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

html {
  color-scheme: light;
}

body {
  min-block-size: 100dvh;
  font-family: var(--font-main);
  background: var(--bg);
  color: var(--text);
  padding: 14px;
  overflow-wrap: anywhere;
  word-break: normal;
  line-break: strict;
  font-variant-numeric: tabular-nums;
}

.scale-app {
  width: min(100%, 800px);
  margin: 0 auto;
  background: rgba(255, 255, 255, 0.48);
  backdrop-filter: blur(30px);
  -webkit-backdrop-filter: blur(30px);
  border: 1px solid rgba(255, 255, 255, 0.5);
  border-radius: 12px;
  box-shadow: 0 12px 40px rgba(30, 50, 70, 0.08);
  overflow: hidden;
}

.scale-app__header {
  display: flex;
  gap: 12px;
  align-items: flex-end;
  padding: 14px 16px 12px;
  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
  background: linear-gradient(135deg, #4d82a6 0%, #6296b5 100%);
  color: #fff;
}

.scale-app__header-main {
  flex: 1;
  min-width: 0;
}

.scale-app__body {
  padding: 16px;
  display: grid;
  gap: 16px;
}

.scale-app__footer {
  display: grid;
  justify-items: center;
  padding: 12px 16px 24px;
  color: var(--muted);
  font-size: 11px;
  line-height: 1.6;
  text-align: center;
}

.scale-app__footer p {
  margin-bottom: 4px;
}

.scale-app__footer-link {
  color: var(--accent-blue);
  text-decoration: none;
  font-weight: 600;
}

.eyebrow {
  font-size: 11px;
  line-height: 1;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  font-weight: 800;
  margin-bottom: 12px;
  color: rgba(255, 255, 255, 0.85);
}

.accidental {
  font-family: "Helvetica Neue", Arial, sans-serif;
  display: inline-block;
  line-height: inherit;
}

.accidental-sharp {
  font-size: 0.82em;
  margin-inline-start: 0.5px;
  margin-inline-end: 0.5px;
  transform: translateY(-0.1em);
  display: inline-block;
  line-height: 1;
}

.accidental-flat {
  font-size: 0.82em;
  margin-inline-start: 0.5px;
  margin-inline-end: -1px;
  transform: translateY(-0.04em);
  display: inline-block;
  line-height: 1;
}

.degree-label {
  display: inline-block;
  line-height: 1;
  direction: ltr;
  unicode-bidi: isolate;
  white-space: nowrap;
  transition: transform 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.opt-letter {
  transform: translate(0.5px, 0.4px);
}

.opt-number {
  transform: translate(-0.5px, 0.4px);
}

.has-accidental .opt-letter {
  transform: translate(-0.8px, 0.4px);
  letter-spacing: -0.4px;
}

.double-accidental .opt-letter {
  transform: translate(-1.5px, 0.4px);
  letter-spacing: -0.8px;
}

.has-accidental .opt-number {
  transform: translate(-2px, 0.4px);
  letter-spacing: -0.6px;
}

.double-accidental .opt-number {
  transform: translate(-2.8px, 0.4px);
  letter-spacing: -1.2px;
}

@media (max-width: 640px) {
  body {
    padding: 0;
  }

  .scale-app {
    width: 100%;
    min-height: 100dvh;
    border-radius: 0;
  }

  .scale-app__header {
    align-items: center;
    padding: 12px;
  }
}