.single-post img:first-of-type{max-width:600px;height:auto;display:block;margin:0 auto 20px}.reading-time{background-color:#f0f4f8;border-left:4px solid #0073aa;padding:10px 15px;border-radius:8px;font-size:1rem;font-style:italic;color:#222;margin-bottom:20px;text-align:right}.dark-mode-btn{position:fixed;bottom:20px;right:20px;background:#222;color:white;border:none;padding:10px 15px;border-radius:8px;cursor:pointer;font-size:14px;z-index:9999;transition:background 0.3s ease,color 0.3s ease}.dark-mode-btn:hover{background:#444}.dark-mode-btn{position:fixed;bottom:20px;right:20px;background:#222;color:white;border:none;padding:10px 15px;border-radius:8px;cursor:pointer;font-size:14px;z-index:9999;box-shadow:0 2px 6px rgba(0,0,0,0.3)}.dark-mode-btn:hover{background:#444}body.dark-mode{background-color:#121212!important;color:#eaeaea!important}body.dark-mode a{color:#80c8ff!important}body.dark-mode .et_pb_section,body.dark-mode .et_pb_post,body.dark-mode .et_pb_row,body.dark-mode .et_pb_module{background-color:#1e1e1e!important;color:#eaeaea!important}body.dark-mode h1,body.dark-mode h2,body.dark-mode h3,body.dark-mode h4,body.dark-mode h5,body.dark-mode h6{color:#ffffff!important}body.dark-mode #main-header,body.dark-mode #top-header{background-color:#181818!important}body.dark-mode #top-menu li a{color:#eaeaea!important}body.dark-mode #main-footer{background-color:#181818!important;color:#ccc!important}