:root {
    --bg-color: #060913;
    --card-bg: rgba(15, 23, 42, 0.75);
    --border-color: rgba(56, 189, 248, 0.2);
    --border-highlight: rgba(56, 189, 248, 0.45);
    --accent-cyan: #38bdf8;
    --accent-purple: #c084fc;
    --accent-green: #4ade80;
    --accent-amber: #fbbf24;
    --accent-pink: #f472b6;
    --text-color: #f8fafc;
    --text-muted: #94a3b8;
    --font-sans: 'Outfit', sans-serif;
    --font-mono: 'Fira Code', monospace;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: var(--font-sans);
    min-height: 100vh;
    padding: 2rem 1.5rem;
    position: relative;
    overflow-x: hidden;
    background-image: radial-gradient(circle at 50% 0%, rgba(56, 189, 248, 0.08) 0%, rgba(6, 9, 19, 1) 70%);
}

/* Radar Grid Background */
.grid-bg {
    position: fixed;
    top: 0; left: 0; width: 100%; height: 100%;
    background-image: linear-gradient(rgba(56, 189, 248, 0.04) 1px, transparent 1px), linear-gradient(90deg, rgba(56, 189, 248, 0.04) 1px, transparent 1px);
    background-size: 40px 40px;
    pointer-events: none;
    z-index: 0;
}

.container {
    max-width: 1140px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 1.25rem;
    margin-bottom: 2rem;
    backdrop-filter: blur(12px);
}

.brand h1 {
    font-size: 2rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    background: linear-gradient(135deg, #ffffff 0%, var(--accent-cyan) 60%, var(--accent-purple) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.status-badge {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(74, 222, 128, 0.12);
    color: var(--accent-green);
    border: 1px solid rgba(74, 222, 128, 0.3);
    padding: 0.35rem 0.9rem;
    border-radius: 20px;
    font-family: var(--font-mono);
    font-size: 0.82rem;
    font-weight: 700;
}

.pulse-dot {
    width: 8px; height: 8px; border-radius: 50%; background: var(--accent-green);
    box-shadow: 0 0 12px var(--accent-green);
    animation: pulse 2s infinite;
}

@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.3; } }

/* Explanation Box */
.explanation-card {
    background: rgba(15, 23, 42, 0.6);
    border: 1px solid var(--border-color);
    border-radius: 14px;
    padding: 1.25rem 1.5rem;
    margin-bottom: 2rem;
    backdrop-filter: blur(12px);
    font-size: 0.95rem;
    line-height: 1.6;
    color: var(--text-muted);
}

.explanation-card strong {
    color: var(--text-color);
}

/* Gauges Grid */
.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.gauge-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 1.5rem;
    backdrop-filter: blur(16px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
    transition: all 0.3s ease;
}

.gauge-card:hover {
    border-color: var(--border-highlight);
    transform: translateY(-2px);
}

.gauge-label {
    font-size: 0.82rem;
    color: var(--text-muted);
    font-family: var(--font-mono);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.75rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.gauge-val {
    font-size: 2rem;
    font-weight: 800;
    font-family: var(--font-mono);
    color: var(--accent-cyan);
    margin-bottom: 0.65rem;
}

.progress-bar {
    height: 6px;
    background: rgba(255, 255, 255, 0.08);
    border-radius: 3px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--accent-cyan), var(--accent-purple));
    border-radius: 3px;
}

/* Radar HUD Visualizer Container */
.radar-box {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 18px;
    padding: 2rem;
    backdrop-filter: blur(16px);
    margin-bottom: 2rem;
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.5);
}

.radar-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
}

.radar-header h3 {
    font-size: 1.15rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.radar-content {
    display: grid;
    grid-template-columns: 320px 1fr;
    gap: 2rem;
    align-items: flex-start;
}

canvas#radar-canvas {
    width: 100%;
    height: 300px;
    display: block;
}

/* Node Details Panel & Legend */
.legend-panel h4 {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--text-color);
    margin-bottom: 1rem;
    font-family: var(--font-mono);
    text-transform: uppercase;
}

.legend-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
}

.legend-item {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 0.75rem 1rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 0.88rem;
    cursor: pointer;
    transition: all 0.25s ease;
}

.legend-item:hover, .legend-item.active {
    border-color: var(--accent-cyan);
    background: rgba(56, 189, 248, 0.12);
    box-shadow: 0 0 15px rgba(56, 189, 248, 0.15);
    transform: translateX(4px);
}

.legend-tag {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 600;
}

.node-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    flex-shrink: 0;
}

.node-status {
    font-family: var(--font-mono);
    font-size: 0.78rem;
    color: var(--accent-green);
}

/* Service Inspector Card */
.inspector-card {
    background: rgba(11, 15, 25, 0.85);
    border: 1px solid var(--border-highlight);
    border-radius: 14px;
    padding: 1.5rem;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    transition: all 0.3s ease;
}

.inspector-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 1rem;
    padding-bottom: 0.85rem;
    border-bottom: 1px solid var(--border-color);
}

.inspector-title-group {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.inspector-icon-dot {
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: #4ade80;
    box-shadow: 0 0 12px #4ade80;
    flex-shrink: 0;
}

.inspector-title-group h4 {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--text-color);
    line-height: 1.3;
}

.inspector-subdomain {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--accent-cyan);
    margin-top: 0.15rem;
}

.inspector-status-badge {
    background: rgba(74, 222, 128, 0.15);
    color: var(--accent-green);
    border: 1px solid rgba(74, 222, 128, 0.35);
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-family: var(--font-mono);
    font-size: 0.78rem;
    font-weight: 700;
    white-space: nowrap;
}

.inspector-desc {
    font-size: 0.9rem;
    color: var(--text-muted);
    line-height: 1.6;
    margin-bottom: 1.2rem;
}

.inspector-meta-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-bottom: 1.2rem;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 0.75rem 1rem;
}

.inspector-meta-item .meta-label {
    display: block;
    font-size: 0.72rem;
    font-family: var(--font-mono);
    color: var(--text-muted);
    text-transform: uppercase;
    margin-bottom: 0.2rem;
}

.inspector-meta-item .meta-val {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-color);
}

.inspector-metrics-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0.75rem;
    margin-bottom: 1.2rem;
}

.metric-box {
    background: rgba(20, 27, 44, 0.6);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 0.65rem 0.85rem;
    text-align: center;
}

.metric-box .m-val {
    font-size: 1.1rem;
    font-weight: 800;
    font-family: var(--font-mono);
    color: var(--accent-cyan);
}

.metric-box .m-lbl {
    font-size: 0.7rem;
    color: var(--text-muted);
    margin-top: 0.15rem;
}

.btn-inspector {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    background: linear-gradient(135deg, rgba(56, 189, 248, 0.2), rgba(192, 132, 252, 0.15));
    border: 1px solid var(--border-highlight);
    color: var(--text-color);
    padding: 0.65rem 1.2rem;
    border-radius: 10px;
    text-decoration: none;
    font-size: 0.88rem;
    font-weight: 600;
    transition: all 0.25s ease;
    width: 100%;
}

.btn-inspector:hover {
    background: var(--accent-cyan);
    color: #0b0f19;
    box-shadow: 0 4px 15px rgba(56, 189, 248, 0.35);
}

footer { text-align: center; font-size: 0.85rem; color: var(--text-muted); margin-top: 2rem; }
footer a { color: var(--accent-cyan); text-decoration: none; font-weight: 600; }

@media (max-width: 900px) {
    .radar-content { grid-template-columns: 1fr; }
    .inspector-meta-row { grid-template-columns: 1fr; }
    .inspector-metrics-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 640px) {
    header { flex-direction: column; align-items: flex-start; gap: 0.75rem; }
    .brand h1 { font-size: 1.6rem; }
    .gauge-val { font-size: 1.6rem; }
    .radar-box { padding: 1.25rem 1rem; }
    .radar-header { flex-direction: column; align-items: flex-start; gap: 0.35rem; }
    .legend-item { flex-direction: column; align-items: flex-start; gap: 0.35rem; }
}