/* Estilos Gerais */
body {
    background-color: #f8f9fa;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

.main-content {
    flex: 1;
    padding: 2rem 0;
}

/* Header */
.header {
    background: linear-gradient(135deg, #343a40, #212529);
    color: white;
    padding: 2rem 0;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.navbar-brand {
    padding: 0;
    display: block;
    text-align: center;
    width: 100%;
    margin-bottom: 1rem;
}

.navbar-brand img {
    max-height: 200px;
    width: auto;
    margin: 0 auto;
}

#navbarNav {
    justify-content: center;
}

.navbar-nav {
    flex-direction: row;
    gap: 1rem;
}

.nav-link {
    color: white !important;
    font-weight: 500;
    padding: 0.5rem 1rem !important;
    transition: all 0.3s ease;
    font-size: 1.1rem;
    text-align: center;
}

.nav-link:hover {
    background-color: rgba(0,0,0,0.2);
    border-radius: 5px;
}

/* Área de Upload */
.upload-area {
    margin: 2rem 0;
}

.card {
    border: 1px solid #dee2e6;
    border-radius: 8px;
    box-shadow: none;
    margin-bottom: 1rem;
}

.card-body {
    padding: 1.5rem;
}

.card-title {
    color: #212529;
    font-size: 1.25rem;
    font-weight: 500;
    margin-bottom: 1.5rem;
}

.card-title i {
    margin-right: 0.5rem;
}

.drag-area {
    border: 3px dashed #565f68a8;
    border-radius: 8px;
    padding: 2rem;
    text-align: center;
    background: #fff;
    min-height: 200px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    cursor: pointer;
}

.drag-area.active {
    border-color: #28a745;
    background: #f8f9fa;
}

.drag-area i {
    font-size: 3rem;
    color: #6c757d;
    margin-bottom: 1rem;
}

.drag-area h3 {
    font-size: 1.1rem;
    color: #495057;
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.drag-area p {
    color: #6c757d;
    margin: 0.5rem 0;
}

.btn-secondary {
    background-color: #6c757d;
    border-color: #6c757d;
    color: white;
    padding: 0.5rem 1rem;
}

.btn-secondary:hover {
    background-color: #5a6268;
    border-color: #545b62;
}

.btn-success {
    background-color: #28a745;
    border-color: #28a745;
    padding: 0.5rem 1.5rem;
    font-weight: 500;
}

.btn-success:hover {
    background-color: #218838;
    border-color: #1e7e34;
}

.file-list {
    margin-top: 1rem;
    max-height: 150px;
    overflow-y: auto;
}

.file-item {
    display: flex;
    align-items: center;
    padding: 0.5rem;
    border: 1px solid #dee2e6;
    border-radius: 4px;
    margin-bottom: 0.5rem;
    background: #fff;
}

.file-item i {
    margin-right: 0.5rem;
    color: #6c757d;
}

.file-item .file-name {
    flex-grow: 1;
    margin-right: 0.5rem;
    color: #495057;
}

.file-item .file-remove {
    color: #dc3545;
    cursor: pointer;
    padding: 0.25rem;
}

.file-item .file-remove:hover {
    color: #c82333;
}

.chave-area {
    padding: 0;
}

.form-group label {
    font-weight: 500;
    color: #212529;
    margin-bottom: 0.5rem;
}

.form-control {
    border: 1px solid #ced4da;
    border-radius: 4px;
    padding: 0.75rem;
    font-size: 1rem;
    margin-bottom: 0.5rem;
}

.form-text {
    color: #6c757d;
    font-size: 0.875rem;
}

/* Features Section */
.features {
    padding: 2rem 0;
    background-color: white;
    margin-bottom: 2rem;
}

.feature-card {
    text-align: center;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 0 15px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
    height: 100%;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 20px rgba(0,0,0,0.15);
}

.feature-icon {
    font-size: 3rem;
    color: #343a40;
    margin-bottom: 1rem;
    transition: color 0.3s ease;
}

.feature-card:hover .feature-icon {
    color: #212529;
}

/* Footer */
.footer {
    background-color: #343a40;
    color: white;
    padding: 3rem 0 1rem;
    margin-top: auto;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    flex-wrap: wrap;
    gap: 2rem;
}

.footer-brand {
    flex: 1;
    min-width: 250px;
}

.footer-logo {
    max-width: 250px;
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.footer-links a {
    color: white;
    text-decoration: none;
    transition: color 0.3s ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.footer-links a:hover {
    color: #adb5bd;
}

.footer-social {
    display: flex;
    gap: 1rem;
}

.footer-social a {
    color: white;
    font-size: 1.5rem;
    transition: color 0.3s ease;
}

.footer-social a:hover {
    color: #adb5bd;
}

.footer-bottom {
    text-align: center;
    margin-top: 2rem;
    padding-top: 1rem;
    border-top: 1px solid rgba(255,255,255,0.1);
}

/* Responsividade */
@media (max-width: 768px) {
    .footer-content {
        flex-direction: column;
        text-align: center;
    }
    
    .footer-links {
        align-items: center;
    }
    
    .footer-social {
        justify-content: center;
    }
}