$fn=64;

// --- Parameters ---
card_width = 41;
card_length = 63;
tolerance = 2.5; // Extra space for easy insertion/removal (accommodates sleeves)
capacity = 25;   // Height of the card stack
wall = 2;        // Wall thickness
floor = 2;       // Bottom thickness

// --- Calculated Dimensions ---
inner_w = card_width + tolerance;
inner_l = card_length + tolerance;
outer_w = inner_w + 2 * wall;
outer_l = inner_l + 2 * wall;
outer_h = capacity + floor;

// --- Geometry ---
difference() {
    // Main outer body
    translate([0, 0, outer_h / 2])
        cube([outer_w, outer_l, outer_h], center=true);

    // Inner card slot
    // Shifted up by floor thickness, made taller to ensure a clean cut at the top
    translate([0, 0, (outer_h / 2) + floor])
        cube([inner_w, inner_l, outer_h], center=true);

    // Finger cutouts for easy card removal
    // Placed at the top edge, cutting through the side walls
    translate([0, 0, outer_h])
        rotate([0, 90, 0])
        cylinder(r=15, h=outer_w + 10, center=true);
}