/* --- 1. VARIABLES & THEME --- */
    #irsax_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;       
      --warning-color: #F59E0B;    /* Amber */
      --warning-bg: #FEF3C7;
      --danger-color: #EF4444;     /* Red */
      --danger-bg: #FEF2F2;
      --info-bg: #EFF6FF;
      --info-text: #1E40AF;
      --input-bg: #FFFFFF;
      --select-bg: #F1F5F9;
    }

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

    #irsax_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;
      -moz-osx-font-smoothing: grayscale;
      text-rendering: optimizeLegibility;
    }

    /* Screen Reader Only Class */
    #irsax_calculator_wrapper .irsax_sr-only {
        position: absolute;
        width: 1px;
        height: 1px;
        padding: 0;
        margin: -1px;
        overflow: hidden;
        clip: rect(0, 0, 0, 0);
        white-space: nowrap;
        border: 0;
    }

    /* --- 2. LAYOUT --- */
    #irsax_calculator_wrapper .irsax_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: visible; 
    }

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

    #irsax_calculator_wrapper .irsax_input-section, #irsax_calculator_wrapper .irsax_results-section { padding: 35px; }

    #irsax_calculator_wrapper .irsax_input-section {
      background-color: #ffffff;
      border-right: 1px solid var(--border-color);
      display: flex;
      flex-direction: column;
      border-top-left-radius: 12px;
      border-bottom-left-radius: 12px;
      position: relative;
      z-index: 10;
    }

    #irsax_calculator_wrapper .irsax_results-section {
      background-color: #fafbfd;
      display: flex;
      flex-direction: column;
      min-width: 0;
      position: relative;
      border-top-right-radius: 12px;
      border-bottom-right-radius: 12px;
      z-index: 5;
    }
    
    #irsax_calculator_wrapper .irsax_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: space-between;
      align-items: center;
    }

    /* --- 3. INPUTS & CONTROLS --- */
    /* Guide Banner */
    #irsax_calculator_wrapper .irsax_guide-banner {
        background: var(--info-bg);
        color: var(--info-text);
        padding: 12px;
        border-radius: 8px;
        font-size: 13px;
        margin-bottom: 20px;
        border: 1px solid #DBEAFE;
    }
    #irsax_calculator_wrapper .irsax_guide-title { font-weight: 700; margin-bottom: 4px; display: block; }
    #irsax_calculator_wrapper .irsax_guide-item { display: block; margin-bottom: 2px; }

    /* Method Selector Tabs */
    #irsax_calculator_wrapper .irsax_method-tabs {
        display: flex;
        gap: 10px;
        margin-bottom: 20px;
        background: #F1F5F9;
        padding: 5px;
        border-radius: 8px;
    }
    
    #irsax_calculator_wrapper .irsax_method-tab {
        flex: 1;
        padding: 12px 10px;
        border: none;
        background: transparent;
        color: #1E293B !important; 
        font-weight: 700 !important;
        font-family: 'Inter', sans-serif !important;
        font-size: 13px;
        cursor: pointer;
        border-radius: 6px;
        transition: all 0.2s;
    }
    
    #irsax_calculator_wrapper .irsax_method-tab.irsax_active {
        background: var(--white);
        color: var(--primary-color) !important;
        box-shadow: 0 2px 4px rgba(0,0,0,0.05);
        font-weight: 900 !important;
    }

    #irsax_calculator_wrapper .irsax_input-group { margin-bottom: 20px; position: relative; }
    
    #irsax_calculator_wrapper .irsax_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;
    }

    #irsax_calculator_wrapper .irsax_input-wrapper { 
        position: relative; 
        width: 100%;
        z-index: 1; 
    }

    /* Standardized Input Field Class (Consolidated) */
    #irsax_calculator_wrapper .irsax_input-field,
    #irsax_calculator_wrapper .irsax_input-wrapper input, 
    #irsax_calculator_wrapper .irsax_input-wrapper select {
        width: 100%;
        padding: 12px 12px 12px 15px;
        border: 1px solid var(--border-color);
        border-radius: 8px;
        font-size: 16px; 
        background-color: var(--white);
        font-family: 'Inter', sans-serif;
        color: var(--primary-color);
        font-weight: 500;
        transition: border-color 0.2s;
        line-height: normal;
        /* FIXED: Reduced min-height slightly to match original aspect ratio better */
        min-height: 46px;
    }

    /* Focus States */
    #irsax_calculator_wrapper .irsax_input-field:focus,
    #irsax_calculator_wrapper .irsax_input-wrapper input:focus, 
    #irsax_calculator_wrapper .irsax_input-wrapper select:focus {
        outline: none;
        border-color: var(--primary-color);
        box-shadow: 0 0 0 3px rgba(11, 31, 81, 0.1);
        z-index: 20;
    }

    /* Specific select styles */
    #irsax_calculator_wrapper select.irsax_input-field,
    #irsax_calculator_wrapper .irsax_input-wrapper select {
        appearance: none;
        background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%230B1F51' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6 9 12 15 18 9'%3e%3c/polyline%3e%3c/svg%3e");
        background-repeat: no-repeat;
        background-position: right 18px center;
        background-size: 1em;
        /* FIXED: Tuned padding to be safe but not excessively wide */
        padding-right: 45px; 
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }
    
    /* FIXED: Restore the 60/40 width ratio for the Shape/Op row */
    #irsax_calculator_wrapper .irsax_shape-select {
        flex: 1.6;
    }
    #irsax_calculator_wrapper .irsax_op-select {
        flex: 1;
    }

    #irsax_calculator_wrapper .irsax_bg-select {
        background-color: var(--select-bg) !important;
    }

    /* Visual Error State */
    #irsax_calculator_wrapper .irsax_input-wrapper.irsax_error input, #irsax_calculator_wrapper .irsax_input-wrapper.irsax_error select,
    #irsax_calculator_wrapper input.irsax_input-field.irsax_error {
        border-color: var(--danger-color);
        background-color: var(--danger-bg);
    }

    #irsax_calculator_wrapper .irsax_error-msg {
        color: var(--danger-color);
        font-size: 11px;
        margin-top: 5px;
        font-weight: 600;
        display: none; 
        animation: irsax_fadeIn 0.3s;
    }
    
    #irsax_calculator_wrapper .irsax_warning-msg {
        color: #B45309;
        font-size: 11px;
        margin-top: 5px;
        font-weight: 600;
        display: none;
        padding: 4px 8px;
        background: var(--warning-bg);
        border-radius: 4px;
        animation: irsax_fadeIn 0.3s;
    }

    /* Helper Text */
    #irsax_calculator_wrapper .irsax_helper-text {
        font-size: 12px;
        color: #64748B;
        margin-bottom: 15px;
        font-style: italic;
        padding: 8px;
        background: #F8FAFC;
        border-radius: 6px;
        border-left: 3px solid #CBD5E1;
    }

    /* Dynamic Rows (for shapes/coords) */
    #irsax_calculator_wrapper .irsax_dynamic-list {
        display: flex;
        flex-direction: column;
        gap: 10px;
        margin-bottom: 15px;
        max-height: 400px;
        overflow-y: auto;
        padding: 5px;
    }

    #irsax_calculator_wrapper .irsax_dynamic-row {
        display: grid;
        grid-template-columns: 1fr auto;
        gap: 10px;
        background: #F8FAFC;
        padding: 10px;
        border: 1px solid var(--border-color);
        border-radius: 8px;
        align-items: center;
        animation: irsax_fadeIn 0.3s ease;
    }
    
    @keyframes irsax_fadeIn { from { opacity: 0; transform: translateY(-5px); } to { opacity: 1; transform: translateY(0); } }

    #irsax_calculator_wrapper .irsax_shape-inputs {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 8px;
        margin-top: 8px;
    }
    
    #irsax_calculator_wrapper .irsax_shape-inputs.irsax_three-cols {
        grid-template-columns: 1fr 1fr 1fr;
    }
    
    #irsax_calculator_wrapper .irsax_coord-inputs {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 10px;
    }

    #irsax_calculator_wrapper .irsax_remove-btn {
        background: #FEE2E2;
        color: #DC2626;
        border: none;
        width: 32px; 
        height: 32px;
        border-radius: 6px;
        cursor: pointer;
        display: flex;
        align-items: center;
        justify-content: center;
        font-weight: bold;
        font-size: 18px;
        transition: background 0.2s;
    }
    #irsax_calculator_wrapper .irsax_remove-btn:hover { background: #FECACA; }

    #irsax_calculator_wrapper .irsax_add-btn {
        background: transparent;
        border: 1px dashed var(--primary-color);
        color: var(--primary-color);
        padding: 12px;
        width: 100%;
        border-radius: 8px;
        font-weight: 600;
        cursor: pointer;
        margin-bottom: 20px;
    }
    #irsax_calculator_wrapper .irsax_add-btn:hover { background: #F1F5F9; }

    /* Action Buttons */
    #irsax_calculator_wrapper .irsax_action-buttons { 
        margin-top: auto; 
        padding-top: 20px; 
        display: grid; 
        gap: 10px; 
        grid-template-columns: 2fr 1fr 1fr; 
    }
    
    #irsax_calculator_wrapper button.irsax_primary-btn {
      background-color: var(--primary-color); color: white; border: none; padding: 14px; border-radius: 8px;
      font-weight: 600; font-size: 16px; cursor: pointer; transition: transform 0.1s;
    }
    #irsax_calculator_wrapper button.irsax_secondary-btn {
      background-color: white; color: var(--text-color); border: 1px solid var(--border-color); padding: 14px; border-radius: 8px;
      font-weight: 600; cursor: pointer;
    }
    #irsax_calculator_wrapper button.irsax_danger-btn {
      background-color: white; color: var(--danger-color); border: 1px solid var(--danger-color); padding: 14px; border-radius: 8px;
      font-weight: 600; cursor: pointer;
    }
    #irsax_calculator_wrapper button:active { transform: translateY(1px); }

    /* --- 4. RESULTS UI --- */
    #irsax_calculator_wrapper .irsax_hero-card {
        background-color: var(--white);
        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);
        position: relative;
    }

    #irsax_calculator_wrapper .irsax_hero-main {
        padding: 25px;
        text-align: center;
        border-bottom: 1px solid var(--border-color);
    }
    
    #irsax_calculator_wrapper .irsax_hero-label { font-size: 13px; color: var(--primary-color); font-weight: 700; text-transform: uppercase; letter-spacing: 0.5px; margin-bottom: 8px; }
    #irsax_calculator_wrapper .irsax_hero-value { font-size: 38px; font-weight: 800; color: var(--primary-color); margin-bottom: 5px; line-height: 1; }
    #irsax_calculator_wrapper .irsax_hero-subtext { font-size: 13px; color: #64748B; font-weight: 500; }

    #irsax_calculator_wrapper .irsax_approx-badge {
        position: absolute;
        top: 10px;
        right: 10px;
        background: #FEF3C7;
        color: #B45309;
        font-size: 10px;
        font-weight: 700;
        padding: 4px 8px;
        border-radius: 12px;
        text-transform: uppercase;
        display: none;
    }

    /* Breakdown Table */
    #irsax_calculator_wrapper .irsax_breakdown-box {
        background: var(--white);
        border: 1px solid var(--border-color);
        border-radius: 8px;
        overflow: hidden;
        margin-bottom: 20px;
    }
    
    #irsax_calculator_wrapper .irsax_breakdown-header {
        background: #F1F5F9;
        padding: 12px 20px;
        font-size: 13px;
        font-weight: 700;
        color: var(--primary-color);
        text-transform: uppercase;
        border-bottom: 1px solid var(--border-color);
        display: flex;
        justify-content: space-between;
        align-items: center;
    }

    #irsax_calculator_wrapper .irsax_result-row {
        display: flex;
        justify-content: space-between;
        padding: 12px 20px;
        border-bottom: 1px solid #F1F5F9;
        font-size: 14px;
        color: #334155;
    }
    #irsax_calculator_wrapper .irsax_result-row:last-child { border-bottom: none; }
    
    #irsax_calculator_wrapper .irsax_result-val { font-weight: 700; color: var(--primary-color); }
    #irsax_calculator_wrapper .irsax_val-negative { color: var(--danger-color); }

    /* Chart */
    #irsax_calculator_wrapper .irsax_chart-box {
        background: white;
        border: 1px solid var(--border-color);
        border-radius: 8px;
        padding: 15px;
        height: 300px;
        position: relative;
    }
    
    /* Toggle Checkbox */
    #irsax_calculator_wrapper .irsax_toggle-wrapper {
        display: flex;
        align-items: center;
        gap: 8px;
        margin-top: 10px;
        font-size: 13px;
        color: #475569;
        font-weight: 600;
        cursor: pointer;
    }
    
    /* Utility */
    #irsax_calculator_wrapper .irsax_hidden { display: none !important; }
    
    /* Mobile & Responsive */
    @media (max-width: 900px) {
      #irsax_calculator_wrapper .irsax_calculator-grid { grid-template-columns: 1fr; }
      #irsax_calculator_wrapper .irsax_input-section { 
          border-right: none; 
          border-bottom: 1px solid var(--border-color); 
          padding: 25px; 
          border-top-right-radius: 12px;
          border-bottom-left-radius: 0;
      }
      #irsax_calculator_wrapper .irsax_results-section { 
          padding: 25px; 
          border-top-right-radius: 0;
          border-bottom-left-radius: 12px;
      }
      #irsax_calculator_wrapper .irsax_action-buttons { grid-template-columns: 1fr 1fr; }
      #irsax_calculator_wrapper button.irsax_primary-btn { grid-column: span 2; }
    }

    /* Mobile Chart Adjustment */
    @media (max-width: 600px) {
        #irsax_calculator_wrapper .irsax_chart-box { height: 220px; }
    }