$fn=64;

// --- Parametric Variables ---
// Card dimensions (Standard 63x88mm + 3mm tolerance for easy fit/sleeves)
card_width = 66;  
card_length = 91; 
stack_height = 40; // Holds ~60-75 sleeved cards

// Tray settings
wall_thickness = 2;
base_thickness = 2;
cutout_radius = 20; // Radius of the finger grab cutouts

// Calculated overall dimensions
outer_w = card_width + (wall_thickness * 2);
outer_l = card_length + (wall_thickness * 2);
outer_h = stack_height + base_thickness;

difference() {
    // Main tray body
    cube([outer_w, outer_l, outer_h]);
    
    // Inner cavity for cards
    // Z is increased by 1 to ensure a clean manifold cut at the top
    translate([wall_thickness, wall_thickness, base_thickness])
        cube([card_width, card_length, stack_height + 1]);
        
    // Finger cutouts on the side walls for easy gripping
    // Translated slightly outside the X bounds (-1) and extended (+2) for clean cuts
    translate([-1, outer_l / 2, outer_h])
        rotate([0, 90, 0])
        cylinder(h = outer_w + 2, r = cutout_radius);
}