/* Melody Maker: a single-screen workstation. Top bar, one-row arranger, then
 * [ section inspector | note view + piano roll + drawer | producer / sound / mixer ]. */

:root {
  color-scheme: dark;
  --bg: #0e1116;
  --panel: #161b22;
  --panel-2: #1d242e;
  --line: #2a323d;
  --text: #e6edf3;
  --muted: #8b96a5;
  --accent: #8b9cff;
  --accent-ink: #0d1020;
  --chord: #3fd9a0;
  --scale: #6ea8ff;
  --out: #ffb35c;
  --bass: #c084fc;
  --harm: #d6b8ff;
  --playhead: #ff6b8a;
  /* piano roll / keys canvases */
  --row-out: #141920;
  --row-black: #10141a;
  --row-scale: #1c2433;
  --row-root: #26304a;
  --chord-tint: rgba(63, 217, 160, 0.13);
  --key-white: #222a35;
  --key-black: #12161c;
  --radius: 10px;
  --lane-h: 46px;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

/* ---------- EDM club theme ---------- */
:root.edm {
  --bg: #06080f; --panel: #0d121c; --panel-2: #141b29; --line: #22304a; --text: #e9f5ff; --muted: #8ba3c2;
  --accent: #00e5ff; --accent-ink: #001217; --chord: #b6ff3b; --scale: #8a6bff; --out: #ffb020; --bass: #ff2d95; --harm: #9fefff; --playhead: #ff2d95;
  --row-out: #0a0e17; --row-black: #070a12; --row-scale: #101a2d; --row-root: #17294a; --chord-tint: rgba(182, 255, 59, 0.10);
  --key-white: #1a2436; --key-black: #090d16;
}
:root.edm body { background: radial-gradient(1100px 500px at 50% -12%, #0c2a44 0%, transparent 60%), var(--bg); }
:root.edm .logo { background: linear-gradient(135deg, #00e5ff, #8a6bff); box-shadow: 0 0 14px rgba(0, 229, 255, .55); }
:root.edm .topbar { border-bottom-color: #0c6a80; box-shadow: 0 2px 22px rgba(0, 229, 255, .14); }
:root.edm .btn.primary { box-shadow: 0 0 12px rgba(0, 229, 255, .35); }

/* ---------- Melodic techno theme: teal and amber, like a film-score night drive ---------- */
:root.melodic {
  --bg: #070b10; --panel: #0e151d; --panel-2: #152029; --line: #24343f; --text: #e8eef0; --muted: #8aa0a8;
  --accent: #e9a15b; --accent-ink: #1d1003; --chord: #7fd6c2; --scale: #6f8fbf; --out: #e07a5f; --bass: #c78bd6; --harm: #f0c98a; --playhead: #f2b877;
  --row-out: #0a1016; --row-black: #070c11; --row-scale: #101c26; --row-root: #1c2f3d; --chord-tint: rgba(127, 214, 194, 0.11);
  --key-white: #1b2a35; --key-black: #0a1219;
}
:root.melodic body { background: radial-gradient(1100px 520px at 50% -14%, #133444 0%, transparent 62%), var(--bg); }
:root.melodic .logo { background: linear-gradient(135deg, #e9a15b, #7fd6c2); box-shadow: 0 0 12px rgba(233, 161, 91, .5); }
:root.melodic .topbar { border-bottom-color: #4a3a26; box-shadow: 0 2px 20px rgba(233, 161, 91, .10); }
:root.melodic .btn.primary { box-shadow: 0 0 10px rgba(233, 161, 91, .30); }

/* ---------- 8-bit: NES-style pixel UI (hard edges, chunky borders, monospace) ---------- */
:root.nes {
  --bg: #0a0a12; --panel: #15151f; --panel-2: #20202f; --line: #6a6a90; --text: #fcfcfc; --muted: #a4a4c4;
  --accent: #d82800; --accent-ink: #ffffff; --chord: #58d854; --scale: #3cbcfc; --out: #fcb800; --bass: #b8b8f8; --harm: #f8b8f8; --playhead: #fc7460;
  --row-out: #0c0c16; --row-black: #08080f; --row-scale: #17172a; --row-root: #262650; --chord-tint: rgba(88, 216, 84, 0.13);
  --key-white: #2c2c44; --key-black: #0b0b14; --radius: 0px;
}
:root.nes body { font-family: ui-monospace, "Courier New", monospace; letter-spacing: .02em; background: #0a0a12; }
:root.nes h1, :root.nes summary, :root.nes .arr-title, :root.nes .strip-title, :root.nes .row-title { text-transform: uppercase; }
:root.nes .btn, :root.nes .seg, :root.nes select, :root.nes input[type=text], :root.nes input[type=number], :root.nes .block, :root.nes .sec,
:root.nes .idea, :root.nes .chip, :root.nes .menu-panel, :root.nes details.acc, :root.nes .lib-item, :root.nes .logo, :root.nes #mood { border-radius: 0; }
:root.nes .btn { border-width: 2px; box-shadow: 2px 2px 0 #000; font-weight: 700; }
:root.nes .btn:active { transform: translate(2px, 2px); box-shadow: none; }
:root.nes .btn.primary { border-color: #fff; }
:root.nes select, :root.nes input[type=text], :root.nes input[type=number] { border-width: 2px; }
:root.nes details.acc, :root.nes .topbar, :root.nes .arranger, :root.nes .side.left, :root.nes .side.right { border-width: 2px; }
:root.nes .topbar, :root.nes .arranger { border-color: var(--line); box-shadow: none; }
:root.nes .logo { background: #d82800; box-shadow: 2px 2px 0 #000; }
:root.nes .block { border-top-width: 4px; }
:root.nes .menu-panel { border-width: 2px; box-shadow: 4px 4px 0 #000; }

/* ---------- 16-bit: SNES-style blue windows (think Final Fantasy menus) ---------- */
:root.snes {
  --bg: #05061a; --panel: #10187f; --panel-2: #1c2ba8; --line: #c6ccff; --text: #ffffff; --muted: #a8b4ff;
  --accent: #ffd83a; --accent-ink: #1a1400; --chord: #5df58a; --scale: #8ab4ff; --out: #ff9a4a; --bass: #ff8ad8; --harm: #d6b8ff; --playhead: #ffd83a;
  --row-out: #0a1058; --row-black: #070c40; --row-scale: #12208a; --row-root: #1f34b8; --chord-tint: rgba(93, 245, 138, 0.13);
  --key-white: #2c3cc0; --key-black: #0a1058; --radius: 8px;
}
:root.snes body { background: radial-gradient(1000px 500px at 50% -10%, #1f2590 0%, transparent 65%), #05061a; }
:root.snes .topbar, :root.snes .arranger, :root.snes .stage, :root.snes .roll, :root.snes .drawer { background: linear-gradient(180deg, #1b2aa8 0%, #0a1266 100%); }
:root.snes details.acc { background: linear-gradient(180deg, #1b2aa8 0%, #0a1266 100%); border: 2px solid #dfe3ff; box-shadow: inset 0 0 0 2px #0a1160, 0 0 0 1px #000; }
:root.snes .topbar, :root.snes .arranger { border-bottom: 2px solid #dfe3ff; box-shadow: none; }
:root.snes .side.left, :root.snes .side.right { border-color: #dfe3ff; }
:root.snes .btn { border: 2px solid #dfe3ff; background: linear-gradient(180deg, #2b3bd0, #14208f); text-shadow: 1px 1px 0 #000; }
:root.snes .btn.primary { background: linear-gradient(180deg, #ffe66b, #e0a800); color: #1a1400; text-shadow: none; border-color: #fff8c0; }
:root.snes .btn.ghost { background: transparent; }
:root.snes .logo { background: linear-gradient(135deg, #ffd83a, #ff6b3a); box-shadow: 0 0 10px rgba(255, 216, 58, .5); }
:root.snes select, :root.snes input[type=text], :root.snes input[type=number] { border: 2px solid #c6ccff; background: #0a1266; }
:root.snes .menu-panel { border: 2px solid #dfe3ff; background: linear-gradient(180deg, #1b2aa8, #0a1266); }
:root.snes .block, :root.snes .sec, :root.snes .idea, :root.snes .chip, :root.snes .lib-item { border-color: #9aa4f0; }

/* ---------- PS1: grey console bevels on a black boot screen, the four symbol colours ---------- */
:root.ps1 {
  --bg: #0b0c10; --panel: #1a1c24; --panel-2: #262a36; --line: #5a6072; --text: #eceef4; --muted: #9aa1b5;
  --accent: #d5d9e6; --accent-ink: #0b0c10; --chord: #3fd06a; --scale: #4a86ff; --out: #ff5a5a; --bass: #ff8fd0; --harm: #ffe66b; --playhead: #ffe66b;
  --row-out: #10121a; --row-black: #0b0d13; --row-scale: #1a2030; --row-root: #283350; --chord-tint: rgba(63, 208, 106, 0.12);
  --key-white: #2a2f3e; --key-black: #0c0e14; --radius: 3px;
}
:root.ps1 body { background: radial-gradient(900px 420px at 50% -14%, #23283c 0%, transparent 65%), var(--bg); }
:root.ps1 body::after { /* the 2x2 ordered dither the console used to hide colour banding */
  content: ''; position: fixed; inset: 0; pointer-events: none; z-index: 90; opacity: .5;
  background: repeating-conic-gradient(rgba(255, 255, 255, 0.035) 0% 25%, transparent 0% 50%) 0 0 / 4px 4px;
}
:root.ps1 h1, :root.ps1 summary, :root.ps1 .arr-title, :root.ps1 .strip-title, :root.ps1 .row-title { text-transform: uppercase; letter-spacing: .06em; }
:root.ps1 .btn, :root.ps1 .seg, :root.ps1 select, :root.ps1 input[type=text], :root.ps1 input[type=number], :root.ps1 .block, :root.ps1 .sec,
:root.ps1 .idea, :root.ps1 .chip, :root.ps1 .menu-panel, :root.ps1 details.acc, :root.ps1 .lib-item, :root.ps1 #mood { border-radius: 2px; }
:root.ps1 .btn { border: 2px solid; border-color: #8a91a8 #2b2f3e #2b2f3e #8a91a8; background: linear-gradient(180deg, #343a4d, #232735); font-weight: 600; }
:root.ps1 .btn:active { border-color: #2b2f3e #8a91a8 #8a91a8 #2b2f3e; }
:root.ps1 .btn.primary { background: linear-gradient(180deg, #e6e9f2, #a4a9bb); color: #0b0c10; border-color: #ffffff #5a6072 #5a6072 #ffffff; }
:root.ps1 .btn.ghost { background: transparent; }
:root.ps1 .surprise-btn { background: linear-gradient(180deg, #ffd06b, #ff7a5a); color: #2a0a12; border-color: #fff3c4 #7a3a1a #7a3a1a #fff3c4; }
:root.ps1 details.acc { background: linear-gradient(180deg, #232735, #171a24); border: 2px solid; border-color: #7b8199 #2b2f3e #2b2f3e #7b8199; }
:root.ps1 .topbar, :root.ps1 .arranger { border-bottom: 2px solid #5a6072; box-shadow: none; }
:root.ps1 .side.left, :root.ps1 .side.right { border-color: #5a6072; }
:root.ps1 .logo { background: linear-gradient(135deg, #e6e9f2, #8a91a8); color: #0b0c10; box-shadow: 0 0 0 2px #2b2f3e; }
:root.ps1 select, :root.ps1 input[type=text], :root.ps1 input[type=number] { border: 2px solid; border-color: #2b2f3e #8a91a8 #8a91a8 #2b2f3e; background: #10121a; }
:root.ps1 .menu-panel { border: 2px solid; border-color: #8a91a8 #2b2f3e #2b2f3e #8a91a8; background: linear-gradient(180deg, #262a36, #171a24); box-shadow: 4px 4px 0 #000; }

/* ---------- GameCube: deep indigo, glossy and rounded, with a purple glow ---------- */
:root.gc {
  --bg: #0d0a20; --panel: #191340; --panel-2: #251b58; --line: #4f41a8; --text: #f3f0ff; --muted: #a9a0e6;
  --accent: #a798ff; --accent-ink: #0d0824; --chord: #7ff0d8; --scale: #79a6ff; --out: #ffb066; --bass: #e58cff; --harm: #d9ccff; --playhead: #ffffff;
  --row-out: #120e2c; --row-black: #0c0922; --row-scale: #1c1648; --row-root: #2d2266; --chord-tint: rgba(127, 240, 216, 0.12);
  --key-white: #2b2163; --key-black: #100b2c; --radius: 14px;
}
:root.gc body { background: radial-gradient(1100px 520px at 50% -12%, #3a2a8c 0%, transparent 62%), var(--bg); }
:root.gc .logo { background: linear-gradient(135deg, #c3b6ff, #6b55d8); box-shadow: 0 0 14px rgba(150, 130, 255, .6); }
:root.gc .topbar { border-bottom-color: #5b4bc4; box-shadow: 0 2px 22px rgba(140, 120, 255, .2); }
:root.gc .btn { border-radius: 12px; box-shadow: inset 0 1px 0 rgba(255, 255, 255, .18); background-image: linear-gradient(180deg, rgba(255, 255, 255, .1), rgba(255, 255, 255, 0) 55%); }
:root.gc .surprise-btn { background-image: linear-gradient(180deg, rgba(255, 255, 255, .3), rgba(255, 255, 255, 0) 55%), linear-gradient(90deg, #ffb24d, #ff6b8a); color: #2a0a12; }
:root.gc .btn.primary { box-shadow: inset 0 1px 0 rgba(255, 255, 255, .35), 0 0 14px rgba(150, 130, 255, .5); }
:root.gc details.acc { background: linear-gradient(180deg, rgba(255, 255, 255, .04), rgba(255, 255, 255, 0)), var(--panel); border-color: #4f41a8; box-shadow: 0 0 18px rgba(120, 100, 230, .12); }
:root.gc .menu-panel { border-color: #6a5adf; box-shadow: 0 8px 30px rgba(20, 10, 80, .6), 0 0 18px rgba(140, 120, 255, .2); }

/* ---------- 80s time capsule theme ---------- */
:root.era80 {
  --bg: #0b0616; --panel: #150b26; --panel-2: #20123b; --line: #3d2470; --text: #f6ecff; --muted: #b39ad9;
  --accent: #ff3ea5; --accent-ink: #22052f; --chord: #22f5e1; --scale: #4dabff; --out: #ffd84d; --bass: #ff7a3d; --harm: #ff9bd5; --playhead: #ffd84d;
  --row-out: #140a26; --row-black: #0e0620; --row-scale: #1f1240; --row-root: #35195e; --chord-tint: rgba(34, 245, 225, 0.14);
  --key-white: #2b1655; --key-black: #150a2e;
}
:root.era80 body { background: radial-gradient(1100px 480px at 50% -8%, #2c0f52 0%, transparent 62%), var(--bg); }
:root.era80 body::after { /* CRT scanlines */
  content: ''; position: fixed; inset: 0; pointer-events: none; z-index: 90;
  background: repeating-linear-gradient(to bottom, rgba(0, 0, 0, 0) 0, rgba(0, 0, 0, 0) 2px, rgba(0, 0, 0, 0.10) 3px);
}
:root.era80 .logo { background: linear-gradient(135deg, #ff3ea5, #ffd84d); box-shadow: 0 0 14px rgba(255, 62, 165, .7); }
:root.era80 .topbar { border-bottom-color: var(--accent); box-shadow: 0 2px 22px rgba(255, 62, 165, .25); }
:root.era80 .btn.primary { box-shadow: 0 0 12px rgba(255, 62, 165, .45); }

/* ---------- base ---------- */
* { box-sizing: border-box; }
[hidden] { display: none !important; }
html, body { height: 100%; }
body { margin: 0; background: var(--bg); color: var(--text); font-size: 13px; line-height: 1.35; overflow: hidden; }
.muted { color: var(--muted); font-size: 12px; }
.hint { margin: 0; color: var(--muted); font-size: 12px; }
.spacer { flex: 1; }
.grow { flex: 1; }

label { display: grid; gap: 2px; color: var(--muted); font-size: 11.5px; position: relative; }
label output { position: absolute; right: 0; top: 0; color: var(--text); font-variant-numeric: tabular-nums; }
label.check, label.inline { display: flex; align-items: center; gap: 6px; font-size: 12.5px; }
label.check { color: var(--text); }
label.inline { color: var(--muted); }
.inline output { position: static; color: var(--text); min-width: 3ch; font-variant-numeric: tabular-nums; }
.inline input[type=range] { width: 110px; }

select, input[type=number], input[type=text] {
  width: 100%; background: var(--panel-2); color: var(--text); border: 1px solid var(--line);
  border-radius: 7px; padding: 4px 7px; font: inherit;
}
select:focus-visible, input:focus-visible, button:focus-visible, summary:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; }
input[type=range] { width: 100%; accent-color: var(--accent); margin: 0; height: 16px; }
input[type=checkbox] { accent-color: var(--accent); width: 15px; height: 15px; margin: 0; }
canvas { display: block; }

.btn {
  background: var(--panel-2); color: var(--text); border: 1px solid var(--line); border-radius: 7px;
  padding: 6px 12px; font: inherit; cursor: pointer; white-space: nowrap; list-style: none;
}
.btn:hover { border-color: var(--accent); }
.btn:disabled { opacity: .4; cursor: default; }
.btn.small { padding: 3px 9px; font-size: 12px; }
.btn.icon { padding: 5px 9px; font-size: 15px; line-height: 1; }
.btn.primary { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); font-weight: 600; }
.btn.primary:hover { filter: brightness(1.08); }
.btn.ghost { background: transparent; }
.btnrow { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; }
.btnrow.tight { gap: 3px; flex-wrap: nowrap; }
.btnrow.tight .btn { padding: 3px 7px; }
.surprise-btn { background: linear-gradient(90deg, #ffb24d, #ff6b8a); color: #2a0a12; font-weight: 700; border: 0; }
.surprise-btn:hover { filter: brightness(1.1); }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.grid2 > * { min-width: 0; }
.checks { display: flex; flex-wrap: wrap; gap: 6px 14px; }

/* ---------- app shell ---------- */
.app { height: 100vh; display: grid; grid-template-rows: auto auto minmax(0, 1fr); }

/* ---------- top bar ---------- */
.topbar {
  display: flex; flex-wrap: wrap; align-items: center; gap: 6px 14px; padding: 6px 12px;
  border-bottom: 1px solid var(--line); background: var(--panel); position: relative; z-index: 20;
}
.brand { display: flex; align-items: center; gap: 8px; min-width: 0; }
.logo { display: grid; place-items: center; width: 26px; height: 26px; border-radius: 7px; flex: none; background: var(--accent); color: var(--accent-ink); font-size: 16px; }
.title-input { background: transparent; color: var(--text); border: 1px solid transparent; padding: 3px 7px; width: 210px; font-weight: 600; }
.title-input:hover, .title-input:focus { border-color: var(--line); background: var(--panel-2); }
.group { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.group.right { margin-left: auto; }
.tempo input[type=range] { width: 100px; }

.seg { display: inline-flex; border: 1px solid var(--line); border-radius: 7px; overflow: hidden; }
.seg button { background: var(--panel-2); color: var(--muted); border: 0; padding: 5px 11px; font: inherit; cursor: pointer; }
.seg button + button { border-left: 1px solid var(--line); }
.seg button.on { background: var(--accent); color: var(--accent-ink); font-weight: 600; }
/* the sound-world menu */
.world-btn { font-weight: 600; }
.world-btn[data-world="80s"] { background: linear-gradient(90deg, #ff3ea5, #ffb24d); color: #1a0630; border-color: transparent; }
.world-btn[data-world="edm"] { background: linear-gradient(90deg, #00e5ff, #8a6bff); color: #04101a; border-color: transparent; }
.world-btn[data-world="melodic"] { background: linear-gradient(90deg, #e9a15b, #7fd6c2); color: #1d1003; border-color: transparent; }
.world-btn[data-world="8bit"] { background: #d82800; color: #fff; border-color: #fff; }
.world-btn[data-world="16bit"] { background: linear-gradient(180deg, #2b3bd0, #10187f); color: #fff; border-color: #dfe3ff; }
.world-btn[data-world="ps1"] { background: linear-gradient(180deg, #e6e9f2, #8a91a8); color: #0b0c10; border-color: #fff #5a6072 #5a6072 #fff; }
.world-btn[data-world="gc"] { background: linear-gradient(135deg, #8b7bff, #4c3aa8); color: #fff; border-color: transparent; }
.world-panel { min-width: 300px; }
.world-panel .menu-item { display: grid; gap: 1px; }
.world-panel .menu-item small { color: var(--muted); font-size: 11px; }
.world-panel .menu-item.on { background: color-mix(in srgb, var(--accent) 24%, transparent); }

/* ---------- popover menus (<details class="menu">) ---------- */
.menu { position: relative; }
.menu > summary { list-style: none; cursor: pointer; }
.menu > summary::-webkit-details-marker { display: none; }
.menu[open] > summary { border-color: var(--accent); }
.menu-panel {
  position: absolute; z-index: 80; top: calc(100% + 4px); left: 0; min-width: 190px; padding: 6px;
  background: var(--panel-2); border: 1px solid var(--line); border-radius: 10px; box-shadow: 0 10px 30px rgba(0, 0, 0, .5);
  display: grid; gap: 2px;
}
.menu.align-right .menu-panel { left: auto; right: 0; }
.menu-panel.wide { min-width: 360px; gap: 8px; }
.menu-panel hr { border: 0; border-top: 1px solid var(--line); margin: 3px 0; width: 100%; }
.menu-item {
  display: block; width: 100%; text-align: left; background: transparent; color: var(--text); border: 0;
  border-radius: 6px; padding: 6px 9px; font: inherit; cursor: pointer;
}
.menu-item:hover { background: color-mix(in srgb, var(--accent) 22%, transparent); }

/* ---------- arranger (one row) ---------- */
.arranger { display: flex; align-items: center; gap: 10px; padding: 5px 12px; border-bottom: 1px solid var(--line); background: var(--panel); position: relative; z-index: 15; }
.arr-left, .arr-right { display: flex; align-items: center; gap: 6px; flex: none; }
.arr-title { font-size: 11px; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
.timeline { display: flex; flex: 1; min-width: 0; gap: 3px; overflow-x: auto; padding: 1px 0; }
.block {
  flex: var(--bars, 4) 1 0; min-width: 62px; height: 40px; cursor: pointer; overflow: hidden; text-align: left;
  display: grid; align-content: center; padding: 2px 8px; font: inherit; color: var(--text);
  background: color-mix(in srgb, var(--sc, var(--accent)) 26%, var(--panel-2));
  border: 1px solid transparent; border-top: 3px solid var(--sc, var(--accent)); border-radius: 6px;
}
.block b { font-size: 12px; font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.block small { color: var(--muted); font-size: 10.5px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.block.sel { border-color: var(--text); }
.block.playing { background: color-mix(in srgb, var(--sc, var(--accent)) 60%, var(--panel-2)); box-shadow: 0 0 10px color-mix(in srgb, var(--sc, var(--accent)) 60%, transparent); }
.empty { color: var(--muted); padding: 6px 0; }
.sections { display: flex; flex-wrap: wrap; gap: 6px; }
.sec {
  display: grid; gap: 1px; text-align: left; cursor: pointer; background: var(--panel); color: var(--text); font: inherit;
  border: 1px solid var(--line); border-left: 4px solid var(--sc, var(--accent)); border-radius: 7px; padding: 4px 10px 4px 8px;
}
.sec small { color: var(--muted); font-size: 10.5px; }
.sec:hover { border-color: var(--sc, var(--accent)); }
.sec.on { background: color-mix(in srgb, var(--sc, var(--accent)) 22%, var(--panel)); border-color: var(--sc, var(--accent)); }
.row-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; }
.name-input { width: 130px; padding: 3px 7px; }

/* ---------- workspace ---------- */
.workspace { display: grid; grid-template-columns: 268px minmax(0, 1fr) 304px; min-height: 0; }
.side { min-height: 0; overflow-y: auto; padding: 6px; background: var(--bg); }
.side.left { border-right: 1px solid var(--line); }
.side.right { border-left: 1px solid var(--line); }
.center { display: flex; flex-direction: column; min-width: 0; min-height: 0; }
:root.era80 .side, :root.edm .side { background: transparent; }

/* accordion */
details.acc { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); margin-bottom: 6px; }
details.acc > summary {
  padding: 6px 10px; cursor: pointer; list-style: none; font-size: 11px; letter-spacing: .08em; text-transform: uppercase; color: var(--muted);
  display: flex; align-items: center; justify-content: space-between;
}
details.acc > summary::-webkit-details-marker { display: none; }
details.acc > summary::after { content: '▾'; font-size: 12px; transition: transform .15s; }
details.acc:not([open]) > summary::after { transform: rotate(-90deg); }
.acc-body { padding: 0 10px 9px; display: grid; gap: 5px; }
.badge { margin-left: 8px; padding: 0 8px; border-radius: 999px; text-transform: none; letter-spacing: 0; background: var(--panel-2); border: 1px solid var(--line); color: var(--text); font-size: 11px; font-weight: 500; }

/* tabs */
.tabs { display: flex; gap: 2px; }
.tabs button { background: transparent; color: var(--muted); border: 0; border-bottom: 2px solid transparent; padding: 6px 12px; font: inherit; cursor: pointer; }
.tabs button:hover { color: var(--text); }
.tabs button.on { color: var(--text); border-bottom-color: var(--accent); font-weight: 600; }
.tabs.full { margin-bottom: 8px; border-bottom: 1px solid var(--line); }
.tabs.full button { flex: 1; text-align: center; }
.stack { display: grid; gap: 9px; }
.prod-line { display: grid; gap: 4px; }
.row-title { font-size: 10.5px; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }

/* producer bits */
.mood-wrap { display: grid; gap: 5px; justify-items: center; }
#mood { width: min(100%, 230px, 30vh); height: auto; aspect-ratio: 1; border-radius: 10px; border: 1px solid var(--line); cursor: crosshair; touch-action: none; }
#moodText { text-align: center; min-height: 2.4em; }
.mixer { display: grid; gap: 8px; }
.mix-row { display: grid; grid-template-columns: 52px 1fr 28px 28px; align-items: center; gap: 6px; }
.mix-row span { font-size: 12px; color: var(--muted); }
.mix-row .btn { padding: 2px 0; font-size: 12px; text-align: center; }
.mix-row .btn[aria-pressed=true].mute { background: #ff6b8a; color: #22050c; border-color: #ff6b8a; }
.mix-row .btn[aria-pressed=true].solo { background: #ffd84d; color: #241a00; border-color: #ffd84d; }

/* ---------- centre: note view ---------- */
.stage { flex: none; border-bottom: 1px solid var(--line); background: var(--panel); }
.viz-wrap { height: clamp(120px, 20vh, 220px); }
#viz { width: 100%; height: 100%; cursor: pointer; }

/* ---------- centre: piano roll ---------- */
.roll { flex: 1; min-height: 0; display: flex; flex-direction: column; background: var(--panel); }
.roll-toolbar { display: flex; flex-wrap: wrap; align-items: center; gap: 6px 8px; padding: 5px 10px; border-bottom: 1px solid var(--line); position: relative; z-index: 12; }
.legend { display: flex; gap: 10px; color: var(--muted); font-size: 11.5px; }
.legend span { display: inline-flex; align-items: center; gap: 5px; }
.dot { width: 9px; height: 9px; border-radius: 3px; display: inline-block; }
.dot.chord { background: var(--chord); }
.dot.scale { background: var(--scale); }
.dot.out { background: var(--out); }
.roll-toolbar select { width: auto; padding: 3px 6px; }

.roll-body { flex: 1; min-height: 0; display: flex; }
.gutter { flex: none; width: 60px; display: flex; flex-direction: column; border-right: 1px solid var(--line); }
.gutter-top { flex: none; height: var(--lane-h); display: grid; place-items: center; font-size: 10.5px; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); border-bottom: 1px solid var(--line); }
.gutter-scroll { flex: 1; min-height: 0; overflow: hidden; }
#keys { cursor: pointer; }
.scroll { flex: 1; min-width: 0; overflow: auto; }
.inner { position: relative; }
#grid { cursor: crosshair; touch-action: pan-y; }
.lane { position: sticky; top: 0; z-index: 4; display: flex; height: var(--lane-h); border-bottom: 1px solid var(--line); background: var(--panel); }
.lane-cell { flex: none; display: grid; grid-template-columns: 1fr 58px; align-content: center; gap: 2px 4px; padding: 0 5px; border-left: 1px solid var(--line); }
.lane-cell:first-child { border-left: 0; }
.lane-cell select { padding: 2px 5px; font-size: 11.5px; min-width: 0; }
.lane-cell select.ext { padding: 2px 2px; }
.lane-cell .tones { grid-column: 1 / -1; font-size: 10.5px; color: var(--muted); text-align: center; white-space: nowrap; overflow: hidden; }
.lane-cell.active { background: color-mix(in srgb, var(--accent) 18%, var(--panel)); }
.status { flex: none; margin: 0; padding: 4px 12px; border-top: 1px solid var(--line); color: var(--muted); font-size: 11.5px; min-height: 26px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

/* ---------- centre: drawer (ideas / theory / library) ---------- */
.drawer { flex: none; border-top: 1px solid var(--line); background: var(--panel); position: relative; z-index: 10; }
.drawer-bar { display: flex; align-items: center; justify-content: space-between; padding: 0 8px 0 4px; }
.drawer-body { display: none; height: 200px; overflow: auto; padding: 8px 12px; border-top: 1px solid var(--line); }
.drawer.open .drawer-body { display: block; }
.drawer.open #drawerToggle { transform: rotate(180deg); }
.pane-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 6px 10px; margin-bottom: 8px; }

.idea-grid { display: flex; gap: 8px; overflow-x: auto; padding-bottom: 4px; }
.idea-grid .empty { padding: 6px 0; }
.idea { flex: 0 0 176px; background: var(--panel-2); border: 1px solid var(--line); border-radius: 9px; padding: 6px; display: grid; gap: 5px; }
.idea.fav { border-color: var(--accent); }
.idea.playing { box-shadow: 0 0 0 2px var(--accent); }
.idea canvas { width: 100%; height: 50px; border-radius: 5px; background: var(--panel); }
.idea .top { display: flex; justify-content: space-between; align-items: center; font-size: 11px; color: var(--muted); }
.idea .acts { display: flex; gap: 5px; }
.idea .acts .btn { flex: 1; padding: 2px 0; font-size: 12px; text-align: center; }
.idea .heart[aria-pressed=true] { background: #ff6b8a; border-color: #ff6b8a; color: #22050c; }

.strip { display: flex; flex-wrap: wrap; align-items: center; gap: 6px 12px; margin-bottom: 6px; }
.strip-title { width: 56px; font-size: 10.5px; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
.chips { display: flex; flex-wrap: wrap; gap: 5px; }
.chip { display: grid; justify-items: center; min-width: 48px; background: var(--panel-2); color: var(--text); border: 1px solid var(--line); border-radius: 7px; padding: 3px 9px; font: inherit; cursor: pointer; line-height: 1.2; }
.chip small { color: var(--muted); font-size: 10.5px; }
.chip:hover { border-color: var(--accent); }
.chip.tonic { border-color: var(--accent); }

.lib-list { display: grid; gap: 6px; }
.lib-item { display: flex; flex-wrap: wrap; align-items: center; gap: 4px 12px; background: var(--panel-2); border: 1px solid var(--line); border-radius: 8px; padding: 6px 10px; }
.lib-item .actions { margin-left: auto; display: flex; gap: 5px; }

/* ---------- small screens: fall back to a normal scrolling page ---------- */
@media (max-width: 1050px) {
  body { overflow: auto; }
  .app { height: auto; display: block; }
  .workspace { display: flex; flex-direction: column; }
  .center { order: -1; }
  .side { overflow: visible; border: 0; }
  .roll { min-height: 520px; }
  .title-input { width: 150px; }
  .group.right { margin-left: 0; }
}
@media (max-height: 760px) and (min-width: 1051px) {
  .viz-wrap { height: clamp(96px, 16vh, 150px); }
  .drawer.open .drawer-body { height: 160px; }
}