/* --- Layout Overrides --- */
@media (min-width: 900px) {
    .module-layout {
        grid-template-columns: 280px 1fr !important; 
        gap: 2rem !important;
    }
}

/* --- Canvas Container --- */
.canvas-container {
    position: relative;
    width: 100%;
    height: 550px; 
    background: #ffffff;
    border-radius: 16px;
    border: 1px solid var(--glass-border);
    box-shadow: inset 0 2px 10px rgba(0,0,0,0.02);
    overflow: hidden;
    cursor: default; 
}

canvas {
    display: block;
    width: 100%;
    height: 100%;
}

/* Interaction Cursors */
canvas.can-drag { cursor: grab; }
canvas.dragging { cursor: grabbing; }

/* --- Sidebar Styling --- */
.data-sidebar {
    height: 550px;
    display: flex;
    flex-direction: column;
    justify-content: flex-start; 
    padding-top: 1.5rem;
    gap: 1.2rem;
    background: transparent !important;
    backdrop-filter: none !important;
    border: none !important;
    box-shadow: none !important;
}

.data-card {
    background: rgba(255,255,255,0.92);
    padding: 1.5rem; 
    border-radius: 12px;
    border: 1px solid rgba(255,255,255,0.8);
    box-shadow: 0 2px 8px rgba(0,0,0,0.03);
    backdrop-filter: blur(8px);
}

.data-card h3 {
    margin: 0 0 1rem 0;
    font-size: 1rem; 
    color: var(--primary);
    border-bottom: 2px solid rgba(59, 89, 152, 0.1);
    padding-bottom: 0.5rem;
}

/* Legend Items */
.legend-list {
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
}

.legend-item { 
    display: flex; 
    align-items: center; 
    gap: 1rem; 
    color: var(--text-main); 
    font-weight: 500;
    font-size: 0.95rem;
}

.dot { 
    width: 18px; 
    height: 18px; 
    border-radius: 50%; 
    border: 2px solid #fff;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}
.pos { background: #e74c3c; }
.neg { background: #3498db; }

.instruction-card {
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: 1rem;
    color: var(--text-light);
    font-size: 0.9rem;
    line-height: 1.4;
}
.icon-trash { font-size: 1.5rem; }


/* --- Controls --- */
.ui-layer {
    position: absolute;
    bottom: 0 !important;
    left: 0 !important;
    right: 0 !important;
    z-index: 10;
    pointer-events: none;
}

.panel-bottom {
    pointer-events: auto;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(8px);
    
    border-top-left-radius: 12px;
    border-top-right-radius: 12px;
    
    box-shadow: 0 -4px 15px rgba(0,0,0,0.05);
    border-top: 1px solid rgba(255,255,255,0.8);
    
    padding: 1.2rem 2rem;
    display: flex;
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    width: 100%;
}

.control-group {
    display: flex;
    gap: 1rem;
    flex: 1;
}

/* Center Column (Toggle) */
.center-col {
    flex: 0 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.2rem;
}

.col-label {
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--text-light);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.mode-toggle-group {
    display: flex;
    gap: 4px;
    background: #f0f2f5;
    padding: 4px;
    border-radius: 8px;
    border: 1px solid rgba(0,0,0,0.05);
}

.btn-mode {
    padding: 6px 14px;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-family: 'Poppins', sans-serif;
    font-size: 0.85rem;
    font-weight: 600;
    background: transparent;
    color: var(--text-light);
    transition: all 0.2s;
}

.btn-mode:hover { background: rgba(0,0,0,0.05); }

.btn-mode.active {
    background: #fff;
    color: var(--primary);
    box-shadow: 0 2px 6px rgba(0,0,0,0.08);
}

/* Add Buttons */
.btn-add {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.7rem 1.4rem;
    border: none;
    border-radius: 12px;
    font-family: 'Poppins', sans-serif;
    font-weight: 600;
    font-size: 0.95rem;
    color: white;
    cursor: pointer;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    transition: transform 0.2s, box-shadow 0.2s;
}

.btn-add:hover { transform: translateY(-2px); box-shadow: 0 6px 15px rgba(0,0,0,0.15); }
.btn-add:active { transform: scale(0.95); }

.btn-add.pos { background: linear-gradient(135deg, #e74c3c 0%, #c0392b 100%); }
.btn-add.neg { background: linear-gradient(135deg, #3498db 0%, #2980b9 100%); }

.btn-reset {
    flex: 0 0 auto;
    padding: 0.7rem 1.2rem;
    background: transparent;
    border: 2px solid #cbd5e0;
    border-radius: 12px;
    color: var(--text-light);
    font-weight: 600;
    font-family: 'Poppins', sans-serif;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-reset:hover {
    border-color: var(--text-light);
    color: var(--text-main);
    background: rgba(0,0,0,0.03);
}

.panel-divider {
    width: 1px;
    height: 40px;
    background: rgba(0,0,0,0.1);
}