:root{
  --bg:#0b0e13; --panel:#141a22; --panel2:#1a222e; --line:#26303e;
  --text:#f2f5f9; --sub:#9aa7b4; --gold:#d8a723; --focus:#2456a6;
  --row-h:64px;
}
*{box-sizing:border-box; -webkit-tap-highlight-color:transparent}
html,body{height:100%}
body{
  margin:0; background:var(--bg); color:var(--text);
  font-family:system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  display:flex; flex-direction:column; overflow:hidden;
  touch-action:manipulation;
}
button{font-family:inherit}
.hidden{display:none !important}
.spacer{flex:1}

/* ---------- top bar ---------- */
#topbar{
  display:flex; align-items:center; gap:10px;
  padding:10px 14px; background:var(--panel); border-bottom:1px solid var(--line);
  padding-top:calc(10px + env(safe-area-inset-top));
}
.logo{font-size:22px; font-weight:800; letter-spacing:.3px; white-space:nowrap}
.logo span{color:var(--gold)}
#playlistSelect{
  background:var(--panel2); color:var(--text); border:1px solid var(--line);
  border-radius:8px; padding:9px 10px; font-size:15px; max-width:34vw;
}
#search{
  background:var(--panel2); color:var(--text); border:1px solid var(--line);
  border-radius:8px; padding:9px 12px; font-size:15px; width:210px; outline:none;
}
#search:focus{border-color:var(--focus)}
#clock{font-weight:700; font-size:15px; white-space:nowrap; color:var(--sub)}
.btn{
  background:var(--panel2); color:var(--text); border:1px solid var(--line);
  border-radius:8px; padding:9px 14px; font-size:15px; cursor:pointer; min-height:42px;
}
.btn:active,.btn:focus-visible{background:var(--focus); outline:none}
.btn.primary{background:var(--focus); border-color:var(--focus); font-weight:700}
.btn.ghost{background:transparent}
.btn.danger{background:#5a1f1f; border-color:#7a2b2b}
.btn.small{min-height:38px; padding:6px 12px; font-size:14px}
.icon-btn{
  background:transparent; border:none; color:var(--text); font-size:20px;
  min-width:44px; min-height:44px; border-radius:8px; cursor:pointer;
}
.icon-btn:active{background:var(--panel2)}
#menuBtn{display:none}

/* ---------- layout ---------- */
#layout{flex:1; display:grid; grid-template-columns:236px 1fr 432px; min-height:0}
#groups{
  background:var(--panel); overflow-y:auto; padding:8px; border-right:1px solid var(--line);
}
.group{
  display:flex; justify-content:space-between; align-items:center; gap:8px;
  width:100%; text-align:left; background:transparent; border:none; color:var(--text);
  padding:12px 12px; border-radius:8px; font-size:15px; cursor:pointer; min-height:48px;
}
.group small{color:var(--sub); font-size:12px}
.group.active{background:var(--focus)}
.group:active{background:var(--panel2)}

#channelPane{display:flex; flex-direction:column; min-width:0; background:var(--bg)}
#statusBar{padding:8px 14px; color:var(--sub); font-size:13px; min-height:18px}
#channels{overflow-y:auto; flex:1; padding:2px 8px 16px}
#emptyState{padding:40px 24px; text-align:center; color:var(--sub)}
#emptyState h2{color:var(--text)}

.channel{
  display:flex; align-items:center; gap:12px; width:100%;
  min-height:var(--row-h); padding:8px 10px; margin-bottom:4px;
  background:var(--panel); border:1px solid transparent; border-radius:10px;
  color:var(--text); text-align:left; cursor:pointer;
}
.channel:focus-visible{outline:2px solid var(--focus); outline-offset:-2px}
.channel.playing{border-color:var(--gold)}
.channel .logo{
  width:62px; height:36px; object-fit:contain; flex:none; border-radius:4px; background:#000;
}
.channel .meta{flex:1; min-width:0}
.channel .name{font-size:16px; white-space:nowrap; overflow:hidden; text-overflow:ellipsis}
.channel .name .num{color:var(--sub); margin-right:6px}
.channel .sub{font-size:12.5px; color:var(--sub); white-space:nowrap; overflow:hidden; text-overflow:ellipsis; margin-top:2px}
.channel .star{
  flex:none; font-size:24px; line-height:1; color:#54626f; background:none; border:none;
  min-width:48px; min-height:48px; cursor:pointer; border-radius:8px;
}
.channel .star.on{color:var(--gold)}

/* ---------- side / player ---------- */
#side{display:flex; flex-direction:column; min-width:0; border-left:1px solid var(--line); background:var(--panel)}
#playerWrap{position:relative; background:#000; aspect-ratio:16/9; flex:none}
#video{width:100%; height:100%; display:block; background:#000}
#playerMsg{
  position:absolute; inset:auto 10px 52px 10px; background:rgba(0,0,0,.82);
  padding:10px 12px; border-radius:8px; font-size:14px; text-align:center;
}
#playerBar{
  position:absolute; left:0; right:0; bottom:0; display:flex; align-items:center; gap:2px;
  padding:4px 8px calc(4px + env(safe-area-inset-bottom));
  background:linear-gradient(transparent, rgba(0,0,0,.85));
}
#nowPlaying{flex:1; font-size:13.5px; white-space:nowrap; overflow:hidden; text-overflow:ellipsis; padding:0 6px}
#info{padding:14px 16px; overflow-y:auto}
#infoName{font-size:20px; font-weight:700}
#infoNow{color:var(--gold); font-size:15px; margin-top:8px}
#progTrack{height:4px; background:var(--line); border-radius:2px; margin-top:7px; overflow:hidden}
#progFill{height:100%; width:0; background:var(--gold)}
#infoNext{color:var(--sub); font-size:14px; margin-top:8px}
#infoDesc{color:var(--sub); font-size:13.5px; margin-top:8px; line-height:1.45}
.hint{color:#5c6b7a; font-size:12px; margin-top:14px}
.mobile-only{display:none}

/* ---------- modal / toast ---------- */
#backdrop{position:fixed; inset:0; background:rgba(0,0,0,.6); z-index:40}
#modal{position:fixed; inset:0; z-index:50; display:flex; align-items:center; justify-content:center; padding:16px}
.modal-card{
  background:var(--panel); border:1px solid var(--line); border-radius:14px;
  width:min(520px, 100%); max-height:92vh; overflow-y:auto; padding:20px;
}
.modal-card h2{margin:0 0 14px; font-size:20px}
.fld{display:block; margin-bottom:12px}
.fld span{display:block; font-size:12.5px; font-weight:700; color:var(--sub); margin-bottom:5px; text-transform:uppercase; letter-spacing:.4px}
.fld input,.fld select{
  width:100%; background:var(--panel2); color:var(--text); border:1px solid var(--line);
  border-radius:8px; padding:12px; font-size:16px; outline:none;
}
.fld input:focus,.fld select:focus{border-color:var(--focus)}
.modal-actions{display:flex; gap:10px; align-items:center; margin-top:16px}
#fError{color:#ff8a80; font-size:14px; margin-top:10px; min-height:18px}
#toast{
  position:fixed; left:50%; bottom:calc(22px + env(safe-area-inset-bottom)); transform:translateX(-50%);
  background:#222d3b; border:1px solid var(--line); color:var(--text);
  padding:11px 18px; border-radius:10px; font-size:14.5px; z-index:60; max-width:92vw; text-align:center;
}

/* ---------- mobile / touch ---------- */
@media (max-width:1023px){
  body{height:100dvh}
  /* top bar wraps: row 1 = logo / playlist / add / edit, row 2 = search full width */
  #topbar{flex-wrap:wrap; gap:8px; padding:8px 10px}
  #menuBtn{display:none}
  #clock{display:none}
  .logo{font-size:19px}
  #playlistSelect{flex:1; max-width:none; min-height:44px; font-size:16px}
  .btn.small{min-height:44px; padding:8px 14px; font-size:15px}
  #search{order:10; flex:1 1 100%; width:auto; min-height:44px; font-size:16px}
  /* single column: player, group chips, channels */
  #layout{display:flex; flex-direction:column}
  #side{order:1; border-left:none; border-bottom:1px solid var(--line)}
  #groups{
    order:2; position:static; transform:none; box-shadow:none; z-index:auto;
    display:flex; flex-direction:row; gap:8px; overflow-x:auto; overflow-y:hidden;
    padding:8px 10px; border-right:none; border-bottom:1px solid var(--line);
    background:var(--panel); scrollbar-width:none; flex:none;
  }
  #groups::-webkit-scrollbar{display:none}
  .group{width:auto; flex:none; white-space:nowrap; min-height:44px; padding:10px 14px; border-radius:999px; background:var(--panel2)}
  .group.active{background:var(--focus)}
  .group small{margin-left:6px}
  #channelPane{order:3; flex:1; min-height:0}
  #channels{padding:6px 8px calc(16px + env(safe-area-inset-bottom))}
  /* compact info under the player */
  #info{padding:8px 14px 10px; max-height:none; overflow:visible}
  #infoName{font-size:17px}
  #infoDesc,.hint{display:none}
  /* bigger touch targets everywhere */
  .channel{--row-h:72px; padding:10px}
  .channel .name{font-size:16.5px}
  .channel .star{min-width:52px; min-height:52px; font-size:26px}
  .icon-btn{min-width:48px; min-height:48px; font-size:22px}
  .fld input,.fld select{font-size:16px; min-height:48px}
  .btn{min-height:48px}
}
@media (max-width:1023px) and (orientation:landscape){
  #playerWrap{max-height:56vh}
  #info{display:none}
}