.seismic-tool{
      --navy:#0b1f3a;--navy2:#15375f;--blue:#1677ff;--bg:#f4f7fb;--card:#fff;
      --text:#152033;--muted:#68758a;--line:#dfe6ef;--ok:#16845b;--warn:#b7791f;--bad:#c43d3d;
      --shadow:0 10px 30px rgba(11,31,58,.08);--radius:18px;
    }
    .seismic-tool, .seismic-tool *{box-sizing:border-box} .seismic-tool{scroll-behavior:smooth}
    .seismic-tool{margin:0;background:var(--bg);color:var(--text);font-family:Vazirmatn,IRANSansX,Tahoma,Arial,sans-serif;line-height:1.85}
    .seismic-tool button, .seismic-tool input, .seismic-tool select{font:inherit}
    .seismic-tool .app{max-width:1500px;margin:auto;padding:24px}
    .seismic-tool .hero{background:linear-gradient(135deg,var(--navy),var(--navy2));color:#fff;border-radius:24px;padding:28px 30px;box-shadow:var(--shadow);margin-bottom:20px}
    .seismic-tool .hero h1{margin:0 0 8px;font-size:clamp(24px,3vw,38px)}
    .seismic-tool .hero p{margin:0;color:#dbe8f8;max-width:1000px}
    .seismic-tool .top-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:18px}
    .seismic-tool .btn{border:0;border-radius:12px;padding:11px 16px;cursor:pointer;transition:.18s;display:inline-flex;align-items:center;gap:8px}
    .seismic-tool .btn:hover{transform:translateY(-1px)}
    .seismic-tool .btn-primary{background:var(--blue);color:#fff}.seismic-tool .btn-light{background:#fff;color:var(--navy)}.seismic-tool .btn-soft{background:#eaf2ff;color:#1459b8}.seismic-tool .btn-danger{background:#fff1f1;color:#b83232}
    .seismic-tool .grid{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(360px,.75fr);gap:20px;align-items:start}
    .seismic-tool .card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:20px;margin-bottom:18px}
    .seismic-tool .card h2, .seismic-tool .card h3{margin:0 0 14px;color:var(--navy)}
    .seismic-tool .section-title{display:flex;align-items:center;justify-content:space-between;gap:12px;border-bottom:1px solid var(--line);padding-bottom:12px;margin-bottom:16px}
    .seismic-tool .step{display:inline-grid;place-items:center;width:34px;height:34px;border-radius:50%;background:#eaf2ff;color:#1459b8;font-weight:800;margin-left:10px}
    .seismic-tool .fields{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
    .seismic-tool .field{display:flex;flex-direction:column;gap:6px}.seismic-tool .field.full{grid-column:1/-1}
    .seismic-tool label{font-weight:700;font-size:14px;color:#334155}
    .seismic-tool input, .seismic-tool select{width:100%;border:1px solid #cfd8e5;background:#fff;border-radius:11px;padding:11px 12px;color:#152033;outline:none}
    .seismic-tool input:focus, .seismic-tool select:focus{border-color:#68a4ff;box-shadow:0 0 0 3px rgba(22,119,255,.12)}
    .seismic-tool small, .seismic-tool .hint{color:var(--muted);font-size:12px}
    .seismic-tool .toggle-row{display:flex;gap:10px;flex-wrap:wrap;align-items:center}.seismic-tool .toggle-row label{font-weight:500}
    .seismic-tool .tabs{display:flex;gap:8px;margin-bottom:12px}.seismic-tool .tab{border:1px solid var(--line);background:#fff;padding:9px 14px;border-radius:10px;cursor:pointer}.seismic-tool .tab.active{background:var(--navy);color:#fff;border-color:var(--navy)}
    .seismic-tool .map-wrap{position:relative;border:1px solid var(--line);border-radius:14px;overflow:hidden;background:#d8e1eb}
    .seismic-tool #mapCanvas{display:block;width:100%;height:auto;cursor:crosshair}
    .seismic-tool .map-badge{position:absolute;right:12px;top:12px;background:rgba(11,31,58,.88);color:#fff;padding:7px 10px;border-radius:10px;font-size:12px;backdrop-filter:blur(4px)}
    .seismic-tool .map-help{margin-top:10px;color:var(--muted);font-size:13px}
    .seismic-tool .reading{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:12px}
    .seismic-tool .reading-box{background:#f7f9fc;border:1px solid var(--line);border-radius:12px;padding:12px}.seismic-tool .reading-box b{font-size:18px;color:var(--navy)}
    .seismic-tool .notice{border-radius:12px;padding:12px 14px;margin:12px 0;font-size:13px}.seismic-tool .notice.warn{background:#fff7e7;color:#805719;border:1px solid #f1d79a}.seismic-tool .notice.info{background:#edf5ff;color:#245b99;border:1px solid #cfe2ff}.seismic-tool .notice.bad{background:#fff1f1;color:#9e2f2f;border:1px solid #f1c7c7}.seismic-tool .notice.ok{background:#ecfbf4;color:#176b4d;border:1px solid #bde8d5}
    .seismic-tool .result-head{display:flex;justify-content:space-between;gap:12px;align-items:center;flex-wrap:wrap}
    .seismic-tool .status{border-radius:999px;padding:5px 10px;font-size:12px;font-weight:800}.seismic-tool .status.ok{background:#e5f8ef;color:var(--ok)}.seismic-tool .status.warn{background:#fff4dd;color:var(--warn)}.seismic-tool .status.bad{background:#ffeaea;color:var(--bad)}
    .seismic-tool .metric-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px;margin-top:14px}.seismic-tool .metric{background:#f7f9fc;border:1px solid var(--line);border-radius:13px;padding:12px}.seismic-tool .metric span{display:block;color:var(--muted);font-size:12px}.seismic-tool .metric strong{display:block;color:var(--navy);font-size:19px;direction:ltr;text-align:right;margin-top:3px}
    .seismic-tool table{width:100%;border-collapse:collapse;font-size:14px}.seismic-tool th, .seismic-tool td{padding:10px;border-bottom:1px solid var(--line);text-align:right}.seismic-tool th{background:#f7f9fc;color:#42526a}.seismic-tool .ltr{direction:ltr;unicode-bidi:isolate}
    .seismic-tool .system-card{border:1px solid var(--line);border-radius:14px;padding:14px;margin-top:12px}.seismic-tool .system-card h4{margin:0 0 10px}.seismic-tool .system-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:8px}.seismic-tool .system-grid div{background:#f7f9fc;border-radius:10px;padding:10px}.seismic-tool .system-grid span{font-size:12px;color:var(--muted);display:block}.seismic-tool .system-grid b{direction:ltr;display:block}
    .seismic-tool .chart{width:100%;height:310px;border:1px solid var(--line);border-radius:14px;background:#fff;margin-top:12px}
    .seismic-tool .sticky{position:sticky;top:16px}
    .seismic-tool .summary-list{display:grid;gap:8px}.seismic-tool .summary-row{display:flex;justify-content:space-between;gap:14px;padding:9px 0;border-bottom:1px dashed var(--line)}.seismic-tool .summary-row:last-child{border-bottom:0}.seismic-tool .summary-row b{direction:ltr;unicode-bidi:isolate}
    .seismic-tool .progress{height:8px;background:#e6edf5;border-radius:999px;overflow:hidden;margin-bottom:16px}.seismic-tool .progress>div{height:100%;width:25%;background:var(--blue);transition:.25s}
    .seismic-tool .footer{color:var(--muted);font-size:12px;text-align:center;padding:18px}
    .seismic-tool .print-only{display:none}
    @media (max-width:1050px){.seismic-tool .grid{grid-template-columns:1fr}.seismic-tool .sticky{position:static}.seismic-tool .metric-grid{grid-template-columns:repeat(2,1fr)}}
    @media (max-width:650px){.seismic-tool .app{padding:12px}.seismic-tool .hero{padding:22px 18px}.seismic-tool .fields{grid-template-columns:1fr}.seismic-tool .metric-grid, .seismic-tool .system-grid, .seismic-tool .reading{grid-template-columns:1fr}.seismic-tool .card{padding:15px}.seismic-tool .top-actions .btn{flex:1;justify-content:center}}
    @media  print{
      .seismic-tool{background:#fff}.seismic-tool .app{max-width:none;padding:0}.seismic-tool .hero, .seismic-tool .no-print, .seismic-tool .top-actions, .seismic-tool .map-wrap, .seismic-tool .tabs, .seismic-tool .map-help, .seismic-tool .progress{display:none!important}.seismic-tool .grid{display:block}.seismic-tool .card{box-shadow:none;break-inside:avoid;border-color:#bbb}.seismic-tool .sticky{position:static}.seismic-tool .print-only{display:block}.seismic-tool .result-card{display:block!important}
    }
  
.seismic-tool{background:#f4f7fb;color:#152033;padding:22px 0 34px;min-height:70vh;font-family:"Vazirmatn","Vazir",Tahoma,Arial,sans-serif;line-height:1.85}
.seismic-tool .tool-intro-strip{max-width:1500px;margin:0 auto 16px;padding:0 24px}
.seismic-tool .warning-panel{background:#fff8e8;border:1px solid #ecd59d;color:#725319;border-radius:16px;padding:14px 16px;line-height:1.9}
.seismic-tool .app{padding-top:0}
@media(max-width:650px){.seismic-tool .tool-intro-strip{padding:0 12px}}

/* SAZEHLOGY SEISMIC ENGINE V3 UI */
.seismic-tool .btn{text-decoration:none}
.seismic-tool .location-mode{display:flex;gap:16px;flex-wrap:wrap;margin-bottom:14px;padding:12px;background:#f7f9fc;border:1px solid var(--line);border-radius:12px}
.seismic-tool .location-mode label{display:flex;align-items:center;gap:7px;font-weight:600}
.seismic-tool .location-mode input{width:auto}
.seismic-tool .direction-panels{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:14px}
.seismic-tool .direction-panel{border:1px solid var(--line);border-radius:14px;padding:14px;background:#fbfcfe}
.seismic-tool .direction-panel h3{margin:0 0 12px}
.seismic-tool .table-scroll{overflow:auto;border:1px solid var(--line);border-radius:13px}
.seismic-tool .table-scroll table{min-width:760px}
.seismic-tool .table-scroll th{position:sticky;top:0;z-index:1}
.seismic-tool .param-name{font-weight:700;color:#24364f}
.seismic-tool .param-symbol{direction:ltr;unicode-bidi:isolate;font-family:Georgia,'Times New Roman',serif;font-weight:700}
.seismic-tool .unit{color:var(--muted);font-size:12px}
.seismic-tool .calc-details{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin-top:14px}
.seismic-tool .calc-box{border:1px solid var(--line);border-radius:13px;padding:14px;background:#f9fbfe}
.seismic-tool .calc-box h4{margin:0 0 8px;color:var(--navy)}
.seismic-tool .formula{direction:ltr;unicode-bidi:isolate;text-align:center;background:#fff;border:1px dashed #bdd1ea;border-radius:10px;padding:9px;margin:8px 0;font-family:Georgia,'Times New Roman',serif}
.seismic-tool .trace{font-size:12px;color:#5f6f84}
.seismic-tool .chart-legend{display:flex;gap:14px;flex-wrap:wrap;margin-top:8px;font-size:12px;color:var(--muted)}
.seismic-tool .legend-line{display:inline-block;width:22px;height:0;border-top:3px solid;margin-left:5px;vertical-align:middle}
.seismic-tool .legend-line.x{border-color:#ef4444}.seismic-tool .legend-line.y{border-color:#16a34a}.seismic-tool .legend-line.s{border-color:#1677ff}
.seismic-tool .badge-source{display:inline-flex;align-items:center;border-radius:999px;padding:4px 9px;background:#eef4ff;color:#245b99;font-size:11px;font-weight:800}
@media(max-width:800px){.seismic-tool .direction-panels,.seismic-tool .calc-details{grid-template-columns:1fr}}