; }
        .filter-row { display: flex; justify-content: space-between; align-items: center; gap: 15px; margin-bottom: 20px; flex-wrap: wrap; }
        .filter-group { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
        .filter-group label { font-size: 12.5px; font-weight: 600; color: #4a3b32; }
        .filter-group select, .filter-group input { padding: 8px 12px; border-radius: 8px; border: 1px solid #ebdcd0; font-family: 'Anuphan'; outline: none; }
        
        .dashboard-table-wrapper { border: 1px solid #ebdcd0; border-radius: 12px; overflow-x: auto; background: #fff; }
        .dash-large-table { width: 100%; border-collapse: collapse; font-size: 13px; min-width: 1150px; }
        .dash-large-table th { background: #faf8f5; color: #4a3b32; padding: 12px 10px; font-weight: 600; border-bottom: 2px solid #ebdcd0; text-align: center; }
        .dash-large-table td { padding: 12px 10px; border-bottom: 1px solid #f5ede6; text-align: center; }
        
        .status-badge { padding: 4px 10px; border-radius: 20px; font-size: 11.5px; font-weight: 600; display: inline-block; }
        .badge-lock { background: #e3f2fd; color: #0d47a1; }
        .badge-wait { background: #fff3e0; color: #e65100; }
        .profit-positive { color: #2e7d32; font-weight: 600; background: #e8f5e9; padding: 2px 6px; border-radius: 4px; }
        .profit-negative { color: #c62828; font-weight: 600; background: #ffebee; padding: 2px 6px; border-radius: 4px; }
        
        .loading-overlay { display: none; position: absolute; top:0; left:0; width:100%; height:100%; background:rgba(255,255,255,0.92); border-radius:32px; justify-content:center; align-items:center; font-weight:600; color:#b38e6d; z-index:100; flex-direction:column; }
        .hidden { display: none !important; }
        .success-view { display: none; }
.classic-scope { font-family: 'Helvetica Neue', Arial, sans-serif; }
  .classic-scope, .classic-scope *, .classic-scope *:before, .classic-scope *:after { box-sizing: border-box; }
  .classic-scope .main-wrapper { display: flex; flex-direction: row; flex-wrap: wrap; gap: 20px; width: 100%; max-width: 1550px; }
  .classic-scope .left-container { flex: 1; min-width: 320px; max-width: 450px; display: flex; flex-direction: column; gap: 20px; }
  .classic-scope .calculator-container { background-color: #ffffff; padding: 25px; border-radius: 16px; box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05); width: 100%; }
  .classic-scope .cc-table-container { background-color: #ffffff; flex: 2; min-width: 320px; padding: 25px; border-radius: 16px; box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05); display: flex; flex-direction: column; }
  .classic-scope .tab-control-bar { display: flex; gap: 10px; border-bottom: 2px solid #ebdcd0; padding-bottom: 10px; margin-bottom: 15px; }
  .classic-scope .cc-tab-btn { padding: 10px 20px; border: none; background-color: #f5f5f5; color: #666666; font-size: 14px; font-weight: bold; border-radius: 8px; cursor: pointer; transition: all 0.2s; }
  .classic-scope .cc-tab-btn.active-tab { background-color: #a88463; color: #ffffff; box-shadow: 0 2px 6px rgba(168, 132, 99, 0.2); }
  .classic-scope .table-scroll-wrapper { max-height: 520px; overflow-y: auto; overflow-x: auto; margin-top: 15px; border: 1px solid #ebdcd0; border-radius: 8px; -webkit-overflow-scrolling: touch; }
  .classic-scope .gold-table { width: 100%; min-width: 850px; border-collapse: separate; border-spacing: 0; font-size: 14px; }
  .classic-scope .gold-table th { background-color: #fbf6f0; color: #a88463; font-weight: bold; text-align: center; padding: 12px; border-bottom: 2px solid #ebdcd0; position: sticky; top: 0; z-index: 10; }
  .classic-scope .gold-table td { padding: 12px; border-bottom: 1px solid #f1f1f1; color: #444444; text-align: center; }
  .classic-scope .calc-mode-container { display: flex; gap: 8px; margin-bottom: 20px; background-color: #f5f5f5; padding: 6px; border-radius: 12px; }
  .classic-scope .mode-btn { flex: 1; padding: 12px 5px; border: none; border-radius: 8px; font-size: 14px; font-weight: bold; cursor: pointer; transition: all 0.2s; text-align: center; background-color: transparent; color: #666666; }
  .classic-scope .mode-btn.active-gold { background-color: #a88463; color: #fff; box-shadow: 0 2px 8px rgba(168, 132, 99, 0.3); }
  .classic-scope .mode-btn.active-silver { background-color: #718096; color: #fff; box-shadow: 0 2px 8px rgba(113, 128, 150, 0.3); }
  .classic-scope .cc-row { display: flex; gap: 12px; margin-bottom: 12px; width: 100%; }
  .classic-scope .cc-form-group { flex: 1; display: flex; flex-direction: column; min-width: 0; }
  .classic-scope label { color: #555555; font-size: 13px; margin-bottom: 6px; font-weight: 500; }
  .classic-scope input { padding: 12px; border: 1px solid #ebdcd0; border-radius: 10px; font-size: 16px; outline: none; width: 100%; }
  .classic-scope .delete-row-btn { background-color: #ffe6e6; color: #cc0000; border: 1px solid #ffa3a3; border-radius: 6px; padding: 4px 10px; font-size: 13px; font-weight: bold; cursor: pointer; margin-right: 10px; transition: all 0.2s; }
  .classic-scope .delete-row-btn:hover { background-color: #cc0000; color: #ffffff; }
  .classic-scope .item-name-cell { display: flex; align-items: center; justify-content: flex-start; padding-left: 15px !important; }
  .classic-scope .pay-column { font-weight: bold; color: #b59275 !important; }
  .classic-scope .summary-row td { position: sticky; bottom: 0; z-index: 9; background-color: #fbf6f0 !important; color: #a88463; font-weight: bold; border-top: 2px solid #ebdcd0; border-bottom: none; font-size: 15px; }
  .classic-scope .empty-row-text { color: #bbb; font-style: italic; }
  .classic-scope .silver-net-pay-container { margin-top: 20px; align-self: flex-end; background-color: #f0f4f8; border: 1px solid #cbd5e0; padding: 15px 25px; border-radius: 12px; text-align: right; width: 100%; max-width: 380px; box-shadow: 0 2px 10px rgba(0,0,0,0.03); }
  .classic-scope .silver-net-title { font-size: 13px; color: #4a5568; font-weight: bold; margin-bottom: 4px; }
  .classic-scope .silver-net-value { font-size: 26px; font-weight: bold; color: #2b6cb0; }
  .classic-scope .save-to-history-btn { background-color: #27ae60; color: #ffffff; border: none; padding: 10px 18px; font-size: 14px; font-weight: bold; border-radius: 8px; cursor: pointer; transition: all 0.2s; }
  .classic-scope .save-to-history-btn:hover { background-color: #219653; }
  .classic-scope .history-list { display: flex; flex-direction: column; gap: 12px; margin-top: 15px; }
  .classic-scope .history-item { background-color: #fdfdfd; border: 1px solid #ebdcd0; border-radius: 12px; padding: 15px; display: flex; flex-direction: column; gap: 8px; position: relative; }
  .classic-scope .history-item-header { display: flex; justify-content: space-between; font-size: 13px; color: #7f8c8d; border-bottom: 1px dashed #ebdcd0; padding-bottom: 6px; }
  .classic-scope .history-item-body { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 10px; }
  .classic-scope .history-summary-text { font-size: 14px; color: #444444; }
  .classic-scope .history-actions { display: flex; gap: 8px; }
  .classic-scope .hist-btn { padding: 6px 12px; font-size: 12px; font-weight: bold; border-radius: 6px; cursor: pointer; border: 1px solid #ddd; transition: all 0.1s; }
  .classic-scope .btn-view-detail { background-color: #f39c12; color: #fff; border-color: #e67e22; }
  .classic-scope .btn-recall { background-color: #3498db; color: #fff; border-color: #2980b9; }
  .classic-scope .btn-delete-hist { background-color: #fff; color: #c0392b; border-color: #e74c3c; }
  .classic-scope .btn-delete-hist:hover { background-color: #c0392b; color: #fff; }
  .classic-scope .history-grand-total { margin-top: 20px; background-color: #fbf6f0; border: 1px solid #ebdcd0; padding: 15px; border-radius: 10px; font-size: 14px; color: #a88463; font-weight: bold; display: flex; justify-content: space-between; }
  .classic-scope .modal-overlay { position: fixed; top: 0; left: 0; width: 100%; height: 100%; background-color: rgba(0, 0, 0, 0.4); display: flex; justify-content: center; align-items: center; z-index: 9999; }
  .classic-scope .modal-box { background-color: #ffffff; width: 90%; max-width: 700px; border-radius: 16px; padding: 25px; box-shadow: 0 10px 30px rgba(0,0,0,0.15); display: flex; flex-direction: column; max-height: 85vh; }
  .classic-scope .modal-header { display: flex; justify-content: space-between; align-items: center; border-bottom: 2px solid #ebdcd0; padding-bottom: 10px; margin-bottom: 15px; }
  .classic-scope .modal-title { font-size: 18px; font-weight: bold; color: #a88463; }
  .classic-scope .modal-close-x { background: none; border: none; font-size: 20px; color: #999; cursor: pointer; }
  .classic-scope .modal-body { overflow-y: auto; margin-bottom: 15px; }
  .classic-scope .modal-footer { display: flex; justify-content: flex-end; }
  .classic-scope .btn-close-modal { background-color: #95a5a6; color: #fff; border: none; padding: 10px 20px; border-radius: 8px; font-weight: bold; cursor: pointer; }
  @media (max-width: 1024px) { .classic-scope .main-wrapper { flex-direction: column; } .classic-scope .left-container { max-width: 100%; } .classic-scope .silver-net-pay-container { align-self: center; max-width: 100%; text-align: center; } }
  .classic-scope .pure-gold-container { background-color: #fbf6f0; border: 1px solid #ebdcd0; padding: 22px; border-radius: 16px; display: flex; flex-direction: column; gap: 15px; }
  .classic-scope .pure-box-section { text-align: center; }
  .classic-scope .pure-box-section:not(:last-child) { border-bottom: 1px dashed #ebdcd0; padding-bottom: 15px; }
  .classic-scope .pure-gold-title { font-size: 14px; color: #a88463; font-weight: bold; margin-bottom: 6px; }
  .classic-scope .pure-gold-value { font-size: 26px; font-weight: bold; color: #a88463; }
  .classic-scope .refine-title { color: #718096; }
  .classic-scope .refine-value { color: #4a5568; }
  .classic-scope .result-button { background-color: #b59275; color: #fff; text-align: center; padding: 18px; border-radius: 12px; margin-top: 20px; }
  .classic-scope .result-amount { font-size: 28px; font-weight: bold; }
  .classic-scope .add-btn { background-color: #a88463; color: white; border: none; padding: 14px; font-size: 16px; font-weight: bold; border-radius: 10px; width: 100%; margin-top: 15px; cursor: pointer; }
  .classic-scope .add-btn:hover { background-color: #8e6f50; }
  .classic-scope .clear-btn { background-color: #f5f5f5; color: #cc0000; border: 1px solid #ddd; padding: 10px 18px; font-size: 14px; font-weight: bold; border-radius: 8px; cursor: pointer; }
  .classic-scope .clear-btn:hover { background-color: #ffe6e6; }
  .classic-scope .hidden-element { display: none !important; }
  .classic-scope h2 { color: #a88463; text-align: center; margin: 0; font-size: 28px; }
  .classic-scope h3 { color: #a88463; margin: 0; font-size: 22px; }
  .classic-scope .subtitle { color: #a88463; text-align: center; font-size: 14px; margin-top: 0; margin-bottom: 20px; opacity: 0.8; }