:root{font-family:system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400;color:#213547;background-color:#fff;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}a{font-weight:500;color:#646cff;text-decoration:inherit}a:hover{color:#535bf2}body{margin:0;display:flex;justify-content:center;min-width:320px;min-height:100vh}#root{width:100%;max-width:1280px;margin:0 auto;padding:2rem;text-align:center}h1{font-size:2.5em;line-height:1.1;color:#333}button{border-radius:8px;border:1px solid transparent;padding:.6em 1.2em;font-size:1em;font-weight:500;font-family:inherit;background-color:#f9f9f9;cursor:pointer;transition:border-color .25s}button:hover{border-color:#646cff}button:focus,button:focus-visible{outline:4px auto -webkit-focus-ring-color}.App{display:flex;flex-direction:column;align-items:center;justify-content:center;max-width:800px;margin:0 auto;padding:20px;text-align:center}h1{color:#333;margin-bottom:30px}.playing-card{position:relative;width:240px;height:336px;margin:20px auto;perspective:1000px;cursor:pointer}.card-inner{position:relative;width:100%;height:100%;transition:transform .8s;transform-style:preserve-3d;box-shadow:0 4px 8px #0003;border-radius:12px}.playing-card.flipped .card-inner{transform:rotateY(180deg)}.card-front,.card-back{position:absolute;width:100%;height:100%;backface-visibility:hidden;border-radius:12px;box-sizing:border-box}.card-front{background-color:#fff;font-family:serif;padding:16px;display:flex;flex-direction:column;justify-content:space-between}.card-back{background-color:#1e5799;background:linear-gradient(135deg,#1e5799,#2989d8 50%,#207cca 51%,#7db9e8);transform:rotateY(180deg);border:8px solid white}.card-corner{position:absolute;display:flex;flex-direction:column;align-items:center}.card-corner.top-left{top:10px;left:10px}.card-corner.bottom-right{bottom:10px;right:10px;transform:rotate(180deg)}.card-suit{font-size:28px;line-height:1}.card-value{font-size:24px;font-weight:700;line-height:1}.card-center{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:80%;font-size:24px;line-height:1.2;display:flex;flex-direction:column;align-items:center;justify-content:center}.card-center:not(:has(.exercise-content)){font-size:80px}.card-back:after{content:"";position:absolute;top:4px;right:4px;bottom:4px;left:4px;background-image:repeating-linear-gradient(45deg,#ffffff1a,#ffffff1a 10px,#fff3 10px,#fff3 20px);border-radius:8px}.exercise-content{display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;width:100%;font-family:sans-serif}.exercise-type{font-size:24px;font-weight:700;margin-bottom:8px}.exercise-notes{font-size:14px;font-style:italic}.random-card-container{display:flex;flex-direction:column;align-items:center;gap:20px}.new-card-button{background-color:#4caf50;border:none;color:#fff;padding:12px 24px;text-align:center;text-decoration:none;display:inline-block;font-size:16px;margin:4px 2px;cursor:pointer;border-radius:8px;transition:background-color .3s}.new-card-button:hover{background-color:#45a049}.exercise-container{width:100%;max-width:800px;margin:20px auto;padding:16px;background-color:#fff;border-radius:8px;box-shadow:0 2px 4px #0000001a}.exercise-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px}.exercise-title{margin:0;font-size:24px;font-weight:700;color:#333}.clear-history-button{background-color:#ff4d4d;color:#fff;border:none;border-radius:4px;padding:8px 16px;font-size:14px;cursor:pointer;transition:background-color .2s}.clear-history-button:hover{background-color:#f33}.clear-history-button:active{background-color:#e60000}.exercise-table{width:100%;border-collapse:collapse;margin-top:16px}.exercise-table th,.exercise-table td{padding:12px 8px;text-align:left;border-bottom:1px solid #eee}.exercise-table th{background-color:#f5f5f5;font-weight:700;border-bottom:2px solid #ddd}.exercise-table tr:hover{background-color:#f9f9f9}.newest-exercise{background-color:#f0fff0;animation:fadeHighlight 2s ease-in-out}@keyframes fadeHighlight{0%{background-color:#90ee90}to{background-color:#f0fff0}}.exercise-loading{text-align:center;padding:20px}.exercise-empty-message{text-align:center;margin-top:20px;font-size:16px;color:#888}@media (prefers-reduced-motion: reduce){.newest-exercise{animation:none;background-color:#f0fff0}}.card-display{display:inline-flex;align-items:center;font-weight:700;font-size:1.1em;padding:4px 8px;background-color:#f9f9f9;border-radius:5px;border:1px solid #eee}.card-red{color:#d40000}.card-black{color:#000}.exercise-table td:first-child{text-align:center}