/* ==========================================================================
   Structure de la page : fond, barre du haut, zone centrale, lecteur, onglets mobiles.
   ========================================================================== */

/* Fond : la jaquette courante floutée (deux calques en fondu enchaîné) + taches de couleur floues qui dérivent
   (couleurs de la jaquette, voir js/ui/backdrop.js ; même style que l'écran des paroles). */
@property --c1 { syntax: '<color>'; inherits: true; initial-value: #a855f7; }
@property --c2 { syntax: '<color>'; inherits: true; initial-value: #e879f9; }
@property --c3 { syntax: '<color>'; inherits: true; initial-value: #22d3ee; }
@property --c4 { syntax: '<color>'; inherits: true; initial-value: #f472b6; }
#backdrop {
  position: fixed; inset: 0; z-index: 0; overflow: hidden; background: var(--ink-950);
  transition: --c1 1.6s ease, --c2 1.6s ease, --c3 1.6s ease, --c4 1.6s ease;
}
#backdrop .bd {
  position: absolute; inset: -60px; background-size: cover; background-position: center;
  filter: blur(60px) saturate(1.5); opacity: 0; transform: scale(1.1);
  transition: opacity 0.9s ease;
}
#backdrop .bd.on { opacity: 0.45; }
/* Taches : dégradés radiaux (déjà flous par nature, pas de filtre = léger pour le processeur graphique). */
#backdrop .bd-blobs { position: absolute; inset: 0; opacity: 0.85; }
#backdrop .blob { background: radial-gradient(circle, color-mix(in srgb, var(--c) 62%, transparent) 0%, color-mix(in srgb, var(--c) 22%, transparent) 38%, transparent 68%); opacity: 0.8; will-change: transform; }
#backdrop.is-paused .blob { animation-play-state: paused; }
#backdrop::after {
  content: ""; position: absolute; inset: 0;
  background:
    radial-gradient(ellipse at 50% 40%, rgba(11, 6, 22, 0.15), rgba(11, 6, 22, 0.55) 80%),
    linear-gradient(180deg, rgba(11, 6, 22, 0.45), rgba(11, 6, 22, 0.25) 40%, rgba(11, 6, 22, 0.7));
}

#app {
  position: relative; z-index: 1; height: 100dvh;
  display: grid; grid-template-rows: auto minmax(0, 1fr) auto auto;
}

/* ---------- Barre du haut ---------- */
.topbar {
  display: flex; align-items: center; gap: 20px;
  height: calc(var(--topbar-h) + env(safe-area-inset-top, 0px)); padding: env(safe-area-inset-top, 0px) 24px 0;
  border-bottom: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(18, 10, 36, 0.8), rgba(18, 10, 36, 0.4));
  backdrop-filter: blur(14px);
}
.brand { display: flex; align-items: center; gap: 10px; font-weight: 750; font-size: 1.1rem; letter-spacing: -0.01em; }
.brand img { width: 34px; height: 34px; border-radius: 50%; box-shadow: 0 0 0 2px var(--violet-500), 0 0 18px rgba(139, 92, 246, 0.55); }

.nav { display: flex; gap: 4px; margin-left: 8px; }
.nav a {
  position: relative; padding: 8px 14px; border-radius: 999px; color: var(--text-dim); font-weight: 600;
  transition: color 0.2s, background 0.2s;
}
.nav a:hover { color: var(--text); background: rgba(167, 139, 250, 0.1); }
.nav a[aria-current="page"] { color: var(--text); background: rgba(139, 92, 246, 0.24); box-shadow: inset 0 0 0 1px rgba(167, 139, 250, 0.4); }

.topbar__actions { margin-left: auto; display: flex; align-items: center; gap: 10px; }

/* ---------- Zone centrale ---------- */
#view { min-height: 0; overflow-y: auto; overflow-x: hidden; position: relative; }
#view.is-fill { overflow: hidden; }

.page { max-width: 1100px; margin: 0 auto; padding: 28px 24px 40px; display: flex; flex-direction: column; gap: 22px; }
.page__head { display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; }

/* ---------- Écran de sélection (style osu!) ---------- */
.select {
  height: 100%; display: grid; gap: 30px;
  grid-template-columns: minmax(320px, 5fr) minmax(0, 7fr);
  padding: 14px 18px 0 30px;
}
.select__detail { min-height: 0; overflow-y: auto; align-self: stretch; display: flex; padding-right: 6px; }
/* Centré verticalement s'il tient, sinon collé en haut et défilable (avec align-items: center, le haut était coupé et inaccessible). */
.select__detail > * { margin-block: auto; }
.select__main { min-height: 0; display: flex; flex-direction: column; }
.select__head { display: flex; flex-direction: column; gap: 12px; padding: 4px 52px 12px 44px; }
.select__list { flex: 1; min-height: 0; overflow-y: auto; overflow-x: hidden; padding: 8px 52px 28px 44px; }

/* ---------- Lecteur (barre du bas) ---------- */
.player {
  position: relative;
  display: grid; grid-template-columns: minmax(0, 1fr) minmax(320px, 560px) minmax(0, 1fr);
  align-items: center; gap: 18px;
  padding: 10px 24px; min-height: 84px;
  border-top: 1px solid var(--line);
  background: var(--glass-strong); backdrop-filter: blur(18px);
}
.player__track { display: flex; align-items: center; gap: 12px; min-width: 0; text-align: left; }
.player__cover { width: 56px; height: 56px; border-radius: 12px; object-fit: cover; flex: none; background: var(--ink-700); }
.player__text { min-width: 0; }
.player__title { font-weight: 650; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.player__artist { color: var(--text-dim); font-size: 0.86rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.player__center { display: flex; flex-direction: column; gap: 6px; align-items: stretch; }
.player__buttons { display: flex; justify-content: center; align-items: center; gap: 10px; }
.player__seek { display: flex; align-items: center; gap: 10px; font-size: 0.78rem; color: var(--text-dim); font-variant-numeric: tabular-nums; }
.player__seek .slider { flex: 1; }
.player__right { display: flex; justify-content: flex-end; align-items: center; gap: 8px; }
.player__volume { display: flex; align-items: center; gap: 6px; }
.player__volume .slider { width: 110px; }

/* ---------- Onglets du bas (mobile) ---------- */
.tabbar { display: none; }

/* ==========================================================================
   Tablette et mobile
   ========================================================================== */
@media (max-width: 1100px) {
  .select { grid-template-columns: minmax(260px, 4fr) minmax(0, 6fr); gap: 20px; padding-left: 20px; }
  .player { grid-template-columns: minmax(0, 1fr) minmax(280px, 460px) auto; }
  .player__volume .slider { width: 80px; }
}

@media (max-width: 800px) {
  :root { --topbar-h: 54px; }
  .topbar { padding: env(safe-area-inset-top, 0px) 14px 0; gap: 10px; }
  .nav { display: none; }
  .brand span { font-size: 1.02rem; }

  .page { padding: 18px 14px 28px; }

  .select { display: block; padding: 0; }
  .select__main { height: 100%; }
  .select__detail { display: none; }
  .select__head { padding: 8px 12px 8px; }
  .select__list { padding: 4px 10px 16px; }

  /* Lecteur compact : pochette + titre + lecture/suivant, fine barre de progression en haut */
  .player {
    grid-template-columns: minmax(0, 1fr) auto; gap: 8px; min-height: 64px; padding: 8px 12px;
  }
  .player__center { display: contents; }
  .player__buttons { grid-column: 2; grid-row: 1; gap: 2px; }
  .player__buttons .only-desktop, .player__right { display: none; }
  .player__seek { position: absolute; left: 0; right: 0; top: -1px; height: 3px; padding: 0; }
  .player__seek .time { display: none; }
  .player__cover { width: 44px; height: 44px; border-radius: 10px; }

  .tabbar {
    display: grid; grid-auto-flow: column; grid-auto-columns: minmax(0, 1fr);   /* autant de colonnes que d'onglets */
    padding-bottom: env(safe-area-inset-bottom);
    background: var(--glass-strong); backdrop-filter: blur(18px);
    border-top: 1px solid var(--line);
  }
  .tabbar a {
    display: flex; flex-direction: column; align-items: center; gap: 2px;
    padding: 8px 2px 7px; color: var(--text-faint); font-size: 0.68rem; font-weight: 650;
    transition: color 0.2s;
  }
  .tabbar a[aria-current="page"] { color: var(--violet-300); }
  .tabbar a[aria-current="page"] svg { filter: drop-shadow(0 0 8px rgba(167, 139, 250, 0.8)); }
}

@media (hover: none) { .player__volume { display: none; } } /* le volume est géré par les boutons du téléphone */

/* Bouton "Ajouter" : texte masqué sur petit écran */
@media (max-width: 800px) {
  #btn-upload { width: 40px; padding: 0; } #btn-upload .label { display: none; }
}