@import url("https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;600;700&family=Playfair+Display:wght@600;700&display=swap");

:root {
  --paper: #f4efe4;
  --paper-deep: #e9e0d0;
  --ink: #24231f;
  --muted: #777166;
  --green: #315f4a;
  --green-dark: #244b39;
  --green-pale: #dbe6dc;
  --red: #a4463e;
  --line: #d9cfbd;
  --white: #fffdf8;
  font-family: "DM Sans", system-ui, sans-serif;
  color: var(--ink);
  background: var(--paper);
  font-synthesis: none;
}

* {
  box-sizing: border-box;
}

body {
  min-width: 320px;
  min-height: 100vh;
  margin: 0;
  background:
    radial-gradient(circle at 15% 15%, rgb(255 255 255 / 45%), transparent 28rem),
    repeating-linear-gradient(0deg, rgb(67 54 36 / 1.5%) 0, transparent 1px, transparent 4px),
    var(--paper);
}

button,
select,
input {
  font: inherit;
}

button {
  color: inherit;
}

.app {
  display: flex;
  width: min(100%, 760px);
  min-height: 100vh;
  margin: 0 auto;
  padding: 0 32px;
  flex-direction: column;
}

.masthead {
  display: flex;
  height: 84px;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--line);
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: "Playfair Display", Georgia, serif;
  font-size: 20px;
  font-weight: 700;
}

.brand-mark {
  display: grid;
  width: 34px;
  height: 34px;
  place-items: center;
  border-radius: 50%;
  color: var(--white);
  background: var(--green);
  font-family: Georgia, serif;
  font-size: 20px;
}

.icon-button {
  display: grid;
  width: 42px;
  height: 42px;
  padding: 10px;
  place-items: center;
  border: 0;
  border-radius: 50%;
  background: transparent;
  cursor: pointer;
  transition: background 160ms ease, transform 160ms ease;
}

.icon-button:hover,
.icon-button[aria-expanded="true"] {
  background: var(--paper-deep);
}

.icon-button:active {
  transform: scale(.94);
}

.icon-button svg {
  width: 22px;
  fill: none;
  stroke: currentcolor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.6;
}

.settings {
  display: grid;
  padding: 20px 0;
  grid-template-columns: repeat(3, minmax(0, 1fr)) auto;
  align-items: end;
  gap: 16px;
  border-bottom: 1px solid var(--line);
}

.settings[hidden] {
  display: none;
}

.settings label {
  display: grid;
  min-width: 0;
  gap: 7px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .04em;
  text-transform: uppercase;
}

.settings select {
  width: 100%;
  min-width: 0;
  height: 42px;
  padding: 0 36px 0 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--ink);
  background: var(--white);
}

.settings .toggle-label {
  display: flex;
  height: 42px;
  align-items: center;
  gap: 8px;
  color: var(--ink);
  text-transform: none;
  letter-spacing: 0;
  white-space: nowrap;
}

.toggle-label input {
  width: 17px;
  height: 17px;
  accent-color: var(--green);
}

.quiz {
  display: flex;
  padding: 70px 0 56px;
  flex: 1;
  align-items: center;
  flex-direction: column;
  text-align: center;
}

.eyebrow {
  margin: 0 0 15px;
  color: var(--green);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .18em;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  font-family: "Playfair Display", Georgia, serif;
  font-size: clamp(40px, 7vw, 58px);
  letter-spacing: -.025em;
  line-height: 1.05;
}

.instructions {
  margin: 17px 0 40px;
  color: var(--muted);
  font-size: 16px;
}

.play-button {
  display: flex;
  min-width: 180px;
  padding: 12px 20px 12px 12px;
  align-items: center;
  gap: 13px;
  border: 0;
  border-radius: 999px;
  color: var(--white);
  background: var(--green);
  box-shadow: 0 7px 20px rgb(49 95 74 / 22%);
  cursor: pointer;
  text-align: left;
  transition: background 160ms ease, transform 160ms ease, box-shadow 160ms ease;
}

.play-button:hover {
  background: var(--green-dark);
  box-shadow: 0 9px 24px rgb(49 95 74 / 28%);
  transform: translateY(-2px);
}

.play-button:active,
.play-button.playing {
  transform: scale(.97);
}

.play-icon {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  border-radius: 50%;
  background: rgb(255 255 255 / 16%);
}

.play-icon svg {
  width: 24px;
  fill: currentcolor;
}

.play-button strong,
.play-button small {
  display: block;
}

.play-button strong {
  font-size: 15px;
}

.play-button small {
  margin-top: 1px;
  color: rgb(255 255 255 / 68%);
  font-size: 10px;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.feedback {
  min-height: 28px;
  margin: 26px 0 14px;
  font-family: "Playfair Display", Georgia, serif;
  font-size: 19px;
  font-weight: 700;
}

.feedback.correct {
  color: var(--green);
}

.feedback.incorrect {
  color: var(--red);
}

.answers {
  display: grid;
  width: 100%;
  grid-template-columns: repeat(auto-fit, minmax(76px, 1fr));
  gap: 10px;
}

.answer {
  min-height: 58px;
  padding: 8px 6px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: rgb(255 253 248 / 65%);
  cursor: pointer;
  font-family: "Playfair Display", Georgia, serif;
  font-size: 20px;
  font-weight: 700;
  transition: border 140ms ease, background 140ms ease, transform 140ms ease;
}

.answer:hover:not(:disabled) {
  border-color: var(--green);
  background: var(--white);
  transform: translateY(-2px);
}

.answer:disabled {
  cursor: default;
}

.answer.correct {
  border-color: var(--green);
  color: var(--green-dark);
  background: var(--green-pale);
}

.answer.incorrect {
  border-color: #ca8f89;
  color: var(--red);
  background: #f2ddda;
}

.answer .accidental {
  font-family: "DM Sans", sans-serif;
  font-size: 13px;
  vertical-align: super;
}

.answer .octave {
  margin-left: 2px;
  color: var(--muted);
  font-family: "DM Sans", sans-serif;
  font-size: 12px;
  font-weight: 600;
}

.next-button {
  margin-top: 22px;
  padding: 11px 18px;
  border: 0;
  border-bottom: 1px solid var(--ink);
  background: transparent;
  cursor: pointer;
  font-size: 14px;
  font-weight: 700;
}

.next-button span {
  margin-left: 8px;
}

.scorebar {
  display: flex;
  min-height: 88px;
  padding: 16px 0;
  align-items: center;
  gap: 26px;
  border-top: 1px solid var(--line);
}

.scorebar > div:not(.score-divider) {
  display: grid;
}

.score-number {
  font-family: "Playfair Display", Georgia, serif;
  font-size: 24px;
  font-weight: 700;
  line-height: 1;
}

.score-label {
  margin-top: 4px;
  color: var(--muted);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.score-divider {
  width: 1px;
  height: 34px;
  background: var(--line);
}

.reset-button {
  margin-left: auto;
  padding: 8px;
  border: 0;
  color: var(--muted);
  background: transparent;
  cursor: pointer;
  font-size: 12px;
  text-decoration: underline;
  text-underline-offset: 3px;
}

button:focus-visible,
select:focus-visible,
input:focus-visible {
  outline: 3px solid rgb(49 95 74 / 28%);
  outline-offset: 3px;
}

@media (max-width: 560px) {
  .app {
    padding: 0 20px;
  }

  .masthead {
    height: 70px;
  }

  .settings {
    grid-template-columns: 1fr 1fr;
  }

  .settings .toggle-label {
    grid-column: 1 / -1;
  }

  .quiz {
    padding-top: 48px;
  }

  .instructions {
    margin-bottom: 30px;
  }

  .answers {
    grid-template-columns: repeat(4, 1fr);
  }

  .answer {
    min-height: 52px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition: none !important;
  }
}