:root {
  --sora-color: #4a9be7;
  --roboco-color: #e76161;
  --miko-color: #f7a9bd;
  --suisei-color: #4169E1;
  --azki-color: #e999ab;
  --aki-color: #f5768b;
  --fubuki-color: #ace5ed;
  --matsuri-color: #f79d26;
  --haato-color: #FF69B4;
  --aqua-color: #f4bee0;
  --shion-color: #9370DB;
  --ayame-color: #df315a;
  --choco-color: #DDA0DD;
  --subaru-color: #f0d881;
  --mio-color: #228B22;
  --okayu-color: #9370DB;
  --korone-color: #FFD700;
  --pekora-color: #84ccf7;
  --flare-color: #FF4500;
  --noel-color: #F5F5F5;
  --marine-color: #DC143C;
  --coco-color: #FE8B04;
  --kanata-color: #66ade4;
  --watame-color: #fef09d;
  --towa-color: #b395e0;
  --luna-color: #fe95ed;
  --lamy-color: #E0FFFF;
  --nene-color: #feb55d;
  --botan-color: #F5F5DC;
  --polka-color: #fe0f80;
  --laplus-color: #9166c8;
  --lui-color: #CD5C5C;
  --koyori-color: #FFB6C1;
  --chloe-color: #bb5562;
  --iroha-color: #98FB98;
  --risu-color: #DEB887;
  --moona-color: #9370DB;
  --iofi-color: #FFB6C1;
  --ollie-color: #FF6347;
  --anya-color: #DDA0DD;
  --reine-color: #4169E1;
  --zeta-color: #517a7a;
  --kaela-color: #d83f3f;
  --kobo-color: #c0d3ed;
  --calli-color: #FF69B4;
  --kiara-color: #fe511d;
  --ina-color: #9370DB;
  --gura-color: #5d80c6;
  --amelia-color: #FFD700;
  --irys-color: #FF1493;
  --kronii-color: #4682B4;
  --mumei-color: #DEB887;
  --fauna-color: #d5e7c0;
  --bae-color: #FF6347;
  --sana-color: #9370DB;
  --shiori-color: #6d6d81;
  --bijou-color: #6e5bf4;
  --nerissa-color: #9370DB;
  --fuwawa-color: #c3daf7;
  --mococo-color: #FF82C9;
  --elizabeth-color: #DC143C;
  --gigi-color: #f7b242;
  --cecilia-color: #98FB98;
  --raora-color: #e883a4;
  --ao-color: #4169E1;
  --kanade-color: #f7dfaf;
  --ririka-color: #F47DA9;
  --raden-color: #9370DB;
  --hajime-color: #B6B9FF;
  --riona-color: #f6337c;
  --niko-color: #f69828;
  --su-color: #4169E1;
  --chihaya-color: #9370DB;
  --vivi-color: #FFB6C1;

  --box-color: #e3f4fa;
}
*,*::before,*::after {
  box-sizing: border-box;
}
body {
  font-family: sans-serif;
  margin: 0;
  padding: 0;
  background-color: #42b9ef;
  background-image: linear-gradient(135deg,rgba(97, 223, 235) 0%, rgba(179, 238, 249, .8) 66%, #2c7cff 100%);
  color: #333;
  font-size: 16px;
}
#calendar-app {
  max-width: 1920px;
  margin: 0 auto;
  padding: 1rem;
  min-height: 100dvh;
}
button {
  -webkit-apperance: none;
  appearance: none;
  padding: 0.5rem;
  border: none;
  background-color: transparent;
  color: #0b4152;
  cursor: pointer;
}
h1{
  text-align: center;
}
#month-label {
  font-size: 1.8rem;
  font-weight: bold;
  color: #1f363a;
  margin: 0 1rem;
}
#calendar-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 0.25rem;
  margin-bottom: 1rem;
}

.weekday-labels {
  display: none;
}

.day-cell {
  background-color: var(--box-color);
  border-radius: 0.5rem;
  padding: 0.5rem;
  min-height: 6em;
  display: flex;
  flex-direction: column;
  font-size: 0.875rem;
  border: 1px solid #434564;
}

.day-cell .weekday {
  font-size: 0.75rem;
  color: #888;
  margin-bottom: 0.25rem;
}

.day-cell.today {
  outline: 2px solid #f39;
  outline-offset: -2px;
}

.day-cell.highlight {
  background-color: #ffe6f0;
}

.event {
  margin: 0.1rem 0;
  padding: 0.1rem 0.25rem;
  border-radius: 0.25rem;
  color: #323232;
  font-size: 0.8rem;
  &.birthday::before { content: "🎂 "; }
  &.debut::before { content: "📢 "; }
  &.graduation::before { content: "🎓 "; }
}

.event.special{
  --padding: 0.25rem;
  &::before { content: "✨ "; }
  &:has(details)::before {
    content: none;
  }
  &:has(details) details::before {
    content: "✨ ";
    position: absolute;
    top: var(--padding);
    left: var(--padding);
  }
  details {
    background: #f0f8ff;
    border: 1px solid #ccc;
    border-radius: var(--padding);
    padding: var(--padding);
    position: relative;
    .event-member{
      padding:calc(var(--padding) / 2) var(--padding);
      &+& {
        margin-top: var(--padding);
      }
      border-radius: var(--padding);
    }
  }
}
summary {
  padding-left: 20px;
  cursor: pointer;
}

.event.hidden {
  display: none !important;
}

#eventList {
  margin-top: 2rem;
}

#header {
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1rem;
  flex-wrap: wrap;
  gap: 0.5rem;
}

input[type="text"] {
  width: min(400px, 100%);
  padding: 0.5rem;
  font-size: 1rem;
  margin: 0.5rem 0;
  box-sizing: border-box;
}

#filter label {
  margin-right: 1rem;
  font-size: 0.9rem;
}

@media (max-width: 991px) {
  #calendar-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}
@media (max-width: 767px) {
  #calendar-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 600px) {
  #calendar-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .event {
    font-size: 0.75rem;
  }

  header {
    flex-direction: column;
    align-items: flex-start;
  }

  #filter label {
    display: inline-block;
    margin-bottom: 0.25rem;
  }
}
@media (max-width: 479px) {
  #calendar-grid {
    grid-template-columns: 1fr;
  }
}
#copyright {
  text-align: center;
  padding: 1rem;
  background-color: #323232;
  color: var(--box-color);
}