:root {
            /* Math Theme Colors */
            --color-primary: #ffb000; /* Amber */
            --color-primary-glow: rgba(255, 176, 0, 0.35);
            
            --color-opp: #ff2a85; /* Sine - Opposite (Rose/Pink) */
            --color-opp-glow: rgba(255, 42, 133, 0.35);
            
            --color-adj: #00f0ff; /* Cosine - Adjacent (Cyan) */
            --color-adj-glow: rgba(0, 240, 255, 0.35);
            
            --color-tan: #39ff14; /* Tangent (Neon Green) */
            --color-tan-glow: rgba(57, 255, 20, 0.35);
            
            --color-hyp: #ffb000; /* Hypotenuse (Amber) */
        }

        .control-label.sin-label { color: var(--color-opp); }
        .control-label.cos-label { color: var(--color-adj); }
        .control-label.tan-label { color: var(--color-tan); }
        .control-label.hyp-label { color: var(--color-hyp); }

        /* Specialized Slider Colors */
        .sin-slider::-webkit-slider-thumb { background: var(--color-opp) !important; box-shadow: 0 0 10px var(--color-opp-glow) !important; }
        .cos-slider::-webkit-slider-thumb { background: var(--color-adj) !important; box-shadow: 0 0 10px var(--color-adj-glow) !important; }
        .tan-slider::-webkit-slider-thumb { background: var(--color-tan) !important; box-shadow: 0 0 10px var(--color-tan-glow) !important; }

        .color-opp-text { color: var(--color-opp); font-weight: 600; }
        .color-adj-text { color: var(--color-adj); font-weight: 600; }
        .color-hyp-text { color: var(--color-hyp); font-weight: 600; }
        .color-tan-text { color: var(--color-tan); font-weight: 600; }

        /* Quadrant Status Grid (ASTC) */
        .quadrant-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 8px;
            margin-top: 1rem;
        }

        .quadrant-box {
            background: rgba(255, 255, 255, 0.02);
            border: 1px solid rgba(255, 255, 255, 0.04);
            border-radius: 8px;
            padding: 8px 12px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 0.85rem;
            transition: all var(--transition-speed) ease;
        }

        .quadrant-box.active {
            border-color: var(--color-primary);
            background: rgba(255, 176, 0, 0.05);
            box-shadow: 0 0 10px rgba(255, 176, 0, 0.1);
        }

        .quadrant-box.active .quadrant-name {
            color: var(--color-primary);
            font-weight: 700;
        }

        .quadrant-name {
            font-weight: 600;
            color: var(--text-muted);
        }

        .quadrant-signs {
            font-family: 'JetBrains Mono', monospace;
            font-size: 0.75rem;
            display: flex;
            gap: 6px;
        }

        .sign-pos { color: #10b981; }
        .sign-neg { color: #ef4444; }

        /* Interactive Canvas overlays / buttons */
        .canvas-overlay-btn {
            position: absolute;
            top: 12px;
            right: 12px;
            background: rgba(15, 18, 30, 0.85);
            border: 1px solid var(--card-border);
            color: var(--text-muted);
            padding: 6px 12px;
            border-radius: 8px;
            font-size: 0.75rem;
            cursor: pointer;
            transition: all 0.2s ease;
            backdrop-filter: blur(8px);
            z-index: 10;
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .canvas-overlay-btn:hover {
            color: var(--text-color);
            background: rgba(255, 176, 0, 0.15);
            border-color: var(--color-primary);
        }

        /* CSS Grid for Waves section custom styling */
        .wave-grid-wide {
            grid-column: 1 / -1 !important;
        }

        .canvas-container.wave-container {
            height: 380px;
        }