.btc-open { display: flex; align-items: center; justify-content: center; gap: 10px; width: 100%; 
                padding: 14px 18px; background: #3e89c2; border: 1px solid #e5e7eb; border-radius: 10px; 
                box-shadow: 0 1px 2px rgba(15,23,42,.04); color: #fff; 
                font: 700 15px/1 inherit; 
                cursor: pointer; transition: border-color .15s, background .15s, transform .05s; }
        .btc-open:hover { border-color: #f08a1e; background: #fff9ef; color: #000; }
        .btc-open:active { transform: scale(.995); }
        .btc-open svg { width: 18px; height: 18px; color: #f08a1e; }
        .btc-open .n { margin-inline-start: auto; background: #f6f7f9; color: #1f242b; padding: 3px 10px; border-radius: 99px; font-size: 12.5px; }

    .btc-drawer { position: fixed; inset: 0; z-index: 9998; pointer-events: none; visibility: hidden; }
        .btc-drawer.open { pointer-events: auto; visibility: visible;     z-index: 999999999;}
        .btc-drawer .btc-backdrop { position: absolute; inset: 0; background: rgba(15,23,42,.55); opacity: 0; transition: opacity .35s ease; }
        .btc-drawer.open .btc-backdrop { opacity: 1; }

        .btc-drawer .btc-panel { position: absolute; top: 0; bottom: 0; right: 0; left: auto; width: 100%; background: #f3f4f6; box-shadow: -12px 0 32px -8px rgba(15,23,42,.35); transform: translateX(100%); /* start off-screen to the right (RTL-safe below) */ transition: transform .38s cubic-bezier(.22,.61,.36,1); display: flex; flex-direction: column; }
    .btc-drawer.open .btc-panel,
    html[dir="rtl"] .btc-drawer.open .btc-panel { transform: translateX(0); }

    .btc-drawer .btc-panel-head { display: flex; align-items: center; gap: 10px; padding: 12px 14px; background: #fff; border-bottom: 1px solid #e5e7eb; flex-shrink: 0; }
        .btc-drawer .btc-panel-head h3 { margin: 0; font-size: 15px; font-weight: 800; color: #111317; }
    .btc-drawer .btc-close { margin-inline-start: auto; width: 32px; height: 32px; border-radius: 8px; border: 0; background: #f6f7f9; cursor: pointer; display: grid; place-items: center; color: #6b7280; transition: background .12s, color .12s; }
        .btc-drawer .btc-close:hover { background: #fef2f2; color: #dc2626; }
        .btc-drawer .btc-close svg { width: 14px; height: 14px; }

    .btc-drawer .btc-body { flex: 1; overflow-y: auto; font-family: "IBM Plex Sans Arabic","Cairo",sans-serif; }

    .btc-drawer .btc-spin { display: grid; place-items: center; padding: 60px 0; color: #6b7280; font-size: 13px; }
        .btc-drawer .btc-spin .r { width: 22px; height: 22px; margin-bottom: 10px; border: 2.5px solid #e5e7eb; border-top-color: #f08a1e; border-radius: 50%; animation: btc-r 0.8s linear infinite; }

    @keyframes btc-r {
        to { transform: rotate(360deg); }
    }

    body.btc-lock { overflow: hidden; }