@import url("https://fonts.googleapis.com/css2?family=Archivo:wght@500;700;900&family=Archivo+Black&display=swap");

/* PPP/01 — Swiss edition. Three inks only: paper, black, red. */
:root {
  --paper: #f4f1ea;
  --ink: #111111;
  --red: #e30613;
  --rule: 4px solid var(--ink);
  --font: "Archivo", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --display: "Archivo Black", "Archivo", "Helvetica Neue", Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font);
  -webkit-tap-highlight-color: transparent;
  user-select: none;
}

/* ——— top bar ——— */
.topbar {
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--ink);
  color: var(--paper);
  font-weight: 700;
  font-size: 12px;
  letter-spacing: 0.14em;
  padding: 10px 16px;
  text-transform: uppercase;
}
.topbar__mark {
  background: var(--red);
  color: var(--paper);
  padding: 2px 8px;
}
.topbar__title { flex: 1; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.topbar__meta { opacity: 0.75; }
@media (max-width: 560px) { .topbar__meta { display: none; } }

.park { max-width: 760px; margin: 0 auto; padding: 0 16px 48px; }

/* ——— hero ——— */
.kicker {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  margin: 28px 0 8px;
  border-left: 12px solid var(--red);
  padding-left: 12px;
}
.hero__title {
  font-family: var(--display);
  font-size: clamp(64px, 17vw, 148px);
  line-height: 0.86;
  letter-spacing: -0.02em;
  margin: 0 0 20px;
  text-transform: uppercase;
}
.hero__park { color: var(--red); }

.transport {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 16px;
  align-items: stretch;
  border-top: var(--rule);
  border-bottom: var(--rule);
  padding: 16px 0;
}
.play {
  font-family: var(--display);
  font-size: 28px;
  letter-spacing: 0.02em;
  background: var(--red);
  color: var(--paper);
  border: 4px solid var(--ink);
  padding: 14px 28px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 76px;
  transition: transform 0.08s ease;
}
.play:active { transform: scale(0.96); }
.play[aria-pressed="true"] { background: var(--ink); }
.play__icon { font-size: 22px; }
.tempo-readout { display: flex; align-items: baseline; gap: 12px; justify-content: flex-end; }
.tempo-readout__num {
  font-family: var(--display);
  font-size: clamp(56px, 12vw, 88px);
  line-height: 1;
  font-variant-numeric: tabular-nums;
}
.tempo-readout__unit { font-size: 11px; font-weight: 700; letter-spacing: 0.16em; line-height: 1.6; }
.hero__rules {
  grid-column: 1 / -1;
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.14em;
}
.hero__rules p { margin: 0; }

/* ——— blocks ——— */
.block { margin-top: 36px; }
.block__head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  border-bottom: var(--rule);
  padding-bottom: 8px;
  margin-bottom: 16px;
}
.block__num {
  font-family: var(--display);
  background: var(--ink);
  color: var(--paper);
  font-size: 14px;
  padding: 2px 10px;
}
.block:nth-of-type(3) .block__num { background: var(--red); }
.block__title { font-family: var(--display); font-size: 26px; margin: 0; letter-spacing: 0.01em; }
.block__note { margin-left: auto; font-size: 10px; font-weight: 700; letter-spacing: 0.14em; text-align: right; }

/* ——— lanes ——— */
.lanes { display: grid; gap: 20px; }
.lane { border: var(--rule); background: var(--paper); }
.lane__head {
  display: flex;
  align-items: center;
  gap: 10px;
  border-bottom: var(--rule);
  padding: 8px 12px;
  font-weight: 900;
  letter-spacing: 0.08em;
  font-size: 14px;
}
.lane__idx { background: var(--red); color: var(--paper); padding: 0 8px; font-size: 13px; }
.lane:nth-child(2) .lane__idx { background: var(--ink); }
.lane__voice { font-size: 11px; opacity: 0.65; letter-spacing: 0.14em; }
.lane__len { margin-left: auto; font-size: 11px; letter-spacing: 0.14em; }
.layer {
  margin-left: 4px;
  font-family: var(--font);
  font-weight: 900;
  font-size: 11px;
  letter-spacing: 0.1em;
  border: 3px solid var(--ink);
  background: var(--paper);
  color: var(--ink);
  padding: 4px 10px;
  cursor: pointer;
}
.layer[aria-pressed="true"] { background: var(--ink); color: var(--paper); }
.lane--off .lane__cells { opacity: 0.35; }
.lane__cells {
  display: grid;
  gap: 8px;
  padding: 12px;
}
.cell {
  appearance: none;
  border: 3px solid var(--ink);
  background: var(--paper);
  min-height: 64px;
  font-family: var(--display);
  font-size: 18px;
  cursor: pointer;
  position: relative;
  transition: transform 0.07s ease, background 0.07s ease;
  touch-action: manipulation;
}
.cell:active { transform: scale(0.94); }
.cell .n {
  position: absolute;
  top: 4px;
  left: 7px;
  font-family: var(--font);
  font-weight: 700;
  font-size: 10px;
  letter-spacing: 0.1em;
}
.cell[aria-pressed="true"] { background: var(--ink); color: var(--paper); }
.lane:first-child .cell[aria-pressed="true"] { background: var(--red); border-color: var(--ink); color: var(--paper); }
.cell.now { outline: 5px solid var(--red); outline-offset: -5px; }
.cell.hit { animation: pop 0.22s ease; }
@keyframes pop {
  0% { transform: scale(1); }
  40% { transform: scale(0.9); }
  100% { transform: scale(1); }
}

/* ——— rows / buttons ——— */
.row { display: flex; align-items: center; gap: 12px; margin-top: 16px; flex-wrap: wrap; }
.btn {
  font-family: var(--font);
  font-weight: 900;
  font-size: 13px;
  letter-spacing: 0.1em;
  border: 3px solid var(--ink);
  background: var(--paper);
  color: var(--ink);
  padding: 10px 16px;
  cursor: pointer;
  transition: transform 0.07s ease;
  touch-action: manipulation;
}
.btn:active { transform: scale(0.94); }
.btn--red { background: var(--red); color: var(--paper); }
.btn[aria-pressed="true"] { background: var(--ink); color: var(--paper); }
.msg { font-size: 11px; font-weight: 700; letter-spacing: 0.14em; min-height: 16px; }

/* ——— tempo track (click only — no drag) ——— */
.tempo {
  position: relative;
  height: 72px;
  border: var(--rule);
  background: var(--paper);
  cursor: pointer;
  overflow: hidden;
  touch-action: manipulation;
}
.tempo__fill {
  position: absolute;
  inset: 0 auto 0 0;
  width: 50%;
  background: var(--red);
}
.tempo__ticks {
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(
    to right,
    transparent 0,
    transparent calc(100% / 24 - 3px),
    var(--paper) calc(100% / 24 - 3px),
    var(--paper) calc(100% / 24)
  );
  mix-blend-mode: normal;
  opacity: 0.9;
}
.tempo__knob {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 6px;
  background: var(--ink);
  left: 50%;
  transform: translateX(-50%);
}

/* ——— link box ——— */
.linkbox {
  border: var(--rule);
  padding: 12px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.04em;
  word-break: break-all;
  cursor: pointer;
  margin: 0;
  min-height: 48px;
  background: var(--paper);
}
.linkbox:active { background: var(--ink); color: var(--paper); }

.footer {
  margin-top: 40px;
  border-top: var(--rule);
  padding-top: 12px;
  display: flex;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.16em;
}

@media (max-width: 480px) {
  .transport { grid-template-columns: 1fr; }
  .tempo-readout { justify-content: flex-start; }
  .block__note { display: none; }
  .cell { min-height: 56px; }
}