/* PAGE WRAPPER */
    #my_lessons_page {
      position: relative;
      min-height: 100vh;
    }

    /* BACKDROP (transparent, non-blocking) */
    #my_modal_backdrop {
      display: none;
      position: fixed; top:0; left:0; right:0; bottom:0;
      background: transparent;
      pointer-events: none;
      z-index: 50;
    }

    /* COMMON MODAL PANEL */
    .my_modal {
      display: none;
      position: fixed; 
      top: 200px;    /* adjust under your header */
      right: 40px;  /* align over the right card */
      width: 500px;
      max-width: 90%;
      background: #fff;
      border-radius: 8px;
      box-shadow: none;
      z-index: 100;
      overflow: visible;
      font-family: system-ui, sans-serif;
      border: 1px solid;
      z-index: 99999 !important;
}
      
    
    /* HEADER (both steps) */
    .my_modal_header {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 12px 16px;
      border-bottom: 1px solid #eee;
    }
    .my_modal_header .left {
      display: flex; align-items: center;
    }
    .my_modal_header .left i {
      font-size: 1.2rem;
      margin-right: 8px;
      cursor: pointer;
    }
    .my_modal_header .left img {
      width: 32px; height: 32px;
      border-radius: 50%;
      margin-right: 8px;
    }
    .my_modal_header .left h2 {
      margin: 0; font-size: 1rem; cursor: default;
    }
    .my_modal_header .right i,
    .my_modal_header .right a {
      margin-left: 12px;
      font-size: 1.1rem;
      color: #333;
      text-decoration: none;
      display: inline-flex;
      align-items: center;
    }
    .my_modal_header .right a i {
      margin-right: 4px;
    }

    /* STEP 1 BODY */
    #send_message_body {
      padding: 12px 16px;
      background: #fafafa;
    }
    .sm_date {
      display: inline-block;
      padding: 4px 12px;
      background: #eee;
      border-radius: 12px;
      font-size: 12px;
      margin-bottom: 12px;
    }
    .sm_msg {
      display: flex; margin-bottom: 12px;
    }
    .sm_msg .avatar {
      width: 28px; height: 28px; border-radius: 50%;
      margin-right: 8px; flex-shrink: 0;
    }
    .sm_msg .content {
      background: #fff; padding: 8px 12px; border-radius: 8px;
    }
    .sm_msg .meta {
      font-size: 12px; color: #666; margin-bottom: 4px;
    }
    .sm_msg p {
      margin: 0; font-size: 14px; line-height: 1.4;
    }
    #send_message_footer {
      display: flex; align-items: center;
      padding: 10px 16px; border-top: 1px solid #eee;
    }
    #send_message_footer .icon {
      font-size: 1.2rem; color: #888; margin-right: 10px; cursor: pointer;
    }
    #send_message_footer input {
      flex: 1; padding: 8px 12px;
      border: 1px solid #ddd; border-radius: 20px;
      outline: none; font-size: 14px;
    }
    #send_message_footer .send {
      margin-left: 10px; font-size: 1.2rem; color: #444; cursor: pointer;
    }

    /* STEP 2 BODY: Messages List */
    #messages_list_body {
      padding: 12px 16px;
    }
    .msgs_tabs {
      display: flex; gap: 16px; margin-bottom: 12px;
    }
    .msgs_tabs .tab {
      position: relative; padding-bottom: 4px; cursor: pointer;
      color: #555; font-size: 14px;
    }
    .msgs_tabs .tab.active {
      color: #E63946; /* red underline */
    }
    .msgs_tabs .tab.active::after {
      content: "";
      position: absolute; left:0; right:0; bottom:0;
      height: 2px; background: #E63946;
    }
    .msgs_tabs .badge {
      background: #ddd;
      border-radius: 50%;
      padding: 2px 6px;
      font-size: 12px;
      margin-left: 4px;
    }
    .message_item {
      display: flex; align-items: center;
      padding: 8px 0; border-bottom: 1px solid #eee;
    }
    .message_item:last-child { border-bottom: none; }
    .message_item img {
      width: 36px; height: 36px; border-radius: 50%;
      margin-right: 12px;
      flex-shrink: 0;
    }
    .message_item .info {
      flex: 1;
    }
    .message_item .info h3 {
      margin: 0; font-size: 15px; color: #333;
    }
    .message_item .info p {
      margin: 4px 0 0; font-size: 13px; color: #666;
      white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
      max-width: 200px;
    }
    .message_item .date {
      font-size: 12px; color: #999;
      margin-left: 8px; white-space: nowrap;
    }