/* Hardware look borrowed from a cream (light) and charcoal-and-walnut (dark) desktop CD player.
   The deck/disc and the green LCD are fixed "screen" parts and look the same in both themes. */
:root{
  --sans:ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --mono:ui-monospace,"SF Mono",Menlo,Consolas,monospace;
  --a1:140,160,190; --a2:190,140,140; --a3:210,190,140; /* sampled from the current cover */
  --accent:#e2703a;       /* the player's orange key */
  --led-green:#79f2a6; --led-amber:#ffb24a; --led-red:#ff6248;
  color-scheme:light;     /* form controls and scrollbars follow the theme */
  --s-muted:#8fa3b0;      /* text inside the dark deck */

  /* light: cream body */
  --bg:#efece5; --fg:#24211d; --muted:#7a7268; --line:rgba(36,33,29,.12);
  --body:#ebe7de; --body-hi:#f7f4ee; --body-lo:#d6d0c4; --seam:rgba(36,33,29,.13); --print:#8a8175; --strip-print:#8a8175;
  --strip:linear-gradient(180deg,#efebe3,#e2ddd2);
  --slot:#1f1d1b; --slot-hi:#3a3733; --knob:#2b2926; --knob-hi:#4a4642;
  --key:#f6f3ed; --key-fg:#2a2622; --key-line:rgba(36,33,29,.16);
  --cap:#2b2927; --cap-hi:#3e3b37; --cap-lo:#1a1917; --cap-ink:#ece6da;
  --well:rgba(60,48,36,.17); --well-hi:rgba(255,255,255,.75);
  --tape:#f3eddf; --tape-ink:#2a2620; --tape-dim:#6b6255;
  --groove:#d3cdc1; --shadow:rgba(60,48,36,.22);
  --wood:repeating-linear-gradient(92deg,rgba(90,52,22,.10) 0 1px,transparent 1px 6px,rgba(255,235,205,.08) 6px 7px,transparent 7px 13px),
         linear-gradient(180deg,#b9875a,#a2724a);
  --rack-back:linear-gradient(180deg,#5a3c25,#4a311e);
}
@media (prefers-color-scheme: dark){ :root:not([data-theme="light"]){
  color-scheme:dark;
  --bg:#13100d; --fg:#ece5da; --muted:#9b9083; --line:rgba(236,229,218,.12);
  --body:#2a2826; --body-hi:#353330; --body-lo:#1c1b19; --seam:rgba(0,0,0,.45); --print:#8c847a; --strip-print:rgba(255,236,214,.62);
  --strip:linear-gradient(90deg,rgba(0,0,0,.18),transparent 30%,rgba(255,255,255,.05) 60%,rgba(0,0,0,.2)),
          repeating-linear-gradient(176deg,rgba(40,18,6,.22) 0 1px,transparent 1px 5px,rgba(255,220,180,.05) 5px 6px,transparent 6px 11px),
          linear-gradient(180deg,#8a5634,#6d3f22 55%,#5e341b);
  --slot:#121110; --slot-hi:#2c2a27; --knob:#151413; --knob-hi:#33302c;
  --key:#33312e; --key-fg:#ece5da; --key-line:rgba(0,0,0,.45);
  --cap:#262422; --cap-hi:#3a3733; --cap-lo:#141312; --cap-ink:#e6dfd3;
  --well:rgba(0,0,0,.45); --well-hi:rgba(255,255,255,.07);
  --tape:#d9d1c0; --tape-ink:#24201b; --tape-dim:#5c5448;
  --groove:#1a1917; --shadow:rgba(0,0,0,.55);
  --wood:repeating-linear-gradient(92deg,rgba(40,18,6,.22) 0 1px,transparent 1px 6px,rgba(255,220,180,.05) 6px 7px,transparent 7px 13px),
         linear-gradient(180deg,#7c4b2c,#5e341b);
  --rack-back:linear-gradient(180deg,#2c1a0f,#22140b);
}}
:root[data-theme="dark"]{
  color-scheme:dark;
  --bg:#13100d; --fg:#ece5da; --muted:#9b9083; --line:rgba(236,229,218,.12);
  --body:#2a2826; --body-hi:#353330; --body-lo:#1c1b19; --seam:rgba(0,0,0,.45); --print:#8c847a; --strip-print:rgba(255,236,214,.62);
  --strip:linear-gradient(90deg,rgba(0,0,0,.18),transparent 30%,rgba(255,255,255,.05) 60%,rgba(0,0,0,.2)),
          repeating-linear-gradient(176deg,rgba(40,18,6,.22) 0 1px,transparent 1px 5px,rgba(255,220,180,.05) 5px 6px,transparent 6px 11px),
          linear-gradient(180deg,#8a5634,#6d3f22 55%,#5e341b);
  --slot:#121110; --slot-hi:#2c2a27; --knob:#151413; --knob-hi:#33302c;
  --key:#33312e; --key-fg:#ece5da; --key-line:rgba(0,0,0,.45);
  --cap:#262422; --cap-hi:#3a3733; --cap-lo:#141312; --cap-ink:#e6dfd3;
  --well:rgba(0,0,0,.45); --well-hi:rgba(255,255,255,.07);
  --tape:#d9d1c0; --tape-ink:#24201b; --tape-dim:#5c5448;
  --groove:#1a1917; --shadow:rgba(0,0,0,.55);
  --wood:repeating-linear-gradient(92deg,rgba(40,18,6,.22) 0 1px,transparent 1px 6px,rgba(255,220,180,.05) 6px 7px,transparent 7px 13px),
         linear-gradient(180deg,#7c4b2c,#5e341b);
  --rack-back:linear-gradient(180deg,#2c1a0f,#22140b);
}
*{box-sizing:border-box}
html,body{margin:0}
/* the tabletop is the page itself, lit faintly by the current cover */
body{min-height:100vh;background:radial-gradient(60% 55% at 62% 30%,rgba(var(--a1),.14),transparent 70%) fixed,var(--bg);color:var(--fg);font-family:var(--sans);-webkit-font-smoothing:antialiased;line-height:1.5}
main{max-width:1040px;margin:0 auto;padding:clamp(16px,4vw,40px) clamp(16px,4vw,32px) 40px}
.sr-only{position:absolute;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}

/* ---- stage: the rack and the player, straight on the tabletop ---- */
.frame{position:relative}
.scene{display:grid;grid-template-columns:232px minmax(0,1fr);gap:clamp(20px,4vw,44px);padding:clamp(8px,2vw,20px) 0}
.stage-col{display:flex;flex-direction:column;align-items:center;gap:28px;min-width:0}

/* ---- rack: a wooden stand of jewel cases, spines out ---- */
.rack-col{position:relative;min-height:320px}
.rack-inner{position:absolute;inset:0;display:flex;flex-direction:column;gap:10px}
.rack-tools{display:flex;gap:14px;align-items:center;padding:5px 5px 2px}
/* the search field is a mixer's scribble strip: a band of label tape set into a well */
.rack-tools input{flex:1;min-width:0;font-family:var(--mono);font-size:.7rem;letter-spacing:.06em;padding:8px 10px;border:0;border-radius:2px;
  color:var(--tape-ink);
  background:linear-gradient(180deg,rgba(255,255,255,.38),transparent 45%,rgba(0,0,0,.04)),
    repeating-linear-gradient(90deg,rgba(80,60,30,.025) 0 1px,transparent 1px 4px),var(--tape);
  box-shadow:0 0 0 1px rgba(0,0,0,.3),0 0 0 5px var(--well),0 1px 0 5px var(--well-hi),inset 0 1px 2px rgba(0,0,0,.2)}
.rack-tools input::placeholder{color:var(--tape-dim);opacity:1} /* ≥4.5:1 on the tape in both themes */
.rack-tools input:focus-visible{outline:2px solid var(--accent);outline-offset:7px}
.rack-add{display:inline-grid;place-items:center;width:34px;height:32px;padding:0;font-size:1.15rem;font-weight:400;letter-spacing:0}
.rack-add::before{display:none}
/* remembered albums whose folder isn't connected yet: the bar asks for it, their spines sit dimmed */
.reconnect{display:flex;gap:14px;padding:5px 5px 2px}
.reconnect[hidden]{display:none}
.reconnect .pbtn{white-space:nowrap}
.reconnect .accent{flex:1;text-align:center}
.rack-row.offline .spine{ /* mixed toward the rack's wood, not filter(): a filter gives each of hundreds of
  spines its own offscreen surface, which made the slot animation stutter in Firefox */
  background:color-mix(in srgb,rgb(var(--dom)) 55%,#2b1a0e);color:color-mix(in srgb,rgb(var(--ink)) 62%,#2b1a0e)}
/* import progress: a small plaque above the rack while albums stream onto the shelf */
.shelving{display:grid;gap:6px;padding:8px 10px 9px;border-radius:5px;background:var(--key);color:var(--key-fg);
  box-shadow:0 1px 0 var(--key-line),0 2px 4px var(--shadow),inset 0 1px 0 rgba(255,255,255,.12);transition:opacity .45s}
.shelving[hidden]{display:none}
.shelving.fade{opacity:0}
.shelving-text{display:flex;justify-content:space-between;align-items:baseline;gap:8px;font-family:var(--mono);min-width:0}
.shelving-main{font-size:.62rem;font-weight:650;letter-spacing:.1em;text-transform:uppercase;white-space:nowrap}
.shelving-sub{font-size:.58rem;letter-spacing:.03em;color:var(--print);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;min-width:0}
.shelving-meter{position:relative;height:4px;border-radius:2px;background:var(--groove);overflow:hidden;box-shadow:inset 0 1px 1px rgba(0,0,0,.25)}
.shelving-meter i{position:absolute;top:0;bottom:0;left:0;width:0;border-radius:2px;background:var(--accent);transition:width .3s ease}
.shelving.indeterminate .shelving-meter i{width:32%!important;animation:meterSweep 1.15s ease-in-out infinite}
@keyframes meterSweep{from{transform:translateX(-100%)}to{transform:translateX(320%)}}
/* a faint sheen travels over the slots while cases are still arriving */
.rack.loading::after{content:"";position:absolute;inset:10px 12px 13px 12px;pointer-events:none;border-radius:2px;
  background:linear-gradient(100deg,transparent 38%,rgba(255,236,214,.07) 50%,transparent 62%) 0 0/300% 100%;
  animation:shelfSheen 1.9s linear infinite}
@keyframes shelfSheen{from{background-position:100% 0}to{background-position:0 0}}
@media (prefers-reduced-motion:reduce){ .rack.loading::after,.shelving.indeterminate .shelving-meter i{animation:none} #reconnectBtn::before{animation:none} }
.rack{flex:1;min-height:0;position:relative;display:flex;flex-direction:column;border-radius:4px;background:var(--wood);
  padding:10px 12px 13px 12px; /* top board, base, side panels */
  box-shadow:0 20px 30px -14px var(--shadow),0 3px 8px var(--shadow),inset 0 1px 0 rgba(255,255,255,.14),inset 0 -2px 0 rgba(0,0,0,.25)}
.rack-slots{flex:1;min-height:0;overflow-y:auto;overflow-x:hidden;display:flex;flex-direction:column;gap:3px;padding:5px 0;
  /* a groove under every slot (rows are 26px + 3px gap), scrolling with the cases */
  background:linear-gradient(180deg,transparent 0 27px,rgba(0,0,0,.4) 27px 28px,rgba(255,255,255,.07) 28px 29px) 0 5px/100% 29px repeat-y local,
    var(--rack-back) local;
  box-shadow:inset 5px 0 8px rgba(0,0,0,.4),inset -5px 0 8px rgba(0,0,0,.4),inset 0 5px 8px rgba(0,0,0,.35);scrollbar-width:thin}
.rack-empty{position:absolute;inset:0;display:grid;place-items:center;margin:0;font-family:var(--mono);font-size:.7rem;
  letter-spacing:.12em;text-transform:uppercase;color:rgba(255,240,225,.55);pointer-events:none}
.rack-row{all:unset;display:block;position:relative;flex:none;height:26px;cursor:pointer;
  background:linear-gradient(180deg,rgba(0,0,0,.4),rgba(0,0,0,.18) 30%,rgba(0,0,0,.18) 70%,rgba(255,255,255,.04))}
.rack-row[hidden]{display:none}
.rack-empty[hidden]{display:none}
.spine{position:absolute;inset:0 10px 0 0;display:flex;align-items:center;gap:7px;padding:0 10px 0 12px;border-radius:2px;
  background:rgb(var(--dom));color:rgb(var(--ink));transform:translateX(var(--nudge,0px));
  transition:transform .45s cubic-bezier(.22,.9,.3,1),opacity .35s;box-shadow:0 1px 1px rgba(0,0,0,.45)}
.spine::before{content:"";position:absolute;inset:0;border-radius:2px;pointer-events:none;
  background:linear-gradient(180deg,rgba(255,255,255,.55) 0 1px,rgba(255,255,255,.18) 1px 4px,transparent 4px calc(100% - 4px),rgba(255,255,255,.14) calc(100% - 4px) calc(100% - 1px),rgba(255,255,255,.4) calc(100% - 1px));
  box-shadow:inset 3px 0 0 rgba(255,255,255,.18),inset 0 0 0 1px rgba(255,255,255,.12)}
.spine::after{content:"";position:absolute;inset:0;border-radius:2px;pointer-events:none;
  background:linear-gradient(180deg,rgba(255,255,255,.14),transparent 45%,rgba(0,0,0,.14))}
.sp-title{font-size:.64rem;font-weight:750;letter-spacing:.05em;text-transform:uppercase;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;flex:0 1 auto;max-width:62%}
.sp-artist{font-size:.6rem;opacity:.82;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;flex:1 1 0;min-width:0}
.sp-cat{font-family:var(--mono);font-size:.52rem;letter-spacing:.06em;opacity:.7;flex:none}
.rack-row:hover .spine{transform:translateX(calc(var(--nudge,0px) + 4px))}
.rack-row:focus-visible{outline:2px solid var(--accent);outline-offset:-2px}
.rack-row.out{cursor:default}
.rack-row.out .spine{transform:translateX(calc(100% + 16px));opacity:0}

/* ---- jewel case: tray with hinge, cover with the booklet on the front and liner notes inside ---- */
.case-col{display:flex;flex-direction:column;align-items:center;gap:16px;width:100%}
.case-area{--cw:200px;position:relative;width:calc(var(--cw) * 2 + 16px);max-width:100%;height:var(--cw)}
.case-stage{position:absolute;top:0;left:calc(50% - var(--cw) / 2);width:var(--cw);height:var(--cw);perspective:1600px;
  transition:left .8s cubic-bezier(.22,.9,.3,1),transform .35s cubic-bezier(.22,.9,.3,1),opacity .3s}
.case-area.open .case-stage{left:calc(50% + 8px)}
.case-area.away .case-stage{transform:translateX(-56px);opacity:0}
.case-area.empty .case-stage{transform:translateX(-56px);opacity:0}
.case{position:relative;width:100%;height:100%;transform-style:preserve-3d}

/* Shadows live on the parts (tray, inside of the cover) so they move with them in 3D.
   A filter on the 3D stage gets flattened and clipped (Firefox); a separate flat layer can't follow the swing. */
.tray{position:absolute;inset:0;border-radius:4px;overflow:hidden;background:#0c1013;
  box-shadow:0 16px 22px rgba(0,0,0,.34),0 3px 6px rgba(0,0,0,.18)}
.tray-card{position:absolute;top:0;bottom:0;left:7%;right:0;background-size:cover;background-position:center}
.tray-spine{position:absolute;left:0;top:0;bottom:0;width:7%;display:flex;align-items:center;justify-content:center;overflow:hidden;
  background:rgb(var(--dom));color:rgb(var(--ink));box-shadow:inset -1px 0 0 rgba(0,0,0,.35),inset 1px 0 0 rgba(255,255,255,.2)}
.tray-spine span{writing-mode:vertical-rl;transform:rotate(180deg);font-size:.46rem;font-weight:750;letter-spacing:.16em;text-transform:uppercase;white-space:nowrap}
.tray-hub{position:absolute;left:53.5%;top:50%;width:27%;height:27%;transform:translate(-50%,-50%);border-radius:50%;
  background:radial-gradient(circle,#0c1013 0 30%,transparent 31%),repeating-conic-gradient(rgba(235,242,246,.75) 0 4deg,rgba(235,242,246,.18) 4deg 12deg);
  box-shadow:0 0 0 3px rgba(255,255,255,.12),0 0 0 7px rgba(255,255,255,.05),0 0 14px rgba(0,0,0,.6)}
.case-cd-wrap{position:absolute;left:53.5%;top:50%;width:84%;height:84%;transform:translate(-50%,-50%);
  transition:opacity .35s ease,transform .5s cubic-bezier(.2,.9,.3,1)}
.case-cd-wrap.gone{opacity:0;transform:translate(-50%,-50%) scale(.85)}
.case-cd-wrap canvas{width:100%;height:100%;display:block}
.tray-plastic{position:absolute;inset:0;border-radius:4px;pointer-events:none;
  background:linear-gradient(125deg,rgba(255,255,255,.14),transparent 32%,transparent 70%,rgba(255,255,255,.07));
  box-shadow:inset 0 0 0 1px rgba(255,255,255,.22),inset 0 0 0 5px rgba(255,255,255,.04)}
.tray-plastic::before,.tray-plastic::after{content:"";position:absolute;right:6%;width:9%;height:4%;border-radius:2px;background:rgba(255,255,255,.18)}
.tray-plastic::before{top:5%} .tray-plastic::after{bottom:5%}

.case-front{position:absolute;inset:0;transform-origin:0 50%;transform-style:preserve-3d;transform:translateZ(2px);
  transition:transform .85s cubic-bezier(.22,.9,.3,1)}
.case.open .case-front{transform:translateZ(2px) rotateY(-180deg)}
.cover-face,.cover-back{position:absolute;inset:0;border-radius:4px;overflow:hidden;background:#11161a;
  backface-visibility:hidden;-webkit-backface-visibility:hidden}
.cover-back{transform:rotateY(180deg);box-shadow:0 16px 22px rgba(0,0,0,.34),0 3px 6px rgba(0,0,0,.18)} /* the front face sits on the tray, whose shadow already covers it */
.cover-face img{position:absolute;top:0;bottom:0;left:6%;width:94%;height:100%;object-fit:cover;display:block}
.cover-face::before,.cover-back::before{content:"";position:absolute;top:0;bottom:0;width:6%;
  background:linear-gradient(90deg,rgba(255,255,255,.13),rgba(255,255,255,.03))}
.cover-face::before{left:0;box-shadow:inset -1px 0 0 rgba(255,255,255,.25)}
.cover-back::before{right:0;box-shadow:inset 1px 0 0 rgba(255,255,255,.25)}
.cover-plastic{position:absolute;inset:0;border-radius:4px;pointer-events:none;
  background:linear-gradient(115deg,rgba(255,255,255,.24),rgba(255,255,255,.05) 26%,transparent 44%,rgba(255,255,255,.07) 68%,transparent 84%);
  box-shadow:inset 0 0 0 1px rgba(255,255,255,.24)}
.hinge{position:absolute;left:-3px;top:0;bottom:0;width:6px;border-radius:3px;pointer-events:none;transform:translateZ(3px);
  background:linear-gradient(180deg,rgba(235,242,246,.75) 0 7%,rgba(235,242,246,.2) 7% 93%,rgba(235,242,246,.75) 93%);
  box-shadow:0 0 0 1px rgba(0,0,0,.25)}

/* liner notes: printed on the inside of the cover */
.liner{position:absolute;top:0;bottom:0;left:0;right:6%;display:flex;flex-direction:column;padding:11px 10px 9px 12px;
  background:linear-gradient(180deg,rgba(255,255,255,.06),rgba(0,0,0,.14)),rgb(var(--dom));color:rgb(var(--ink))}
.liner-head{display:flex;flex-direction:column;gap:1px;padding-bottom:6px;margin-bottom:5px;border-bottom:1px solid rgba(var(--ink),.28)}
.liner-artist{font-family:var(--mono);font-size:.48rem;letter-spacing:.24em;text-transform:uppercase;opacity:.75;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.liner-title{font-size:.74rem;font-weight:750;letter-spacing:.06em;text-transform:uppercase;line-height:1.15;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.liner-tracks{list-style:none;margin:0;padding:0;flex:1;min-height:0;overflow-y:auto;scrollbar-width:none}
.liner-tracks::-webkit-scrollbar{display:none}
.liner-tracks button{all:unset;box-sizing:border-box;cursor:pointer;display:grid;grid-template-columns:1.5em minmax(0,1fr) auto;gap:5px;
  width:100%;padding:1.5px 4px;border-radius:2px;font-size:.58rem;line-height:1.4}
.liner-tracks .n{font-family:var(--mono);opacity:.6;position:relative}
.liner-tracks .t{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.liner-tracks .d{font-family:var(--mono);opacity:.6}
.liner-tracks button:hover{background:rgba(var(--ink),.12)}
.liner-tracks button:focus-visible{outline:1px solid rgb(var(--ink))}
.liner-tracks button.now{background:rgba(var(--ink),.18);font-weight:700}
.liner-tracks button.now .n{color:transparent}
.liner-tracks button.now .n::after{content:"\25B6";position:absolute;left:0;top:50%;transform:translateY(-50%);font-size:.48rem;color:rgb(var(--ink));opacity:1}
.liner-foot{font-family:var(--mono);font-size:.46rem;letter-spacing:.14em;text-transform:uppercase;opacity:.6;margin-top:5px;
  display:flex;justify-content:space-between;gap:6px}
.case-actions{display:flex;gap:16px;padding-top:4px}

/* ---- case keys: hardware keycaps ---- */
.pbtn{all:unset;box-sizing:border-box;position:relative;cursor:pointer;text-align:center;
  font-family:var(--mono);font-size:.62rem;font-weight:600;letter-spacing:.16em;text-transform:uppercase;line-height:1;
  padding:13px 14px 8px;border-radius:4px;color:var(--cap-ink);
  background:linear-gradient(180deg,var(--cap-hi),var(--cap) 48%,var(--cap-lo));
  /* cap edge · cap height · the well cut into the panel · its lower lip catching light */
  --rise:3px;
  box-shadow:0 0 0 1px rgba(0,0,0,.55),0 var(--rise) 0 1px rgba(0,0,0,.42),
    0 calc(var(--rise) - 3px) 0 5px var(--well),0 calc(var(--rise) - 2px) 0 5px var(--well-hi),
    inset 0 1px 0 rgba(255,255,255,.13),inset 0 -2px 3px rgba(0,0,0,.25);
  transition:transform .06s,box-shadow .06s,filter .2s}
/* LED window across the top of the cap */
.pbtn::before{content:"";position:absolute;left:10px;right:10px;top:5px;height:2px;border-radius:1px;
  background:rgba(0,0,0,.6);box-shadow:inset 0 1px 1px rgba(0,0,0,.5),0 1px 0 rgba(255,255,255,.06);transition:background .2s,box-shadow .2s}
.pbtn:hover{filter:brightness(1.1)}
/* pressed: the cap drops into its well (the well itself stays put) */
.pbtn:active{transform:translateY(2px);--rise:1px}
.pbtn:disabled{cursor:default;pointer-events:none;color:color-mix(in srgb,var(--cap-ink) 42%,var(--cap))}
.pbtn:focus-visible{outline:2px solid var(--accent);outline-offset:7px}
.pbtn.accent{color:#2a1306;background:linear-gradient(180deg,#f4925d,var(--accent) 50%,#c35a27)}
.pbtn.accent::before{background:rgba(70,22,0,.5)}
.pbtn.accent:disabled{filter:saturate(.4) brightness(.92);color:rgba(42,19,6,.55)}
/* lit states */
.pbtn.lit-green::before,#toggleCase[data-on="true"]::before{background:var(--led-green);box-shadow:0 0 6px var(--led-green),0 0 2px var(--led-green)}
#loadBtn:not(:disabled)::before,.pbtn.lit-amber::before{background:#fff1c9;box-shadow:0 0 6px var(--led-amber),0 0 2px var(--led-amber)}
#reconnectBtn::before{background:#fff1c9;box-shadow:0 0 7px var(--led-amber);animation:led-attn 1.6s ease-in-out 3}
@keyframes led-attn{50%{opacity:.2}} /* three pulses, then steady: a never-ending CSS animation costs a style pass
   every frame in Firefox, which made the slot animation stutter */

/* ---- device body ---- */
.player-col{--strip-w:74px;--disc:210px;position:relative;width:100%;max-width:500px;margin-top:22px} /* headroom for a disc standing in the slot */ /* --disc: 84% of the 250px deck */
.device{display:flex;border-radius:14px;overflow:hidden;background:var(--body);
  box-shadow:0 1px 0 var(--body-hi) inset,0 -1px 0 var(--body-lo) inset,0 24px 44px -12px var(--shadow),0 4px 10px var(--shadow)}
.device-main{position:relative;flex:1;min-width:0;padding:16px;
  background:linear-gradient(180deg,var(--body-hi),var(--body) 30%,var(--body))}
.strip{flex:0 0 var(--strip-w);display:flex;flex-direction:column;align-items:center;justify-content:space-between;gap:18px;
  padding:22px 0 18px;background:var(--strip);box-shadow:inset 1px 0 0 var(--seam),inset 2px 0 0 rgba(255,255,255,.05)}

/* ---- deck + LCD (unchanged screen parts) ---- */
.deck{position:relative;height:250px;border-radius:9px;background:#070f14;overflow:hidden;
  box-shadow:inset 0 3px 14px rgba(0,0,0,.7);display:flex;align-items:center;justify-content:center}
.deck-glass{position:absolute;inset:6px;border-radius:6px;background:
  radial-gradient(circle at 50% 38%,rgba(var(--a1),.1),transparent 65%);
  box-shadow:inset 0 0 0 1px rgba(255,255,255,.05)}
.player-cd-wrap{position:absolute;height:84%;aspect-ratio:1;left:50%;top:50%;
  transform:translate(-50%,-50%);opacity:0;pointer-events:none}
.player-cd-wrap.shown{opacity:1}
/* slot loader: a slit in the top of the body, right over the deck window. The disc stands in it, partly out,
   and the motor draws it down; .slot-feed is the part still outside, clipped at the slit. */
.disc-slot{position:absolute;top:5px;left:calc(16px + (100% - 32px) / 2);width:calc(var(--disc) + 14px);height:5px;transform:translateX(-50%);
  border-radius:3px;background:linear-gradient(180deg,#050505,#1e1c1a);
  box-shadow:inset 0 2px 2px rgba(0,0,0,.8),0 1px 0 var(--body-hi),0 -1px 0 var(--body-lo)}
.disc-slot::after{content:"";position:absolute;left:8px;right:8px;bottom:1px;height:1px;border-radius:1px;background:var(--accent);
  opacity:0;transition:opacity .25s} /* the drive light inside the slit, on while the motor runs */
.device.feeding .disc-slot::after{opacity:.75}
.slot-feed{position:absolute;bottom:calc(100% - 8px);left:16px;right:calc(var(--strip-w) + 16px);height:72px;
  overflow:hidden;pointer-events:none;z-index:2;visibility:hidden}
.slot-feed.feeding{visibility:visible}
.slot-feed canvas{position:absolute;left:50%;top:calc(100% - 44px);width:var(--disc);height:var(--disc);margin-left:calc(var(--disc) / -2)} /* 44px stands out of the slot */
.player-cd-wrap canvas{width:100%;height:100%;display:block}
.deck-empty{position:absolute;font-family:var(--mono);font-size:.68rem;letter-spacing:.12em;color:var(--s-muted);
  text-transform:uppercase;opacity:.6;transition:opacity .3s}
.deck-empty.hide{opacity:0}

.lcd{margin-top:14px;background:#06100a;border-radius:7px;padding:12px 14px;
  box-shadow:inset 0 0 0 1px rgba(255,255,255,.05), inset 0 0 18px rgba(0,0,0,.6)}
.lcd-row1{display:flex;justify-content:space-between;align-items:baseline;gap:10px;font-family:var(--mono);color:#9fe8b0;
  text-shadow:0 0 8px rgba(159,232,176,.5)}
.lcd-title{font-size:.94rem;letter-spacing:.03em;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;flex:1 1 auto;min-width:0}
.lcd-time{font-size:.7rem;letter-spacing:.04em;white-space:nowrap;flex:none}
.lcd-row2{display:flex;justify-content:space-between;align-items:center;margin-top:8px;font-family:var(--mono);
  font-size:.65rem;color:#6fae7e;letter-spacing:.1em}
.lcd-bars{display:flex;gap:3px;align-items:flex-end;height:16px}
.lcd-bars b{width:3px;background:#9fe8b0;box-shadow:0 0 6px rgba(159,232,176,.6);border-radius:1px;height:100%;
  transform-origin:50% 100%;transform:scaleY(.1);will-change:transform} /* JS scales it: no layout per frame */
.lcd-tot{opacity:.5;font-size:.9em}
/* long titles scroll like a CD player display: hold at the start, then loop through a gap */
.lcd-marquee{display:inline-block;white-space:nowrap}
.lcd-title.scroll{text-overflow:clip;position:relative}
/* edge fades as overlays in the LCD's color, not mask-image: a masked box repaints every frame while its
   text scrolls (notably in Firefox); this way the scrolling text is a plain transform on the compositor */
.lcd-title.scroll::before,.lcd-title.scroll::after{content:"";position:absolute;top:0;bottom:0;z-index:1;pointer-events:none}
.lcd-title.scroll::before{left:0;width:4px;background:linear-gradient(90deg,#06100a,rgba(6,16,10,0))}
.lcd-title.scroll::after{right:0;width:16px;background:linear-gradient(270deg,#06100a,rgba(6,16,10,0))}
.lcd-title.scroll .lcd-marquee{animation:lcd-marquee var(--dur,10s) linear infinite;will-change:transform}
.lcd-title.scroll .lcd-marquee>span{padding-right:3em}
@keyframes lcd-marquee{0%,18%{transform:translateX(0)}100%{transform:translateX(calc(-1 * var(--loop,0px)))}}
/* segment-style blink: elapsed time while paused, the status word while the disc moves through the slot */
.lcd .blink{animation:lcd-blink 1s step-end infinite}
@keyframes lcd-blink{50%{opacity:.12}}
.lcd-rail{position:relative;height:3px;margin-top:10px;border-radius:2px;background:rgba(159,232,176,.14);cursor:pointer;touch-action:none}
.lcd-rail::before{content:"";position:absolute;inset:-8px 0} /* bigger hit area */
.lcd-rail .fill{position:absolute;left:0;top:0;bottom:0;width:100%;transform-origin:0 50%;transform:scaleX(0);border-radius:2px;background:#9fe8b0;box-shadow:0 0 6px rgba(159,232,176,.6)}
.lcd-rail:focus-visible{outline:1px solid #9fe8b0;outline-offset:4px}

/* ---- slot keys on the strip ---- */
.slots{display:flex;flex-direction:column;gap:6px;align-items:stretch;width:100%;padding:0 10px}
.slot{all:unset;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:6px;height:30px;padding:0 4px;border-radius:4px}
.slot svg{width:11px;height:11px;fill:currentColor;color:var(--strip-print);flex:none;opacity:.9}
.slot i{display:block;width:28px;height:7px;border-radius:2px;background:linear-gradient(180deg,var(--slot-hi),var(--slot));
  box-shadow:0 1px 0 rgba(255,255,255,.08),inset 0 -1px 0 rgba(0,0,0,.4);transition:transform .08s,filter .2s}
.slot.play i{background:linear-gradient(180deg,#f08a55,var(--accent));transition:transform .08s,filter .2s,box-shadow .35s}
/* the Play key is backlit while the disc turns */
.slot.play.on i{background:linear-gradient(180deg,#ffb27e,#f2793c);
  box-shadow:0 1px 3px rgba(242,121,60,.55),0 1px 0 rgba(255,255,255,.08),inset 0 1px 0 rgba(255,236,214,.6)}
.slot.play.on svg{color:var(--accent);opacity:1}
.slot:hover i{filter:brightness(1.35)}
.slot:active i{transform:translateY(1px) scaleY(.85)}
.slot:disabled{opacity:.4;pointer-events:none}
.slot:focus-visible{outline:2px solid var(--accent);outline-offset:0}

/* ---- theme switch: a 3-position slide switch on the strip (System / Light / Dark) ---- */
.mode-switch{all:unset;box-sizing:border-box;cursor:pointer;display:grid;grid-template-columns:auto auto;column-gap:6px;row-gap:6px;
  align-items:center;justify-items:center;padding:4px 5px;border-radius:5px}
.mode-switch:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.mode-legends{display:grid;grid-template-rows:repeat(3,12px);row-gap:2px;align-items:center}
.mode-legends svg{display:block;width:9px;height:9px;fill:currentColor;color:var(--strip-print);opacity:.5;transition:opacity .2s,color .2s}
.mode-switch[data-mode="system"] .ico-system,.mode-switch[data-mode="light"] .ico-light,.mode-switch[data-mode="dark"] .ico-dark{opacity:1;color:var(--accent)}
.mode-track{position:relative;width:12px;height:40px;border-radius:6px;background:linear-gradient(180deg,var(--slot-hi),var(--slot));
  box-shadow:inset 0 1px 3px rgba(0,0,0,.55),0 1px 0 rgba(255,255,255,.08)}
.mode-nub{position:absolute;left:1px;top:1px;width:10px;height:12px;border-radius:3px;
  background:linear-gradient(180deg,#f3eee6,#c7c0b4);box-shadow:0 1px 2px rgba(0,0,0,.55),inset 0 -1px 0 rgba(0,0,0,.15);
  transition:transform .18s cubic-bezier(.16,1,.3,1)} /* snaps into its detent, no overshoot */
.mode-switch[data-mode="light"] .mode-nub{transform:translateY(13px)}
.mode-switch[data-mode="dark"] .mode-nub{transform:translateY(26px)}
.mode-switch:hover .mode-nub{filter:brightness(1.08)}
.mode-switch:active .mode-nub{filter:brightness(.92)}
.mode-switch .legend{grid-column:1/-1}
@media (prefers-reduced-motion:reduce){ .mode-nub{transition:none} }

/* ---- volume knob ---- */
.knob-wrap{display:flex;flex-direction:column;align-items:center;gap:6px}
.knob{--rot:0deg;width:44px;height:44px;border-radius:50%;cursor:grab;touch-action:none;position:relative;
  background:
    repeating-conic-gradient(from 0deg,rgba(255,255,255,.05) 0 4deg,transparent 4deg 8deg),
    radial-gradient(circle at 38% 30%,var(--knob-hi),var(--knob) 62%);
  box-shadow:0 3px 6px var(--shadow),0 0 0 3px rgba(0,0,0,.12),inset 0 1px 0 rgba(255,255,255,.1);
  transform:rotate(var(--rot))}
.knob:active{cursor:grabbing}
.knob:focus-visible{outline:2px solid var(--accent);outline-offset:4px}
.knob-mark{position:absolute;left:50%;top:5px;width:3px;height:10px;margin-left:-1.5px;border-radius:2px;background:var(--accent)}
.legend{font-family:var(--mono);font-size:.55rem;letter-spacing:.24em;text-transform:uppercase;color:var(--strip-print)}

.drop-hint{position:fixed;inset:12px;z-index:10;display:grid;place-items:center;background:color-mix(in srgb,var(--bg) 88%,transparent);
  border:2px dashed var(--accent);border-radius:16px;opacity:0;pointer-events:none;transition:opacity .15s;
  font-family:var(--mono);font-size:.8rem;letter-spacing:.12em;text-transform:uppercase}
.frame.dragging .drop-hint{opacity:1}

.lib-note{margin:12px 0 0;font-size:.82rem;color:var(--muted);min-height:1.2em}
.lib-note code{font-family:var(--mono);font-size:.78rem}


@media (max-width:760px){ .scene{grid-template-columns:1fr} .rack-col{min-height:0;height:290px} }
@media (max-width:480px){ .case-area{--cw:150px} .liner{padding:8px 7px 7px 9px} }
@media (max-width:420px){ .player-col{--strip-w:62px} .slots{padding:0 6px} .slot i{width:22px} }
@media (prefers-reduced-motion:reduce){ .case-front,.case-stage,.spine,.disc-slot::after{transition:none!important} .lcd-title.scroll .lcd-marquee{animation:none} .lcd .blink{animation:none;opacity:.55} }