* {
  -webkit-box-sizing: border-box;
  -moz-box-sizing: border-box;
  box-sizing: border-box;
}
:root {
  --main-blue-color: #00c4cc;
  --main-blue-color-alt: #009da3;
  --main-violet-color: #9c27b0;
  --main-violet-color-alt: #7b2cbf;
  --white-color: #ced4e2;
  --black-color: #141516;
  --main-transition: 0.2s;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: "Roboto", sans-serif;
  height: 100vh;
}
body.blue-theme {
  background-image: linear-gradient(
    to top,
    #0a2851 10%,
    #084668 40%,
    #075e7c 60%,
    #05778f 80%,
    #0399ab 100%
  );
}
body.violet-theme {
  background-image: linear-gradient(
    to top,
    #240046 20%,
    #3c096c 40%,
    #5a189a 60%,
    #7b2cbf 80%,
    #9d4edd 100%
  );
}
body.light-theme {
  background-color: var(--white-color);
}
body.dark-theme {
  background-color: var(--black-color);
}
.container {
  display: flex;
  flex-direction: column;
  height: 100%;
}
.header {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  background-color: var(--white-color);
  color: var(--black-color);
  width: fit-content;
  border-radius: 4px;
  padding: 0 0.38rem;
  margin: 1rem auto;
}
body.light-theme .header {
  background-color: var(--black-color);
  color: var(--white-color);
}
.header div {
  padding: 0.38rem 0.63rem;
  cursor: pointer;
  transition: transform var(--main-transition);
}
.header div:hover {
  transform: scale(1.2);
}
.header div i {
  font-size: 1.25rem;
}
.counter {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-grow: 1;
}
.counter .number {
  color: var(--white-color);
  font-size: 22rem;
  margin: auto;
  cursor: default;
}
body.light-theme .counter .number {
  color: var(--black-color);
}
.counter .increase,
.counter .decrease {
  position: fixed;
  font-size: 4.7rem;
  cursor: pointer;
  transition: color var(--main-transition);
  margin: 0 1.25rem;
  top: 50%;
  transform: translateY(-50%);
}
body.blue-theme .counter .increase,
body.blue-theme .counter .decrease {
  color: var(--main-blue-color);
}
body.blue-theme .counter .increase:hover,
body.blue-theme .counter .decrease:hover {
  color: var(--main-blue-color-alt);
}
body.violet-theme .counter .increase,
body.violet-theme .counter .decrease {
  color: var(--main-violet-color);
}
body.violet-theme .counter .increase:hover,
body.violet-theme .counter .decrease:hover {
  color: var(--main-violet-color-alt);
}
body.light-theme .counter .increase,
body.light-theme .counter .decrease {
  color: var(--black-color);
}
body.light-theme .counter .increase:hover,
body.light-theme .counter .decrease:hover {
  color: #3a3a3a;
}
body.dark-theme .counter .increase,
body.dark-theme .counter .decrease {
  color: var(--white-color);
}
body.dark-theme .counter .increase:hover,
body.dark-theme .counter .decrease:hover {
  color: #979797;
}
.counter .increase {
  right: 1rem;
}
.counter .decrease {
  left: 1rem;
}
.counter .btns div.hide-btn {
  opacity: 0;
  pointer-events: none;
}
.counter .btns div.show-btn {
  opacity: 1;
  pointer-events: initial;
}
.graphics .minus-graphic,
.graphics .plus-graphic {
  font-size: 18.8rem;
  position: fixed;
  opacity: 0.1;
  z-index: -1;
}
body.blue-theme .graphics .minus-graphic,
body.blue-theme .graphics .plus-graphic {
  color: var(--main-blue-color);
}
body.violet-theme .graphics .minus-graphic,
body.violet-theme .graphics .plus-graphic {
  color: var(--main-violet-color);
}
body.light-theme .graphics .minus-graphic,
body.light-theme .graphics .plus-graphic {
  color: var(--black-color);
  opacity: 0.05;
}
body.dark-theme .graphics .minus-graphic,
body.dark-theme .graphics .plus-graphic {
  color: var(--white-color);
  opacity: 0.02;
}
.graphics .minus-graphic {
  left: -9.4rem;
  top: -9.4rem;
}
.graphics .plus-graphic {
  right: -9.4rem;
  bottom: -9.4rem;
}
.limit {
  color: var(--white-color);
  position: absolute;
  bottom: 1.87rem;
  left: 50%;
  transform: translateX(-50%);
}
/* popups */
.popup {
  position: absolute;
  left: 0;
  top: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  line-height: 1.5;
  gap: 1rem;
  padding: 1.25rem;
  width: 100%;
  height: 100%;
  font-size: 1.4rem;
  transition: transform, background-color, color, var(--main-transition);
  opacity: 0;
  transform: scale(0) translate(-50%, -50%);
  transform-origin: center 0;
}
body.blue-theme .popup {
  color: var(--black-color);
  background-color: #0399ab;
}
body.violet-theme .popup {
  color: var(--white-color);
  background-color: #3c096c;
}
body.light-theme .popup {
  color: var(--black-color);
  background-color: var(--white-color);
}
body.dark-theme .popup {
  color: var(--white-color);
  background-color: var(--black-color);
}
.popup.show {
  opacity: 1;
  transform: scale(1);
}
.popup .title {
  font-weight: bold;
  font-size: 2rem;
  margin: 0 0 0.63rem;
}
.popup button {
  cursor: pointer;
  border: none;
  background-color: transparent;
  transition: transform var(--main-transition);
  padding: 0.63rem 1.88rem;
}
body.blue-theme .popup button {
  color: var(--black-color);
}
body.violet-theme .popup button {
  color: var(--white-color);
}
body.light-theme .popup button {
  color: var(--black-color);
}
body.dark-theme .popup button {
  color: var(--white-color);
}
.popup .close {
  margin-top: 1.25rem;
}
.popup button:hover {
  transform: scale(1.2);
}
.settings input[type="number"]::-webkit-inner-spin-button {
  /* to show input controllers always */
  opacity: 1;
}
.settings .inputs div {
  display: flex;
  gap: 0.4rem;
}
.settings .inputs div:last-child {
  margin-top: 0.63rem;
}
.settings input {
  flex: 1;
  color: #fff;
  border: none;
  border-radius: 3px;
  width: 5rem;
  text-align: center;
  transition: var(--main-transition);
}
body:not(.violet-theme) .settings input {
  background-color: #3b3b3b;
}
body.violet-theme .settings input {
  background-color: #c3c3c3;
  color: var(--black-color);
}
.settings input:focus {
  outline: none;
}
.settings .themes div:first-child {
  margin-top: 0.35rem;
  margin-bottom: 0.63rem;
  font-size: 1.1rem;
}
.settings .themes .colors {
  display: flex;
  gap: 0.35rem;
}
.settings .themes span {
  width: 2.5rem;
  height: 2.5rem;
  border-width: 1px;
  border-style: solid;
  display: block;
  cursor: pointer;
  transition: opacity var(--main-transition);
  opacity: 0.5;
}
.settings .themes span.active,
.settings .themes span:hover {
  opacity: 1;
}
body.blue-theme .settings .themes span {
  border-color: var(--black-color);
}
body.light-theme .settings .themes span.light {
  border: 1px solid var(--black-color);
}
.settings .themes span.blue {
  background-image: linear-gradient(
    to top,
    #0a2851 10%,
    #084668 40%,
    #075e7c 60%,
    #05778f 80%,
    #0399ab 100%
  );
}
.settings .themes span.violet {
  background-image: linear-gradient(
    to top,
    #240046 20%,
    #3c096c 40%,
    #5a189a 60%,
    #7b2cbf 80%,
    #9d4edd 100%
  );
}
.settings .themes span.light {
  background-color: var(--white-color);
}
.settings .themes span.dark {
  background-color: var(--black-color);
}