/* ==========================================================================
   DESIGN SYSTEM - PDFtoExcel.com Replicant Style
   ========================================================================== */

   :root {
    --color-primary-brand: #4f46e5; /* Primary brand indigo */
    --color-highlight-brand: #06b6d4; /* Electric cyan for highlights */
    --color-accent-red: #fe2300; /* Red/Orange for CTA buttons */
    --color-accent-red-hover: #f54d38;
    
    --color-header-bg: #ffffff;
    --color-body-bg: #f8fafc;
    --color-border: #e2e8f0;
    
    --color-text-dark: #1e293b;
    --color-text-muted: #64748b;
    --color-text-light: #f1f5f9;
    
    --color-success: #10b981;
    --color-danger: #ef4444;
    
    --font-heading: 'Roboto', -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    --font-body: 'Lato', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    
    --radius-lg: 8px;
    --radius-md: 6px;
    --radius-sm: 4px;
    
    --transition-fast: 0.15s ease;
    --transition-smooth: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  }
  
  /* Reset */
  * {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
  }
  
  body {
    background-color: var(--color-body-bg);
    color: var(--color-text-dark);
    font-family: var(--font-body);
    font-size: 15px;
    line-height: 1.6;
  }
  
  .wrapper {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
  }
  
  /* ==========================================================================
     HEADER STYLES
     ========================================================================== */
  
  .app-header {
    background-color: var(--color-header-bg);
    border-bottom: 1px solid var(--color-border);
    height: 72px;
    padding: 0 40px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 100;
  }
  
  @media (max-width: 640px) {
    .app-header {
      padding: 0 16px;
      height: auto;
      min-height: 72px;
      flex-direction: column;
      justify-content: center;
      gap: 8px;
      padding-bottom: 12px;
      padding-top: 12px;
    }
  }
  
  .header-left {
    flex: 1 1 0%;
    display: flex;
    justify-content: flex-start;
  }

  .logo-link {
    text-decoration: none;
    color: inherit;
    flex: 0 0 auto;
    display: flex;
    justify-content: center;
  }
  
  .logo {
    display: flex;
    align-items: center;
    gap: 10px;
  }
  
  .logo-icon-svg {
    width: 28px;
    height: 28px;
    color: var(--color-primary-brand);
  }
  
  .logo-img {
    height: 38px;
    width: auto;
    object-fit: contain;
  }
  
  .logo-text {
    font-family: var(--font-heading);
    font-size: 22px;
    font-weight: 700;
    color: #334155;
  }
  
  .logo-excel {
    color: var(--color-primary-brand);
  }
  
  .header-right {
    display: flex;
    align-items: center;
    gap: 20px;
    flex: 1 1 0%;
    justify-content: flex-end;
  }
  
  @media (max-width: 640px) {
    .header-right {
      width: 100%;
      justify-content: center;
    }
  }
  
  .premium-badge {
    background-color: var(--color-accent-red);
    color: #ffffff;
    font-weight: 700;
    font-size: 13px;
    padding: 6px 16px;
    border-radius: var(--radius-sm);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    cursor: pointer;
    transition: background-color var(--transition-fast);
  }
  
  .premium-badge:hover {
    background-color: var(--color-accent-red-hover);
  }
  
  .desktop-link {
    font-family: var(--font-heading);
    color: var(--color-text-muted);
    font-weight: 500;
    cursor: pointer;
    font-size: 14px;
    transition: color var(--transition-fast);
  }
  
  .desktop-link:hover {
    color: var(--color-primary-brand);
  }
  
  .logout-btn {
    background: transparent;
    border: 1px solid #cbd5e1;
    color: var(--color-text-muted);
    padding: 6px 14px;
    border-radius: var(--radius-sm);
    font-family: var(--font-body);
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
  }
  
  .logout-btn:hover {
    background-color: #f1f5f9;
    border-color: #94a3b8;
    color: var(--color-text-dark);
  }

  .admin-counter {
    display: flex;
    align-items: center;
    gap: 8px;
    background-color: #f8fafc;
    border: 1px solid var(--color-border);
    color: var(--color-text-dark);
    padding: 6px 14px;
    border-radius: 99px;
    font-family: var(--font-body);
    font-size: 13px;
    font-weight: 600;
    transition: all var(--transition-fast);
  }
  
  .admin-counter i {
    color: var(--color-success);
  }
  
  /* ==========================================================================
     CONVERTER (MAIN GRADIENT SECTION)
     ========================================================================== */
  
  .converter-section {
    background: linear-gradient(135deg, #0f172a 0%, #1e1b4b 50%, #020617 100%);
    background-size: 200% 200%;
    animation: gradientShift 15s ease infinite;
    color: #ffffff;
    padding: 50px 20px 60px;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
  }
  
  .site-title {
    margin-bottom: 36px;
  }
  
  .site-title h1 {
    font-family: var(--font-heading);
    font-size: 44px;
    font-weight: 700;
    margin-bottom: 8px;
    letter-spacing: -0.5px;
  }
  
  .site-title h1 .text-color-excel {
    color: var(--color-highlight-brand);
  }
  
  .site-title h2 {
    font-family: var(--font-body);
    font-size: 18px;
    font-weight: 300;
    opacity: 0.85;
  }
  
  @media (max-width: 640px) {
    .site-title h1 {
      font-size: 32px;
    }
    .site-title h2 {
      font-size: 15px;
    }
  }
  
  /* Uploader Box */
  .converting-box {
    width: 100%;
    max-width: 860px;
    margin: 0 auto;
  }
  
  .dropzone {
    border: 10px solid rgba(255, 255, 255, 0.95);
    background-color: transparent;
    border-radius: var(--radius-lg);
    padding: 54px 20px;
    cursor: pointer;
    transition: background-color var(--transition-smooth), border-color var(--transition-smooth);
  }
  
  .dropzone:hover, .dropzone.dragover {
    background-color: rgba(255, 255, 255, 0.04);
    border-color: #ffffff;
  }
  
  .dropzone-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
  }
  
  .upload-button-red {
    background-color: var(--color-accent-red);
    color: #ffffff;
    font-family: var(--font-heading);
    font-size: 22px;
    font-weight: 700;
    border: none;
    border-bottom: 4px solid rgba(0, 0, 0, 0.35);
    padding: 16px 48px;
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: background-color var(--transition-fast), transform 0.1s ease;
    outline: none;
    text-transform: capitalize;
  }
  
  .upload-button-red:hover {
    background-color: var(--color-accent-red-hover);
  }
  
  .upload-button-red:active {
    transform: translateY(2px);
    border-bottom-width: 2px;
  }
  
  .dropzone-text {
    font-size: 16px;
    opacity: 0.85;
    font-weight: 400;
  }
  
  /* Cloud Integration Layout */
  .cloud-upload {
    display: flex;
    justify-content: center;
    gap: 24px;
    margin-top: 24px;
    font-size: 14px;
  }
  
  @media (max-width: 640px) {
    .cloud-upload {
      flex-direction: column;
      align-items: center;
      gap: 12px;
    }
  }
  
  .cloud-item {
    color: rgba(255, 255, 255, 0.85);
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    text-decoration: none;
    transition: color var(--transition-fast), opacity var(--transition-fast);
  }
  
  .cloud-item:hover {
    color: #ffffff;
    opacity: 1;
  }
  
  .cloud-item i {
    font-size: 16px;
  }
  
  .cloud-item.disabled-cloud {
    opacity: 0.6;
    cursor: not-allowed;
  }
  
  /* File Selected Info Bar */
  .file-info-bar {
    background-color: #ffffff;
    border-radius: var(--radius-lg);
    color: var(--color-text-dark);
    padding: 20px 24px;
    margin-top: 10px;
    box-shadow: 0 10px 25px -5px rgba(0,0,0,0.2);
    display: flex;
    justify-content: space-between;
    align-items: center;
    text-align: left;
    border: 1px solid rgba(255, 255, 255, 0.1);
  }
  
  @media (max-width: 640px) {
    .file-info-bar {
      flex-direction: column;
      gap: 16px;
      text-align: center;
    }
  }
  
  .file-details {
    display: flex;
    align-items: center;
    gap: 16px;
  }
  
  @media (max-width: 640px) {
    .file-details {
      flex-direction: column;
    }
  }
  
  .file-pdf-icon {
    font-size: 36px;
    color: #ef4444;
  }
  
  .text-info {
    display: flex;
    flex-direction: column;
  }
  
  .text-info .name {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 16px;
    color: var(--color-text-dark);
    max-width: 320px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }
  
  .text-info .size {
    font-size: 13px;
    color: var(--color-text-muted);
  }
  
  .file-info-actions {
    display: flex;
    align-items: center;
    gap: 12px;
  }
  
  .primary-btn-red {
    background-color: var(--color-accent-red);
    color: #ffffff;
    border: none;
    border-bottom: 3px solid rgba(0, 0, 0, 0.25);
    padding: 12px 24px;
    border-radius: var(--radius-md);
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 14px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: background-color var(--transition-fast), transform 0.1s ease;
  }
  
  .primary-btn-red:hover {
    background-color: var(--color-accent-red-hover);
  }
  
  .primary-btn-red:active {
    transform: translateY(1px);
    border-bottom-width: 1px;
  }
  
  .primary-btn-red:disabled {
    background-color: #cbd5e1;
    color: #94a3b8;
    border-bottom-color: #cbd5e1;
    cursor: not-allowed;
    transform: none;
  }
  
  .icon-btn-danger {
    background-color: #fee2e2;
    border: 1px solid #fca5a5;
    color: #b91c1c;
    padding: 12px;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: background-color var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
  }
  
  .icon-btn-danger:hover {
    background-color: #fca5a5;
  }
  
  .icon-btn-danger:disabled {
    opacity: 0.5;
    cursor: not-allowed;
  }
  
  /* Advanced Config Trigger Button */
  .advanced-settings-wrapper {
    margin-top: 28px;
    width: 100%;
    max-width: 860px;
  }
  
  .advanced-toggle-btn {
    background-color: transparent;
    border: 1px solid rgba(255, 255, 255, 0.35);
    color: #ffffff;
    font-family: var(--font-body);
    font-size: 14px;
    font-weight: 600;
    padding: 8px 20px;
    border-radius: var(--radius-pill);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: background-color var(--transition-fast), border-color var(--transition-fast);
  }
  
  .advanced-toggle-btn:hover {
    background-color: rgba(255, 255, 255, 0.1);
    border-color: #ffffff;
  }
  
  /* Advanced Panel Accordion */
  .advanced-panel {
    background-color: #ffffff;
    border-radius: var(--radius-lg);
    box-shadow: 0 15px 35px -10px rgba(0,0,0,0.25);
    color: var(--color-text-dark);
    margin-top: 16px;
    padding: 30px;
    text-align: left;
    border: 1px solid var(--color-border);
    animation: slideDown 0.25s ease-out;
  }
  
  @keyframes slideDown {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
  }
  
  .advanced-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
  
  @media (max-width: 768px) {
    .advanced-grid {
      grid-template-columns: 1fr;
      gap: 24px;
    }
  }
  
  .advanced-col h3 {
    font-family: var(--font-heading);
    font-size: 15px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--color-primary-brand);
    margin-bottom: 18px;
    border-bottom: 1.5px solid var(--color-border);
    padding-bottom: 6px;
    display: flex;
    align-items: center;
    gap: 8px;
  }
  
  .control-group {
    margin-bottom: 18px;
    display: flex;
    flex-direction: column;
    gap: 8px;
  }
  
  .control-group label {
    font-size: 13.5px;
    font-weight: 600;
    color: var(--color-text-dark);
    display: flex;
    justify-content: space-between;
    align-items: center;
  }
  
  .val-display {
    background-color: #f1f5f9;
    color: var(--color-primary-brand);
    font-family: var(--font-mono);
    font-weight: 700;
    font-size: 12px;
    padding: 2px 8px;
    border-radius: 99px;
    border: 1px solid #cbd5e1;
  }
  
  /* Custom Inputs & Sliders */
  input[type="range"] {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 6px;
    background: #cbd5e1;
    border-radius: var(--radius-pill);
    outline: none;
    margin: 8px 0;
  }
  
  input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--color-primary-brand);
    cursor: pointer;
    box-shadow: 0 2px 5px rgba(0,0,0,0.15);
    border: 2.5px solid #ffffff;
    transition: transform var(--transition-fast);
  }
  
  input[type="range"]::-webkit-slider-thumb:hover {
    transform: scale(1.2);
  }
  
  select {
    background-color: #ffffff;
    border: 1.5px solid #cbd5e1;
    border-radius: var(--radius-md);
    padding: 10px 14px;
    font-family: var(--font-body);
    font-size: 13.5px;
    color: var(--color-text-dark);
    outline: none;
    cursor: pointer;
    transition: border-color var(--transition-fast);
    -webkit-appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2364748b' stroke-width='2.5'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 36px;
  }
  
  select:focus {
    border-color: var(--color-primary-brand);
  }
  
  .checkboxes-row {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-top: 14px;
  }
  
  .checkbox-group {
    flex-direction: row;
    align-items: center;
    gap: 10px;
    margin-bottom: 0;
  }
  
  .checkbox-group input[type="checkbox"] {
    width: 17px;
    height: 17px;
    cursor: pointer;
  }
  
  .checkbox-group label {
    font-weight: 500;
    cursor: pointer;
    user-select: none;
  }
  
  .help-text {
    font-size: 11.5px;
    color: var(--color-text-muted);
    line-height: 1.4;
  }
  
  /* System Log / Console */
  .console-panel {
    background-color: #0f172a;
    border-radius: var(--radius-lg);
    padding: 20px;
    margin-top: 24px;
    text-align: left;
    width: 100%;
    max-width: 860px;
    box-shadow: 0 15px 35px -10px rgba(0,0,0,0.3);
  }
  
  .panel-header-small {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    color: #94a3b8;
    margin-bottom: 12px;
  }
  
  .status-indicator {
    display: flex;
    align-items: center;
    gap: 6px;
    color: var(--color-highlight-brand);
  }
  
  .status-indicator::before {
    content: '';
    width: 7px;
    height: 7px;
    background-color: var(--color-highlight-brand);
    border-radius: 50%;
    display: inline-block;
  }
  
  .status-indicator.success {
    color: #34d399;
  }
  
  .status-indicator.success::before {
    background-color: #34d399;
  }
  
  .status-indicator.error {
    color: #f87171;
  }
  
  .status-indicator.error::before {
    background-color: #f87171;
  }
  
  .status-indicator.blinking {
    animation: statusBlink 1.5s infinite;
  }
  
  @keyframes statusBlink {
    50% { opacity: 0.5; }
  }
  
  .console-logs {
    font-family: var(--font-mono);
    font-size: 12px;
    background-color: #020617;
    border: 1px solid #1e293b;
    border-radius: var(--radius-md);
    padding: 12px 16px;
    height: 140px;
    overflow-y: auto;
    color: #cbd5e1;
    display: flex;
    flex-direction: column;
    gap: 6px;
  }
  
  .log-entry {
    line-height: 1.4;
  }
  
  .log-time {
    color: #475569;
    margin-right: 8px;
  }
  
  .log-success {
    color: #34d399;
  }
  
  .log-error {
    color: #f87171;
  }
  
  /* Progress Bar */
  .progress-bar-container {
    width: 100%;
    height: 4px;
    background-color: #1e293b;
    border-radius: 99px;
    margin-top: 14px;
    overflow: hidden;
  }
  
  .progress-bar {
    height: 100%;
    background-color: var(--color-accent-red);
    width: 0%;
    transition: width var(--transition-fast);
  }
  
  /* ==========================================================================
     HEADLINES SECTION (THREE BULLETS)
     ========================================================================== */
  
  .headlines {
    background-color: #ffffff;
    border-bottom: 1px solid var(--color-border);
    padding: 40px 60px;
    display: flex;
    justify-content: center;
    gap: 40px;
  }
  
  @media (max-width: 768px) {
    .headlines {
      flex-direction: column;
      padding: 30px 20px;
      gap: 24px;
    }
  }
  
  .headlines > div {
    flex: 1;
    max-width: 340px;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
  }
  
  .headlines > div i {
    font-size: 32px;
    color: var(--color-primary-brand);
  }
  
  .headlines > div p {
    font-size: 14.5px;
    color: var(--color-text-dark);
    font-weight: 500;
  }
  
  /* ==========================================================================
     PREVIEW PANEL (EXCEL WORKSPACE)
     ========================================================================== */
  
  .preview-panel {
    background-color: #ffffff;
    border-radius: var(--radius-lg);
    box-shadow: 0 10px 30px rgba(0,0,0,0.08);
    border: 1px solid var(--color-border);
    padding: 30px;
    margin: 40px auto;
    width: 92%;
    max-width: 1200px;
    display: flex;
    flex-direction: column;
    gap: 20px;
  }
  
  .preview-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
  }
  
  @media (max-width: 768px) {
    .preview-header {
      flex-direction: column;
      gap: 16px;
      text-align: center;
    }
  }
  
  .preview-title-group h3 {
    font-family: var(--font-heading);
    font-size: 20px;
    font-weight: 700;
    color: var(--color-text-dark);
  }
  
  .preview-title-group p {
    font-size: 13.5px;
    color: var(--color-text-muted);
    margin-top: 4px;
  }
  
  .action-buttons {
    display: flex;
    gap: 12px;
  }
  
  @media (max-width: 640px) {
    .action-buttons {
      width: 100%;
      flex-direction: column;
    }
  }
  
  .secondary-btn {
    background-color: #f1f5f9;
    border: 1px solid #cbd5e1;
    color: var(--color-text-dark);
    padding: 10px 20px;
    border-radius: var(--radius-md);
    font-family: var(--font-body);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    display: inline-flex;
    align-items: center;
    gap: 8px;
    justify-content: center;
  }
  
  .secondary-btn:hover {
    background-color: #e2e8f0;
  }
  
  .download-btn {
    background-color: #10b981;
    color: #ffffff;
    border: none;
    border-bottom: 3px solid rgba(0, 0, 0, 0.2);
    padding: 10px 24px;
    border-radius: var(--radius-md);
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 14px;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    justify-content: center;
    transition: background-color var(--transition-fast), transform 0.1s ease;
  }
  
  .download-btn:hover {
    background-color: #059669;
  }
  
  .download-btn:active {
    transform: translateY(1px);
    border-bottom-width: 1px;
  }
  
  /* Tabs */
  .page-tabs {
    display: flex;
    gap: 8px;
    border-bottom: 1.5px solid var(--color-border);
    padding-bottom: 2px;
    overflow-x: auto;
  }
  
  .tab-btn {
    background: none;
    border: none;
    color: var(--color-text-muted);
    padding: 8px 18px;
    font-family: var(--font-body);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    position: relative;
    transition: color var(--transition-fast);
    white-space: nowrap;
  }
  
  .tab-btn:hover {
    color: var(--color-text-dark);
  }
  
  .tab-btn.active {
    color: var(--color-primary-brand);
  }
  
  .tab-btn.active::after {
    content: '';
    position: absolute;
    bottom: -3px;
    left: 0;
    width: 100%;
    height: 3px;
    background-color: var(--color-primary-brand);
    border-radius: var(--radius-pill);
  }
  
  /* Table preview */
  .spreadsheet-container {
    overflow: auto;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    max-height: 480px;
    background-color: #ffffff;
  }
  
  .spreadsheet {
    border-collapse: collapse;
    font-family: var(--font-body);
    font-size: 13px;
    width: 100%;
  }
  
  .spreadsheet th, .spreadsheet td {
    border: 1px solid #e2e8f0;
    padding: 8px 12px;
    white-space: nowrap;
    vertical-align: middle;
  }
  
  .spreadsheet th {
    background-color: #f1f5f9;
    color: #475569;
    font-weight: 700;
    text-align: center;
    position: sticky;
    top: 0;
    z-index: 10;
    user-select: none;
    font-family: var(--font-heading);
  }
  
  .spreadsheet th.index-col {
    background-color: #e2e8f0;
    width: 50px;
    font-family: var(--font-mono);
    font-size: 11px;
    font-weight: 700;
  }
  
  .spreadsheet td.index-col {
    background-color: #f8fafc;
    color: #64748b;
    font-family: var(--font-mono);
    font-size: 11px;
    text-align: center;
    font-weight: 700;
    user-select: none;
  }
  
  .spreadsheet tr.preview-header-row th {
    background-color: #334155;
    color: #ffffff;
    font-weight: 700;
  }
  
  .spreadsheet tr:nth-child(even) td {
    background-color: #f8fafc;
  }
  
  .spreadsheet td.text-left {
    text-align: left;
  }
  
  .spreadsheet td.text-right {
    text-align: right;
    font-family: var(--font-mono);
  }
  
  .spreadsheet td.text-center {
    text-align: center;
  }
  
  .spreadsheet td.empty-cell {
    color: #94a3b8;
    font-style: italic;
  }
  
  /* ==========================================================================
     PITCH SECTION (BENEFITS GRID)
     ========================================================================== */
  
  .pitch-section {
    background-color: #ffffff;
    padding: 70px 40px 60px;
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
    text-align: center;
  }
  
  @media (max-width: 640px) {
    .pitch-section {
      padding: 40px 20px;
    }
  }
  
  .pitch-section h2 {
    font-family: var(--font-heading);
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 48px;
    color: var(--color-text-dark);
  }
  
  .row {
    display: flex;
    justify-content: center;
    gap: 36px;
    margin-bottom: 36px;
  }
  
  .row:last-child {
    margin-bottom: 0;
  }
  
  @media (max-width: 768px) {
    .row {
      flex-direction: column;
      gap: 36px;
      margin-bottom: 0;
    }
    .row + .row {
      margin-top: 36px;
    }
  }
  
  .col-4 {
    flex: 1;
    max-width: 340px;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
  }
  
  @media (max-width: 768px) {
    .col-4 {
      max-width: 100%;
    }
  }
  
  .col-4 h3 {
    font-family: var(--font-heading);
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--color-text-dark);
  }
  
  .col-4 h3 i {
    font-size: 28px;
    color: var(--color-primary-brand);
    margin-bottom: 10px;
    display: inline-block;
  }
  
  .col-4 p {
    font-size: 14px;
    color: var(--color-text-muted);
    line-height: 1.5;
  }
  
  /* ==========================================================================
     HOW TO SECTION
     ========================================================================== */
  
  .howto {
    background-color: #f1f5f9;
    padding: 60px 40px;
    text-align: center;
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
  }
  
  .howto h3 {
    font-family: var(--font-heading);
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 30px;
    color: var(--color-text-dark);
  }
  
  .howtocontent {
    display: flex;
    justify-content: center;
    max-width: 800px;
    margin: 0 auto;
  }
  
  .howtolist {
    text-align: left;
  }
  
  .howtolist ol {
    padding-left: 20px;
    display: flex;
    flex-direction: column;
    gap: 16px;
  }
  
  .howtolist li {
    font-size: 15px;
    color: var(--color-text-dark);
    font-weight: 500;
  }
  
  /* ==========================================================================
     FOOTER STYLES
     ========================================================================== */
  
  .app-footer {
    background: #0f172a;
    border-top: 1px solid var(--color-border);
    color: #94a3b8;
    padding: 24px 40px;
    font-size: 13.5px;
    text-align: center;
    margin-top: auto;
  }
  
  .app-footer a {
    color: var(--color-highlight-brand);
    text-decoration: underline;
    font-weight: 600;
  }
  
  .app-footer a:hover {
    color: #ffffff;
  }
  
  /* Helpers */
  .hidden {
    display: none !important;
  }
  
  .logo-excel-brand {
    color: var(--color-highlight-brand);
  }
  
  /* Custom Scrollbars */
  ::-webkit-scrollbar {
    width: 8px;
    height: 8px;
  }
  
  ::-webkit-scrollbar-track {
    background: #f1f5f9;
  }
  
  ::-webkit-scrollbar-thumb {
    background: #cbd5e1;
    border-radius: 4px;
  }
  
  ::-webkit-scrollbar-thumb:hover {
    background: #94a3b8;
  }
  
  
  /* ==========================================================================
     LOGIN OVERLAY / OVERRIDES
     ========================================================================== */
  
  .login-container {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: calc(100vh - 72px);
    width: 100%;
    padding: 20px;
  }
  
  .login-panel {
    width: 100%;
    max-width: 440px;
    background-color: #ffffff;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.06);
    padding: 40px;
    display: flex;
    flex-direction: column;
    gap: 24px;
  }
  
  .login-header {
    text-align: center;
  }
  
  .login-header .logo {
    justify-content: center;
    margin-bottom: 20px;
  }
  
  .login-title {
    font-family: var(--font-heading);
    font-size: 24px;
    font-weight: 700;
    color: var(--color-text-dark);
    margin-top: 10px;
  }
  
  .login-subtitle {
    font-size: 14px;
    color: var(--color-text-muted);
    margin-top: 6px;
  }
  
  .input-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
  }
  
  .input-label {
    font-size: 13.5px;
    font-weight: 600;
    color: var(--color-text-dark);
  }
  
  .input-field {
    background-color: #ffffff;
    border: 1.5px solid #cbd5e1;
    color: var(--color-text-dark);
    padding: 12px 16px;
    border-radius: var(--radius-md);
    font-family: var(--font-body);
    font-size: 14px;
    outline: none;
    transition: border-color var(--transition-fast);
  }
  
  .input-field:focus {
    border-color: var(--color-primary-brand);
  }
  
  .login-btn {
    width: 100%;
    background-color: var(--color-accent-red);
    color: white;
    border: none;
    border-bottom: 4px solid rgba(0,0,0,0.25);
    padding: 14px;
    border-radius: var(--radius-md);
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 16px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: background-color var(--transition-fast), transform 0.1s ease;
  }
  
  .login-btn:hover {
    background-color: var(--color-accent-red-hover);
  }
  
  .login-btn:active {
    transform: translateY(1px);
    border-bottom-width: 2px;
  }
  
  .error-alert {
    background-color: #fee2e2;
    border: 1px solid #fca5a5;
    color: #b91c1c;
    padding: 12px 16px;
    border-radius: var(--radius-md);
    font-size: 13.5px;
    display: none;
    align-items: center;
    gap: 10px;
    line-height: 1.4;
  }
  
  .error-alert svg {
    flex-shrink: 0;
  }

  /* Preview Table Heading Section Styles */
  .spreadsheet td.preview-company-heading {
    font-weight: bold;
    font-size: 16px;
    color: var(--color-primary-brand);
    text-align: left;
    border-bottom: none;
    background-color: #ffffff !important;
    padding-top: 12px;
    padding-bottom: 4px;
  }
  
  .spreadsheet td.preview-subheading {
    color: var(--color-text-muted);
    font-size: 12px;
    text-align: left;
    border-top: none;
    border-bottom: none;
    background-color: #ffffff !important;
    padding-top: 2px;
    padding-bottom: 2px;
  }
  
  .spreadsheet td.preview-heading-separator {
    height: 14px;
    border-top: none;
    border-bottom: none;
    background-color: #ffffff !important;
  }
  
  @keyframes gradientShift {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
  }