:root {
  --bg: #000;
  --panel: #121212;
  --panel-2: #1f1f1f;
  --hover: #2a2a2a;
  --text: #fff;
  --muted: #b3b3b3;
  --green: #1ed760;
  --radius: 8px;
}
* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; background: var(--bg); color: var(--text);
  font-family: "Segoe UI", system-ui, -apple-system, Helvetica, Arial, sans-serif; overflow: hidden; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
input { font: inherit; }
.hidden { display: none !important; }

/* Login */
.login { height: 100%; display: grid; place-items: center; background: linear-gradient(#1f1f1f, #000); }
.login-box { display: flex; flex-direction: column; gap: 14px; width: 320px; padding: 40px; background: var(--panel); border-radius: var(--radius); }
.login-box input { padding: 12px 14px; border-radius: 4px; border: 1px solid #727272; background: #121212; color: #fff; }
.error { color: #f15e6c; min-height: 1em; margin: 0; font-size: 14px; }
.btn-green { background: var(--green); color: #000; font-weight: 700; padding: 12px; border-radius: 999px; }
.btn-green:hover { transform: scale(1.03); }

/* Layout */
.app { display: grid; height: 100%; padding: 8px; gap: 8px;
  grid-template-columns: 300px 1fr; grid-template-rows: 1fr 80px;
  grid-template-areas: "side main" "player player"; }
.panel { background: var(--panel); border-radius: var(--radius); }
.sidebar { grid-area: side; display: flex; flex-direction: column; gap: 8px; min-height: 0; }
.main { grid-area: main; overflow-y: auto; min-height: 0; position: relative; }
.player { grid-area: player; display: grid; grid-template-columns: 1fr 2fr 1fr; align-items: center; padding: 0 8px; }

.logo { font-weight: 800; font-size: 20px; padding: 4px 12px 12px; }
.logo.big { font-size: 28px; text-align: center; padding-bottom: 16px; }
.nav { padding: 12px; }
.nav-item { display: flex; align-items: center; gap: 16px; padding: 8px 12px; color: var(--muted); font-weight: 700; cursor: pointer; }
.nav-item:hover, .nav-item.active { color: var(--text); }
.ico { width: 24px; text-align: center; font-size: 20px; }

.library { flex: 1; display: flex; flex-direction: column; min-height: 0; padding: 8px; }
.library-head { display: flex; justify-content: space-between; align-items: center; padding-right: 8px; }
.library-list { overflow-y: auto; margin-top: 8px; }
.lib-item { display: flex; gap: 12px; align-items: center; padding: 8px; border-radius: 6px; cursor: pointer; }
.lib-item:hover { background: var(--panel-2); }
.lib-item.active { background: var(--hover); }
.lib-thumb { width: 48px; height: 48px; border-radius: 4px; display: grid; place-items: center; font-size: 22px; flex: none; background: #282828; object-fit: cover; }
.lib-thumb.liked { background: linear-gradient(135deg, #450af5, #c4efd9); }
.lib-name { font-weight: 500; }
.lib-sub { color: var(--muted); font-size: 13px; }

.icon-btn { color: var(--muted); font-size: 18px; padding: 6px; border-radius: 50%; }
.icon-btn:hover { color: var(--text); }
.icon-btn.on { color: var(--green); }

/* Topbar */
.topbar { position: sticky; top: 0; z-index: 5; display: flex; align-items: center; gap: 16px; padding: 16px 24px; background: rgba(18,18,18,.85); backdrop-filter: blur(8px); }
.arrows { display: flex; gap: 8px; }
.round-btn { width: 32px; height: 32px; border-radius: 50%; background: rgba(0,0,0,.7); font-size: 20px; line-height: 1; }
.search { flex: 0 1 360px; padding: 12px 20px; border-radius: 999px; border: 0; background: var(--panel-2); color: #fff; }
.search:focus { outline: 2px solid #fff; }
.user-menu { margin-left: auto; display: flex; gap: 8px; align-items: center; }
.pill { background: #000; padding: 6px 14px; border-radius: 999px; font-size: 14px; font-weight: 700; }
.pill:hover { transform: scale(1.04); }
.avatar { width: 32px; height: 32px; border-radius: 50%; background: #e91429; color: #000; font-weight: 800; border: 4px solid #000; box-sizing: content-box; }

/* Views */
.view { padding: 0 24px 24px; }
h1 { font-size: 32px; margin: 8px 0 20px; }
h2 { font-size: 24px; margin: 28px 0 14px; }
.grid { display: grid; gap: 16px; grid-template-columns: repeat(auto-fill, minmax(170px, 1fr)); }
.card { padding: 12px; border-radius: var(--radius); background: #181818; cursor: pointer; position: relative; transition: background .2s; }
.card:hover { background: #282828; }
.card .cover { width: 100%; aspect-ratio: 1; border-radius: 6px; object-fit: cover; background: #333; display: grid; place-items: center; font-size: 48px; box-shadow: 0 8px 24px rgba(0,0,0,.5); }
.card-title { font-weight: 700; margin-top: 10px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.card-sub { color: var(--muted); font-size: 14px; margin-top: 4px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.card .fab { position: absolute; right: 20px; top: calc(100% - 110px); opacity: 0; transform: translateY(8px); transition: all .25s; }
.card:hover .fab { opacity: 1; transform: none; }
.fab { width: 48px; height: 48px; border-radius: 50%; background: var(--green); color: #000; font-size: 20px; box-shadow: 0 8px 8px rgba(0,0,0,.3); }
.fab:hover { transform: scale(1.06) !important; }

.quick { display: grid; gap: 12px; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); }
.quick-item { display: flex; align-items: center; gap: 12px; background: rgba(255,255,255,.08); border-radius: 4px; overflow: hidden; cursor: pointer; font-weight: 700; }
.quick-item:hover { background: rgba(255,255,255,.18); }
.quick-item img, .quick-item .lib-thumb { width: 64px; height: 64px; border-radius: 0; }

.hero { display: flex; align-items: flex-end; gap: 24px; padding: 24px; margin: 0 -24px 0; background: linear-gradient(#5038a0, var(--panel)); }
.hero .big-cover { width: 220px; height: 220px; border-radius: 4px; object-fit: cover; box-shadow: 0 8px 40px rgba(0,0,0,.6); background: #333; display: grid; place-items: center; font-size: 80px; flex: none; }
.hero-type { font-size: 14px; }
.hero-title { font-size: 64px; font-weight: 900; margin: 8px 0 16px; line-height: 1; letter-spacing: -2px; }
.hero-sub { color: var(--muted); font-size: 14px; }
.hero-sub b { color: var(--text); }
.actions { display: flex; gap: 24px; align-items: center; padding: 24px 0; }
.actions .fab { width: 56px; height: 56px; font-size: 24px; }

.tracklist { width: 100%; border-collapse: collapse; }
.tracklist th { color: var(--muted); font-weight: 400; font-size: 14px; text-align: left; padding: 8px; border-bottom: 1px solid #2a2a2a; }
.tracklist td { padding: 8px; color: var(--muted); font-size: 14px; }
.tracklist tr.row { cursor: default; }
.tracklist tr.row:hover td { background: var(--hover); }
.tracklist tr.row td:first-child { border-radius: 4px 0 0 4px; width: 40px; text-align: right; }
.tracklist tr.row td:last-child { border-radius: 0 4px 4px 0; }
.t-main { display: flex; align-items: center; gap: 12px; }
.t-main img, .t-main .lib-thumb { width: 40px; height: 40px; font-size: 16px; }
.t-title { color: var(--text); font-size: 16px; }
.row.playing .t-title, .row.playing .t-num { color: var(--green); }
.row .like { visibility: hidden; }
.row:hover .like, .row .like.on { visibility: visible; }
.row .more { visibility: hidden; }
.row:hover .more { visibility: visible; }
.empty { color: var(--muted); padding: 40px 0; }

/* Player */
.now { display: flex; align-items: center; gap: 14px; min-width: 0; }
.np-cover { width: 56px; height: 56px; border-radius: 4px; object-fit: cover; background: #282828; }
.np-cover:not([src]), .np-cover[src=""] { visibility: hidden; }
.np-text { min-width: 0; }
.np-title { font-size: 14px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.np-artist { font-size: 12px; color: var(--muted); }
.controls { display: flex; flex-direction: column; align-items: center; gap: 6px; }
.buttons { display: flex; align-items: center; gap: 16px; }
.play-btn { width: 32px; height: 32px; border-radius: 50%; background: #fff; color: #000; font-size: 14px; }
.play-btn:hover { transform: scale(1.06); }
.progress { display: flex; align-items: center; gap: 8px; width: 100%; max-width: 600px; font-size: 12px; color: var(--muted); }
.progress input { flex: 1; }
.extra { display: flex; justify-content: flex-end; align-items: center; gap: 8px; }
.extra input { width: 100px; }

input[type=range] { -webkit-appearance: none; appearance: none; height: 4px; border-radius: 2px; background: #4d4d4d; cursor: pointer; }
input[type=range]::-webkit-slider-thumb { -webkit-appearance: none; width: 12px; height: 12px; border-radius: 50%; background: #fff; opacity: 0; }
input[type=range]:hover::-webkit-slider-thumb { opacity: 1; }

/* Menú contextual */
.ctx { position: fixed; z-index: 50; min-width: 200px; background: #282828; border-radius: 4px; padding: 4px; box-shadow: 0 16px 24px rgba(0,0,0,.5); }
.ctx button { display: block; width: 100%; text-align: left; padding: 10px 12px; border-radius: 2px; font-size: 14px; }
.ctx button:hover { background: #3e3e3e; }
.ctx .sep { height: 1px; background: #3e3e3e; margin: 4px 0; }
.ctx .label { color: var(--muted); font-size: 12px; padding: 6px 12px; }

.tabbar { display: none; }
.library-view .lib-item { padding: 8px 0; }

/* ---------- Móvil ---------- */
@media (max-width: 768px) {
  .app { padding: 0; gap: 0; height: 100dvh;
    grid-template-columns: 1fr; grid-template-rows: 1fr auto auto;
    grid-template-areas: "main" "player" "tabs"; }
  .sidebar { display: none; }
  .main { border-radius: 0; background: linear-gradient(#1f1f1f 0, var(--panel) 260px); }

  .tabbar { grid-area: tabs; display: flex; justify-content: space-around; background: #000;
    padding: 6px 0 calc(6px + env(safe-area-inset-bottom)); }
  .tabbar .nav-item { flex-direction: column; gap: 2px; font-size: 11px; font-weight: 500; padding: 4px 12px; }
  .tabbar .ico { font-size: 22px; }

  .topbar { padding: 12px 16px; background: transparent; backdrop-filter: none; }
  .arrows { display: none; }
  .search { flex: 1; }
  .view { padding: 0 16px 16px; }
  h1 { font-size: 24px; }
  h2 { font-size: 20px; margin-top: 22px; }

  .quick { grid-template-columns: 1fr 1fr; gap: 8px; }
  .quick-item { font-size: 12px; gap: 8px; }
  .quick-item img, .quick-item .lib-thumb { width: 48px; height: 48px; }
  .grid { grid-auto-flow: column; grid-template-columns: none; grid-auto-columns: 140px;
    overflow-x: auto; scroll-snap-type: x mandatory; padding-bottom: 4px; }
  .card { padding: 0; background: none; scroll-snap-align: start; }
  .card:hover { background: none; }
  .card .fab { display: none; }
  .card-title { font-size: 13px; }
  .card-sub { font-size: 12px; }

  .hero { flex-direction: column; align-items: center; text-align: center; margin: 0 -16px; padding: 8px 16px 0; background: none; }
  .hero .big-cover { width: 220px; height: 220px; }
  .hero > div:last-child { align-self: flex-start; text-align: left; }
  .hero-title { font-size: 26px; letter-spacing: 0; margin: 4px 0 6px; }
  .hero-type { display: none; }
  .actions { justify-content: flex-end; padding: 8px 0 12px; }

  .tracklist th, .tracklist td:nth-child(1), .tracklist td:nth-child(3), .tracklist td:nth-child(5) { display: none; }
  .tracklist td { padding: 6px 0; }
  .tracklist tr.row:hover td { background: none; }
  .t-main img, .t-main .lib-thumb { width: 48px; height: 48px; }
  .t-title { font-size: 15px; }
  .row .like, .row .more { visibility: visible; }

  /* Mini reproductor como en la app */
  .player { position: relative; grid-template-columns: 1fr auto; gap: 8px; margin: 0 8px; padding: 8px;
    border-radius: 6px; background: #3a2a4a; }
  .np-cover { width: 40px; height: 40px; }
  .controls { flex-direction: row; }
  .buttons { gap: 4px; }
  #shuffle, #repeat, #prev, .extra { display: none; }
  .play-btn { background: none; color: #fff; font-size: 20px; }
  .progress { position: absolute; left: 8px; right: 8px; bottom: 0; max-width: none; }
  .progress span { display: none; }
  .progress input { height: 2px; border-radius: 0; }
  .progress input::-webkit-slider-thumb { opacity: 0 !important; }
}

::-webkit-scrollbar { width: 12px; }
::-webkit-scrollbar-thumb { background: rgba(255,255,255,.3); border: 3px solid transparent; background-clip: content-box; border-radius: 6px; }