* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background-color: #f5f5f5;
    color: #333;
    line-height: 1.6;
}

.container {
    max-width: 900px;
    margin: 2rem auto;
    padding: 2rem;
    background-color: #fff;
    border-radius: 10px;
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.1);
}

h1 {
    text-align: center;
    margin-bottom: 2rem;
    color: #2c3e50;
}

h2 {
    color: #3498db;
    margin-bottom: 1rem;
}

h3 {
    color: #2c3e50;
    margin-bottom: 0.8rem;
}

.upload-section {
    margin-bottom: 2rem;
    text-align: center;
}

.upload-label {
    display: inline-block;
    padding: 12px 24px;
    background-color: #3498db;
    color: white;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.3s;
}

.upload-label:hover {
    background-color: #2980b9;
}

input[type="file"] {
    display: none;
}

.preview-section {
    display: flex;
    flex-wrap: wrap;
    gap: 2rem;
    margin-bottom: 2rem;
}

.image-preview, .result-section {
    flex: 1;
    min-width: 300px;
}

#scanner-container {
    position: relative;
    max-width: 100%;
    margin-top: 1rem;
    border-radius: 5px;
    overflow: hidden;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

#preview {
    max-width: 100%;
    display: block;
}

#scanCanvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 10;
    pointer-events: none;
}

#status {
    margin-bottom: 1rem;
    padding: 10px;
    background-color: #f8f9fa;
    border-radius: 5px;
    font-style: italic;
}

#result {
    padding: 15px;
    background-color: #e9f7fe;
    border-radius: 5px;
    border-left: 4px solid #3498db;
    word-break: break-all;
    min-height: 50px;
    white-space: pre-line;
}

.info-section, .troubleshooting-section {
    margin-top: 2rem;
    padding: 1.5rem;
    background-color: #f8f9fa;
    border-radius: 5px;
}

.info-section {
    border-left: 4px solid #2c3e50;
}

.troubleshooting-section {
    border-left: 4px solid #e74c3c;
    margin-top: 1.5rem;
}

.info-section ul, .troubleshooting-section ol {
    margin-left: 1.5rem;
    margin-top: 0.5rem;
}

.info-section p, .troubleshooting-section p {
    margin-bottom: 0.5rem;
}

.troubleshooting-section li {
    margin-bottom: 0.5rem;
}

.troubleshooting-section strong {
    color: #e74c3c;
}

/* Security warning */
.security-warning {
    background-color: #fff3cd;
    color: #856404;
    padding: 15px;
    margin-bottom: 20px;
    border-radius: 5px;
    border-left: 4px solid #ffc107;
    font-size: 0.95rem;
    line-height: 1.5;
}

.security-warning strong {
    color: #e67e22;
}

/* Camera styles */
.camera-controls {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin: 1rem 0;
}

.camera-controls button {
    padding: 10px 20px;
    background-color: #3498db;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.3s;
    font-size: 1rem;
}

.camera-controls button:hover {
    background-color: #2980b9;
}

.camera-controls button:disabled {
    background-color: #95a5a6;
    cursor: not-allowed;
}

#stop-camera {
    background-color: #e74c3c;
}

#stop-camera:hover {
    background-color: #c0392b;
}

#switch-camera {
    background-color: #2ecc71;
}

#switch-camera:hover {
    background-color: #27ae60;
}

#focus-mode {
    background-color: #9b59b6;
}

#focus-mode:hover {
    background-color: #8e44ad;
}

#focus-mode.active {
    background-color: #e74c3c;
}

#focus-mode.active:hover {
    background-color: #c0392b;
}

#capture-image {
    background-color: #f39c12;
}

#capture-image:hover {
    background-color: #e67e22;
}

#retry-permission {
    background-color: #f39c12;
    margin-top: 10px;
}

#retry-permission:hover {
    background-color: #d35400;
}

.return-to-camera-btn {
    display: block;
    margin: 15px auto;
    padding: 10px 20px;
    background-color: #3498db;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.3s;
    font-size: 1rem;
}

.return-to-camera-btn:hover {
    background-color: #2980b9;
}

.camera-container {
    position: relative;
    width: 100%;
    max-width: 640px;
    margin: 0 auto 1rem;
    border-radius: 5px;
    overflow: hidden;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

#camera-feed {
    width: 100%;
    display: block;
}

/* Scanning indicator and animation */
.scan-indicator {
    position: absolute;
    top: 10px;
    right: 10px;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background-color: #e74c3c;
    box-shadow: 0 0 5px rgba(231, 76, 60, 0.7);
    z-index: 20;
}

.scan-indicator.pulse {
    animation: pulse 0.2s ease-out;
}

@keyframes pulse {
    0% {
        transform: scale(1);
        opacity: 1;
    }
    50% {
        transform: scale(1.5);
        opacity: 0.7;
    }
    100% {
        transform: scale(1);
        opacity: 1;
    }
}

/* Scanning animation */
.camera-container::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(to right, transparent, #3498db, transparent);
    animation: scanner-animation 2s linear infinite;
    z-index: 15;
    opacity: 0.7;
}

@keyframes scanner-animation {
    0% {
        top: 0;
    }
    50% {
        top: 100%;
    }
    50.1% {
        top: 0;
    }
    100% {
        top: 100%;
    }
}

/* Enhancement toggle */
.enhancement-toggle-container {
    display: flex;
    align-items: center;
    margin-top: 10px;
    padding: 8px 12px;
    background-color: #f8f9fa;
    border-radius: 5px;
    border-left: 3px solid #3498db;
}

#enhancement-toggle {
    margin-right: 10px;
    width: 18px;
    height: 18px;
    cursor: pointer;
}

.enhancement-toggle-container label {
    font-size: 0.9rem;
    cursor: pointer;
}

/* Debug mode */
.debug-toggle-container {
    background-color: #f8f9fa;
    border-left: 3px solid #e74c3c;
}

.debug-info {
    margin-top: 15px;
    padding: 10px;
    background-color: #2c3e50;
    color: #ecf0f1;
    border-radius: 5px;
    font-family: monospace;
    font-size: 0.85rem;
    max-height: 300px;
    overflow-y: auto;
}

.debug-entry {
    padding: 5px 0;
    border-bottom: 1px solid #34495e;
}

.debug-entry:first-child {
    border-top: 1px solid #34495e;
}

.debug-entry strong {
    color: #3498db;
}

.debug-entry ul {
    margin: 5px 0 5px 20px;
    padding: 0;
    list-style-type: none;
}

.debug-entry li {
    margin: 2px 0;
}

/* Focus mode styles */
.focus-mode-active .camera-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    max-width: none;
    margin: 0;
    z-index: 1000;
    border-radius: 0;
}

.focus-mode-active #camera-feed {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.focus-mode-active .camera-controls {
    position: fixed;
    bottom: 20px;
    left: 0;
    right: 0;
    z-index: 1001;
    background-color: rgba(0, 0, 0, 0.5);
    padding: 10px;
    border-radius: 0;
}

.focus-mode-active .enhancement-toggle-container,
.focus-mode-active .debug-toggle-container {
    display: none;
}

.focus-mode-active #status {
    position: fixed;
    top: 20px;
    left: 0;
    right: 0;
    z-index: 1001;
    background-color: rgba(0, 0, 0, 0.5);
    color: white;
    border-radius: 0;
    text-align: center;
    margin: 0 auto;
    max-width: 80%;
}

.focus-mode-active .scan-indicator {
    width: 16px;
    height: 16px;
}

.focus-mode-active .scan-indicator.pulse {
    animation: focus-pulse 0.2s ease-out;
}

@keyframes focus-pulse {
    0% {
        transform: scale(1);
        opacity: 1;
    }
    50% {
        transform: scale(2);
        opacity: 0.7;
    }
    100% {
        transform: scale(1);
        opacity: 1;
    }
}

@media (max-width: 768px) {
    .container {
        padding: 1rem;
        margin: 1rem;
    }
    
    .preview-section {
        flex-direction: column;
    }
    
    .camera-controls {
        flex-direction: column;
        align-items: center;
    }
    
    .camera-controls button {
        width: 100%;
        max-width: 300px;
    }
}