/* ============================================================
   Tool Styles — Marriage Tax Calculator v2.1
   File: /assets/css/modules/calculators/financialcalculators/marriage-tax-calculator.v2.1.css
   Purpose:
   - Tool-only layout and comparison visuals
   - No changes to ub-toolkit.v2.1.css
   - Mobile-first, 44x44 touch targets, clamp typography
   ============================================================ */

:root{
  --mtx-radius: 16px;
  --mtx-gap: 14px;
  --mtx-soft: rgba(0,0,0,.06);
  --mtx-soft-2: rgba(0,0,0,.04);
  --mtx-bonus: rgba(34,197,94,.22);
  --mtx-penalty: rgba(239,68,68,.22);
  --mtx-neutral: rgba(107,114,128,.18);
}

/* Header */
.mtx-head{
  display:flex;
  align-items:flex-start;
  justify-content:space-between;
  gap:12px;
  flex-wrap:wrap;
}
.mtx-title{
  margin:0;
  font-size:var(--ub-fs-5);
}
.mtx-subtitle{
  margin:6px 0 0;
  max-width:72ch;
}

/* Lists */
.mtx-list{
  margin:0;
  padding-left:18px;
}
.mtx-list li + li{
  margin-top:8px;
}

/* Hero layout */
.mtx-hero{
  display:grid;
  grid-template-columns:1.05fr .95fr;
  gap:var(--mtx-gap);
}
@media (max-width: 980px){
  .mtx-hero{
    grid-template-columns:1fr;
  }
}

/* Panels */
.mtx-panel{
  background:var(--ub-surface-2);
  border:1px solid var(--ub-border);
  border-radius:var(--mtx-radius);
  padding:12px;
}
.mtx-panel--inputs{
  padding:0;
  background:transparent;
  border:none;
}
.mtx-form{
  margin-bottom:0;
}
.mtx-panel-top{
  display:flex;
  justify-content:space-between;
  align-items:flex-start;
  gap:10px;
  flex-wrap:wrap;
  margin-bottom:10px;
}
.mtx-panel-title{
  font-size:clamp(13px, 1.2vw, 14px);
  font-weight:950;
  letter-spacing:.01em;
}
.mtx-panel-sub{
  font-size:12px;
  color:var(--ub-muted);
  margin-top:2px;
}

/* KPI tiles */
.mtx-kpis{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  justify-content:flex-end;
}
.mtx-kpi{
  min-width:120px;
  padding:8px 10px;
  border-radius:14px;
  border:1px solid var(--ub-border);
  background:var(--ub-card-bg);
}
.mtx-kpi .k{
  font-size:11px;
  font-weight:900;
  text-transform:uppercase;
  letter-spacing:.04em;
  color:var(--ub-muted);
}
.mtx-kpi .v{
  font-family:var(--ub-mono);
  font-weight:950;
  font-size:14px;
  margin-top:2px;
}

/* Meter */
.mtx-meter-wrap{
  margin-top:10px;
  padding:12px;
  border:1px solid var(--ub-border);
  border-radius:14px;
  background:var(--ub-card-bg);
}
.mtx-meter-labelrow{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  font-size:11px;
  font-weight:900;
  letter-spacing:.04em;
  text-transform:uppercase;
  color:var(--ub-muted);
  margin-bottom:8px;
}
#meterCenterLabel{
  color:var(--ub-text);
}
.mtx-meter{
  position:relative;
  height:18px;
  border-radius:999px;
  overflow:hidden;
  border:1px solid var(--ub-border);
  background:
    linear-gradient(
      90deg,
      var(--mtx-penalty) 0%,
      rgba(239,68,68,.10) 28%,
      var(--mtx-neutral) 50%,
      rgba(34,197,94,.10) 72%,
      var(--mtx-bonus) 100%
    );
}
.mtx-meter-bar{
  position:absolute;
  inset:0;
  background:
    linear-gradient(
      90deg,
      rgba(239,68,68,.18) 0%,
      rgba(239,68,68,.08) 30%,
      rgba(107,114,128,.08) 50%,
      rgba(34,197,94,.08) 70%,
      rgba(34,197,94,.18) 100%
    );
}
.mtx-meter-pointer{
  position:absolute;
  top:50%;
  left:50%;
  width:16px;
  height:16px;
  transform:translate(-50%, -50%);
  border-radius:50%;
  background:linear-gradient(92deg,var(--ub-btn-grad-a),var(--ub-btn-grad-b));
  border:2px solid rgba(0,0,0,.18);
  box-shadow:0 0 0 4px rgba(249,58,19,.14);
}
.mtx-meter-note{
  margin:10px 0 0;
}

/* Presets */
.mtx-preset-row{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-top:10px;
}
.mtx-preset-row .ub-chip{
  min-height:44px;
  padding:10px 12px;
}

/* Partner form sections */
.mtx-form-grid{
  display:grid;
  grid-template-columns:repeat(2, minmax(0,1fr));
  gap:14px;
}
@media (max-width: 900px){
  .mtx-form-grid{
    grid-template-columns:1fr;
  }
}
.mtx-group{
  padding:12px;
  border:1px solid var(--ub-border);
  border-radius:14px;
  background:var(--ub-surface-2);
}
.mtx-group-title{
  margin:0 0 12px;
  font-size:var(--ub-fs-2);
  font-weight:950;
  letter-spacing:-.01em;
}

/* Divider */
.mtx-divider{
  border:none;
  border-top:1px solid var(--ub-border);
  margin:14px 0;
}

/* Secondary options */
.mtx-options-grid{
  display:grid;
  grid-template-columns:repeat(2, minmax(0,1fr));
  gap:14px;
}
@media (max-width: 780px){
  .mtx-options-grid{
    grid-template-columns:1fr;
  }
}

.mtx-chip-row{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-top:12px;
}
.mtx-chip-row .ub-chip{
  display:inline-flex;
  align-items:center;
  gap:8px;
}

/* Buttons */
.mtx-actions{
  margin-top:12px;
  display:flex;
  flex-wrap:wrap;
  gap:10px;
}

/* Work */
.mtx-work{
  font-family:var(--ub-mono);
  font-size:13px;
  line-height:1.55;
  white-space:pre-wrap;
  overflow-wrap:anywhere;
}
.mtx-work-note{
  margin-top:10px;
  color:var(--ub-muted);
  font-size:12px;
}

/* Formula cards */
.mtx-formula-grid{
  display:grid;
  grid-template-columns:repeat(3, minmax(0,1fr));
  gap:10px;
  margin-top:12px;
}
@media (max-width: 820px){
  .mtx-formula-grid{
    grid-template-columns:1fr;
  }
}
.mtx-formula-card{
  padding:12px;
  border-radius:14px;
  border:1px solid var(--ub-border);
  background:var(--ub-surface-2);
}
.mtx-formula-title{
  font-size:12px;
  font-weight:950;
  text-transform:uppercase;
  letter-spacing:.05em;
  color:var(--ub-muted);
  margin-bottom:6px;
}
.mtx-formula-card code{
  display:block;
  font-family:var(--ub-mono);
  font-size:13px;
  overflow-wrap:anywhere;
  white-space:normal;
}

/* FAQ spacing */
.mtx-faq-q{
  margin:12px 0 6px;
}
.mtx-faq-a{
  margin:0 0 10px;
}
.mtx-faq-a:last-child{
  margin-bottom:0;
}

/* Enhance collapsible summary */
.ub-collapsible summary{
  cursor:pointer;
  font-weight:950;
  min-height:44px;
  display:flex;
  align-items:center;
}
.ub-collapsible summary:focus{
  outline:none;
  box-shadow:0 0 0 4px var(--ub-focus);
  border-radius:12px;
}

/* Block rail buttons */
.ub-btn--block{
  width:100%;
}

/* Small-screen polish */
@media (max-width: 560px){
  .mtx-kpi{
    min-width:102px;
  }

  .mtx-meter-labelrow{
    font-size:10px;
  }

  .mtx-group{
    padding:10px;
  }

  .mtx-panel,
  .mtx-meter-wrap,
  .mtx-formula-card{
    border-radius:12px;
  }
}

/* Dark mode nuance */
html.ub-theme-dark:root{
  --mtx-soft: rgba(255,255,255,.06);
  --mtx-soft-2: rgba(255,255,255,.04);
  --mtx-bonus: rgba(34,197,94,.18);
  --mtx-penalty: rgba(239,68,68,.18);
  --mtx-neutral: rgba(156,163,175,.14);
}