/* daW³ — core styles */
:root {
  --bg: #0f1116;
  --bg-2: #151821;
  --bg-3: #1b1f2a;
  --bg-4: #232836;
  --panel: #171a23;
  --line: #2a3040;
  --line-2: #363d50;
  --text: #e6e9f2;
  --text-2: #a7aec2;
  --text-3: #6d7590;
  --accent: #7c5cff;
  --accent-2: #00d4ff;
  --accent-3: #ff4fa3;
  --good: #2fd17a;
  --warn: #ffb547;
  --bad: #ff4d5e;
  --play: #2fd17a;
  --rec: #ff3b4e;
  --white-key: #e9ecf5;
  --black-key: #1b1e27;
  --grid-bar: rgba(255,255,255,0.16);
  --grid-beat: rgba(255,255,255,0.08);
  --grid-step: rgba(255,255,255,0.035);
  --radius: 6px;
  --radius-sm: 4px;
  --font: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  --mono: 'JetBrains Mono', ui-monospace, 'SFMono-Regular', Menlo, Consolas, monospace;
  --shadow: 0 10px 30px rgba(0,0,0,0.45);
  --header-h: 52px;
  --status-h: 24px;
  color-scheme: dark;
}
:root[data-theme="light"] {
  --bg: #eef0f5; --bg-2: #e4e7ef; --bg-3: #d9dde8; --bg-4: #cdd2df; --panel: #f6f7fb;
  --line: #c5cbda; --line-2: #b3bacc; --text: #1a1d26; --text-2: #4a5168; --text-3: #7b8299;
  --grid-bar: rgba(0,0,0,0.22); --grid-beat: rgba(0,0,0,0.1); --grid-step: rgba(0,0,0,0.045);
  --black-key: #3a3f4f; --white-key: #ffffff; --shadow: 0 10px 30px rgba(0,0,0,0.18);
  color-scheme: light;
}

* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; background: var(--bg); color: var(--text); font: 13px/1.35 var(--font); overflow: hidden; }
body { -webkit-font-smoothing: antialiased; user-select: none; }
input, textarea, select, button { font: inherit; color: inherit; }
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-thumb { background: var(--bg-4); border-radius: 6px; border: 2px solid var(--bg-2); }
::-webkit-scrollbar-track { background: transparent; }
.icon { display: inline-flex; align-items: center; justify-content: center; line-height: 0; }
.muted { color: var(--text-3); }
.hidden { display: none !important; }

/* ---------- Buttons & inputs ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 6px; height: 28px; padding: 0 10px;
  background: var(--bg-3); border: 1px solid var(--line); border-radius: var(--radius-sm); color: var(--text);
  cursor: pointer; white-space: nowrap; transition: background .12s, border-color .12s;
}
.btn:hover { background: var(--bg-4); border-color: var(--line-2); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn.primary:hover { filter: brightness(1.1); }
.btn.small { height: 22px; padding: 0 7px; font-size: 12px; }
.btn:disabled, .icon-btn:disabled, .toggle:disabled { opacity: .45; cursor: default; pointer-events: none; }
.btn.danger { color: var(--bad); }
.icon-btn {
  display: inline-flex; align-items: center; justify-content: center; width: 28px; height: 28px;
  background: transparent; border: 1px solid transparent; border-radius: var(--radius-sm); cursor: pointer; color: var(--text-2);
}
.icon-btn:hover { background: var(--bg-4); color: var(--text); }
.icon-btn.on, .icon-btn.active { color: var(--accent-2); background: var(--bg-3); border-color: var(--line); }
.toggle {
  height: 24px; padding: 0 8px; border-radius: var(--radius-sm); border: 1px solid var(--line);
  background: var(--bg-3); cursor: pointer; font-size: 12px; color: var(--text-2);
}
.toggle.on { background: color-mix(in srgb, var(--accent) 30%, var(--bg-3)); color: var(--text); border-color: var(--accent); }
.toggle.mute.on { background: #6b5a1d; border-color: var(--warn); color: #fff; }
.toggle.solo.on { background: #1d5b6b; border-color: var(--accent-2); color: #fff; }
.toggle.arm.on { background: #6b1d26; border-color: var(--rec); color: #fff; }
select, .numfield, .prompt-input, input[type=text], input[type=search], textarea {
  background: var(--bg); border: 1px solid var(--line); border-radius: var(--radius-sm);
  padding: 3px 6px; height: 26px; outline: none;
}
textarea { height: auto; resize: vertical; font-family: var(--mono); }
select:focus, .numfield:focus, input:focus, textarea:focus { border-color: var(--accent); }
.numfield { text-align: center; cursor: ns-resize; font-family: var(--mono); }
.numfield:focus { cursor: text; }
.prompt-input { width: 100%; height: 32px; }
textarea.prompt-input { height: auto; }
label.field { display: flex; flex-direction: column; gap: 4px; font-size: 11px; color: var(--text-2); text-transform: uppercase; letter-spacing: .04em; }
.row { display: flex; align-items: center; gap: 8px; }
.row.wrap { flex-wrap: wrap; }
.col { display: flex; flex-direction: column; gap: 8px; }
.spacer { flex: 1; }
kbd { font-family: var(--mono); font-size: 11px; background: var(--bg-4); border: 1px solid var(--line-2); border-radius: 3px; padding: 0 4px; }

/* ---------- Knobs & faders ---------- */
.knob { display: inline-flex; flex-direction: column; align-items: center; gap: 1px; width: 58px; cursor: ns-resize; }
.knob svg { overflow: visible; }
.knob-track { fill: none; stroke: var(--bg-4); stroke-width: 4; stroke-linecap: round; }
.knob-arc { fill: none; stroke: var(--accent-2); stroke-width: 4; stroke-linecap: round; }
.knob-dot { stroke: var(--text); stroke-width: 2.4; stroke-linecap: round; }
.knob.active .knob-arc { stroke: var(--accent-3); }
.knob-label { font-size: 10px; color: var(--text-2); text-align: center; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; max-width: 58px; }
.knob-value { font-size: 10px; color: var(--text-3); font-family: var(--mono); white-space: nowrap; }
.knob:hover .knob-value { color: var(--text); }
.fader { position: relative; background: var(--bg); border: 1px solid var(--line); border-radius: 3px; cursor: pointer; }
.fader.vertical { width: 10px; }
.fader.horizontal { height: 10px; }
.fader-fill { position: absolute; left: 0; bottom: 0; background: linear-gradient(to top, var(--accent), var(--accent-2)); border-radius: 2px; opacity: .65; }
.fader.vertical .fader-fill { width: 100%; }
.fader.horizontal .fader-fill { height: 100%; top: 0; }
.fader-thumb { position: absolute; background: var(--text); border-radius: 2px; box-shadow: 0 1px 4px rgba(0,0,0,.6); }
.fader.vertical .fader-thumb { left: -5px; right: -5px; height: 10px; }
.fader.horizontal .fader-thumb { top: -5px; bottom: -5px; width: 10px; }
canvas.meter { width: 10px; background: #000; border-radius: 2px; image-rendering: pixelated; }

/* ---------- Param panels (nested features) ---------- */
.param-panel { display: flex; flex-wrap: wrap; gap: 8px; align-items: flex-start; }
.param-section { background: var(--bg-2); border: 1px solid var(--line); border-radius: var(--radius); padding: 0 8px 6px; min-width: 120px; }
.param-section > summary, .param-advanced > summary { cursor: pointer; list-style: none; font-size: 11px; text-transform: uppercase; letter-spacing: .06em; color: var(--text-2); padding: 6px 0 4px; display: flex; align-items: center; gap: 4px; }
.param-section > summary::before, .param-advanced > summary::before { content: '▸'; font-size: 10px; transition: transform .15s; }
.param-section[open] > summary::before, .param-advanced[open] > summary::before { transform: rotate(90deg); }
.param-advanced > summary { color: var(--text-3); font-size: 10px; }
.param-row { display: flex; flex-wrap: wrap; gap: 4px 2px; align-items: flex-start; }
.param-enum { display: flex; flex-direction: column; gap: 2px; font-size: 10px; color: var(--text-2); padding: 2px 4px; }
.param-enum select { height: 22px; font-size: 11px; max-width: 120px; }
.param-bool { padding: 8px 4px; }

/* ---------- Tabs ---------- */
.tabs-wrap { display: flex; flex-direction: column; min-height: 0; height: 100%; }
.tabs { display: flex; gap: 2px; border-bottom: 1px solid var(--line); padding: 0 6px; flex-shrink: 0; overflow-x: auto; }
.tab { display: inline-flex; align-items: center; gap: 5px; background: none; border: 0; border-bottom: 2px solid transparent; padding: 7px 9px; cursor: pointer; color: var(--text-2); white-space: nowrap; }
.tab:hover { color: var(--text); }
.tab.active { color: var(--text); border-bottom-color: var(--accent); }
.tab-body { flex: 1; min-height: 0; overflow: auto; }

/* ---------- Overlays ---------- */
.overlay-root { position: fixed; inset: 0; pointer-events: none; z-index: 1000; }
.overlay-root > * { pointer-events: auto; }
.modal-backdrop { position: fixed; inset: 0; background: rgba(5,6,10,.6); display: flex; align-items: center; justify-content: center; backdrop-filter: blur(2px); animation: fade .15s; }
.modal { background: var(--panel); border: 1px solid var(--line-2); border-radius: 10px; box-shadow: var(--shadow); max-height: calc(100vh - 40px); display: flex; flex-direction: column; animation: pop .15s; }
.modal-header { display: flex; align-items: center; justify-content: space-between; padding: 12px 14px 8px; }
.modal-header h2 { margin: 0; font-size: 16px; font-weight: 600; }
.modal-body { padding: 4px 14px 12px; overflow: auto; user-select: text; }
.modal-footer { display: flex; justify-content: flex-end; gap: 8px; padding: 10px 14px; border-top: 1px solid var(--line); }
@keyframes fade { from { opacity: 0; } }
@keyframes pop { from { transform: scale(.97); opacity: 0; } }
.toast-host { position: fixed; right: 16px; bottom: 36px; display: flex; flex-direction: column; gap: 8px; z-index: 1100; pointer-events: none; }
.toast { background: var(--bg-4); border: 1px solid var(--line-2); border-left: 3px solid var(--accent-2); padding: 9px 14px; border-radius: var(--radius); box-shadow: var(--shadow); transform: translateX(30px); opacity: 0; transition: all .25s; max-width: 380px; }
.toast.show { transform: none; opacity: 1; }
.toast.warn { border-left-color: var(--warn); }
.toast.error { border-left-color: var(--bad); }
.toast.success { border-left-color: var(--good); }
.ctx-menu { position: fixed; min-width: 190px; max-height: calc(100vh - 8px); overflow-y: auto; background: var(--bg-3); color: var(--text); border: 1px solid var(--line-2); border-radius: var(--radius); box-shadow: var(--shadow); padding: 4px; z-index: 1200; }
/* submenus are fixed-positioned by JS (flip at screen edges, scroll when tall) so a scrolling parent can't clip them */
.ctx-menu.submenu { display: none; position: fixed; left: 0; top: 0; max-height: calc(100vh - 8px); }
.ctx-item { position: relative; display: flex; align-items: center; gap: 8px; padding: 5px 8px; border-radius: 4px; cursor: pointer; white-space: nowrap; }
.ctx-item:hover { background: var(--accent); color: #fff; }
.ctx-item:hover > .ctx-menu.submenu { display: block; }
.ctx-item.disabled { opacity: .4; cursor: default; }
.ctx-item.disabled:hover { background: none; color: inherit; }
.ctx-label { flex: 1; }
.ctx-shortcut { color: var(--text-3); font-size: 11px; font-family: var(--mono); }
.ctx-item:hover .ctx-shortcut { color: #eee; }
.ctx-sep { height: 1px; background: var(--line); margin: 4px 2px; }
.ctx-header { font-size: 10px; text-transform: uppercase; letter-spacing: .06em; color: var(--text-3); padding: 6px 8px 2px; }
.icon-spacer { width: 14px; display: inline-block; }

/* ---------- App layout ---------- */
#app { display: grid; height: 100vh; grid-template-rows: var(--header-h) 1fr auto var(--status-h); grid-template-columns: auto 1fr auto; grid-template-areas: "header header header" "browser main assistant" "browser device assistant" "status status status"; }
.app-header { grid-area: header; display: flex; align-items: center; gap: 10px; padding: 0 10px; background: var(--bg-2); border-bottom: 1px solid var(--line); min-width: 0; overflow-x: auto; overflow-y: hidden; }
.app-browser { grid-area: browser; width: 250px; background: var(--panel); border-right: 1px solid var(--line); display: flex; flex-direction: column; min-height: 0; }
.app-main { grid-area: main; display: flex; flex-direction: column; min-width: 0; min-height: 0; }
.app-assistant { grid-area: assistant; width: 300px; background: var(--panel); border-left: 1px solid var(--line); display: flex; flex-direction: column; min-height: 0; }
.app-device { grid-area: device; background: var(--panel); border-top: 1px solid var(--line); position: relative; min-width: 0; display: flex; flex-direction: column; }
.app-status { grid-area: status; display: flex; align-items: center; gap: 14px; padding: 0 10px; background: var(--bg-2); border-top: 1px solid var(--line); font-size: 11px; color: var(--text-3); white-space: nowrap; overflow: hidden; }
#app.browser-closed .app-browser, #app.assistant-closed .app-assistant { display: none; }
#app.device-closed .app-device .device-body { display: none; }
.device-resizer { position: absolute; top: -3px; left: 0; right: 0; height: 6px; cursor: ns-resize; z-index: 5; }
.panel-header { display: flex; align-items: center; gap: 6px; padding: 6px 8px; border-bottom: 1px solid var(--line); font-size: 11px; text-transform: uppercase; letter-spacing: .07em; color: var(--text-2); flex-shrink: 0; min-height: 34px; }
.panel-header .title { font-weight: 600; color: var(--text); }
.panel-body { flex: 1; min-height: 0; overflow: auto; }

/* header pieces */
.logo { display: flex; align-items: center; gap: 8px; font-weight: 800; letter-spacing: .08em; font-size: 14px; white-space: nowrap; cursor: pointer; }
.logo-mark { width: 26px; height: 26px; border-radius: 7px; background: conic-gradient(from 200deg, var(--accent), var(--accent-2), var(--accent-3), var(--accent)); display: grid; place-items: center; color: #fff; font-size: 14px; box-shadow: 0 0 18px rgba(124,92,255,.45); }
.logo small { font-weight: 500; color: var(--text-3); letter-spacing: .04em; font-size: 10px; display: block; }
.hgroup { display: flex; align-items: center; gap: 4px; padding: 0 8px; border-left: 1px solid var(--line); height: 34px; flex-shrink: 0; }
.hgroup:first-of-type { border-left: 0; }
.transport-btn { width: 34px; height: 30px; border-radius: 6px; border: 1px solid var(--line); background: var(--bg-3); color: var(--text-2); display: inline-flex; align-items: center; justify-content: center; cursor: pointer; }
.transport-btn:hover { color: var(--text); background: var(--bg-4); }
.transport-btn.play.on { color: #fff; background: var(--play); border-color: var(--play); }
.transport-btn.rec.on { color: #fff; background: var(--rec); border-color: var(--rec); animation: pulse 1s infinite; }
.transport-btn.on { color: var(--accent-2); border-color: var(--accent-2); }
@keyframes pulse { 50% { opacity: .7; } }
.lcd { font-family: var(--mono); background: #07080c; border: 1px solid var(--line); border-radius: 6px; padding: 2px 10px; color: #8ff0ff; min-width: 108px; text-align: center; font-size: 15px; line-height: 26px; letter-spacing: .04em; text-shadow: 0 0 8px rgba(0,212,255,.45); }
:root[data-theme="light"] .lcd { background: #1a1d26; }
.hlabel { font-size: 9px; text-transform: uppercase; letter-spacing: .08em; color: var(--text-3); }
.hfield { display: flex; flex-direction: column; align-items: center; gap: 0; }
.hfield .numfield, .hfield select { height: 22px; font-size: 12px; }
.mode-switch { display: inline-flex; background: var(--bg); border: 1px solid var(--line); border-radius: 6px; padding: 2px; }
.mode-switch button { border: 0; background: none; padding: 3px 9px; border-radius: 4px; cursor: pointer; color: var(--text-2); font-size: 12px; }
.mode-switch button.on { background: var(--accent); color: #fff; }

/* view tabs (main) */
.view-tabs { display: flex; align-items: center; gap: 2px; padding: 0 6px; height: 36px; border-bottom: 1px solid var(--line); background: var(--bg-2); flex-shrink: 0; overflow-x: auto; }
.view-tab { display: inline-flex; align-items: center; gap: 6px; padding: 6px 11px; border-radius: 6px; border: 0; background: none; color: var(--text-2); cursor: pointer; white-space: nowrap; }
.view-tab:hover { background: var(--bg-3); color: var(--text); }
.view-tab.active { background: var(--bg-4); color: var(--text); box-shadow: inset 0 -2px 0 var(--accent); }
.view-tab kbd { opacity: .6; }
.view-host { flex: 1; min-height: 0; position: relative; }
.view { position: absolute; inset: 0; display: flex; flex-direction: column; min-height: 0; }
.view.hidden { display: none; }
.view-toolbar { display: flex; align-items: center; gap: 6px; padding: 5px 8px; border-bottom: 1px solid var(--line); background: var(--bg-2); flex-shrink: 0; flex-wrap: wrap; min-height: 38px; }
.view-toolbar .sep { width: 1px; height: 20px; background: var(--line); margin: 0 4px; }
.empty-state { margin: auto; text-align: center; color: var(--text-3); max-width: 420px; padding: 30px; display: flex; flex-direction: column; align-items: center; gap: 12px; }
.empty-state h3 { margin: 0; color: var(--text); font-size: 18px; }

/* welcome / start screen */
.welcome-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 8px; }
.genre-card { padding: 10px; border-radius: 8px; border: 1px solid var(--line); background: var(--bg-2); cursor: pointer; text-align: left; }
.genre-card:hover { border-color: var(--accent); background: var(--bg-3); }
.genre-card.selected { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent); }
.genre-card b { display: block; font-size: 13px; }
.genre-card span { font-size: 11px; color: var(--text-3); }

/* responsive */
@media (max-width: 1100px) {
  .app-assistant { width: 260px; }
  .app-browser { width: 210px; }
}
@media (max-width: 1024px) {
  /* narrow screens: the assistant becomes a drawer over the main area so views keep their width */
  #app { grid-template-columns: auto 1fr; grid-template-areas: "header header" "browser main" "browser device" "status status"; }
  .app-browser { width: 200px; }
  .app-assistant { position: fixed; top: var(--header-h); bottom: var(--status-h); right: 0; z-index: 50; box-shadow: var(--shadow); width: min(300px, 85vw); }
}
@media (max-width: 820px) {
  #app { grid-template-columns: 1fr; grid-template-areas: "header" "main" "device" "status"; }
  .app-browser, .app-assistant { position: fixed; top: var(--header-h); bottom: var(--status-h); z-index: 50; box-shadow: var(--shadow); }
  .app-browser { left: 0; }
  .app-assistant { right: 0; }
}

/* header density */
.app-header select { max-width: 150px; }
.app-header .hfield select { max-width: 140px; }
.app-header .hgroup { padding: 0 6px; }
@media (max-width: 1750px) {
  .logo > div:last-child { display: none; }
  .app-header .hfield select { max-width: 112px; }
}
@media (max-width: 1350px) {
  .app-header .tap-btn, .app-header .lcd { min-width: 0; }
  .app-header .btn.primary > span:not(.icon) { display: none; }
}
@media (max-width: 1500px) {
  .app-header { gap: 4px; }
  .app-header .logo { display: none; }
  .app-header .hfield select { max-width: 96px; }
  .lcd { min-width: 84px; padding: 2px 6px; }
  .transport-btn { width: 30px; }
}

/* Song wizard length + Extend song dialog */
.wizard-length-line { margin: 4px 0 0; font-size: 12px; }
.extend-dialog { display: flex; flex-direction: column; gap: 10px; }
.extend-dialog .row { gap: 10px; align-items: flex-end; }
.extend-quicks { gap: 6px !important; }
.extend-preview { margin: 0; padding: 8px 10px; border-radius: 6px; background: var(--bg-3); font-weight: 600; }
.extend-hint { margin: 0; }
.logo-tagline { transition: opacity .4s ease; }
.logo-tagline.fading { opacity: 0; }

/* Home-screen app (standalone, iOS black-translucent status bar): keep clear of the notch / home indicator */
@media (display-mode: standalone) {
  #app { box-sizing: border-box; height: 100dvh; padding: env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left); }
}