/* ==========================================================
   Wicflow — ROI Calculator
   Styles aligned with wicflow.com brand system
   ========================================================== */

/* ----------------------------------------------------------
   1. Variables
   ---------------------------------------------------------- */
:root {
  /* Colors — matched to wicflow.com base.css */
  --bg-body:        #f7f7f5;
  --bg-card:        #ffffff;
  --bg-alt:         #eeeee9;
  --text-main:      #111113;
  --text-muted:     #4f5763;
  --text-light:     #8a8f99;
  --border:         rgba(0, 0, 0, 0.08);
  --border-focus:   #111113;

  /* Semantic states */
  --success:        #1a7a4a;
  --success-light:  #d6f0e0;
  --success-text:   #0d4a28;
  --warning:        #b87333;
  --warning-light:  #f5e6d0;
  --warning-text:   #7a4a1a;
  --danger:         #c0392b;
  --danger-light:   #f5d5d0;
  --danger-text:    #7a1a14;

  /* Shadows — matched to wicflow.com card shadows */
  --shadow-sm:  0 1px 3px rgba(0, 0, 0, 0.04);
  --shadow-md:  0 4px 12px rgba(0, 0, 0, 0.06);
  --shadow-lg:  0 8px 24px rgba(0, 0, 0, 0.08);
  --shadow-tooltip: 0 8px 20px rgba(0, 0, 0, 0.15);

  /* Radii */
  --radius-sm:  0.25rem;   /*  4px */
  --radius-md:  0.5rem;    /*  8px */
  --radius-lg:  0.75rem;   /* 12px — matches website card radius */
  --radius-xl:  0.75rem;   /* 12px */
  --radius-pill: 2rem;     /* matches wicflow pill buttons */

  /* Typography — matched to wicflow.com */
  --font-display: 'Instrument Serif', Georgia, serif;
  --font-body:    'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;

  /* Transitions */
  --ease-out: cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --transition-fast: 0.2s var(--ease-out);
}

/* ----------------------------------------------------------
   2. Reset & Base
   ---------------------------------------------------------- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  background-color: var(--bg-body);
  color: var(--text-main);
  line-height: 1.5;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ----------------------------------------------------------
   3. Page switching
   ---------------------------------------------------------- */
.page {
  display: none;
}

.page.active {
  display: flex;
  flex-direction: column;
}

/* ----------------------------------------------------------
   4. Header
   ---------------------------------------------------------- */
header {
  background-color: var(--bg-card);
  border-bottom: 1px solid var(--border);
  padding: 1rem 2rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  position: sticky;
  top: 0;
  z-index: 20;
}

/* Logo — italic serif, matching wicflow.com nav logo style */
.brand {
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 400;
  font-size: 1.5rem;
  color: var(--text-main);
  letter-spacing: -0.04em;
  line-height: 1;
}

.header-divider {
  width: 1px;
  height: 1.25rem;
  background-color: var(--border);
}

.header-title {
  font-size: 0.8125rem;
  color: var(--text-muted);
  font-weight: 400;
  flex: 1;
  letter-spacing: 0.01em;
}

/* Header controls group (lang + currency) */
.header-controls {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-left: auto;
}

/* Currency select */
.currency-select {
  background: var(--bg-body);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.375rem 0.5rem;
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-main);
  cursor: pointer;
  outline: none;
  transition: border-color var(--transition-fast);
}

.currency-select:focus {
  border-color: var(--border-focus);
}

/* Language toggle — matches wicflow.com .lang segmented control */
.lang-toggle {
  display: inline-flex;
  align-items: center;
  gap: 2px;
  padding: 3px;
  background: rgba(17, 17, 19, 0.035);
  border: 1px solid rgba(17, 17, 19, 0.10);
  border-radius: var(--radius-pill);
}

.lang-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 2.5rem;
  padding: 0.3rem 0.6rem;
  border-radius: var(--radius-pill);
  font-family: var(--font-body);
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--text-main);
  background: none;
  border: none;
  cursor: pointer;
  opacity: 0.6;
  transition: opacity var(--transition-fast), background var(--transition-fast), box-shadow var(--transition-fast);
}

.lang-btn:hover { opacity: 0.9; }

.lang-btn.active {
  background: var(--bg-card);
  opacity: 1;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.08), 0 0 0 1px rgba(0, 0, 0, 0.03);
}

/* ----------------------------------------------------------
   5. Layout
   ---------------------------------------------------------- */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2.5rem 1.5rem;
  flex: 1;
  width: 100%;
}

/* Two-column grid for input + results */
.calc-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  align-items: start;
  width: 100%;
}

@media (min-width: 1024px) {
  .calc-grid {
    grid-template-columns: 1.2fr 1fr;
  }
}

/* ----------------------------------------------------------
   6. Page headers
   ---------------------------------------------------------- */
.page-header {
  margin-bottom: 2rem;
  text-align: center;
}

.page-header h1 {
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 400;
  letter-spacing: -0.02em;
  margin-bottom: 0.5rem;
}

.page-header p {
  color: var(--text-muted);
  font-size: 1.0625rem;
}

/* ----------------------------------------------------------
   7. Landing page
   ---------------------------------------------------------- */
.landing-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 3rem;
  min-height: 70vh;
  padding: 2rem 0;
}

.landing-hero {
  text-align: center;
  max-width: 680px;
}

.landing-hero h1 {
  font-family: var(--font-display);
  font-size: 3rem;
  font-weight: 400;
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
}

.landing-hero p {
  font-size: 1.125rem;
  color: var(--text-muted);
  line-height: 1.6;
}

.calc-choices {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  width: 100%;
  max-width: 860px;
}

.calc-card {
  padding: 2.5rem 2rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all 0.3s var(--ease-out);
  text-align: center;
  text-decoration: none;
  color: var(--text-main);
  box-shadow: var(--shadow-sm);
  /* Reset button styles */
  font-family: var(--font-body);
  width: 100%;
}

.calc-card:hover {
  border-color: rgba(17, 17, 19, 0.28);
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.calc-card-icon {
  font-size: 2.5rem;
  margin-bottom: 1rem;
  display: block;
}

.calc-card h2 {
  font-size: 1.375rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
}

.calc-card p {
  font-size: 0.9375rem;
  color: var(--text-muted);
  line-height: 1.5;
  max-width: none;
}

/* ----------------------------------------------------------
   8. Cards
   ---------------------------------------------------------- */
.card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
  padding: 2rem;
  margin-bottom: 1.5rem;
}

.card:last-child {
  margin-bottom: 0;
}

.card-header {
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.card-title {
  font-size: 1.0625rem;
  font-weight: 600;
}

/* ----------------------------------------------------------
   9. Form inputs
   ---------------------------------------------------------- */
.input-group {
  margin-bottom: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.input-group:last-child {
  margin-bottom: 0;
}

.label-row {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: 0.75rem;
}

.label-wrap {
  display: flex;
  align-items: center;
  gap: 0.375rem;
}

.label {
  font-size: 0.875rem;
  font-weight: 500;
}

.unit {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* Text input */
.text-input {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--text-main);
  background-color: var(--bg-body);
  outline: none;
  transition: border-color var(--transition-fast), background-color var(--transition-fast), box-shadow var(--transition-fast);
}

.text-input:focus {
  border-color: var(--border-focus);
  background-color: var(--bg-card);
  box-shadow: 0 0 0 3px rgba(17, 17, 19, 0.07);
}

/* Number input with prefix (€/$) */
.num-input-wrap {
  display: flex;
  align-items: center;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background-color: var(--bg-body);
  overflow: hidden;
  transition: border-color var(--transition-fast), background-color var(--transition-fast), box-shadow var(--transition-fast);
}

.num-input-wrap:focus-within {
  border-color: var(--border-focus);
  background-color: var(--bg-card);
  box-shadow: 0 0 0 3px rgba(17, 17, 19, 0.07);
}

.input-prefix {
  padding: 0.75rem 0.5rem 0.75rem 1rem;
  color: var(--text-muted);
  font-size: 1rem;
  background: transparent;
  user-select: none;
}

/* JS hook — queried by app.js to update all currency symbols on currency change */
.curr-sym { /* inherits from .input-prefix */ }

.num-input {
  flex: 1;
  padding: 0.75rem 1rem 0.75rem 0.25rem;
  border: none;
  background: transparent;
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--text-main);
  outline: none;
  font-variant-numeric: tabular-nums;
}

/* Employer cost inline row */
.employer-cost-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: -0.5rem;
  margin-bottom: 1.5rem;
  padding: 0.5rem 0.75rem;
  background: var(--bg-body);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
}

.employer-cost-row .label-sm {
  font-size: 0.8125rem;
  color: var(--text-muted);
  font-weight: 400;
  flex: 1;
}

.ecost-input {
  width: 60px;
  padding: 0.2rem 0.5rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-size: 0.8125rem;
  font-weight: 500;
  text-align: right;
  outline: none;
  color: var(--text-main);
  background: white;
  transition: border-color var(--transition-fast);
}

.ecost-input:focus {
  border-color: var(--border-focus);
}

.unit-sm {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* ----------------------------------------------------------
   10. Range slider
   ---------------------------------------------------------- */
.slider-row {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.slider-track {
  flex: 1;
  display: flex;
  align-items: center;
  height: 24px;
}

input[type="range"] {
  -webkit-appearance: none;
  width: 100%;
  height: 6px;
  border-radius: 3px;
  background: var(--border);
  outline: none;
  cursor: pointer;
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--bg-card);
  border: 2px solid var(--text-main);
  cursor: grab;
  box-shadow: var(--shadow-sm);
  transition: transform 0.1s var(--ease-out);
}

input[type="range"]:hover::-webkit-slider-thumb {
  transform: scale(1.1);
}

input[type="range"]:active::-webkit-slider-thumb {
  cursor: grabbing;
  box-shadow: 0 0 0 4px rgba(17, 17, 19, 0.08);
}

input[type="range"]::-moz-range-thumb {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--bg-card);
  border: 2px solid var(--text-main);
  cursor: grab;
}

.slider-value-input {
  width: 80px;
  padding: 0.375rem 0.5rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-main);
  text-align: right;
  outline: none;
  font-variant-numeric: tabular-nums;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.slider-value-input:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 2px rgba(17, 17, 19, 0.07);
}

/* ----------------------------------------------------------
   11. Tooltips (pure CSS, no JS)
   ---------------------------------------------------------- */
.tooltip-icon {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--bg-alt);
  color: var(--text-muted);
  font-size: 0.625rem;
  font-weight: 700;
  cursor: help;
  transition: background var(--transition-fast), color var(--transition-fast);
}

.tooltip-icon:hover {
  background: var(--text-muted);
  color: white;
}

/* Tooltip bubble */
.tooltip-icon::before {
  content: attr(data-tooltip);
  position: absolute;
  bottom: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%) translateY(5px);
  width: max-content;
  max-width: 220px;
  padding: 0.625rem 0.75rem;
  background: var(--text-main);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 400;
  line-height: 1.4;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-tooltip);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.15s ease, transform 0.15s ease;
  z-index: 100;
  text-align: left;
  pointer-events: none;
  /* Reset font variant for tooltip text */
  font-family: var(--font-body);
  font-variant-numeric: normal;
}

/* Tooltip arrow */
.tooltip-icon::after {
  content: '';
  position: absolute;
  bottom: calc(100% + 2px);
  left: 50%;
  transform: translateX(-50%) translateY(5px);
  border: 6px solid transparent;
  border-top-color: var(--text-main);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.15s ease, transform 0.15s ease;
  z-index: 100;
  pointer-events: none;
}

.tooltip-icon:hover::before,
.tooltip-icon:hover::after {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

/* Left-anchored variant — opens rightward from the icon's right edge */
.tooltip-left::before {
  left: auto;
  right: 0;
  transform: translateX(0) translateY(5px);
  max-width: 260px;
}

.tooltip-left::after {
  left: auto;
  right: 4px;
  transform: translateX(0) translateY(5px);
}

.tooltip-left:hover::before,
.tooltip-left:hover::after {
  transform: translateX(0) translateY(0);
}

/* ----------------------------------------------------------
   12. Results panel
   ---------------------------------------------------------- */
.input-panel {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.results-panel {
  position: sticky;
  top: 6rem;
  display: flex;
  flex-direction: column;
}

/* Status pill */
.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.375rem 0.75rem;
  border-radius: var(--radius-pill);
  font-size: 0.75rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
  transition: background-color 0.3s ease, color 0.3s ease;
}

.status-pill.success {
  background-color: var(--success-light);
  color: var(--success-text);
}

.status-pill.warning {
  background-color: var(--warning-light);
  color: var(--warning-text);
}

.status-pill.danger {
  background-color: var(--danger-light);
  color: var(--danger-text);
}

.pulse-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: currentColor;
}

.pulse-dot.anim {
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%   { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.4); }
  70%  { box-shadow: 0 0 0 6px rgba(16, 185, 129, 0); }
  100% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
}

/* Primary metric */
.metric-main {
  margin-bottom: 1.5rem;
}

.metric-label {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 0.5rem;
}

.metric-value {
  font-size: 3.25rem;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.04em;
  font-variant-numeric: tabular-nums;
  transition: color 0.3s ease;
}

.metric-sub {
  font-size: 0.875rem;
  color: var(--text-light);
  margin-top: 0.5rem;
}

/* ROI bar chart */
.roi-chart {
  margin-bottom: 2rem;
  padding: 1.25rem;
  background: var(--bg-body);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
}

.roi-chart-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 0.75rem;
}

.roi-chart-label {
  font-size: 0.875rem;
  font-weight: 600;
}

.roi-chart-value {
  font-size: 1.125rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.01em;
  color: var(--success);
  transition: color 0.3s ease;
}

.roi-chart-value.warn { color: var(--warning); }
.roi-chart-value.neg  { color: var(--danger); }

.roi-bar-track {
  height: 14px;
  background: var(--border);
  border-radius: 7px;
  position: relative;
  margin-bottom: 0.625rem;
  box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.04);
}

.roi-bar-fill {
  height: 100%;
  border-radius: 7px;
  width: 0%;
  position: relative;
  transition: width 0.2s cubic-bezier(0.4, 0, 0.2, 1), background-color 0.3s ease;
}

/* Glow on positive ROI */
.roi-bar-fill::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 7px;
  box-shadow: 0 0 10px rgba(16, 185, 129, 0.35);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.roi-bar-fill.active::after {
  opacity: 1;
}

/* Secondary metrics 2×2 grid */
.section-divider {
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin: 0 0 0.75rem;
}

.metrics-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-bottom: 1.75rem;
}

.metric-box {
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border);
}

.mbox-label {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.025em;
  margin-bottom: 0.25rem;
}

.mbox-value {
  font-size: 1.5rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

.mbox-value.pos  { color: var(--success); }
.mbox-value.neg  { color: var(--danger); }
.mbox-value.warn { color: var(--warning); }

/* Breakdown list */
.breakdown {
  padding-top: 0.5rem;
  margin-bottom: 1.5rem;
}

.breakdown-title {
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: 1rem;
}

.breakdown-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.5rem 0;
  font-size: 0.875rem;
  border-bottom: 1px solid var(--border);
}

.breakdown-row:last-child {
  border-bottom: none;
}

.breakdown-label {
  color: var(--text-muted);
  font-weight: 500;
}

.breakdown-value {
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}

.breakdown-value.pos { color: var(--success); }
.breakdown-value.neg { color: var(--danger); }

/* ----------------------------------------------------------
   13. Buttons
   ---------------------------------------------------------- */

/* Three-column action row at the bottom of results */
.actions-row {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 0.5rem;
  margin-top: 1.25rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border);
}

.btn-action {
  width: 100%;
  padding: 0.75rem 1rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  color: var(--text-main);
  font-family: var(--font-body);
  font-size: 0.8125rem;
  font-weight: 500;
  cursor: pointer;
  transition: background-color var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.375rem;
}

.btn-action:hover {
  background-color: var(--text-main);
  color: white;
  border-color: var(--text-main);
}

.btn-action:active {
  transform: scale(0.97);
}

.btn-action.btn-primary {
  background-color: var(--text-main);
  color: white;
  border-color: var(--text-main);
}

.btn-action.btn-primary:hover {
  background-color: #2a2a2c;
  border-color: #2a2a2c;
}

.btn-action.btn-copy.copied {
  background-color: var(--success-light);
  color: var(--success-text);
  border-color: var(--success);
}

/* JS hook — queried by app.js to swap copy button text without touching innerHTML */
.btn-label { /* inherits from .btn-action */ }

/* Book a call — full-width pill button inside card */
.btn-discovery {
  display: block;
  width: 100%;
  padding: 0.875rem 1.5rem;
  margin-top: 1.5rem;
  background-color: var(--text-main);
  color: white;
  text-decoration: none;
  text-align: center;
  border-radius: var(--radius-pill);
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  transition: background-color var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
}

.btn-discovery:hover {
  background-color: #2a2a2c;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

/* ----------------------------------------------------------
   14. Discovery footer band
   ---------------------------------------------------------- */
.discovery-footer {
  margin-top: 4rem;
  padding: 3rem 1.5rem;
  background-color: var(--text-main);
  color: white;
  text-align: center;
}

.discovery-footer h2 {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 400;
  letter-spacing: -0.01em;
  margin-bottom: 1rem;
}

.discovery-footer p {
  font-size: 1rem;
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 1.75rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.btn-discovery-footer {
  display: inline-block;
  padding: 0.875rem 2rem;
  background-color: white;
  color: var(--text-main);
  text-decoration: none;
  border-radius: var(--radius-pill);
  font-family: var(--font-body);
  font-size: 0.9375rem;
  font-weight: 600;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.btn-discovery-footer:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.25);
}

/* ----------------------------------------------------------
   15. Calculator navigation (back + switcher)
   ---------------------------------------------------------- */
.calc-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 2rem;
  gap: 1rem;
}

.btn-back {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.625rem 1rem;
  background: var(--bg-body);
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  color: var(--text-main);
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: background-color var(--transition-fast), border-color var(--transition-fast);
  text-decoration: none;
}

.btn-back:hover {
  background: var(--bg-card);
  border-color: var(--text-main);
}

.calc-switcher {
  display: flex;
  gap: 0.5rem;
  align-items: center;
  margin-left: auto;
}

.switch-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.btn-switch {
  padding: 0.625rem 1rem;
  background: var(--bg-body);
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  color: var(--text-muted);
  font-family: var(--font-body);
  font-size: 0.8125rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
}

.btn-switch:hover {
  background: var(--bg-card);
  color: var(--text-main);
  border-color: var(--text-main);
}

/* ----------------------------------------------------------
   16. Miscellaneous
   ---------------------------------------------------------- */
.note {
  font-size: 0.75rem;
  color: var(--text-light);
  text-align: center;
  margin-top: 1rem;
}

/* ----------------------------------------------------------
   17. Animations
   ---------------------------------------------------------- */
.fade-in {
  animation: fadeIn 0.4s var(--ease-out) forwards;
}

.delay-1 { animation-delay: 0.1s; }
.delay-2 { animation-delay: 0.2s; }

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* Fast highlight flash when a value updates */
.value-update {
  animation: highlight 0.2s var(--ease-out);
}

@keyframes highlight {
  0%   { transform: scale(1.02); }
  100% { transform: scale(1); }
}

/* ----------------------------------------------------------
   18. PDF export mode
   Toggled by adding .pdf-export to <body> before html2pdf runs.
   ---------------------------------------------------------- */
.pdf-export * {
  animation: none !important;
  transition: none !important;
}

.pdf-export {
  overflow: visible !important;
}

/* Hide UI chrome that doesn't belong in the PDF */
.pdf-export .calc-nav,
.pdf-export .discovery-footer,
.pdf-export .actions-row,
.pdf-export .btn-discovery,
.pdf-export .tooltip-icon {
  display: none !important;
}

.pdf-export .container {
  max-width: 1120px !important;
  padding: 1.5rem !important;
}

.pdf-export .page-header {
  margin-bottom: 1.25rem !important;
}

.pdf-export .page-header h1 {
  font-size: 1.75rem !important;
}

.pdf-export .calc-grid {
  grid-template-columns: 1.2fr 1fr !important;
  gap: 1.5rem !important;
}

.pdf-export .input-panel {
  gap: 1rem !important;
}

.pdf-export .results-panel {
  position: static !important;
}

.pdf-export .card {
  padding: 1rem !important;
  margin-bottom: 1rem !important;
}

.pdf-export .card-header {
  margin-bottom: 0.75rem !important;
}

.pdf-export .input-group {
  margin-bottom: 0.875rem !important;
}

.pdf-export .label-row {
  margin-bottom: 0.375rem !important;
}

.pdf-export .status-pill {
  margin-bottom: 0.875rem !important;
  font-size: 0.6875rem;
}

.pdf-export .metric-main {
  margin-bottom: 1rem !important;
}

.pdf-export .metric-value {
  font-size: 1.875rem !important;
}

.pdf-export .roi-chart {
  margin-bottom: 1rem !important;
}

.pdf-export .metrics-grid {
  gap: 0.75rem !important;
  margin-bottom: 1rem !important;
}

.pdf-export .mbox-value {
  font-size: 1rem !important;
}

/* ----------------------------------------------------------
   19. Responsive
   ---------------------------------------------------------- */
@media (max-width: 1023px) {
  .results-panel {
    position: static;
  }
}

@media (max-width: 992px) {
  .calc-choices {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .container {
    padding: 2rem 1rem;
  }

  .page-header h1 {
    font-size: 1.875rem;
  }

  .calc-grid {
    gap: 1.5rem;
  }
}

@media (max-width: 600px) {
  .container {
    padding: 1.5rem 1rem;
  }

  .card {
    padding: 1.5rem;
  }

  .metrics-grid {
    grid-template-columns: 1fr;
  }

  .metric-value {
    font-size: 2.75rem;
  }

  .actions-row {
    grid-template-columns: 1fr;
  }

  .landing-hero h1 {
    font-size: 2rem;
  }

  .calc-nav {
    flex-wrap: wrap;
  }

  .calc-switcher {
    width: 100%;
    margin-left: 0;
    justify-content: space-between;
  }

  .discovery-footer h2 {
    font-size: 1.5rem;
  }
}

/* Respect user preference for reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}