:root {
  --background: #ffffff;
  --card: #fafafa;
  --text: #1d1d1f;
  --subtext: #86868b;
  --line: #e8e8e8;
  --empty: #c7c7cc;
}

* {
  box-sizing: border-box;
}

html,
body {
  min-height: 100%;
}

body {
  margin: 0;
  padding: 6px;

  display: flex;
  justify-content: center;
  align-items: flex-start;

  overflow: hidden;

  background: var(--background);
  color: var(--text);

  font-family:
    -apple-system,
    BlinkMacSystemFont,
    "SF Pro Display",
    Pretendard,
    sans-serif;
}

button,
input {
  font: inherit;
}

button {
  color: inherit;
}


/* Main widget */

.widget {
  width: min(100%, 430px);
  height: 260px;
  padding: 17px 19px 14px;

  display: grid;
  grid-template-rows: auto 1fr auto;

  overflow: hidden;

  background: rgba(250, 250, 250, 0.92);

  border:
    1px solid rgba(0, 0, 0, 0.018);

  border-radius: 16px;

  box-shadow:
    0 12px 28px rgba(0, 0, 0, 0.055);
}


/* Shared flex alignment */

.header,
.header > div,
.footer,
.item {
  display: flex;
  align-items: center;
}


/* Header */

.header {
  justify-content: space-between;
}

.header > div {
  gap: 11px;
}

.header strong {
  font-size: 16px;
  font-weight: 650;
}

.header span {
  color: var(--subtext);
  font-size: 12px;
}


/* Buttons */

.text-button,
.add-button,
.check,
.move,
.remove {
  padding: 0;

  border: 0;
  background: transparent;

  cursor: pointer;
}

.text-button {
  color: var(--subtext);
  font-size: 12px;
}


/* List area */

.list {
  min-height: 0;
  margin-top: 12px;

  overflow-y: auto;

  scrollbar-width: none;
}

.list::-webkit-scrollbar {
  display: none;
}


/* Individual task */

.item {
  min-height: 38px;

  border-bottom:
    1px solid var(--line);
}


/* Completion circle */

.check {
  width: 31px;
  flex: 0 0 31px;

  color: var(--empty);

  font-size: 21px;
  line-height: 1;

  transition:
    color 0.18s ease,
    transform 0.18s ease;
}

.check:hover {
  transform: scale(1.08);
}

.item.done .check {
  color: var(--text);
  transform: scale(1.05);
}


/* Task text */

.item-text {
  width: 100%;
  min-width: 0;
  padding: 8px 5px;

  border: 0;
  outline: 0;

  background: transparent;
  color: var(--text);

  font-size: 15px;
  line-height: 1.3;

  text-overflow: ellipsis;
}

.item.done .item-text {
  color: var(--subtext);

  text-decoration: line-through;
  text-decoration-thickness: 1px;
}


/* Editing controls */

.item-actions {
  display: none;
  align-items: center;

  gap: 9px;
  margin-left: 7px;
}

.editing .item-actions {
  display: flex;
}

.move,
.remove {
  color: var(--subtext);

  font-size: 13px;
  line-height: 1;
}

.move:disabled {
  opacity: 0.2;
  cursor: default;
}

.remove {
  font-size: 17px;
}


/* Footer */

.footer {
  justify-content: space-between;

  padding-top: 11px;
}

.add-button,
#progress {
  color: var(--subtext);
  font-size: 12px;
}

.add-button:hover,
.text-button:hover {
  color: var(--text);
}


/* Empty list message */

.empty-state {
  height: 100%;

  display: grid;
  place-items: center;

  color: var(--subtext);
  font-size: 14px;
}


/* Completion animation */

@keyframes fillCircle {
  0% {
    transform: scale(0.7);
    opacity: 0.35;
  }

  65% {
    transform: scale(1.18);
    opacity: 1;
  }

  100% {
    transform: scale(1.05);
  }
}

.item.just-done .check {
  animation:
    fillCircle 0.32s ease;
}


/* Small screens */

@media (max-width: 320px) {
  .widget {
    padding-inline: 14px;
  }

  .header span {
    display: none;
  }
}


/* Reduced motion */

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }
}