* { box-sizing: border-box; }
body {
    margin: 0;
    padding: 2rem;
    font-family: -apple-system, system-ui, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
    background: #f8f9fa;
    color: #454d5d;
    font-size: 16px;
}
h1 { color: #242931; margin: 0 0 4px 0; font-size: 3rem; font-weight: 700; }
.subtitle { color: rgba(36, 41, 49, 0.8); margin: 0 0 12px 0; font-size: 14px; font-weight: 300; }

#cy {
    width: 100%;
    height: 65vh;
    border: 1px solid rgba(172, 179, 194, 0.2);
    border-radius: 2px;
    background: #fff;
    box-shadow: 0 10px 45px -9px rgba(0, 0, 0, 0.1);
}

.controls {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    align-items: center;
    margin: 12px 0;
    padding: 12px;
    background: #fff;
    border-radius: 2px;
    box-shadow: 0 10px 45px -9px rgba(0, 0, 0, 0.1);
}
.controls .separator {
    width: 1px;
    height: 28px;
    background: rgba(172, 179, 194, 0.2);
    margin: 0 4px;
}

button {
    padding: 8px 14px;
    background: #3085EE;
    color: #fff;
    border: 1px solid #227ded;
    border-radius: 2px;
    cursor: pointer;
    font-size: 13px;
    transition: all 0.5s ease;
}
button:hover { background: #1877ec; border-color: #1370e3; }
button:disabled { background: #e7e9ed; cursor: not-allowed; color: #acb3c2; border-color: #e7e9ed; }
button.primary { background: #32b643; border-color: #2faa3f; }
button.primary:hover { background: #2a9a39; border-color: #278f34; }
button.secondary { background: #ffb700; border-color: #e6a500; color: #242931; }
button.secondary:hover { background: #e6a500; border-color: #cc9200; }
button.settings-btn { background: #667189; border-color: #5b6578; }
button.settings-btn:hover { background: #5b6578; border-color: #505868; }

.status-bar {
    padding: 10px 14px;
    background: #fff;
    border-radius: 2px;
    margin-bottom: 10px;
    font-size: 13px;
    display: flex;
    align-items: center;
    gap: 12px;
    border: 1px solid rgba(172, 179, 194, 0.2);
    color: #454d5d;
}
.status-bar .status-text { flex: 1; }
.progress-container {
    width: 200px;
    height: 6px;
    background: #e7e9ed;
    border-radius: 3px;
    overflow: hidden;
    display: none;
}
.progress-bar {
    height: 100%;
    background: #3085EE;
    border-radius: 3px;
    transition: width 0.3s;
    width: 0%;
}

.settings-panel {
    display: none;
    padding: 15px;
    background: #fff;
    border-radius: 2px;
    margin-bottom: 10px;
    box-shadow: 0 10px 45px -9px rgba(0, 0, 0, 0.1);
    border: 1px solid rgba(172, 179, 194, 0.2);
}
.settings-panel.visible { display: block; }
.settings-panel label {
    display: block;
    margin: 8px 0 4px;
    font-size: 13px;
    color: #667189;
}
.settings-panel input {
    width: 100%;
    padding: 8px;
    background: #fff;
    border: 1px solid rgba(172, 179, 194, 0.4);
    border-radius: 2px;
    color: #454d5d;
    font-family: monospace;
    font-size: 13px;
}
.settings-panel input:focus {
    outline: none;
    border-color: #3085EE;
}

.info {
    background: #fff;
    padding: 15px;
    border-radius: 2px;
    margin-top: 12px;
    border-left: 4px solid #3085EE;
    font-size: 13px;
    box-shadow: 0 10px 45px -9px rgba(0, 0, 0, 0.1);
}
.info h3 { margin: 0 0 8px 0; color: #242931; }
.info p { margin: 4px 0; color: #667189; }

.node-info {
    display: none;
    position: fixed;
    bottom: 20px;
    right: 20px;
    background: #fff;
    border: 1px solid rgba(172, 179, 194, 0.2);
    border-radius: 2px;
    padding: 15px;
    min-width: 250px;
    max-width: 350px;
    font-size: 13px;
    z-index: 100;
    box-shadow: 0 10px 45px -9px rgba(0, 0, 0, 0.1);
}
.node-info.visible { display: block; }

a.nav-switch {
    padding: 8px 14px;
    background: #454d5d;
    color: #fff;
    border: 1px solid #3a4250;
    border-radius: 2px;
    cursor: pointer;
    font-size: 13px;
    text-decoration: none;
    transition: all 0.5s ease;
    white-space: nowrap;
}
a.nav-switch:hover { background: #3a4250; border-color: #2f3540; }
.node-info h4 { margin: 0 0 8px 0; color: #242931; }
.node-info .field { margin: 4px 0; }
.node-info .field .key { color: #acb3c2; }
.node-info .field .value { color: #454d5d; }
.node-info .address {
    font-family: monospace;
    font-size: 11px;
    word-break: break-all;
    color: #3085EE;
    margin-top: 4px;
}