*{box-sizing:border-box}:root{--blue:#2563eb;--dark:#111827;--muted:#64748b;--line:#e2e8f0;--bg:#f8fafc;--red:#dc2626;--green:#15803d}
body{margin:0;background:var(--bg);color:var(--dark);font-family:Inter,system-ui,-apple-system,"Segoe UI",sans-serif;line-height:1.5}button,input,select{font:inherit}button{cursor:pointer}a{text-decoration:none;color:inherit}
.tool-header{height:72px;background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20}.header-container{max-width:1200px;height:100%;margin:auto;padding:0 24px;display:flex;align-items:center;justify-content:space-between}.brand{font-size:25px;font-weight:900}.header-nav{display:flex;gap:30px;color:var(--muted);font-weight:650}
.main-container{max-width:1200px;margin:auto;padding:60px 24px 80px}.tool-intro{text-align:center;max-width:850px;margin:0 auto 42px}.tool-badge{display:inline-block;padding:8px 16px;border-radius:999px;background:#eff6ff;color:var(--blue);font-weight:800;font-size:13px}.tool-intro h1{font-size:clamp(42px,6vw,68px);line-height:.98;letter-spacing:-3px;margin:22px 0 20px}.tool-intro h1 span{display:block;color:var(--blue)}.tool-intro p{font-size:20px;color:var(--muted)}
.panel,.summary-section,.action-panel,.info-section,.faq-section{background:#fff;border:1px solid var(--line);border-radius:20px;box-shadow:0 12px 35px rgba(15,23,42,.06);margin-bottom:24px;padding:28px}.panel-header,.summary-heading,.action-panel{display:flex;align-items:center;justify-content:space-between;gap:20px}.panel h2,.summary-section h2,.action-panel h2,.info-section h2,.faq-section h2{margin:0;font-size:22px}.panel-header p,.summary-heading p,.action-panel p{margin:5px 0;color:var(--muted)}
.form-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:25px}.form-group label{display:block;font-size:13px;font-weight:750;margin-bottom:7px}input,select{width:100%;border:1px solid #cbd5e1;border-radius:11px;background:#fff;padding:12px;outline:0}input:focus,select:focus{border-color:var(--blue);box-shadow:0 0 0 3px #2563eb1a}
.header-actions,.action-buttons{display:flex;gap:10px;flex-wrap:wrap}.primary-button,.secondary-button,.danger-button,.calculate-button{border-radius:11px;padding:11px 16px;font-weight:750}.primary-button,.calculate-button{border:0;background:var(--blue);color:#fff}.secondary-button{background:#fff;color:#334155;border:1px solid #cbd5e1}.danger-button{background:#fff1f2;color:#be123c;border:1px solid #fecdd3}
.import-area{margin:25px 0 18px;padding:16px 18px;border:1px dashed #bfdbfe;background:#f8fbff;border-radius:14px;display:flex;align-items:center;justify-content:space-between;gap:15px}.import-area strong{display:block}.import-area span{display:block;color:var(--muted);font-size:13px}.file-button{display:inline-flex;background:#e0edff;color:#1d4ed8;border-radius:10px;padding:10px 14px;font-weight:750;cursor:pointer}
.table-controls{display:flex;gap:12px;margin-bottom:14px}.search-control{position:relative;flex:1}.search-control span{position:absolute;left:12px;top:10px}.search-control input{padding-left:38px}.table-controls select{max-width:180px}.table-wrapper{overflow:auto;border:1px solid var(--line);border-radius:14px}
.inventory-table{width:100%;min-width:1100px;border-collapse:collapse}.inventory-table th{background:#f8fafc;color:#475569;font-size:12px;text-transform:uppercase;white-space:nowrap}.inventory-table th,.inventory-table td{padding:10px 9px;border-bottom:1px solid var(--line);text-align:left}.inventory-table th:nth-child(n+4),.inventory-table td:nth-child(n+4){text-align:right}.inventory-table th:nth-child(10),.inventory-table td:nth-child(10),.inventory-table th:last-child,.inventory-table td:last-child{text-align:left}.inventory-table td input{padding:8px 9px;border-radius:8px}.row-number{text-align:center!important;color:#64748b;font-weight:700}.readonly-cell{font-weight:750;white-space:nowrap}.variance-positive{color:var(--green)}.variance-negative{color:var(--red)}
.status-badge{display:inline-block;padding:5px 9px;border-radius:999px;font-size:11px;font-weight:850}.status-matched{background:#f1f5f9;color:#475569}.status-shortage{background:#fef2f2;color:var(--red)}.status-excess{background:#f0fdf4;color:var(--green)}.delete-button{border:0;background:#f8fafc;color:#64748b;border-radius:8px;padding:7px 9px}.table-empty{text-align:center;padding:25px;color:#94a3b8;display:none}.table-footer-note{display:flex;justify-content:space-between;color:#94a3b8;font-size:12px;margin-top:10px}
.summary-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.summary-card,.financial-card{border:1px solid var(--line);background:#fff;border-radius:15px;padding:18px}.summary-card span,.financial-card span{display:block;color:var(--muted);font-size:13px;font-weight:650}.summary-card strong{display:block;font-size:30px}.shortage-card strong{color:var(--red)}.excess-card strong{color:var(--green)}.financial-summary{display:grid;grid-template-columns:repeat(5,1fr);gap:14px;margin-top:14px}.financial-card strong{display:block;font-size:18px;margin-top:6px}.net-card{border-color:#bfdbfe;background:#f8fbff}.net-card strong{color:var(--blue)}
.info-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:22px}.info-grid>div{border-top:2px solid #dbeafe;padding-top:16px}.info-grid span{color:var(--blue);font-weight:900}.info-grid h3{font-size:16px;margin:7px 0}.info-grid p,.faq-section p{color:var(--muted)}.faq-section details{border-bottom:1px solid var(--line);padding:16px 0}.faq-section summary{font-weight:800;cursor:pointer}
.tool-footer{border-top:1px solid var(--line);background:#fff;padding:28px 24px;display:flex;justify-content:space-between;color:var(--muted)}.tool-footer div{display:flex;gap:12px;align-items:center}.tool-footer strong{color:var(--dark);font-size:20px}.tool-footer p{margin:0}
@media(max-width:900px){.form-grid,.info-grid{grid-template-columns:repeat(2,1fr)}.summary-grid{grid-template-columns:repeat(2,1fr)}.financial-summary{grid-template-columns:repeat(2,1fr)}}
@media(max-width:640px){.header-nav{gap:14px;font-size:13px}.main-container{padding:40px 14px 60px}.tool-intro h1{font-size:42px}.tool-intro p{font-size:17px}.panel,.summary-section,.info-section,.faq-section{padding:20px}.form-grid,.summary-grid,.financial-summary,.info-grid{grid-template-columns:1fr}.panel-header,.summary-heading,.action-panel,.import-area{align-items:flex-start;flex-direction:column}.table-controls{flex-direction:column}.table-controls select{max-width:none}.tool-footer{flex-direction:column;gap:12px}}
.inventory-table input{min-width:90px}.inventory-table td:nth-child(2) input{min-width:120px}.inventory-table td:nth-child(3) input{min-width:180px}
@media(max-width:640px){.inventory-table input{font-size:16px;min-height:42px}.inventory-table td:nth-child(2) input{min-width:130px}.inventory-table td:nth-child(3) input{min-width:190px}.inventory-table td:nth-child(4) input,.inventory-table td:nth-child(5) input,.inventory-table td:nth-child(8) input{min-width:100px}}
/* ===== INFORMATION CARD GRID ===== */

.info-section .info-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px;
    margin-top: 24px;
}

.info-section .info-grid > div {
    background: #ffffff;
    border: 1px solid #e5e7eb;
    border-radius: 20px;
    padding: 28px 26px;
}

.info-section .info-grid > div > span {
    display: inline-block;
    margin-bottom: 16px;
    font-size: 15px;
    font-weight: 700;
    color: #2563eb;
}

.info-section .info-grid > div h3 {
    margin: 0 0 14px;
    font-size: 20px;
    line-height: 1.35;
}

.info-section .info-grid > div p {
    margin: 0 0 14px;
    line-height: 1.7;
}

.info-section .info-grid > div p:last-child {
    margin-bottom: 0;
}


/* ===== MOBILE ===== */

@media (max-width: 700px) {

    .info-section .info-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .info-section .info-grid > div {
        padding: 22px 20px;
        border-radius: 18px;
    }

}