:root {
      --bg-canvas: #f1f5f9; /* Darker, premium cool-grey background for depth */
      --card-bg: #ffffff;   /* Pure white for the calculator card surface */
      --text-main: #0f172a;
      --text-secondary: #64748b;
      --accent-blue: #0066cc;
      --premium-green: #00875a;
      --midnight-navy: #0a2540;
      --border-color: #e2e8f0;
      --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    }

    /* GLOBAL CANVAS RESET */
    html, body {
      width: 100% !important;
      max-width: 100% !important;
      margin: 0 !important;
      box-sizing: border-box;
      -webkit-text-size-adjust: 100%;
    }

    html {
      font-size: 16px;
    }

    body {
      background-color: var(--bg-canvas); /* Applies the premium grey canvas globally */
      color: var(--text-main);
      font-family: var(--font-stack);
      -webkit-font-smoothing: antialiased;
      overflow-y: auto !important;
      
      /* This adds the small padding/gap around the canvas on mobile screens */
      padding: 16px 12px 60px 12px !important; 
    }
/* FEEDBACK UI - The new compact card */
/* Feedback Wrapper - Styled to match the primary app-container card */
.feedback-control-wrapper {
  box-sizing: border-box;
  width: 100% !important;
  max-width: 500px !important; /* Matches your main container */
  margin: 20px auto !important; /* The 'auto' keeps it centered */
  padding: 20px !important;
  background-color: var(--card-bg);
  border: 1px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 4px 20px rgba(10, 37, 64, 0.05) !important;
}

/* Ensure the toggle and text inside look clean */
.feedback-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 15px;
  margin-bottom: 12px;
}

.feedback-title { 
  margin: 0; 
  font-size: 1rem; 
  color: var(--midnight-navy); 
  font-weight: 700; 
}

.feedback-instructions { 
  margin: 0; 
  font-size: 0.85rem; 
  color: var(--text-secondary); 
  line-height: 1.5; 
}
.v2-promo-banner {
  background: linear-gradient(135deg, #0a2540 0%, #0066cc 100%);
  color: white;
  padding: 15px;
  width: 100% !important;
  border-radius: 10px; 
  
  /* Centers the block container horizontally inside its parent */
  margin: 0 auto 20px auto; 
  max-width: 500px !important; /* Matches your main container */
  
  /* Centers the text content and inline items inside the banner */
  text-align: center; 
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
  font-family: -apple-system, sans-serif;
  box-sizing: border-box; /* Ensures padding doesn't stretch past 500px */
}

.v2-promo-banner a {
  background-color: #00875a;
  color: white;
  padding: 8px 16px;
  text-decoration: none;
  border-radius: 6px;
  font-weight: bold;
  display: inline-block;
  margin-top: 10px;
  transition: opacity 0.2s;
  
  /* Removed width constraints here so the button hugs its text naturally instead of expanding to 500px */
}

.v2-promo-banner a:hover { 
  opacity: 0.9; 
}
    /* THE PREMIUM MOBILE CARD STRUCTURE */
    .app-container {
      box-sizing: border-box;
      width: 100% !important;
      max-width: 100% !important;
      margin: 0 auto !important;
      
      /* Internal padding inside the white card */
      padding: 24px 16px !important; 
      
      background-color: var(--card-bg);
      position: relative !important;
      display: block !important;
      
      /* Card Layout Styling for Mobile */
      border: 1px solid var(--border-color) !important;
      border-radius: 20px !important; /* Elegant rounded card edges */
      box-shadow: 0 4px 20px rgba(10, 37, 64, 0.05) !important; /* Soft premium shadow */
    }

    /* DESKTOP RESPONSIVE LAYER - Scales elegantly up for large computer monitors */
    @media (min-width: 600px) {
      html {
        font-size: 17px;
      }
      body {
        padding: 40px 0 !important; /* Extra top/bottom breathing room on desktop */
      }
      .app-container {
        max-width: 500px !important; /* Hard constraint to keep UI crisp on desktop */
        border-radius: 24px !important;
        box-shadow: 0 10px 40px rgba(10, 37, 64, 0.08) !important; /* Slightly deeper shadow for desktop */
      }
    }

    /* Typographic Refinements configured for pure mobile visibility */
    header { 
      text-align: center; 
      margin-bottom: 1.75rem; 
    }
    header h1 { 
      font-size: 1.8rem; 
      font-weight: 800; 
      color: var(--midnight-navy); 
      letter-spacing: -0.5px; 
      margin-bottom: 0.5rem; 
    }
    header p { 
      font-size: 0.95rem; 
      color: var(--text-secondary); 
      line-height: 1.4;
    }

    /* Premium High-Contrast Hero Scoreboard Container */
    .hero-savings {
      background: linear-gradient(135deg, var(--midnight-navy) 0%, #1e3a5f 100%);
      color: #ffffff;
      text-align: center;
      padding: 2rem 1.25rem;
      border-radius: 20px;
      margin-bottom: 1.5rem;
      box-shadow: 0 6px 20px rgba(10, 37, 64, 0.1);
    }
    .hero-savings .label { 
      font-size: 0.85rem; 
      font-weight: 700; 
      color: #cbd5e1; 
      text-transform: uppercase; 
      letter-spacing: 1.2px; 
    }
    .hero-savings .amount { 
      font-size: 3.25rem; 
      font-weight: 800; 
      color: #ffffff; 
      letter-spacing: -1px; 
      margin: 0.4rem 0; 
    }
    .hero-savings .sub-label { 
      font-size: 1rem; 
      color: #94a3b8; 
      font-weight: 500; 
    }
    .hero-savings .sub-label span { 
      color: #4ade80; 
      font-weight: 700; 
    }

    .linear-breakdown {
      background-color: #f8fafc; /* Lighter background inside card elements */
      border-radius: 18px;
      padding: 1.25rem;
      border: 1px solid #e2e8f0;
      margin-bottom: 1.75rem;
    }
    .breakdown-row {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 0.85rem 0;
      border-bottom: 1px solid #e2e8f0;
    }
    .breakdown-row:last-child { border-bottom: none; padding-bottom: 0; }
    .breakdown-row:first-child { padding-top: 0; }
    .breakdown-row .row-title { font-size: 0.85rem; font-weight: 700; color: var(--text-secondary); text-transform: uppercase; letter-spacing: 0.3px; }
    .breakdown-row .row-val { font-size: 1.15rem; font-weight: 800; color: var(--premium-green); }

    .section-title { font-size: 1.1rem; font-weight: 700; margin: 1.75rem 0 0.75rem 0; color: var(--midnight-navy); letter-spacing: -0.2px; display: flex; align-items: center; gap: 6px;}
    label { display: block; font-size: 0.85rem; font-weight: 700; color: #475569; margin-bottom: 0.5rem; text-transform: uppercase; letter-spacing: 0.3px; }
    
    /* Inputs formatted cleanly for mobile tap interfaces */
    select, input[type="number"] {
      width: 100%;
      background-color: #f8fafc;
      border: 1px solid #cbd5e1;
      color: var(--text-main);
      border-radius: 14px;
      padding: 0.85rem; 
      font-size: 1rem; 
      font-family: var(--font-stack);
      margin-bottom: 1.25rem;
      outline: none;
      box-sizing: border-box;
      -webkit-appearance: none;
    }
    select:focus, input:focus {
      background-color: #ffffff;
      border-color: var(--accent-blue);
      box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.1);
    }

    .form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0.75rem; }

    .segmented-control {
      display: flex;
      background-color: #e2e8f0;
      padding: 4px;
      border-radius: 14px;
      margin-bottom: 1.25rem;
    }
    .segmented-control input { display: none; }
    .segmented-control label {
      flex: 1;
      text-align: center;
      padding: 0.75rem 0.25rem;
      margin-bottom: 0;
      border-radius: 10px;
      font-size: 0.88rem;
      font-weight: 700;
      color: #475569;
      cursor: pointer;
      text-transform: none;
      letter-spacing: 0;
    }
    .segmented-control input:checked + label {
      background-color: var(--accent-blue);
      color: #ffffff;
      box-shadow: 0 4px 10px rgba(0, 102, 204, 0.15);
    }

    input[type="range"] { -webkit-appearance: none; width: 100%; margin-bottom: 1.5rem; background: transparent; display: block; }
    input[type="range"]:focus { outline: none; }
    input[type="range"]::-webkit-slider-runnable-track { width: 100%; height: 8px; background: #cbd5e1; border-radius: 4px; }
    input[type="range"]::-webkit-slider-thumb {
      height: 26px; width: 26px; border-radius: 50%; background: var(--accent-blue);
      box-shadow: 0 2px 6px rgba(0,102,204,0.3); cursor: pointer; -webkit-appearance: none; margin-top: -9px;
    }

    .exchange-toggle-container {
      background-color: #f8fafc;
      border: 1px dashed #cbd5e1;
      padding: 1rem;
      border-radius: 14px;
      margin-bottom: 1.25rem;
      display: flex;
      align-items: center;
      cursor: pointer;
    }
    .exchange-toggle-container input { width: 22px; height: 22px; margin-right: 12px; cursor: pointer; flex-shrink: 0; }
    .exchange-toggle-container span { font-size: 0.9rem; font-weight: 700; color: var(--midnight-navy); line-height: 1.3; }

    .narrative-card {
      background: linear-gradient(180deg, #f8fafc 0%, #f1f5f9 100%);
      border-left: 4px solid var(--accent-blue);
      border-radius: 0 16px 16px 0;
      padding: 1.25rem;
      font-size: 1rem;
      line-height: 1.55;
      color: var(--text-main);
      margin-top: 1.25rem;
      border-top: 1px solid #e2e8f0;
      border-bottom: 1px solid #e2e8f0;
      border-right: 1px solid #e2e8f0;
    }
    .narrative-card strong { font-weight: 700; color: var(--accent-blue); }

    .breakeven-badge {
      display: inline-block;
      padding: 0.4rem 0.75rem;
      border-radius: 8px;
      font-size: 0.8rem;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 0.5px;
      margin-top: 0.75rem;
    }
    .badge-success { background-color: #e6f4ea; color: var(--premium-green); }
    .badge-alert { background-color: #e8f0fe; color: var(--accent-blue); }

    .fallback-toggle-link {
      font-size: 0.85rem;
      font-weight: 700;
      color: var(--accent-blue);
      text-decoration: underline;
      cursor: pointer;
      display: inline-block;
      margin-bottom: 1rem;
    }

    .pdf-btn-container { margin-top: 2rem; text-align: center; }
    .pdf-download-btn {
      width: 100%;
      background-color: var(--midnight-navy);
      color: #ffffff;
      border: none;
      padding: 1rem;
      border-radius: 14px;
      font-size: 1rem;
      font-weight: 700;
      cursor: pointer;
    }

    /* FEEDBACK MODE BAR AND INTERFACES */
    .feedback-control-panel {
      background: #fffbeb;
      border: 1px solid #fef3c7;
      padding: 12px 16px;
      border-radius: 14px;
      margin-bottom: 1.5rem;
      display: flex;
      justify-content: space-between;
      align-items: center;
      box-shadow: 0 2px 8px rgba(217, 119, 6, 0.05);
    }
    .feedback-status-title {
      font-size: 0.9rem;
      font-weight: 700;
      color: #b45309;
    }
    .feedback-toggle-action-btn {
      background-color: #d97706;
      color: #ffffff;
      border: none;
      padding: 6px 14px;
      border-radius: 8px;
      font-size: 0.82rem;
      font-weight: 700;
      cursor: pointer;
      transition: background-color 0.2s;
    }
    .feedback-toggle-action-btn.active {
      background-color: #dc2626;
    }
/* Container for the switch */
.switch-container {
  display: flex;
  align-items: center;
  gap: 10px;
}

/* The actual toggle switch */
.switch {
  position: relative;
  display: inline-block;
  width: 50px;
  height: 26px;
}

.switch input { opacity: 0; width: 0; height: 0; }

.slider {
  position: absolute;
  cursor: pointer;
  top: 0; left: 0; right: 0; bottom: 0;
  background-color: #cbd5e1;
  transition: .4s;
  border-radius: 26px;
}

.slider:before {
  position: absolute;
  content: "";
  height: 20px;
  width: 20px;
  left: 3px;
  bottom: 3px;
  background-color: white;
  transition: .4s;
  border-radius: 50%;
}

input:checked + .slider { background-color: var(--accent-blue); }
input:checked + .slider:before { transform: translateX(24px); }
    /* The visual style for user layout flags */
    .feedback-dot {
      position: absolute;
      width: 12px;
      height: 12px;
      background-color: #ef4444; /* Vivid Red */
      border: 2px solid #ffffff; /* Sharp white border to pop out against inputs */
      border-radius: 50%;
      box-shadow: 0 2px 8px rgba(239, 68, 68, 0.5);
      transform: translate(-50%, -50%); /* Centers the pinpoint exactly over the tap */
      z-index: 9999;
      pointer-events: none; /* Allows users to still tap inputs beneath them */
      animation: pulsePin 1.5s infinite;
    }

    @keyframes pulsePin {
      0% { box-shadow: 0 0 0 0 rgba(239, 68, 68, 0.7); }
      70% { box-shadow: 0 0 0 6px rgba(239, 68, 68, 0); }
      100% { box-shadow: 0 0 0 0 rgba(239, 68, 68, 0); }
    }
    .disclaimer-section { margin-top: 2.5rem; padding-top: 1.5rem; border-top: 1px solid var(--border-color); }
    .disclaimer-section h4 { font-size: 0.85rem; font-weight: 700; color: var(--text-main); text-transform: uppercase; letter-spacing: 0.5px; margin-bottom: 0.5rem; }
    .disclaimer-section p, .disclaimer-section li { font-size: 0.8rem; color: var(--text-secondary); line-height: 1.5; margin-bottom: 0.5rem; }
    .disclaimer-section ul { padding-left: 1.1rem; }

    .hidden { display: none !important; }
    .accordion-link { color: var(--text-secondary); font-size: 0.85rem; font-weight: 700; text-decoration: none; display: block; margin-top: 1.5rem; cursor: pointer; text-align: center;}