:root { 
    --bg-main: #050505;
    --panel-bg: rgba(15, 10, 10, 0.45);
    --panel-border: rgba(255, 255, 255, 0.08);
    --text-primary: #ffffff;
    --text-value: #eee;
    --accent: #ef4444; 
    --accent-glow: rgba(239, 68, 68, 0.4);
    --btn-secondary-bg: rgba(255, 255, 255, 0.05);
    --btn-control-bg: rgba(0, 0, 0, 0.5);
    --btn-control-color: #ffffff;
    --graph-shadow: rgba(0,0,0,0.5);
}

/* Structural Light Mode Inversion Profiles */
body.light-theme {
    --bg-main: #f3f4f6;
    --panel-bg: rgba(249, 250, 251, 0.65);
    --panel-border: rgba(0, 0, 0, 0.08);
    --text-primary: #111827;
    --text-value: #1f2937;
    --accent: #dc2626;
    --accent-glow: rgba(220, 38, 38, 0.2);
    --btn-secondary-bg: rgba(0, 0, 0, 0.05);
    --btn-control-bg: rgba(255, 255, 255, 0.8);
    --btn-control-color: #374151;
    --graph-shadow: rgba(0,0,0,0.08);
}

body { margin: 0; background: var(--bg-main); color: var(--text-primary); font-family: 'Inter', sans-serif; overflow: hidden; transition: background 0.3s ease, color 0.3s ease; }
#canvas-container { width: 100vw; height: 100vh; position: absolute; top:0; left:0; z-index: 1; }

.fps-hud {
    position: absolute; top: 30px; right: 30px;
    background: var(--panel-bg); backdrop-filter: blur(15px); -webkit-backdrop-filter: blur(15px);
    padding: 10px 20px; border-radius: 12px; border: 1px solid var(--panel-border);
    font-family: 'JetBrains Mono', monospace; font-size: 0.8rem; font-weight: 700;
    color: #4ade80; text-shadow: 0 0 8px rgba(74, 222, 128, 0.5);
    z-index: 9999; pointer-events: none; letter-spacing: 0.05rem;
    box-shadow: 0 10px 30px var(--graph-shadow);
    transition: all 0.3s ease;
}

/* Live Telemetry Data Graph Layout Frame */
.graph-container {
    position: absolute; bottom: 30px; right: 30px;
    background: var(--panel-bg); backdrop-filter: blur(25px); -webkit-backdrop-filter: blur(25px);
    padding: 16px; border-radius: 20px; border: 1px solid var(--panel-border);
    box-shadow: 0 20px 50px var(--graph-shadow);
    z-index: 9999; pointer-events: none;
    transition: all 0.3s ease;
}
#telemetryGraph { display: block; border-radius: 8px; background: rgba(0, 0, 0, 0.2); }

.control-panel { 
    position: absolute; top: 30px; left: 30px; width: 320px; 
    background: var(--panel-bg); backdrop-filter: blur(25px); -webkit-backdrop-filter: blur(25px);
    padding: 24px; border-radius: 24px; border: 1px solid var(--panel-border); 
    box-shadow: 0 30px 60px var(--graph-shadow), inset 0 1px 1px rgba(255,255,255,0.1);
    z-index: 9999;
    transition: all 0.3s ease;
}

.header-container { margin-bottom: 25px; border-bottom: 1px solid var(--panel-border); padding-bottom: 15px; }
.brand { font-size: 1.6rem; font-weight: 200; letter-spacing: 0.25rem; }
.brand .accent-text { font-weight: 700; color: var(--accent); text-shadow: 0 0 10px var(--accent-glow); }
.sub-brand { font-family: 'JetBrains Mono', monospace; font-size: 0.55rem; color: #777; letter-spacing: 0.1rem; margin-top: 5px; }

.status-group { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin: 20px 0; }
.status-item { background: rgba(0,0,0,0.25); padding: 10px; border-radius: 12px; border: 1px solid var(--panel-border); text-align: center; }
.label { font-size: 0.55rem; color: #888; text-transform: uppercase; display: block; margin-bottom: 4px; letter-spacing: 0.05rem; }
.value { font-size: 0.8rem; font-weight: 700; font-family: 'JetBrains Mono', monospace; color: var(--text-value); }

.btn, .btn-secondary, .btn-control, .btn-theme-toggle { 
    position: relative; overflow: hidden; cursor: pointer; 
    border: 1px solid var(--panel-border); 
    color: var(--text-primary); transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1); 
    border-radius: 12px; font-family: 'Inter', sans-serif;
}
.btn { width: 100%; padding: 14px; border: none; font-weight: 600; margin-bottom: 10px; background: var(--accent); color: #fff; box-shadow: 0 4px 12px var(--accent-glow); }
.btn:hover { background: #f87171; transform: translateY(-1px); box-shadow: 0 6px 20px var(--accent-glow); }

.btn-secondary { width: 100%; padding: 14px; margin-bottom: 10px; color: var(--text-value); background: var(--btn-secondary-bg); }
.btn-secondary:hover { background: rgba(255, 255, 255, 0.12); border-color: rgba(255, 255, 255, 0.2); }

.playback-controls { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 8px; margin-top: 15px; }
.btn-control { padding: 10px; border-radius: 8px; font-family: 'JetBrains Mono', monospace; font-size: 0.75rem; color: var(--btn-control-color); background: var(--btn-control-bg); font-weight: 700; }
.btn-control:hover { background: rgba(255, 255, 255, 0.1); border-color: rgba(255, 255, 255, 0.3); }
.btn-control.active { background: rgba(239, 68, 68, 0.2); border-color: var(--accent); color: var(--accent); text-shadow: 0 0 8px var(--accent-glow); box-shadow: 0 0 12px rgba(239, 68, 68, 0.25); }

/* Theme Configuration Control Element */
.btn-theme-toggle { width: 100%; padding: 10px; margin-top: 12px; font-size: 0.7rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.05rem; background: var(--btn-secondary-bg); color: var(--text-value); border-radius: 8px; }
.btn-theme-toggle:hover { background: rgba(128,128,128,0.15); }

.telemetry-panel { background: rgba(0,0,0,0.3); border-radius: 12px; padding: 12px; margin-top: 15px; border: 1px solid var(--panel-border); }
.log { font-family: 'JetBrains Mono', monospace; font-size: 0.7rem; color: var(--accent); height: 20px; overflow: hidden; text-shadow: 0 0 4px var(--accent-glow); }

.footer-attribution { margin-top: 24px; padding-top: 15px; border-top: 1px solid var(--panel-border); font-family: 'JetBrains Mono', monospace; font-size: 0.55rem; color: #666; text-align: center; letter-spacing: 0.05rem; }
.footer-attribution .highlight { color: #888; font-weight: 700; transition: color 0.3s; }
.control-panel:hover .footer-attribution .highlight { color: var(--accent); text-shadow: 0 0 8px var(--accent-glow); }

.recording { background: #dc2626 !important; animation: pulse-panel 1.5s infinite ease-in-out; }
@keyframes pulse