#include QMK_KEYBOARD_H

// Layer names for readability.
#define BASE_LAYER 0
#define FUNC_LAYER 1

const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {

// Base layer, always active.
[BASE_LAYER] = LAYOUT_ansi(
  KC_GESC, KC_1,    KC_2,    KC_3,    KC_4,    KC_5,    KC_6,    KC_7,    KC_8,    KC_9,    KC_0,    KC_MINS, KC_EQL,  KC_BSPC, KC_HOME, \
  KC_TAB,  KC_Q,    KC_W,    KC_E,    KC_R,    KC_T,    KC_Y,    KC_U,    KC_I,    KC_O,    KC_P,    KC_LBRC, KC_RBRC, KC_BSLS, KC_END,  \
  KC_CAPS, KC_A,    KC_S,    KC_D,    KC_F,    KC_G,    KC_H,    KC_J,    KC_K,    KC_L,    KC_SCLN, KC_QUOT,          KC_ENT,  KC_DEL,  \
  KC_LSFT,          KC_Z,    KC_X,    KC_C,    KC_V,    KC_B,    KC_N,    KC_M,    KC_COMM, KC_DOT,  KC_SLSH, KC_RSFT, KC_UP,   _______, \
  KC_LCTL, KC_LALT, KC_LGUI,                   KC_SPC,                             KC_RGUI, MO(1),   _______, KC_LEFT, KC_DOWN, KC_RGHT),

// Function overlay, toggled by the Fn key.
[FUNC_LAYER] = LAYOUT_ansi(
  KC_GRV,  KC_F1,   KC_F2,   KC_F3,   KC_F4,   KC_F5,   KC_F6,   KC_F7,   KC_F8,   KC_F9,   KC_F10,  KC_F11,  KC_F12,  _______, KC_VOLU, \
  _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, KC_VOLD, \
  _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______,          _______, KC_MUTE, \
  _______,          _______, _______, _______, _______, _______, _______, _______, BL_DEC,  BL_INC,  BL_TOGG, _______, KC_PGUP, _______, \
  _______, _______, KC_MRWD,                   KC_MPLY,                            KC_MFFD, _______, _______, KC_HOME, KC_PGDN, KC_END),
};