/* The SP Tool's own look (values from soundpack-tool/src/index.css, app.css, soundpack.css) */
:root {
  color-scheme: dark;
  --bg: #0d0d0f;
  --bg-elevated: #141417;
  --ink: #f2f2f3;
  --ink-muted: rgba(242, 242, 243, 0.68);
  --ink-faint: rgba(242, 242, 243, 0.45);
  --ink-rgb: 242, 242, 243;
  --glass: rgba(255, 255, 255, 0.04);
  --glass-strong: rgba(255, 255, 255, 0.08);
  --glass-border: rgba(255, 255, 255, 0.1);
  --field-bg: rgba(255, 255, 255, 0.05);
  --accent: #f2f2f3;
  --accent-ink: #0d0d0f;
  --accent-rgb: 242, 242, 243;
  --ok: #3ecf8e;
  --card-glass: rgba(16, 16, 19, 0.9);
  font-family: -apple-system, "Segoe UI", system-ui, Roboto, sans-serif;
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
body { margin: 0; background: var(--bg); color: var(--ink); -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; }
img, svg { display: block; }
button { font: inherit; color: inherit; }
:focus-visible { outline: 2px solid var(--ink); outline-offset: 2px; }
.bg-art { position: fixed; inset: 0; z-index: -1; background: linear-gradient(rgba(13, 13, 15, 0.25), rgba(13, 13, 15, 0.25)), url("assets/bg.webp") center / cover no-repeat, var(--bg); }
.hub { display: flex; min-height: 100vh; }

.hub-side { position: fixed; top: 0; bottom: 0; left: 0; width: 240px; display: flex; flex-direction: column; padding: 24px 14px 16px; border-right: 1px solid var(--glass-border); background: rgba(13, 13, 15, 0.55); backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px); z-index: 5; }
.side-logo { display: block; margin: 0 8px 22px; }
.side-logo img { width: 130px; height: auto; }
.hub-nav { display: flex; flex-direction: column; gap: 2px; }
.hub-nav-item { display: flex; align-items: center; gap: 13px; width: 100%; padding: 11px 14px; border: 1px solid transparent; border-radius: 12px; background: transparent; color: var(--ink-muted); font-size: 0.86rem; font-weight: 600; text-align: left; cursor: pointer; transition: background 0.15s, color 0.15s; }
.hub-nav-item:hover { background: var(--glass); color: var(--ink); }
.hub-nav-item.active { background: rgba(var(--accent-rgb), 0.1); color: var(--ink); font-weight: 700; }
.hub-side-foot { margin-top: auto; padding-top: 10px; border-top: 1px solid var(--glass-border); display: flex; flex-direction: column; gap: 8px; }
.hub-tag { padding: 0 12px; font-size: 0.7rem; color: var(--ink-faint); }

.hub-main { flex: 1; min-width: 0; margin-left: 240px; position: relative; }
.topright { position: fixed; top: 12px; right: 18px; z-index: 6; display: flex; align-items: center; gap: 10px; }
.demo-pill { display: inline-flex; align-items: center; gap: 8px; padding: 8px 14px; border: 1px solid var(--glass-border); border-radius: 999px; background: rgba(13, 13, 15, 0.72); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px); font-size: 0.72rem; font-weight: 800; letter-spacing: 0.06em; }
.demo-pill i { width: 8px; height: 8px; border-radius: 50%; background: var(--ok); box-shadow: 0 0 10px var(--ok); }

.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 10px 18px; border: 1px solid transparent; border-radius: 10px; font-size: 0.86rem; font-weight: 700; cursor: pointer; white-space: nowrap; transition: filter 0.15s, background 0.15s, transform 0.15s; }
.btn.sm { padding: 7px 14px; font-size: 0.8rem; }
.btn.primary { background: var(--accent); color: var(--accent-ink); }
.btn.primary:hover { filter: brightness(0.9); }
.btn.ghost { background: var(--glass); border-color: var(--glass-border); color: var(--ink); }
.btn.ghost:hover { background: var(--glass-strong); }
.btn.big { padding: 16px 20px; border-radius: 16px; width: 100%; }

.hl-center { min-height: 100vh; display: flex; flex-direction: column; align-items: center; padding: 72px 40px 24px; text-align: center; }
.hl-logo { height: 150px; width: auto; margin-bottom: 8px; }
.hub-welcome { margin: 8px 0 0; font-size: 1.5rem; letter-spacing: -0.02em; }
.hl-tag { margin: 8px 0 36px; color: rgba(var(--ink-rgb), 0.62); font-size: 0.95rem; }
.hl-cards { display: grid; grid-template-columns: repeat(4, minmax(0, 300px)); gap: 18px; justify-content: center; width: 100%; }
.hl-card { display: flex; flex-direction: column; align-items: flex-start; gap: 10px; padding: 26px 26px 24px; border: 1px solid rgba(var(--ink-rgb), 0.1); border-radius: 18px; background: var(--card-glass); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); text-align: left; cursor: pointer; box-shadow: 0 6px 22px rgba(0, 0, 0, 0.1); transition: transform 0.15s, box-shadow 0.15s; }
.hl-card:hover { transform: translateY(-3px); box-shadow: 0 16px 38px rgba(0, 0, 0, 0.18); }
.hl-icon { width: 44px; height: 44px; display: grid; place-items: center; border: 1px solid rgba(var(--ink-rgb), 0.14); border-radius: 12px; margin-bottom: 6px; }
.hl-icon svg { width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; }
.hl-card strong { font-size: 1.2rem; letter-spacing: -0.01em; }
.hl-text { color: rgba(var(--ink-rgb), 0.66); font-size: 0.88rem; line-height: 1.5; }
.hl-card ul { margin: 4px 0 6px; padding-left: 18px; color: rgba(var(--ink-rgb), 0.6); font-size: 0.82rem; line-height: 1.75; }
.hl-open { margin-top: auto; font-weight: 800; font-size: 0.9rem; }

.sb-main { padding: 22px 32px 48px; }
.back { margin-bottom: 16px; }
.sb-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 18px; }
.head-actions { display: flex; gap: 8px; flex: none; }
.sp-title { margin: 0; font-size: 1.4rem; letter-spacing: -0.01em; }
.sb-summary { margin: 12px 0 0; max-width: 760px; font-size: 0.88rem; line-height: 1.55; color: var(--ink-muted); }
.sb-summary strong { color: var(--ink); }
.sb-summary-count { padding: 2px 9px; border-radius: 8px; background: rgba(var(--accent-rgb), 0.12); font-weight: 700; }
.note { margin: 12px 0 22px; color: var(--ink-faint); font-size: 0.78rem; }
.sb-section + .sb-section { margin-top: 26px; padding-top: 22px; border-top: 1px solid var(--glass-border); }
.sb-group-label { display: flex; align-items: center; gap: 9px; margin: 0 0 10px; font-size: 0.78rem; font-weight: 700; letter-spacing: 0.03em; text-transform: uppercase; color: var(--ink-muted); }
.sb-group-label em { font-style: normal; margin-left: auto; font-size: 0.7rem; font-weight: 700; padding: 2px 9px; border-radius: 8px; background: rgba(var(--ink-rgb), 0.06); color: var(--ink-faint); }
.sb-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 12px; }
.sb-card { display: flex; flex-direction: column; gap: 10px; padding: 14px 16px; border: 1px solid var(--glass-border); border-radius: 14px; background: var(--card-glass); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); transition: border-color 0.15s, background 0.15s; }
.sb-card.has-file { border-color: rgba(var(--accent-rgb), 0.55); }
.sb-card.drop-over { border-color: var(--accent); box-shadow: 0 0 0 3px var(--glass-strong); }
.sb-card-head { display: flex; justify-content: space-between; align-items: center; }
.sb-card-head strong { font-size: 0.92rem; }
.sb-x { border: none; background: transparent; color: var(--ink-faint); cursor: pointer; padding: 2px 4px; font-size: 0.9rem; line-height: 1; }
.sb-x:hover { color: var(--ink); }
.sb-file { display: block; width: 100%; padding: 10px 12px; border: 1px solid transparent; border-radius: 10px; background: var(--field-bg); color: var(--ink-faint); font-size: 0.8rem; text-align: left; cursor: pointer; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.sb-file:hover { color: var(--ink); border-color: var(--glass-border); }
.sb-file.assigned { color: var(--ink); }
.sb-vol { display: flex; align-items: center; gap: 10px; font-size: 0.72rem; color: var(--ink-faint); }
.sb-vol input[type="range"] { flex: 1; min-width: 0; accent-color: var(--accent); }
.sb-norm { border: 1px solid var(--glass-border); border-radius: 999px; background: var(--glass); color: var(--ink-muted); font-size: 0.7rem; font-weight: 700; padding: 3px 10px; cursor: pointer; }
.sb-norm.on { background: var(--accent); border-color: transparent; color: var(--accent-ink); }
.sb-foot { display: flex; justify-content: space-between; align-items: center; font-size: 0.72rem; color: var(--ink-faint); }
.sb-play { width: 30px; height: 30px; display: grid; place-items: center; border-radius: 50%; border: 1px solid var(--glass-border); background: var(--glass); color: var(--ink); cursor: pointer; font-size: 0.62rem; }
.sb-play:hover { background: var(--glass-strong); }

.modal { width: min(420px, calc(100vw - 32px)); padding: 40px 34px 28px; border-radius: 28px; background: rgba(20, 20, 23, 0.96); border: 1px solid rgba(var(--ink-rgb), 0.1); color: var(--ink); text-align: center; }
.modal::backdrop { background: rgba(0, 0, 0, 0.62); backdrop-filter: blur(4px); }
.modal[open] { display: flex; flex-direction: column; gap: 10px; }
.modal img { width: 210px; height: auto; margin: 0 auto 8px; }
.modal h2 { margin: 0; font-size: 1.15rem; }
.modal p { margin: 0 0 10px; color: var(--ink-muted); font-size: 0.88rem; line-height: 1.5; }

/* inside the website's popup: no way out of the demo except the popup's own X */
.embed .side-logo { pointer-events: none; }
.embed .hub-side-foot a, .embed .demo-pill { display: none; }
.embed .hl-center { padding-top: 40px; }

@media (max-width: 1320px) { .hl-cards { grid-template-columns: repeat(2, minmax(0, 300px)); } .hl-center { min-height: 0; } }
@media (max-width: 800px) {
  .hub { display: block; }
  .hub-side { position: static; width: auto; flex-direction: row; align-items: center; padding: 8px 16px; border-right: 0; border-bottom: 1px solid var(--glass-border); }
  .side-logo { margin: 0; }
  .side-logo img { width: 86px; }
  .hub-nav, .hub-side-foot { display: none; }
  .hub-main { margin-left: 0; }
  .topright { position: absolute; top: -48px; right: 16px; }
  .demo-pill { display: none; }
  .hl-center { padding: 30px 16px 24px; }
  .sb-main { padding: 18px 16px 40px; }
  .sb-head { flex-direction: column; padding-right: 0; }
}
@media (max-width: 600px) {
  .hl-cards, .sb-grid { grid-template-columns: minmax(0, 1fr); }
  .hl-logo { height: 120px; }
}
@media (prefers-reduced-motion: reduce) { .hl-card, .btn, .sb-card { transition: none; } }