:root {
  --color0: #edeaf9;
  --color1: #b8acf9;
  --color2: #8c79fc;
  --color3: #6b52f9;
  --color4: #4626ff;
  --color5: #280dbf;
  --solid-border: 2px solid black;
  --dashed-border: 2px dashed black;
}

* {
  box-sizing: border-box;
}

body {
  font-family: 'Georgia', 'Times New Roman' ,serif;
  margin: 2rem;
}

#legend {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: .5rem;
  margin: 1.5rem auto;
  font-family: Georgia, 'Times New Roman', serif;
  font-size: 0.9rem;
  position: relative;
  flex-wrap: wrap;
  top: 4.5rem;
}

#legend-gradient {
  flex: 1 1 14rem;
  min-width: 10rem;  
  height: 14px;
  border-radius: 6px;
  background-image: linear-gradient(
    90deg,
    var(--color0) 0% 16.6667%,
    var(--color1) 16.6667% 33.3333%,
    var(--color2) 33.3333% 50%,
    var(--color3) 50% 66.6667%,
    var(--color4) 66.6667% 83.3333%,
    var(--color5) 83.3333% 100%
  );
}

#legend .number {
  font-weight: bold;
  min-width: 2rem;
  text-align: center;
}

#legend .label {
  margin-left: .5rem;
  font-style: italic;
  color: #333;
}


table {
  border-collapse: collapse;
  margin: 0 auto;
  max-width: 48rem;
  border-spacing: 0;
  width: 100%;
}

caption {
  margin: 1rem 0 2rem;
  text-align: center;
  font-weight: bold;
  font-size: 1.5rem;
  position: relative;
  top: -1.7rem;
}

thead th {
  padding: 0.5rem 1rem;
  font-size: 1rem;
  font-weight: bold;
  text-align: center;
}

.time {
  position: relative;
  bottom: 10px;
}

.time:not(.first) {
  border-right: var(--solid-border);
}

tr td {
  min-width: 7.5rem;
  height: 1rem;
  padding: 0;
}

.half-hour td {
  height: 1rem;
  min-width: auto;
}


.half-hour .half{
  border-top: var(--dashed-border);
  border-right: var(--solid-border);
}

#last td {
  border-bottom: var(--solid-border);
}

tr td:not(.half) {
  border-bottom: none;
  border-top: var(--solid-border);
  border-right: var(--solid-border);
}


.available-0 {
  background-color: var(--color0);
}

.available-1 {
  background-color: var(--color1);
}

.available-2 {
  background-color: var(--color2);
}

.available-3 {
  background-color: var(--color3);
}

.available-4 {
  background-color: var(--color4);
}

.available-5 {
  background-color: var(--color5);
}