/* styles.css — clean, light, MuseScore-like layout. */

:root {
  --bg: #eceef1;
  --panel: #ffffff;
  --ink: #1f2430;
  --muted: #8a93a3;
  --line: #d7dce3;
  --accent: #2563eb;
  --accent-soft: #e3edff;
  --danger: #d6453f;
  --toolbar-h: 50px;
  --status-h: 26px;
  --side-w: 290px;
  --radius: 7px;
  --shadow: 0 1px 3px rgba(20, 30, 50, .12), 0 6px 18px rgba(20, 30, 50, .08);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }
html, body { height: 100%; margin: 0; }
body {
  background: var(--bg);
  color: var(--ink);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  font-size: 13px;
}

/* ---------------- Toolbar ---------------- */
#toolbar {
  height: var(--toolbar-h);
  min-height: var(--toolbar-h);
  background: var(--panel);
  border-bottom: 1px solid var(--line);
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 0 10px;
  overflow-x: auto;
  box-shadow: 0 1px 2px rgba(0, 0, 0, .04);
  z-index: 5;
}
.tb-group { display: flex; align-items: center; gap: 4px; }
.tb-sep { width: 1px; height: 28px; background: var(--line); margin: 0 4px; }
.tb-spacer { flex: 1 1 auto; }
.brand { gap: 7px; padding-right: 6px; }
.logo { font-size: 24px; line-height: 1; color: var(--accent); }
.brand-name { font-weight: 700; font-size: 15px; letter-spacing: .2px; }

.tb-btn {
  height: 32px;
  min-width: 32px;
  padding: 0 10px;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--ink);
  border-radius: var(--radius);
  cursor: pointer;
  font-size: 13px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: background .12s, border-color .12s, color .12s;
  white-space: nowrap;
}
.tb-btn.icon { font-size: 16px; padding: 0; }
.tb-btn:hover { background: #f1f4f9; border-color: #c2cad6; }
.tb-btn:active { transform: translateY(1px); }
.tb-btn:disabled { opacity: .4; cursor: default; }
.tb-btn.active,
.tb-btn.toggle.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}
/* While playing, the Play button becomes a red Stop button. */
#btn-play.active {
  background: var(--danger);
  border-color: var(--danger);
  color: #fff;
}
.palette-btn {
  height: 32px; min-width: 34px; padding: 0 6px;
  border: 1px solid var(--line); background: #fff; color: var(--ink);
  border-radius: var(--radius); cursor: pointer;
  font-size: 17px; line-height: 1;
  display: inline-flex; align-items: center; justify-content: center;
}
.palette-btn small { font-size: 9px; color: var(--muted); margin-left: 2px; }
.palette-btn:hover { background: #f1f4f9; }
.palette-btn.active { background: var(--accent); border-color: var(--accent); color: #fff; }
.palette-btn.active small { color: #dbe6ff; }
.palette-btn svg { display: block; }
#dyn-group .palette-btn { font-family: "Times New Roman", Georgia, serif; font-style: italic; font-weight: 700; font-size: 14px; }

/* ---------------- Main / side panel ---------------- */
#main { flex: 1 1 auto; display: flex; min-height: 0; }

#sidepanel {
  width: var(--side-w);
  min-width: var(--side-w);
  background: var(--panel);
  border-right: 1px solid var(--line);
  overflow-y: auto;
  padding: 12px;
}
.panel { border-bottom: 1px solid var(--line); padding: 6px 0 14px; margin-bottom: 12px; }
.panel:last-child { border-bottom: 0; }
.panel h2 { font-size: 11px; text-transform: uppercase; letter-spacing: .8px; color: var(--muted); margin: 4px 0 10px; }
.panel-head { display: flex; align-items: baseline; justify-content: space-between; }
.muted { color: var(--muted); font-size: 11px; }

label { display: block; font-size: 11px; color: var(--muted); margin-bottom: 9px; }
input[type=text], input[type=number], select {
  width: 100%;
  margin-top: 3px;
  padding: 6px 7px;
  border: 1px solid var(--line);
  border-radius: 6px;
  font-size: 13px;
  color: var(--ink);
  background: #fff;
}
input:focus, select:focus { outline: 2px solid var(--accent-soft); border-color: var(--accent); }
.row { display: flex; gap: 8px; align-items: flex-end; }
.row .grow { flex: 1 1 auto; }
.time-sig { display: inline-flex; align-items: center; gap: 3px; margin-top: 3px; }
.time-sig select { width: auto; min-width: 46px; }
.time-sig .slash { color: var(--muted); }

.btn-sm {
  padding: 6px 9px; border: 1px solid var(--line); background: #fff;
  border-radius: 6px; cursor: pointer; font-size: 12px; color: var(--ink);
}
.btn-sm:hover { background: #f1f4f9; }
.btn-sm.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn-sm.primary:hover { filter: brightness(1.05); }
.btn-sm.danger { color: var(--danger); border-color: #efc5c3; }

.add-staff { margin-top: 6px; }
.add-staff select { flex: 1 1 auto; }

.staff-row {
  border: 1px solid var(--line);
  border-radius: 7px;
  padding: 8px;
  margin-bottom: 8px;
  background: #fbfcfe;
}
.staff-row.current { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent-soft); }
.staff-row .staff-row-head { display: flex; align-items: center; gap: 6px; margin-bottom: 6px; }
.staff-row .staff-row-head input { margin: 0; font-weight: 600; }
.staff-row .grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 6px; }
.staff-row label { margin-bottom: 0; }
.staff-del {
  border: 1px solid var(--line); background: #fff; color: var(--danger);
  width: 26px; height: 26px; border-radius: 6px; cursor: pointer; flex: 0 0 auto;
}
.staff-del:hover { background: #fdecec; }
.micro-acc { display: flex; align-items: center; gap: 6px; margin-bottom: 10px; }
.micro-acc .btn-sm { min-width: 30px; font-family: serif; }

/* ---------------- Score / paper ---------------- */
#score-scroll {
  flex: 1 1 auto;
  overflow: auto;
  background: var(--bg);
  padding: 24px;
  display: flex;
  flex-direction: column;
  align-items: center;
}
#score { width: 100%; display: flex; flex-direction: column; align-items: center; outline: none; }
.page {
  width: min(96%, 860px);
  background: #fff;
  box-shadow: var(--shadow);
  margin-bottom: 22px;
  border-radius: 2px;
}
.page-host { width: 100%; }
.score-svg { display: block; width: 100%; height: auto; cursor: pointer; }

.cursor-bar { fill: var(--accent); animation: blink 1.05s steps(1, end) infinite; }
@keyframes blink { 0%, 50% { opacity: 1; } 50.01%, 100% { opacity: 0; } }

/* ---------------- Status bar ---------------- */
#statusbar {
  height: var(--status-h);
  min-height: var(--status-h);
  background: var(--panel);
  border-top: 1px solid var(--line);
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 0 12px;
  font-size: 11px;
  color: var(--muted);
}
#statusbar .grow { flex: 1 1 auto; }
#status-pos { color: var(--ink); font-weight: 600; }
#status-save.saving { color: var(--accent); }
#status-save.saved { color: #1a8a4f; }

/* ---------------- Overlays ---------------- */
.overlay {
  position: fixed; inset: 0;
  background: rgba(22, 28, 40, .42);
  display: flex; align-items: center; justify-content: center;
  z-index: 50;
}
.overlay.hidden, .hidden { display: none !important; }
.overlay-card {
  background: #fff; border-radius: 12px; box-shadow: var(--shadow);
  width: min(520px, 92vw); max-height: 86vh; overflow: auto; padding: 18px 20px;
}
.overlay-card.wide { width: min(640px, 94vw); }
.overlay-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 12px; }
.overlay-head h2 { margin: 0; font-size: 17px; }
.close-x { border: none; background: none; font-size: 24px; line-height: 1; cursor: pointer; color: var(--muted); }
.close-x:hover { color: var(--ink); }

.help-grid { display: grid; grid-template-columns: max-content 1fr; gap: 9px 16px; align-items: baseline; }
.help-grid > div:nth-child(odd) { text-align: right; white-space: nowrap; }
kbd {
  background: #f3f5f9; border: 1px solid var(--line); border-bottom-width: 2px;
  border-radius: 5px; padding: 1px 6px; font-size: 11px; font-family: ui-monospace, Menlo, Consolas, monospace;
}

.new-proj { margin-bottom: 14px; }
.new-proj input { flex: 1 1 auto; }
.project-list { display: flex; flex-direction: column; gap: 8px; }
.proj-item {
  border: 1px solid var(--line); border-radius: 8px; padding: 10px 12px;
  display: flex; align-items: center; gap: 10px;
}
.proj-item.current { border-color: var(--accent); background: var(--accent-soft); }
.proj-item .proj-info { flex: 1 1 auto; min-width: 0; }
.proj-item .proj-name { font-weight: 600; font-size: 14px; }
.proj-item .proj-meta { color: var(--muted); font-size: 11px; }
.proj-item .proj-actions { display: flex; gap: 5px; flex: 0 0 auto; }

/* ---------------- Toast ---------------- */
.toast {
  position: fixed; bottom: 38px; left: 50%; transform: translateX(-50%);
  background: #1f2430; color: #fff; padding: 9px 16px; border-radius: 8px;
  font-size: 13px; box-shadow: var(--shadow); z-index: 80; opacity: 1; transition: opacity .3s;
}
.toast.fade { opacity: 0; }

@media (max-width: 820px) {
  :root { --side-w: 240px; }
  .brand-name { display: none; }
}