:root{--primary:#1a73e8;--bg:#f8f9fa;--card:#fff;--text:#1f2937;--error:#dc2626;--success:#059669}*{box-sizing:border-box;margin:0;padding:0}body{background:var(--bg);color:var(--text);padding:16px;font-family:-apple-system,BlinkMacSystemFont,system-ui,sans-serif}main{max-width:480px;margin:0 auto}.card{background:var(--card);border-radius:12px;margin-bottom:16px;padding:20px;box-shadow:0 1px 3px #00000014}button{cursor:pointer;border:none;border-radius:8px;width:100%;padding:14px;font-size:16px;font-weight:600}button.primary{background:var(--primary);color:#fff}button.primary:disabled{opacity:.6;cursor:not-allowed}button.secondary{color:var(--text);background:#e5e7eb}input{border:1px solid #d1d5db;border-radius:8px;width:100%;padding:12px;font-size:16px}.balance{color:var(--success);font-size:28px;font-weight:700}.machine-name{font-size:22px;font-weight:600}.price{color:var(--primary);font-size:36px;font-weight:700}.error{color:var(--error);margin-top:8px}.status{border-radius:6px;margin-top:12px;padding:10px;font-weight:500}.status.running{color:#1e40af;background:#dbeafe}.status.warning{color:#92400e;background:#fef3c7}.status.completed{color:#065f46;background:#d1fae5}.status.failed{color:#991b1b;background:#fee2e2}