/* Reset */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
:root {
  --qatch-cyan:        #17a9d4;
  --qatch-cyan-dark:   #0d8ab3;
  --qatch-cyan-light:  #e6f6fb;
  --qatch-cyan-mid:    rgba(23, 169, 212, 0.15);
  --qatch-navy:        #1a2a3a;
  --qatch-navy-mid:    #2d4057;
  --bg-page:           #f0f6fa;
  --bg-hero:           linear-gradient(160deg, #cad6ed 0%, #ddeaf5 40%, #edf5fb 100%);
  --glass-bg:          rgba(255, 255, 255, 0.68);
  --glass-bg-hover:    rgba(255, 255, 255, 0.80);
  --glass-border:      rgba(255, 255, 255, 0.85);
  --glass-shadow:      0 8px 32px rgba(23, 169, 212, 0.12), 0 2px 8px rgba(26, 42, 58, 0.06);
  --text-primary:      #1a2a3a;
  --text-secondary:    #4a6070;
  --text-muted:        #8aa0b0;
  --text-on-dark:      #ffffff;
  --text-on-cyan:      #ffffff;
  --success:           #17a9d4;
  --danger:            #d94f4f;
  --warning:           #e8962a;
  --border-light:      rgba(23, 169, 212, 0.18);
  --border-mid:        rgba(23, 169, 212, 0.30);
  --radius-sm:         6px;
  --radius-md:         12px;
  --radius-lg:         20px;
  --radius-pill:       100px;
  --transition:        0.2s ease;
}

/* Base */
html {
  height: 100%;
  overflow: hidden;
}

body {
  font-family: 'Roboto', 'Montserrat', sans-serif;
  font-size: 15px;
  color: var(--text-primary);
  background: var(--bg-page);
  height: 100%;
  overflow: hidden;
  line-height: 1.6;
}

/* Layered light-blue background */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background: var(--bg-hero);
  z-index: 0;
  pointer-events: none;
}

/* Dot-grid texture */
body::after {
  content: '';
  position: fixed;
  inset: 0;
  background-image: radial-gradient(circle, rgba(23,169,212,0.12) 1px, transparent 1px);
  background-size: 32px 32px;
  z-index: 0;
  pointer-events: none;
}

/*  Page wrap */
.page-wrap {
  display: flex;
  flex-direction: column;
  height: 100vh;
  overflow: hidden;
  position: relative;
  z-index: 1;
}

/* Navigation bar */
.navbar {
  flex-shrink: 0;
  position: relative;
  display: flex;
  align-items: center;
  padding: 0 24px;
  height: 68px;
  background: rgba(255, 255, 255, 0.82);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 2px solid var(--qatch-cyan);
  z-index: 100;
}

.navbar-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  flex-shrink: 0;
}

.brand-text {
  display: flex;
  flex-direction: column;
}

.brand-name {
  font-family: 'Montserrat', sans-serif;
  font-weight: 700;
  font-size: 18px;
  color: var(--qatch-navy);
  letter-spacing: 0.04em;
  line-height: 1.1;
}

.brand-sub {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
}

/* Title */
.navbar-title {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  white-space: nowrap;
  pointer-events: none;
  font-family: 'Montserrat', sans-serif;
  font-size: 14px;
  font-weight: 400;
  color: var(--text-secondary);
  letter-spacing: 0.03em;
}

.navbar-title strong {
  font-weight: 700;
  color: var(--qatch-navy);
}

/* App body */
.app-body {
  flex: 1;
  min-height: 0;
  display: grid;
  grid-template-columns: 380px 1fr;
  gap: 10px;
  padding: 10px;
  overflow: hidden;
}

/*  Left panel */
#inputPanel {
  display: flex;
  flex-direction: column;
  min-height: 0;
}

#inputPanel > .card-header {
  flex-shrink: 0;
}

/* Inner body scrolls */
#inputPanel > .card-body {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  overflow-x: hidden;
  scroll-behavior: smooth;
}

/* Styled scrollbar */
#inputPanel > .card-body::-webkit-scrollbar { width: 5px; }
#inputPanel > .card-body::-webkit-scrollbar-track { background: transparent; }
#inputPanel > .card-body::-webkit-scrollbar-thumb {
  background: rgba(23,169,212,0.28);
  border-radius: 3px;
}
#inputPanel > .card-body::-webkit-scrollbar-thumb:hover {
  background: rgba(23,169,212,0.45);
}

/* Right panel: static, fills height  */
#resultsPanel {
  display: flex;
  flex-direction: column;
  min-height: 0;
  overflow: hidden;
}

/* Card header stays fixed at top of results panel */
#resultsPanel > .card-header {
  flex-shrink: 0;
}

/* Results content area scrolls internally */
.card-body-scroll {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  overflow-x: hidden;
  padding: 22px 24px;
}

/* Styled scrollbar for results panel */
.card-body-scroll::-webkit-scrollbar { width: 5px; }
.card-body-scroll::-webkit-scrollbar-track { background: transparent; }
.card-body-scroll::-webkit-scrollbar-thumb {
  background: rgba(23,169,212,0.28);
  border-radius: 3px;
}

/* Pinned citation at the bottom — never scrolls away */
.disclaimer-bar {
  cursor: default;
  user-select: none;
  flex-shrink: 0;
  padding: 9px 20px;
  font-size: 10.5px;
  color: var(--text-muted);
  font-style: italic;
  line-height: 1.5;
  background: rgba(230, 246, 251, 0.88);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-top: 1px solid var(--border-light);
}

.disclaimer-bar a {
  color: var(--qatch-cyan-dark);
  text-decoration: none;
}

.disclaimer-bar a:hover { text-decoration: underline; }

/* Portrait: stack panels vertically, restore scroll */
@media (max-width: 939px) {
  html, body { overflow: auto; height: auto; }

  .page-wrap {
    height: auto;
    overflow: visible;
  }

  .app-body {
    grid-template-columns: 1fr;
    overflow: visible;
    height: auto;
    flex: none;
  }

  .navbar-title { display: none; }

  #inputPanel { overflow: visible; height: auto; }
  #inputPanel > .card-body { overflow: visible; height: auto; }
  #resultsPanel { overflow: visible; height: auto; }

  .card-body-scroll {
    overflow: visible;
    height: auto;
    padding: 22px 24px;
  }

  .disclaimer-bar { border-radius: 0 0 var(--radius-lg) var(--radius-lg); }
}


/* Glass card */
.glass-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  box-shadow: var(--glass-shadow);
  overflow: hidden;
  transition: box-shadow var(--transition);
}

.glass-card:hover {
  box-shadow:
    0 12px 40px rgba(23, 169, 212, 0.16),
    0 2px 10px rgba(26, 42, 58, 0.07);
}

/* Card header */
.card-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 20px 12px;
  border-bottom: 1px solid rgba(23,169,212,0.10);
  background: rgba(255,255,255,0.40);
}

.card-icon {
  width: 32px;
  height: 32px;
  border-radius: 9px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 16px;
}

.card-icon.cyan { background: var(--qatch-cyan-mid); }
.card-icon.navy { background: rgba(26,42,58,0.08); }

.card-title {
  font-family: 'Montserrat', sans-serif;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--text-secondary);
  cursor: default;
  user-select: none;
}

/* .card-body kept for left panel */
.card-body {
  padding: 18px 20px;
}


/* Section dividers inside cards */
.section-label {
  font-family: 'Montserrat', sans-serif;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--qatch-cyan-dark);
  margin-bottom: 14px;
  padding-bottom: 7px;
  border-bottom: 2px solid var(--qatch-cyan-light);
  display: flex;
  align-items: center;
  gap: 7px;
}

.section-icon {
  width: 14px;
  height: 14px;
  display: inline-flex;
  align-items: center;
  cursor: default;
  user-select: none;
}

.divider {
  height: 1px;
  background: rgba(23,169,212,0.12);
  margin: 18px 0;
}

/* Form fields */
.field {
  margin-bottom: 14px;
}

.field label {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 12px;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 6px;
  font-family: 'Montserrat', sans-serif;
  letter-spacing: 0.02em;
}

.field label .unit {
  cursor: default;
  user-select: none;
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  background: rgba(23,169,212,0.08);
  border: 1px solid var(--border-light);
  padding: 2px 8px;
  border-radius: var(--radius-pill);
}

/* Plain text inputs — no spinners */
.field input[type="text"],
.field input[type="number"],
.field select {
  width: 100%;
  background: rgba(255, 255, 255, 0.75);
  border: 1px solid rgba(23,169,212,0.22);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-family: 'Roboto', monospace;
  font-size: 14px;
  font-weight: 500;
  padding: 10px 14px;
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition), background var(--transition);
  -webkit-appearance: none;
  appearance: none;
}

/* Hide number spinners */
.field input[type="number"]::-webkit-inner-spin-button,
.field input[type="number"]::-webkit-outer-spin-button {
  -webkit-appearance: none;
  appearance: none;
  margin: 0;
}
.field input[type="number"] { -moz-appearance: textfield; }

.field input:focus,
.field select:focus {
  border-color: var(--qatch-cyan);
  background-color: rgba(255,255,255,0.92);
  box-shadow: 0 0 0 3px rgba(23,169,212,0.12);
}

.field input::placeholder {
  color: var(--text-muted);
  font-weight: 400;
}

.field select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%2317a9d4' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 36px;
  cursor: pointer;
}

.field-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

/* Charge mode toggle */
.mode-toggle {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  border: 1px solid var(--border-mid);
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-bottom: 16px;
  background: rgba(255,255,255,0.5);
}

.mode-btn {
  padding: 9px 12px;
  border: none;
  background: transparent;
  color: var(--text-secondary);
  font-family: 'Montserrat', sans-serif;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.04em;
  cursor: pointer;
  transition: background var(--transition), color var(--transition);
  text-align: center;
}

.mode-toggle.three {
  grid-template-columns: 1fr 1fr 1fr;
}
.mode-toggle.three .mode-btn:not(:last-child) {
  border-right: 1px solid var(--border-light);
}

.mode-btn:first-child {
  border-right: 1px solid var(--border-light);
}

.mode-btn.active {
  background: var(--qatch-cyan);
  color: var(--text-on-cyan);
}

.mode-btn:not(.active):hover {
  background: var(--qatch-cyan-light);
  color: var(--qatch-cyan-dark);
}

/* Primary CTA button — QATCH solid dark style */
.btn-primary {
  display: block;
  width: 100%;
  padding: 13px 20px;
  border-radius: var(--radius-pill);
  border: none;
  background: var(--qatch-navy);
  color: #ffffff;
  font-family: 'Montserrat', sans-serif;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.10em;
  text-transform: uppercase;
  cursor: pointer;
  transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
  margin-top: 8px;
}

.btn-primary:hover {
  background: var(--qatch-cyan);
  transform: translateY(-1px);
  box-shadow: 0 8px 24px rgba(23,169,212,0.28);
}

.btn-primary:active {
  transform: translateY(0);
  box-shadow: none;
}

/* Outlined button */
.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 22px;
  border-radius: var(--radius-pill);
  border: 2px solid var(--qatch-navy);
  background: rgba(255,255,255,0.6);
  color: var(--qatch-navy);
  font-family: 'Montserrat', sans-serif;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
}

.btn-outline:hover {
  background: var(--qatch-navy);
  color: #ffffff;
}

/* Error box */
.error-box {
  background: rgba(217,79,79,0.08);
  border: 1px solid rgba(217,79,79,0.25);
  border-radius: var(--radius-md);
  color: var(--danger);
  font-size: 13px;
  padding: 12px 16px;
  margin-top: 14px;
  line-height: 1.5;
}

/* Scrollbar */
::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
  background: rgba(23,169,212,0.25);
  border-radius: 3px;
}

/* Empty state */
.results-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 420px;
  text-align: center;
  gap: 16px;
  padding: 48px 32px;
}

/*  empty state  */
.empty-icon {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: var(--qatch-cyan-light);
  border: 2px solid var(--border-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 30px;
  color: var(--qatch-cyan);
}

.empty-title {
  font-family: 'Montserrat', sans-serif;
  font-weight: 700;
  font-size: 16px;
  color: var(--text-secondary);
}

.empty-text {
  cursor: default;
  user-select: none;
  font-size: 13px;
  color: var(--text-muted);
  max-width: 280px;
  line-height: 1.65;
}

/* Metric grid */
.metric-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-bottom: 22px;
}

@media (max-width: 680px) {
  .metric-grid { grid-template-columns: repeat(2, 1fr); }
}

.metric-card {
  background: rgba(255,255,255,0.60);
  border: 1px solid rgba(23,169,212,0.14);
  border-radius: var(--radius-md);
  padding: 14px 16px;
  transition: border-color var(--transition);
}

.metric-card:hover {
  border-color: var(--border-mid);
}

.metric-card.highlight {
  background: rgba(23,169,212,0.08);
  border-color: var(--qatch-cyan);
}

.metric-card.highlight .metric-value {
  color: var(--qatch-cyan-dark);
}

.metric-label {
  font-family: 'Montserrat', sans-serif;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.10em;
  text-transform: none;
  color: var(--text-muted);
  margin-bottom: 6px;
}

.metric-value {
  font-family: 'Roboto', monospace;
  font-size: 22px;
  font-weight: 500;
  color: var(--text-primary);
  line-height: 1.2;
  letter-spacing: -0.01em;
}

.metric-delta {
  font-size: 11px;
  margin-top: 3px;
  font-weight: 500;
}

.metric-delta.up      { color: var(--qatch-cyan-dark); }
.metric-delta.down    { color: var(--danger); }
.metric-delta.neutral { color: var(--text-muted); }

/* Species bar chart  */
.section-title {
  font-family: 'Montserrat', sans-serif;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.section-title::after {
  content: '';
  flex: 1;
  height: 1px;
  background: rgba(23,169,212,0.15);
}

.species-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.species-row {
  display: flex;
  align-items: center;
  gap: 10px;
}

.species-name {
  font-family: 'Roboto', monospace;
  font-size: 12px;
  color: var(--text-secondary);
  min-width: 130px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.bar-track {
  flex: 1;
  height: 6px;
  background: rgba(23,169,212,0.08);
  border-radius: 3px;
  overflow: hidden;
  position: relative;
}

.bar-compare {
  position: absolute;
  top: 0;
  height: 100%;
  border-radius: 3px;
  opacity: 0.22;
}

.bar-fill {
  height: 100%;
  border-radius: 3px;
  transition: width 0.55s cubic-bezier(0.4, 0, 0.2, 1);
  min-width: 2px;
}

.species-val {
  font-family: 'Roboto', monospace;
  font-size: 12px;
  color: var(--text-primary);
  min-width: 70px;
  text-align: right;
  white-space: nowrap;
  font-weight: 500;
}

.species-delta {
  font-size: 9px;
  color: var(--text-muted);
}

/* Charge badges  */
.charge-badge {
  font-family: 'Roboto', monospace;
  font-size: 10px;
  font-weight: 700;
  padding: 1px 6px;
  border-radius: var(--radius-sm);
  min-width: 26px;
  text-align: center;
}

.charge-pos { background: rgba(23,169,212,0.12); color: var(--qatch-cyan-dark); }
.charge-neg { background: rgba(217,79,79,0.10);  color: var(--danger); }
.charge-zer { background: rgba(26,42,58,0.06);   color: var(--text-muted); }

/* Legend  */
.legend {
  display: flex;
  gap: 20px;
  margin-top: 14px;
  flex-wrap: wrap;
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 11px;
  color: var(--text-secondary);
}

.legend-dot {
  width: 10px;
  height: 10px;
  border-radius: 3px;
  flex-shrink: 0;
}

/* Totals grid */
.totals-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px;
  margin-top: 16px;
}

.total-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: rgba(255,255,255,0.55);
  border: 1px solid rgba(23,169,212,0.10);
  border-radius: 8px;
  padding: 8px 12px;
  font-size: 12px;
  gap: 8px;
}

.total-item .name {
  color: var(--text-secondary);
  font-weight: 500;
  white-space: nowrap;
}

.total-item .vals {
  display: flex;
  align-items: center;
  gap: 5px;
  font-family: 'Roboto', monospace;
  font-size: 12px;
  color: var(--text-primary);
  font-weight: 500;
}

.total-item .arrow {
  color: var(--qatch-cyan);
  font-size: 12px;
}

.total-item .unit-sm {
  font-size: 10px;
  color: var(--text-muted);
}

/* ══════════════════════════════════════════════════════════════
   NAVBAR — About button
   ══════════════════════════════════════════════════════════════ */
.navbar-about-btn {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 7px 16px;
  border-radius: var(--radius-pill);
  border: 1.5px solid var(--border-mid);
  background: rgba(23,169,212,0.07);
  color: var(--qatch-cyan-dark);
  font-family: 'Montserrat', sans-serif;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.04em;
  cursor: pointer;
  transition: background var(--transition), border-color var(--transition),
              transform var(--transition);
  margin-left: auto;      /* pushes to right even when title is centered */
}

.navbar-about-btn:hover {
  background: var(--qatch-cyan-light);
  border-color: var(--qatch-cyan);
  transform: translateY(-1px);
}

.navbar-about-btn svg { flex-shrink: 0; }

/* ══════════════════════════════════════════════════════════════
   DRAWER — backdrop + panel
   ══════════════════════════════════════════════════════════════ */
.drawer-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(26, 42, 58, 0.35);
  backdrop-filter: blur(3px);
  -webkit-backdrop-filter: blur(3px);
  z-index: 200;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.28s ease;
}

.drawer-backdrop.open {
  opacity: 1;
  pointer-events: all;
}

.info-drawer {
  position: fixed;
  top: 0;
  right: 0;
  width: min(480px, 95vw);
  height: 100vh;
  background: rgba(255, 255, 255, 0.97);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-left: 1px solid var(--glass-border);
  box-shadow: -8px 0 40px rgba(26, 42, 58, 0.12);
  z-index: 201;
  display: flex;
  flex-direction: column;
  transform: translateX(100%);
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.info-drawer.open {
  transform: translateX(0);
}

/* Drawer header */
.drawer-header {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
  height: 68px;
  border-bottom: 2px solid var(--qatch-cyan);
  background: rgba(255, 255, 255, 0.9);
}

.drawer-title {
  font-family: 'Montserrat', sans-serif;
  font-size: 15px;
  font-weight: 700;
  color: var(--qatch-navy);
  letter-spacing: 0.02em;
}

.drawer-close {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  border: 1px solid var(--border-light);
  background: rgba(23,169,212,0.07);
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background var(--transition), color var(--transition);
}

.drawer-close:hover {
  background: var(--qatch-cyan-light);
  color: var(--qatch-navy);
}

/* Drawer scrollable body */
.drawer-body {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  padding: 12px 0;
}

.drawer-body::-webkit-scrollbar { width: 4px; }
.drawer-body::-webkit-scrollbar-track { background: transparent; }
.drawer-body::-webkit-scrollbar-thumb {
  background: rgba(23,169,212,0.25);
  border-radius: 2px;
}

/* ── Accordion sections ── */
.info-section {
  border-bottom: 1px solid rgba(23,169,212,0.10);
}

.accordion-btn {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 14px 20px;
  border: none;
  background: transparent;
  color: var(--qatch-navy);
  font-family: 'Montserrat', sans-serif;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.03em;
  cursor: pointer;
  text-align: left;
  transition: background var(--transition);
}

.accordion-btn:hover { background: var(--qatch-cyan-light); }
.accordion-btn.active { color: var(--qatch-cyan-dark); }

.accordion-btn .chevron {
  margin-left: auto;
  transition: transform 0.22s ease;
  flex-shrink: 0;
}

.accordion-btn.active .chevron {
  transform: rotate(180deg);
}

.accordion-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.2s ease;
  padding: 0 20px;
}

.accordion-body.open {
  max-height: 2000px;
  padding: 4px 20px 18px;
}

/* Body typography */
.accordion-body p {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 10px;
}

.accordion-body p:last-child { margin-bottom: 0; }

.accordion-body ul {
  padding-left: 18px;
  margin-bottom: 10px;
}

.accordion-body li {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 3px;
}

blockquote {
  margin: 10px 0 12px;
  padding: 10px 14px;
  background: var(--qatch-cyan-light);
  border-left: 3px solid var(--qatch-cyan);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-size: 12px;
  color: var(--text-secondary);
  font-style: italic;
  line-height: 1.6;
}

blockquote a {
  color: var(--qatch-cyan-dark);
  display: block;
  margin-top: 4px;
  font-style: normal;
  font-size: 11px;
}

.info-subhead {
  font-family: 'Montserrat', sans-serif;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--qatch-cyan-dark);
  margin: 14px 0 7px;
  padding-bottom: 5px;
  border-bottom: 1px solid var(--qatch-cyan-light);
}

.info-note {
  font-size: 11px !important;
  color: var(--text-muted) !important;
  font-style: italic;
  background: rgba(23,169,212,0.05);
  padding: 7px 10px;
  border-radius: var(--radius-sm);
  margin-top: 6px !important;
}

.link-list { list-style: none; padding-left: 0 !important; }
.link-list li { margin-bottom: 5px !important; }
.link-list a {
  color: var(--qatch-cyan-dark);
  font-size: 13px;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.link-list a::after {
  content: '↗';
  font-size: 10px;
  opacity: 0.6;
}
.link-list a:hover { text-decoration: underline; }

/* Disclaimer text within accordion */
.disclaimer-text {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 10px;
  padding: 8px 12px;
  background: rgba(217, 79, 79, 0.04);
  border-left: 3px solid rgba(217, 79, 79, 0.3);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

/* ── Contact form ── */
.contact-form {
  margin: 4px 0 14px;
}

.contact-field {
  margin-bottom: 12px;
}

.contact-field label {
  display: block;
  font-family: 'Montserrat', sans-serif;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-bottom: 5px;
}

.contact-field input,
.contact-field textarea {
  width: 100%;
  background: rgba(255,255,255,0.85);
  border: 1px solid rgba(23,169,212,0.25);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-family: 'Roboto', sans-serif;
  font-size: 13px;
  padding: 9px 12px;
  outline: none;
  resize: vertical;
  transition: border-color var(--transition), box-shadow var(--transition);
  -webkit-appearance: none;
}

.contact-field input:focus,
.contact-field textarea:focus {
  border-color: var(--qatch-cyan);
  box-shadow: 0 0 0 3px rgba(23,169,212,0.10);
}

.contact-field textarea { min-height: 90px; }

.contact-submit {
  width: 100%;
  padding: 11px;
  border-radius: var(--radius-pill);
  border: none;
  background: var(--qatch-navy);
  color: #ffffff;
  font-family: 'Montserrat', sans-serif;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  cursor: pointer;
  transition: background var(--transition), transform var(--transition);
}

.contact-submit:hover {
  background: var(--qatch-cyan);
  transform: translateY(-1px);
}

.contact-confirm {
  margin-top: 10px;
  padding: 10px 12px;
  background: rgba(23,169,212,0.08);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  font-size: 12px;
  color: var(--qatch-cyan-dark);
  line-height: 1.5;
}

.contact-confirm a {
  color: var(--qatch-cyan-dark);
  font-weight: 600;
}

.contact-direct {
  cursor: default;
  user-select: none;
  font-size: 12px;
  color: var(--text-muted);
  text-align: center;
  padding-top: 4px;
}

.contact-direct a {
  color: var(--qatch-cyan-dark);
  font-weight: 600;
  text-decoration: none;
}

.contact-direct a:hover { text-decoration: underline; }

/* Scrollbar (global fallback) */
::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
  background: rgba(23,169,212,0.25);
  border-radius: 3px;
}
/* ══════════════════════════════════════════════════════════════
   INJECTION FORCE CALCULATOR — additional components
   (extends the QATCH glass design system above)
   ══════════════════════════════════════════════════════════════ */

/* Left column now holds TWO stacked tiles that scroll together */
#inputColumn {
  display: flex;
  flex-direction: column;
  gap: 10px;
  min-height: 0;
  overflow-y: auto;
  overflow-x: hidden;
  padding-right: 3px;
  scroll-behavior: smooth;
}
#inputColumn::-webkit-scrollbar { width: 5px; }
#inputColumn::-webkit-scrollbar-track { background: transparent; }
#inputColumn::-webkit-scrollbar-thumb { background: rgba(23,169,212,0.28); border-radius: 3px; }
#inputColumn::-webkit-scrollbar-thumb:hover { background: rgba(23,169,212,0.45); }

/* Each tile is a self-contained glass card; let the column scroll, not the card */
.input-tile { flex-shrink: 0; }
.input-tile .card-body { padding: 16px 18px; }

@media (max-width: 939px) {
  #inputColumn { overflow: visible; height: auto; }
}

/* Tile header gets a little numbered step chip */
.step-chip {
  margin-left: auto;
  font-family: 'Roboto', monospace;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--qatch-cyan-dark);
  background: var(--qatch-cyan-mid);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-pill);
  padding: 3px 9px;
  white-space: nowrap;
}

/* Data entry textarea (shear, viscosity pairs) */
.data-area {
  width: 100%;
  min-height: 120px;
  background: rgba(255,255,255,0.78);
  border: 1px solid rgba(23,169,212,0.22);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-family: 'Roboto', monospace;
  font-size: 13px;
  line-height: 1.55;
  padding: 10px 12px;
  outline: none;
  resize: vertical;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.data-area:focus {
  border-color: var(--qatch-cyan);
  box-shadow: 0 0 0 3px rgba(23,169,212,0.12);
}
.data-hint {
  font-size: 11px;
  color: var(--text-muted);
  margin: 6px 2px 12px;
  line-height: 1.5;
}
.data-hint code {
  background: rgba(23,169,212,0.08);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  padding: 1px 6px;
  font-size: 11px;
  color: var(--qatch-cyan-dark);
}

/* CSV upload row */
.file-row { display: flex; gap: 8px; align-items: center; margin-bottom: 12px; flex-wrap: wrap; }
.file-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  border-radius: var(--radius-pill);
  border: 1.5px solid var(--border-mid);
  background: rgba(23,169,212,0.07);
  color: var(--qatch-cyan-dark);
  font-family: 'Montserrat', sans-serif;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.04em;
  cursor: pointer;
  transition: background var(--transition), border-color var(--transition);
}
.file-btn:hover { background: var(--qatch-cyan-light); border-color: var(--qatch-cyan); }
.file-name { font-size: 11px; color: var(--text-muted); font-family: 'Roboto', monospace; }

/* Collapsible "advanced settings" */
.advanced {
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  background: rgba(255,255,255,0.45);
  margin-bottom: 14px;
  overflow: hidden;
}
.advanced-toggle {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  border: none;
  background: transparent;
  color: var(--text-secondary);
  font-family: 'Montserrat', sans-serif;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  cursor: pointer;
}
.advanced-toggle .chevron { margin-left: auto; transition: transform 0.22s ease; }
.advanced-toggle.open .chevron { transform: rotate(180deg); }
.advanced-body { max-height: 0; overflow: hidden; transition: max-height 0.3s ease, padding 0.2s ease; padding: 0 14px; }
.advanced-body.open { max-height: 600px; padding: 4px 14px 12px; }
.field-row.triple { grid-template-columns: 1fr 1fr 1fr; }

/* Derived value chips (Q / velocity readouts) */
.derived-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin: 4px 0 14px;
}
.derived-chip {
  background: rgba(23,169,212,0.06);
  border: 1px dashed var(--border-mid);
  border-radius: var(--radius-md);
  padding: 8px 12px;
}
.derived-chip .d-label {
  font-family: 'Montserrat', sans-serif;
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.10em;
  text-transform: uppercase;
  color: var(--text-muted);
}
.derived-chip .d-val {
  font-family: 'Roboto', monospace;
  font-size: 15px;
  font-weight: 500;
  color: var(--qatch-cyan-dark);
  margin-top: 2px;
}
.derived-chip .d-val small { font-size: 10px; color: var(--text-muted); }

/* Info bubble (φ, friction explanations) */
.label-info {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.info-dot {
  width: 15px; height: 15px;
  border-radius: 50%;
  border: 1.4px solid var(--border-mid);
  color: var(--qatch-cyan-dark);
  background: rgba(23,169,212,0.08);
  font-size: 10px;
  font-weight: 700;
  font-family: 'Montserrat', sans-serif;
  display: inline-flex; align-items: center; justify-content: center;
  cursor: pointer;
  flex-shrink: 0;
  transition: background var(--transition);
}
.info-dot:hover { background: var(--qatch-cyan-light); }
.info-pop {
  display: none;
  font-size: 11px;
  line-height: 1.55;
  color: var(--text-secondary);
  background: rgba(23,169,212,0.06);
  border: 1px solid var(--border-light);
  border-left: 3px solid var(--qatch-cyan);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: 8px 11px;
  margin: 2px 0 12px;
}
.info-pop.open { display: block; }
.info-pop a { color: var(--qatch-cyan-dark); }

/* Secondary (ghost) button for the viscosity tile */
.btn-ghost {
  display: block;
  width: 100%;
  padding: 12px 20px;
  border-radius: var(--radius-pill);
  border: 2px solid var(--qatch-cyan);
  background: rgba(23,169,212,0.06);
  color: var(--qatch-cyan-dark);
  font-family: 'Montserrat', sans-serif;
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  cursor: pointer;
  transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
  margin-top: 6px;
}
.btn-ghost:hover { background: var(--qatch-cyan); color: #fff; transform: translateY(-1px); box-shadow: 0 8px 20px rgba(23,169,212,0.22); }
.btn-ghost:active { transform: translateY(0); box-shadow: none; }

/* Results: section block with a heading band */
.result-block { margin-bottom: 26px; }
.result-block:last-child { margin-bottom: 0; }

.block-head {
  display: flex;
  align-items: center;
  gap: 9px;
  margin-bottom: 14px;
}
.block-head .bh-icon {
  width: 28px; height: 28px;
  border-radius: 8px;
  background: var(--qatch-cyan-mid);
  color: var(--qatch-cyan-dark);
  display: flex; align-items: center; justify-content: center; flex-shrink: 0;
}
.block-head .bh-title {
  font-family: 'Montserrat', sans-serif;
  font-size: 12px; font-weight: 700; letter-spacing: 0.10em; text-transform: uppercase;
  color: var(--text-secondary);
}
.block-head .bh-badge {
  margin-left: auto;
  font-family: 'Montserrat', sans-serif;
  font-size: 9.5px; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase;
  padding: 3px 10px; border-radius: var(--radius-pill);
}
.badge-cy   { background: rgba(23,169,212,0.12); color: var(--qatch-cyan-dark); border: 1px solid var(--border-light); }
.badge-newt { background: rgba(26,42,58,0.07);  color: var(--qatch-navy);      border: 1px solid rgba(26,42,58,0.12); }
.conf-good     { background: rgba(23,169,212,0.12); color: var(--qatch-cyan-dark); }
.conf-moderate { background: rgba(232,150,42,0.14); color: var(--warning); }
.conf-weak     { background: rgba(217,79,79,0.12);  color: var(--danger); }

/* Metric card: CI sub-range line + 4-up variant */
.metric-grid.four { grid-template-columns: repeat(2, 1fr); }
.metric-value small { font-size: 12px; color: var(--text-muted); font-weight: 400; }
.metric-ci {
  font-family: 'Roboto', monospace;
  font-size: 10.5px;
  color: var(--text-muted);
  margin-top: 4px;
}
.metric-ci b { color: var(--text-secondary); font-weight: 600; }

/* Chart wrapper */
.chart-card {
  background: rgba(255,255,255,0.55);
  border: 1px solid rgba(23,169,212,0.14);
  border-radius: var(--radius-md);
  padding: 14px 14px 10px;
  margin-top: 4px;
}
.chart-wrap { height: 320px; position: relative; }
.chart-legend {
  display: flex; gap: 16px; flex-wrap: wrap;
  margin-top: 10px; padding-top: 10px;
  border-top: 1px solid rgba(23,169,212,0.12);
}
.chart-legend .legend-item { font-size: 11px; color: var(--text-secondary); }
.legend-swatch { width: 16px; height: 10px; border-radius: 2px; flex-shrink: 0; }
.legend-line { width: 16px; height: 0; border-top: 2px solid; flex-shrink: 0; }
.legend-dot2 { width: 9px; height: 9px; border-radius: 50%; flex-shrink: 0; }

/* Diagnostics / warnings */
.warn-list { display: flex; flex-direction: column; gap: 6px; margin-top: 12px; }
.warn-item {
  display: flex; align-items: flex-start; gap: 8px;
  font-size: 12px; color: var(--text-secondary); line-height: 1.5;
  background: rgba(232,150,42,0.06);
  border: 1px solid rgba(232,150,42,0.18);
  border-radius: var(--radius-sm);
  padding: 8px 11px;
}
.warn-item svg { flex-shrink: 0; color: var(--warning); margin-top: 1px; }
.ok-note {
  display: flex; align-items: center; gap: 8px;
  font-size: 12px; color: var(--qatch-cyan-dark); margin-top: 12px;
  background: rgba(23,169,212,0.06);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  padding: 8px 11px;
}

/* ── FORCE GAUGE ───────────────────────────────────────────────── */
.gauge-card {
  background: rgba(255,255,255,0.55);
  border: 1px solid rgba(23,169,212,0.14);
  border-radius: var(--radius-md);
  padding: 20px 20px 16px;
  margin-top: 4px;
}
.gauge-readout {
  display: flex; align-items: baseline; gap: 10px; margin-bottom: 18px;
}
.gauge-readout .g-value {
  font-family: 'Roboto', monospace;
  font-size: 38px; font-weight: 500; line-height: 1;
  color: var(--qatch-navy); letter-spacing: -0.02em;
}
.gauge-readout .g-unit { font-size: 16px; color: var(--text-muted); font-weight: 500; }
.gauge-readout .g-range {
  margin-left: auto; text-align: right;
  font-family: 'Roboto', monospace; font-size: 12px; color: var(--text-secondary);
}
.gauge-readout .g-range span { color: var(--text-muted); font-size: 10px; display: block; letter-spacing: 0.06em; }

.gauge-track {
  position: relative;
  height: 22px;
  border-radius: var(--radius-pill);
  overflow: hidden;
  display: flex;
  box-shadow: inset 0 1px 3px rgba(26,42,58,0.12);
}
.gauge-zone { height: 100%; }
.gauge-zone.z-easy { background: rgba(23,169,212,0.55); }
.gauge-zone.z-mod  { background: rgba(102,187,106,0.55); }
.gauge-zone.z-firm { background: rgba(232,150,42,0.6); }
.gauge-zone.z-high { background: rgba(217,79,79,0.62); }

/* CI span sits above the track */
.gauge-ci {
  position: absolute; top: 0; height: 100%;
  background: rgba(26,42,58,0.16);
  border-left: 1px solid rgba(26,42,58,0.35);
  border-right: 1px solid rgba(26,42,58,0.35);
  pointer-events: none;
}
.gauge-marker {
  position: absolute; top: -5px; bottom: -5px;
  width: 3px;
  background: var(--qatch-navy);
  border-radius: 2px;
  box-shadow: 0 0 0 2px rgba(255,255,255,0.85);
  transition: left 0.6s cubic-bezier(0.4,0,0.2,1);
}
.gauge-marker::after {
  content: '';
  position: absolute; top: -7px; left: 50%; transform: translateX(-50%);
  border-left: 5px solid transparent; border-right: 5px solid transparent;
  border-top: 7px solid var(--qatch-navy);
}
.gauge-scale {
  display: flex; justify-content: space-between;
  margin-top: 8px;
  font-family: 'Roboto', monospace; font-size: 10px; color: var(--text-muted);
}
.gauge-labels {
  display: flex; margin-top: 12px; gap: 6px; flex-wrap: wrap;
}
.gauge-tag {
  display: inline-flex; align-items: center; gap: 5px;
  font-size: 10.5px; color: var(--text-secondary);
}
.gauge-tag .gt-dot { width: 10px; height: 10px; border-radius: 3px; }
.gauge-verdict {
  margin-top: 14px;
  font-size: 12.5px; line-height: 1.55; color: var(--text-secondary);
  background: rgba(23,169,212,0.05);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  padding: 10px 13px;
}
.gauge-verdict b { color: var(--qatch-navy); }

/* Force breakdown rows */
.breakdown { margin-top: 16px; display: flex; flex-direction: column; gap: 7px; }
.bd-row {
  display: flex; align-items: center; justify-content: space-between;
  background: rgba(255,255,255,0.55);
  border: 1px solid rgba(23,169,212,0.10);
  border-radius: 8px; padding: 9px 13px; font-size: 12.5px;
}
.bd-row .bd-name { color: var(--text-secondary); display: flex; align-items: center; gap: 7px; }
.bd-row .bd-name .op { color: var(--qatch-cyan); font-family: 'Roboto', monospace; font-weight: 700; }
.bd-row .bd-val { font-family: 'Roboto', monospace; color: var(--text-primary); font-weight: 500; }
.bd-row.total {
  background: rgba(23,169,212,0.08);
  border-color: var(--qatch-cyan);
}
.bd-row.total .bd-name { color: var(--qatch-navy); font-weight: 600; }
.bd-row.total .bd-val { color: var(--qatch-cyan-dark); font-weight: 700; font-size: 14px; }

/* ════════════════════════════════════════════════════════════════
   CUSTOM ICON PLACEHOLDERS
   Drop a file at the path shown in each slot's title (e.g. icons/brand.svg)
   and it auto-replaces the inline default. Missing files fall back
   silently to the default SVG — no broken-image state.
   ════════════════════════════════════════════════════════════════ */
.icon-slot {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: none;
  line-height: 0;
}
.icon-slot .custom-icon { display: none; object-fit: contain; }
.icon-slot .custom-icon.loaded { display: block; }
.icon-slot .custom-icon.loaded ~ .default-icon { display: none; }
.icon-slot.brand-slot .custom-icon { width: 44px; height: 44px; border-radius: 11px; }
.icon-slot.head-slot  .custom-icon { width: 18px; height: 18px; }
.icon-slot.sec-slot   .custom-icon { width: 14px; height: 14px; }

/* ════════════════════════════════════════════════════════════════
   VISCOSITY MEASUREMENT GRID  (discrete shear / viscosity boxes)
   ════════════════════════════════════════════════════════════════ */
.visc-grid { margin-bottom: 8px; }
.vg-head {
  display: grid;
  grid-template-columns: 1fr 1fr 32px;
  gap: 8px;
  padding: 0 4px 6px;
  font-family: 'Montserrat', sans-serif;
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--text-muted);
}
.vg-head span:last-child { text-align: center; }
.vg-rows {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 6px;
  border: 1px solid var(--border-mid);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.45);
}
.vg-row {
  display: grid;
  grid-template-columns: 1fr 1fr 32px;
  gap: 8px;
  align-items: center;
}
.vg-row input {
  width: 100%;
  padding: 7px 9px;
  border: 1px solid var(--border-mid);
  border-radius: var(--radius-sm);
  background: #fff;
  font-family: 'Roboto', sans-serif;
  font-size: 13px;
  color: var(--text-primary);
  transition: border-color var(--transition), box-shadow var(--transition);
}
.vg-row input::placeholder { color: var(--text-muted); }
.vg-row input:focus {
  outline: none;
  border-color: var(--qatch-cyan);
  box-shadow: 0 0 0 3px var(--qatch-cyan-light);
}
.vg-del {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px; height: 30px;
  border: 1px solid var(--border-mid);
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.6);
  color: var(--text-muted);
  font-size: 17px;
  line-height: 1;
  cursor: pointer;
  transition: background var(--transition), border-color var(--transition), color var(--transition);
}
.vg-del:hover { background: #fdebeb; border-color: #e69; color: #d33; }
.vg-actions {
  display: flex;
  gap: 8px;
  align-items: center;
  margin: 10px 0 12px;
  flex-wrap: wrap;
}
.vg-add {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 12px;
  border: 1px dashed var(--qatch-cyan);
  border-radius: var(--radius-sm);
  background: var(--qatch-cyan-light);
  color: var(--qatch-cyan-dark);
  font-family: 'Montserrat', sans-serif;
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.03em;
  cursor: pointer;
  transition: background var(--transition), color var(--transition), border-style var(--transition);
}
.vg-add:hover { background: var(--qatch-cyan); color: var(--text-on-cyan); border-style: solid; }
/* ════════════════════════════════════════════════════════════════
   FIT QUALITY MARKER  (sits at the top of the chart card)
   ════════════════════════════════════════════════════════════════ */
.chart-quality {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 10px;
}
.chart-quality .cq-label {
  font-family: 'Montserrat', sans-serif;
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--text-secondary);
}
.chart-quality .bh-badge {
  font-family: 'Montserrat', sans-serif;
  font-size: 9.5px; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase;
  padding: 3px 10px; border-radius: var(--radius-pill);
}

/* ════════════════════════════════════════════════════════════════
   FORCE-UNCERTAINTY CALLOUT  (band wider than the allowed limit)
   ════════════════════════════════════════════════════════════════ */
.uncertainty-warn {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin: 4px 0 16px;
  padding: 14px 16px;
  border-radius: var(--radius-md);
  background: rgba(217, 79, 79, 0.07);
  border: 1px solid rgba(217, 79, 79, 0.28);
}
.uncertainty-warn > svg { flex-shrink: 0; color: var(--danger); margin-top: 1px; }
.uncertainty-warn .uw-body { display: flex; flex-direction: column; gap: 5px; }
.uncertainty-warn .uw-title {
  font-family: 'Montserrat', sans-serif;
  font-size: 13px; font-weight: 700; color: var(--danger);
  letter-spacing: 0.01em;
}
.uncertainty-warn .uw-text {
  font-size: 12px; color: var(--text-secondary); line-height: 1.55;
}
.uncertainty-warn .uw-text b { color: var(--text-primary); font-weight: 600; }
.uncertainty-warn .uw-link {
  align-self: flex-start;
  margin-top: 4px;
  display: inline-flex; align-items: center;
  padding: 7px 14px;
  border-radius: var(--radius-pill);
  background: var(--qatch-cyan);
  color: var(--text-on-cyan);
  font-family: 'Montserrat', sans-serif;
  font-size: 12px; font-weight: 600; letter-spacing: 0.02em;
  text-decoration: none;
  transition: background var(--transition), transform var(--transition);
}
.uncertainty-warn .uw-link:hover { background: var(--qatch-cyan-dark); transform: translateY(-1px); }

/* ════════════════════════════════════════════════════════════════
   ALTERNATE "TRI-COLUMN" LAYOUT
   Activated by adding class="page-wrap layout-tricol".
   Two skinny input panels side-by-side + a wide results panel at right.
   All rules are scoped to .layout-tricol so the default page is unaffected.
   ════════════════════════════════════════════════════════════════ */
.layout-tricol .app-body {
  grid-template-columns: minmax(270px, 320px) minmax(270px, 320px) minmax(0, 1fr);
  grid-template-rows: minmax(0, 1fr);
}

/* #inputColumn stops being a box so its two tiles become direct grid
   items (columns 1 & 2); #resultsPanel takes column 3. */
.layout-tricol #inputColumn { display: contents; }

/* Each input tile now fills its column height and scrolls on its own. */
.layout-tricol .input-tile {
  display: flex;
  flex-direction: column;
  min-height: 0;
  overflow: hidden;
}
.layout-tricol .input-tile > .card-header { flex-shrink: 0; }
.layout-tricol .input-tile > .card-body {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  overflow-x: hidden;
  scroll-behavior: smooth;
}
.layout-tricol .input-tile > .card-body::-webkit-scrollbar { width: 5px; }
.layout-tricol .input-tile > .card-body::-webkit-scrollbar-track { background: transparent; }
.layout-tricol .input-tile > .card-body::-webkit-scrollbar-thumb { background: rgba(23,169,212,0.28); border-radius: 3px; }
.layout-tricol .input-tile > .card-body::-webkit-scrollbar-thumb:hover { background: rgba(23,169,212,0.45); }

/* Skinny columns: relax the 3-up button toggle so labels don't clip. */
.layout-tricol .mode-toggle.three .mode-btn { padding: 9px 6px; font-size: 11px; }
.layout-tricol .derived-grid { grid-template-columns: 1fr; }

/* Collapse to a single stacked column at the same breakpoint as the
   default layout, so the global portrait rules (which free html/body/
   page-wrap scrolling) line up with this override. */
@media (max-width: 939px) {
  .layout-tricol .app-body {
    grid-template-columns: 1fr;
    grid-template-rows: none;
    overflow: visible;
    height: auto;
    flex: none;
  }
  .layout-tricol .input-tile { overflow: visible; }
  .layout-tricol .input-tile > .card-body { overflow: visible; height: auto; }
  .layout-tricol .derived-grid { grid-template-columns: repeat(3, 1fr); }
}

/* ════════════════════════════════════════════════════════════════
   SYRINGE TILE DENSITY OVERRIDES (tri-col layout only)
   Goal: make the syringe & injection card fit without scrolling.
   ════════════════════════════════════════════════════════════════ */
.layout-tricol .input-tile .card-body {
  padding: 10px 14px;
}
.layout-tricol .input-tile .field {
  margin-bottom: 9px;
}
.layout-tricol .input-tile .field input[type="number"],
.layout-tricol .input-tile .field select {
  padding: 7px 10px;
  font-size: 13px;
}
.layout-tricol .input-tile .section-label {
  margin-bottom: 8px;
  padding-bottom: 4px;
}
.layout-tricol .input-tile .divider {
  margin: 10px 0;
}
.layout-tricol .input-tile .mode-toggle {
  margin-bottom: 10px;
}
.layout-tricol .input-tile .mode-btn {
  padding: 7px 8px;
}
.layout-tricol .input-tile .derived-grid {
  grid-template-columns: repeat(3, 1fr);   /* horizontal again — saves vertical space */
  gap: 5px;
  margin-bottom: 0;
}
.layout-tricol .input-tile .derived-chip {
  padding: 5px 8px;
}
.layout-tricol .input-tile .derived-chip .d-label {
  font-size: 9px;
}
.layout-tricol .input-tile .derived-chip .d-val {
  font-size: 12px;
}
.layout-tricol .input-tile .data-hint {
  font-size: 10.5px;
  margin-top: 4px;
}
/* Needle-type mini-toggle: compact, no bottom gap */
.needle-type-toggle {
  margin-bottom: 6px !important;
}
.needle-type-toggle .mode-btn {
  padding: 5px 8px !important;
  font-size: 11px !important;
}

/* Inline field hint (e.g. valid range below needle input) */
.field-hint {
  display: block;
  font-size: 10px;
  color: var(--text-muted);
  margin-top: 4px;
  font-family: 'Roboto', sans-serif;
  letter-spacing: 0.02em;
}

/* Red border state for out-of-range inputs */
.field input.field-invalid {
  border-color: var(--danger) !important;
  background: rgba(217, 79, 79, 0.04) !important;
  box-shadow: 0 0 0 3px rgba(217, 79, 79, 0.10) !important;
}


/* ════════════════════════════════════════════════════════════════
   VISCOSITY TILE — fill-then-scroll flex chain
   card-body → #customInputs → .visc-grid → .vg-rows
   The rows box grows to fill the panel; scrolls only when full.
   Scoped to #viscTile so the syringe tile is unaffected.
   ════════════════════════════════════════════════════════════════ */

/* Step 1: viscosity card-body becomes a non-scrolling flex column */
.layout-tricol #viscTile > .card-body {
  display: flex;
  flex-direction: column;
  overflow: hidden;       /* overrides overflow-y: auto from the base tricol rule */
}

/* Step 2: custom-inputs section fills remaining space */
.layout-tricol #viscTile #customInputs {
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

/* Step 3: visc-grid fills space inside custom-inputs */
.layout-tricol #viscTile .visc-grid {
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
  margin-bottom: 0;
}

/* Step 4: vg-rows is the scroll container — fills all remaining height */
.layout-tricol #viscTile .vg-rows {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
}

.vg-clear {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 12px;
  border: 1px dashed rgba(217,79,79,0.45);
  border-radius: var(--radius-sm);
  background: rgba(217,79,79,0.05);
  color: var(--danger);
  font-family: 'Montserrat', sans-serif;
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.03em;
  cursor: pointer;
  transition: background var(--transition), color var(--transition), border-style var(--transition);
}
.vg-clear:hover { background: var(--danger); color: #fff; border-style: solid; }