/* ═══════════════════════════════════════════════════════════════════════════
   Bonga2DJ — Main Stylesheet
   Dark / Light mode via data-theme attribute on <html>
   Retractable nested left nav, mobile-first responsive
   ═══════════════════════════════════════════════════════════════════════════ */

/* ── Custom Properties ─────────────────────────────────────────────────────── */
:root {
  /* Brand */
  --c-primary:   #7c3aed;
  --c-primary-l: #a78bfa;
  --c-accent:    #2bd9e9;
  --c-amber:     #f7b733;
  --c-green:     #22c55e;
  --c-red:       #ef4444;
  --c-rose:      #f43f5e;

  /* Dark theme defaults */
  --c-bg:        #08080e;
  --c-bg2:       #0f0f18;
  --c-surface:   #13131d;
  --c-surface2:  #1b1b28;
  --c-border:    rgba(255,255,255,.09);
  --c-border2:   rgba(255,255,255,.16);
  --c-text:      #f2eee6;
  --c-text2:     #a9a6bb;
  --c-text3:     #6e6c81;

  /* Sidebar */
  --sidebar-w:     240px;
  --sidebar-w-col: 62px;   /* collapsed width */
  --topbar-h:      52px;

  /* Typography */
  --f-disp:  'Bricolage Grotesque', sans-serif;
  --f-body:  'Inter', sans-serif;
  --f-mono:  'Space Mono', monospace;

  /* Misc */
  --radius:  10px;
  --radius-sm: 6px;
  --shadow:  0 8px 30px rgba(0,0,0,.45);
  --trans:   .2s cubic-bezier(.2,.8,.2,1);
  --grad:    linear-gradient(110deg,var(--c-amber),var(--c-rose) 42%,var(--c-primary) 82%);
}

html[data-theme="light"] {
  --c-bg:       #f0ecdf;
  --c-bg2:      #e7e2d0;
  --c-surface:  #fffdf7;
  --c-surface2: #f5f0e4;
  --c-border:   rgba(0,0,0,.10);
  --c-border2:  rgba(0,0,0,.18);
  --c-text:     #14120d;
  --c-text2:    #4a4637;
  --c-text3:    #807a6b;
  --shadow:     0 4px 20px rgba(0,0,0,.15);
}

/* ── Reset & Base ──────────────────────────────────────────────────────────── */
*,*::before,*::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  background: var(--c-bg);
  color: var(--c-text);
  font-family: var(--f-body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  transition: background var(--trans), color var(--trans);
}
h1,h2,h3,h4,h5 { font-family: var(--f-disp); font-weight: 700; line-height: 1.1; letter-spacing: -.02em; }
a { color: var(--c-primary-l); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; }
button { cursor: pointer; font-family: inherit; font-size: inherit; border: none; background: none; }
input, select, textarea {
  font-family: inherit; font-size: .875rem;
  background: var(--c-bg); color: var(--c-text);
  border: 1px solid var(--c-border2);
  border-radius: var(--radius-sm);
  padding: .55rem .8rem;
  outline: none;
  transition: border-color var(--trans);
  width: 100%;
}
input:focus, select:focus, textarea:focus { border-color: var(--c-primary); }
::-webkit-scrollbar { width: 5px; height: 5px; }
::-webkit-scrollbar-thumb { background: var(--c-text3); border-radius: 3px; }

/* ── App Layout ────────────────────────────────────────────────────────────── */
#app {
  display: flex;
  min-height: 100vh;
}

/* ── Sidebar ───────────────────────────────────────────────────────────────── */
.sidebar {
  position: fixed;
  top: 0; left: 0; bottom: 0;
  width: var(--sidebar-w);
  background: var(--c-surface);
  border-right: 1px solid var(--c-border);
  display: flex;
  flex-direction: column;
  z-index: 200;
  transition: width var(--trans), transform var(--trans);
  overflow: hidden;
}

.sidebar.collapsed { width: var(--sidebar-w-col); }
.sidebar.collapsed .sidebar-label,
.sidebar.collapsed .brand-name { opacity: 0; pointer-events: none; width: 0; overflow: hidden; }
.sidebar.collapsed .nav-group-children { display: none; }

/* mobile: hidden off-screen by default */
@media(max-width: 860px) {
  .sidebar { transform: translateX(-100%); width: var(--sidebar-w) !important; }
  .sidebar.open { transform: translateX(0); }
}

.sidebar-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 12px;
  border-bottom: 1px solid var(--c-border);
  flex-shrink: 0;
}
.brand-logo {
  width: 30px; height: 30px; border-radius: 9px;
  background: var(--grad);
  position: relative; flex-shrink: 0;
}
.brand-logo::before {
  content: ''; position: absolute;
  width: 3px; height: 12px; top: 9px; left: 8px;
  background: var(--c-bg);
  border-radius: 2px;
  box-shadow: 5px 1px 0 var(--c-bg), 10px -1px 0 var(--c-bg);
  animation: eq 1.1s ease-in-out infinite alternate;
}
@keyframes eq { 0%{height:5px;top:12px} 100%{height:14px;top:8px} }
.brand-name { font-family: var(--f-disp); font-weight: 800; font-size: 17px; white-space: nowrap; transition: var(--trans); }

.sidebar-toggle {
  display: flex; flex-direction: column; gap: 4px;
  padding: 6px; border-radius: 7px;
  flex-shrink: 0;
  transition: background var(--trans);
}
.sidebar-toggle:hover { background: var(--c-surface2); }
.sidebar-toggle span { display: block; width: 18px; height: 2px; background: var(--c-text2); border-radius: 1px; transition: var(--trans); }

/* Nav groups */
.sidebar-nav { flex: 1; overflow-y: auto; overflow-x: hidden; padding: 10px 0; }
.nav-group { margin-bottom: 2px; }
.nav-group-header {
  display: flex; align-items: center; gap: 9px;
  padding: 9px 12px;
  border-radius: var(--radius-sm);
  margin: 0 6px;
  cursor: pointer;
  transition: background var(--trans);
  user-select: none;
  font-size: .83rem;
  font-weight: 600;
  color: var(--c-text2);
  letter-spacing: .03em;
}
.nav-group-header:hover { background: var(--c-surface2); color: var(--c-text); }
.nav-group-header .nav-icon { font-size: 16px; flex-shrink: 0; width: 20px; text-align: center; }
.nav-group-header .sidebar-label { flex: 1; white-space: nowrap; transition: var(--trans); }
.nav-group-header .nav-chevron { font-size: 10px; transition: transform var(--trans); margin-left: auto; }
.nav-group.open .nav-chevron { transform: rotate(90deg); }

.nav-group-children {
  margin-left: 14px;
  padding-left: 14px;
  border-left: 1px solid var(--c-border);
  overflow: hidden;
  max-height: 0;
  transition: max-height .3s ease;
}
.nav-group.open .nav-group-children { max-height: 600px; }

.nav-item {
  display: flex; align-items: center; gap: 9px;
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  margin: 1px 6px;
  cursor: pointer;
  transition: background var(--trans), color var(--trans);
  font-size: .83rem;
  color: var(--c-text2);
  white-space: nowrap;
}
.nav-item:hover { background: var(--c-surface2); color: var(--c-text); }
.nav-item.active { background: rgba(124,58,237,.2); color: var(--c-primary-l); border-left: 2px solid var(--c-primary); }
.nav-item .nav-icon { font-size: 15px; flex-shrink: 0; width: 20px; text-align: center; }
.nav-item .sidebar-label { transition: var(--trans); }

.sidebar-footer {
  border-top: 1px solid var(--c-border);
  padding: 10px 0;
  flex-shrink: 0;
}
.theme-toggle {
  display: flex; align-items: center; gap: 9px;
  padding: 9px 12px;
  margin: 0 6px;
  border-radius: var(--radius-sm);
  width: calc(100% - 12px);
  color: var(--c-text2);
  font-size: .83rem;
  transition: background var(--trans);
}
.theme-toggle:hover { background: var(--c-surface2); }
.theme-icon { font-size: 15px; width: 20px; text-align: center; }
.nav-signout { color: var(--c-red) !important; width: 100%; }

/* ── Main wrap ─────────────────────────────────────────────────────────────── */
.main-wrap {
  margin-left: var(--sidebar-w);
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
  transition: margin-left var(--trans);
}
.sidebar.collapsed ~ .main-wrap,
#sidebar.collapsed + * .main-wrap { margin-left: var(--sidebar-w-col); }
@media(max-width: 860px) {
  .main-wrap { margin-left: 0 !important; }
}

/* ── Topbar (mobile) ───────────────────────────────────────────────────────── */
.topbar {
  display: none;
  align-items: center;
  gap: 12px;
  padding: 0 16px;
  height: var(--topbar-h);
  background: var(--c-surface);
  border-bottom: 1px solid var(--c-border);
  position: sticky; top: 0; z-index: 100;
}
@media(max-width: 860px) { .topbar { display: flex; } }
.topbar-menu { font-size: 20px; color: var(--c-text2); }
.topbar-title { font-family: var(--f-disp); font-weight: 700; font-size: 16px; flex: 1; }
.topbar-actions { display: flex; align-items: center; gap: 10px; }
.topbar-theme { font-size: 18px; }

/* ── Page container ────────────────────────────────────────────────────────── */
.page-container {
  flex: 1;
  padding: 28px 32px;
  overflow-y: auto;
  scroll-padding-top: 20px;
}
@media(max-width: 640px) { .page-container { padding: 18px 16px; } }

/* ── Page header ───────────────────────────────────────────────────────────── */
.page-header {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 28px;
  flex-wrap: wrap;
}
.page-header h1 { font-size: clamp(22px,4vw,36px); flex: 1; }
.page-actions { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }

/* ── Buttons ───────────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; gap: 7px;
  padding: .55rem 1.1rem;
  border-radius: var(--radius);
  font-weight: 600; font-size: .875rem;
  transition: all var(--trans);
  border: 1px solid transparent;
  white-space: nowrap;
}
.btn--primary  { background: var(--c-primary); color: #fff; }
.btn--primary:hover { background: #6d28d9; }
.btn--secondary { background: var(--c-surface2); color: var(--c-text); border-color: var(--c-border2); }
.btn--secondary:hover { border-color: var(--c-primary); color: var(--c-primary-l); }
.btn--ghost  { background: transparent; color: var(--c-text2); border-color: var(--c-border); }
.btn--ghost:hover { background: var(--c-surface2); }
.btn--danger { background: var(--c-red); color: #fff; }
.btn--danger:hover { background: #dc2626; }
.btn--sm { padding: .35rem .75rem; font-size: .8rem; }
.btn--xs { padding: .2rem .55rem; font-size: .75rem; }
.btn--icon { padding: .5rem; border-radius: 8px; }
.btn:disabled { opacity: .45; cursor: not-allowed; }

/* ── Cards ─────────────────────────────────────────────────────────────────── */
.card {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: 14px;
  padding: 20px;
}
.card--hover { transition: transform var(--trans), border-color var(--trans), box-shadow var(--trans); }
.card--hover:hover { transform: translateY(-3px); border-color: var(--c-border2); box-shadow: var(--shadow); }
.card-title { font-size: 1rem; font-weight: 700; margin-bottom: 6px; }
.card-meta  { font-size: .78rem; color: var(--c-text3); font-family: var(--f-mono); }

/* ── Grid layouts ──────────────────────────────────────────────────────────── */
.grid-2 { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px,1fr)); gap: 16px; }
.grid-3 { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px,1fr)); gap: 14px; }
.grid-4 { display: grid; grid-template-columns: repeat(auto-fill, minmax(170px,1fr)); gap: 12px; }
.stack  { display: flex; flex-direction: column; gap: 10px; }
.row    { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }

/* ── Forms ─────────────────────────────────────────────────────────────────── */
.form-group { display: flex; flex-direction: column; gap: 5px; margin-bottom: 14px; }
.form-label { font-size: .84rem; font-weight: 600; color: var(--c-text2); }
.form-hint  { font-size: .75rem; color: var(--c-text3); }
.form-error { font-size: .78rem; color: var(--c-red); margin-top: 3px; }
.form-row   { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
@media(max-width:480px) { .form-row { grid-template-columns: 1fr; } }

/* ── Modals ────────────────────────────────────────────────────────────────── */
.modal-overlay {
  position: fixed; inset: 0; z-index: 500;
  background: rgba(0,0,0,.6);
  backdrop-filter: blur(6px);
  display: flex; align-items: center; justify-content: center;
  padding: 16px;
  animation: fadeIn .2s ease;
}
.modal-overlay.hidden { display: none; }
@keyframes fadeIn { from{opacity:0} to{opacity:1} }

.modal-box {
  background: var(--c-surface);
  border: 1px solid var(--c-border2);
  border-radius: 18px;
  padding: 28px;
  max-width: 580px; width: 100%;
  max-height: 92vh; overflow-y: auto;
  position: relative;
  animation: popIn .25s cubic-bezier(.2,.8,.2,1);
  box-shadow: var(--shadow);
}
.modal-box--sm  { max-width: 420px; }
.modal-box--xs  { max-width: 340px; }
.modal-box--lg  { max-width: 780px; }
@keyframes popIn { from{transform:translateY(16px) scale(.97);opacity:0} to{transform:none;opacity:1} }

.modal-close {
  position: absolute; top: 14px; right: 14px;
  width: 30px; height: 30px; border-radius: 8px;
  background: var(--c-surface2); color: var(--c-text2);
  font-size: 13px; line-height: 30px; text-align: center;
  transition: background var(--trans);
}
.modal-close:hover { background: var(--c-border2); color: var(--c-text); }

.modal-title { font-size: 1.25rem; font-weight: 700; margin-bottom: 18px; }

/* Sub-modal (popup within popup) */
.sub-modal { z-index: 600; }

/* Confirm dialog */
.confirm-msg { font-size: .95rem; margin-bottom: 20px; line-height: 1.55; }
.confirm-actions { display: flex; gap: 10px; justify-content: flex-end; }

/* ── Context menu ──────────────────────────────────────────────────────────── */
.context-menu {
  position: fixed; z-index: 800;
  background: var(--c-surface2);
  border: 1px solid var(--c-border2);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  min-width: 160px;
  overflow: hidden;
  animation: fadeIn .15s ease;
}
.context-menu.hidden { display: none; }
.context-menu-item {
  display: flex; align-items: center; gap: 9px;
  padding: 10px 14px;
  font-size: .84rem;
  cursor: pointer;
  transition: background var(--trans);
}
.context-menu-item:hover { background: var(--c-border); }
.context-menu-item.danger { color: var(--c-red); }
.context-menu-sep { height: 1px; background: var(--c-border); margin: 3px 0; }

/* ── Toast ─────────────────────────────────────────────────────────────────── */
.toast-container {
  position: fixed; bottom: 24px; right: 24px; z-index: 900;
  display: flex; flex-direction: column; gap: 8px;
  max-width: 360px; width: calc(100vw - 48px);
}
.toast {
  background: var(--c-surface2);
  border: 1px solid var(--c-border2);
  border-radius: var(--radius);
  padding: 13px 16px;
  font-size: .875rem;
  box-shadow: var(--shadow);
  animation: toastIn .25s ease;
  display: flex; align-items: flex-start; gap: 10px;
}
.toast--success { border-left: 3px solid var(--c-green); }
.toast--error   { border-left: 3px solid var(--c-red); }
.toast--warning { border-left: 3px solid var(--c-amber); }
@keyframes toastIn { from{transform:translateX(30px);opacity:0} to{transform:none;opacity:1} }

/* ── Data tables ───────────────────────────────────────────────────────────── */
.table-wrap { overflow-x: auto; border: 1px solid var(--c-border); border-radius: var(--radius); }
table { width: 100%; border-collapse: collapse; min-width: 480px; }
th,td { padding: 11px 14px; text-align: left; border-bottom: 1px solid var(--c-border); font-size: .84rem; }
th { font-family: var(--f-mono); font-size: .72rem; text-transform: uppercase; letter-spacing: .07em; color: var(--c-text3); background: var(--c-surface); }
tr:last-child td { border-bottom: none; }
tr:hover td { background: var(--c-surface2); }
td.mono { font-family: var(--f-mono); font-size: .78rem; }
.td-actions { display: flex; gap: 5px; }

/* ── Badges ────────────────────────────────────────────────────────────────── */
.badge {
  display: inline-block;
  font-size: .7rem; font-weight: 700; font-family: var(--f-mono);
  padding: .18rem .55rem; border-radius: 20px;
  text-transform: uppercase; letter-spacing: .05em;
}
.badge--primary  { background: rgba(124,58,237,.25); color: var(--c-primary-l); }
.badge--green    { background: rgba(34,197,94,.2);   color: var(--c-green); }
.badge--amber    { background: rgba(247,183,51,.2);  color: var(--c-amber); }
.badge--red      { background: rgba(239,68,68,.2);   color: var(--c-red); }
.badge--gray     { background: var(--c-surface2);    color: var(--c-text3); }

/* ── Inline editable fields ─────────────────────────────────────────────────── */
.editable {
  display: inline-flex; align-items: center; gap: 5px;
  cursor: pointer;
  border-radius: 4px;
  padding: 2px 6px;
  transition: background var(--trans);
}
.editable:hover { background: var(--c-surface2); }
.editable .edit-icon { font-size: 11px; opacity: .5; }
.editable-input {
  background: var(--c-surface2);
  border: 1px solid var(--c-primary);
  border-radius: 4px;
  padding: 3px 8px;
  font-size: inherit;
  color: var(--c-text);
  min-width: 80px;
}

/* ── Beat Lab sequencer ──────────────────────────────────────────────────────── */
.seq-grid { display: grid; gap: 4px; }
.seq-row  { display: flex; align-items: center; gap: 4px; margin-bottom: 4px; }
.seq-label { width: 56px; font-size: .7rem; font-weight: 700; text-transform: uppercase; color: var(--c-text3); flex-shrink: 0; }
.seq-step {
  width: 28px; height: 28px; border-radius: 4px;
  background: var(--c-surface2);
  border: 1px solid var(--c-border);
  cursor: pointer;
  transition: all .1s;
  flex-shrink: 0;
}
.seq-step.active { background: var(--c-primary); border-color: var(--c-primary); }
.seq-step:hover { border-color: var(--c-primary-l); }

/* ── Storage algorithm cards ─────────────────────────────────────────────────── */
.algo-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(190px,1fr)); gap: 12px; }
.algo-card {
  background: var(--c-surface2);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  padding: 16px;
  cursor: pointer;
  transition: all var(--trans);
  position: relative;
}
.algo-card:hover { border-color: var(--c-border2); }
.algo-card.active { border-color: var(--c-primary); background: rgba(124,58,237,.12); }
.algo-card .algo-icon  { font-size: 22px; margin-bottom: 8px; }
.algo-card .algo-name  { font-weight: 700; font-size: .9rem; margin-bottom: 4px; }
.algo-card .algo-desc  { font-size: .75rem; color: var(--c-text3); line-height: 1.4; }
.algo-card .algo-badge { position: absolute; top: 8px; right: 8px; }

/* ── Pricing tiers ───────────────────────────────────────────────────────────── */
.tier-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(155px,1fr)); gap: 12px; }
.tier-card {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: 14px;
  padding: 18px;
  position: relative;
  transition: all var(--trans);
  text-align: center;
}
.tier-card:hover { transform: translateY(-4px); border-color: var(--c-border2); }
.tier-card.popular { border-color: var(--c-primary) !important; box-shadow: 0 0 0 1px var(--c-primary); }
.tier-badge {
  position: absolute; top: -10px; left: 50%; transform: translateX(-50%);
  background: var(--grad); color: #08080e;
  font-family: var(--f-mono); font-size: .65rem; font-weight: 700;
  padding: .15rem .7rem; border-radius: 20px; white-space: nowrap;
}
.tier-name  { font-size: 1rem; font-weight: 700; }
.tier-price { font-family: var(--f-disp); font-weight: 800; font-size: 2rem; margin: 8px 0 2px; }
.tier-price small { font-size: .8rem; color: var(--c-text3); font-weight: 400; }
.tier-desc  { font-size: .75rem; color: var(--c-text3); margin-bottom: 14px; }
.tier-features { list-style: none; font-size: .78rem; text-align: left; color: var(--c-text2); display: grid; gap: 6px; }

/* ── Live clip grid ──────────────────────────────────────────────────────────── */
.clip-grid-row  { display: flex; gap: 5px; align-items: center; margin-bottom: 5px; }
.clip-track-label { width: 80px; font-size: .72rem; font-weight: 600; color: var(--c-text3); flex-shrink: 0; }
.clip-slot {
  width: 88px; height: 66px;
  border-radius: 8px; border: 1px solid var(--c-border);
  background: var(--c-surface2);
  cursor: pointer;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  font-size: .72rem; gap: 3px;
  transition: all var(--trans);
  overflow: hidden;
  position: relative;
}
.clip-slot:hover { border-color: var(--c-border2); }
.clip-slot.has-clip { border-color: rgba(124,58,237,.5); }
.clip-slot.playing { background: rgba(124,58,237,.3); border-color: var(--c-primary); animation: pulse .8s ease-in-out infinite alternate; }
@keyframes pulse { from{box-shadow:0 0 0 rgba(124,58,237,0)} to{box-shadow:0 0 12px rgba(124,58,237,.5)} }
.clip-name { font-weight: 700; text-align: center; padding: 0 4px; }
.clip-type { font-size: .65rem; color: var(--c-text3); }

/* ── Auth pages ──────────────────────────────────────────────────────────────── */
.auth-page {
  min-height: 100vh;
  display: flex; align-items: center; justify-content: center;
  padding: 24px;
  background: var(--c-bg);
}
.auth-card {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: 18px;
  padding: 36px 32px;
  max-width: 420px; width: 100%;
  box-shadow: var(--shadow);
}
.auth-logo { text-align: center; font-size: 2rem; margin-bottom: 8px; }
.auth-title { text-align: center; font-size: 1.5rem; font-weight: 800; margin-bottom: 4px; }
.auth-sub   { text-align: center; color: var(--c-text3); font-size: .875rem; margin-bottom: 24px; }
.auth-footer { text-align: center; font-size: .82rem; color: var(--c-text3); margin-top: 20px; }

/* ── Settings color pickers ─────────────────────────────────────────────────── */
.color-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.color-row  { display: flex; flex-direction: column; gap: 5px; font-size: .82rem; font-weight: 600; }
.color-pick { display: flex; align-items: center; gap: 8px; }
.color-pick input[type="color"] { width: 36px; height: 36px; border: none; border-radius: 6px; cursor: pointer; padding: 0; }
.color-pick input[type="text"]  { flex: 1; }

/* ── Leaderboard ─────────────────────────────────────────────────────────────── */
.lb-row {
  display: flex; align-items: center; gap: 14px;
  padding: 12px 16px;
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  background: var(--c-surface);
  margin-bottom: 8px;
  transition: background var(--trans);
}
.lb-row:hover { background: var(--c-surface2); }
.lb-rank  { font-family: var(--f-disp); font-weight: 800; font-size: 20px; color: var(--c-amber); min-width: 30px; }
.lb-name  { flex: 1; font-weight: 600; font-size: .9rem; }
.lb-meta  { font-size: .78rem; color: var(--c-text3); font-family: var(--f-mono); }
.lb-like-btn { background: transparent; border: 1px solid var(--c-border); border-radius: 6px; padding: 5px 10px; color: var(--c-text2); font-size: .78rem; transition: all var(--trans); }
.lb-like-btn:hover { border-color: var(--c-rose); color: var(--c-rose); }
.lb-like-btn.liked { background: rgba(244,63,94,.15); border-color: var(--c-rose); color: var(--c-rose); }

/* ── Piano roll mini ─────────────────────────────────────────────────────────── */
.piano-keys { display: flex; height: 100px; gap: 2px; }
.piano-key  { flex: 1; border-radius: 0 0 4px 4px; }
.piano-key.white { background: var(--c-surface2); border: 1px solid var(--c-border); }
.piano-key.black { background: var(--c-text); height: 65px; flex: .6; }
.piano-key.active { background: var(--c-primary); }

/* ── Helpers ─────────────────────────────────────────────────────────────────── */
.hidden    { display: none !important; }
.text-mono { font-family: var(--f-mono); }
.text-sm   { font-size: .83rem; }
.text-xs   { font-size: .74rem; }
.text-muted { color: var(--c-text3); }
.text-primary { color: var(--c-primary-l); }
.text-success { color: var(--c-green); }
.text-danger  { color: var(--c-red); }
.text-center  { text-align: center; }
.mt-1  { margin-top: 6px; }
.mt-2  { margin-top: 12px; }
.mt-4  { margin-top: 24px; }
.mb-1  { margin-bottom: 6px; }
.mb-2  { margin-bottom: 12px; }
.mb-4  { margin-bottom: 24px; }
.gap-2 { gap: 8px; }
.gap-3 { gap: 12px; }
.divider { border: none; border-top: 1px solid var(--c-border); margin: 18px 0; }
.loading-spinner {
  width: 32px; height: 32px; border-radius: 50%;
  border: 3px solid var(--c-border);
  border-top-color: var(--c-primary);
  animation: spin .7s linear infinite;
  margin: 32px auto;
}
@keyframes spin { to{transform:rotate(360deg)} }
.empty-state { text-align: center; padding: 48px 24px; color: var(--c-text3); }
.empty-state .empty-icon { font-size: 3rem; margin-bottom: 14px; }
.empty-state h3 { font-size: 1.1rem; margin-bottom: 8px; color: var(--c-text2); }

/* ── Help popup FAB ──────────────────────────────────────────────────────────── */
.help-fab {
  position: fixed; right: 20px; bottom: 20px; z-index: 400;
  width: 44px; height: 44px; border-radius: 50%;
  background: var(--c-primary);
  color: #fff; font-size: 20px; font-weight: 800;
  box-shadow: 0 6px 20px rgba(124,58,237,.45);
  transition: transform var(--trans);
}
.help-fab:hover { transform: scale(1.1) rotate(10deg); }

/* ── Overlay for mobile sidebar ──────────────────────────────────────────────── */
.sidebar-overlay {
  display: none; position: fixed; inset: 0; z-index: 190;
  background: rgba(0,0,0,.5);
}
@media(max-width: 860px) {
  .sidebar-overlay.active { display: block; }
}

/* ── Responsive tweaks ───────────────────────────────────────────────────────── */
@media(max-width: 640px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .tier-grid { grid-template-columns: 1fr 1fr; }
  .form-row  { grid-template-columns: 1fr; }
  .color-grid{ grid-template-columns: 1fr; }
}
