/* Studio 4Radio — Player universel (sticky bottom).
   Variables CSS personnalisables par chaque thème :
   --sr4-primary, --sr4-bg, --sr4-surface, --sr4-text */

:root {
    --sr4-primary: #f97316;
    --sr4-bg: rgba(10, 10, 12, 0.96);
    --sr4-surface: rgba(255, 255, 255, 0.06);
    --sr4-text: #ffffff;
    --sr4-text-muted: rgba(255, 255, 255, 0.6);
    --sr4-shadow: 0 -12px 40px rgba(0, 0, 0, 0.55);
}

#sr4-player {
    position: fixed;
    left: 0; right: 0; bottom: 0;
    z-index: 9999;
    background: var(--sr4-bg);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    color: var(--sr4-text);
    padding: 12px 20px;
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: 16px;
    align-items: center;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    box-shadow: var(--sr4-shadow);
    font-family: -apple-system, system-ui, 'Inter', sans-serif;
    transition: transform .3s ease;
}
body { padding-bottom: 96px !important; }

/* Cover + visualizer overlay */
.sr4-cover-box {
    position: relative;
    width: 56px; height: 56px;
    border-radius: 10px;
    overflow: hidden;
    background: linear-gradient(135deg, var(--sr4-primary), rgba(255,255,255,0.1));
    flex-shrink: 0;
}
#sr4-cover {
    width: 100%; height: 100%;
    object-fit: cover;
    transition: opacity .3s, transform .3s;
}
.sr4-viz {
    position: absolute; inset: 0;
    display: flex;
    align-items: flex-end;
    justify-content: space-around;
    padding: 6px 4px;
    pointer-events: none;
    opacity: 0;
    transition: opacity .25s;
    background: linear-gradient(to top, rgba(0,0,0,0.55), transparent 60%);
}
#sr4-player.sr4-active .sr4-viz { opacity: 1; }
.sr4-viz-bar {
    width: 2px;
    background: var(--sr4-primary);
    border-radius: 2px;
    height: 30%;
    animation: sr4-viz 0.9s ease-in-out infinite alternate;
}
@keyframes sr4-viz {
    0% { height: 12%; }
    50% { height: 85%; }
    100% { height: 30%; }
}

/* Info texte */
.sr4-left {
    display: flex; align-items: center; gap: 14px;
    min-width: 0;
}
.sr4-info { min-width: 0; flex: 1; }
#sr4-title {
    font-size: 14px;
    font-weight: 700;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    line-height: 1.2;
}
#sr4-artist {
    font-size: 12px;
    color: var(--sr4-text-muted);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    margin-top: 2px;
}

/* Centre = bouton play */
.sr4-center { display: flex; justify-content: center; }
#sr4-play {
    width: 52px; height: 52px;
    border-radius: 50%;
    border: none;
    background: var(--sr4-primary);
    color: #ffffff;
    cursor: pointer;
    display: inline-flex; align-items: center; justify-content: center;
    box-shadow: 0 4px 18px rgba(0, 0, 0, 0.35), 0 0 0 0 rgba(249,115,22,0.5);
    transition: transform .15s, box-shadow .25s;
}
#sr4-play:hover { transform: scale(1.06); }
#sr4-play svg { width: 22px; height: 22px; }
#sr4-player.sr4-playing #sr4-play {
    animation: sr4-pulse 2s ease-in-out infinite;
}
@keyframes sr4-pulse {
    0%, 100% { box-shadow: 0 4px 18px rgba(0,0,0,.35), 0 0 0 0 var(--sr4-primary); }
    50% { box-shadow: 0 4px 18px rgba(0,0,0,.35), 0 0 0 12px rgba(249,115,22,0); }
}

/* Right = select stations + expand */
.sr4-right {
    display: flex; align-items: center; gap: 10px; justify-self: end;
}
#sr4-stations {
    background: var(--sr4-surface);
    color: var(--sr4-text);
    border: 1px solid rgba(255,255,255,0.12);
    padding: 8px 10px;
    border-radius: 8px;
    font-size: 12px;
    cursor: pointer;
}
#sr4-stations option { background: #18181b; color: #fff; }
.sr4-expand {
    background: transparent;
    border: 1px solid rgba(255,255,255,0.12);
    color: var(--sr4-text);
    width: 36px; height: 36px;
    border-radius: 8px;
    cursor: pointer;
    display: inline-flex; align-items: center; justify-content: center;
    transition: background .15s;
}
.sr4-expand:hover { background: var(--sr4-surface); }
.sr4-expand svg { width: 16px; height: 16px; }

#sr4-audio { display: none; }

/* Mobile */
@media (max-width: 720px) {
    #sr4-player { grid-template-columns: 1fr auto; padding: 10px 12px; gap: 10px; }
    .sr4-right { display: none; }
    .sr4-cover-box { width: 44px; height: 44px; }
    #sr4-title { font-size: 13px; }
    #sr4-artist { font-size: 11px; }
    body { padding-bottom: 82px !important; }
}

/* Mode étendu (clic expand) */
#sr4-player:not(.sr4-collapsed) {
    grid-template-columns: 1fr;
    grid-template-rows: auto auto auto;
    padding: 24px;
    height: 70vh;
    text-align: center;
}
#sr4-player:not(.sr4-collapsed) .sr4-cover-box {
    width: min(280px, 60vw); height: min(280px, 60vw);
    margin: 0 auto 20px;
    border-radius: 18px;
    box-shadow: 0 20px 60px rgba(0,0,0,.6);
}
#sr4-player:not(.sr4-collapsed) #sr4-title {
    font-size: 22px; white-space: normal;
}
#sr4-player:not(.sr4-collapsed) #sr4-artist {
    font-size: 16px; white-space: normal; margin-top: 8px;
}
#sr4-player:not(.sr4-collapsed) .sr4-left { flex-direction: column; }
#sr4-player:not(.sr4-collapsed) #sr4-play { width: 72px; height: 72px; }
#sr4-player:not(.sr4-collapsed) #sr4-play svg { width: 32px; height: 32px; }