:root {
    --header-bg: #001f3f;
    --header-text: #ffffff;
    --primary: #1e3a8a;
    --secondary: #3b82f6;
    --bg: #f3f4f6;
    --card-bg: #ffffff;
    --text-main: #1f2937;
    --text-light: #6b7280;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}


body {
    background-color: var(--bg);
    color: var(--text-main);
    min-height: 100vh;
    line-height: 1.6;
}

a {
    text-decoration: none;
    color: inherit;
}

img {
    max-width: 100%;
    display: block;
}

.main-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background-color: var(--header-bg);
    color: var(--header-text);
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.2);
    padding: 10px 0;
    margin-bottom: 0;
    height: auto;
    width: 100%;
    display: block;
}

.brand {
    display: flex;
    align-items: center;
    gap: 15px;
    text-decoration: none;
    height: 100%;
}

.brand img {
    height: 50px;
    width: auto;
    filter: brightness(0) invert(1);
}

.header-nav {
    display: flex;
    align-items: center;
    gap: 20px;
    height: 100%;
}

.nav-link {
    font-family: "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    color: white;
    font-weight: 600;
    font-size: 1rem;
    text-decoration: none;
    letter-spacing: 0.5px;
    transition: opacity 0.2s;
}

.nav-link:hover {
    opacity: 0.8;
}

.nav-separator {
    color: white;
    font-family: "Times New Roman", Times, serif;
    font-size: 1.3rem;
    font-weight: 400;
    margin-top: -3px;
    opacity: 0.8;
}

/*MENU PARA CELULAR*/
.mobile-menu-button,
.mobile-menu {
    display: none;
}

/*FOOTER*/
.main-footer {
    display: block;
    width: 100%;
    padding: 20px;
}

.container-limit {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/*RESPONSIVE*/

@media (max-width:900px) {
    .header-nav {
        display: none;
    }

    .mobile-menu-button {
        display:block;background:transparent;border:none;
        color:white;font-size:1.8rem;cursor:pointer;padding:5px;
        margin-left:auto;
    }

    .mobile-menu {
        position:fixed;top:0;left:0;width:100%;height:100vh;
        background-color:rgba(0,31,63,0.98);z-index:3000;display:none;
        flex-direction:column;align-items:center;justify-content:center;
    }

    .mobile-menu-content {
        width:100%;height:100%;display:flex;flex-direction:column;
        align-items:center;justify-content:center;position:relative;
    }

    .mobile-menu.active {
        display:flex;animation:fadeIn 0.3s ease;
    }

    .close-menu-button {
        position:absolute;top:20px;right:30px;background:none;border:none;
        color:white;font-size:3rem;cursor:pointer;line-height:1;
    }

    .mobile-nav-list {
        display:flex;flex-direction:column;gap:25px;text-align:center;
    }

    .mobile-link {
        color:white;font-size:1.5rem;font-weight:600;text-decoration:none;
        transition:color 0.3s;
    }

    .mobile-link:hover {
        color: #3b82f6;
    }

}

@media (max-width:768px) {
    .main-footer {
        flex-direction:column;align-items:center;gap:20px;
    }

}


/*KEYFRAMES*/
@keyframes fadeIn {
    from{opacity:0;}
    to{opacity:1;}
}