/* Reset e configurações básicas */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    color: #333;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
}

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

/* Header */
.cabecalho {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
    padding: 2rem 0;
    text-align: center;
}

.cabecalho-conteudo {
    color: white;
}

.titulo-principal {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
}

.titulo-principal i {
    color: #ffd700;
    font-size: 2.5rem;
}

.subtitulo {
    font-size: 1.2rem;
    opacity: 0.9;
    font-weight: 300;
}

/* Seção de filtros */
.secao-filtros {
    background: rgba(255, 255, 255, 0.95);
    padding: 2rem 0;
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
}

.filtros {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 1rem;
    flex-wrap: wrap;
}

.botao-filtro {
    background: white;
    border: 2px solid #e0e0e0;
    padding: 0.8rem 1.5rem;
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: #666;
}

.botao-filtro:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    border-color: #667eea;
}

.botao-filtro.ativo {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border-color: transparent;
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.4);
}

.contador-certificados {
    text-align: center;
    color: #666;
    font-weight: 500;
}

/* Seção principal */
.secao-principal {
    padding: 3rem 0;
}

.grid-certificados {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 2rem;
}

/* Cartões de certificados */
.cartao-certificado {
    background: white;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    position: relative;
}

.cartao-certificado:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.cartao-header {
    padding: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
}

.icone-categoria {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: white;
}

.icone-categoria.rocketseat {
    background: linear-gradient(135deg, #8257e5 0%, #996dff 100%);
}

.icone-categoria.python {
    background: linear-gradient(135deg, #3776ab 0%, #ffd43b 100%);
}

.icone-categoria.genericos {
    background: linear-gradient(135deg, #28a745 0%, #20c997 100%);
}

.badge-categoria {
    background: rgba(102, 126, 234, 0.1);
    color: #667eea;
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}

.cartao-conteudo {
    padding: 1.5rem;
}

.titulo-certificado {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 0.8rem;
    color: #333;
}

.descricao-certificado {
    color: #666;
    margin-bottom: 1rem;
    line-height: 1.5;
}

.detalhes-certificado {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.detalhe {
    display: flex;
    align-items: center;
    gap: 0.3rem;
    color: #888;
    font-size: 0.9rem;
}

.detalhe i {
    color: #667eea;
}

.cartao-acoes {
    padding: 1rem 1.5rem;
    background: #f8f9fa;
    display: flex;
    gap: 1rem;
}

.botao-visualizar {
    flex: 1;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    padding: 0.8rem 1rem;
    border-radius: 10px;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.botao-visualizar:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.4);
}

.botao-download {
    background: white;
    color: #667eea;
    border: 2px solid #667eea;
    padding: 0.8rem;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.botao-download:hover {
    background: #667eea;
    color: white;
    transform: translateY(-2px);
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(5px);
}

.modal-conteudo {
    background: white;
    margin: 2% auto;
    width: 90%;
    max-width: 900px;
    height: 90%;
    border-radius: 20px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.modal-header {
    padding: 1.5rem;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h3 {
    margin: 0;
    font-weight: 600;
}

.botao-fechar {
    background: none;
    border: none;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 50%;
    transition: background 0.3s ease;
}

.botao-fechar:hover {
    background: rgba(255, 255, 255, 0.2);
}

.modal-corpo {
    flex: 1;
    padding: 0;
}

#frameCertificado {
    width: 100%;
    height: 100%;
    border: none;
}

/* Footer */
.rodape {
    background: rgba(0, 0, 0, 0.8);
    color: white;
    text-align: center;
    padding: 2rem 0;
    margin-top: 3rem;
}

/* Animações */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.cartao-certificado {
    animation: fadeIn 0.6s ease forwards;
}

/* Estados de filtro */
.cartao-certificado.oculto {
    display: none;
}

/* Responsividade */
@media (max-width: 768px) {
    .titulo-principal {
        font-size: 2rem;
        flex-direction: column;
        gap: 0.5rem;
    }

    .filtros {
        justify-content: center;
        gap: 0.5rem;
    }

    .botao-filtro {
        padding: 0.6rem 1rem;
        font-size: 0.9rem;
    }

    .grid-certificados {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .cartao-acoes {
        flex-direction: column;
    }

    .modal-conteudo {
        width: 95%;
        height: 95%;
        margin: 2.5% auto;
    }

    .detalhes-certificado {
        flex-direction: column;
        gap: 0.5rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }

    .cabecalho {
        padding: 1.5rem 0;
    }

    .titulo-principal {
        font-size: 1.8rem;
    }

    .subtitulo {
        font-size: 1rem;
    }

    .secao-filtros {
        padding: 1.5rem 0;
    }

    .secao-principal {
        padding: 2rem 0;
    }
}