:root {
  --henle-blue: #5d7a8c;
  --schirmer-yellow: #f1e4bc;
  --paper: #fdfcf8;
  --text-dark: #1a1a1a;
  --text-gray: #636e72;
  --line-color: #4d4d4d;

  --pentagram-spacing: 30px;
  --pentagram-line-width: 2px;
  --optional-tree-height: 200px;

  --tree-margin: calc(var(--pentagram-spacing) + var(--pentagram-line-width));
  --bullet-width: 24px;
}

html {
  background-color: #ffffe0;
}

.tree-container {
  background-color: var(--paper);
  background-image: url("./assets/natural-paper.png");
  padding: 30px;
  border-radius: 2px;
  margin: auto;
  margin-top: 32px;
  width: fit-content;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
  font-family: "Georgia", serif;
  border-left: 6px solid var(--henle-blue);
  display: flex;
  flex-wrap: wrap;
  gap: 2rem;
}

@media (min-width: 600px) {
  .tree-container {
    flex-wrap: unset;
  }
}

.tree {
  min-height: var(--optional-tree-height);
  position: relative;
  display: flex;
  flex-direction: column;
}

.tree > .tree-list {
  flex: 1;
}

.tree-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.results-container {
  margin-left: calc(calc(var(--tree-margin) - var(--bullet-width)) / 2);
}

.tree-list .tree-list {
  margin-left: var(--tree-margin);
}

.tree-node {
  position: relative;
  margin: 0;
}

.node-row {
  display: flex;
  align-items: center;
  padding: 6px 0 6px 0;
  cursor: pointer;
  position: relative;
}

.note-icon {
  width: var(--bullet-width);
  height: 20px;
  display: flex;
  color: var(--text-dark);
  align-items: center;
  justify-content: center;
  transform: rotate(90deg);
  overflow: hidden;
}

.note-icon > span {
  font-size: 3.2rem;
  padding-bottom: 2rem;
}

.note-accent {
  width: 32px;
  height: 16px;
  display: flex;
  justify-content: center;
  color: var(--text-dark);
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.note-accent > span {
  font-size: 2.5rem;
  padding-top: 1.2rem;
}

.node-text {
  font-size: 1rem;
  color: var(--text-dark);
  font-style: italic;
  transition: color 0.2s;
  background-color: var(--paper);
}

.node-row:hover .node-text {
  color: var(--henle-blue);
}

.matched {
  background-color: var(--schirmer-yellow);
  padding: 2px 4px;
  border-radius: 1px;
  box-shadow: 1px 1px 3px rgba(0, 0, 0, 0.05);
  font-weight: bold;
  margin-right: 0.5rem;
}

.node-meta {
  font-size: 0.7rem;
  color: var(--text-gray);
  margin-left: auto;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.pentagram {
  position: absolute;
  list-style: none;
  padding-left: 0;
  left: calc(var(--pentagram-spacing) / 2);
  display: flex;
  margin: 0;
  height: 100%;
  opacity: 0.5;
}

.pentagram > li {
  width: var(--pentagram-spacing);
}

.pentagram > li:nth-child(odd) {
  background: var(--line-color);
  width: var(--pentagram-line-width);
}

.double-bar-line {
  margin: 0 calc(var(--pentagram-spacing) / 2);
  width: calc(calc(var(--tree-margin) * 4) + var(--pentagram-line-width));
  margin-top: 4px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.double-bar-line > * {
  background-color: var(--line-color);
  height: 4px;
}

.double-bar-line > *:nth-child(2) {
  height: 8px;
}

.clef {
  margin: 0 calc(var(--pentagram-spacing) / 2);
  width: calc(calc(var(--tree-margin) * 4) + var(--pentagram-line-width));
}

.clef.c-clef {
  height: calc(var(--tree-margin) * 4 * 18 / 25);
}

.clef.g-clef {
  height: calc(var(--tree-margin) * 4 * 15.186 / 40.768);
}

.clef.f-clef {
  height: calc(var(--tree-margin) * 4 * 18 / 20);
}

.clef-svg {
  width: 100%;
  height: 100%;
  color: var(--line-color);
}

.search-group {
  margin-top: 16px;
  z-index: 1;
}

.search-input {
  padding: 8px 12px;
  border: 1px solid var(--line-color);
  border-radius: 4px;
  font-size: 1rem;
  font-family: "Georgia", sans-serif;
}

/* SEARCH INTERACTIONS */
.search-input.invalid {
  border: 1px solid #c0392b !important;
  background-color: #faf2ee;
  outline: none;
}

.search-input.valid {
  border: 1px solid #27ae60 !important;
  background-color: #f5faf8;
  outline: none;
}

.search-input {
  width: 100%;
  box-sizing: border-box;
}

.results-container {
  height: 0;
  overflow: hidden;
  transition: height 0.3s ease;
}

.results-container.expanded {
  height: 100px;
  transition: height 0.3s ease;
}

.results-container.big {
  height: 250px;
  transition: height 0.3s ease;
}