:root {
  --bg:      #f3f2f9;
  --surf:    #ffffff;
  --surf2:   #ebecec;
  --border:  #8d8f8e;
  --accent:  #313231;
  --teal:    #0b9080;
  --red:     #de3a3a;
  --gold:    #c07d08;
  --violet:  #4a39d8;
  --txt:     #1a1730;
  --txt2:    #4a4470;
  --muted:   #6b6c6b;
}

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

body {
  background: var(--bg);
  color: var(--txt);
  font-family: Helvetica, Arial, sans-serif;
  font-size: 15px;
  line-height: 1.5;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
}

/* ── HEADER ────────────────────────────────────────────── */
header {
  width: 100%;
  background: var(--surf);
  border-bottom: 1px solid var(--border);
  padding: 1.4rem 2rem 1.2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.hd-left { display: flex; align-items: center; gap: 1rem; }
.logo {
  width: 40px; height: 40px;
  background: var(--accent);
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.3rem; color: #fff; flex-shrink: 0;
}
h1 { font-size: 1.15rem; font-weight: 700; letter-spacing: .02em; color: var(--txt); }
.subtitle { font-size: .8rem; color: var(--muted); margin-top: .1rem; }
.hd-right { font-size: .78rem; color: var(--muted); }
.hd-right a { color: var(--accent); text-decoration: none; font-weight: 500; }
.hd-right a:hover { text-decoration: underline; }

/* ── MAIN ──────────────────────────────────────────────── */
.main { width: 100%; max-width: 960px; padding: 1.6rem 1.6rem 3rem; display: flex; flex-direction: column; gap: 1.2rem; }

/* ── OSCILLOSCOPE ──────────────────────────────────────── */
.viz-wrap {
  border-radius: 12px; overflow: hidden; position: relative;
  background: #12102a;
}
#waveCanvas { display: block; width: 100%; height: 120px; }
.viz-lbl {
  position: absolute; top: 8px; left: 12px;
  font-size: 10px; font-weight: 600; letter-spacing: .14em;
  text-transform: uppercase; color: rgba(180,170,240,.5);
}

/* ── TRANSPORT ─────────────────────────────────────────── */
.transport {
  display: flex; align-items: center; gap: 1.2rem; flex-wrap: wrap;
  background: var(--surf); border: 1px solid var(--border); border-radius: 12px;
  padding: 1rem 1.3rem; 
}
#playBtn {
  background: var(--accent); color: #fff; border: none;
  padding: .65rem 1.8rem; font-family: inherit; font-size: .88rem;
  font-weight: 700; letter-spacing: .04em; cursor: pointer;
  border-radius: 8px; transition: all .18s;
  flex-shrink: 0; white-space: nowrap;
}
#playBtn:hover { 
  background: #4a39d8; 
  transform: translateY(-1px); }
#playBtn.playing { background: var(--red);  }
#playBtn.playing:hover { background: #c52828; }

.divider { width: 1px; height: 36px; background: var(--border); flex-shrink: 0; }

.status-row { display: flex; gap: 1.6rem; flex-wrap: wrap; flex: 1; }
.stat { display: flex; flex-direction: column; gap: .1rem; }
.stat-lbl { font-size: 10px; font-weight: 600; color: var(--muted); letter-spacing: .14em; text-transform: uppercase; }
.stat-val { font-size: 1.1rem; font-weight: 700; color: var(--accent); }

.beat-dots { display: flex; gap: 6px; align-items: center; padding-top: 4px; }
.beat-dot {
  width: 10px; height: 10px; border-radius: 50%;
  background: var(--surf2); border: 1px solid var(--border);
  transition: all .06s;
}
.beat-dot.on {
  background: var(--violet); border-color: var(--violet);
}

/* ── STEP GRID ─────────────────────────────────────────── */
.grid-wrap {
  background: var(--surf); border: 1px solid var(--border); border-radius: 12px;
  padding: 1rem 1.2rem;
}
.grid-hd {
  font-size: 11px; font-weight: 600; color: var(--muted);
  letter-spacing: .1em; text-transform: uppercase; margin-bottom: .7rem;
}
.grid { display: grid; grid-template-columns: 70px repeat(16, 1fr); gap: 3px; }
.row-lbl { font-size: 12px; font-weight: 600; color: var(--muted); display: flex; align-items: center; }
.cell {
  height: 20px; border-radius: 4px;
  background: var(--surf2); border: 1px solid var(--border);
  transition: background .07s, border-color .07s;
}
.cell.beat-start { border-left: 2px solid var(--muted); }
.cell.euclid-on  { background: var(--muted); border-color: var(--accent); }
.cell.head       { border-color: #9990d8 !important; background: #ebe8f8; }
.cell.lit-mel    { background: var(--violet); border-color: var(--violet) !important;  }
.cell.lit-bas    { background: var(--teal);   border-color: var(--teal)   !important;  }
.cell.lit-seq    { background: var(--red);    border-color: var(--red)    !important; }

/* ── SECTION LABELS ────────────────────────────────────── */
.section-label {
  display: flex; align-items: center; gap: .7rem;
  font-size: 11px; font-weight: 700; color: var(--muted);
  letter-spacing: .14em; text-transform: uppercase;
}
.section-label::after { content: ''; flex: 1; height: 1px; background: var(--border); }

/* ── CONTROLS GRID ─────────────────────────────────────── */
.controls { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: .9rem; }

.ctrl {
  background: var(--surf); border: 1px solid var(--border); border-radius: 10px;
  padding: .9rem 1.05rem; display: flex; flex-direction: column; gap: .6rem;
}
.ctrl-label {
  font-size: 11px; font-weight: 600; color: var(--muted);
  letter-spacing: .1em; text-transform: uppercase;
  display: flex; justify-content: space-between; align-items: baseline;
}
.ctrl-label .val { font-size: 14px; font-weight: 700; color: var(--accent); letter-spacing: 0; }
.ctrl-label .val.danger { color: var(--red); }

input[type=range] {
  -webkit-appearance: none; width: 100%; height: 4px;
  background: var(--surf2); border-radius: 2px; outline: none;
  /*border: 1px solid var(--muted);*/
}

input[type=range]::-webkit-slider-thumb {
  -webkit-appearance: none; width: 16px; height: 16px; border-radius: 50%;
  background: var(--accent); cursor: pointer; border: 2px solid #fff;
  transition: transform .15s;
}
input[type=range]::-webkit-slider-thumb:hover { transform: scale(1.15); }
input[type=range].danger::-webkit-slider-thumb { background: var(--red);  }

select {
  background: var(--surf); border: 1px solid var(--border);
  color: var(--txt); font-family: inherit; font-size: 13px; font-weight: 500;
  padding: .38rem .55rem; border-radius: 7px; cursor: pointer; outline: none; width: 100%;
  transition: border-color .15s;
}
select:focus { border-color: var(--accent); }

/* ── EUCLIDEAN PANEL ───────────────────────────────────── */
.euclid-panel {
  background: var(--surf); border: 1px solid var(--border); border-radius: 12px;
  padding: 1rem 1.2rem; 
  display: flex; flex-direction: column; gap: 1rem;
}
.erow { display: flex; flex-direction: column; gap: .6rem; }
.erow + .erow { border-top: 1px solid var(--border); padding-top: 1rem; }

.erow-top { display: flex; align-items: center; gap: .8rem; flex-wrap: wrap; }
.erow-voice {
  font-size: 12px; font-weight: 700; width: 64px; flex-shrink: 0;
  letter-spacing: .04em;
}
.erow-voice.mel { color: var(--violet); }
.erow-voice.bas { color: var(--teal); }
.erow-voice.seq { color: var(--red); }

.edots { display: flex; gap: 3px; align-items: center; flex: 1; flex-wrap: nowrap; }
.ed { width: 9px; height: 9px; border-radius: 50%; background: var(--surf2); border: 1px solid var(--border); flex-shrink: 0; transition: all .1s; }
.ed.on-mel { background: var(--violet); border-color: var(--violet);}
.ed.on-bas { background: var(--teal);   border-color: var(--teal);   }
.ed.on-seq { background: var(--red);    border-color: var(--red);}
.ed-gap { width: 6px; flex-shrink: 0; }

.erow-sliders { display: flex; gap: .8rem; }
.eslider { display: flex; flex-direction: column; gap: .3rem; flex: 1; }
.eslider-label {
  font-size: 11px; font-weight: 600; color: var(--muted);
  letter-spacing: .08em; text-transform: uppercase;
  display: flex; justify-content: space-between; align-items: baseline;
}
.eslider-label span { font-size: 13px; font-weight: 700; color: var(--txt2); letter-spacing: 0; }

.erow-presets { display: flex; gap: .35rem; flex-wrap: wrap; }
.pbtn {
  background: var(--surf2); border: 1.5px solid var(--border); color: var(--muted);
  font-size: 11px; font-weight: 600; font-family: inherit;
  padding: .25rem .55rem; border-radius: 6px; cursor: pointer;
  letter-spacing: .03em; transition: all .14s;
}
.pbtn:hover { background: var(--surf); border-color: var(--muted); color: var(--txt2); }
.pbtn.sel-mel { background: rgba(91,74,232,.1);  border-color: var(--violet); color: var(--violet); }
.pbtn.sel-bas { background: rgba(11,144,128,.1); border-color: var(--teal);   color: var(--teal); }
.pbtn.sel-seq { background: rgba(222,58,58,.1);  border-color: var(--red);    color: var(--red); }

/* ── RECETTES ──────────────────────────────────────────────── */
.preset-bar {
  display: flex; gap: .45rem; flex-wrap: wrap;
  background: var(--surf); border: 1px solid var(--border); border-radius: 12px;
  padding: .75rem 1.2rem;
}
.preset-lbl {
  font-size: 11px; font-weight: 700; color: var(--muted);
  letter-spacing: .12em; text-transform: uppercase;
  display: flex; align-items: center; margin-right: .3rem;
}
.preset-btn {
  background: var(--surf); border: 1px solid var(--border); color: var(--muted);
  font-size: 11px; font-weight: 700; font-family: inherit;
  padding: .4rem .9rem .3rem; border-radius: 7px; cursor: pointer;
  letter-spacing: .04em; transition: all .14s;
}
.preset-btn:hover { background: var(--surf2); border-color: var(--muted); color: var(--accent); }
.preset-btn.active { background: var(--surf2); border-color: var(--accent); color: var(--accent); }

/* ── ADSR GRID ────────────────────────────────────────── */
.adsr-panel {
  background: var(--surf); border: 1px solid var(--border); border-radius: 12px;
  padding: 1rem 1.2rem; 
}
.adsr-table { width: 100%; border-collapse: separate; border-spacing: 6px; }
.adsr-table th {
  font-size: 11px; font-weight: 700; color: var(--muted);
  letter-spacing: .12em; text-transform: uppercase; padding: 0 4px 6px; text-align: center;
}
.adsr-table th.voice-th { text-align: left; width: 68px; }
.adsr-table td { vertical-align: middle; }
.adsr-table td.voice-td {
  font-size: 12px; font-weight: 700; padding-right: 4px;
}
.adsr-cell { display: flex; flex-direction: column; gap: 3px; align-items: center; }
.adsr-val { font-size: 12px; font-weight: 700; color: var(--accent); min-width: 36px; text-align: center; }

/* ── DRONE + DELAY ─────────────────────────────────────── */
.toggle-btn {
  background: var(--surf2); border: 1.5px solid var(--border); color: var(--muted);
  font-size: 12px; font-weight: 700; font-family: inherit;
  padding: .4rem .9rem; border-radius: 8px; cursor: pointer;
  letter-spacing: .04em; transition: all .16s;
}
.toggle-btn.active {
  background: rgba(11,144,128,.12); border-color: var(--teal); color: var(--teal);
}

/* ── INFO ──────────────────────────────────────────────── */
.info {
  background: var(--surf); border: 1px solid var(--border); border-radius: 12px;
  padding: 1rem 1.2rem;
}
.info-hd { font-size: 11px; font-weight: 700; color: var(--muted); letter-spacing: .1em; text-transform: uppercase; margin-bottom: .4rem; }
.info-body { font-size: 13px; color: var(--txt2); line-height: 1.65; }
.info-body strong { color: var(--txt); font-weight: 600; }
.tags { display: flex; flex-wrap: wrap; gap: .35rem; margin-top: .65rem; }
.tag {
  background: rgba(91,74,232,.08); border: 1px solid rgba(91,74,232,.2);
  color: var(--violet); border-radius: 20px; padding: .2rem .65rem;
  font-size: 11px; font-weight: 600;
}
.tag.exp { background: rgba(222,58,58,.08); border-color: rgba(222,58,58,.2); color: var(--red); }
.tag.euc { background: rgba(192,125,8,.08); border-color: rgba(192,125,8,.2); color: var(--gold); }
.tag.teal { background: rgba(11,144,128,.08); border-color: rgba(11,144,128,.2); color: var(--teal); }