hugo-theme/static/css/calendar.css

:root {
--cal-bg: darkslategray;
--cal-fg: white;

--cal-month-bg: black;
--cal-month-fg: cyan;

--cal-weekdays-bg: gray ;
--cal-weekdays-fg: black;

--cal-day-empty-fg: #888;
--cal-day-empty-bg: #555;

--cal-day-busy-fg:  #555;
--cal-day-busy-bg:  #888;

--cal-day-hover-fg: #555;
--cal-day-hover-bg: black;

--cal-event-fg: white;
--cal-event-bg: var(--acc-1) ;
}

 .calendar {
  width: 100%;
	max-width: 1000px;
  margin: 20px auto;
  padding: 0;
  background-color: var(--cal-bg);
  color: var(--cal-fg);
 }

 a.month {
  display: block;
  width: 100%;
  padding: 15px 0;
  text-align: center;
  background-color: var(--cal-month-bg);
  color: var(--cal-month-fg);
	pointer-events: none;
 }

 .days {
  width: calc(100% - 10 px) ;
  padding: 5px;
  margin: auto;
  display: flex;
  flex-wrap: wrap;
 }

 .weekdays {
  display: block;
  width: 100%;
  margin: 0;
  padding: 0;
	pointer-events: none;
 }

 .weekdays p {
  display: inline-block;
  width: calc(14.28%);
  background-color: var(--cal-weekdays-bg);
  color: var(--cal-weekdays-fg);
  margin: 0;
  padding: 0;
  text-align: center;
	/* border: 0px solid var(--bg); */
	/* border-collapse: collapse; */
}

 .pad-day, .day {
  width: calc(14.28% - 3px - 10px);
  padding: 0 5px;
  margin: 1.5px;
  aspect-ratio: 1;
 }


 .day {
  background-color: var(--cal-day-empty-bg);
  color: var(--cal-day-empty-fg);
  transition: 400ms;

  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
 }


 .day:has(>.event) {
  display: block;
  color: var(--cal-day-busy-fg);
  background-color: var(--cal-day-busy-bg);
 }

.day:has(>.event):hover {
  transform: scale(1.2);
  background-color: var(--cal-day-hover-bg);
  color: var(--cal-day-hover-fg);
 }

 .day-num {
  font-size: 8vh;
	pointer-events: none;
 }

.day:has(>.event) .day-num {
  font-size: 4vh;
 }

 .event, .event a {
  font-size: 1.5vh;
  color: var(--cal-event-fg);
  background-color: var(--cal-event-bg);
 }

 .mobile-date { display: none;}
 
/* mobile layout */
@media screen and (max-width: 755px) {
  .day, .pad-day, .weekdays, a.month { display:  none; }

  .days { 
    padding: 0;
    text-align: left;
   }

  .calendar{
    background-color: inherit;
    
  } 
  .day:has(>.event) {
    display: block;
    width: 100%;
    aspect-ratio: auto;

    text-align: left;

    border-left-width: 5px;
    border-left-style: solid;
    margin-top: 10px;
    background-color: var(--alt-bg);
    border-left-color: var(--acc-1);
    padding: 20px;
    color: var(--alt-fg);

  }

  .day:has(>.event):hover {
    background-color: var(--alt-bg);
    transform: none;
    color: var(--alt-fg);

  }

  .day-num { display: none; }

 .mobile-date { 
    display: inline-block;
    
    text-align: left;
    font-size: 3vh;
    width: auto;

  }

  .event {

    float: right;
    height: 100%;

    display:flex;justify-content:flex-end;align-items:center;
  }

  .event, .event a {
    background: none;

  }
    .event a {
    color: var(--acc-1);
    font-size: 2vh;
    }
}