.voice-header-btn {
    border: 1px solid rgba(255, 215, 106, 0.55);
    background: linear-gradient(135deg, rgba(255,215,106,.22), rgba(168,120,255,.18));
    color: var(--text-main, #f5f3ff);
    border-radius: 999px;
    padding: 7px 11px;
    font-weight: 800;
    cursor: pointer;
    white-space: nowrap;
}
.voice-header-btn:disabled { opacity: .45; cursor: not-allowed; }
.s4v-chat-card {
    border: 1px solid rgba(255, 215, 106, .35);
    background: linear-gradient(135deg, rgba(25, 21, 35, .92), rgba(55, 38, 74, .78));
    border-radius: 14px;
    padding: 12px;
    max-width: 360px;
    box-shadow: 0 12px 24px rgba(0,0,0,.18);
}
.s4v-card-title { font-size: 13px; font-weight: 900; color: #ffd76a; margin-bottom: 6px; }
.s4v-card-main { font-size: 15px; color: #fff; margin-bottom: 4px; }
.s4v-card-sub, .s4v-card-meta { color: rgba(255,255,255,.76); font-size: 12px; line-height: 1.35; }
.s4v-card-actions { display:flex; flex-wrap:wrap; gap:8px; margin-top:10px; }
.s4v-btn {
    border: 1px solid rgba(255,255,255,.18);
    border-radius: 999px;
    background: rgba(255,255,255,.08);
    color: #fff;
    padding: 7px 12px;
    font-weight: 800;
    cursor: pointer;
}
.s4v-btn.primary { background: linear-gradient(135deg, #ffd76a, #b48cff); color:#191018; border-color: transparent; }
.s4v-overlay {
    position: fixed;
    inset: 0;
    display: none;
    align-items: center;
    justify-content: center;
    background: rgba(2, 3, 8, .68);
    z-index: 9999;
    padding: 18px;
}
.s4v-overlay.show { display:flex; }
.s4v-panel {
    width: min(420px, 96vw);
    background: linear-gradient(180deg, rgba(23, 20, 32, .98), rgba(12, 13, 18, .98));
    border: 1px solid rgba(255, 215, 106, .28);
    border-radius: 20px;
    padding: 16px;
    color: #fff;
    box-shadow: 0 24px 80px rgba(0,0,0,.5);
}
.s4v-head { display:flex; align-items:center; justify-content:space-between; gap:12px; margin-bottom:10px; }
.s4v-x { width:34px; height:34px; border-radius:50%; border:0; background:rgba(255,255,255,.1); color:#fff; font-size:22px; cursor:pointer; }
.s4v-status { font-size: 14px; font-weight: 800; color:#ffd76a; margin: 8px 0 12px; }
.s4v-remote { width:100%; min-height:44px; display:block; margin:8px 0; }
.s4v-hint { font-size:12px; line-height:1.45; color:rgba(255,255,255,.7); margin:10px 0; }
.s4v-actions { display:flex; flex-wrap:wrap; gap:8px; justify-content:flex-end; margin-top:12px; }
.s4v-mute, .s4v-audio, .s4v-end {
    border: 1px solid rgba(255,255,255,.16);
    border-radius: 999px;
    padding: 8px 13px;
    background: rgba(255,255,255,.08);
    color:#fff;
    font-weight:800;
    cursor:pointer;
}
.s4v-end { background: linear-gradient(135deg, rgba(255,87,87,.95), rgba(255,140,110,.9)); color:#210808; border-color:transparent; }
@media (max-width: 640px) {
    .voice-header-btn { padding: 6px 9px; font-size: 12px; }
    .s4v-panel { border-radius: 16px; }
}