#ihsc-app {
    --navy: #0f2439;
    --navy-2: #16324a;
    --teal: #0d9488;
    --teal-dark: #0b7a70;
    --teal-light: #ccfbf1;
    --bg: #f4f8f8;
    --card: #ffffff;
    --border: #d8e6e4;
    --text: #14262f;
    --text-muted: #4d6470;
    max-width: 1180px;
    margin: 0 auto;
    padding: 24px 16px 48px;
    color: var(--text);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background: var(--bg);
}

#ihsc-app * { box-sizing: border-box; }

.ihsc-header h2 {
    color: var(--navy);
    margin: 0 0 4px;
    font-size: 28px;
}
.ihsc-header p {
    color: var(--text-muted);
    margin: 0 0 20px;
}

.ihsc-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    border-bottom: 2px solid var(--border);
    margin-bottom: 20px;
}
.ihsc-tab {
    background: transparent;
    border: none;
    padding: 10px 18px;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-muted);
    cursor: pointer;
    border-bottom: 3px solid transparent;
    margin-bottom: -2px;
}
.ihsc-tab:hover { color: var(--teal-dark); }
.ihsc-tab.active {
    color: var(--navy);
    border-bottom-color: var(--teal);
}

.ihsc-panel { display: none; }
.ihsc-panel.active { display: block; }

.ihsc-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 16px;
    margin-bottom: 16px;
}

.ihsc-builder-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(420px, 1fr));
    gap: 16px;
    margin-bottom: 16px;
    align-items: start;
}

.ihsc-compare-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(360px, 1fr));
    gap: 16px;
    margin-bottom: 16px;
    align-items: start;
}

.ihsc-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 18px;
}
.ihsc-card.ihsc-full { grid-column: 1 / -1; }

.ihsc-builder-panel { border-left: 4px solid var(--border); }
.ihsc-additions-panel { border-left-color: var(--teal); background: linear-gradient(180deg, rgba(13,148,136,0.05), var(--card) 60px); }
.ihsc-deductions-panel { border-left-color: var(--navy); background: linear-gradient(180deg, rgba(15,36,57,0.05), var(--card) 60px); }
.ihsc-additions-panel h3::before { content: "+ "; color: var(--teal); }
.ihsc-deductions-panel h3::before { content: "\2212 "; color: var(--navy); }

.ihsc-scenario-panel { border-left: 4px solid var(--border); }
.ihsc-scenario-a { border-left-color: var(--teal); }
.ihsc-scenario-b { border-left-color: var(--navy); }

.ihsc-card h3 {
    color: var(--navy);
    margin: 0 0 12px;
    font-size: 16px;
}
.ihsc-card h4 {
    color: var(--navy);
    margin: 18px 0 8px;
    font-size: 14px;
}

#ihsc-app label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    color: var(--text-muted);
    margin: 10px 0 4px;
}
#ihsc-app label.ihsc-check-row {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 600;
    color: var(--text);
}
#ihsc-app label.ihsc-check-row input { width: auto; margin: 0; }

#ihsc-app input[type=number],
#ihsc-app input[type=text],
#ihsc-app select {
    width: 100%;
    padding: 9px 10px;
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 14px;
    color: var(--text);
    background: #fff;
}
#ihsc-app input:focus,
#ihsc-app select:focus {
    outline: none;
    border-color: var(--teal);
    box-shadow: 0 0 0 3px rgba(13, 148, 136, 0.15);
}

/* Period toggle (Annual CTC vs Monthly) */
.ihsc-toggle-row {
    display: flex;
    border: 1px solid var(--border);
    border-radius: 6px;
    overflow: hidden;
}
.ihsc-toggle-btn {
    flex: 1;
    background: #fff;
    border: none;
    padding: 9px 10px;
    font-size: 13px;
    font-weight: 700;
    color: var(--text-muted);
    cursor: pointer;
}
.ihsc-toggle-btn + .ihsc-toggle-btn { border-left: 1px solid var(--border); }
.ihsc-toggle-btn.active { background: var(--teal); color: #fff; }
.ihsc-toggle-btn:hover:not(.active) { background: var(--teal-light); }

/* Live summary bar */
.ihsc-summary-bar {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 12px;
    background: var(--navy);
    border-radius: 10px;
    padding: 16px 18px;
    margin-bottom: 16px;
    position: sticky;
    top: 8px;
    z-index: 5;
}
.ihsc-summary-item { display: flex; flex-direction: column; gap: 4px; }
.ihsc-summary-label { font-size: 12px; font-weight: 600; color: rgba(255,255,255,0.7); text-transform: uppercase; letter-spacing: 0.02em; }
.ihsc-summary-value { font-size: 20px; font-weight: 800; color: #fff; }
.ihsc-summary-add .ihsc-summary-value { color: #5eead4; }
.ihsc-summary-ded .ihsc-summary-value { color: #fca5a5; }
.ihsc-summary-net { border-left: 2px solid rgba(255,255,255,0.2); padding-left: 12px; }
.ihsc-summary-net .ihsc-summary-value { color: var(--teal-light); font-size: 24px; }

.ihsc-order-hint { background: #fff; border: 1px solid var(--border); border-radius: 8px; padding: 10px 14px; margin-bottom: 4px; }

.ihsc-btn {
    margin-top: 16px;
    width: 100%;
    background: var(--teal);
    color: #fff;
    border: none;
    padding: 11px 16px;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 700;
    cursor: pointer;
}
.ihsc-btn:hover { background: var(--teal-dark); }

.ihsc-btn-sm {
    background: var(--navy);
    color: #fff;
    border: none;
    padding: 7px 12px;
    border-radius: 5px;
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
}
.ihsc-btn-sm:hover { background: var(--navy-2); }
.ihsc-btn-danger { background: #7a1f2b; }
.ihsc-btn-danger:hover { background: #5c1620; }

.ihsc-result { background: var(--teal-light); border-color: var(--teal); }

.ihsc-big {
    font-size: 36px;
    font-weight: 800;
    color: var(--navy);
    margin-bottom: 12px;
}

.ihsc-table-out { width: 100%; border-collapse: collapse; font-size: 14px; }
.ihsc-table-out td { padding: 6px 4px; border-bottom: 1px solid rgba(15,36,57,0.1); color: var(--text); }
.ihsc-table-out td:first-child { color: var(--text-muted); font-weight: 600; }
.ihsc-table-out td:last-child { text-align: right; font-weight: 700; color: var(--navy); }

.ihsc-breakdown-table td { color: var(--text); }
.ihsc-breakdown-table td:first-child { text-align: left; font-weight: 600; color: var(--text-muted); }
.ihsc-breakdown-table td:last-child { text-align: right; color: var(--navy); }
.ihsc-breakdown-table th { text-align: left; color: var(--navy); background: var(--bg); padding: 6px 4px; border-bottom: 2px solid var(--border); }

.ihsc-curve { margin-top: 14px; background: #fff; border-radius: 8px; padding: 8px; border: 1px solid var(--border); }

.ihsc-pie-wrap { position: relative; }
.ihsc-pie-svg { width: 100%; height: auto; display: block; }
.ihsc-pie-slice { cursor: pointer; transition: transform 0.12s ease; }
.ihsc-pie-slice:hover { transform: scale(1.04); }
.ihsc-pie-tooltip {
    position: absolute;
    z-index: 10;
    pointer-events: none;
    background: rgba(15, 36, 57, 0.95);
    color: #fff;
    font-size: 12px;
    font-weight: 600;
    padding: 6px 10px;
    border-radius: 6px;
    white-space: nowrap;
    box-shadow: 0 4px 12px rgba(15, 36, 57, 0.25);
}

.ihsc-result-export { display: flex; gap: 8px; margin-top: 14px; flex-wrap: wrap; }

.ihsc-verdict {
    margin-top: 14px;
    padding: 12px 14px;
    border-radius: 8px;
    font-weight: 700;
    background: var(--navy);
    color: #fff;
}
.ihsc-verdict.ihsc-pass { background: var(--teal-dark); }
.ihsc-verdict.ihsc-warn { background: #b45309; }

.ihsc-hint { font-size: 13px; color: var(--text-muted); margin: 4px 0 12px; }

.ihsc-combobox { position: relative; }
.ihsc-combobox-toggle {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 9px 10px;
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 14px;
    color: var(--text);
    background: #fff;
    cursor: pointer;
    text-align: left;
}
.ihsc-combobox-toggle:focus { outline: none; border-color: var(--teal); box-shadow: 0 0 0 3px rgba(13, 148, 136, 0.15); }
.ihsc-combobox-arrow { color: var(--text-muted); font-size: 11px; margin-left: 8px; }
.ihsc-combobox-panel {
    position: absolute;
    top: calc(100% + 4px);
    left: 0;
    right: 0;
    z-index: 20;
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 8px;
    box-shadow: 0 8px 24px rgba(15, 36, 57, 0.15);
    padding: 8px;
}
.ihsc-combobox-panel input[type=text] {
    width: 100%;
    padding: 8px 10px;
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 13px;
    margin-bottom: 6px;
}
.ihsc-combobox-list { list-style: none; margin: 0; padding: 0; max-height: 220px; overflow-y: auto; }
.ihsc-combobox-list li {
    padding: 8px 10px;
    font-size: 13px;
    color: var(--text);
    cursor: pointer;
    border-radius: 5px;
}
.ihsc-combobox-list li:hover,
.ihsc-combobox-list li.ihsc-active { background: var(--teal-light); }
.ihsc-combobox-list li.ihsc-empty { color: var(--text-muted); cursor: default; }
.ihsc-combobox-list li.ihsc-empty:hover { background: transparent; }

.ihsc-table-scroll { overflow-x: auto; }

.ihsc-layers-head {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 8px;
}

.ihsc-layers-table { width: 100%; border-collapse: collapse; font-size: 13px; min-width: 560px; }
.ihsc-layers-table th {
    background: var(--navy);
    color: #fff;
    text-align: left;
    padding: 8px 10px;
}
.ihsc-layers-table td {
    padding: 6px 8px;
    border-bottom: 1px solid var(--border);
    color: var(--text);
    vertical-align: middle;
}
.ihsc-layers-table tr:nth-child(even) { background: #f6fbfa; }
.ihsc-layers-table select,
.ihsc-layers-table input { padding: 6px 8px; font-size: 13px; color: var(--text); }
.ihsc-row-amount { font-weight: 700; color: var(--navy); white-space: nowrap; }
.ihsc-row-actions { display: flex; gap: 4px; white-space: nowrap; align-items: center; }
.ihsc-row-actions button {
    background: var(--bg);
    border: 1px solid var(--border);
    color: var(--navy);
    border-radius: 4px;
    padding: 4px 7px;
    cursor: pointer;
    font-size: 12px;
}
.ihsc-row-actions button:hover { background: var(--teal-light); }
.ihsc-warn-icon {
    color: #b45309;
    font-weight: 800;
    cursor: help;
    margin-left: 4px;
}

.ihsc-cmp-table { min-width: 420px; font-size: 12px; }
.ihsc-cmp-table th, .ihsc-cmp-table td { padding: 5px 6px; }

.ihsc-template-actions {
    display: flex;
    gap: 8px;
    margin-bottom: 14px;
    flex-wrap: wrap;
    align-items: center;
}
.ihsc-template-actions select { width: auto; min-width: 200px; }

.ihsc-history-head {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 12px;
}
.ihsc-history-actions { display: flex; gap: 8px; flex-wrap: wrap; }

.ihsc-history-table { width: 100%; border-collapse: collapse; font-size: 13px; }
.ihsc-history-table th {
    background: var(--navy);
    color: #fff;
    text-align: left;
    padding: 8px 10px;
}
.ihsc-history-table td {
    padding: 8px 10px;
    border-bottom: 1px solid var(--border);
    color: var(--text);
}
.ihsc-history-table tr:nth-child(even) { background: #f6fbfa; }

.ihsc-empty { color: var(--text-muted); font-size: 13px; text-align: center; padding: 16px 0; }

.ihsc-disclaimer {
    text-align: center;
    color: var(--text-muted);
    font-size: 12px;
    margin-top: 24px;
}

/* Compare Scenarios result */
.ihsc-compare-result { border-color: var(--teal); }
.ihsc-compare-result-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 16px;
    margin-bottom: 14px;
}
.ihsc-compare-col {
    border: 2px solid var(--border);
    border-radius: 10px;
    padding: 14px;
}
.ihsc-compare-col.ihsc-winner { border-color: var(--teal); background: var(--teal-light); }
.ihsc-compare-col-label { font-weight: 700; color: var(--navy); font-size: 14px; margin-bottom: 6px; }
.ihsc-compare-col-net { font-size: 26px; font-weight: 800; color: var(--navy); margin-bottom: 10px; }
.ihsc-compare-verdict {
    background: var(--navy);
    color: #fff;
    border-radius: 8px;
    padding: 12px 14px;
    font-weight: 700;
    text-align: center;
}

@media (max-width: 600px) {
    .ihsc-big { font-size: 28px; }
    .ihsc-layers-head { flex-direction: column; align-items: flex-start; }
    .ihsc-summary-bar { position: static; }
}

/* ============================================================
   Printable payslip (screen preview hidden; used by print window)
   ============================================================ */
#ihsc-payslip-print { display: none; }
.ihsc-payslip-header { text-align: center; margin-bottom: 20px; }
.ihsc-payslip-header h1 { font-size: 22px; margin: 0 0 6px; color: #000; }
#ihsc-payslip-letterhead { font-size: 13px; color: #333; margin-bottom: 4px; }
#ihsc-payslip-meta { font-size: 12px; color: #333; }
.ihsc-payslip-table { width: 100%; border-collapse: collapse; margin-bottom: 16px; }
.ihsc-payslip-table th {
    text-align: left;
    padding: 6px 8px;
    border: 1px solid #999;
    background: #eee;
    color: #000;
    font-size: 13px;
}
.ihsc-payslip-table td {
    padding: 6px 8px;
    border: 1px solid #999;
    color: #000;
    font-size: 13px;
}
.ihsc-payslip-summary { width: 100%; border-collapse: collapse; margin-bottom: 20px; }
.ihsc-payslip-summary td { padding: 6px 8px; border: 1px solid #999; color: #000; font-size: 13px; }
.ihsc-payslip-summary td:first-child { font-weight: 700; }
.ihsc-payslip-summary td:last-child { text-align: right; }
.ihsc-payslip-net-row td { font-weight: 800; font-size: 15px; background: #f2f2f2; }
.ihsc-payslip-footer { text-align: center; font-size: 11px; color: #555; }