/* --- 1. VARIABLES & THEME (Matched to Reference) --- */
    #mtpc_calculator_wrapper {
      --primary-color: #0B1F51;    /* Navy */
      --text-color: #2B3445;       /* Body Text */
      --hover-color: #AFC8FF;      /* Light Blue Hover */
      --bg-color: #F8FAFC;
      --white: #FFFFFF;
      --border-color: #E2E8F0;
      
      --success-color: #10B981;    /* Green */
      --success-bg: #DCFCE7;       /* Light Green Bg */
      --warning-color: #F59E0B;    /* Amber */
      --danger-color: #EF4444;     /* Red */
    }

    #mtpc_calculator_wrapper * { box-sizing: border-box; margin: 0; padding: 0; }

    #mtpc_calculator_wrapper {
      font-family: 'Inter', sans-serif;
      background-color: var(--bg-color);
      color: var(--text-color);
      line-height: 1.6;
      padding: 40px 20px;
      -webkit-font-smoothing: antialiased;
    }

    /* --- 2. LAYOUT --- */
    #mtpc_calculator_wrapper .mtpc_calculator-container {
      max-width: 1100px;
      margin: 0 auto;
      background: var(--white);
      border-radius: 12px;
      box-shadow: 0 4px 12px rgba(0, 0, 0, 0.07);
      border: 1px solid var(--border-color);
      overflow: hidden; /* Ensure rounded corners */
    }

    #mtpc_calculator_wrapper .mtpc_calculator-grid {
      display: grid;
      grid-template-columns: 1fr 1.3fr;
      min-height: 750px;
    }

    #mtpc_calculator_wrapper .mtpc_input-section, #mtpc_calculator_wrapper .mtpc_results-section { padding: 35px; }

    #mtpc_calculator_wrapper .mtpc_input-section {
      background-color: #ffffff;
      border-right: 1px solid var(--border-color);
      display: flex;
      flex-direction: column;
    }

    #mtpc_calculator_wrapper .mtpc_results-section {
      background-color: #fafbfd;
      display: flex;
      flex-direction: column;
      min-width: 0;
      position: relative;
    }
    
    /* Loading Overlay */
    #mtpc_calculator_wrapper .mtpc_results-section.mtpc_loading {
        opacity: 0.7;
        pointer-events: none;
    }

    /* FIX 1: Aligned Titles to Left */
    #mtpc_calculator_wrapper .mtpc_section-title {
      color: var(--primary-color);
      font-size: 18px;
      font-weight: 800;
      margin-bottom: 25px;
      padding-bottom: 10px;
      border-bottom: 2px solid var(--border-color);
      display: flex;
      justify-content: flex-start; /* Aligns title to the left */
      align-items: center;
    }

    /* --- 3. INPUTS --- */
    #mtpc_calculator_wrapper .mtpc_input-group { margin-bottom: 20px; position: relative; }
    
    #mtpc_calculator_wrapper .mtpc_input-row { display: flex; gap: 15px; margin-bottom: 20px; }
    #mtpc_calculator_wrapper .mtpc_input-row .mtpc_input-group { margin-bottom: 0; flex: 1; }

    #mtpc_calculator_wrapper .mtpc_input-group label {
      display: block; 
      margin-bottom: 8px;
      font-weight: 700; 
      color: var(--primary-color);
      font-size: 13px;
      text-transform: uppercase;
      letter-spacing: 0.5px;
    }

    #mtpc_calculator_wrapper .mtpc_input-wrapper { position: relative; width: 100%; }

    #mtpc_calculator_wrapper .mtpc_input-wrapper input, #mtpc_calculator_wrapper .mtpc_input-wrapper select {
      width: 100%;
      padding: 0 15px; /* Removed top/bottom padding, used height instead */
      border: 1px solid var(--border-color);
      border-radius: 8px;
      font-size: 16px; 
      background-color: var(--white);
      transition: border-color 0.2s, box-shadow 0.2s;
      font-family: 'Inter', sans-serif;
      color: var(--primary-color);
      font-weight: 500;
      appearance: none; /* Remove default arrow for custom styling */
      
      /* FIX 2: Strict Height Control for Dropdowns & Inputs */
      height: 50px;
      line-height: 48px; /* Slightly less than height to center vertically */
      display: block;
    }

    /* Dropdown Arrow & Spacing */
    #mtpc_calculator_wrapper .mtpc_input-wrapper select {
      background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%230B1F51' viewBox='0 0 16 16'%3E%3Cpath d='M7.247 11.14 2.451 5.658C1.885 5.013 2.345 4 3.204 4h9.592a1 1 0 0 1 .753 1.659l-4.796 5.48a1 1 0 0 1-1.506 0z'/%3E%3C/svg%3E");
      background-repeat: no-repeat;
      background-position: right 15px center;
      padding-right: 40px; /* Extra space so text doesn't hit arrow */
      cursor: pointer;
      overflow: visible; /* Ensure text isn't clipped */
      white-space: normal;
    }

    /* Error Styling */
    #mtpc_calculator_wrapper .mtpc_input-wrapper.mtpc_error input, #mtpc_calculator_wrapper .mtpc_input-wrapper.mtpc_error select {
        border-color: var(--danger-color);
        background-color: #FEF2F2;
    }

    #mtpc_calculator_wrapper .mtpc_error-msg {
        color: var(--danger-color);
        font-size: 11px;
        margin-top: 5px;
        font-weight: 600;
        display: none; 
        animation: slideDown 0.2s ease-out;
    }

    @keyframes slideDown {
        from { opacity: 0; transform: translateY(-5px); }
        to { opacity: 1; transform: translateY(0); }
    }
    
    #mtpc_calculator_wrapper .mtpc_input-wrapper input:focus, #mtpc_calculator_wrapper .mtpc_input-wrapper select:focus {
      outline: none;
      border-color: var(--primary-color);
      box-shadow: 0 0 0 3px rgba(11, 31, 81, 0.1);
    }

    #mtpc_calculator_wrapper .mtpc_helper-text {
        font-size: 11px;
        color: #64748B;
        margin-top: 5px;
        font-weight: 500;
    }

    /* Optional Sections */
    #mtpc_calculator_wrapper .mtpc_optional-header {
        display: flex;
        align-items: center;
        gap: 10px;
        font-size: 14px;
        font-weight: 700; 
        color: var(--primary-color);
        cursor: pointer;
        padding: 10px 0;
        user-select: none;
        border-top: 1px dashed var(--border-color);
        margin-top: 10px;
    }
    
    #mtpc_calculator_wrapper .mtpc_optional-header input[type="checkbox"] {
        accent-color: var(--primary-color);
        width: 16px;
        height: 16px;
        cursor: pointer;
    }

    #mtpc_calculator_wrapper .mtpc_optional-content {
        display: none;
        padding: 15px;
        background: #F1F5F9;
        border-radius: 8px;
        margin-bottom: 20px;
        border-left: 3px solid var(--primary-color);
    }

    /* Buttons */
    #mtpc_calculator_wrapper .mtpc_action-buttons { margin-top: auto; padding-top: 20px; display: grid; gap: 10px; grid-template-columns: 2fr 1fr; }
    
    #mtpc_calculator_wrapper button {
      padding: 14px;
      border-radius: 8px;
      cursor: pointer;
      font-size: 14px;
      font-weight: 600;
      transition: all 0.2s;
      border: 1px solid transparent;
      width: 100%;
    }

    #mtpc_calculator_wrapper #mtpc_calculateBtn { background-color: var(--primary-color); color: white; font-size: 16px; }
    #mtpc_calculator_wrapper #mtpc_resetBtn { background-color: white; color: var(--text-color); border-color: var(--border-color); }
    #mtpc_calculator_wrapper button:hover { transform: translateY(-1px); box-shadow: 0 4px 6px rgba(0,0,0,0.05); }

    /* --- 4. RESULTS UI --- */
    
    /* Hero Card */
    #mtpc_calculator_wrapper .mtpc_hero-card {
        background-color: var(--white);
        padding: 0;
        border-radius: 8px;
        border: 1px solid var(--border-color);
        border-left: 5px solid var(--primary-color);
        margin-bottom: 25px;
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
        overflow: hidden;
    }

    #mtpc_calculator_wrapper .mtpc_hero-main {
        padding: 25px;
        text-align: center;
        border-bottom: 1px solid var(--border-color);
    }
    
    #mtpc_calculator_wrapper .mtpc_hero-label { font-size: 13px; color: var(--primary-color); font-weight: 700; text-transform: uppercase; letter-spacing: 0.5px; margin-bottom: 8px; }
    #mtpc_calculator_wrapper .mtpc_hero-value { font-size: 38px; font-weight: 800; color: var(--primary-color); margin-bottom: 5px; letter-spacing: -1px; line-height: 1.1; }
    
    #mtpc_calculator_wrapper .mtpc_hero-subtext {
        font-size: 13px;
        color: #475569;
        margin-bottom: 15px;
        font-weight: 500;
    }

    /* Breakdown Grid */
    #mtpc_calculator_wrapper .mtpc_hero-grid {
        display: grid;
        grid-template-columns: 1fr 1fr 1fr; /* Default 3 columns for desktop */
        background: #F8FAFC;
    }

    #mtpc_calculator_wrapper .mtpc_hero-box {
        padding: 15px;
        text-align: center;
        border-right: 1px solid #CBD5E1;
        border-top: 1px solid #E2E8F0;
    }
    #mtpc_calculator_wrapper .mtpc_hero-box:last-child { border-right: none; }

    #mtpc_calculator_wrapper .mtpc_hero-box-label { font-size: 11px; font-weight: 700; color: var(--primary-color); text-transform: uppercase; margin-bottom: 4px; }
    #mtpc_calculator_wrapper .mtpc_hero-box-val { font-size: 16px; font-weight: 700; color: #334155; }

    /* Comparison Table */
    #mtpc_calculator_wrapper .mtpc_comparison-wrapper {
        background: var(--white);
        border: 1px solid var(--border-color);
        border-radius: 8px;
        margin-bottom: 25px;
        overflow: hidden;
        display: none; /* Hidden by default until calc */
    }

    #mtpc_calculator_wrapper .mtpc_comp-header {
        background: #F1F5F9;
        padding: 15px 20px;
        border-bottom: 1px solid var(--border-color);
        font-size: 14px;
        font-weight: 700;
        color: var(--primary-color);
        text-transform: uppercase;
        display: flex;
        justify-content: space-between;
    }

    #mtpc_calculator_wrapper .mtpc_comp-grid {
        display: grid;
        grid-template-columns: 1fr 1fr;
    }

    #mtpc_calculator_wrapper .mtpc_comp-col { padding: 0; }
    #mtpc_calculator_wrapper .mtpc_comp-col.mtpc_left { border-right: 2px solid #E2E8F0; } 
    
    #mtpc_calculator_wrapper .mtpc_comp-title-row {
        background: #F8FAFC;
        padding: 10px 15px;
        font-size: 13px;
        font-weight: 700;
        color: #334155;
        border-bottom: 1px solid var(--border-color);
        text-align: center;
    }

    #mtpc_calculator_wrapper .mtpc_comp-row {
        display: flex;
        justify-content: space-between;
        padding: 12px 15px;
        border-bottom: 1px solid #F1F5F9;
        font-size: 13px;
    }
    
    #mtpc_calculator_wrapper .mtpc_comp-row:last-child { border-bottom: none; }
    #mtpc_calculator_wrapper .mtpc_comp-label { color: #334155; font-weight: 700; }
    #mtpc_calculator_wrapper .mtpc_comp-val { font-weight: 600; color: var(--primary-color); text-align: right; }

    /* Savings Highlight */
    #mtpc_calculator_wrapper .mtpc_savings-row {
        background-color: var(--success-bg);
        border-top: 1px solid #BBF7D0;
    }
    #mtpc_calculator_wrapper .mtpc_savings-val { color: #166534; font-weight: 700; }
    
    #mtpc_calculator_wrapper .mtpc_highlight-blue {
        color: var(--primary-color) !important;
        font-weight: 800 !important;
    }

    /* Chart */
    #mtpc_calculator_wrapper .mtpc_chart-box {
        background: white;
        border: 1px solid var(--border-color);
        border-radius: 8px;
        padding: 15px;
        height: 300px;
        position: relative;
        margin-bottom: 20px;
    }
    @media (min-width: 901px) { #mtpc_calculator_wrapper .mtpc_chart-box { height: 350px; } }
    
    #mtpc_calculator_wrapper .mtpc_chart-disclaimer {
        font-size: 11px;
        color: #64748B;
        text-align: center;
        margin-top: 10px;
        font-style: italic;
    }

    #mtpc_calculator_wrapper .mtpc_details-toggle {
        display: block;
        width: 100%;
        text-align: center;
        background: none;
        border: 1px dashed var(--border-color);
        color: var(--primary-color);
        padding: 10px;
        margin-top: 10px;
        border-radius: 6px;
    }
    #mtpc_calculator_wrapper .mtpc_details-toggle:hover { background-color: #F1F5F9; }
    
    #mtpc_calculator_wrapper .mtpc_comp-note {
        font-size: 11px;
        color: #64748B;
        padding: 10px 20px;
        background: #F8FAFC;
        border-top: 1px solid var(--border-color);
        font-style: italic;
    }

    /* Print Styles */
    @media print {
        #mtpc_calculator_wrapper { padding: 0; background: white; }
        #mtpc_calculator_wrapper .mtpc_calculator-container { box-shadow: none; border: none; max-width: 100%; }
        #mtpc_calculator_wrapper .mtpc_calculator-grid { display: block; }
        #mtpc_calculator_wrapper .mtpc_input-section, #mtpc_calculator_wrapper .mtpc_action-buttons, #mtpc_calculator_wrapper .mtpc_details-toggle { display: none; }
        #mtpc_calculator_wrapper .mtpc_results-section { padding: 0; }
        #mtpc_calculator_wrapper .mtpc_hero-card, #mtpc_calculator_wrapper .mtpc_comparison-wrapper, #mtpc_calculator_wrapper .mtpc_chart-box { break-inside: avoid; border: 1px solid #ccc; box-shadow: none; }
    }

    /* FIX 3 & 4: Mobile Responsiveness */
    @media (max-width: 900px) {
      #mtpc_calculator_wrapper .mtpc_calculator-grid { grid-template-columns: 1fr; }
      #mtpc_calculator_wrapper .mtpc_input-section { 
          border-right: none; 
          border-bottom: 1px solid var(--border-color); 
          padding: 25px; 
      }
      #mtpc_calculator_wrapper .mtpc_results-section { padding: 25px; }
    }

    /* FIX 4: Mobile Results Grid Optimization (Max Width 600px) */
    @media (max-width: 600px) {
      /* Stack Inputs */
      #mtpc_calculator_wrapper .mtpc_input-row {
          flex-direction: column;
          gap: 0;
      }
      #mtpc_calculator_wrapper .mtpc_input-row .mtpc_input-group {
          margin-bottom: 15px;
          flex: 1 1 auto !important;
          width: 100%;
      }
      
      /* Optimize Results Grid: 2 Columns instead of 1 vertical stack */
      #mtpc_calculator_wrapper .mtpc_hero-grid {
          grid-template-columns: 1fr 1fr; /* Interest Left, Fees Right */
      }
      
      /* Make "Total Cost" span both columns so it's centered and clearer */
      #mtpc_calculator_wrapper .mtpc_hero-box:last-child {
          grid-column: span 2;
          border-right: none;
          border-bottom: none;
      }
      
      /* Remove border right from first item in row */
      #mtpc_calculator_wrapper .mtpc_hero-box:nth-child(2) {
          border-right: none;
      }

      /* Fix Big Number Text Wrapping */
      #mtpc_calculator_wrapper .mtpc_hero-value {
          font-size: 28px; /* Reduced from 38px */
          word-break: break-word;
      }
      
      #mtpc_calculator_wrapper {
          padding: 20px 10px; /* Reduced outer padding */
      }
    }