/* ربط — نمونه صداها | player, built on the rabt-agency design system
 * (Peyda, the cosmos sky, frosted .rabt-card glass, the signature blur button). */

@font-face{font-family:Peyda;font-style:normal;font-weight:400;font-display:swap;src:url("fonts/Peyda-Regular.woff2") format("woff2")}
@font-face{font-family:Peyda;font-style:normal;font-weight:700;font-display:swap;src:url("fonts/Peyda-Bold.woff2") format("woff2")}
@font-face{font-family:Peyda;font-style:normal;font-weight:900;font-display:swap;src:url("fonts/Peyda-Black.woff2") format("woff2")}

:root{
  --base:#0A1328;
  --accent:#225CFF;
  --halo:#8AB2FB;
  --bone:#F6F2EA;
  --bone-2:#C9D3E6;
  --bone-dim:rgba(246,242,234,.58);
  --bone-faint:rgba(246,242,234,.38);
  --card:rgba(16,30,59,.42);
  --card-hover:rgba(20,38,74,.58);
  --card-border:rgba(34,52,87,1);
  --halo-border:rgba(138,178,251,.42);
  --font:Peyda,Tahoma,Arial,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font);
  color:var(--bone);
  background:var(--base);
  min-height:100vh;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}

/* Cosmos canvas (injected by cosmos.js), pinned behind everything. */
.rabt-cosmos{position:fixed;inset:0;width:100vw;height:100vh;z-index:-1;display:block}

.rabt-shell{
  width:100%;max-width:680px;margin:0 auto;
  padding:clamp(56px,12vh,120px) 20px 96px;
  position:relative;z-index:1;
}

/* ---------- Hero ---------- */
.rabt-hero{text-align:center;margin-bottom:clamp(40px,7vh,68px)}
.rabt-kicker{
  display:inline-block;
  font-size:.78rem;font-weight:600;letter-spacing:2px;
  color:var(--halo);text-transform:none;
  margin-bottom:1.1rem;
}
.rabt-kicker::before,.rabt-kicker::after{
  content:"";display:inline-block;width:26px;height:1px;
  background:linear-gradient(90deg,transparent,var(--halo-border));
  vertical-align:middle;margin:0 12px;opacity:.9;
}
.rabt-kicker::after{background:linear-gradient(90deg,var(--halo-border),transparent)}
.rabt-hero h1{
  font-size:clamp(2.4rem,6.6vw,3.6rem);font-weight:900;
  line-height:1.25;color:#fff;letter-spacing:-.01em;
}
.rabt-hero p{
  margin:1.15rem auto 0;max-width:44ch;
  font-size:1.08rem;line-height:2;color:var(--bone-2);font-weight:400;
}

/* ---------- Playlist ---------- */
.rabt-list{display:flex;flex-direction:column;gap:14px}

.rabt-track{
  position:relative;overflow:hidden;
  display:grid;
  grid-template-columns:auto 1fr auto;
  align-items:center;column-gap:16px;
  padding:16px;border-radius:16px;
  background:var(--card);
  border:.8px solid var(--card-border);
  -webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);
  cursor:pointer;
  transition:border-color .35s ease,background .35s ease,transform .5s cubic-bezier(.16,1,.3,1),box-shadow .45s ease;
  -webkit-tap-highlight-color:transparent;
}
.rabt-track:hover{background:var(--card-hover);border-color:var(--halo-border)}
.rabt-track.active{
  border-color:rgba(138,178,251,.55);
  background:var(--card-hover);
  box-shadow:0 0 0 1px rgba(34,92,255,.28),0 18px 48px -24px rgba(34,92,255,.55);
}
/* accent seam that lights on the active card */
.rabt-track::before{
  content:"";position:absolute;inset-inline-start:0;top:14px;bottom:14px;width:2px;
  border-radius:2px;background:linear-gradient(180deg,var(--accent),var(--halo));
  opacity:0;transform:scaleY(.4);transform-origin:center;
  transition:opacity .4s ease,transform .5s cubic-bezier(.16,1,.3,1);
}
.rabt-track.active::before{opacity:1;transform:scaleY(1)}

/* cover */
.rabt-cover{
  grid-row:1;width:58px;height:58px;border-radius:13px;
  display:grid;place-items:center;overflow:hidden;position:relative;
  background:radial-gradient(120% 120% at 30% 20%,rgba(34,92,255,.20),rgba(10,19,40,.6));
  border:.8px solid rgba(138,178,251,.28);
  color:var(--bone);font-size:1.35rem;font-weight:700;line-height:1;
  transition:border-color .35s ease,box-shadow .35s ease;
}
.rabt-cover img{width:100%;height:100%;object-fit:cover;display:block}
.rabt-cover svg{width:26px;height:26px;opacity:.7}
.rabt-track:hover .rabt-cover{border-color:rgba(138,178,251,.5)}
.rabt-track.active .rabt-cover{border-color:var(--accent);box-shadow:0 0 0 3px rgba(34,92,255,.18)}

/* meta */
.rabt-meta{grid-row:1;min-width:0}
.rabt-idx{font-size:.72rem;letter-spacing:1px;color:var(--halo);opacity:.85;font-weight:600;font-variant-numeric:tabular-nums}
.rabt-title{font-size:1.06rem;font-weight:700;color:var(--bone);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;margin-top:1px}
.rabt-sub{font-size:.82rem;color:var(--bone-dim);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;margin-top:2px}

/* right cluster: equalizer + play */
.rabt-ctrl{grid-row:1;display:flex;align-items:center;gap:12px}
.rabt-eq{display:none;gap:3px;align-items:flex-end;height:18px}
.rabt-track.playing .rabt-eq{display:flex}
.rabt-eq span{width:3px;border-radius:3px;background:var(--halo);animation:rabt-eq 1.05s ease-in-out infinite}
.rabt-eq span:nth-child(1){animation-delay:-.80s}
.rabt-eq span:nth-child(2){animation-delay:-.45s}
.rabt-eq span:nth-child(3){animation-delay:-.15s}
.rabt-eq span:nth-child(4){animation-delay:-.60s}
@keyframes rabt-eq{0%,100%{height:4px}50%{height:18px}}

.rabt-play{
  width:46px;height:46px;border-radius:50%;flex:0 0 auto;
  display:grid;place-items:center;cursor:pointer;color:#fff;
  background:rgba(34,92,255,.16);
  border:.8px solid rgba(138,178,251,.7);
  -webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);
  transition:background .3s ease,border-color .3s ease,transform .18s cubic-bezier(.16,1,.3,1),box-shadow .3s ease;
}
.rabt-track:hover .rabt-play{background:rgba(34,92,255,.28)}
.rabt-track.active .rabt-play{background:var(--accent);border-color:var(--accent);box-shadow:0 8px 24px -8px rgba(34,92,255,.8)}
.rabt-play:active{transform:scale(.92)}
.rabt-play svg{width:18px;height:18px}
.rabt-play .ico-pause{display:none}
.rabt-track.playing .rabt-play .ico-play{display:none}
.rabt-track.playing .rabt-play .ico-pause{display:block}

/* progress row — only rendered/opened on the active card */
.rabt-prog{
  grid-column:1/-1;grid-row:2;
  display:grid;grid-template-rows:0fr;
  opacity:0;transition:grid-template-rows .5s cubic-bezier(.16,1,.3,1),opacity .4s ease;
}
.rabt-track.active .rabt-prog{grid-template-rows:1fr;opacity:1;margin-top:14px}
.rabt-prog-inner{overflow:hidden;display:flex;align-items:center;gap:12px}
.rabt-time{font-size:.72rem;color:var(--bone-faint);font-variant-numeric:tabular-nums;flex:0 0 auto;min-width:36px;text-align:center}
.rabt-bar-wrap{flex:1 1 auto;padding:6px 0;cursor:pointer}
.rabt-bar{height:5px;border-radius:6px;background:rgba(246,242,234,.12);position:relative}
.rabt-bar .fill{position:absolute;top:0;bottom:0;right:0;width:0;border-radius:6px;background:linear-gradient(90deg,var(--halo),var(--accent))}
.rabt-bar .knob{position:absolute;top:50%;right:0;width:12px;height:12px;border-radius:50%;background:var(--bone);transform:translate(50%,-50%);box-shadow:0 1px 6px rgba(0,0,0,.5);opacity:0;transition:opacity .18s ease}
.rabt-track.active .rabt-bar-wrap:hover .knob,.rabt-bar.drag .knob{opacity:1}

/* ---------- reveal on scroll ---------- */
.rabt-reveal{opacity:0;transform:translateY(22px);transition:opacity .7s cubic-bezier(.16,1,.3,1),transform .7s cubic-bezier(.16,1,.3,1)}
.rabt-reveal.is-in{opacity:1;transform:none}

/* ---------- footer ---------- */
.rabt-foot{margin-top:44px;text-align:center;font-size:.8rem;color:var(--bone-faint);letter-spacing:.2px}
.rabt-foot a{color:var(--bone-dim);text-decoration:none;transition:color .25s ease}
.rabt-foot a:hover{color:var(--halo)}

.rabt-empty{margin-top:48px;text-align:center;color:var(--bone-dim);font-size:1rem;line-height:2.2}

@media (prefers-reduced-motion:reduce){
  .rabt-reveal{opacity:1;transform:none;transition:none}
  .rabt-eq span{animation:none}
  html{scroll-behavior:auto}
}
@media (max-width:440px){
  .rabt-track{padding:14px;column-gap:13px}
  .rabt-cover{width:52px;height:52px}
  .rabt-title{font-size:1rem}
  .rabt-play{width:44px;height:44px}
}