:root{--text:#4a4458;--text-h:#1a1523;--bg:#faf9fc;--bg-card:#fff;--border:#e8e5ee;--code-bg:#f4f3ec;--accent:#7c3aed;--accent-bg:#7c3aed0f;--accent-border:#7c3aed40;--accent-hover:#6d28d9;--social-bg:#f4f3ec80;--shadow:0 1px 3px #0000000f, 0 1px 2px #0000000a;--shadow-md:0 4px 6px -1px #00000012, 0 2px 4px -2px #0000000d;--radius:12px;--sans:system-ui, "Segoe UI", Roboto, sans-serif;--heading:system-ui, "Segoe UI", Roboto, sans-serif;--mono:ui-monospace, Consolas, monospace;font:18px/145% var(--sans);letter-spacing:.18px;--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light dark;color:var(--text);background:var(--bg);font-synthesis:none;text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}@media (prefers-color-scheme:dark){:root{--lightningcss-light: ;--lightningcss-dark:initial}}@media (width<=1024px){:root{font-size:16px}}@media (prefers-color-scheme:dark){:root{--text:#a1a1aa;--text-h:#f4f4f5;--bg:#0f0f14;--bg-card:#1a1a24;--border:#2a2a3a;--code-bg:#1f2028;--accent:#a78bfa;--accent-bg:#a78bfa1a;--accent-border:#a78bfa4d;--accent-hover:#8b5cf6;--social-bg:#2f303a80;--shadow:0 1px 3px #0000004d, 0 1px 2px #0003;--shadow-md:0 4px 6px -1px #0006, 0 2px 4px -2px #0000004d}#social .button-icon{filter:invert()brightness(2)}}#root{text-align:center;border-inline:1px solid var(--border);box-sizing:border-box;flex-direction:column;width:1126px;max-width:100%;min-height:100svh;margin:0 auto;display:flex}body{margin:0}h1,h2{font-family:var(--heading);color:var(--text-h);font-weight:500}h1{letter-spacing:-1.68px;margin:32px 0;font-size:56px}@media (width<=1024px){h1{margin:20px 0;font-size:36px}}h2{letter-spacing:-.24px;margin:0 0 8px;font-size:24px;line-height:118%}@media (width<=1024px){h2{font-size:20px}}p{margin:0}code,.counter{font-family:var(--mono);color:var(--text-h);border-radius:4px;display:inline-flex}code{background:var(--code-bg);padding:4px 8px;font-size:15px;line-height:135%}.app{max-width:1200px;margin:0 auto;padding:24px 16px 64px}.app-grid-row{grid-template-columns:1fr 1fr;align-items:start;gap:24px;display:grid}.app-grid-cell{width:100%;min-width:0}.app h1{color:var(--text-h);text-align:center;letter-spacing:-.5px;margin:0;font-size:26px;font-weight:800}.app-header{text-align:center;background:linear-gradient(135deg, var(--accent-bg) 0%, transparent 60%);border:1px solid var(--accent-border);border-radius:16px;margin-bottom:32px;padding:32px 24px 24px;position:relative;overflow:hidden}.app-header:before{content:"";background:var(--accent);opacity:.06;border-radius:50%;width:120px;height:120px;position:absolute;top:-40px;right:-40px}.app-description{color:var(--text);letter-spacing:.3px;margin:12px 0 0;font-size:14px;line-height:1.6}.card{background:var(--bg-card,var(--bg));border:1px solid var(--border);border-radius:var(--radius,12px);box-shadow:var(--shadow);margin-bottom:20px;padding:24px;transition:box-shadow .2s,border-color .2s}.card:hover{box-shadow:var(--shadow-md)}.card h2{color:var(--text-h);border-bottom:2px solid var(--accent-bg);margin-bottom:16px;padding-bottom:10px;font-size:17px;font-weight:700}.form-grid{grid-template-columns:repeat(3,1fr);gap:10px;margin-bottom:16px;display:grid}.input-section{flex-direction:column;gap:12px;margin-bottom:16px;display:flex}.input-row-2col{grid-template-columns:1fr 1fr;gap:12px;display:grid}.floating-field{position:relative}.floating-field input{border:1px solid var(--border);background:var(--bg-card,var(--bg));width:100%;color:var(--text-h);box-sizing:border-box;border-radius:10px;padding:18px 12px 6px;font-size:15px;transition:border-color .2s,box-shadow .2s}.floating-field input:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-bg);outline:none}.floating-field label{color:var(--text);pointer-events:none;background:0 0;font-size:14px;transition:all .2s;position:absolute;top:50%;left:12px;transform:translateY(-50%)}.floating-field input:focus+label,.floating-field input:not(:placeholder-shown)+label{color:var(--accent);font-size:10px;top:6px;transform:translateY(0)}.floating-field.filled label{display:none}.floating-field.filled input{padding:12px}.time-wl-group{flex-direction:column;gap:8px;display:flex}.time-select-field{flex-direction:column;gap:4px;display:flex}.time-select-label{color:var(--text);font-size:12px}.time-select-row{align-items:center;gap:4px;display:flex}.time-select-row select{border:1px solid var(--border);background:var(--bg);color:var(--text-h);border-radius:8px;flex:1;padding:10px 8px;font-size:15px}.time-select-row select:focus{border-color:var(--accent);outline:none}.time-select-colon{color:var(--text);font-size:18px;font-weight:700}.water-fetch-row{flex-wrap:wrap;align-items:center;gap:16px;display:flex}.water-avg-badge{color:var(--text);background:var(--bg);border:1px solid var(--accent);border-radius:8px;padding:6px 14px;font-size:14px}.water-avg-badge strong{color:var(--accent);font-size:18px}.btn-fetch{color:#fff;cursor:pointer;white-space:nowrap;background:linear-gradient(135deg,#3b82f6,#2563eb);border:none;border-radius:8px;align-items:center;gap:6px;padding:10px 20px;font-size:14px;font-weight:600;transition:transform .15s,box-shadow .2s;display:inline-flex;box-shadow:0 2px 8px #2563eb40}.btn-fetch:hover:not(:disabled){transform:translateY(-1px);box-shadow:0 4px 14px #2563eb59}.btn-fetch:active:not(:disabled){transform:translateY(0)}.btn-fetch:disabled{opacity:.6;cursor:not-allowed}.fetch-icon{font-size:16px}.spinner{border:2px solid #ffffff4d;border-top-color:#fff;border-radius:50%;width:14px;height:14px;animation:.6s linear infinite spin;display:inline-block}@keyframes spin{to{transform:rotate(360deg)}}input,select,textarea{border:1px solid var(--border);background:var(--bg);width:100%;color:var(--text-h);box-sizing:border-box;border-radius:6px;padding:8px 12px;font-size:14px;transition:border-color .2s}input:focus,textarea:focus{border-color:var(--accent);outline:none}.date-label{color:var(--text);flex-direction:column;gap:4px;font-size:13px;display:flex}.date-field{flex-direction:column;gap:6px;display:flex}.date-field-label{color:var(--text);font-size:13px}.date-selects{grid-template-columns:1.4fr 1fr 1fr;gap:8px;display:grid}.date-preview{color:var(--text);font-size:12px}.helper-text{color:var(--text);margin:6px 0 0;font-size:13px;line-height:1.5}.calculator-panel{border:1px solid var(--border);background:var(--accent-bg);border-radius:10px;margin:8px 0 18px;padding:16px}.calculator-panel h3{color:var(--text-h);margin:0;font-size:16px}.calculator-settings{grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:10px;margin:14px 0;display:grid}.calculator-settings label{color:var(--text);flex-direction:column;gap:6px;font-size:13px;display:flex}.formula-note{background:var(--bg);border:1px solid var(--border);color:var(--text);border-radius:8px;flex-direction:column;gap:4px;margin:0 0 14px;padding:10px 12px;font-size:13px;display:flex}.formula-note strong{color:var(--text-h)}.result-panel{border:1px solid var(--border);background:var(--bg);border-radius:10px;margin:0 0 16px;padding:16px}.result-panel h3{color:var(--text-h);margin:0 0 12px;font-size:16px}.result-grid{grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:10px;display:grid}.result-grid label{color:var(--text);flex-direction:column;gap:6px;font-size:13px;display:flex}.result-grid .floating-field{min-width:0}.result-card{background:var(--accent-bg);border-radius:8px;flex-direction:column;justify-content:center;gap:6px;padding:12px 14px;display:flex}.result-card span{color:var(--text);font-size:12px}.result-card strong{color:var(--text-h);font-size:20px}.observation-grid{grid-template-columns:repeat(6,minmax(0,1fr)) 80px;align-items:center;gap:8px;margin-bottom:8px;display:grid}.observation-grid-header{color:var(--text);margin-bottom:6px;font-size:12px}.observation-row-remove{white-space:nowrap}.instrument-depth-cell{color:var(--text-h);white-space:pre-line;padding:4px;font-size:13px;line-height:1.4}.calculator-actions{flex-wrap:wrap;gap:8px;margin:12px 0 14px;display:flex}.calculator-summary{margin-top:0}.table-scroll{margin-top:12px;overflow-x:auto}.calc-table{min-width:560px}button{cursor:pointer;letter-spacing:.2px;border:none;border-radius:8px;padding:9px 20px;font-size:14px;font-weight:600;transition:all .2s}button:hover{box-shadow:var(--shadow-md);transform:translateY(-1px)}button:active{transform:translateY(0)}.form-actions{justify-content:center;gap:12px;margin-top:8px;display:flex}.btn-primary{background:linear-gradient(135deg, var(--accent), var(--accent-hover,var(--accent)));color:#fff;margin-right:8px;box-shadow:0 2px 8px #7c3aed40}.btn-primary:hover{box-shadow:0 4px 14px #7c3aed59}.btn-secondary{background:var(--accent-bg);color:var(--accent);border:1px solid var(--accent-border)}.btn-danger{color:#dc2626;background:#fef2f2;border:1px solid #fecaca}.stats-grid{grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:12px;margin-bottom:16px;display:grid}.stat-item{background:var(--bg-card,var(--bg));border:1px solid var(--border);border-radius:10px;flex-direction:column;gap:6px;padding:14px 16px;transition:border-color .2s;display:flex}.stat-item:hover{border-color:var(--accent-border)}.stat-item span{text-transform:uppercase;letter-spacing:.5px;color:var(--text);font-size:11px;font-weight:600}.stat-item strong{color:var(--accent);font-size:20px;font-weight:700}.site-filter-row{margin-bottom:.5rem}.site-filter-row select{border:1px solid var(--border);background:var(--bg);color:var(--text);border-radius:6px;padding:.4rem .6rem;font-size:.85rem}.csv-export-row{align-items:center;gap:10px;display:flex}.csv-export-row select{border:1px solid var(--border);background:var(--bg-card,var(--bg));color:var(--text);border-radius:8px;padding:8px 12px;font-size:13px}.sync-panel{margin-top:16px}.sync-description{color:var(--text-sub,#666);margin:0 0 12px;font-size:.85rem}.sync-key-row{align-items:center;gap:10px;margin-bottom:12px;display:flex}.sync-key-row label{white-space:nowrap;font-size:.9rem;font-weight:600}.sync-key-row input{border:1px solid var(--border);background:var(--bg);color:var(--text);border-radius:8px;flex:1;padding:8px 12px;font-size:14px}.sync-actions{gap:10px;margin-bottom:8px;display:flex}.sync-status{border-radius:6px;margin:8px 0 0;padding:6px 10px;font-size:.85rem}.sync-status-success{color:#166534;background:#dcfce7}.sync-status-error{color:#991b1b;background:#fee2e2}.sync-status-info{color:#1e40af;background:#dbeafe}.sync-last{color:var(--text-sub,#999);margin:4px 0 0;font-size:.8rem}.data-list-header{justify-content:space-between;align-items:center;margin-bottom:8px;display:flex}.data-list-header h2{margin:0}.bulk-actions{flex-wrap:wrap;align-items:center;gap:8px;display:flex}.bulk-confirm-text{color:#dc2626;font-size:.85rem;font-weight:600}.btn-sm{padding:4px 10px;font-size:.8rem}.bulk-checkbox{cursor:pointer;align-items:center;padding:8px 12px;display:flex}.bulk-checkbox input[type=checkbox]{width:18px;height:18px;accent-color:var(--accent);cursor:pointer}.data-list{flex-direction:column;gap:12px;margin:0;padding:0;list-style:none;display:flex}.data-list li{border:1px solid var(--border);background:var(--bg-card,var(--bg));border-radius:10px;flex-direction:column;padding:0;transition:border-color .2s,box-shadow .2s;display:flex;overflow:hidden}.data-list li:hover{border-color:var(--accent-border);box-shadow:var(--shadow)}.data-list li.selected{border-color:var(--accent);background:var(--accent-bg)}.item-content{flex-direction:column;flex:1;gap:0;display:flex}.item-header-row{border-bottom:1px solid var(--border);flex-wrap:wrap;align-items:center;gap:12px;padding:12px 16px;display:flex}.item-name{color:var(--text-h);font-size:15px;font-weight:700}.item-date{color:var(--text);font-size:13px}.item-time{color:var(--text);background:var(--accent-bg);border-radius:4px;padding:2px 8px;font-size:12px}.item-metrics{border-bottom:1px solid var(--border);grid-template-columns:repeat(4,1fr);gap:0;display:grid}.item-metric{flex-direction:column;align-items:center;gap:2px;padding:10px 8px;display:flex}.item-metric:not(:last-child){border-right:1px solid var(--border)}.item-metric span{text-transform:uppercase;letter-spacing:.5px;color:var(--text);font-size:10px;font-weight:600}.item-metric strong{color:var(--accent);font-size:15px;font-weight:700}.item-notes{color:var(--text);border-bottom:1px solid var(--border);flex-wrap:wrap;gap:8px;padding:8px 16px;font-size:12px;display:flex}.item-label{color:var(--text-h);font-weight:600}.item-buttons{flex-direction:row;gap:0;display:flex}.item-buttons button{color:var(--text);background:0 0;border:none;border-radius:0;flex:1;padding:8px 12px;font-size:13px;transition:background .15s,color .15s}.item-buttons button:hover{background:var(--accent-bg);color:var(--accent);box-shadow:none;transform:none}.item-buttons button:not(:last-child){border-right:1px solid var(--border)}.item-buttons .btn-danger{color:var(--text);background:0 0;border:none}.item-buttons .btn-danger:hover{color:#dc2626;background:#fef2f2}.empty-message{text-align:center;color:var(--text);padding:24px 0}.chart-wrapper{height:300px;position:relative}.modal-overlay{z-index:100;background:#00000080;justify-content:center;align-items:center;display:flex;position:fixed;inset:0}.modal{background:var(--bg);width:90%;max-width:560px;max-height:90vh;box-shadow:var(--shadow);border-radius:12px;padding:28px;overflow-y:auto}.modal h2{color:var(--text-h);margin-bottom:20px;font-size:18px;font-weight:600}.modal textarea{resize:vertical;margin-top:16px;margin-bottom:8px}.modal-buttons{gap:8px;margin-top:16px;display:flex}.compare-table{border-collapse:collapse;width:100%;margin-bottom:8px;font-size:14px}.compare-table th,.compare-table td{border:1px solid var(--border);text-align:center;padding:10px 14px}.compare-table thead th{background:var(--accent-bg);color:var(--accent);text-transform:uppercase;letter-spacing:.5px;font-size:12px;font-weight:700}.compare-table tbody tr:hover{background:var(--accent-bg)}.toast-container{z-index:200;flex-direction:column;gap:8px;display:flex;position:fixed;bottom:24px;right:24px}.toast{box-shadow:var(--shadow);border-radius:8px;max-width:320px;padding:12px 20px;font-size:14px;font-weight:500;animation:.25s toast-in}@keyframes toast-in{0%{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}.toast-success{color:#166534;background:#dcfce7}.toast-error{color:#991b1b;background:#fee2e2}.toast-info{background:var(--accent-bg);color:var(--accent);border:1px solid var(--accent-border)}.delete-confirm{color:#991b1b;border-bottom:1px solid var(--border);background:#fee2e2;flex-wrap:wrap;align-items:center;gap:8px;margin:0;padding:10px 16px;font-size:13px;display:flex}.delete-confirm button{padding:4px 10px;font-size:12px}@media (width<=960px){.app-grid-row{grid-template-columns:1fr}}@media (width<=640px){.app{padding:16px 12px 48px}.card{padding:18px}.form-grid,.input-row-2col{grid-template-columns:1fr}.water-fetch-row{flex-direction:column;align-items:stretch}.btn-fetch{justify-content:center;width:100%;padding:12px 16px}.result-grid{grid-template-columns:1fr}.item-metrics{grid-template-columns:repeat(2,1fr)}.item-metric:nth-child(2){border-right:none}.item-metric:first-child,.item-metric:nth-child(2){border-bottom:1px solid var(--border)}.chart-wrapper{height:240px}.observation-grid{grid-template-columns:1fr 1fr 1fr;gap:6px}.observation-row-remove{grid-column:1/-1;width:100%}.observation-grid-header{display:none}.instrument-depth-cell{font-size:11px}.calculator-settings{grid-template-columns:1fr 1fr}.calculator-panel{padding:14px}}