/* ==========================================================================
   VARIÁVEIS GLOBAIS - Definição de cores e fundos
   ========================================================================== */
:root {
    --primary-color: #3498db;
    --secondary-color: #2ecc71;
    --text-color: #e0e7ff;
    --dark-bg: #1a1a1a;
}

/* ==========================================================================
   ESTRUTURA BASE - Corpo da página e blocos principais
   ========================================================================== */
body {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    font-family: 'Poppins', sans-serif;
    background: linear-gradient(135deg, #000000, #1a1a1a, #2c2c2c);
    color: var(--text-color);
    margin: 0;
    padding: 0;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    background-attachment: fixed;
}

/* ==========================================================================
   CONTEÚDO PRINCIPAL
   ========================================================================== */
main {
    flex: 1;
    padding: 20px;
}

/* ==========================================================================
   BOTÕES
   ========================================================================== */
.btn {
    background-color: #4f46e5;
    color: #e0e7ff;
    border: none;
    padding: 12px 24px;
    border-radius: 8px;
    cursor: pointer;
    transition: background-color 0.3s, transform 0.2s;
    margin-top: 15px;
    display: inline-block;
}

.btn:hover {
    background-color: #3730a3;
    transform: scale(1.02);
}

/* ==========================================================================
   RODAPÉ
   ========================================================================== */
footer {
    background: linear-gradient(120deg, #0d0d0d 60%, var(--dark-bg));
    background-image: url('../imagens/fundo.jpg');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    background-attachment: fixed;
    color: #fff;
    text-align: center;
    padding: 20px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
    position: relative;
    width: 100%;
    bottom: 0;
    margin-top: 40px;
}

/* ==========================================================================
   RESPONSIVIDADE
   ========================================================================== */
@media (min-width: 1200px) {
    body {
        padding: 0 20px;
    }

    header, footer, main {
        max-width: 1200px;
        margin: 0 auto;
    }

    section {
        margin-bottom: 2rem;
        padding: 0 20px;
    }
}

@media (max-width: 768px) {
    header h1 {
        font-size: 2em;
    }

    header p {
        font-size: 1em;
    }

    .btn {
        padding: 10px 20px;
    }
}

@media (max-width: 480px) {
    header, footer {
        padding: 15px;
    }

    main {
        padding: 15px;
    }
}

/* ==========================================================================
   NAVEGAÇÃO
   ========================================================================== */
.nav-principal {
    position: sticky;
    top: 0;
    background-color: rgba(20, 20, 20, 0.85);
    padding: 12px 0;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
    z-index: 100;
    text-align: center;
    backdrop-filter: blur(5px);
}

.nav-container {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 15px;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

.nav-item {
    color: #fff;
    text-decoration: none;
    padding: 8px 15px;
    border-radius: 25px;
    font-weight: 500;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 5px;
    background-color: rgba(255, 255, 255, 0.1);
}

.nav-item i {
    font-size: 1.1em;
}

.nav-item:hover {
    background-color: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
}


@media (max-width: 768px) {
    .nav-container {
        gap: 8px;
    }

    .nav-item {
        padding: 6px 10px;
        font-size: 0.9em;
    }
}

@media (max-width: 480px) {
    .nav-container {
        flex-direction: row;
        overflow-x: auto;
        justify-content: flex-start;
        padding-bottom: 5px;
    }

    .nav-principal {
        padding: 8px 0;
    }
}