/* WAIvePulse Phone — Beat Match prototype. Dark/neon, inherited from the parent app. */
:root {
  --bg: #0b0f17;
  --panel: #121826;
  --line: #1f2a3d;
  --txt: #e6edf6;
  --dim: #8aa0bd;
  --cyan: #22d3ee;
  --green: #34d399;
  --purple: #a78bfa;
  --magenta: #f472b6;
  --amber: #fbbf24;
}
* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
/* App shell: lock to the viewport, no page scroll — the grid flex-fills the space. */
html, body { height: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--txt);
  font: 15px/1.4 system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  height: 100dvh; overflow: hidden;
  display: flex; flex-direction: column;
  padding: env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left);
}
.top { padding: 10px 14px 4px; flex: 0 0 auto; }
h1 { margin: 0; font-size: 18px; letter-spacing: 2px; color: var(--cyan); }
h1 .proto { font-size: 10px; letter-spacing: 1px; color: var(--magenta); vertical-align: super; }
.meta { color: var(--dim); font-size: 12px; margin-top: 4px; }
.meta b { color: var(--txt); }
main { padding: 6px 10px 10px; flex: 1; min-height: 0; display: flex; flex-direction: column; gap: 8px; }
.panel { background: var(--panel); border: 1px solid var(--line); border-radius: 14px; padding: 12px; }
/* The play panel grows to fill; its grid takes all leftover height. */
main > .panel:first-child { flex: 1; min-height: 0; display: flex; flex-direction: column; }
.row { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.controls { margin-bottom: 12px; }
button {
  background: #1b2536; color: var(--txt); border: 1px solid var(--line);
  border-radius: 10px; padding: 10px 14px; font-size: 14px; cursor: pointer;
  touch-action: manipulation;
}
button:active { transform: translateY(1px); }
button:disabled { opacity: .4; cursor: default; }
button.primary { background: linear-gradient(135deg, var(--cyan), var(--purple)); color: #0b0f17; border: 0; font-weight: 700; }
.lvl { color: var(--dim); font-size: 13px; }
.lvl input { width: 64px; background: #0e1422; color: var(--txt); border: 1px solid var(--line); border-radius: 8px; padding: 8px; font-size: 14px; }
.replays { color: var(--amber); font-size: 13px; margin-left: auto; }

.jumps { margin-bottom: 12px; gap: 6px; }
.jlbl { color: var(--dim); font-size: 12px; }
.jump { padding: 6px 10px; font-size: 14px; line-height: 1; display: flex; flex-direction: column; align-items: center; gap: 2px; }
.jump .jt { font-size: 9px; color: var(--cyan); letter-spacing: .5px; }
.jump .jchk { font-size: 9px; color: var(--green); height: 10px; line-height: 1; }
.jump.passed { border-color: var(--green); }
.meta .stat { color: var(--green); }
.result .dim, .lore .dim { color: var(--dim); }

/* Solo / isolate-voice buttons — outlined in each voice's color. */
.solos { gap: 6px; flex: 0 0 auto; }
.solo { padding: 6px 11px; font-size: 13px; border-color: var(--rc); color: var(--rc); }
.solo:active { background: var(--rc); color: #0b0f17; }

/* Grid fills leftover height; rows share it equally, columns share the width — so all
   16 steps are always on-screen with no scrolling, in any orientation. */
.grid { display: grid; gap: 4px; flex: 1; min-height: 0; grid-auto-rows: 1fr; align-content: stretch; }
.rlabel { display: flex; align-items: center; font-size: 12px; color: var(--dim); min-width: 0; }
.cell {
  min-width: 0; min-height: 0; padding: 0; border-radius: 6px;
  background: #0e1422; border: 1px solid var(--line);
}
.cell.beat { border-color: #2c3a55; }
.cell.on { background: var(--rc, var(--cyan)); border-color: transparent; }
.cell.cur { outline: 2px solid var(--amber); outline-offset: -2px; }
/* diff reveal */
.cell.hit { background: var(--green); border-color: transparent; }
.cell.miss { background: repeating-linear-gradient(45deg, #7f1d1d, #7f1d1d 4px, #450a0a 4px, #450a0a 8px); }
.cell.extra { background: var(--amber); border-color: transparent; }

.result { margin-top: 8px; font-size: 14px; min-height: 20px; flex: 0 0 auto; }
.result .ok { color: var(--green); }
.result .bad { color: #f87171; }
.result .warn { color: var(--amber); }

/* Dev lore: compact, non-growing, clipped to one line so it never forces a scroll. */
.info { flex: 0 0 auto; padding: 8px 12px; }
.info h2 { display: none; }
.lore { color: var(--dim); font-size: 11px; margin: 0; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

/* ── Tutorial overlay ─────────────────────────────────────────────────────────── */
.overlay {
  position: fixed; inset: 0; z-index: 50; display: none;
  background: rgba(6, 9, 15, 0.97); overflow-y: auto;
  padding: env(safe-area-inset-top) 16px calc(env(safe-area-inset-bottom) + 16px);
}
.overlay.show { display: block; }
.tut-inner { max-width: 640px; margin: 0 auto; padding: 14px 0 28px; }
.tut-head { display: flex; align-items: center; justify-content: space-between; }
.tut-head h2 { color: var(--cyan); letter-spacing: 1px; margin: 8px 0; }
.tut-close { font-size: 13px; }
.tut-inner h3 { color: var(--purple); font-size: 14px; margin: 20px 0 6px; display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.tut-p { color: var(--txt); font-size: 14px; margin: 6px 0; }
.tut-p.dim { color: var(--dim); font-size: 13px; }

.tut-tempo { display: inline-flex; gap: 4px; }
.tut-tempo-btn { padding: 4px 9px; font-size: 12px; }
.tut-tempo-btn.on { background: var(--purple); color: #0b0f17; border-color: transparent; }

.tut-strip { display: grid; grid-template-columns: repeat(8, 1fr); gap: 5px; margin: 8px 0; }
.tcell { aspect-ratio: 1; border-radius: 7px; background: #0e1422; border: 1px solid var(--line); }
.tcell.beat { border-color: #2c3a55; }
.tcell.on { background: var(--rc); border-color: transparent; }
.tcell.cur { outline: 2px solid var(--amber); outline-offset: -2px; }

.tut-voices { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 8px; }
.tut-voice { padding: 9px 13px; font-size: 14px; border-color: var(--rc); color: var(--rc); }
.tut-voice:active { background: var(--rc); color: #0b0f17; }

.tut-dyn { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; margin: 8px 0; max-width: 320px; }
.tut-dyn-cell {
  position: relative; height: 80px; border-radius: 9px; background: #0e1422;
  border: 1px solid var(--line); display: flex; align-items: flex-end; overflow: hidden;
}
.tut-dyn-cell.cur { outline: 2px solid var(--amber); outline-offset: -2px; }
.tut-dyn-fill { width: 100%; background: linear-gradient(0deg, var(--cyan), var(--purple)); }
.tut-dyn-lbl { position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; font-size: 12px; color: var(--txt); }
.tut-btn { margin-top: 4px; }
.tut-done { display: block; width: 100%; margin-top: 24px; padding: 14px; }