:root{
  --bg:#0d1117; --bg2:#161b22; --card:#1c2230; --line:#2a3140;
  --text:#eef2f6; --muted:#9aa7b4; --accent:#7c5cff; --accent2:#4cc2ff; --good:#3fb950;
}
*{box-sizing:border-box}
html,body{margin:0;background:radial-gradient(1400px 700px at 50% -10%,#1a2030,#0d1117 55%);
  color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Arial,sans-serif;
  font-size:20px;line-height:1.4;-webkit-text-size-adjust:100%}
img{display:block}
button{font-family:inherit}
a{color:var(--accent2)}

/* top bar */
.topbar{position:sticky;top:0;z-index:20;display:flex;align-items:center;gap:14px;
  padding:14px 20px;background:rgba(13,17,23,.92);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.back{display:inline-flex;align-items:center;gap:8px;min-height:52px;padding:10px 18px;border-radius:12px;
  border:1px solid var(--line);background:var(--card);color:var(--text);font-size:19px;font-weight:700;cursor:pointer}
.back:active{transform:translateY(1px)}
.brand{font-weight:800;font-size:22px;letter-spacing:.3px;
  background:linear-gradient(90deg,var(--accent),var(--accent2));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.spacer{flex:1}
.mymusic{min-height:52px;padding:12px 22px;border-radius:14px;border:0;cursor:pointer;font-size:20px;font-weight:800;
  color:#fff;background:linear-gradient(135deg,var(--accent),var(--accent2));text-decoration:none;display:inline-flex;align-items:center;gap:8px}

.wrap{max-width:1100px;margin:0 auto;padding:22px 20px 80px}
h1{font-size:34px;font-weight:800;margin:6px 0 4px}
h2{font-size:24px;font-weight:800;margin:30px 0 14px}
.lead{color:var(--muted);font-size:20px;margin:0 0 22px}

/* tiles & grids */
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:18px}
.row-scroll{display:grid;grid-auto-flow:column;grid-auto-columns:200px;gap:18px;overflow-x:auto;
  padding-bottom:10px;scroll-snap-type:x proximity}
.row-scroll .tile{scroll-snap-align:start}
.tile{background:var(--card);border:1px solid var(--line);border-radius:18px;overflow:hidden;cursor:pointer;
  text-align:center;transition:transform .1s,border-color .1s}
.tile:active{transform:translateY(2px)}
.tile.sel{border-color:var(--good);box-shadow:0 0 0 3px rgba(63,185,80,.35)}
.tile .ph{aspect-ratio:1/1;width:100%;object-fit:cover;background:#0d1117}
.tile .ph.placeholder{display:flex;align-items:center;justify-content:center;font-size:54px;color:#37414f}
.tile .nm{padding:12px 10px;font-size:19px;font-weight:700;line-height:1.25}
.tile .sub{padding:0 10px 12px;color:var(--muted);font-size:15px;margin-top:-4px}
.tile.sel .check{position:absolute}

/* big square decade/style tiles */
.bigtiles{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:20px}
.bigtile{position:relative;min-height:150px;border-radius:20px;border:2px solid var(--line);cursor:pointer;
  display:flex;align-items:center;justify-content:center;text-align:center;font-size:30px;font-weight:800;
  background:linear-gradient(135deg,#1c2230,#222b3a);padding:18px}
.bigtile:active{transform:translateY(2px)}
.bigtile.sel{border-color:var(--good);background:linear-gradient(135deg,#1d2a22,#22372a)}
.bigtile .tick{position:absolute;top:10px;right:14px;font-size:26px;color:var(--good);display:none}
.bigtile.sel .tick{display:block}
.bigtile small{display:block;font-size:16px;color:var(--muted);font-weight:600;margin-top:6px}

/* artist page */
.artisthero{display:flex;gap:24px;align-items:center;margin:8px 0 10px;flex-wrap:wrap}
.artisthero img{width:200px;height:200px;border-radius:18px;object-fit:cover;background:#0d1117}
.song{display:flex;align-items:center;gap:16px;background:var(--card);border:1px solid var(--line);
  border-radius:16px;padding:14px 16px;margin-bottom:12px}
.song .info{flex:1;min-width:0}
.song .t{font-size:21px;font-weight:700}
.song .a{color:var(--muted);font-size:16px}
.getbtn{min-height:54px;padding:12px 24px;border:0;border-radius:14px;cursor:pointer;font-size:19px;font-weight:800;
  color:#fff;background:linear-gradient(135deg,var(--accent),var(--accent2));flex:0 0 auto}
.getbtn.alt{background:var(--card2,#1c2230);border:1px solid var(--line)}
.getbtn.done{background:#16241a;border:1px solid var(--good);color:var(--good);cursor:default}
.getbtn:active{transform:translateY(1px)}
.getbtn.discog{display:block;width:100%;margin:16px 0 10px;padding:22px;font-size:24px;line-height:1.2}
.getbtn.discog small{display:block;font-size:16px;font-weight:600;opacity:.92;margin-top:5px}
.albumcard{background:var(--card);border:1px solid var(--line);border-radius:18px;overflow:hidden;text-align:center}
.albumcard img{aspect-ratio:1/1;width:100%;object-fit:cover}
.albumcard .nm{padding:12px 10px 4px;font-size:18px;font-weight:700}
.albumcard .yr{color:var(--muted);font-size:15px;padding-bottom:10px}
.albumcard .getbtn{margin:0 12px 14px;min-height:50px;width:calc(100% - 24px)}

/* primary actions / footer of survey */
.actions{display:flex;gap:16px;justify-content:center;margin:34px 0 10px;flex-wrap:wrap}
.primary{min-height:64px;padding:18px 40px;border:0;border-radius:16px;cursor:pointer;font-size:24px;font-weight:800;
  color:#fff;background:linear-gradient(135deg,var(--accent),var(--accent2));box-shadow:0 10px 30px rgba(0,0,0,.4)}
.primary[disabled]{opacity:.45;cursor:default;box-shadow:none}
.ghost{min-height:64px;padding:18px 32px;border:1px solid var(--line);border-radius:16px;cursor:pointer;
  font-size:21px;font-weight:700;color:var(--text);background:var(--card)}
.primary:active,.ghost:active{transform:translateY(2px)}

/* progress dots */
.steps{display:flex;gap:10px;justify-content:center;margin:6px 0 22px}
.steps .dot{width:14px;height:14px;border-radius:50%;background:#2a3140}
.steps .dot.on{background:linear-gradient(135deg,var(--accent),var(--accent2))}

/* toast */
.toast{position:fixed;left:50%;bottom:28px;transform:translateX(-50%);z-index:50;
  background:#16241a;border:1px solid var(--good);color:#d7f7df;border-radius:16px;
  padding:18px 26px;font-size:21px;font-weight:700;box-shadow:0 12px 34px rgba(0,0,0,.5);max-width:90vw;text-align:center;
  opacity:0;pointer-events:none;transition:opacity .2s,transform .2s}
.toast.show{opacity:1;transform:translateX(-50%) translateY(-6px)}

/* loading + center */
.center{text-align:center;padding:60px 20px;color:var(--muted);font-size:22px}
.spin{display:inline-block;width:34px;height:34px;border:4px solid #2a3140;border-top-color:var(--accent2);
  border-radius:50%;animation:sp 1s linear infinite;vertical-align:middle;margin-right:12px}
@keyframes sp{to{transform:rotate(360deg)}}
.hidden{display:none!important}

@media(max-width:560px){
  body{font-size:19px}
  .artisthero img{width:140px;height:140px}
  h1{font-size:28px}
}