styles.css

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

body {
  font: 200 16px/1.4 "Arial", sans-serif;
  color: #000;
  background: #fff;
}

article#app {
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px;
  min-height: 100vh;
  position: relative;
}

nav {
  position: relative;
  padding: 0 0 20px 0;
  border-bottom: 1px solid #eee;
  margin-bottom: 30px;
}

nav h1 {
  display: inline-block;
  font: 900 30px/30px "Trebuchet MS", sans-serif;
  margin: 0 30px 0 0;
  vertical-align: middle;
}

nav h1 a {
  color: #b4e61e;
  text-decoration: none;
}

nav form {
  display: inline-block;
  vertical-align: middle;
  margin-right: 20px;
}

nav form input[type="text"] {
  height: 30px;
  width: 220px;
  font: 500 13px/13px Arial, sans-serif;
  background: #fff;
  border: 1px solid #969696;
  border-radius: 5px;
  padding: 0 10px;
}

nav form input:focus {
  outline: none;
  box-shadow: 0 0 10px #befa50;
}

nav a {
  display: inline-block;
  text-decoration: none;
  color: #000;
  margin-right: 16px;
  vertical-align: middle;
  font-size: 16px;
}

nav a:hover {
  color: #64961e;
}

nav a#upload {
  position: absolute;
  top: 0;
  right: 0;
  height: 30px;
  width: 120px;
  line-height: 30px;
  text-align: center;
  font: 900 18px/30px "Trebuchet MS", sans-serif;
  background: #befa50;
  border-radius: 10px;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.25);
  color: #000;
  margin: 0;
}

main#view {
  min-height: 500px;
}

footer {
  margin-top: 40px;
  padding: 20px 0;
  border-top: 1px solid #eee;
  font-size: 12px;
  text-align: center;
}

footer ul li {
  display: inline;
  list-style: none;
  margin: 0 10px;
}

footer a {
  color: #0064ff;
  text-decoration: none;
}

footer a:hover {
  text-decoration: underline;
}

footer span#copyright {
  color: #323232;
}

/* ---- Headings ---- */
h2 {
  font: 500 22px/1.4 "Arial", sans-serif;
  margin: 30px 0 10px 0;
}

h3 {
  font: 500 18px/1.4 "Arial", sans-serif;
  margin: 16px 0 8px 0;
}

p {
  line-height: 1.5;
  margin-bottom: 12px;
}

/* ---- Home ---- */
.home-intro {
  max-width: 720px;
  font-size: 17px;
  line-height: 1.5;
}

.home-intro p {
  margin-bottom: 14px;
}

.home-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 20px;
  margin-top: 30px;
}

.home-card {
  border: 1px solid #ddd;
  border-radius: 10px;
  padding: 20px;
  text-decoration: none;
  color: #000;
}

.home-card:hover {
  box-shadow: 0 0 16px rgba(180, 230, 30, 0.6);
  border-color: #b4e61e;
}

.home-card h3 {
  margin: 0 0 6px 0;
  color: #64961e;
}

/* ---- Instruments ---- */
.instrument-section img.instrument-image {
  display: block;
  margin: 10px 0 16px 0;
}

.fingering-chart {
  overflow-x: auto;
  white-space: nowrap;
  padding: 6px 0;
}

div.charts {
  display: inline-block;
  vertical-align: top;
}

div.valves {
  position: relative;
  display: inline-block;
  margin: 0 6px 0 0;
  vertical-align: top;
  text-align: center;
}

div.valves div.key {
  font: 700 12px/16px "Arial", sans-serif;
  height: 22px;
  width: 22px;
  margin-bottom: 4px;
}

div.valves .valve {
  height: 14px;
  width: 14px;
  border: 1px solid #808080;
  margin: 2px auto;
  border-radius: 7px;
  background: #fff;
}

div.valves .valve.pressed1 {
  background: #323232;
}

div.valves .valve.pressed0 {
  background: #fff;
}

div.slide {
  position: relative;
  display: inline-block;
  margin: 0 6px 0 0;
  vertical-align: top;
  text-align: center;
  width: 22px;
}

div.slide div.key {
  font: 700 12px/16px "Arial", sans-serif;
  height: 22px;
  width: 22px;
  margin-bottom: 2px;
}

div.slide div.valve {
  height: 16px;
  width: 16px;
  margin: 2px auto;
  border-radius: 8px;
  background: #646464;
  color: #fff;
  position: relative;
  font: 700 10px/16px "Arial", sans-serif;
}

div.slide div.alt {
  z-index: -1;
  position: absolute;
  top: 22px;
  left: 50%;
  transform: translateX(-50%);
  background: #c8c8c8;
  color: #fff;
}

div.slide div.f_attachment {
  position: absolute;
  top: 22px;
  left: 50%;
  transform: translateX(-50%);
  background: #b4dc1e;
  color: #fff;
}

div.slide span.num {
  display: block;
  line-height: 16px;
}

.sax-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.sax-cell {
  width: 60px;
  text-align: center;
}

.sax-cell .key {
  font: 700 12px/16px "Arial", sans-serif;
  margin-bottom: 4px;
}

.sax-cell svg {
  display: block;
  margin: 0 auto;
}

/* ---- Range ---- */
table.range-table {
  border-collapse: collapse;
  margin-top: 20px;
}

table.range-table td {
  padding: 4px 10px 4px 0;
  vertical-align: middle;
}

table.range-table tr:nth-child(odd) {
  background: #fafafa;
}

table.range-table td.label {
  font-weight: bold;
  white-space: nowrap;
  padding-right: 16px;
}

.range-wrap {
  overflow-x: auto;
}

.piano-row {
  display: inline-block;
  white-space: nowrap;
  user-select: none;
}

.piano_button {
  display: inline-block;
  text-align: center;
  height: 26px;
  width: 14px;
  font: 700 8px/8px "Arial", sans-serif;
  border-width: 1px 0 1px 1px;
  border-style: solid;
  border-color: #808080;
  vertical-align: top;
  padding-top: 2px;
}

.piano_button:last-child {
  border-width: 1px 1px 1px 1px;
}

.piano_button.white {
  background: #fff;
  color: #000;
}

.piano_button.black {
  background: #000;
  color: #fff;
}

.piano_button.whiteplayable {
  background: #b4e61e;
  color: #000;
}

.piano_button.blackplayable {
  background: #64961e;
  color: #fff;
}

.frequenz .piano_button {
  height: 60px;
  width: 14px;
}

/* ---- Upload ---- */
.upload-form {
  max-width: 700px;
}

.upload-form fieldset {
  margin-bottom: 16px;
}

.upload-form label {
  display: inline-block;
  background: #ececec;
  border-radius: 5px;
  margin: 5px 8px 5px 0;
  padding: 3px 8px;
  font-size: 14px;
}

.upload-form input[type="text"],
.upload-form input[type="number"],
.upload-form input[type="time"],
.upload-form select {
  height: 32px;
  margin: 5px 0;
  padding: 4px 8px;
  border: 1px solid #b4b4b4;
  border-radius: 5px;
  background: #fff;
  font: 500 14px/14px Arial, sans-serif;
  color: #323232;
}

.upload-form input[type="number"] {
  width: 70px;
}

.upload-form input[type="time"] {
  width: 100px;
}

.upload-form .meter {
  display: inline-block;
  vertical-align: middle;
}

.upload-form .meter input[type="number"] {
  height: 22px;
  width: 40px;
  margin: 0;
  display: block;
}

.upload-form .links-row {
  margin: 10px 0;
}

.upload-form .links {
  display: inline-block;
  height: 60px;
  width: 70px;
  margin: 0 6px 0 0;
  padding: 8px;
  background: #c8c8c8;
  border-radius: 6px;
  text-align: center;
  color: #333;
  font-size: 12px;
  line-height: 44px;
  cursor: pointer;
}

.upload-form .links:hover {
  background: #b4e61e;
}

.upload-form input[type="submit"] {
  height: 36px;
  padding: 0 20px;
  margin-top: 16px;
  background: #befa50;
  border: 1px solid #b4b4b4;
  border-radius: 6px;
  font-weight: 700;
  cursor: pointer;
}

.upload-form input[type="submit"]:hover {
  box-shadow: 0 0 10px #befa50;
}

/* ---- Static legal pages ---- */
.legal {
  max-width: 760px;
  line-height: 1.55;
}

.legal h2 {
  margin-top: 24px;
}

.legal h3 {
  margin-top: 16px;
}