.qr-reader-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.8);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 999999;
    backdrop-filter: blur(5px);
}

.qr-reader-modal {
    background: white;
    border-radius: 12px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
    max-width: 90vw;
    max-height: 90vh;
    width: 500px;
    overflow: hidden;
    animation: qr-reader-fade-in 0.3s ease-out;
}

@keyframes qr-reader-fade-in {
    from { opacity: 0; transform: scale(0.9); }
    to { opacity: 1; transform: scale(1); }
}

.qr-reader-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
    background: #f8f9fa;
    border-bottom: 1px solid #e9ecef;
}

.qr-reader-header h3 {
    margin: 0;
    color: #333;
    font-size: 18px;
    font-weight: 600;
}

.qr-reader-close {
    background: none;
    border: none;
    font-size: 24px;
    color: #666;
    cursor: pointer;
    padding: 0;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: all 0.2s ease;
}

.qr-reader-close:hover {
    background-color: #f0f0f0;
    color: #333;
}

.qr-reader-content {
    padding: 20px;
}

.qr-reader-video {
    width: 100%;
    height: 300px;
    object-fit: cover;
    border-radius: 8px;
    background: #000;
    display: block;
}

.qr-reader-controls {
    margin-top: 15px;
    text-align: center;
}

.qr-reader-btn {
    background: #007cba;
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 6px;
    font-size: 14px;
    cursor: pointer;
    transition: background-color 0.2s ease;
    margin: 0 5px;
}

.qr-reader-btn:hover {
    background: #005a87;
}

.qr-reader-status {
    margin-top: 10px;
    color: #666;
    font-size: 14px;
    min-height: 20px;
}

@media (max-width: 768px) {
    .qr-reader-modal { width: 95vw; margin: 10px; }
    .qr-reader-header { padding: 15px; }
    .qr-reader-content { padding: 15px; }
    .qr-reader-video { height: 250px; }
    .qr-reader-btn { padding: 12px 24px; font-size: 16px; }
}

@supports (-webkit-touch-callout: none) {
    .qr-reader-video { -webkit-playsinline: true; playsinline: true; }
}

.qr-reader-close:focus, .qr-reader-btn:focus {
    outline: 2px solid #007cba;
    outline-offset: 2px;
}

@media (prefers-color-scheme: dark) {
    .qr-reader-modal { background: #2d3748; color: #e2e8f0; }
    .qr-reader-header { background: #4a5568; border-bottom-color: #2d3748; }
    .qr-reader-header h3 { color: #e2e8f0; }
    .qr-reader-close { color: #a0aec0; }
    .qr-reader-close:hover { background-color: #2d3748; color: #e2e8f0; }
    .qr-reader-status { color: #a0aec0; }
}