/* Reset e estilos base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f8f9fa;
}

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

/* Cabeçalhos */
h1, h2, h3 {
    color: #2c3e50;
    margin-bottom: 15px;
}

h1 {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 30px;
}

h2 {
    font-size: 1.8rem;
    border-bottom: 2px solid #e7e7e7;
    padding-bottom: 10px;
    margin-bottom: 20px;
}

h3 {
    font-size: 1.2rem;
}

/* Botões */
.btn {
    display: inline-block;
    background-color: #3498db;
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 5px;
    cursor: pointer;
    text-decoration: none;
    font-size: 1rem;
    transition: background-color 0.3s, transform 0.1s;
}

.btn:hover {
    background-color: #2980b9;
    transform: translateY(-2px);
}

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

/* Formulários */
.form-group {
    margin-bottom: 20px;
}

label {
    display: block;
    margin-bottom: 5px;
    font-weight: 600;
}

input[type="file"] {
    display: block;
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 5px;
    background-color: #f8f8f8;
}

.help-text {
    font-size: 0.8rem;
    color: #777;
    margin-top: 5px;
}

/* Mensagens de alerta */
.alert {
    padding: 10px 15px;
    border-radius: 5px;
    margin-bottom: 20px;
}

.alert-success {
    background-color: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.alert-error {
    background-color: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

/* Seções da página inicial */
.upload-section, .images-section {
    background-color: white;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    padding: 25px;
    margin-bottom: 30px;
}

/* Grid de imagens */
.images-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
}

.image-card {
    background-color: white;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s;
}

.image-card:hover {
    transform: translateY(-5px);
}

.image-preview {
    height: 200px;
    overflow: hidden;
}

.image-preview img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.image-info {
    padding: 15px;
}

.image-info h3 {
    margin-bottom: 5px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.image-info p {
    color: #666;
    margin-bottom: 10px;
    font-size: 0.9rem;
}

/* Footer */
footer {
    background-color: #2c3e50;
    color: white;
    padding: 20px 0;
    text-align: center;
    margin-top: 40px;
}

/* Responsividade */
@media screen and (max-width: 768px) {
    .container {
        padding: 15px;
    }
    
    h1 {
        font-size: 2rem;
    }
    
    .images-grid {
        grid-template-columns: 1fr;
    }
}