/* Bionic Reading Converter Styles */
.brc-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen-Sans, Ubuntu, Cantarell, sans-serif;
    box-sizing: border-box;
}

/* Upload Section */
.brc-upload-section {
    background: #f8f9fa;
    padding: 25px;
    border-radius: 10px;
    margin-bottom: 25px;
    border: 2px dashed #dee2e6;
    text-align: center;
}

.brc-upload-section h3 {
    margin: 0 0 15px 0;
    color: #495057;
    font-size: 1.3em;
}

.brc-file-input {
    margin: 15px 0;
    padding: 10px;
    border: 2px solid #ced4da;
    border-radius: 5px;
    background: white;
    width: 100%;
    max-width: 400px;
    box-sizing: border-box;
}

.brc-file-info {
    color: #6c757d;
    font-size: 0.9em;
    margin: 10px 0 0 0;
}

/* Controls Section */
.brc-controls {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 25px;
    margin-bottom: 25px;
    background: #f8f9fa;
    padding: 20px;
    border-radius: 8px;
}

.brc-control-group {
    display: flex;
    flex-direction: column;
}

.brc-control-group label {
    font-weight: 600;
    margin-bottom: 8px;
    color: #495057;
    font-size: 0.95em;
}

.brc-select {
    padding: 10px 12px;
    border: 2px solid #ced4da;
    border-radius: 6px;
    font-size: 14px;
    background: white;
    transition: border-color 0.3s ease;
}

.brc-select:focus {
    outline: none;
    border-color: #007cba;
}

/* Text Areas Section - FIXED LAYOUT */
.brc-text-areas {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 25px;
    margin-bottom: 25px;
    align-items: stretch;
    min-height: 400px;
}

.brc-textarea-group {
    display: flex;
    flex-direction: column;
    height: 100%;
    min-height: 400px;
}

.brc-textarea-group label {
    font-weight: 600;
    margin-bottom: 10px;
    color: #495057;
    font-size: 1em;
}

.brc-textarea {
    width: 100%;
    min-height: 400px;
    height: 400px;
    padding: 15px;
    border: 2px solid #ced4da;
    border-radius: 6px;
    font-size: 14px;
    line-height: 1.6;
    resize: vertical;
    font-family: monospace;
    box-sizing: border-box;
    background: white;
    transition: border-color 0.3s ease;
}

.brc-textarea:focus {
    outline: none;
    border-color: #007cba;
}

.brc-output-area {
    width: 100%;
    min-height: 400px;
    height: 400px;
    max-height: 600px;
    padding: 15px;
    border: 2px solid #e9ecef;
    border-radius: 6px;
    background: #f8f9fa;
    font-size: 14px;
    line-height: 1.6;
    overflow-y: auto;
    box-sizing: border-box;
    word-wrap: break-word;
}

/* Ensure consistent scrolling */
.brc-textarea, .brc-output-area {
    resize: none;
    overflow-y: auto;
}

.brc-output-area::-webkit-scrollbar {
    width: 8px;
}

.brc-output-area::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 4px;
}

.brc-output-area::-webkit-scrollbar-thumb {
    background: #c1c1c1;
    border-radius: 4px;
}

.brc-output-area::-webkit-scrollbar-thumb:hover {
    background: #a8a8a8;
}

/* Buttons Section */
.brc-buttons {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 12px;
    margin-bottom: 20px;
}

.brc-btn {
    padding: 12px 20px;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 600;
    transition: all 0.3s ease;
    text-align: center;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 44px;
}

.brc-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none !important;
}

.brc-btn-primary {
    background: #007cba;
    color: white;
}

.brc-btn-primary:hover:not(:disabled) {
    background: #005a87;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 124, 186, 0.3);
}

.brc-btn-secondary {
    background: #6c757d;
    color: white;
}

.brc-btn-secondary:hover:not(:disabled) {
    background: #545b62;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(108, 117, 125, 0.3);
}

.brc-btn-success {
    background: #28a745;
    color: white;
}

.brc-btn-success:hover:not(:disabled) {
    background: #1e7e34;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(40, 167, 69, 0.3);
}

/* Export Dropdown */
.brc-export-dropdown {
    position: relative;
    display: inline-block;
}

.brc-export-menu {
    display: none;
    position: absolute;
    background: white;
    box-shadow: 0 4px 15px rgba(0,0,0,0.15);
    border-radius: 6px;
    z-index: 1000;
    min-width: 220px;
    top: 100%;
    left: 0;
    margin-top: 5px;
    border: 1px solid #e0e0e0;
}

.brc-export-menu.show {
    display: block;
    animation: fadeInDown 0.2s ease-in-out;
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.brc-export-item {
    padding: 12px 15px;
    cursor: pointer;
    border-bottom: 1px solid #f0f0f0;
    transition: background-color 0.2s;
    font-size: 14px;
    color: #495057;
}

.brc-export-item:hover {
    background: #f8f9fa;
}

.brc-export-item:last-child {
    border-bottom: none;
}

/* Bionic Reading Output Styles */
.brc-output {
    line-height: 1.8;
    font-size: 14px;
    word-wrap: break-word;
    overflow-wrap: break-word;
}

.brc-output strong {
    font-weight: 700;
}

.brc-contrast-none strong {
    color: inherit;
}

.brc-contrast-low strong {
    color: #2c5282;
}

.brc-contrast-medium strong {
    color: #2b6cb0;
}

.brc-contrast-high strong {
    color: #3182ce;
}

.brc-placeholder {
    color: #6c757d;
    text-align: center;
    padding: 50px 20px;
    font-style: italic;
}

/* Fullscreen Modal */
.brc-fullscreen-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: white;
    z-index: 9999;
    padding: 60px 20px 20px 20px;
    overflow: auto;
    box-sizing: border-box;
}

.brc-fullscreen-content {
    max-width: 800px;
    margin: 0 auto;
    padding: 40px;
    line-height: 1.8;
    font-size: 18px;
    background: white;
}

.brc-close-fullscreen {
    position: fixed;
    top: 20px;
    right: 20px;
    background: #495057;
    color: white;
    border: none;
    padding: 12px 18px;
    border-radius: 6px;
    cursor: pointer;
    z-index: 10000;
    font-size: 14px;
    font-weight: 600;
    transition: background-color 0.3s ease;
}

.brc-close-fullscreen:hover {
    background: #343a40;
}

/* Login Required Section */
.brc-login-required {
    text-align: center;
    padding: 60px 40px;
    background: #f8f9fa;
    border-radius: 10px;
    border: 2px dashed #dee2e6;
}

.brc-login-required h3 {
    color: #495057;
    margin-bottom: 15px;
    font-size: 1.5em;
}

.brc-login-required p {
    color: #6c757d;
    margin-bottom: 25px;
    font-size: 1.1em;
    line-height: 1.6;
}

/* Messages */
.brc-message {
    padding: 12px 15px;
    border-radius: 6px;
    margin: 15px 0;
    font-size: 14px;
    border: 1px solid transparent;
}

.brc-success {
    background: #d4edda;
    color: #155724;
    border-color: #c3e6cb;
}

.brc-error {
    background: #f8d7da;
    color: #721c24;
    border-color: #f5c6cb;
}

/* Loading Spinner */
.brc-loading {
    display: inline-block;
    width: 16px;
    height: 16px;
    border: 2px solid #f3f3f3;
    border-top: 2px solid #007cba;
    border-radius: 50%;
    animation: brc-spin 1s linear infinite;
    margin-right: 8px;
}

@keyframes brc-spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Responsive Design */
@media (max-width: 968px) {
    .brc-container {
        padding: 15px;
    }
    
    .brc-controls {
        grid-template-columns: 1fr;
        gap: 15px;
        padding: 15px;
    }
    
    .brc-text-areas {
        grid-template-columns: 1fr;
        gap: 20px;
        min-height: auto;
    }
    
    .brc-textarea,
    .brc-output-area {
        min-height: 300px;
        height: 300px;
    }
    
    .brc-buttons {
        grid-template-columns: 1fr;
        gap: 10px;
    }
    
    .brc-export-menu {
        left: 50%;
        transform: translateX(-50%);
        min-width: 200px;
    }
}

@media (max-width: 480px) {
    .brc-container {
        padding: 10px;
    }
    
    .brc-upload-section {
        padding: 15px;
    }
    
    .brc-controls {
        padding: 10px;
    }
    
    .brc-textarea,
    .brc-output-area {
        min-height: 250px;
        height: 250px;
        padding: 10px;
        font-size: 13px;
    }
    
    .brc-btn {
        padding: 10px 15px;
        font-size: 13px;
        min-height: 40px;
    }
    
    .brc-fullscreen-content {
        padding: 20px 15px;
        font-size: 16px;
    }
}

/* Print Styles */
@media print {
    .brc-container {
        padding: 0;
        margin: 0;
    }
    
    .brc-btn,
    .brc-controls,
    .brc-upload-section {
        display: none;
    }
    
    .brc-text-areas {
        grid-template-columns: 1fr;
    }
}