/* Zoukable · Storybook ship
   Single presentation layer over functional styles. No character replacements.
   Spacing: 4/8/12/16/24/32. One primary action color. Shared UI symbol sheet. */
:root {
  color-scheme: light;
  --zk-bg: var(--member-paper); --zk-panel: var(--member-surface); --zk-raised: var(--member-soft);
  --zk-line: var(--member-line); --zk-text: var(--member-ink); --zk-muted: var(--member-muted);
  --zk-accent: var(--member-teal); --zk-accent-ink: #ffffff; --zk-focus: var(--member-gold-ink);
}
body {
  --bg: var(--zk-bg); --paper: var(--zk-panel); --ink: var(--zk-text);
  --muted: var(--zk-muted); --line: var(--zk-line); --nav: var(--member-paper);
  --forest: var(--zk-accent); --accent: var(--zk-accent); --wash: var(--zk-raised);
  --radius: 18px; --mint: #bce3cf;
  background: var(--zk-bg); color: var(--zk-text);
  font: 15px/1.6 var(--member-body);
  -webkit-font-smoothing: antialiased;
}
html { background: var(--zk-bg); scroll-padding-top: 80px; }
[hidden] { display: none !important; }
:focus-visible { outline: 3px solid var(--zk-focus); outline-offset: 4px; }
.skip { color: var(--zk-accent-ink); background: var(--zk-focus); border-radius: 10px; }
.shell { grid-template-columns: 232px minmax(0, 1fr); background: none; }
.sidebar { background: var(--nav); border-right: 1px solid var(--member-line); padding: 28px 20px; box-shadow: none; }
.wordmark { color: var(--zk-text); letter-spacing: -.04em; }
/* The original wordmark and avatar markup are deliberately untouched. */
.sidebar-label { color: var(--zk-muted); font-size: 10px; letter-spacing: .12em; margin: 40px 12px 12px; }
.sidebar nav { gap: 6px; }
.sidebar nav button { align-items: center; min-height: 48px; padding: 12px; gap: 12px; border: 1px solid transparent; border-radius: 12px; color: var(--zk-muted); font-size: 14px; }
.sidebar nav button:hover { background: var(--zk-panel); color: var(--zk-text); }
.sidebar nav button.active { background: #e6ecdf; border-color: #cdd7c5; color: #234d52; box-shadow: none; }
.sidebar nav button.active::before { content: none; }
.zk-icon { display: block; width: 21px; height: 21px; flex: 0 0 21px; }
.sidebar-foot { padding: 24px 12px 0; color: var(--zk-muted); }
.sidebar-foot p { font: 500 16px/1.6 system-ui, sans-serif; margin-bottom: 24px; }
.sidebar-foot strong { color: var(--zk-text); font-weight: 650; }
.sidebar-foot a { color: var(--zk-muted); line-height: 1.5; }
.sidebar-foot a:hover { color: var(--zk-text); text-decoration: underline; }
.workspace { min-width: 0; }
.topbar { height: 68px; padding: 0 40px; background: var(--zk-bg); border-color: var(--member-line); }
#breadcrumb { color: var(--zk-muted); font-size: 10px; letter-spacing: .1em; }
.account { min-width: 0; gap: 12px; color: var(--zk-muted); }
.avatar { background: var(--zk-panel); border: 1px solid var(--zk-line); color: var(--zk-text); }
main { max-width: 1216px; padding: 32px 40px 56px; background: transparent; }
#view { max-width: 1100px; margin: 0 auto; }
h1, h2, h3, .login-card h2, .card h2, .section-head h2 { font-family: var(--member-display); font-weight:400; color: var(--zk-text); }
h1 { font-size: clamp(28px, 3.2vw, 40px); font-weight: 400; line-height: 1.16; letter-spacing: -.04em; }
h1 em { font-style: normal; font-weight: inherit; color: var(--zk-accent); }
h2, .card h2, .section-head h2 { font-size: 20px; font-weight: 400; line-height: 1.3; letter-spacing: -.025em; }
h3 { font-size: 16px; font-weight: 400; line-height: 1.45; letter-spacing: -.01em; }
p { overflow-wrap: break-word; }
.eyebrow, .kicker { color: var(--zk-accent); font-size: 10px; font-weight: 700; letter-spacing: .12em; margin-bottom: 12px; }
.muted, small, .help, .auth-note { color: var(--zk-muted); }
.help { font-size: 12px; line-height: 1.6; }
.intro { align-items: center; gap: 24px; margin: 0 0 28px; }
.intro > div:first-child { min-width: 0; }
.intro h1 { margin: 0 0 12px; }
.intro p.muted { font-size: 14px; max-width: 56ch; margin: 0; }
.zk-intro { display: flex; min-height: 130px; padding-bottom: 24px; border-bottom: 1px solid var(--member-line); }
.zk-world-art { display: grid; place-items: center; gap: 3px; flex: 0 0 100px; color: var(--zk-accent); }
.zk-world-art svg { width: 88px; height: 88px; }
.zk-world-art span { font-size: 10px; letter-spacing: .07em; color: var(--zk-muted); }
[data-zk-world=dashboard] .zk-world-art { color: #a7d8be; }
[data-zk-world=library] .zk-world-art { color: #e3c58c; }
[data-zk-world=timing] .zk-world-art { color: #a4ccef; }
[data-zk-world=social] .zk-world-art { color: #d9adcd; }
.card, .stat, .hero, .next-step, .world-detail { background: var(--zk-panel); color: var(--zk-text); border: 1px solid var(--zk-line); border-radius: var(--radius); box-shadow: none; }
.card { padding: 24px; }
.hero { padding: 32px; }
.hero::after { content: none; }
.hero p { color: var(--zk-muted); }
.two { gap: 20px; grid-template-columns: minmax(0, 1.12fr) minmax(0, 1fr); align-items: start; }
.grid { gap: 16px; }
.grid > .card { height: 100%; display: flex; flex-direction: column; }
.grid > .card .actions { margin-top: auto; padding-top: 16px; }
.stats { gap: 12px; margin: 24px 0; }
.stat { padding: 20px; }
.stat b { font: 650 30px/1.25 system-ui, sans-serif; color: var(--zk-text); letter-spacing: -.04em; font-variant-numeric: tabular-nums; }
.stat span { font-size: 12px; color: var(--zk-muted); }
.section-head { margin: 28px 0 16px; }
.row { gap: 12px; border-color: var(--zk-line); }
.row .grow { min-width: 0; }
.row p { color: var(--zk-muted); line-height: 1.6; }
.number { color: var(--zk-muted); font: 600 17px/1.4 system-ui, sans-serif; font-variant-numeric: tabular-nums; }
.btn, button.primary, .cosmic-primary { min-height: 46px; padding: 11px 18px; border: 1px solid transparent; border-radius: 999px; color: var(--zk-accent-ink); background: var(--zk-accent); box-shadow: none; font-size: 14px; font-weight: 650; line-height: 1.5; text-align: center; }
.btn:not(:disabled):hover { background: var(--member-night); }
.btn.secondary, .btn.soft { background: var(--zk-raised); border-color: var(--member-control); color: var(--zk-text); box-shadow: none; }
.btn.secondary:not(:disabled):hover, .btn.soft:not(:disabled):hover { background: var(--member-soft); border-color: var(--member-teal); }
.btn.danger { background: #fff0ee; color: #8c302e; border-color: #c98782; }
.text { color: var(--zk-accent); text-underline-offset: 4px; }
.actions { gap: 10px; margin-top: 20px; }
.tag { padding: 4px 9px; color: var(--member-muted); background: var(--member-soft); border: 1px solid var(--member-line); font-size: 11px; line-height: 1.5; max-width: 100%; white-space: normal; }
.tag.gold { color: #755214; background: #fff3d2; border-color: #d9be86; }
.form, .form-grid { gap: 16px; }
label, .form label { color: var(--member-ink); font-size: 12px; font-weight: 550; }
input, select, textarea { min-width: 0; min-height: 46px; margin-top: 7px; border: 1px solid var(--member-control); border-radius: 10px; background: var(--member-surface); color: var(--zk-text); font-size: 16px; }
input::placeholder, textarea::placeholder { color: var(--zk-muted); opacity: 1; }
input:focus, select:focus, textarea:focus { border-color: var(--zk-focus); }
input[type=checkbox], input[type=range] { accent-color: var(--zk-accent); }
input[type=checkbox] { min-height: 18px; width: 18px; }
input[type=range] { background: transparent; }
.zk-practice-settings { margin: 0; padding: 0; border: 1px solid var(--member-control); border-radius: 10px; background: var(--member-paper); }
.zk-practice-settings summary { cursor: pointer; padding: 12px 14px; font-size: 13px; color: var(--zk-text); }
.zk-practice-settings summary small { display: block; padding-left: 16px; margin-top: 2px; font-size: 11px; font-weight: 400; color: var(--zk-muted); }
.zk-practice-settings[open] summary { border-bottom: 1px solid var(--zk-line); }
.zk-settings-grid { padding: 16px; }
.empty { color: var(--zk-muted); background: var(--member-paper); border: 1px dashed var(--member-control); border-radius: 12px; padding: 20px; }
.empty strong { color: var(--zk-text); }
.empty::before { content: none; }
#queue > .muted:only-child { margin: 0; padding: 22px 18px; border: 1px dashed var(--member-control); border-radius: 12px; color: var(--zk-muted); font-size: 14px; }
.notice { background: #e9f7ef; border-color: #8abd9c; color: #245f42; border-radius: 12px; }
.notice.error { background: #fff0ef; border-color: #c98782; color: #8c302e; }
.demo-band { background: #fff4db; color: #725219; border-color: #d5b974; border-radius: 12px; }
.progress-bar { background: var(--member-soft); }
.progress-bar > span { background: var(--zk-accent); }
progress { accent-color: var(--zk-accent); }
.rhythm-layout { gap: 20px; }
.tempo strong, .timer { font-family: inherit; font-weight: 650; color: var(--zk-text); font-variant-numeric: tabular-nums; }
.beat-grid button { background: var(--member-paper); border-color: var(--member-control); color: var(--member-muted); border-radius: 9px; }
.beat-grid button.hit { background: var(--member-soft); border-color: var(--member-teal); color: var(--member-teal); }
.beat-grid button.playing { outline-color: var(--zk-focus); background: var(--member-teal); color: #fff; }
.rhythm-count, .cue { background: var(--member-soft); color: var(--zk-text); border-color: var(--zk-accent); border-radius: 10px; }
.cue p { color: var(--zk-text); }
.feedback button { background: var(--zk-raised); border-color: var(--member-control); color: var(--zk-text); border-radius: 10px; }
.feedback button.selected { background: var(--zk-accent); color: var(--zk-accent-ink); border-color: var(--zk-accent); }
dialog { background: var(--zk-panel); color: var(--zk-text); border: 1px solid var(--member-control); border-radius: 20px; }
dialog::backdrop { background: #060911b8; backdrop-filter: blur(4px); }
.workspace-foot { padding: 20px 40px; border-color: var(--member-line); color: var(--zk-muted); }
.z-mobile-nav { display: none; }
@media (max-width: 1100px) {
  .shell { grid-template-columns: 208px minmax(0, 1fr); }
  .sidebar { padding: 24px 14px; }
  main { padding: 28px 24px 48px; }
  .topbar { padding: 0 24px; }
  .two, .auth-grid, .rhythm-layout { grid-template-columns: minmax(0, 1fr); }
}
@media (max-width: 700px) {
  body { padding-bottom: calc(84px + env(safe-area-inset-bottom)); }
  .shell { display: block; }
  .sidebar { position: relative; height: auto; min-height: 64px; padding: 14px 18px; border-right: 0; border-bottom: 1px solid var(--member-line); }
  .wordmark { width: fit-content; font-size: 22px; }
  .sidebar-label, .sidebar nav, .sidebar-foot { display: none; }
  .topbar { height: auto; min-height: 44px; padding: 8px 18px; background: var(--zk-bg); }
  #breadcrumb { display: none; }
  .account { width: 100%; justify-content: flex-end; flex-wrap: wrap; gap: 8px; }
  #connection { max-width: 55vw; font-size: 11px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
  .avatar { display: grid; }
  main { min-height: 0; padding: 24px 18px 32px; }
  h1 { font-size: 29px; }
  .intro { display: flex; align-items: flex-start; gap: 12px; margin-bottom: 24px; }
  .zk-intro { min-height: 0; padding-bottom: 24px; }
  .intro p.muted { font-size: 13px; line-height: 1.65; }
  .zk-world-art { flex-basis: 56px; padding-top: 4px; }
  .zk-world-art svg { width: 56px; height: 56px; }
  .zk-world-art span { font-size: 9px; letter-spacing: .02em; }
  .card, .hero { padding: 20px; border-radius: 16px; }
  .two, .grid, .auth-grid, .rhythm-layout { grid-template-columns: minmax(0, 1fr); gap: 16px; }
  .form-grid { grid-template-columns: minmax(0, 1fr); }
  .full { grid-column: 1 / -1; }
  .stats { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
  .stat { padding: 16px; }
  .stat b { font-size: 27px; }
  .row { flex-wrap: wrap; }
  .z-mobile-nav { position: fixed; z-index: 90; left: 10px; right: 10px; bottom: calc(8px + env(safe-area-inset-bottom)); display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 2px; padding: 6px; background: #fffdf7f7; border: 1px solid var(--member-control); border-radius: 19px; box-shadow: 0 6px 28px #0005; }
  .z-mobile-nav button { display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 5px; min-width: 0; min-height: 52px; padding: 6px 2px; border: 0; border-radius: 13px; background: transparent; color: var(--zk-muted); font: 600 10px/1.3 system-ui, sans-serif; }
  .z-mobile-nav button.active { color: var(--member-teal); background: var(--member-soft); }
  .z-mobile-nav .zk-icon { width: 20px; height: 20px; flex-basis: 20px; }
  .workspace-foot { display: none; }
}
@media (min-width: 360px) and (max-width: 700px) {
  #session-form { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
}

/* Mobile world art fix: the planet is a real visual anchor, not a tiny clipped badge. */
.zk-intro{position:relative}
.zk-world-art{flex:0 0 150px}
.zk-world-art svg{width:144px;height:144px;overflow:visible}
@media(max-width:700px){
 .zk-intro{display:grid!important;grid-template-columns:minmax(0,1fr) 112px;align-items:start!important;gap:12px!important}
 .zk-intro>div:first-child{grid-column:1}
 .zk-world-art{grid-column:2;grid-row:1;display:grid!important;justify-items:center!important;align-self:start!important;width:112px!important;min-width:112px!important;padding:0!important;overflow:visible!important}
 .zk-world-art svg{display:block!important;width:112px!important;height:112px!important;overflow:visible!important}
 .zk-world-art span{margin-top:-5px!important;font-size:10px!important;font-weight:700!important}
 .zk-intro h1{font-size:clamp(34px,10vw,46px)!important;line-height:1.05!important}
}