/* Base Styles */
:root {
    --primary-color: #4285f4;
    --success-color: #34a853;
    --danger-color: #ea4335;
    --light-gray: #f5f5f5;
    --medium-gray: #e0e0e0;
    --dark-gray: #757575;
    --white: #ffffff;
    --shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    --border-radius: 8px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
}

body {
    background-color: var(--white);
    color: #333;
    line-height: 1.6;
}

/* Scanner App Layout */
.scanner-app {
    max-width: 900px;
    margin: 0 auto;
    padding: 20px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.app-header {
    text-align: center;
    margin-bottom: 30px;
    padding: 20px 0;
}

.app-header h1 {
    font-size: 2.2rem;
    color: #444;
    margin-bottom: 8px;
    font-weight: 600;
}

.app-header p {
    color: var(--dark-gray);
    font-size: 1rem;
}

/* Scanner Preview */
.scanner-container {
    background-color: var(--white);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    padding: 20px;
    margin-bottom: 20px;
    flex-grow: 1;
}

.scanner-preview {
    width: 100%;
    background-color: var(--light-gray);
    border-radius: var(--border-radius);
    overflow: hidden;
    position: relative;
    aspect-ratio: 4/3;
    margin-bottom: 20px;
    border: 1px solid var(--medium-gray);
}

.scanner-preview video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* Scanned Pages */
.scanned-pages {
    min-height: 120px;
    padding: 15px;
    background-color: var(--white);
    border-radius: var(--border-radius);
    border: 1px dashed var(--medium-gray);
    margin-bottom: 20px;
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    align-items: center;
    justify-content: center;
}

.scanned-pages .empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: 100%;
    padding: 20px;
    color: var(--dark-gray);
}

.scanned-pages .empty-state p {
    margin-top: 10px;
    font-size: 0.9rem;
}

.scanned-pages img {
    height: 120px;
    border-radius: 4px;
    box-shadow: var(--shadow);
    object-fit: cover;
    border: 1px solid var(--medium-gray);
}

/* Buttons */
.scanner-controls {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.control-buttons, .action-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
}

.btn {
    padding: 12px 20px;
    border: none;
    border-radius: var(--border-radius);
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 0.95rem;
    gap: 8px;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.btn:active {
    transform: translateY(0);
}

.camera-btn {
    background-color: var(--primary-color);
    color: var(--white);
}

.capture-btn {
    background-color: #5f6368;
    color: var(--white);
}

.upload-btn {
    background-color: var(--white);
    color: #5f6368;
    border: 1px solid var(--medium-gray);
}

.pdf-btn {
    background-color: var(--success-color);
    color: var(--white);
}

.reset-btn {
    background-color: var(--danger-color);
    color: var(--white);
}

/* Footer */
.app-footer {
    text-align: center;
    padding: 15px;
    color: var(--dark-gray);
    font-size: 0.85rem;
    margin-top: auto;
}

/* Responsive Design */
@media (max-width: 768px) {
    .scanner-app {
        padding: 15px;
    }
    
    .app-header h1 {
        font-size: 1.8rem;
    }
    
    .btn {
        padding: 10px 15px;
        font-size: 0.9rem;
    }
    
    .scanned-pages {
        min-height: 100px;
    }
    
    .scanned-pages img {
        height: 100px;
    }
}

@media (max-width: 480px) {
    .control-buttons, .action-buttons {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
    }
}