:root {
    --primary-color: #3498db;
    --secondary-color: #2c3e50;
    --success-color: #27ae60;
    --error-color: #e74c3c;
    --warning-color: #f1c40f;
    --light-gray: #f5f5f5;
    --medium-gray: #ddd;
    --dark-gray: #333;
    --white-color: #fff;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: var(--light-gray);
    color: var(--dark-gray);
    line-height: 1.4;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    height: 100vh;
}

.toolbar {
    background: linear-gradient(135deg, var(--secondary-color) 0%, #34495e 100%);
    color: var(--white-color);
    padding: 15px 20px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 15px;
    flex-shrink: 0;
}

.toolbar h1 {
    font-size: 1.8em;
    font-weight: 600;
}

.toolbar-actions {
    display: flex;
    gap: 10px;
    align-items: center;
    flex-wrap: wrap;
}

.main-container {
    display: flex;
    flex-grow: 1;
    overflow: hidden;
}

.left-panel {
    width: 350px;
    flex-shrink: 0;
    background: #fafafa;
    border-right: 1px solid var(--medium-gray);
    display: flex;
    flex-direction: column;
    overflow-y: auto;
}

.panel-section {
    padding: 20px;
    border-bottom: 1px solid #eee;
}

.panel-section h3 {
    margin-bottom: 15px;
    color: var(--secondary-color);
    font-size: 1.1em;
}

.connection-status {
    display: flex;
    align-items: center;
    margin-bottom: 15px;
    padding: 10px;
    background: var(--white-color);
    border-radius: 8px;
    border: 1px solid var(--medium-gray);
}

.status-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    margin-right: 10px;
    transition: background-color 0.3s;
}

.status-connected {
    background: var(--success-color);
    box-shadow: 0 0 10px rgba(39, 174, 96, 0.5);
}

.status-disconnected {
    background: var(--error-color);
}

.force-control {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-top: 10px;
}

.force-control input {
    width: 60px;
    padding: 8px;
    border: 1px solid var(--medium-gray);
    border-radius: 4px;
    text-align: center;
}

.manual-controls {
    display: grid;
    grid-template-columns: repeat(3, 50px);
    gap: 10px;
    justify-content: center;
    margin-top: 10px;
}

.manual-controls .btn {
    width: 50px;
    height: 50px;
    padding: 0;
    font-size: 20px;
}

#jog-y-pos-btn {
    grid-column: 2;
    grid-row: 1;
}

#jog-x-neg-btn {
    grid-column: 1;
    grid-row: 2;
}

#test-dot-btn {
    grid-column: 2;
    grid-row: 2;
}

#jog-x-pos-btn {
    grid-column: 3;
    grid-row: 2;
}

#jog-y-neg-btn {
    grid-column: 2;
    grid-row: 3;
}

.right-container {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    background: var(--light-gray);
    overflow: hidden;
}

.preview-header {
    background: var(--white-color);
    padding: 15px 20px;
    border-bottom: 1px solid var(--medium-gray);
    display: flex;
    justify-content: flex-end;
    /* Changed */
    align-items: center;
    flex-shrink: 0;
    gap: 15px;
}

.preview-titles {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    padding: 10px 30px 0 30px;
    font-weight: 600;
    color: var(--secondary-color);
    background: var(--light-gray);
    flex-shrink: 0;
}

.page-navigation {
    display: flex;
    align-items: center;
    gap: 10px;
}

.page-info {
    font-weight: 600;
    color: var(--secondary-color);
}

.editor-container {
    flex-grow: 1;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    overflow: auto;
    padding: 20px;
}

.preview-wrapper {
    position: relative;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.preview-actions {
    position: absolute;
    top: 15px;
    right: 15px;
    z-index: 10;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.btn-icon {
    background: #f0f0f0;
    color: var(--secondary-color);
    border: 1px solid #ccc;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    font-size: 18px;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-icon:hover:not(:disabled) {
    background: #e0e0e0;
    border-color: #bbb;
    transform: scale(1.05);
}

.btn-icon:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    background: #f8f8f8;
}

.editor-page,
.preview-page {
    background: var(--white-color);
    border: 1px solid var(--medium-gray);
    border-radius: 4px;
    padding: 15px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    font-size: 14px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.editor-page textarea {
    width: 100%;
    flex-grow: 1;
    border: none;
    outline: none;
    resize: none;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    font-size: 14px;
}

.preview-page {
    font-family: 'Courier New', 'DejaVu Sans Mono', monospace;
    font-size: 16px;
    line-height: 1.5;
    letter-spacing: 2px;
    padding-right: 60px;
    
    /* ALTERAÇÃO 1: Mude de 'pre-wrap' para 'pre' */
    /* Isso força o navegador a obedecer estritamente os 35 caracteres do servidor */
    white-space: pre; 
    
    /* ALTERAÇÃO 2: Mude de 'overflow-y' para 'overflow' */
    /* Isso cria uma barra de rolagem horizontal se a linha for muito longa */
    overflow: auto; 
    
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.braille-char {
    position: relative;
    display: inline-block;
    cursor: default;
    padding: 2px;
}

.braille-bordered .braille-char {
    border: 1px dotted var(--medium-gray);
    margin: -1px;
    /* Compensate for border */
}

#braille-tooltip {
    position: fixed;
    display: none;
    background-color: var(--secondary-color);
    color: var(--white-color);
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 14px;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    white-space: nowrap;
    z-index: 2100;
    pointer-events: none;
    letter-spacing: normal;
    transition: opacity 0.1s ease;
}


.btn {
    padding: 10px 20px;
    border: none;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

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

.btn-primary:hover:not(:disabled) {
    background: #2980b9;
    transform: translateY(-1px);
}

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

.btn-success:hover:not(:disabled) {
    background: #229954;
    transform: translateY(-1px);
}

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

.btn-danger:hover:not(:disabled) {
    background: #c0392b;
    transform: translateY(-1px);
}

.btn-warning {
    background: var(--warning-color);
    color: var(--dark-gray);
}

.btn-warning:hover:not(:disabled) {
    background: #f39c12;
    transform: translateY(-1px);
}

.btn-secondary {
    background: #95a5a6;
    color: var(--white-color);
}

.btn-secondary:hover:not(:disabled) {
    background: #7f8c8d;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none !important;
}

.btn-small {
    padding: 6px 12px;
    font-size: 12px;
}

.progress-container {
    margin-top: 15px;
    display: none;
}

.progress-bar {
    width: 100%;
    height: 8px;
    background: #ecf0f1;
    border-radius: 4px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-color), var(--success-color));
    transition: width 0.1s ease-out;
    border-radius: 4px;
}

.progress-text {
    margin-top: 8px;
    font-size: 13px;
    color: #666;
    text-align: center;
}

.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(5px);
    align-items: center;
    justify-content: center;
}

.modal-content {
    background: var(--white-color);
    padding: 30px;
    border-radius: 12px;
    max-width: 500px;
    text-align: center;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
    animation: modalSlideIn 0.3s ease;
}

@keyframes modalSlideIn {
    from {
        transform: translateY(-30px);
        opacity: 0;
    }

    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.modal h3 {
    margin-bottom: 15px;
    color: var(--secondary-color);
    font-size: 1.5em;
}

.modal p {
    margin-bottom: 25px;
    line-height: 1.6;
    font-size: 1.1em;
}

#alert-container {
    position: fixed;
    top: 80px;
    right: 20px;
    z-index: 2000;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.alert {
    padding: 15px 20px;
    border-radius: 8px;
    font-size: 14px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    animation: alertSlideIn 0.3s ease;
    opacity: 0;
    transform: translateX(20px);
    animation-fill-mode: forwards;
}

@keyframes alertSlideIn {
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.alert-success {
    background: #d4edda;
    color: #155724;
    border-left: 5px solid var(--success-color);
}

.alert-error {
    background: #f8d7da;
    color: #721c24;
    border-left: 5px solid var(--error-color);
}

.alert-info {
    background: #cce7ff;
    color: #004085;
    border-left: 5px solid var(--primary-color);
}

.stats-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    margin-bottom: 15px;
}

.stat-item {
    background: var(--white-color);
    padding: 10px;
    border-radius: 6px;
    border: 1px solid var(--medium-gray);
    text-align: center;
}

.stat-value {
    font-size: 18px;
    font-weight: 700;
    color: var(--secondary-color);
}

.stat-label {
    font-size: 12px;
    color: #666;
    margin-top: 2px;
}