:root {
  --paper: #fffdf8;
  --ink: #1c1a17;
  --ink-soft: #5a544c;
  --rule: #ddd6c8;
  --accent: #a63d2f;
  --accent-soft: #f3e6e2;
  --ok: #2f6f4a;
  --ok-soft: #e3efe7;
  --measure: 34rem;
}

@media (prefers-color-scheme: dark) {
  :root {
    --paper: #16150f;
    --ink: #ece7dc;
    --ink-soft: #9c948a;
    --rule: #33302a;
    --accent: #e08a76;
    --accent-soft: #2e211d;
    --ok: #7fc79c;
    --ok-soft: #1c2b22;
  }
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  padding: 4rem 1.5rem 8rem;
  background: var(--paper);
  color: var(--ink);
  font-family: "Iowan Old Style", "Palatino Linotype", Palatino, Charter, Georgia, serif;
  font-size: 1.0625rem;
  line-height: 1.62;
  text-rendering: optimizeLegibility;
}

main { max-width: var(--measure); margin: 0 auto; }
main.wide { max-width: 46rem; }

.eyebrow {
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin: 0 0 0.6rem;
}

h1 {
  font-size: 2.1rem;
  line-height: 1.15;
  font-weight: 400;
  letter-spacing: -0.015em;
  margin: 0 0 0.5rem;
}

.standfirst {
  font-size: 1.15rem;
  line-height: 1.5;
  color: var(--ink-soft);
  font-style: italic;
  margin: 0 0 2.5rem;
}

h2 {
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  margin: 3rem 0 0.9rem;
  padding-top: 1.1rem;
  border-top: 1px solid var(--rule);
}

h3 { font-size: 1rem; font-weight: 600; margin: 1.8rem 0 0.5rem; }

p { margin: 0 0 1.1rem; }

a { color: var(--accent); text-underline-offset: 2px; }

ul, ol { margin: 0 0 1.1rem; padding-left: 1.3rem; }
li { margin-bottom: 0.45rem; }

code, .mono {
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  font-size: 0.88em;
}

.note {
  border-left: 2px solid var(--accent);
  padding: 0.1rem 0 0.1rem 1rem;
  margin: 1.5rem 0;
  color: var(--ink-soft);
  font-size: 0.96rem;
}

.note strong { color: var(--ink); }

.steps { counter-reset: step; margin: 1.5rem 0; }

.step {
  counter-increment: step;
  position: relative;
  padding-left: 2.4rem;
  margin-bottom: 1.4rem;
}

.step::before {
  content: counter(step);
  position: absolute;
  left: 0;
  top: 0.05em;
  width: 1.6rem;
  height: 1.6rem;
  border-radius: 50%;
  border: 1px solid var(--rule);
  color: var(--ink-soft);
  font-family: ui-monospace, monospace;
  font-size: 0.8rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.diagrams {
  display: flex;
  flex-wrap: wrap;
  gap: 1.6rem;
  justify-content: center;
  margin: 1.8rem 0;
}

.fretboard { text-align: center; margin: 0; }

.fretboard figcaption {
  font-family: ui-monospace, monospace;
  font-size: 0.8rem;
  color: var(--ink-soft);
  margin-top: 0.4rem;
}

table { width: 100%; border-collapse: collapse; font-size: 0.94rem; margin: 1.4rem 0; }

th, td {
  text-align: left;
  padding: 0.5rem 0.7rem 0.5rem 0;
  border-bottom: 1px solid var(--rule);
  vertical-align: top;
}

th {
  font-family: ui-monospace, monospace;
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-soft);
  font-weight: 400;
}

.table-scroll { overflow-x: auto; }

.check { list-style: none; padding: 0; }
.check li { padding-left: 1.7rem; position: relative; }

.check li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.42em;
  width: 0.85rem;
  height: 0.85rem;
  border: 1px solid var(--ink-soft);
  border-radius: 2px;
}

.quiz {
  border: 1px solid var(--rule);
  border-radius: 4px;
  padding: 1.2rem 1.3rem;
  margin: 1.4rem 0;
}

.quiz-q { font-weight: 600; margin: 0 0 0.9rem; }

.quiz-opt {
  display: block;
  width: 100%;
  text-align: left;
  font: inherit;
  font-size: 0.96rem;
  color: inherit;
  background: transparent;
  border: 1px solid var(--rule);
  border-radius: 3px;
  padding: 0.55rem 0.8rem;
  margin-bottom: 0.5rem;
  cursor: pointer;
}

.quiz-opt:hover:not([disabled]) { border-color: var(--ink-soft); }
.quiz-opt[disabled] { cursor: default; }
.quiz-opt.right { background: var(--ok-soft); border-color: var(--ok); }
.quiz-opt.wrong { background: var(--accent-soft); border-color: var(--accent); }

.quiz-fb { font-size: 0.92rem; color: var(--ink-soft); margin: 0.7rem 0 0; min-height: 1.2em; }

.timer {
  border: 1px solid var(--rule);
  border-radius: 4px;
  padding: 1.2rem 1.3rem;
  margin: 1.4rem 0;
  text-align: center;
}

.timer-clock {
  font-family: ui-monospace, monospace;
  font-size: 3rem;
  line-height: 1;
  letter-spacing: -0.02em;
  margin: 0.3rem 0 0.8rem;
}

.timer-clock.done { color: var(--accent); }

.timer button {
  font: inherit;
  font-size: 0.94rem;
  color: var(--paper);
  background: var(--ink);
  border: 0;
  border-radius: 3px;
  padding: 0.5rem 1.4rem;
  cursor: pointer;
}

.timer-hint { font-size: 0.88rem; color: var(--ink-soft); margin: 0.8rem 0 0; }

.track { list-style: none; padding: 0; margin: 2rem 0; }

.track li {
  position: relative;
  padding: 0 0 1.5rem 2.6rem;
  border-left: 1px solid var(--rule);
  margin: 0 0 0 0.8rem;
}

.track li:last-child { border-left-color: transparent; padding-bottom: 0; }

.track li::before {
  content: "";
  position: absolute;
  left: -0.42rem;
  top: 0.45em;
  width: 0.8rem;
  height: 0.8rem;
  border-radius: 50%;
  background: var(--paper);
  border: 1px solid var(--ink-soft);
}

.track li.done::before { background: var(--ok); border-color: var(--ok); }
.track li.now::before { background: var(--accent); border-color: var(--accent); }
.track li.done { color: var(--ink-soft); }

.track .t-head { font-weight: 600; display: block; }
.track .t-meta { font-family: ui-monospace, monospace; font-size: 0.74rem; letter-spacing: 0.06em; text-transform: uppercase; color: var(--ink-soft); display: block; margin-bottom: 0.15rem; }
.track .t-body { font-size: 0.95rem; color: var(--ink-soft); display: block; margin-top: 0.15rem; }

footer {
  margin-top: 4rem;
  padding-top: 1.2rem;
  border-top: 1px solid var(--rule);
  font-size: 0.9rem;
  color: var(--ink-soft);
}

footer a { color: var(--accent); }

.misura {
  border: 1px solid var(--rule);
  border-radius: 4px;
  padding: 1.2rem 1.3rem;
  margin: 1.4rem 0;
}

.misura-row { display: flex; gap: 0.6rem; align-items: center; flex-wrap: wrap; }

.misura input {
  font: inherit;
  width: 6rem;
  padding: 0.45rem 0.6rem;
  color: var(--ink);
  background: transparent;
  border: 1px solid var(--rule);
  border-radius: 3px;
}

.misura button {
  font: inherit;
  font-size: 0.94rem;
  color: var(--paper);
  background: var(--ink);
  border: 0;
  border-radius: 3px;
  padding: 0.5rem 1.2rem;
  cursor: pointer;
}

.misura-out { margin: 0.8rem 0 0; min-height: 1.2em; }
.misura-hist { font-size: 0.88rem; color: var(--ink-soft); margin: 0.4rem 0 0; }

.prog {
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  font-size: 1.05rem;
  letter-spacing: 0.04em;
  margin: 0.6rem 0 1.2rem;
}

@media (max-width: 30rem) {
  body { padding: 2rem 1rem 5rem; }
  h1 { font-size: 1.7rem; }
}

@media print {
  body { padding: 0; font-size: 11pt; background: #fff; color: #000; }
  .quiz, .timer, .track li { break-inside: avoid; }
  .timer button, .quiz-opt, .misura { display: none; }
  h2 { break-after: avoid; }
  a::after { content: " (" attr(href) ")"; font-size: 0.8em; color: #555; }
  a[href^="#"]::after { content: ""; }
}

.timer button, .misura button, .misura input, .quiz-opt { min-height: 2.75rem; }

.metronomo {
  border: 1px solid var(--rule);
  border-radius: 4px;
  padding: 1.2rem 1.3rem;
  margin: 1.4rem 0;
  text-align: center;
}

.metronomo-bpm {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 0.9rem;
  margin: 0.3rem 0 0.9rem;
  font-family: ui-monospace, monospace;
  color: var(--ink-soft);
}

.metronomo output {
  font-size: 2.4rem;
  line-height: 1;
  color: var(--ink);
  min-width: 3ch;
}

.metronomo-bpm button {
  font: inherit;
  color: var(--ink);
  background: transparent;
  border: 1px solid var(--rule);
  border-radius: 3px;
  min-width: 2.75rem;
  min-height: 2.75rem;
  cursor: pointer;
}

.metronomo-beats { display: flex; justify-content: center; gap: 0.7rem; margin: 0 0 1rem; }

.metronomo-beats span {
  width: 0.9rem;
  height: 0.9rem;
  border-radius: 50%;
  border: 1px solid var(--ink-soft);
}

.metronomo-beats span.on { background: var(--ink); border-color: var(--ink); }
.metronomo-beats span:first-child.on { background: var(--accent); border-color: var(--accent); }

.metronomo-go {
  font: inherit;
  font-size: 0.94rem;
  color: var(--paper);
  background: var(--ink);
  border: 0;
  border-radius: 3px;
  padding: 0.5rem 1.4rem;
  min-height: 2.75rem;
  cursor: pointer;
}

.strum {
  display: grid;
  grid-template-columns: repeat(8, 1fr);
  max-width: 24rem;
  margin: 1.2rem auto 1.6rem;
  font-family: ui-monospace, monospace;
  text-align: center;
}

.strum span { padding: 0.35rem 0; border-bottom: 1px solid var(--rule); }
.strum .c { font-size: 0.78rem; color: var(--ink-soft); border-bottom: 0; }
.strum .d, .strum .u { font-size: 1.15rem; font-weight: 600; }
.strum .x { color: var(--rule); }
.strum .cambio { color: var(--accent); }

.plan td:first-child { font-family: ui-monospace, monospace; white-space: nowrap; }

@media print {
  .metronomo { display: none; }
}