:root{--bg-color: #121212;--card-bg: #1e1e1e;--text-color: #e0e0e0;--up-color: #ef5350;--down-color: #26a69a}body{margin:0;padding:0;background-color:var(--bg-color);color:var(--text-color);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Open Sans,Helvetica Neue,sans-serif;-webkit-font-smoothing:antialiased}.app-container{display:flex;flex-direction:column;height:100vh;max-width:480px;margin:0 auto;padding:0 16px;box-sizing:border-box}.status-bar{display:flex;align-items:center;justify-content:center;padding:10px 0;font-size:12px;color:#888}.status-dot{width:8px;height:8px;border-radius:50%;margin-right:8px}.status-dot.connected{background-color:#4caf50}.status-dot.disconnected{background-color:#f44336}.main-display{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center}.symbol-header{text-align:center;margin-bottom:20px}.symbol-header h1{margin:0;font-size:28px;font-weight:700}.badge{background-color:#ff5722;color:#fff;padding:2px 8px;border-radius:4px;font-size:12px;font-weight:700}.leverage-display{font-size:32px;font-weight:700;margin-bottom:10px}.price-display{font-size:64px;font-weight:700;margin:10px 0;line-height:1}.change-display{font-size:20px;opacity:.9;margin-bottom:20px}.range-display{display:flex;gap:20px;color:#888;font-size:14px;margin-top:10px}.text-up{color:var(--up-color)}.text-down{color:var(--down-color)}.trade-actions{display:flex;gap:12px;padding-bottom:30px;margin-top:auto}.btn{flex:1;padding:16px;border:none;border-radius:8px;font-size:16px;font-weight:700;color:#fff;cursor:pointer;transition:opacity .2s}.btn:active{opacity:.8}.btn-buy-red{background-color:var(--up-color)}.btn-sell-green{background-color:var(--down-color)}.loading-text{color:#666;font-size:18px;animation:pulse 1.5s infinite}@keyframes pulse{0%{opacity:.5}50%{opacity:1}to{opacity:.5}}