#app{font-family:Avenir,Helvetica,Arial,sans-serif;margin:0;padding:0;box-sizing:border-box;background-color:#f2f2f2}.navbar{display:flex;justify-content:space-between;align-items:center;padding:1em 2em;background-color:#fff;border-bottom:1px solid #eee}.navbar-logo h1{margin:0;font-size:1.5em;color:#333}.navbar-buttons{display:flex;align-items:center;gap:1em}.connect-wallet-button{padding:.5em 1em;font-size:1em;color:#fff;background-color:#d4af37;border:none;border-radius:5px;cursor:pointer;transition:background-color .3s,box-shadow .3s}.connect-wallet-button:hover{background-color:#b68b2f;box-shadow:0 4px 6px rgba(0,0,0,.1)}.eth-balance,.wallet-address{font-size:1em;color:#333;padding:.5em 1em;background-color:#f8f9fa;border-radius:5px}.game-container{max-width:1000px;margin:3em auto;background-color:#fff;padding:3em;border-radius:15px;box-shadow:0 6px 15px rgba(0,0,0,.2)}.gif-container{display:flex;justify-content:center;margin:1.5em 0}.coinflip-gif{max-width:100%;height:auto;border-radius:10px}.main-content{text-align:center}.instructions{text-align:left;display:inline-block;margin:1em auto;font-size:1em;line-height:1.5;color:#555}.play-options{margin-top:2em}.amounts,.choices{display:flex;flex-direction:column;gap:1em;align-items:center}.amounts .row{display:flex;gap:.5em}.spacer{height:1.5em}.action-button,.amount-button,.choice-button{padding:.5em 1em;font-size:1em;color:#fff;background-color:#d4af37;border:none;border-radius:5px;cursor:pointer;transition:background-color .3s,box-shadow .3s}.amount-button.selected,.choice-button.selected{background-color:#6c757d;color:#fff}.action-button:hover,.amount-button:hover,.choice-button:hover{background-color:#b68b2f;box-shadow:0 4px 6px rgba(0,0,0,.1)}