* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  padding: 1rem;
  font-family: 'Nunito', sans-serif;
}

h1.title {
  font-size: 1.75rem;
  font-weight: 600;
  color: #1e293b;
}

p.formula {
  font-family: 'KaTeX_Math';
  color: #334155;
  font-size: 1.25rem;
  margin-top: 1rem;
  background-color: #f1f5f9;
  width: fit-content;
  padding: 0.75rem 1.25rem;
  border-radius: 0.25rem;
}

form {
  margin-top: 2rem;
  display: flex;
  gap: 0.75rem;
  align-items: flex-end;
  flex-wrap: wrap;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.form-group label {
  font-size: 1rem;
  font-weight: 500;
  color: #334155;
}

.form-group input {
  border: none;
  background-color: #fff;
  border: 1px solid #a1a1aa;
  font-size: 1rem;
  padding: 0.75rem 1rem;
  border-radius: 0.25rem;
  font-weight: 400;
  color: #334155;
  outline: none;
  font-family: inherit;
}

.form-group input:focus {
  border: 1px solid #6366f1;
}
.form-group input:disabled {
  background-color: #f4f4f5;
}
form button[type='submit'] {
  font-size: 1rem;
  padding: 0.75rem 1.5rem;
  display: block;
  flex-shrink: 0;
  height: fit-content;
  border: 1px solid #6366f1;
  background-color: #6366f1;
  color: #fff;
  border-radius: 0.25rem;
  cursor: pointer;
}

form button[type='submit']:hover {
  filter: brightness(0.95);
}

section#visualization {
  display: none;
}

section#visualization.show {
  display: flex;
  margin-top: 5rem;
  gap: 0.5rem;
}

section#visualization aside.left {
  display: flex;
  align-items: center;
  gap: 1rem;
  /* This height depend on graph height */
  height: 500px;
}

section#visualization p.y-legend {
  writing-mode: vertical-lr;
  transform: rotate(180deg);
  font-family: 'KaTeX_Math';
  font-size: 1.25rem;
  color: #334155;
}

section#visualization .y-axis-list {
  display: flex;
  flex-direction: column-reverse;
  justify-content: space-between;
  height: 100%;
}

section#visualization .y-axis-list .y-axis {
  font-size: 1rem;
  line-height: 0.25;
  color: #334155;
}

section#visualization aside.right {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.25rem;
}
section#visualization aside.right .graph-area {
  position: relative;
}

section#visualization .data-legend {
  position: absolute;
  left: 0px;
  top: 0px;
  z-index: -1;
  opacity: 0;
  width: 200px;
  background-color: #1e293bbd;
  border-radius: 0.25rem;
  overflow: hidden;
  color: white;
  padding: 0.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  backdrop-filter: blur(25px);
  transition: 0.5s ease-in-out;
}

section#visualization .data-legend.show {
  opacity: 1;
  z-index: 999;
}

section#visualization .data-legend .data-y {
  display: flex;
  gap: 0.5rem;
  align-items: center;
}

section#visualization .data-legend .data-y span.circle {
  width: 1rem;
  height: 1rem;
  background-color: #6366f1;
  border-radius: 50%;
}
section#visualization .x-axis-list {
  display: flex;
  justify-content: space-around;
  width: 100%;
}

section#visualization .x-axis-list .x-axis {
  font-size: 1rem;
  line-height: 1;
  color: #334155;
}

section#visualization p.x-legend {
  font-family: 'KaTeX_Math';
  font-size: 1.25rem;
  color: #334155;
}

.graph rect {
  position: relative;
}

.graph rect.animate {
  animation: toTop 0.5s forwards ease-in-out;
}

@keyframes toTop {
  from {
    height: 0%;
    y: -5%;
  }
  to {
    height: var(--data-h-animate);
    y: var(--data-y-animate);
  }
}