body {
      font-family: 'MyTest Clean', 'Segoe UI', Arial, sans-serif;
      background: #1e1e1e;
      margin: 0;
      min-height: 100vh;
      display: flex;
      align-items: flex-start;
      justify-content: center;
      padding-top: 15vh;
      /* Disable text selection */
      -webkit-user-select: none;
      -moz-user-select: none;
      -ms-user-select: none;
      user-select: none;
      /* Disable highlighting */
      -webkit-touch-callout: none;
      -webkit-tap-highlight-color: transparent;
    }

    /* Loading Screen - Simple dots on blurred background */
    #loading-screen {
      position: absolute;
      top: 50%;
      left: 50%;
      transform: translate(-50%, -50%);
      z-index: 3;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      transition: opacity 0.5s ease;
    }

    #loading-screen.fade-out {
      opacity: 0;
      pointer-events: none;
    }

    /* Simple Microsoft-style Rolling Dots */
    .loading-dots {
      display: flex;
      gap: 8px;
      align-items: center;
    }

    .loading-dots span {
      width: 10px;
      height: 10px;
      border-radius: 50%;
      background: #ffffff;
      animation: dotPulse 1.4s infinite ease-in-out;
    }

    .loading-dots span:nth-child(1) {
      animation-delay: -0.32s;
    }

    .loading-dots span:nth-child(2) {
      animation-delay: -0.16s;
    }

    .loading-dots span:nth-child(3) {
      animation-delay: 0s;
    }

    .loading-dots span:nth-child(4) {
      animation-delay: 0.16s;
    }

    .loading-dots span:nth-child(5) {
      animation-delay: 0.32s;
    }

    @keyframes dotPulse {
      0%, 80%, 100% {
        opacity: 0.3;
        transform: scale(0.8);
      }
      40% {
        opacity: 1;
        transform: scale(1);
      }
    }

    .loading-text {
      color: #ffffff;
      font-size: 14px;
      margin-top: 20px;
      font-weight: 400;
      letter-spacing: 0.5px;
    }

    /* Main content styles */
    #main-content {
      display: flex;
      width: 100%;
      height: 100vh;
      position: fixed;
      top: 0;
      left: 0;
      align-items: flex-start;
      justify-content: center;
      padding-top: 15vh;
      z-index: 1;
    }

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

    .browser-container {
      max-width: 400px;
      margin: 0 auto;
      background: #000000;
      border-radius: 4px;
      box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
      padding: 48px 48px 42px 48px;
      text-align: center;
      z-index: 2;
      position: relative;
      border-top: 4px solid #000000;
      transition: box-shadow 0.2s ease;
      display: none;
      opacity: 0;
      animation: fadeIn 0.5s ease forwards;
    }
    
    /* Chrome Container - Off-White with Blue Button */
    #chrome-container {
      background: #f5f5f0;
      border-top: 4px solid #1a73e8;
    }
    
    /* PASTE CHROME LOGO BASE64 BELOW (Line 244) */
    #chrome-container .browser-logo {
      content: url('../assets/chrome-logo.png');
    }
    
    #chrome-container .open-browser-btn {
      background: #1a73e8;
      color: #ffffff;
    }
    
    #chrome-container .open-browser-btn:hover {
      background: #1557b0;
      box-shadow: 0 2px 8px rgba(26, 115, 232, 0.4);
    }
    
    #chrome-container .open-browser-btn:active {
      background: #0d47a1;
    }
    
    /* Edge Container - Off-White with Blue Button */
    #edge-container {
      background: #f5f5f0;
      border-top: 4px solid #1a73e8;
    }
    
    /* PASTE EDGE LOGO BASE64 BELOW (Line 267) */
    #edge-container .browser-logo {
      content: url('../assets/edge-logo.png');
    }
    
    #edge-container .open-browser-btn {
      background: #1a73e8;
      color: #ffffff;
    }
    
    #edge-container .open-browser-btn:hover {
      background: #1557b0;
      box-shadow: 0 2px 8px rgba(26, 115, 232, 0.4);
    }
    
    #edge-container .open-browser-btn:active {
      background: #0d47a1;
    }
    
    /* Firefox Container - Off-White with Blue Button */
    #firefox-container {
      background: #f5f5f0;
      border-top: 4px solid #1a73e8;
    }
    
    /* PASTE FIREFOX LOGO BASE64 BELOW (Line 290) */
    #firefox-container .browser-logo {
      content: url('../assets/firefox-logo.png');
    }
    
    #firefox-container .open-browser-btn {
      background: #1a73e8;
      color: #ffffff;
    }
    
    #firefox-container .open-browser-btn:hover {
      background: #1557b0;
      box-shadow: 0 2px 8px rgba(26, 115, 232, 0.4);
    }
    
    #firefox-container .open-browser-btn:active {
      background: #0d47a1;
    }
    
    .browser-container.show {
      display: block;
      opacity: 1;
    }
    
    .browser-container:hover {
      box-shadow: 0 6px 16px rgba(0, 0, 0, 0.5);
    }
    
    .browser-container::before {
      display: none;
    }
    
    .browser-container .browser-logo {
      width: 64px;
      height: 64px;
      margin: 0 auto 20px auto;
      display: block;
      object-fit: contain;
      border-radius: 0;
      background: transparent;
      padding: 0;
      box-shadow: none;
    }
    
    .browser-container .instructions {
      font-size: 16px;
      color: #ffffff;
      margin-bottom: 28px;
      line-height: 1.5;
      font-weight: 400;
      font-family: 'MyTest Clean', 'Segoe UI', -apple-system, BlinkMacSystemFont, 'Roboto', 'Helvetica Neue', sans-serif;
    }
    
    .open-browser-btn {
      margin: 0 auto;
      display: inline-block;
      padding: 14px 32px;
      font-size: 16px;
      font-weight: 600;
      background: #FF0000;
      color: #ffffff;
      border: 1px solid transparent;
      border-radius: 4px;
      cursor: pointer;
      transition: all 0.2s ease;
      letter-spacing: 0;
      font-family: 'Segoe UI', -apple-system, BlinkMacSystemFont, 'Roboto', 'Helvetica Neue', sans-serif;
      box-shadow: none;
      position: relative;
      overflow: visible;
      width: auto;
    }
    
    .open-browser-btn::before {
      display: none;
    }
    
    .open-browser-btn:hover {
      background: #ED1C24;
      box-shadow: 0 2px 8px rgba(255, 0, 0, 0.4);
      transform: translateY(-1px);
    }
    
    .open-browser-btn:active {
      background: #CC0000;
      transform: translateY(0);
      box-shadow: none;
    }
    #iframe-modal {
      display: none;
      position: fixed;
      top: 0; left: 0;
      width: 100vw; height: 100vh;
      background: rgba(0,0,0,0.6);
      z-index: 9999;
      align-items: center;
      justify-content: center;
    }
    
    #iframe-modal.loading::after {
      content: '';
      position: absolute;
      top: 50%;
      left: 50%;
      width: 50px;
      height: 50px;
      margin: -25px 0 0 -25px;
      border: 4px solid rgba(255,255,255,0.3);
      border-top-color: #fff;
      border-radius: 50%;
      animation: spin 0.8s linear infinite;
      z-index: 10000;
    }
    
    @keyframes spin {
      to { transform: rotate(360deg); }
    }
    #iframe-modal .modal-content {
      background: #202124;
      border-radius: 8px;
      max-width: 90vw;
      max-height: 90vh;
      width: 1400px;
      height: 900px;
      min-width: 320px;
      min-height: 200px;
      box-shadow: 0 20px 60px rgba(0,0,0,0.5);
      border: 1px solid #3c4043;
      position: fixed;
      display: flex;
      flex-direction: column;
      overflow: hidden;
      cursor: move;
      transition: none;
    }
    
    #iframe-modal .modal-content.dragging {
      user-select: none;
      pointer-events: auto;
      will-change: left, top;
    }
    
    #iframe-modal .modal-content.minimized {
      height: 38px;
      overflow: hidden;
    }
    
    #iframe-modal .modal-content.maximized {
      width: 100vw !important;
      height: 100vh !important;
      max-width: 100vw !important;
      max-height: 100vh !important;
      top: 0 !important;
      left: 0 !important;
      border-radius: 0;
    }
    @media (max-width: 750px) {
      #iframe-modal .modal-content {
        width: 90vw;
        height: 90vh;
        max-width: 98vw;
        max-height: 98vh;
      }
    }
    /* Browser Header Styles */
    .browser-header {
      background: #202124;
      display: flex;
      flex-direction: column;
    }
    
    /* Tab Bar */
    .tab-bar {
      height: 38px;
      background: #202124;
      display: flex;
      align-items: flex-end;
      padding: 0 8px 0 80px;
      position: relative;
      cursor: move;
      user-select: none;
    }
    
    .tab {
      height: 32px;
      min-width: 240px;
      max-width: 240px;
      background: #35363a;
      border-top-left-radius: 8px;
      border-top-right-radius: 8px;
      display: flex;
      align-items: center;
      padding: 0 12px;
      margin-right: -1px;
      position: relative;
      cursor: pointer;
      transition: background 0.1s;
    }
    
    .tab.active {
      background: #2d2e31;
      z-index: 2;
    }
    
    .tab-favicon {
      width: 16px;
      height: 16px;
      margin-right: 8px;
      flex-shrink: 0;
    }
    
    .tab-title {
      flex: 1;
      color: #e8eaed;
      font-size: 12px;
      font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;
    }
    
    .tab-close {
      width: 16px;
      height: 16px;
      margin-left: 8px;
      border-radius: 4px;
      display: flex;
      align-items: center;
      justify-content: center;
      transition: background 0.1s;
      cursor: pointer;
    }
    
    .tab-close:hover {
      background: rgba(255, 255, 255, 0.1);
    }
    
    .tab-close svg {
      width: 10px;
      height: 10px;
      stroke: #9aa0a6;
      stroke-width: 1.5;
    }
    
    /* Browser-specific idle tab visibility */
    .chrome-idle-tab,
    .edge-idle-tab,
    .firefox-idle-tab,
    .generic-idle-tab {
      display: none;
    }
    
    .browser-chrome .chrome-idle-tab {
      display: flex;
    }
    
    .browser-edge .edge-idle-tab {
      display: flex;
    }
    
    .browser-firefox .firefox-idle-tab {
      display: flex;
    }
    
    .browser-generic .generic-idle-tab {
      display: flex;
    }
    
    /* Window Controls */
    .window-controls {
      position: absolute;
      top: 0;
      right: 0;
      display: flex;
      height: 38px;
      z-index: 10;
    }
    
    .window-control {
      width: 46px;
      height: 38px;
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      transition: background 0.1s;
      position: relative;
    }
    
    .window-control:hover {
      background: rgba(255, 255, 255, 0.1);
    }
    
    .window-control.close:hover {
      background: #e81123;
    }
    
    .window-control::before {
      content: '';
      position: absolute;
      display: block;
    }
    
    .window-control.minimize::before {
      width: 10px;
      height: 1px;
      background: #ffffff;
    }
    
    .window-control.maximize::before {
      width: 9px;
      height: 9px;
      border: 1px solid #ffffff;
      background: transparent;
      box-sizing: border-box;
    }
    
    .window-control.close::before,
    .window-control.close::after {
      width: 11px;
      height: 1px;
      background: #ffffff;
    }
    
    .window-control.close::before {
      transform: rotate(45deg);
    }
    
    .window-control.close::after {
      content: '';
      position: absolute;
      transform: rotate(-45deg);
    }
    
    .window-control.close:hover::before,
    .window-control.close:hover::after {
      background: #fff;
    }
    
    /* Navigation Bar */
    .nav-bar {
      height: 40px;
      background: #2d2e31;
      display: flex;
      align-items: center;
      padding: 0 16px;
      gap: 8px;
      border-bottom: 1px solid #3c4043;
    }
    
    .nav-button {
      width: 32px;
      height: 28px;
      border-radius: 4px;
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      transition: background 0.1s;
    }
    
    .nav-button:hover:not(.disabled) {
      background: rgba(255, 255, 255, 0.1);
    }
    
    .nav-button.disabled {
      opacity: 0.4;
      cursor: default;
    }
    
    .nav-button svg {
      width: 16px;
      height: 16px;
      stroke: #9aa0a6;
      stroke-width: 2;
      fill: none;
    }
    /* Address Bar */
    .address-bar-container {
      flex: 1;
      background: #202124;
      border-radius: 20px;
      border: 1px solid #5f6368;
      display: flex;
      align-items: center;
      padding: 0 4px;
      height: 32px;
      transition: background 0.1s, border-color 0.1s;
    }
    
    .address-bar-container:hover {
      background: #303134;
    }
    
    .address-bar-container:focus-within {
      background: #303134;
      border-color: #8ab4f8;
    }
    .site-info {
      display: flex;
      align-items: center;
      padding: 0 8px;
      height: 24px;
      border-radius: 12px;
      transition: background 0.1s;
      cursor: pointer;
      flex: 1;
    }
    
    .site-info:hover {
      background: rgba(255, 255, 255, 0.1);
    }
    
    .lock-icon {
      width: 20px;
      height: 20px;
      margin-right: 8px;
    }
    
    /* Star icon inside address bar */
    .address-bar-star {
      display: flex;
      align-items: center;
      justify-content: center;
      width: 28px;
      height: 28px;
      margin-right: 4px;
      border-radius: 4px;
      cursor: pointer;
      transition: background 0.1s;
    }
    
    .address-bar-star:hover {
      background: rgba(255, 255, 255, 0.1);
    }
    
    .address-bar-star svg {
      stroke: #9aa0a6;
    }
    
    .browser-firefox .address-bar-star svg {
      stroke: #cfcfd8;
    }
    
    .browser-edge .address-bar-star svg {
      stroke: #b4b4b4;
    }
    
    .url-text {
      color: #e8eaed;
      font-size: 14px;
      font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;
      max-width: 600px;
    }
    
    .nav-extensions {
      display: flex;
      align-items: center;
      gap: 4px;
      margin-left: 8px;
    }
    
    .extension-icon {
      width: 28px;
      height: 28px;
      border-radius: 4px;
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      transition: background 0.1s;
    }
    
    .extension-icon:hover {
      background: rgba(255, 255, 255, 0.1);
    }
    
    .extension-icon img {
      width: 20px;
      height: 20px;
    }
    
    .extension-icon svg {
      stroke: #9aa0a6;
    }
    
    /* Browser-specific icon visibility */
    .firefox-only {
      display: none;
    }
    
    .browser-firefox .firefox-only {
      display: flex;
    }
    
    .browser-chrome .firefox-only,
    .browser-edge .firefox-only,
    .browser-safari .firefox-only {
      display: none;
    }
    
    .edge-only {
      display: none;
    }
    
    .browser-edge .edge-only {
      display: flex;
    }
    
    .browser-chrome .edge-only,
    .browser-firefox .edge-only,
    .browser-safari .edge-only {
      display: none;
    }
    
    /* Navigation button enhancements */
    .nav-back svg,
    .nav-forward svg,
    .nav-refresh svg,
    .nav-home svg {
      stroke: currentColor;
    }
    
    .nav-button.disabled {
      opacity: 0.3;
    }
    
    .nav-back,
    .nav-forward {
      width: 34px;
    }
    
    .browser-firefox .nav-home {
      display: none;
    }
    
    .browser-chrome .nav-home {
      display: none;
    }
    
    /* Copilot icon styling for Edge */
    .copilot-icon {
      margin-left: 4px;
      position: relative;
    }
    
    .copilot-icon img,
    .copilot-icon svg {
      filter: drop-shadow(0 1px 2px rgba(0, 0, 0, 0.2));
      transition: transform 0.2s ease;
    }
    
    .copilot-icon:hover img,
    .copilot-icon:hover svg {
      transform: scale(1.1);
      filter: drop-shadow(0 2px 4px rgba(75, 111, 231, 0.4));
    }
    
    .browser-edge .copilot-icon {
      display: flex;
      align-items: center;
      justify-content: center;
    }
    
    .copilot-icon img {
      width: 22px;
      height: 22px;
      object-fit: contain;
    }
    
    /* Menu styling */
    .browser-menu {
      position: relative;
    }
    
    .menu-dots {
      display: block;
    }
    
    .menu-hamburger {
      display: none;
    }
    
    .browser-firefox .menu-dots {
      display: none;
    }
    
    .browser-firefox .menu-hamburger {
      display: block;
      stroke: #cfcfd8;
    }
    
    .browser-menu {
      width: 32px;
      height: 28px;
      border-radius: 4px;
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      transition: background 0.1s;
      margin-left: 8px;
    }
    
    .browser-menu:hover {
      background: rgba(255, 255, 255, 0.1);
    }
    
    /* Browser-specific styles */
    
    /* ===== CHROME (Default) ===== */
    .browser-chrome .tab-bar {
      background: #202124;
    }
    
    .browser-chrome .modal-content {
      background: #202124;
      border: 1px solid #3c4043;
    }
    
    .browser-chrome .tab {
      background: #35363a;
    }
    
    .browser-chrome .tab.active {
      background: #2d2e31;
    }
    
    .browser-chrome .nav-bar {
      background: #2d2e31;
      border-bottom: 1px solid #3c4043;
    }
    
    .browser-chrome .address-bar-container {
      background: #202124;
      border-color: #5f6368;
    }
    
    .browser-chrome .address-bar-container:hover {
      background: #303134;
    }
    
    .browser-chrome .extension-icon svg {
      stroke: #9aa0a6;
    }
    
    .browser-chrome .bookmark-icon svg {
      fill: none;
      stroke: #9aa0a6;
    }
    
    /* ===== FIREFOX ===== */
    .browser-firefox .modal-content {
      background: #1c1b22;
      border: 1px solid #52525e;
    }
    
    .browser-firefox .browser-header {
      background: #1c1b22;
    }
    
    .browser-firefox .tab-bar {
      background: #1c1b22;
      padding: 0 8px 0 80px;
    }
    
    .browser-firefox .tab {
      background: #42414d;
      border-radius: 8px 8px 0 0;
      height: 36px;
      min-width: 200px;
      max-width: 200px;
      margin-right: 2px;
    }
    
    .browser-firefox .tab.active {
      background: #2b2a33;
    }
    
    .browser-firefox .tab-title {
      color: #fbfbfe;
    }
    
    .browser-firefox .tab-close svg {
      stroke: #cfcfd8;
    }
    
    .browser-firefox .nav-bar {
      background: #2b2a33;
      border-bottom: 1px solid #52525e;
      height: 42px;
    }
    
    .browser-firefox .address-bar-container {
      background: #42414d;
      border-color: #52525e;
      border-radius: 6px;
    }
    
    .browser-firefox .address-bar-container:hover {
      background: #52525e;
    }
    
    .browser-firefox .address-bar-container:focus-within {
      background: #42414d;
      border-color: #0a84ff;
    }
    
    .browser-firefox .url-text {
      color: #fbfbfe;
    }
    
    .browser-firefox .nav-button svg {
      stroke: #cfcfd8;
    }
    
    .browser-firefox .window-control::before {
      background: #ffffff;
    }
    
    .browser-firefox .window-control.close::before,
    .browser-firefox .window-control.close::after {
      background: #ffffff;
    }
    
    .browser-firefox .extension-icon svg {
      stroke: #cfcfd8;
    }
    
    .browser-firefox .bookmark-icon svg {
      fill: none;
      stroke: #cfcfd8;
    }
    
    /* ===== MICROSOFT EDGE ===== */
    .browser-edge .modal-content {
      background: #1e1e1e;
      border: 1px solid #3d3d3d;
    }
    
    .browser-edge .browser-header {
      background: #1e1e1e;
    }
    
    .browser-edge .tab-bar {
      background: #1e1e1e;
      padding: 0 8px 0 80px;
    }
    
    .browser-edge .tab {
      background: #2d2d2d;
      border-radius: 6px 6px 0 0;
      height: 34px;
      min-width: 220px;
      max-width: 220px;
    }
    
    .browser-edge .tab.active {
      background: #262626;
    }
    
    .browser-edge .tab-title {
      color: #ffffff;
    }
    
    .browser-edge .tab-close svg {
      stroke: #b4b4b4;
    }
    
    .browser-edge .nav-bar {
      background: #262626;
      border-bottom: 1px solid #3d3d3d;
      height: 42px;
    }
    
    .browser-edge .address-bar-container {
      background: #323232;
      border-color: #4a4a4a;
      border-radius: 20px;
    }
    
    .browser-edge .address-bar-container:hover {
      background: #3d3d3d;
    }
    
    .browser-edge .address-bar-container:focus-within {
      background: #3d3d3d;
      border-color: #0078d4;
    }
    
    .browser-edge .url-text {
      color: #ffffff;
    }
    
    .browser-edge .nav-button svg {
      stroke: #b4b4b4;
    }
    
    .browser-edge .window-control::before {
      background: #ffffff;
    }
    
    .browser-edge .window-control.close::before,
    .browser-edge .window-control.close::after {
      background: #ffffff;
    }
    
    .browser-edge .window-control.close:hover::before,
    .browser-edge .window-control.close:hover::after {
      background: #ffffff;
    }
    
    .browser-edge .extension-icon svg {
      stroke: #b4b4b4;
    }
    
    .browser-edge .bookmark-icon svg {
      fill: none;
      stroke: #b4b4b4;
    }
    
    .browser-edge .collections-icon {
      display: flex;
    }
    
    /* ===== GENERIC BROWSER (Safari, Opera, and others) ===== */
    /* Uses original simple design similar to Chrome */
    .browser-generic .modal-content {
      background: #2d2e31;
      border: 1px solid #5f6368;
    }
    
    .browser-generic .browser-header {
      background: #2d2e31;
    }
    
    .browser-generic .tab-bar {
      background: #2d2e31;
    }
    
    .browser-generic .tab {
      background: #35363a;
    }
    
    .browser-generic .tab.active {
      background: #2d2e31;
    }
    
    .browser-generic .tab-title {
      color: #e8eaed;
    }
    
    .browser-generic .nav-bar {
      background: #2d2e31;
      border-bottom: 1px solid #5f6368;
    }
    
    .browser-generic .address-bar-container {
      background: #35363a;
      border-color: #5f6368;
    }
    
    .browser-generic .address-bar-container:hover {
      background: #3c3d41;
    }
    
    .browser-generic .address-bar-container:focus-within {
      background: #35363a;
      border-color: #8ab4f8;
    }
    
    .browser-generic .url-text {
      color: #e8eaed;
    }
    
    .browser-generic .nav-button svg {
      stroke: #9aa0a6;
    }
    
    .browser-generic .extension-icon svg {
      stroke: #9aa0a6;
    }
    
    .browser-generic .address-bar-star svg {
      stroke: #9aa0a6;
    }
    
    .browser-generic .window-control::before {
      background: #ffffff;
    }
    
    .browser-generic .window-control.close::before,
    .browser-generic .window-control.close::after {
      background: #ffffff;
    }
    
    .browser-generic .window-control.close:hover::before,
    .browser-generic .window-control.close:hover::after {
      background: #ffffff;
    }
    
    .browser-generic .menu-dots {
      fill: #9aa0a6;
    }
    
    /* ============================================= */
    /* LIGHT MODE THEMES FOR ALL BROWSERS */
    /* ============================================= */
    
    /* ===== CHROME LIGHT MODE ===== */
    .browser-chrome.light-theme .modal-content {
      background: #ffffff;
      border: 1px solid #dadce0;
    }
    
    .browser-chrome.light-theme .browser-header {
      background: #ffffff;
    }
    
    .browser-chrome.light-theme .tab-bar {
      background: #ffffff;
    }
    
    .browser-chrome.light-theme .tab {
      background: #e8eaed;
    }
    
    .browser-chrome.light-theme .tab.active {
      background: #ffffff;
    }
    
    .browser-chrome.light-theme .tab-title {
      color: #202124;
    }
    
    .browser-chrome.light-theme .tab-close svg {
      stroke: #5f6368;
    }
    
    .browser-chrome.light-theme .nav-bar {
      background: #ffffff;
      border-bottom: 1px solid #dadce0;
    }
    
    .browser-chrome.light-theme .address-bar-container {
      background: #f1f3f4;
      border-color: #dadce0;
    }
    
    .browser-chrome.light-theme .address-bar-container:hover {
      background: #e8eaed;
    }
    
    .browser-chrome.light-theme .address-bar-container:focus-within {
      background: #ffffff;
      border-color: #1a73e8;
    }
    
    .browser-chrome.light-theme .url-text {
      color: #202124;
    }
    
    .browser-chrome.light-theme .nav-button svg {
      stroke: #5f6368;
    }
    
    .browser-chrome.light-theme .extension-icon svg {
      stroke: #5f6368;
    }
    
    .browser-chrome.light-theme .address-bar-star svg {
      stroke: #5f6368;
    }
    
    .browser-chrome.light-theme .window-control::before {
      background: #5f6368;
    }
    
    .browser-chrome.light-theme .window-control.close::before,
    .browser-chrome.light-theme .window-control.close::after {
      background: #5f6368;
    }
    
    .browser-chrome.light-theme .menu-dots {
      fill: #5f6368;
    }
    
    /* ===== FIREFOX LIGHT MODE ===== */
    .browser-firefox.light-theme .modal-content {
      background: #f9f9fb;
      border: 1px solid #d7d7db;
    }
    
    .browser-firefox.light-theme .browser-header {
      background: #f9f9fb;
    }
    
    .browser-firefox.light-theme .tab-bar {
      background: #f9f9fb;
    }
    
    .browser-firefox.light-theme .tab {
      background: #e0e0e6;
    }
    
    .browser-firefox.light-theme .tab.active {
      background: #ffffff;
    }
    
    .browser-firefox.light-theme .tab-title {
      color: #0c0c0d;
    }
    
    .browser-firefox.light-theme .tab-close svg {
      stroke: #737373;
    }
    
    .browser-firefox.light-theme .nav-bar {
      background: #ffffff;
      border-bottom: 1px solid #d7d7db;
    }
    
    .browser-firefox.light-theme .address-bar-container {
      background: #2b2a33;
      border-color: #3a3944;
    }
    
    .browser-firefox.light-theme .address-bar-container:hover {
      background: #38373f;
    }
    
    .browser-firefox.light-theme .address-bar-container:focus-within {
      background: #2b2a33;
      border-color: #0060df;
    }
    
    .browser-firefox.light-theme .url-text {
      color: #fbfbfe;
    }
    
    .browser-firefox.light-theme .nav-button svg {
      stroke: #ffffff;
    }
    
    .browser-firefox.light-theme .extension-icon svg {
      stroke: #ffffff;
    }
    
    .browser-firefox.light-theme .address-bar-star svg {
      stroke: #ffffff;
    }
    
    .browser-firefox.light-theme .lock-icon {
      opacity: 0.9;
    }
    
    .browser-firefox.light-theme .lock-icon circle,
    .browser-firefox.light-theme .lock-icon line {
      stroke: #ffffff;
      fill: #ffffff;
    }
    
    .browser-firefox.light-theme .window-control::before {
      background: #737373;
    }
    
    .browser-firefox.light-theme .window-control.close::before,
    .browser-firefox.light-theme .window-control.close::after {
      background: #737373;
    }
    
    .browser-firefox.light-theme .menu-hamburger {
      stroke: #ffffff;
    }
    
    /* ===== MICROSOFT EDGE LIGHT MODE ===== */
    .browser-edge.light-theme .modal-content {
      background: #ffffff;
      border: 1px solid #e1e1e1;
    }
    
    .browser-edge.light-theme .browser-header {
      background: #ffffff;
    }
    
    .browser-edge.light-theme .tab-bar {
      background: #ffffff;
    }
    
    .browser-edge.light-theme .tab {
      background: #f3f3f3;
    }
    
    .browser-edge.light-theme .tab.active {
      background: #ffffff;
    }
    
    .browser-edge.light-theme .tab-title {
      color: #242424;
    }
    
    .browser-edge.light-theme .tab-close svg {
      stroke: #605e5c;
    }
    
    .browser-edge.light-theme .nav-bar {
      background: #ffffff;
      border-bottom: 1px solid #e1e1e1;
    }
    
    .browser-edge.light-theme .address-bar-container {
      background: #e3e3e3;
      border-color: #c8c8c8;
    }
    
    .browser-edge.light-theme .address-bar-container:hover {
      background: #d4d4d4;
    }
    
    .browser-edge.light-theme .address-bar-container:focus-within {
      background: #ffffff;
      border-color: #0067b8;
    }
    
    .browser-edge.light-theme .url-text {
      color: #242424;
    }
    
    .browser-edge.light-theme .nav-button svg {
      stroke: #424242;
    }
    
    .browser-edge.light-theme .extension-icon svg {
      stroke: #424242;
    }
    
    .browser-edge.light-theme .address-bar-star svg {
      stroke: #424242;
    }
    
    .browser-edge.light-theme .lock-icon circle,
    .browser-edge.light-theme .lock-icon line {
      stroke: #424242;
      fill: #424242;
    }
    
    .browser-edge.light-theme .window-control::before {
      background: #605e5c;
    }
    
    .browser-edge.light-theme .window-control.close::before,
    .browser-edge.light-theme .window-control.close::after {
      background: #605e5c;
    }
    
    .browser-edge.light-theme .menu-dots {
      fill: #605e5c;
    }
    
    /* ===== GENERIC BROWSER LIGHT MODE ===== */
    .browser-generic.light-theme .modal-content {
      background: #ffffff;
      border: 1px solid #dadce0;
    }
    
    .browser-generic.light-theme .browser-header {
      background: #ffffff;
    }
    
    .browser-generic.light-theme .tab-bar {
      background: #ffffff;
    }
    
    .browser-generic.light-theme .tab {
      background: #e8eaed;
    }
    
    .browser-generic.light-theme .tab.active {
      background: #ffffff;
    }
    
    .browser-generic.light-theme .tab-title {
      color: #202124;
    }
    
    .browser-generic.light-theme .tab-close svg {
      stroke: #5f6368;
    }
    
    .browser-generic.light-theme .nav-bar {
      background: #ffffff;
      border-bottom: 1px solid #dadce0;
    }
    
    .browser-generic.light-theme .address-bar-container {
      background: #f1f3f4;
      border-color: #dadce0;
    }
    
    .browser-generic.light-theme .address-bar-container:hover {
      background: #e8eaed;
    }
    
    .browser-generic.light-theme .address-bar-container:focus-within {
      background: #ffffff;
      border-color: #1a73e8;
    }
    
    .browser-generic.light-theme .url-text {
      color: #202124;
    }
    
    .browser-generic.light-theme .nav-button svg {
      stroke: #5f6368;
    }
    
    .browser-generic.light-theme .extension-icon svg {
      stroke: #5f6368;
    }
    
    .browser-generic.light-theme .address-bar-star svg {
      stroke: #5f6368;
    }
    
    .browser-generic.light-theme .window-control::before {
      background: #5f6368;
    }
    
    .browser-generic.light-theme .window-control.close::before,
    .browser-generic.light-theme .window-control.close::after {
      background: #5f6368;
    }
    
    .browser-generic.light-theme .menu-dots {
      fill: #5f6368;
    }
    
    #popup-iframe {
      flex: 1;
      width: 100%;
      border: none;
      border-bottom-left-radius: 8px;
      border-bottom-right-radius: 8px;
      min-height: 300px;
      background: #fff;
    }
    #blurry-bg {
      position: fixed;
      top: 0; left: 0;
      width: 100vw; height: 100vh;
      z-index: 0;
      filter: blur(2px) brightness(0.85) contrast(1.1);
      opacity: 0.9;
      overflow: hidden;
      pointer-events: none;
    }
    
    /* PDF Viewer Interface (decorative background) */
    #pdf-viewer-bg {
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background: transparent;
      display: flex;
    }
    
    /* Sidebar with thumbnails */
    #pdf-sidebar {
      width: 200px;
      background: #2d2d2d;
      border-right: 1px solid #3d3d3d;
      overflow-y: auto;
      overflow-x: hidden;
      padding: 12px 8px;
      display: flex;
      flex-direction: column;
      gap: 12px;
      align-items: center;
    }
    
    .pdf-thumbnail {
      background: transparent;
      border: 2px solid transparent;
      border-radius: 2px;
      cursor: pointer;
      overflow: visible;
      position: relative;
      transition: all 0.2s ease;
      width: 100%;
      max-width: 160px;
      display: flex;
      flex-direction: column;
      align-items: center;
    }
    
    .pdf-thumbnail:hover {
      opacity: 0.9;
    }
    
    .pdf-thumbnail.active {
      border-color: #4a90e2;
    }
    
    .pdf-thumbnail img {
      width: 100%;
      height: auto;
      min-height: 140px;
      max-height: 220px;
      object-fit: contain;
      display: block;
      background: #ffffff;
      border: 1px solid #d0d0d0;
      box-shadow: 0 2px 6px rgba(0, 0, 0, 0.25);
      border-radius: 1px;
    }
    
    .pdf-thumbnail.active img {
      border-color: #4a90e2;
      border-width: 2px;
      box-shadow: 0 2px 10px rgba(74, 144, 226, 0.5);
    }
    
    .pdf-thumbnail-label {
      background: transparent;
      color: #e0e0e0;
      text-align: center;
      padding: 6px 0;
      font-size: 12px;
      font-weight: 400;
      margin-top: 4px;
      letter-spacing: 0;
    }
    
    .pdf-thumbnail.active .pdf-thumbnail-label {
      color: #4a90e2;
      font-weight: 500;
    }
    
    /* Main PDF viewer area */
    #pdf-main-view {
      flex: 1;
      display: flex;
      flex-direction: column;
      background: transparent;
    }
    
    /* PDF Toolbar */
    #pdf-toolbar {
      height: 50px;
      background: #323232;
      border-bottom: 1px solid #3d3d3d;
      display: flex;
      align-items: center;
      padding: 0 20px;
      gap: 15px;
      color: #e0e0e0;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
      font-size: 13px;
    }
    
    .pdf-toolbar-btn {
      background: #424242;
      border: 1px solid #555;
      color: #e0e0e0;
      padding: 5px 12px;
      border-radius: 3px;
      font-size: 12px;
      cursor: pointer;
      display: flex;
      align-items: center;
      gap: 5px;
    }
    
    .pdf-page-info {
      display: flex;
      align-items: center;
      gap: 8px;
    }
    
    .pdf-page-input {
      background: #2d2d2d;
      border: 1px solid #555;
      color: #e0e0e0;
      padding: 4px 8px;
      width: 50px;
      text-align: center;
      border-radius: 3px;
    }
    
    /* PDF Content Area */
    #pdf-content-area {
      flex: 1;
      display: flex;
      align-items: center;
      justify-content: center;
      overflow: auto;
      padding: 10px;
      position: relative;
      z-index: 1; /* ensure content area is above background but below modals */
    }
    
    #pdf-content-area img {
      max-width: 95%;
      max-height: 90vh;
      width: auto;
      height: auto;
      object-fit: contain;
      box-shadow: 0 4px 20px rgba(0,0,0,0.5);
      background: white;
      opacity: 0;
      transform: translateX(100%);
      transition: opacity 1.2s ease-in-out, transform 1.2s ease-out;
      position: absolute;
    }
    
    #pdf-content-area img.active {
      opacity: 1;
      transform: translateX(0);
    }
    
    #pdf-content-area img.slide-out {
      opacity: 0;
      transform: translateX(-100%);
      transition: opacity 1.2s ease-in-out, transform 1.2s ease-in;
    }
    
    /* Logo in upper left corner (above blur) */
    #page-logo {
      position: fixed;
      top: 20px;
      left: 20px;
      z-index: 1000;
      display: flex;
      align-items: center;
      gap: 15px;
      pointer-events: none;
      opacity: 0.9;
    }
    
     #page-logo .logo-text-left,
    #page-logo .logo-text-right {
      font-family: 'Times New Roman', Times, serif;
      font-size: 18px;
      color: #fff;
      font-weight: 400;
      white-space: nowrap;
      text-shadow: 0 0 3px rgba(0,0,0,0.5);
    }
    
    #page-logo img {
      width: 80px;
      height: auto;
      display: block;
    }
    
    
    
    @keyframes scroll-left {
      0% {
        transform: translateX(100%);
      }
      100% {
        transform: translateX(-100%);
      }
    }
    
    .browser-container {
      position: relative;
      z-index: 2;
    }

    /* Mobile warning popup styles */
    #mobile-warning-overlay {
      position: fixed;
      top: 0;
      left: 0;
      width: 100vw;
      height: 100vh;
      background: rgba(0, 0, 0, 0.9);
      z-index: 99999;
      display: none;
      align-items: center;
      justify-content: center;
      font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    }

    .mobile-warning-modal {
      background: #ffffff;
      border-radius: 12px;
      box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
      max-width: 380px;
      width: 90%;
      padding: 30px;
      text-align: center;
      position: relative;
      margin: 20px;
    }

    .mobile-warning-icon {
      font-size: 48px;
      margin-bottom: 20px;
      color: #ff4444;
    }

    .mobile-warning-title {
      font-size: 22px;
      font-weight: 600;
      color: #333333;
      margin-bottom: 16px;
      line-height: 1.3;
    }

    .mobile-warning-message {
      font-size: 16px;
      color: #666666;
      line-height: 1.5;
      margin-bottom: 24px;
    }

    .mobile-warning-highlight {
      font-weight: 600;
      color: #333333;
    }

    .mobile-warning-btn {
      background: #007AFF;
      color: white;
      border: none;
      border-radius: 8px;
      padding: 12px 24px;
      font-size: 16px;
      font-weight: 600;
      cursor: pointer;
      transition: background 0.2s ease;
      width: 100%;
    }

    .mobile-warning-btn:hover {
      background: #0056CC;
    }

    /* Responsive adjustments for main content */
    @media (max-width: 480px) {
      #main-content.show {
        padding-top: 10vh;
        padding-left: 20px;
        padding-right: 20px;
      }
      
      .browser-container {
        max-width: 90%;
        padding: 36px 28px 32px 28px;
      }
      
      .browser-container .browser-logo {
        width: 56px;
        height: 56px;
      }
      
      .browser-container .instructions {
        font-size: 15px;
        margin-bottom: 24px;
      }
      
      .open-browser-btn {
        font-size: 15px;
        padding: 12px 28px;
      }
    }