:root {
  --ink: #dfe6f2;
  --ink-dim: #5f6b80;
  --accent: #6fb7ff;
  --bg: #04060c;
}

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

html, body {
  height: 100%;
  overflow: hidden;
  background: var(--bg);
  color: var(--ink);
  font-family: 'Cormorant Garamond', Georgia, serif;
  -webkit-font-smoothing: antialiased;
}

#stage {
  position: fixed;
  inset: 0;
  display: block;
}

/* ---- menu overlay ---- */
#overlay {
  position: fixed;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.3rem;
  text-align: center;
  padding: 1rem;
  background: radial-gradient(ellipse 85% 65% at 50% 40%, rgba(13, 22, 41, 0.6), rgba(4, 6, 12, 0.93) 75%);
  backdrop-filter: blur(2px);
  transition: opacity 1.2s ease, visibility 1.2s;
  z-index: 10;
}
#overlay.hidden { opacity: 0; visibility: hidden; pointer-events: none; }

#overlay h1 {
  font-weight: 500;
  font-size: clamp(2.4rem, 7vw, 4.6rem);
  letter-spacing: 0.05em;
  line-height: 1.05;
  text-shadow: 0 0 60px rgba(111, 183, 255, 0.25);
  animation: rise 1.1s 0.1s ease both;
}
#overlay h1 .accent { font-style: italic; color: var(--accent); }

#overlay .subtitle {
  font-style: italic;
  font-size: clamp(0.95rem, 2.2vw, 1.25rem);
  letter-spacing: 0.14em;
  color: #8fa3c4;
  animation: rise 1.1s 0.25s ease both;
}

/* ---- mode selector ---- */
#modes {
  display: flex;
  gap: 0.25rem;
  margin-top: 1.2rem;
  padding: 0.3rem;
  border: 1px solid rgba(111, 183, 255, 0.25);
  border-radius: 999px;
  background: rgba(5, 8, 16, 0.55);
  animation: rise 1.1s 0.35s ease both;
}
.mode-btn {
  border: none;
  border-radius: 999px;
  padding: 0.5rem 1.35rem;
  background: transparent;
  color: #8fa3c4;
  font-family: inherit;
  font-size: 1.02rem;
  letter-spacing: 0.07em;
  cursor: pointer;
  transition: background 0.25s, color 0.25s;
}
.mode-btn:hover { color: var(--ink); }
.mode-btn.on {
  background: rgba(111, 183, 255, 0.2);
  color: var(--ink);
  text-shadow: 0 0 12px rgba(111, 183, 255, 0.4);
}

#mode-hint {
  margin-top: 0.55rem;
  min-height: 1.1rem;
  font-style: italic;
  font-size: 0.88rem;
  letter-spacing: 0.06em;
  color: #8fa3c4;
  animation: rise 1.1s 0.4s ease both;
}

/* ---- piece cards ---- */
#pieces {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1rem;
  margin-top: 2.2rem;
  max-width: 56rem;
  max-height: 56vh;
  overflow-y: auto;
  padding: 0.4rem;
  scrollbar-width: thin;
  scrollbar-color: rgba(111, 183, 255, 0.25) transparent;
  animation: rise 1.1s 0.45s ease both;
}

.card {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  text-align: left;
  gap: 0.18rem;
  width: min(15.5rem, 84vw);
  padding: 1.3rem 1.4rem 1.1rem;
  border: 1px solid color-mix(in srgb, var(--accent) 28%, transparent);
  border-radius: 10px;
  background: linear-gradient(160deg, color-mix(in srgb, var(--accent) 9%, transparent), rgba(5, 8, 16, 0.65) 60%);
  color: var(--ink);
  font-family: inherit;
  cursor: pointer;
  position: relative;
  transition: transform 0.35s ease, border-color 0.35s, box-shadow 0.35s;
}
.card:hover, .card:focus-visible {
  transform: translateY(-5px);
  border-color: color-mix(in srgb, var(--accent) 65%, transparent);
  box-shadow: 0 14px 44px -16px color-mix(in srgb, var(--accent) 45%, transparent);
  outline: none;
}

.card .mood {
  font-size: 0.72rem;
  letter-spacing: 0.42em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.35rem;
}
.card .title {
  font-size: 1.55rem;
  font-weight: 500;
  line-height: 1.1;
}
.card .composer {
  font-size: 0.98rem;
  color: #9db0cf;
  letter-spacing: 0.06em;
}
.card .marking {
  font-style: italic;
  font-size: 0.88rem;
  color: var(--ink-dim);
  margin-top: 0.3rem;
}
.card .duration {
  position: absolute;
  top: 1.15rem;
  right: 1.25rem;
  font-size: 0.85rem;
  color: var(--ink-dim);
  font-variant-numeric: tabular-nums;
}

/* ---- library explorer ---- */
#library-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.6rem;
  margin-top: 1.5rem;
  animation: rise 1.1s 0.55s ease both;
}
#explore-btn,
#open-midi-btn,
#playground-btn {
  padding: 0.55rem 1.3rem;
  border-radius: 999px;
  border: 1px solid rgba(111, 183, 255, 0.3);
  background: rgba(111, 183, 255, 0.06);
  color: #9db0cf;
  font-family: inherit;
  font-style: italic;
  font-size: 0.98rem;
  letter-spacing: 0.08em;
  cursor: pointer;
  transition: background 0.3s, color 0.3s, border-color 0.3s;
}
#explore-btn:hover,
#open-midi-btn:hover,
#playground-btn:hover { background: rgba(111, 183, 255, 0.16); color: var(--ink); border-color: rgba(111, 183, 255, 0.6); }

#overlay.exploring #pieces,
#overlay.exploring #library-actions,
#overlay.exploring #modes,
#overlay.exploring #mode-hint,
#overlay.exploring .subtitle { display: none; }

#explorer {
  width: min(46rem, 92vw);
  margin-top: 1.6rem;
  text-align: left;
}
#explorer .ex-head {
  display: flex;
  gap: 0.6rem;
  margin-bottom: 0.8rem;
}
#ex-back {
  width: 42px;
  border-radius: 8px;
  border: 1px solid rgba(111, 183, 255, 0.3);
  background: rgba(111, 183, 255, 0.07);
  color: var(--ink);
  font-size: 1.1rem;
  cursor: pointer;
}
#ex-search {
  flex: 1;
  padding: 0.6rem 1rem;
  border-radius: 8px;
  border: 1px solid rgba(111, 183, 255, 0.25);
  background: rgba(5, 8, 16, 0.7);
  color: var(--ink);
  font-family: inherit;
  font-size: 1.05rem;
  outline: none;
}
#ex-search:focus { border-color: rgba(111, 183, 255, 0.6); }

#ex-list {
  max-height: 48vh;
  overflow-y: auto;
  border: 1px solid rgba(111, 183, 255, 0.14);
  border-radius: 10px;
  background: rgba(4, 7, 14, 0.55);
  scrollbar-width: thin;
  scrollbar-color: rgba(111, 183, 255, 0.25) transparent;
}
.ex-row {
  display: flex;
  align-items: baseline;
  gap: 0.7rem;
  width: 100%;
  padding: 0.5rem 0.9rem;
  border: none;
  border-bottom: 1px solid rgba(111, 183, 255, 0.07);
  background: transparent;
  color: var(--ink);
  font-family: inherit;
  font-size: 1rem;
  text-align: left;
  cursor: pointer;
  transition: background 0.2s;
}
.ex-row:hover { background: rgba(111, 183, 255, 0.09); }
.ex-row .t { flex: 0 1 auto; font-size: 1.08rem; }
.ex-row .c { color: #9db0cf; font-size: 0.92rem; }
.ex-row .i { margin-left: auto; color: var(--ink-dim); font-style: italic; font-size: 0.85rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; max-width: 14rem; }
#ex-count {
  margin-top: 0.6rem;
  text-align: center;
  font-style: italic;
  font-size: 0.85rem;
  color: var(--ink-dim);
}

#tribute {
  margin: 1.4rem auto 0;
  max-width: 38rem;
  text-align: center;
  font-style: italic;
  font-size: 0.95rem;
  line-height: 1.65;
  color: #8fa3c4;
}
#tribute a { color: var(--accent); text-decoration: none; border-bottom: 1px solid color-mix(in srgb, var(--accent) 40%, transparent); }
#tribute a:hover { border-bottom-color: var(--accent); }
#tribute .tribute-sign {
  margin-top: 0.7rem;
  letter-spacing: 0.18em;
  font-size: 0.85rem;
  color: var(--ink-dim);
}

#overlay .credit {
  margin-top: 0.5rem;
  font-style: italic;
  font-size: 0.82rem;
  letter-spacing: 0.1em;
  color: #4a5569;
  animation: rise 1.1s 0.75s ease both;
}
#overlay .credit a { color: #6b7d9e; text-decoration: none; }
#overlay .credit a:hover { color: var(--accent); }

#overlay .hint {
  margin-top: 2rem;
  font-size: 0.85rem;
  letter-spacing: 0.18em;
  color: #3d465a;
  animation: rise 1.1s 0.65s ease both;
}

@keyframes rise {
  from { opacity: 0; transform: translateY(14px); }
  to { opacity: 1; transform: none; }
}

/* ---- play-mode HUD ---- */
#playhud[hidden] { display: none; }
#playhud {
  position: fixed;
  left: 50%;
  top: 20%;
  transform: translateX(-50%);
  z-index: 5;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.1rem;
  text-align: center;
  pointer-events: none;
  font-variant-numeric: tabular-nums;
}
#hud-judge {
  min-height: 2.6rem;
  font-size: 2.1rem;
  font-style: italic;
  letter-spacing: 0.16em;
}
#hud-judge.perfect { text-shadow: 0 0 26px rgba(255, 226, 138, 0.85), 0 0 60px rgba(255, 226, 138, 0.4); }
#hud-judge.perfect { color: #ffe28a; text-shadow: 0 0 14px rgba(255, 226, 138, 0.6); }
#hud-judge.good { color: #8fd8ff; text-shadow: 0 0 12px rgba(143, 216, 255, 0.5); }
#hud-judge.miss, #hud-judge.extra { color: #ff8d9e; }
#hud-judge.wait {
  color: #9fc4ff;
  text-shadow: 0 0 10px rgba(159, 196, 255, 0.4);
  font-style: normal;
  letter-spacing: 0.08em;
}
#hud-score {
  font-size: 1.7rem;
  color: var(--ink);
  text-shadow: 0 0 18px color-mix(in srgb, var(--accent) 40%, transparent);
}
#hud-combo {
  min-height: 1.2rem;
  font-size: 1.05rem;
  color: var(--accent);
  letter-spacing: 0.1em;
}

/* ---- shared recording modal ---- */
#shared-modal[hidden] { display: none; }
#shared-modal {
  position: fixed;
  inset: 0;
  z-index: 20;
  display: grid;
  place-items: center;
  background: rgba(2, 3, 8, 0.72);
  backdrop-filter: blur(4px);
}
.sm-box {
  position: relative;
  max-width: 26rem;
  padding: 2.2rem 2.6rem 2rem;
  border-radius: 16px;
  border: 1px solid color-mix(in srgb, var(--accent) 45%, transparent);
  background: linear-gradient(160deg, rgba(17, 28, 52, 0.95), rgba(5, 8, 16, 0.97));
  box-shadow: 0 0 70px -12px color-mix(in srgb, var(--accent) 50%, transparent);
  text-align: center;
  animation: rise 0.7s ease both;
}
.sm-eyebrow {
  font-size: 0.78rem;
  letter-spacing: 0.42em;
  text-transform: uppercase;
  color: var(--accent);
}
.sm-box h2 {
  margin-top: 0.5rem;
  font-weight: 500;
  font-size: 1.7rem;
  line-height: 1.15;
}
#sm-meta {
  margin-top: 0.4rem;
  font-style: italic;
  color: #8fa3c4;
}
.sm-actions {
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  margin-top: 1.4rem;
}
.sm-actions button {
  padding: 0.65rem 1.2rem;
  border-radius: 999px;
  border: 1px solid color-mix(in srgb, var(--accent) 45%, transparent);
  background: color-mix(in srgb, var(--accent) 14%, transparent);
  color: var(--ink);
  font-family: inherit;
  font-size: 1.02rem;
  cursor: pointer;
  transition: background 0.25s, border-color 0.25s;
}
.sm-actions button:hover {
  background: color-mix(in srgb, var(--accent) 28%, transparent);
  border-color: var(--accent);
}
#sm-close {
  position: absolute;
  top: 0.55rem;
  right: 0.8rem;
  border: none;
  background: transparent;
  color: var(--ink-dim);
  font-size: 1.4rem;
  cursor: pointer;
}
#sm-close:hover { color: var(--ink); }

/* ---- playground bar ---- */
#pg-bar[hidden] { display: none; }
#pg-bar {
  position: fixed;
  top: 3.4rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 6;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.8rem;
  border-radius: 999px;
  border: 1px solid color-mix(in srgb, var(--accent) 25%, transparent);
  background: rgba(5, 8, 16, 0.75);
  backdrop-filter: blur(6px);
  font-size: 0.92rem;
}
#pg-bar button,
#pg-bar a {
  border: none;
  background: transparent;
  color: var(--ink);
  font-family: inherit;
  font-size: 0.92rem;
  cursor: pointer;
  text-decoration: none;
  padding: 0.2rem 0.5rem;
  border-radius: 999px;
  transition: background 0.25s, color 0.25s;
}
#pg-bar button:hover,
#pg-bar a:hover { background: color-mix(in srgb, var(--accent) 16%, transparent); color: var(--accent); }
#pg-status {
  font-style: italic;
  font-size: 0.82rem;
  color: var(--ink-dim);
  max-width: 24rem;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.shared-card {
  outline: 1px solid color-mix(in srgb, var(--accent) 45%, transparent);
  animation: shared-glow 2.2s ease-in-out infinite;
}
@keyframes shared-glow {
  0%, 100% { box-shadow: 0 0 0 rgba(0, 0, 0, 0); }
  50% { box-shadow: 0 0 32px -6px color-mix(in srgb, var(--accent) 60%, transparent); }
}

/* ---- playing caption ---- */
#caption {
  position: fixed;
  left: 0;
  right: 0;
  top: 0;
  display: flex;
  justify-content: space-between;
  padding: 0.6rem 1.1rem 0;
  font-size: 0.85rem;
  letter-spacing: 0.12em;
  font-style: italic;
  color: rgba(95, 107, 128, 0.85);
  opacity: 0;
  transition: opacity 1.6s ease 0.8s;
  pointer-events: none;
  z-index: 5;
}
body.playing #caption { opacity: 1; }

#caption .dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 3px;
  vertical-align: baseline;
}
#caption .dot-r { background: var(--hand-r, var(--accent)); box-shadow: 0 0 8px var(--hand-r, var(--accent)); }
#caption .dot-l { background: var(--hand-l, #45dca2); box-shadow: 0 0 8px var(--hand-l, #45dca2); }

/* ---- player controls ---- */
#controls {
  position: fixed;
  top: 0.45rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.3rem 0.55rem;
  border-radius: 999px;
  border: 1px solid color-mix(in srgb, var(--accent) 22%, transparent);
  background: rgba(5, 8, 16, 0.55);
  backdrop-filter: blur(6px);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.8s ease 0.6s, visibility 0.8s 0.6s, border-color 0.4s;
  z-index: 6;
}
body.playing #controls { opacity: 0.45; visibility: visible; }
body.playing #controls:hover { opacity: 1; }

#controls button {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border: none;
  border-radius: 50%;
  background: transparent;
  color: var(--ink);
  cursor: pointer;
  transition: background 0.25s, color 0.25s;
}
#controls button:hover { background: color-mix(in srgb, var(--accent) 18%, transparent); color: var(--accent); }
#btn-play { border: 1px solid color-mix(in srgb, var(--accent) 35%, transparent); }

.ctl-sep {
  width: 1px;
  height: 18px;
  margin: 0 0.25rem;
  background: color-mix(in srgb, var(--accent) 28%, transparent);
}
#controls .ctl-mode { width: 30px; height: 30px; font-size: 0.95rem; }
#controls .ctl-mode.on,
#controls #btn-metronome.on {
  color: var(--accent);
  background: color-mix(in srgb, var(--accent) 16%, transparent);
}

#beat-select,
#kit-select,
#rate-select {
  border: none;
  background: transparent;
  color: var(--ink-dim);
  font-family: inherit;
  font-size: 0.85rem;
  font-style: italic;
  cursor: pointer;
  outline: none;
  max-width: 6rem;
}
#beat-select.on,
#kit-select.on,
#rate-select.on { color: var(--accent); }
#beat-select option,
#kit-select option,
#rate-select option { background: #0a0d15; color: var(--ink); font-style: normal; }
#kit-select[hidden] { display: none; }

/* ---- voices / tracks panel ---- */
#voices-panel[hidden] { display: none; }
#voices-panel {
  position: fixed;
  top: 3.6rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 7;
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 16rem;
  max-width: 26rem;
  max-height: 42vh;
  overflow-y: auto;
  padding: 0.45rem;
  border-radius: 12px;
  border: 1px solid color-mix(in srgb, var(--accent) 25%, transparent);
  background: rgba(5, 8, 16, 0.88);
  backdrop-filter: blur(8px);
  scrollbar-width: thin;
}
.v-row {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.35rem 0.6rem;
  border: none;
  border-radius: 8px;
  background: transparent;
  color: var(--ink);
  font-family: inherit;
  font-size: 0.98rem;
  text-align: left;
  cursor: pointer;
}
.v-row:hover { background: color-mix(in srgb, var(--accent) 12%, transparent); }
.v-row.mine {
  background: color-mix(in srgb, var(--accent) 18%, transparent);
  color: var(--accent);
}
.v-row.muted .v-name { color: var(--ink-dim); text-decoration: line-through; }
.v-name { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.v-mute {
  flex: none;
  width: 22px;
  border: none;
  background: transparent;
  color: var(--accent);
  font-size: 0.9rem;
  cursor: pointer;
}
.v-row.muted .v-mute { color: var(--ink-dim); }

#btn-play .ic-play { display: none; }
body.paused #btn-play .ic-pause { display: none; }
body.paused #btn-play .ic-play { display: block; margin-left: 2px; }