@media (max-width:600px){.square{width:100%!important;height:100%!important;margin:0!important;padding:0!important}#board_unique .rank-label,#board_unique .file-label{opacity:1!important;position:absolute!important;font-size:10px!important;font-weight:700!important;color:#333!important;pointer-events:none!important;z-index:20!important}#board_unique .rank-label{left:-20px!important;top:calc(( 100% / 8 ) * var(--rank-index) + ( 100% / 16 ))!important;transform:translateY(-50%)!important}#board_unique .file-label{bottom:-17px!important;left:calc(( 100% / 8 ) * var(--file-index) + ( 100% / 16 ))!important;transform:translateX(-50%)!important}body.dark-mode #board_unique .rank-label,body.dark-mode #board_unique .file-label{color:#fff!important}}@media (min-width:601px){#board_unique .rank-label,#board_unique .file-label{opacity:1!important;width:auto!important;height:auto!important;position:absolute!important;z-index:20}}.last-move{position:absolute;width:100%;height:100%;box-sizing:border-box;border:3px solid #f2d13b;border-radius:6px;pointer-events:none;z-index:9}body.dark-mode #board_unique .highlight{border-color:#ff3b30!important}body.dark-mode #container_unique h1{font-family:"Segoe UI",Tahoma,Geneva,Verdana,sans-serif;font-size:2rem;font-weight:600;text-transform:uppercase;color:#fff;margin-bottom:20px;padding:8px 20px;border-radius:12px;background:linear-gradient(145deg,#5f8030,#3c6e31);box-shadow:0 4px 10px rgba(0,0,0,.5),inset 0 -2px 6px rgba(255,255,255,.2);text-align:center;text-shadow:1px 1px 3px rgba(0,0,0,.5)}body.dark-mode{background:#222!important;color:#f0f0f0!important}body.dark-mode #container_unique{background:#222;color:#f0f0f0}.dark-mode .square.light{background-color:#779952}.dark-mode .square.dark{background-color:#3c6e31}.dark-mode h1,.dark-mode .rank-label,.dark-mode .file-label{color:#ddd}.dark-mode #evalBar_unique{background:#444;border-color:#333}.dark-mode #evalText_unique{color:#ddd}.dark-mode button:not(.donate-btn){color:#fff}.dark-mode #turnIndicator_unique{background:linear-gradient(145deg,#444,#333);border-color:#555}.dark-mode #statusText_unique{color:#ddd}.square{width:60px;height:60px;display:flex;justify-content:center;align-items:center;position:relative}.light{background-color:#f0d9b5}.dark{background-color:#b58863}.square .in-check,.square .checkmate{position:absolute;inset:0;width:100%;height:100%;pointer-events:none;z-index:12}.in-check{background-color:rgba(255,0,0,.6)!important;animation:checkFlash .8s infinite}.checkmate{background-color:rgba(255,0,0,.9)!important}.highlight{position:absolute;width:100%;height:100%;box-sizing:border-box;pointer-events:none;border:3px solid green;border-radius:6px}.legal-move{position:absolute;width:20px;height:20px;background-color:rgba(0,0,0,.3);border-radius:50%;pointer-events:none;z-index:10}.dark-mode .eval-marker{color:#ddd}.dark-mode #promotionModal_unique{background:#333;border-color:#555}#promotionModal_unique .pieceSlot{margin:5px}.rank-label,.file-label{position:absolute;font-size:12px;font-weight:700;color:#333;pointer-events:none;z-index:5}.rank-label{width:20px;text-align:center;left:-10px;transform:translateY(-50%)}.file-label{height:15px;text-align:center;bottom:-20px;transform:translateX(-50%)}.dark-mode .donate-btn{background:linear-gradient(135deg,#ff6a00,#ff3b30)!important;color:#fff!important}.donate-link.secondary{background:#fff;color:#333;border-color:#ddd}.dark-mode #donateModal_unique .donate-card{background:#2c2c2c;color:#eee;border-color:#444}.dark-mode #donateModal_unique .donate-link.secondary{background:#2c2c2c;color:#eee;border-color:#666}.btn-green{background:linear-gradient(135deg,#34c759,#28a745)!important}.btn-amber{background:linear-gradient(135deg,#ffb300,#ff8f00)!important;color:#332!important}.btn-teal{background:linear-gradient(135deg,#30d0c6,#11998e)!important}#controls_unique button.btn-green:hover,#fenControls_unique button.btn-green:hover{background:linear-gradient(135deg,#3ee06a,#2dbf52)!important}#controls_unique button.btn-amber:hover,#fenControls_unique button.btn-amber:hover{background:linear-gradient(135deg,#ffc233,#ffa31a)!important;color:#332!important}#controls_unique button.btn-teal:hover,#fenControls_unique button.btn-teal:hover{background:linear-gradient(135deg,#4ce2d7,#18b3a6)!important}