:root {
    --primary-color: #4a6fa5;
    --secondary-color: #166088;
    --accent-color: #4cb5f5;
    --light-color: #f8f9fa;
    --dark-color: #343a40;
    --success-color: #28a745;
    --danger-color: #dc3545;
    --warning-color: #ffc107;
    --guide-color: #28a745;
}

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

body {
    background-color: #f5f7fa;
    color: var(--dark-color);
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

header {
    text-align: center;
    margin-bottom: 30px;
    padding: 20px 0;
    border-bottom: 1px solid #e1e5eb;
}

h1 {
    color: var(--primary-color);
    margin-bottom: 10px;
    font-size: 2rem;
}

.subtitle {
    color: #6c757d;
    font-size: 1.1rem;
}

.upload-area {
    background-color: white;
    border: 2px dashed #ced4da;
    border-radius: 10px;
    padding: 5px 2.5px;
    text-align: center;
    margin-bottom: 30px;
    transition: all 0.3s ease;
    cursor: pointer;
}

.upload-area:hover, .upload-area.drag-over {
    border-color: var(--accent-color);
    background-color: rgba(76, 181, 245, 0.05);
}

.upload-icon {
    font-size: 48px;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.upload-text {
    margin-bottom: 10px;
}

.btn {
    display: inline-block;
    background-color: var(--primary-color);
    color: white;
    padding: 10px 20px;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.9rem;
    transition: all 0.3s ease;
    margin: 6px 4px;
    font-weight: 500;
}

.btn:hover {
    background-color: var(--secondary-color);
    transform: translateY(-1px);
}

.btn:disabled {
    background-color: #6c757d;
    cursor: not-allowed;
    opacity: 0.6;
    transform: none;
}

.btn:disabled:hover {
    background-color: #6c757d;
    transform: none;
}

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

.btn-success:hover {
    background-color: #218838;
}

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

.btn-warning:hover {
    background-color: #e0a800;
}

.file-info {
    background-color: white;
    border-radius: 10px;
    padding: 15px 20px;
    margin-bottom: 20px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    display: none;
    border-left: 4px solid var(--primary-color);
}

.file-name {
    font-weight: bold;
    margin-bottom: 5px;
    color: var(--primary-color);
    font-size: 1.1rem;
}

.file-size, .page-count {
    color: #6c757d;
    font-size: 0.9rem;
    margin-bottom: 3px;
}

.pdf-viewer-container {
    background-color: white;
    border-radius: 10px;
    padding: 0;
    margin-bottom: 20px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    display: none;
    width: 100%;
    overflow: hidden;
}

.viewer-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
    background-color: #f8f9fa;
    border-bottom: 1px solid #e1e5eb;
    flex-wrap: wrap;
    gap: 15px;
}

.header-left h3 {
    color: var(--primary-color);
    margin: 0;
    font-size: 1.3rem;
}

.column-count {
    color: var(--success-color);
    font-weight: 600;
    font-size: 0.9rem;
    margin-top: 5px;
}

.progress-container {
    margin: 0;
    padding: 15px 20px;
    background-color: #f8f9fa;
    border-bottom: 1px solid #e1e5eb;
    display: none;
}

.progress-bar {
    height: 8px;
    background-color: #e9ecef;
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 8px;
}

.progress {
    height: 100%;
    background: linear-gradient(90deg, var(--accent-color), #2ecc71);
    width: 0%;
    transition: width 0.3s ease;
    border-radius: 4px;
}

.progress-text {
    text-align: center;
    font-size: 0.85rem;
    color: #6c757d;
    font-weight: 500;
}

/* CONTROLS: agora 4 colunas */
.controls-container {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr 1fr;
    gap: 15px;
    padding: 20px;
    background-color: #f8f9fa;
    border-bottom: 1px solid #e1e5eb;
    align-items: start;
}

.panel {
    background-color: white;
    border-radius: 8px;
    padding: 15px;
    border: 1px solid #e1e5eb;
    height: 100%;
}

.panel-header {
    margin-bottom: 12px;
    color: var(--primary-color);
    font-weight: 600;
}

.instructions-box ul {
    margin-left: 20px;
    margin-top: 5px;
}

.instructions-box li {
    margin-bottom: 3px;
    font-size: 0.9rem;
}

.option-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.option-group label {
    display: flex;
    align-items: center;
    cursor: pointer;
    padding: 8px;
    border-radius: 5px;
    transition: background-color 0.2s;
    font-size: 0.9rem;
}

.option-group label:hover {
    background-color: #f8f9fa;
}

.option-group input[type="checkbox"] {
    margin-right: 10px;
    transform: scale(1.1);
}

/* Ações Panel */
.actions-panel {
    display: flex;
    flex-direction: column;
}

.actions-buttons {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.actions-buttons .btn {
    margin: 0;
    width: 100%;
    text-align: center;
}

/* Estatísticas Panel */
.stats-panel {
    display: flex;
    flex-direction: column;
}

.conversion-stats {
    font-size: 0.9rem;
    color: #333;
    line-height: 1.4;
    background-color: #f8f9fa;
    padding: 10px;
    border-radius: 5px;
    border-left: 3px solid var(--success-color);
}

/* PDF area */
.pdf-scroll-container {
    position: relative;
    margin: 0;
    border: none;
    border-radius: 0;
    overflow: auto;
    max-height: 70vh;
    background-color: #f8f9fa;
    width: 100%;
}

.pdf-content {
    position: relative;
    margin: 0 auto;
    background-color: white;
    width: 100% !important;
}

.pdf-page {
    display: block;
    margin: 0 auto;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    border-bottom: 1px solid #e1e5eb;
    width: 100% !important;
    height: auto !important;
    max-width: 100%;
}

.pdf-page:last-child {
    border-bottom: none;
}

.column-guides {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.column-guide {
    position: absolute;
    top: 0;
    width: 3px;
    height: 100%;
    background-color: var(--guide-color);
    cursor: pointer;
    pointer-events: auto;
    transition: all 0.2s ease;
    z-index: 10;
    box-shadow: 0 0 5px rgba(40, 167, 69, 0.5);
}

.column-guide:hover {
    width: 5px;
    background-color: #1e7e34;
    box-shadow: 0 0 8px rgba(30, 126, 52, 0.7);
}

.column-guide.dragging {
    box-shadow: 0 0 15px rgba(40, 167, 69, 0.9) !important;
    width: 4px !important;
}

.guide-label {
    position: absolute;
    top: 10px;
    left: 10px;
    background-color: var(--guide-color);
    color: white;
    padding: 3px 8px;
    border-radius: 4px;
    font-size: 0.7rem;
    white-space: nowrap;
    pointer-events: none;
    font-weight: bold;
}

.result-area {
    background-color: #f8f9fa;
    padding: 15px 20px;
    display: none;
    border-top: 1px solid #e1e5eb;
}

.result-header {
    display: block;
}

.result-title {
    color: var(--success-color);
    margin: 0 0 10px 0;
    font-size: 1.1rem;
}

.error-message {
    background-color: #f8d7da;
    color: var(--danger-color);
    padding: 15px;
    border-radius: 5px;
    margin-top: 20px;
    display: none;
    border-left: 4px solid var(--danger-color);
}

.remove-guide-btn {
    background-color: #dc3545;
    color: white;
    border: none;
    padding: 8px 16px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: bold;
    box-shadow: 0 4px 12px rgba(0,0,0,0.3);
    transition: all 0.2s ease;
    z-index: 10000;
    animation: fadeIn 0.2s ease;
}

.remove-guide-btn:hover {
    background-color: #c82333;
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(0,0,0,0.4);
}

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

.upload-area.drag-over {
    background-color: rgba(76, 181, 245, 0.1);
    border-color: var(--accent-color);
    transform: scale(1.02);
}

.upload-area.drag-over .upload-icon {
    transform: scale(1.1);
    transition: transform 0.3s ease;
}

footer {
    text-align: center;
    margin-top: 40px;
    padding: 20px 0;
    color: #6c757d;
    font-size: 0.9rem;
}

/* Responsivo: ajustar para 2 colunas em telas médias */
@media (max-width: 1024px) {
    .controls-container {
        grid-template-columns: 1fr 1fr;
    }
}

/* Responsivo: ajustar para 1 coluna em telas pequenas */
@media (max-width: 768px) {
    .controls-container {
        grid-template-columns: 1fr;
    }
    
    .btn {
        padding: 8px 12px;
        font-size: 0.8rem;
    }
    
    .actions-buttons .btn {
        width: 100%;
        margin: 2px 0;
    }
}
/* Modal de salvamento */
.save-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    z-index: 10000;
    justify-content: center;
    align-items: center;
}

.save-modal-content {
    background: white;
    padding: 30px;
    border-radius: 15px;
    text-align: center;
    max-width: 400px;
    width: 90%;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    animation: modalSlideIn 0.3s ease-out;
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.save-icon {
    font-size: 48px;
    margin-bottom: 15px;
    animation: pulse 1.5s infinite;
}

@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.1); }
    100% { transform: scale(1); }
}

.save-modal-content h3 {
    color: var(--primary-color);
    margin-bottom: 15px;
    font-size: 1.3rem;
}

.save-progress-bar {
    width: 100%;
    height: 8px;
    background-color: #e9ecef;
    border-radius: 4px;
    overflow: hidden;
    margin: 20px 0;
}

.save-progress {
    height: 100%;
    background: linear-gradient(90deg, var(--accent-color), #2ecc71);
    width: 0%;
    border-radius: 4px;
    animation: saveProgress 2s infinite;
}

@keyframes saveProgress {
    0% { width: 0%; }
    50% { width: 70%; }
    100% { width: 100%; }
}

.save-modal-content p {
    color: #6c757d;
    margin: 0;
    font-size: 0.9rem;
}

/* Modal de download concluído */
.download-complete-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    z-index: 10000;
    justify-content: center;
    align-items: center;
}

.download-complete-content {
    background: white;
    padding: 30px;
    border-radius: 15px;
    text-align: center;
    max-width: 350px;
    width: 90%;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    animation: modalSlideIn 0.3s ease-out;
}

.download-success-icon {
    font-size: 48px;
    margin-bottom: 15px;
    color: var(--success-color);
    animation: successBounce 0.6s ease-out;
}

@keyframes successBounce {
    0% { transform: scale(0.5); opacity: 0; }
    50% { transform: scale(1.2); }
    100% { transform: scale(1); opacity: 1; }
}

.download-complete-content h3 {
    color: var(--success-color);
    margin-bottom: 10px;
    font-size: 1.3rem;
}

.download-complete-content p {
    color: #6c757d;
    margin-bottom: 20px;
    font-size: 0.95rem;
}

#closeDownloadModal {
    margin-top: 10px;
    width: 100px;
}
/* Novos estilos para múltiplos arquivos */
.files-list {
    background-color: white;
    border-radius: 10px;
    padding: 1px 20px;
    margin-bottom: 20px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    display: none;
}

.file-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px;
    border-bottom: 1px solid #e1e5eb;
    transition: background-color 0.2s;
}

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

.file-item:hover {
    background-color: #f8f9fa;
}

.file-item-info {
    flex: 1;
}

.file-item-name {
    font-weight: bold;
    color: var(--primary-color);
}

.file-item-size {
    color: #6c757d;
    font-size: 0.85rem;
}

.file-item-actions {
    display: flex;
    gap: 10px;
}

.file-selector {
    margin-top: 10px;
}

.file-selector label {
    font-weight: 500;
    margin-right: 8px;
}

.file-selector select {
    padding: 6px 10px;
    border: 1px solid #ced4da;
    border-radius: 4px;
    background-color: white;
}

.output-options {
    display: flex;
    flex-direction: column;
}

.download-actions {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-top: 10px;
}

.download-actions .btn {
    margin: 0;
    width: 100%;
    text-align: center;
}

/* Ajuste no container de controles para 4 colunas */
.controls-container {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr 1fr;
    gap: 15px;
    padding: 20px;
    background-color: #f8f9fa;
    border-bottom: 1px solid #e1e5eb;
    align-items: start;
}

/* Responsivo */
@media (max-width: 1024px) {
    .controls-container {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .controls-container {
        grid-template-columns: 1fr;
    }
    
    .file-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }
    
    .file-item-actions {
        width: 100%;
        justify-content: flex-end;
    }
}